TY - CHAP A1 - Frikel, Jürgen A1 - Quinto, E.T. ED - Burger, Martin ED - Todd Quinto, Eric ED - Louis, Alfred K. T1 - Artifacts in limited view tomography T2 - Oberwolfach Reports Y1 - 2014 U6 - https://doi.org/10.4171/OWR/2014/37 VL - 11 IS - 3 SP - 2047 EP - 2114 ER - TY - JOUR A1 - Brill, Markus A1 - Fluschnik, Till A1 - Froese, Vincent A1 - Jain, Brijnesh A1 - Niedermeier, Rolf A1 - Schultz, David T1 - Exact mean computation in dynamic time warping spaces JF - Data Mining and Knowledge Discovery N2 - Averaging time series under dynamic time warping is an important tool for improving nearest-neighbor classifiers and formulating centroid-based clustering. The most promising approach poses time series averaging as the problem of minimizing a Fréchet function. Minimizing the Fréchet function is NP-hard and so far solved by several heuristics and inexact strategies. Our contributions are as follows: we first discuss some inaccuracies in the literature on exact mean computation in dynamic time warping spaces. Then we propose an exponential-time dynamic program for computing a global minimum of the Fréchet function. The proposed algorithm is useful for benchmarking and evaluating known heuristics. In addition, we present an exact polynomial-time algorithm for the special case of binary time series. Based on the proposed exponential-time dynamic program, we empirically study properties like uniqueness and length of a mean, which are of interest for devising better heuristics. Experimental evaluations indicate substantial deficits of state-of-the-art heuristics in terms of their output quality. Y1 - 2019 U6 - https://doi.org/10.1007/s10618-018-0604-8 VL - 33 SP - 252 EP - 291 PB - Springer Nature ER - TY - JOUR A1 - Haug, Sonja A1 - Pointner, Sonja T1 - Sozialkapital und Migration JF - Kölner Zeitschrift für Soziologie und Sozialpsychologie N2 - Zunächst wird kurz der Begriff des in der Migrationssoziologie verwendeten Sozialkapitals erläutert und ein Überblick über die empirische Umsetzung in der Migrationsforschung gegeben. Das Sozialkapital gilt als einflussreiche unabhängige Variable für die Migrationsentscheidung. Anhand von Beispielen aus der Forschung über Migranten in Deutschland und ihre Familien- und Freundschaftsnetzwerke wird die Anwendung des Konzepts veranschaulicht. Insbesondere wird der Einfluss des Sozialkapitals auf die Integration dargelegt. Es zeigt sich, dass eine Präzisierung des begrifflichen Konzepts für die weitere Migrationsforschung sinnvoll ist. So ist eine Unterscheidung zwischen Sozialkapital am Herkunfts- und Zielort, d.h. zwischen herkunftsland-spezifischem und aufnahmelandspezifischem Sozialkapital notwendig, um die Wirkungsmechanismen des Sozialkapitals bei der Migration und der sozialen Integration präziser beschreiben und erklären zu können. Y1 - 2007 UR - https://kzfss.uni-koeln.de/sites/kzfss/pdf/SH_47-2007.pdf SN - 1861-891X IS - Sonderheft 47. Sozialkapital. Grundlagen und Anwendungen SP - 367 EP - 396 PB - VS Verlag für Sozialwissenschaften ; Springer CY - Wiesbaden ER - TY - CHAP A1 - Haug, Sonja T1 - Soziales Kapital, Migrationsnetzwerke und die Entstehung von Kettenmigrationsprozessen am Beispiel der italienischen Arbeitsmigration in Deutschland T2 - Workshop "Die Geschichte der Bundesrepublik als die Geschichte von Migrationen?" 1.-3.10.1998, Göttingen Y1 - 1998 ER - TY - RPRT A1 - Haug, Sonja T1 - Migration and Statistics N2 - The field of empirical migration and integration research is characterised by a wide range of research questions, theoretical approaches and data sets. Research based on official statistics has to deal with different data sets on migration and foreign population resulting in different numbers. Developments in official statistics concentrate on the improvement of data quality. The census 2010/2011 or the projected central population register are important issues, e.g. in respect of sampling and weighting of migrants in surveys. The concept of migration background in the microcensus is a mayor enhancement in population statistics and has become widely accepted. It is recommended to implement questions on migration background in the census 2010/2011 too. The most important accessible data sets in the field of empirical integration research are the microcensus and the German Socio-Economic Panel; there is still untapped potential for analysis in this area. The supplementation of large surveys with a migrant sample is an appreciated trend. Most important challenges for empirical migration and integration research are the development of sampling methods for migrant population (including onomastics and topomastics), studies on new and small migrant groups, research projects in the country of origin, longitudinal migrant surveys and the development of measurement instruments. KW - Population KW - Migration KW - Integration KW - Migration Background Y1 - 2009 UR - www.ratswd.de/download/RatSWD_WP_2009/RatSWD_WP_101.pdf ER - TY - JOUR A1 - Haug, Sonja T1 - Zum Verlauf des Zweitspracherwerbs im Migrationskontext BT - Eine Analyse der Ausländer, Aussiedler und Zuwanderer im Sozio-Ökonomischen Panel JF - Zeitschrift für Erziehungswissenschaft N2 - Die Entwicklung der mündlichen und schriftlichen Kenntnisse in Deutsch und der Sprache des Herkunftslandes bei Angehörigen der ersten und zweiten Einwanderergeneration aus den Gastarbeiter-Anwerbeländern, bei Aussiedlern und neuen Zuwanderergruppen wird beschrieben und Erklärungsfaktoren für Unterschiede werden mit Hilfe bivariater und multivariater Verfahren untersucht. Die Deutschkenntnisse der ersten Generation steigen zwischen 1984 und 2001 kaum an, wohingegen Aussiedler und Zuwanderer in kurzer Zeit relativ gute Fortschritte aufweisen. Die meisten Befragten sind bilingual. Defizite bei Deutschkenntnissen variieren nach Herkunftsland. Der Zweitspracherwerb erfolgt im Generationenverlauf, d.h. in Deutschland geborene Personen mit Migrationshintergrund haben in der Regel bessere Deutschkenntnisse als die erste Generation. Die Aufenthaltsdauer hat per se keinen Einfluss auf den Spracherwerb, ebenso wie das Geschlecht, während das Einwanderungsalter und die Schulbildung entscheidende Faktoren sind. Personen mit niedrigem Einwanderungsalter, Personen, die eine weiterführende Schule im Herkunftsland oder eine höhere Schule in Deutschland abgeschlossen haben, haben eine höhere relative Chance, gute mündliche und schriftliche Deutschkenntnisse zu erwerben. KW - Migranten KW - Integration KW - Sprachkenntnisse KW - Mehrsprachigkeit KW - Bildung Y1 - 2005 U6 - https://doi.org/10.1007/s11618-005-0137-y SN - 1862-5215 VL - 8 IS - 2 SP - 263 EP - 284 ER - TY - JOUR A1 - Haug, Sonja T1 - Binationale Ehen und interethnische Partnerschaften in Deutschland BT - Datenlage und Erklärungsfaktoren JF - Zeitschrift für Familienforschung N2 - Ein Blick in die amtlichen Statistiken laesst eine kontinuierliche Zunahme der absoluten Zahl binationaler Eheschliessungen in Deutschland erwarten. Dieser Trend wird haeufig als Indikator fuer die zunehmende soziale Integration von Migranten gewertet. Diese Wahrnehmung ist Anlass fuer eine weiterfuehrende Untersuchung ueber die Datenqualitaet und die theoretischen Begruendungen dieser Zunahme. Im vorliegenden Beitrag analysiert Sonja Haug, ob eine Zunahme interethnischer Partnerschaften tatsaechlich zu verzeichnen ist. Dazu kontrastiert sie amtliche Statistiken zu binationalen Ehen mit Analysen des Integrationssurveys des Bundesinstituts fuer Bevoelkerungsforschung (BiB) zu interethnischen Partnerschaften bei Deutsch-, Italienisch- und Tuerkischstaemmigen. Dabei zeigt sich, dass viele binationale Partnerschaften sich als interethnische Partnerschaften rekonstruieren lassen. Des weiteren diskutiert die Autorin verschiedene Erklaerungsfaktoren fuer interethnische Partnerwahl und Heiratsmigration, darunter Ressourcenausstattung, Gelegenheitsstrukturen, kulturelle Aspekte sowie binationale Eltern und familiales Kapital. KW - Empirische Untersuchung KW - Ehe KW - Eheschließung KW - Familiensoziologie KW - Partnerschaft KW - thnischer Unterschied KW - Interethnischer Konflikt KW - Statistik KW - Binationale Familie KW - Deutschland Y1 - 2004 SN - 1437-2940 VL - 16 IS - 3 SP - 305 EP - 329 PB - Budrich CY - Leverkusen ER - TY - BOOK A1 - Haug, Sonja A1 - Diehl, Claudia ED - Haug, Sonja ED - Diehl, Claudia T1 - Aspekte der Integration BT - Eingliederungsmuster und Lebenssituation italienisch- und türkischstämmiger junger Erwachsener in Deutschland Y1 - 2005 SN - 3-531-14772-2 PB - Verlag für Sozialwissenschaften CY - Wiesbaden ER - TY - CHAP A1 - Haug, Sonja ED - Slany, Krystina T1 - East-West migration from Central and Eastern Europe to Germany BT - Data Sets, Migration Models and Predication of Migration Potential T2 - International Migration. A Multidimensional Analysis Y1 - 2005 SP - 191 EP - 215 PB - AGH University of Science and Technology Press CY - Cracow ER - TY - JOUR A1 - Haug, Sonja A1 - Swiaczny, Frank ED - Brunotto, E. T1 - Rezension: Lexikon der Geographie. Spektrum Akademischer Verlag. 4 Bände JF - Zeitschrift für Bevölkerungswissenschaft Y1 - 2002 VL - 27 IS - 2 SP - 275 EP - 277 ER - TY - JOUR A1 - Haug, Sonja T1 - Familie, soziales Kapital und soziale Integration BT - Zur Erklärung ethnischer Unterschiede in Partnerwahl und generativem Verhalten bei jungen Erwachsenen deutscher, italienischer und türkischer Abstammung JF - Zeitschrift für Bevölkerungswissenschaft Y1 - 2002 VL - 27 IS - 4 SP - 393 EP - 425 ER - TY - CHAP A1 - Haug, Sonja T1 - Jüdische Zuwanderer in Deutschland BT - Sozialstruktur, Berufe, Verwandtschaftsnetzwerke T2 - Tagung des Arbeitskreises Migration und ethnische Minderheiten der DGD, 25.11.2005, Erlangen Y1 - 2005 ER - TY - JOUR A1 - Haug, Sonja T1 - Rezension: Edda Currle: Migration in Europa. Daten und Hintergründe JF - Zeitschrift für Bevölkerungswissenschaft Y1 - 2004 VL - 29 IS - 2 SP - 304 EP - 305 CY - Bamberg ER - TY - JOUR A1 - Haug, Sonja A1 - Sauer, Lenore T1 - Aussiedler, Spätaussiedler, Russlanddeutsche BT - Berufliche, sprachliche und soziale Integration JF - Osteuropa N2 - Aussiedler, Spätaussiedler bzw. Russlanddeutsche sind die größte Zuwanderergruppe in Deutschlandund somit eine der wichtigsten Zielgruppen kommunaler Integrationsförderung. Die Integration in den Arbeitsmarkt gestaltet sich schwierig. Ihren Alltag bewältigen die meisten Spätaussiedler dagegen sprachlich relativ problemlos. Die soziale Integration verläuft in hohem Maße über ein kirchliches Engagement oder sportliche Aktivitäten. Y1 - 2007 SN - 2509-3444 VL - 57 IS - 11 SP - 252 EP - 279 PB - Berliner Wiss.-Verl. CY - Berlin ER - TY - CHAP A1 - Drüeke, Ricarda A1 - Haug, Sonja A1 - Keller, Werner A1 - Weber, Karsten ED - Koschke, Rainer T1 - Verhalten und Einstellungen zum Mobiltelefonieren T2 - Informatik 2007 - Informatik trifft Logistik, Band 1 der Proceedings zur 37. Jahrestagung der Gesellschaft für Informatik e.V. (GI); 24.-27. September 2007 in Bremen Y1 - 2007 SN - 978-3-88579-203-1 SP - 354 EP - 358 PB - Gesellschaft für Informatik e. V. CY - Bonn ER - TY - CHAP A1 - Haug, Sonja T1 - Migration und Integration in Deutschland T2 - Tagung 'Migration und Integration' der Friedrich-Naumann-Stiftung, 06.11.2004,Mainz Y1 - 2004 ER - TY - JOUR A1 - Haug, Sonja T1 - Arbeitsmigration, Familiennachzug, Heiratsmigration JF - Zeitschrift für Bevölkerungswissenschaft Y1 - 2003 VL - 28 IS - 2-4 SP - 335 EP - 353 ER - TY - JOUR A1 - Haug, Sonja T1 - Interethnische Freundschaftsbeziehungen und Partnerschaften als Indikator der sozialen Integration JF - Diskurs Kindheits- und Jugendforschung N2 - Der Beitrag befasst sich mit interethnischen Beziehungen als Indikator der sozialen Integration. Theoretischer Ansatzpunkt für die Erklärung der Freundes- und Partnerwahl sind Gelegenheitsstrukturen, Ressourcenausstattung und ethnische Präferenzen. Datenbasis ist der Integrationssurvey des Bundesinstituts für Bevölkerungsforschung, eine Befragung von 18- 30-Jährigen mit deutscher, italienischer und türkischer Abstammung sowie das Sozio-ökonomische Panel. Mit Methoden der Netzwerkanalyse werden interethnische Freundschaften und die ethnische Homogenität der Freundesnetzwerke untersucht. Generell haben Italienischstämmige häufiger als Türkischstämmige deutsche Freunde. Deutsch-Italiener haben häufiger Freundschaftsbeziehungen zu Deutschen als Deutsch-Türken; sie weisen ein hohes aufnahmelandspezifisches soziales Kapital und ein hohes Ausmaß sozialer Integration auf. Die Untersuchung der Partnerschaften zeigt, dass anhand der zunehmenden deutsch-türkischen Eheschließungen die interethnische Partnerwahl überschätzt wird. Im Gegensatz zu Deutsch-Italienern erweist sich die Partnerwahl von Türken und Deutsch-Türken in der Regel als intraethnisch. Eine Erklärung für Unterschiede zwischen Deutsch-Italienern und Deutsch-Türken könnte der intergenerationale Ressourcentransfer sein. KW - Integration KW - soziale Netzwerke KW - Freundschaft KW - Partnerschaft KW - Migranten Y1 - 2006 UR - https://www.budrich-journals.de/index.php/diskurs/article/view/66/53 SN - 2193-9713 VL - 1 IS - 1 SP - 75 EP - 91 PB - Budrich CY - Leverkusen ER - TY - JOUR A1 - Haug, Sonja T1 - Migration Networks and Migration Decision Making JF - Journal of Ethnic and Migration Studies. Special Issue: Economics in Migration Research: Towards Disciplinary Integration? N2 - Drawing on the rational choice approach and the economic sociology of migration, this article discusses the role of social networks in terms of location-specific social capital. It discusses relations between sociological and economic aspects of migration and outlines the influence of social capital on migration decision-making and chain migration processes. There have been various attempts to measure these effects through empirical migration research, and this article focuses on two such studies. The first example concerns an investigation of migration intentions among Bulgarians in the 2001 Bulgarian census. The second is return migration in the household context of Italian migrants in Germany, based on data from the German Socio-Economic Panel. The main finding is that social capital at the place of destination has positive impacts on emigration intentions and return migration, whereas social capital at the place of residence has negative impacts on return migration. KW - Theories of Migration KW - Migrant Networks KW - Rational Choice Theory Y1 - 2008 U6 - https://doi.org/10.1080/13691830801961605 SN - 1369-183X VL - 34 IS - 4 SP - 585 EP - 605 ER - TY - JOUR A1 - Haug, Sonja T1 - Integration statt Abgrenzung JF - Quantara - Dialog mit der islamischen Welt N2 - Die Studie "Muslimisches Leben in Deutschland" des Bundesamtes für Migration und Flüchtlinge macht deutlich, dass die soziale Integration von Muslimen besser ist als vielfach angenommen. Defizite bestehen hingegen bei der Schulbildung und beim Bildungsaufstieg. Y1 - 2010 UR - de.qantara.de/Integration-statt-Abgrenzung/987c950i1p94/index.html ER - TY - RPRT A1 - Haug, Sonja A1 - Sauer, Lenore T1 - Zuwanderung und Integration von (Spät-)Aussiedlern BT - Ermittlung und Bewertung der Auswirkungen des Wohnortzuweisungsgesetzes ; Forschungsstudie im Auftrag des Bundesministeriums des Innern Y1 - 2007 UR - https://www.bamf.de/SharedDocs/Anlagen/DE/Forschung/Forschungsberichte/fb03-wohnortzuweisungsgesetz.html?nn=403976 SN - 3-9807743-7-6 CY - Nürnberg ER - TY - BOOK A1 - Haug, Sonja A1 - Stichs, Anja A1 - Müssig, Stephanie T1 - Muslim Life in Germany BT - a study conducted on behalf of the German Conference on Islam T2 - Muslimisches Leben in Deutschland Y1 - 2009 UR - https://www.bamf.de/SharedDocs/Anlagen/EN/Forschung/Forschungsberichte/fb06-muslimisches-leben.pdf?__blob=publicationFile&v=11 SN - 978-3-9812115-1-1 CY - Nürnberg ER - TY - RPRT A1 - Haug, Sonja A1 - Müssig, Stephanie A1 - Stichs, Anja T1 - Muslimisches Leben in Deutschland BT - Studie im Auftrag der Deutschen Islam Konferenz Y1 - 2009 UR - https://www.bamf.de/SharedDocs/Anlagen/DE/Forschung/Forschungsberichte/fb06-muslimisches-leben.pdf?__blob=publicationFile&v=11 SN - 978-3-9812115-1-1 CY - Nürnberg ER - TY - BOOK A1 - Haug, Sonja T1 - Menschen mit Migrationshintergrund BT - Theorie und Empirie der Migration Y1 - 2009 PB - Hamburger Fern-Hochschule (HFH) CY - Hamburg ER - TY - BOOK A1 - Haug, Sonja T1 - Soziales Kapital und Kettenmigration BT - Italienische Migranten in Deutschland Y1 - 2000 PB - Leske + Budrich CY - Opladen ER - TY - JOUR A1 - Haug, Sonja A1 - Rühl, Stefan A1 - Babka von Gostomski, Christian T1 - Migranten als Täter und Opfer von Gewalt und Kriminalität JF - Bewährungshilfe. Zeitschrift für Soziales, Strafrecht, Kriminalpolitik Y1 - 2008 SN - 0405-6779 SP - 211 EP - 227 PB - Forum-Verl. Godesberg CY - Mönchengladbach ER - TY - JOUR A1 - Diehl, Claudia A1 - Haug, Sonja T1 - Assessing migration and integration in an immigration hesitant country BT - the sources and problems of data in Germany JF - Studi Emigrazione/International Journal of Migration Studies Y1 - 2003 SN - 0039-2936 N1 - Sprache der Zeitschrift: englisch, italienisch VL - 40 IS - 152 SP - 747 EP - 771 PB - Associato all'USPI - Unione Stampa Periodica Italiana CY - Roma ER - TY - JOUR A1 - Haug, Sonja A1 - Sauer, Lenore ED - Mai, Ralf ED - Swiaczny, Frank T1 - Zuwanderung von Spätaussiedlern in Deutschland JF - Zeitschrift für Bevölkerungswissenschaft. Sonderheft Regionale Bevölkerungsentwicklung in Deutschland Y1 - 2007 SN - 0340-2398 IS - 3-4 SP - 413 EP - 442 PB - VS, Verl. für Sozialwiss. CY - Wiesbaden ER - TY - JOUR A1 - Haug, Sonja T1 - Education and vocational training of Italian Migrants in Germany BT - the role of family social capital in the creation of human capital JF - Studi Emigrazione/International Journal of Migration Studies Y1 - 2005 SN - 0039-2936 VL - 42 IS - 158 SP - 259 EP - 283 PB - Associato all'USPI - Unione Stampa Periodica Italiana CY - Roma ER - TY - JOUR A1 - Haug, Sonja A1 - Heins, Frank T1 - Italian Migrants in Germany BT - A statistical overview and a research bibliographical note JF - Studi Emigrazione/International Journal of Migration Studies Y1 - 2005 SN - 0039-2936 VL - 42 IS - 158 SP - 227 EP - 244 PB - Associato all'USPI - Unione Stampa Periodica Italiana CY - Roma ER - TY - JOUR A1 - Haug, Sonja T1 - Soziale Integration durch soziale Einbettung in Familie, Verwandtschafts- und Freundesnetzwerke JF - Zeitschrift für Bevölkerungswissenschaft Y1 - 2004 SN - 1866-8852 VL - 29 IS - 2 SP - 163 EP - 192 PB - VS Verlag für Sozialwissenschaften CY - Wiesbaden ER - TY - JOUR A1 - Haug, Sonja T1 - Der Zweitspracherwerb im Migrationskontext BT - Eine Analyse der Daten des Sozio-ökonomischen Panels und des Integrationssurveys des BiB JF - Deutsch als Zweitsprache Y1 - 2007 SN - 1619-8433 IS - 4 SP - 19 EP - 27 PB - Bundesamt für Migration und Flüchtlinge CY - Nürnberg ER - TY - JOUR A1 - Haug, Sonja A1 - Rühl, Stefan T1 - Remigration von Zuwanderern in Deutschland JF - Geographische Rundschau KW - Rückwanderer KW - Zuwanderer KW - Deutschland Y1 - 2008 SN - 0016-7460 VL - 4 IS - 6 SP - 26 EP - 33 PB - Westermann CY - Braunschweig ER - TY - JOUR A1 - Haug, Sonja T1 - Frauen in Integrationskursen BT - Ergebnisse einer Teilnehmerbefragung des Bundesamtes für Migration und Flüchtlinge JF - Deutsch als Zweitsprache Y1 - 2006 SN - 1619-8433 IS - 1 SP - 8 EP - 12 PB - Bundesamt für Migration und Flüchtlinge CY - Nürnberg ER - TY - CHAP A1 - Haug, Sonja A1 - Sauer, Lenore T1 - Bestimmungsfaktoren internationaler Migration T2 - Migration und ethnische Minderheiten N2 - Der Bericht beinhaltet eine Zusammenfassung von Migrationstheorien aus Ökonomie und Sozialwissenschaften. Diese dienen der Erklärung von Wanderungsentscheidungen und Wanderungsbewegungen und stellen die Grundlage für die Vorhersage zukünftiger Wanderungsentwicklungen dar. Um vorhandene Studien über Migrationspotenziale zu beurteilen, ist es daher notwendig, Kenntnisse über theoretische Grundlagen zu haben. Insofern stellt diese Einführung in die Migrationstheorie ein Werkzeug für den kritischen Umgang mit gängigen Prognosemodellen, Befragungsinstrumentenn und Schätzungen dar. Es werden mikro- und makrotheoretische Ansätze sowie Meso-Ebenenansätze beschrieben. Y1 - 2006 UR - https://www.gesis.org/fileadmin/upload/dienstleistung/fachinformationen/servicepublikationen/sofid/Gesamtdateien/Migration_und_ethnische_Minderheiten/Migration_2006_01.pdf SN - 0938-6033 IS - 1 SP - 7 EP - 34 PB - Informationszentrum Sozialwissenschaften CY - Bonn ER - TY - CHAP A1 - Haug, Sonja ED - Diekmann, Andreas ED - Eichner, Klaus ED - Schmidt, Peter ED - Voss, Thomas T1 - Raubkopierer als moderne Freibeuter BT - Interessen und Normen bei Urheberrechtskonflikten am Beispiel von Musiktauschbörsen im Internet T2 - Rational Choice: Theoretische Analysen und empirische Resultate. Festschrift für Karl-Dieter Opp zum 70. Geburtstag Y1 - 2008 U6 - https://doi.org/10.1007/978-3-531-90866-3_8 SP - 119 EP - 141 PB - Verlag für Sozialwissenschaften CY - Wiesbaden ER - TY - CHAP A1 - Haug, Sonja ED - Diewald, Martin ED - Lüdicke, Jörg T1 - Soziales Kapital als Ressource im Kontext von Migration und Integration T2 - Soziale Netzwerke und soziale Ungleichheit. Zur Rolle von Sozialkapital in modernen Gesellschaften Y1 - 2007 U6 - https://doi.org/10.1007/978-3-531-90458-0_4 SP - 85 EP - 111 PB - Verlag für Sozialwissenschaften CY - Wiesbaden ER - TY - VIDEO A1 - Haug, Sonja ED - Rehberg, Karl-Siegbert T1 - Internationale Wanderungsbewegungen und individuelle Verläufe von Migration BT - Eine Veranstaltung der Sektion Migration und ethnische Minderheiten T2 - Die Natur der Gesellschaft : Verhandlungen des 33. Kongresses der Deutschen Gesellschaft für Soziologie in Kassel Y1 - 2008 PB - Campus CY - Wiesbaden ER - TY - JOUR A1 - Haug, Sonja A1 - Swiaczny, Frank T1 - Migrations- und Integrationsforschung in der Praxis BT - Das Beispiel BiB-Integrationssurvey JF - Standort. Zeitschrift für Angewandte Geographie Y1 - 2003 VL - 27 IS - 1 SP - 16 EP - 20 ER - TY - JOUR A1 - Haug, Sonja T1 - Italian Migrants in Germany BT - Integration in the Education System and the Dual System of Vocational Training JF - Zeitschrift für Bevölkerungswissenschaft Y1 - 2004 SN - 1866-8852 VL - 29 IS - 3-4 SP - 527 EP - 582 PB - VS Verlag für Sozialwissenschaften ; Springer CY - Wiesbaden ER - TY - JOUR A1 - Haug, Sonja T1 - Wanderungen zwischen Deutschland und den mittel- und osteuropäischen EU-Beitrittsländern JF - Wirtschaft und Statistik Y1 - 2004 IS - 3 SP - 280 EP - 287 ER - TY - JOUR A1 - Haug, Sonja T1 - Interethnische Freundschaftsbeziehungen und soziale Integration BT - Unterschiede in der Ausstattung mit sozialem Kapital bei jungen Deutschen und Immigranten JF - Kölner Zeitschrift für Soziologie und Sozialpsychologie Y1 - 2003 VL - 55 IS - 4 SP - 716 EP - 736 ER - TY - JOUR A1 - Haug, Sonja T1 - Kettenmigration am Beispiel italienischer Arbeitsmigranten in Deutschland 1955-2000 JF - Archiv für Sozialgeschichte Y1 - 2002 VL - 42 SP - 123 EP - 143 ER - TY - CHAP A1 - Haug, Sonja ED - Haug, Sonja ED - Swiaczny, Frank T1 - Migration aus Mittel- und Osteuropa nach Deutschland BT - Trends und Emigrationspotential unter besonderer Berücksichtigung von Bulgarien T2 - Migration in Europa N2 - Im Zuge der EU-Ost-Erweiterung sind im Mai 2004 zehn Länder der EU beigetreten. Bulgarien und Rumänien sollen im Jahr 2007 folgen. Dieser Beitrag befasst sich mit der aktuellen und zukünftigen Entwicklung der Migration aus den mittel- und osteuropäischen EU-Beitrittsländern (MOEL) mit einem Schwerpunkt auf Bulgarien. Hierbei werden Ergebnisse des EU-Twinning-Light-Projektes „External Migration in Bulgaria – Analysing the development and consequences of the migration process” vorgestellt. Es wird ein Überblick über die Datenlage zur Migration zwischen den MOEL und Deutschland einerseits und zwischen Bulgarien und der EU bzw. Deutschland andererseits gegeben, wobei methodische Aspekte und die Datenqualität bewertet werden. Vorhersagen zukünftiger Migration werden anhand ökonomischer Schätzungen und Befragungen zum Migrationspotenzial dargelegt und kritisch beurteilt. Ausführlich wird auf Ergebnisse des bulgarischen Zensus 2001 zum Emigrationspotential in der Bevölkerung eingegangen. Das Migrationspotenzial der MOEL, die Konsequenzen für die Herkunftsländer unter dem Gesichtspunkt eines möglichen „Brain Drains“ und die Steuerungsmöglichkeiten werden diskutiert. Y1 - 2005 UR - https://nbn-resolving.org/urn:nbn:de:0168-ssoar-331157 SP - 133 EP - 151 ER - TY - CHAP A1 - Haug, Sonja ED - Carchedi, Francesco ED - Pugliese, Enrico T1 - Storia d’Immigrazione e Tendenze All’ Integrazione di Emigrati Italiani in Germania T2 - Andare, Restare, Tornare. Cinquant' Anni di Emigrazione Italiana in Germania Y1 - 2006 SP - 45 EP - 56 PB - Cosmo Iannone Editore CY - Isernia ER - TY - CHAP A1 - Haug, Sonja ED - Iontsev, Vladimir ED - Ivakhniouk, Irina T1 - Migration Trends from Central and Eastern Europe to Germany T2 - International Migration Trends Y1 - 2005 SP - 75 EP - 88 PB - MAX Press CY - Moscow ER - TY - CHAP A1 - Haug, Sonja A1 - Wolf, Michael ED - Haug, Sonja ED - Swiaczny, Frank T1 - Jüdische Zuwanderung nach Deutschland T2 - Neue Zuwanderergruppen in Deutschland Y1 - 2006 SP - 65 EP - 82 PB - Bundesinstitut für Bevölkerungsforschung CY - Wiesbaden ER - TY - CHAP A1 - Haug, Sonja A1 - Gerlitz, Jean-Yves ED - Meyerhoff, Jürgen ED - Schwarze, Reimund T1 - Messkonzepte sozialen Kapitals BT - Eine Betrachtung vor dem Hintergrund der Nachhaltigkeitsdebatte T2 - Jahrbuch Ökologische Ökonomik - Soziale Nachhaltigkeit Y1 - 2007 SP - 189 EP - 218 PB - Metropolis Verlag CY - Marburg ER - TY - JOUR A1 - Haug, Sonja T1 - Bleiben oder Zurückkehren? BT - Zur Messung, Erklärung und Prognose der Rückkehr von Immigranten in Deutschland JF - Zeitschrift für Bevölkerungswissenschaft Y1 - 2001 VL - 26 IS - 2 SP - 231 EP - 270 ER - TY - RPRT A1 - Haug, Sonja T1 - Soziodemographische Merkmale, Berufsstruktur und Verwandtschaftsnetzwerke jüdischer Zuwanderer N2 - Hinsichtlich der Berufsstruktur unterscheiden sich jüdische Zuwanderer sowohl von klassischen Arbeitsmigranten, die vor allem im Arbeitsmarktsegment mit niedrigen Qualifikationsanforderungen beschäftigt sind, als auch von Spätaussiedlern und der deutschen Allgemeinbevölkerung. Denn sie weisen ein überdurchschnittlich hohes Niveau der Bildungs- und Berufsqualifikation auf. Ein sehr hoher Anteil im erwerbsfähigen Alter hat einen wissenschaftlichen Beruf erlernt und im Herkunftsland ausgeübt. Angesichts des relativ hohen Qualifikationsniveaus der jüdischen Zuwanderer scheint es besonders wichtig zu sein, dass die Berufsabschlüsse und die Berufserfahrungen anerkannt werden, wozu häufig eine Weiterqualifizierung notwendig sein wird. Unter der Bedingung des Erwerbs deutscher Sprachkenntnisse bieten die Ressourcen dieser Zuwanderergruppe bei geeigneter Förderung grundsätzlich gute Voraussetzungen für eine Integration in den Arbeitsmarkt. Die hier vorliegende Beschreibung der demographischen Merkmale, der Nationalitäts- und Religionszugehörigkeit, der Berufsstruktur und der Verwandtschaftsnetzwerke beruht auf den Daten der 1.061 jüdischen Zuwanderer, die im Jahr 2005 in der Landesaufnahmestelle des Freistaates Bayern eingetroffen sind. Y1 - 2007 UR - https://www.bamf.de/SharedDocs/Anlagen/DE/Forschung/WorkingPapers/wp08-merkmale-juedische-zuwanderer.html?nn=283560 CY - Nürnberg ER - TY - RPRT A1 - Haug, Sonja T1 - Soziales Kapital, Migrationsentscheidungen und Kettenmigrationsprozesse BT - Das Beispiel der italienischen Migranten in Deutschland N2 - In dem vorliegenden Beitrag geht es um die theoretische Modellierung und empirische Untersuchung von Kettenmigrationsprozessen. Im Mittelpunkt steht die These, dass bei der Entscheidung zur Migration neben ökonomischen Überlegungen soziale Beziehungen der Migranten von zentraler Bedeutung sind. Auf der Basis der Theorie rationaler Entscheidungen wird ein allgemeines Erklärungsmodell für die Entstehung von Kettenmigrationsprozessen vorgestellt. Soziales Kapital fungiert dabei als eine Art ‚missing link‘ zwischen individuellen Migrationsentscheidungen und resultierenden Migrationsprozessen. Anhand der empirischen Auswertung verschiedener Datenquellen konnte die Rolle von Verwandtschaftsnetzwerken bei der Immigrations- und Rückkehrentscheidung am Beispiel der italienischen Migranten in Deutschland bestätigt werden. Die Ergebnisse der empirischen Analyse werden dargelegt, darunter aufbereitete Daten der amtlichen Statistik zum Verlauf der Immigration aus Italien seit 1950 sowie eine Auswertung von Interviews mit italienischen Befragten im Rahmen des Sozioökonomischen Panels und aus einer Gemeindestudie. Insbesondere erwies sich die Rückkehr von Haushaltsmitgliedern nach Italien als die wichtigste Determinante für Remigrationsentscheidungen. Damit wird deutlich, daß bei der Untersuchung von Migrationsprozessen die soziale Einbettung der Migranten nicht ausgeblendet werden darf. Y1 - 2000 UR - https://ul.qucosa.de/api/qucosa%3A14883/attachment/ATT-0/ CY - Leipzig ER - TY - RPRT A1 - Haug, Sonja T1 - Die Datenlage im Bereich der Migrations- und Integrationsforschung BT - Ein Überblick über Migrations- und Integrationsindikatoren und die Datenquellen N2 - Das Working Paper 1/2005 enthält eine zusammenfassende Beschreibung und Beurteilung der Datenlage im Bereich der Migrations- und Integrationsforschung. Die wichtigsten amtlichen Register und die darauf basierenden Statistiken werden vorgestellt. Auch auf bundesweiter Ebene durchgeführte Befragungen, die sich unter anderem oder ausschließlich auf Ausländer oder Migranten beziehen, werden aufgeführt. Die Pluspunkte und Beschränkungen der Datenquellen werden beschrieben sowie zukünftige Auswertungsmöglichkeiten und Perspektiven der Forschung skizziert. Y1 - 2005 UR - https://www.bamf.de/SharedDocs/Anlagen/DE/Forschung/WorkingPapers/wp01-datenlage.html?nn=403984 CY - Nürnberg ER - TY - RPRT A1 - Haug, Sonja A1 - Schimany, Peter T1 - Jüdische Zuwanderer in Deutschland BT - Der Stand der Forschung Y1 - 2005 UR - https://www.bamf.de/SharedDocs/Anlagen/DE/Forschung/WorkingPapers/wp03-juedische-zuwanderer.html?nn=403984 CY - Nürnberg ER - TY - CHAP A1 - Haug, Sonja ED - Swiaczny, Frank ED - Haug, Sonja T1 - Die soziale Integration junger italienischer und türkischer Migranten in Deutschland T2 - Migration - Integration - Minderheiten. Neuere interdisziplinäre Forschungsergebnisse Y1 - 2003 VL - Nr. 107 SP - 97 EP - 127 PB - Bundesinstitut für Bevölkerungsforschung CY - Wiesbaden ER - TY - CHAP A1 - Haug, Sonja ED - Druwe (Hrsg.), Ulrich ED - Kunz (Hrsg.), Volker T1 - Anomalien in der Entscheidungstheorie BT - Empirische Evidenz und Konsequenzen T2 - Anomalien in der Handlungs- und Entscheidungstheorie Y1 - 1998 SP - 126 EP - 160 PB - Leske + Budrich CY - Opladen ER - TY - JOUR A1 - Haug, Sonja T1 - Muslim, integriert und selbstständig JF - Handelsblatt Y1 - 2009 UR - https://www.handelsblatt.com/meinung/kommentare/essay-muslim-integriert-und-selbststaendig/3284800.html VL - 202 IS - 7 ER - TY - RPRT A1 - Haug, Sonja ED - Centro Studi Emigrazione Roma (CSER) (Hrsg.), T1 - Education and vocational training of Italians in Germany T2 - The Italian migrant community in Germany Y1 - 2003 N1 - ITENETS Project PB - International Training Centre of the International Labour Organisation (ILO) CY - Rom, Turin ER - TY - JOUR A1 - Haug, Sonja A1 - Heins, Frank T1 - Italian immigration and integration in Germany BT - A success story? Yeas and No JF - Demotrends Y1 - 2005 IS - 1 CY - Rom ER - TY - RPRT A1 - Haug, Sonja A1 - Diehl, Claudia T1 - External Migration in Bulgaria BT - External migration and emigration potential in Bulgaria and its consequences for demography and economy Y1 - 2004 N1 - Attachment to the Final Report of the Twinning Light Project between the Federal Statistical Office of Germany and the National Statistical Institute of Bulgaria (External Migration – Analysing the development and consequences of the migration process) CY - Wiesbaden ER - TY - GEN A1 - Haug, Sonja T1 - Antrittsvorlesung zur Umhabilitation bei der Eröffnungsfeier des Masterstudiengangs Interkulturalität und Integration zum Thema Muslimisches Leben in Deutschland, 26.10.2009 Y1 - 2009 ER - TY - JOUR A1 - Haug, Sonja T1 - Rezension: Christoph Pallaske: Migrationen aus Polen in die Bundesrepublik Deutschland in den 1980er und 1990er Jahren BT - Migrationsverläufe und Eingliederungsprozesse in sozialgeschichtlicher Perspektive JF - Zeitschrift für Bevölkerungswissenschaft Y1 - 2002 VL - 29 IS - 1 SP - 156 EP - 157 PB - Waxmann CY - Münster ER - TY - JOUR A1 - Swiaczny, Frank A1 - Haug, Sonja T1 - Rezension: Bundesamt für Bauwesen und Raumordnung: INKAR Pro. Raumordnungsprognose 1999-2020 JF - Zeitschrift für Bevölkerungswissenschaft Y1 - 2003 VL - 28 IS - 1 SP - 136 EP - 137 CY - Bonn ER - TY - JOUR A1 - Haug, Sonja T1 - Die Migration aus Polen gewinnt an Bedeutung BT - Zahlen zur ausländischen Wohnbevölkerung und der Migration aus Mittel- und Osteuropa in Deutschland JF - BiB-Mitteilungen Y1 - 2002 VL - 23 IS - 4 SP - 10 EP - 18 ER - TY - JOUR A1 - Haug, Sonja A1 - Seebass, Katharina T1 - Zugänge zur Gesellschaft eröffnen BT - Lotsenprojekt der Türkischen Gemeinde Deutschland JF - Blickpunkt Integration Y1 - 2009 VL - 2009 IS - 3 PB - Bundesamt für Migration und Flüchtlinge ER - TY - JOUR A1 - Haug, Sonja T1 - Auswirkungen des Wohnortzuweisungsgesetzes BT - Die Ergebnisse des Forschungsprojektes liegen vor JF - Blickpunkt Integration Y1 - 2008 VL - 2008 IS - 1 SP - 8 EP - 9 ER - TY - JOUR A1 - Haug, Sonja T1 - Integrationsforschung BT - Mehrsprachigkeit bei Migranten JF - Blickpunkt Integration Y1 - 2008 IS - 3 SP - 7 EP - 8 PB - Bundesamt für Migration und Flüchtlinge ER - TY - CHAP A1 - Haug, Sonja T1 - Empirische Migrations- und Integrationsforschung BT - Stand und Perspektiven T2 - Tagung "Integration im Spiegel sozio-demographischer Forschungsergebnisse", Jahrestagung der Deutschen Gesellschaft für Demographie, 11.-12.03.2009, Nürnberg Y1 - 2009 ER - TY - CHAP A1 - Haug, Sonja T1 - Ausmaß und Potenzial des ehrenamtlichen Engagements von Migranten T2 - Workshop "Ehrenamt im Bevölkerungsschutz und der demographische Wandel", Bundesamt für Bevölkerung und Katastrophenschutz, 24.11.2008, Bonn Y1 - 2008 ER - TY - CHAP A1 - Haug, Sonja T1 - Migrations- und Integrationsforschung T2 - Herbsttagung des Arbeitskreises Migration, Integration, Minderheiten der Deutschen Gesellschaft für Demographie zum Thema Migrations- und Integrationsforschung im Spannungsfeld der Politikberatung, 03.12.2008, Auswandererhaus Bremerhaven Y1 - 2008 ER - TY - GEN A1 - Haug, Sonja T1 - Sozialkapital, Migration und Integration T2 - Interdisziplinäre Vortragsreihe "Soziale Netzwerkanalyse. Netzwerke in Wirtschaft und Migration", Exzellenzcluster der Universitäten Trier und Mainz, 11.02.2009 Y1 - 2009 ER - TY - CHAP A1 - Haug, Sonja A1 - Vardar, Nilden T1 - Muslimisches Leben in Deutschland T2 - Tag der offenen Tür, Bundesamt für Migration und Flüchtlinge, 16.10.2009, Nürnberg Y1 - 2009 ER - TY - JOUR A1 - Haug, Sonja T1 - Rezension: Olaf Schnur: Lokales Sozialkapital für die "soziale Stadt" JF - Geographische Revue Y1 - 2003 VL - 6 IS - 1 SP - 61 EP - 66 PB - Leske + Budrich CY - Opladen ER - TY - RPRT A1 - Haug, Sonja T1 - Muslimisches Leben in Deutschland, 22.10.2009 Y1 - 2009 ER - TY - CHAP A1 - Haug, Sonja T1 - Migration BT - das Einwanderungsland Deutschland T2 - Bevölkerung. Fakten - Trends - Ursachen - Erwartungen Y1 - 2004 SP - 47 EP - 54 CY - Wiesbaden ER - TY - JOUR A1 - Haug, Sonja T1 - Trends der Auswanderung aus Deutschland JF - BiB-Mitteilungen Y1 - 2004 VL - 25 IS - 1 SP - 11 EP - 14 ER - TY - CHAP A1 - Haug, Sonja T1 - Wohnortzuweisung von Spätaussiedlern und die Förderung der sprachlichen Integration von Migranten T2 - Tagung Föderalismus in Deutschland und gesellschaftliche Vielfalt, Zentralinstitut für Regionalforschung der Universität Erlangen, 27.02.2008, Bad Staffelstein Y1 - 2008 ER - TY - CHAP A1 - Haug, Sonja A1 - Rother, Nina T1 - Integrationskurse für Spätaussiedler in Friedland (Integrationskursbefragung) T2 - Herbsttagung des Spätaussiedlerbeirates, Bundesministerium des Innern, 18.11.2008, Berlin Y1 - 2008 ER - TY - CHAP A1 - Haug, Sonja T1 - Leitung der Veranstaltung der Sektion Migration und ethnische Minderheiten T2 - "50 Jahre Arbeitsmigration in Deutschland - Bestandsaufnahme, Erklärungsfaktoren, Perspektiven", Kongress für Soziologie, 6.-10.10.2008, Jena Y1 - 2008 ER - TY - CHAP A1 - Haug, Sonja T1 - Zuwanderung und Integration von Spätaussiedlern T2 - Herbsttagung des Arbeitskreises Migration, Integration, Minderheiten der Deutschen Gesellschaft für Demographie zum Thema Zuwanderung und Integration von Spätaussiedlern, Bundesamt für Migration und Flüchtlinge, 29.-30.11.2007, Nürnberg Y1 - 2007 ER - TY - CHAP A1 - Haug, Sonja A1 - Müssig, Stephanie T1 - Muslimisches Leben in Deutschland T2 - Vortrag im Gemeinsamen Terror-Abwehrzentrum (GTAZ),15.09.2009, Berlin Y1 - 2009 ER - TY - CHAP A1 - Haug, Sonja T1 - Social Capital Theory T2 - International Summer School "Migrants' Networking", October 5th to 8th 2009, Ruhr- Universität Bochum und Universität Duisburg-Essen Y1 - 2009 ER - TY - CHAP A1 - Haug, Sonja T1 - Ausgewählte Aspekte von Zuwanderung und ausländische Bevölkerung T2 - Institut für angewandte Demographie (IFAD), 22.06.2009, Berlin Y1 - 2009 ER - TY - CHAP A1 - Haug, Sonja T1 - Kursteilnehmerbefragung in Deutschland T2 - Konferenz Sprache und Integration, Goethe Institut, 18.09.2009, Berlin Y1 - 2009 ER - TY - CHAP A1 - Haug, Sonja T1 - Muslimisches Leben in Deutschland T2 - Deutsche Islam Konferenz, Plenumssitzung, 25.06.2009, Berlin Y1 - 2009 ER - TY - CHAP A1 - Haug, Sonja A1 - Sauer, Lenore T1 - Die Auswirkungen des Wohnortzuweisungsgesetzes auf die Arbeitsmarktintegration von (Spät-)Aussiedlern T2 - IAB Workshop Integrationschancen von Spätaussiedlern, 29. - 30.03.2007, Nürnberg Y1 - 2007 PB - Institut für Arbeitsmarkt und Berufsforschung (IAB) ER - TY - CHAP A1 - Haug, Sonja T1 - Soziales Kapital als Ressource im Kontext von Migration und Integration T2 - Konferenz Soziale Netzwerke und Sozialkapital Y1 - 2005 ER - TY - CHAP A1 - Haug, Sonja T1 - Befragung von Spätaussiedlern BT - Ein Erfahrungsbericht T2 - Kongress der Deutschen Gesellschaft für Soziologie, Ad-hoc-Gruppe "Methodische Besonderheiten und Probleme empirischer Studien mit MigrantInnen", 12.10.2006, Kassel Y1 - 2006 ER - TY - GEN A1 - Haug, Sonja A1 - Rother, Nina T1 - Integrationsverlauf von Integrationskursteilnehmern BT - Erste Ergebnisse des Integrationskurspanels T2 - Tagung der Bewertungskommission, 22.-23.09.2008, Lambrecht/Pfalz Y1 - 2008 ER - TY - CHAP A1 - Haug, Sonja T1 - Menschenrechtsrelevante Aspekte der Integration von Migrantinnen BT - Daten und Fakten T2 - Tagung Frauen in der Migration und die Menschenrechte. Hessisches Sozialministerium, 28.09.2006, Wiesbaden Y1 - 2006 ER - TY - CHAP A1 - Haug, Sonja T1 - Kriminalität von Aussiedlern T2 - Vortrag bei der Sitzung des Spätaussiedlerbeirats, Bundesministerium des Innern, 25.02.2008, Berlin Y1 - 2008 ER - TY - CHAP A1 - Haug, Sonja T1 - Migration and Statistics T2 - Tagung des Rats für Sozial- und Wirtschaftsdaten, WZB, 11.10.2008, Berlin Y1 - 2008 ER - TY - GEN A1 - Haug, Sonja T1 - Zuwanderung und Integration von Spätaussiedlern Y1 - 2008 N1 - Antrittsvorlesung als Privatdozentin der Universität Mainz, 11.02.2008 ER - TY - CHAP A1 - Haug, Sonja T1 - Ressourcen, Reziprozität, Vertrauen, soziale Netzwerke BT - Zur Definition und Messung des sozialen Kapitals T2 - Tagung "Sozialkapital. Grundlagen, Modelle und Anwendungen" Sektion "Modellbildung und Simulation" der Deutschen Gesellschaft für Soziologie, 8.-10.7.2004, ETH Zürich Y1 - 2004 ER - TY - CHAP A1 - Haug, Sonja T1 - Zuwanderungsgeschichte und Integrationstendenzen italienischer Migranten in Deutschland T2 - Tagung Vom Auswanderungsland zum Einwanderungsland. 50 Jahre Migration in Italien und Deutschland, 17. - 18.02.2005, Goethe-Institut Rom Y1 - 2005 ER - TY - CHAP A1 - Haug, Sonja T1 - Emigration aus Mittel- und Osteuropa BT - das Beispiel Bulgarien T2 - Tagung 'Migration in Europa' des Arbeitskreises 'Migration, Integration, Minderheiten' der DGD mit dem europäischen forum für migrationsstudien (efms), 5.11.2004, Wiesbaden Y1 - 2004 ER - TY - CHAP A1 - Haug, Sonja T1 - Education of Italian migrants and other nationalities in Germany T2 - Conference 'International Migration in Europe: New Trends, new methods', 25-27.11.2004, Rom Y1 - 2005 ER - TY - CHAP A1 - Haug, Sonja T1 - Migration and Potential Migration in Bulgaria and Romania T2 - Tagung der Migration Research Group, Hamburgisches Weltwirtschaftsinstitut, 18.-19.11.2005 Y1 - 2005 ER - TY - CHAP A1 - Haug, Sonja T1 - Soziales Kapital, Migration und Integration T2 - Tagung der Sektion Migration und ethnische Minderheiten der DGS, 18.-19.05.2006, München Y1 - 2006 ER - TY - CHAP A1 - Haug, Sonja T1 - Zuwanderung und Integration von Spätaussiedlern T2 - Kolloquium der Pädagogischen Hochschule Schwäbisch Gmünd, 13.11.2007 Y1 - 2007 ER - TY - CHAP A1 - Haug, Sonja T1 - Jüdische Zuwanderer in Deutschland T2 - Fachtagung, Bundesamt für Migration und Flüchtlinge, 31.10.2005, Nürnberg Y1 - 2005 ER - TY - CHAP A1 - Haug, Sonja T1 - Demographischer Wandel, Generationenbeziehungen und Generationengerechtigkeit Y1 - 2007 N1 - Vortrag im Rahmen des Habilitationsverfahrens, Universität Mainz, 16.05.2007 ER - TY - CHAP A1 - Haug, Sonja T1 - Wissenschaftstheoretische Problembereiche empirischer Wirtschafts- und Sozialforschung BT - Induktive Forschungslogik, naiver Realismus, Instrumentalismus, Relativismus T2 - Wissenschaftstheorie in Ökonomie und Wirtschaftsinformatik : Theoriebildung und -bewertung, Ontologien, Wissensmanagement Y1 - 2004 SN - 978-3-8244-0738-5 U6 - https://doi.org/10.1007/978-3-322-81127-1_4 SP - 85 EP - 107 PB - Dt. Univ.-Verl. CY - Wiesbaden ER - TY - CHAP A1 - Haug, Sonja T1 - Soziale Beziehungen in Familie, Verwandtschaft, Freundeskreis und Cliquen BT - Die soziale Integration junger italienischer und türkischer Migranten T2 - Tagung der Deutschen Gesellschaft für Demographie zum Thema 'Transnationale und interregionale Migrationsprozesse - Konsequenzen für Politik, Wirtschaft und Gesellschaft', 6.-7.3.2003, Wiesbaden Y1 - 2003 ER - TY - CHAP A1 - Haug, Sonja T1 - Migration aus Mittel- und Osteuropa nach Deutschland BT - Datenqualität und methodische Probleme von Wanderungsprognosen T2 - Herbsttagung des Arbeitskreises 'Bevölkerungswissenschaftliche Methoden' der Deutschen Gesellschaft für Demographie zum Thema 'Nationale und internationale Wanderungen', 16.-17.10.2003, Hannover Y1 - 2003 ER - TY - CHAP A1 - Haug, Sonja A1 - Kropp, Per T1 - Soziale Netzwerke beim Berufseinstieg T2 - Kongress der Deutschen Gesellschaft für Soziologie, Ad-Hoc-Gruppe "Der Arbeitsmarkt für SozialwissenschaftlerInnen: Absolventenbefragungen und Verbleibstudien", 31., 7.-11.10.2002, Leipzig Y1 - 2002 ER - TY - GEN A1 - Haug, Sonja T1 - Migration Trends from Central and Eastern Europe to Germany T2 - Conference of the International Union for the Scientific Study in Population (IUSSP), 18.-23.7.2005, Tours Y1 - 2005 ER - TY - CHAP A1 - Haug, Sonja T1 - Migration und die EU-Osterweiterung T2 - Fachkolloqium Migration, 22.6.2005, Universität Bremen Y1 - 2005 ER - TY - CHAP A1 - Haug, Sonja T1 - Jüdische Zuwanderer in Deutschland T2 - Workshop des Referats Migrations- und Integrationsforschung, 21.4.2005, Nürnberg Y1 - 2005 ER - TY - CHAP A1 - Haug, Sonja T1 - Migration Networks and Migration Decision Making T2 - Workshop der Migration Research Group, Hamburgisches Welt Wirtschafts-Archiv, 13.06.2005 Y1 - 2005 ER - TY - CHAP A1 - Haug, Sonja T1 - Aspekte der Integration BT - Ergebnisse aus dem Integrationssurvey des Bundesinstituts für Bevölkerungsforschung und dem Sozio-ökonomischen Panel Y1 - 2005 IS - 04.09.2005 CY - München ER - TY - CHAP A1 - Haug, Sonja T1 - Zur Bedeutung gesetzlicher Rahmenbedingungen für die Familienstrukturen von Immigranten in Deutschland T2 - Jahrestagung der Deutschen Gesellschaft für Bevölkerungswissenschaften e.V. zum Thema 'Familienpolitik und Familienstrukturen', 21.06.-23.06.2001, Berlin Y1 - 2001 ER - TY - CHAP A1 - Haug, Sonja T1 - Sozialstruktur und soziale Integration BT - Eine Analyse der ethnischen Ungleichheiten im Integrationssurvey des BiB T2 - Tagung "Migration und soziale Ungleichheit" der Sektionen "Soziale Ungleichheit und Sozialstrukturanalyse" sowie "Migration und ethnische Minderheiten" der DGS, 30.10.-1.11.2003, MZES, Mannheim Y1 - 2003 ER - TY - CHAP A1 - Haug, Sonja T1 - East-West Migration from Central and Eastern Europe to Germany BT - Different Data Sets, Different Migration Models and Different Predictions of Migration Potential T2 - European Population Conference, 26.-30.8.2003, Warschau Y1 - 2003 ER - TY - CHAP A1 - Haug, Sonja T1 - Raubkopierer als moderne Freibeuter BT - Interessen und Normen bei Urheberrechtskonflikten am Beispiel von Musiktauschbörsen im Internet T2 - Tagung des Arbeitskreises Rational Choice in der Politikwissenschaft zum Thema "Empirische und normative Analyse politischer Konflikte", 7.-8.6.2002, Mainz Y1 - 2002 ER - TY - CHAP A1 - Haug, Sonja T1 - Should I stay or should I go? BT - Determinanten der Rückkehrentscheidung bei Migranten in Deutschland T2 - Jahrestagung der Arbeitsgruppe "Migration - Integration - Minderheiten" der Deutschen Gesellschaft für Bevölkerungswissenschaften e.V., Mannheim, 27.-28.10.2000 Y1 - 2000 ER - TY - CHAP A1 - Haug, Sonja T1 - Die soziale Integration junger türkischer und italienischer Migranten T2 - Herbsttagung des Arbeitskreises 'Migration - Integration - Minderheiten' der Deutschen Gesellschaft für Demographie, 10.-11.10.2002, Leipzig Y1 - 2002 ER - TY - CHAP A1 - Haug, Sonja T1 - Social structure and social integration of young migrants in Germany T2 - European Sociological Association Conference, Session 'Immigration in Ageing Societies', 23.-26.9.2003, Murcia Y1 - 2003 ER - TY - CHAP A1 - Haug, Sonja T1 - Tauschnetzwerke im Internet BT - Der Einfluss von Reziprozitätsnormen T2 - Kolloquium des Soziologischen Instituts der Ludwig-Wilhelms-Universität München, 25.6.2003, München Y1 - 2003 ER - TY - GEN A1 - Haug, Sonja T1 - Migration Y1 - 2003 N1 - Seminar Bevölkerungswissenschaft an der Universität Frankfurt/Main, 28.1.2003 ER - TY - CHAP A1 - Haug, Sonja T1 - Soziales Kapital, Migrationsentscheidungen und Kettenmigrationsprozesse BT - Das Beispiel der italienischen Migranten in Deutschland T2 - Jahrestagung der Deutschen Gesellschaft für Bevölkerungswissenschaft e.V., 5.-7.04.2000, Bochum Y1 - 2000 ER - TY - CHAP A1 - Haug, Sonja A1 - Kreuter, Frauke T1 - Empirical Social Research between Naïve Realism and Instrumentalism T2 - Karl Popper 2002 Centenary Congress, Karl Popper Institut der Universität Wien, 3.-7.7.2002, Wien Y1 - 2002 ER - TY - CHAP A1 - Haug, Sonja T1 - Transnational Migrant Communities BT - The Case of the Italian Migrants in Germany T2 - Conference on Integrating Immigrants in Liberal States, 8-9.05.1998, Florence Y1 - 1998 ER - TY - CHAP A1 - Haug, Sonja T1 - Should I stay or should I go? BT - Return Migration of Italian Immigrants in Germany T2 - European Population Conference 2001, 7.-9.06.2001, Helsinki Y1 - 2001 ER - TY - CHAP A1 - Haug, Sonja T1 - Chain Migration of Italian Migrants in Germany T2 - Workshop zum Thema Migration in Deutschland, 18.06.2002, Mannheimer Zentrum für Europäische Sozialforschung Y1 - 2002 ER - TY - JOUR A1 - Haug, Sonja T1 - Familienstand, Schulbildung und Erwerbstätigkeit junger Erwachsener BT - Eine Analyse der ethnischen und geschlechtsspezifischen Ungleichheiten – Erste Ergebnisse des Integrationssurveys des BiB JF - Zeitschrift für Bevölkerungswissenschaft Y1 - 2002 VL - 27 IS - 1 SP - 115 EP - 144 ER - TY - JOUR A1 - Weber, Karsten T1 - Ökonomische Überlegungen zum Wissenschaftsbetrieb BT - Immaterialgüterrechte, Wissensallmende und Informationsnachhaltigkeit JF - Modern Management Review / Dawna Nazwa - Zardądzanie i Marketing N2 - Nachhaltigkeit und nachhaltiges Wirtschaften sind spätestens seit Mitte der 1980er Jahre wichtige Konzepte sowohl wissenschaftlicher als auch politischer Debatten. Sie werden ins-besondere thematisiert, wenn es um den Umgang mit knappen materiellen Ressourcen geht – fossile Energieträger sind hierfür sowohl als endliche Ressourcen als auch als Gefährdung anderer knapper Ressourcen wie eine saubere Umwelt ein paradigmatisches Beispiel. Da es jedoch nicht nur materielle Ressourcen, sondern auch Immaterialgüter gibt, soll untersucht werden, ob Konzepte der Nachhaltigkeit und des nachhaltigen Wirtschaftens auch in Bezug auf Immaterialgüter wie Informationen und Wissen angewendet werden können. Dazu wird es notwendig sein, zunächst die spezifischen ökonomischen Eigenschaften von Informatio-nen und Wissen herauszuarbeiten. Dabei zeigt sich, dass Immaterialgüter durch Anwendung von Immaterialgüterrechten zu knappen Ressourcen gemacht werden können. Wenn aber auch Informationen und Wissen faktisch zu den knappen Ressourcen gezählt werden müs-sen, so macht es Sinn, Nachhaltigkeit auch für Immaterialgüter zu fordern – dies soll mit dem Ausdruck „Informationsnachhaltigkeit“ bezeichnet werden. Wird das Konzept der In-formationsnachhaltigkeit auf den Wissenschaftsbetrieb angewendet, so kann in Bezug auf den Wissensbestand der Wissenschaft von einer Wissensallmende gesprochen werden. Die schon länger stattfindenden Veränderungen des Wissenschaftsbetriebs und des wissenschaft-lichen Publikationswesens gefährden auf der einen Seite den Bestand der Wissensallmende; auf der anderen Seite finden sich jedoch auch Gegenreaktionen, die Versuche darstellen, bspw. durch den Open Access-Gedanken die Wissensallmende zu erhalten. Allerdings zeigt die Analyse, dass sowohl eine romantisierende Perspektive auf die Wissensallmende und Open Access als auch eine pauschale Kritik am existierenden privatwirtschaftlichen Publikationswesen falsch wären, da beide Teile des wissenschaftlichen Publikationswesens aufeinander angewiesen sind. Y1 - 2013 U6 - https://doi.org/10.7862/rz.2013.hss.55 VL - 20 IS - 4 ER - TY - JOUR ED - Swiaczny, Frank ED - Haug, Sonja T1 - Migration in Europa N2 - Thematisch konzentrieren sich die Aufsätze, entsprechend der Intention der Tagung, auf Länderstudien zur Migration in Europa sowie zur europäischen Migration nach Deutschland. Die Vielzahl der Fallbeispiele bietet einen guten Überblick der aktuell in Europa zu beobachtenden Migrationsmuster. Y1 - 2005 UR - https://www.ssoar.info/ssoar/handle/document/33115 ER - TY - JOUR ED - Swiaczny, Frank ED - Haug, Sonja T1 - Neue Zuwanderergruppen in Deutschland T2 - 7. Tagung des Arbeitskreises Migration - Integration - Minderheiten der Deutschen Gesellschaft für Demographie (DGD) in Zusammenarbeit mit dem Soziologischen Institut der Universität Erlangen in Erlangen am 25. November 2005 Y1 - 2006 UR - https://www.bib.bund.de/Publikation/2006/pdf/Neue-Zuwanderergruppen-in-Deutschland.pdf?__blob=publicationFile&v=1 CY - Wiesbaden ER - TY - JOUR ED - Haug, Sonja ED - Guidotti, Mariella T1 - Emigrazione italiana in Germania BT - Special issue of Studi Emigrazione/International Journal of Migration Studies Y1 - 2005 N1 - italienisch / englisch VL - 42 IS - 158 ER - TY - JOUR A1 - Hofmann, A. A1 - Hierl, Stefan T1 - Kontrolliertes Laserdurchstrahlschweißen JF - Kunststoffe N2 - Obwohl das Laserdurchstrahlschweißen sehr reproduzierbar arbeitet, können Fehler aus den Vorprozessen Compoundieren, Spritzgießen etc. das Schweißergebnis negativ beeinflussen. Dem Anwender steht inzwischen eine breite Palette an Prozessüberwachungsmethoden zur Verfügung, um eine gleich bleibende Produktqualität zu erzielen. Y1 - 2005 UR - https://res.cloudinary.com/sternwald-systems/raw/upload/v1/hugoprd/ARTIKEL_ATTACH/0023FE89_2E241FF70B1C/cf76c9103f760b78d6a3d1b7ecab28f0903541fb/KU_2005_06_Qualitaetssicherung-Kontrolliertes-Laserdurchstrahlschweissen.pdf VL - 95 IS - 6 SP - 36 EP - 38 PB - Hanser ER - TY - JOUR A1 - Hornberger, Helga A1 - Marquis, Peter M. A1 - Franks, J. T1 - The impact of diamond-like coatings on the strength of dental ceramics JF - Journal of Dental Research Y1 - 1995 VL - 74 SP - 522 ER - TY - CHAP A1 - Müller, Jens A1 - Alt, Martin A1 - Dünnweber, Jan A1 - Gorlatch, Sergei T1 - Clayworks BT - A System for Collaborative Real-Time Modeling and High-Performance Simulation T2 - IEEE International Conference on e-Science and Grid Computing (e-Science'06), 2nd, 4-6 Dec 2006, Amsterdam, Netherlands N2 - Clayworks is a software system which integrates collaborative real-time modeling and distributed computing. It addresses the challenge of developing a collaborative workspace with a seamless access to high-performance servers. Clayworks allows modeling of virtual clay objects and running computation-intensive deformation simulations for objects crashing into each other. To integrate heterogeneous computational resources, we adopted modern Grid middleware and provided the users with an intuitive graphical interface. We parallelized the computation of simulations using a Higher-Order Component (HOC) which abstracts over the Globus Web service resource framework (WSRF) used to interconnect our worksuite to the computation server. Clayworks is a representative of a large class of demanding systems which combine collaborative modeling with performance-critical computations, e.g., crash-tests or simulations for biological population evolution. KW - Collaboration KW - Real time systems KW - Computational modeling KW - Collaborative work KW - Biology computing KW - Biological system modeling KW - Deformable models KW - Computer crashes KW - Software systems KW - Concurrent computing Y1 - 2006 SN - 0-7695-2734-5 U6 - https://doi.org/10.1109/E-SCIENCE.2006.261188 ER - TY - CHAP A1 - Dünnweber, Jan A1 - Dumitrescu, Cǎtǎlin L. A1 - Raicu, Ioan A1 - Foster, Ian ED - Priol, Thierry ED - Vanneschi, Marco T1 - Simplifying Grid Application Programming Using Web-Enabled Code Transfer Tools T2 - Towards Next Generation Grids N2 - This paper deals with one of the fundamental properties of grid computing – transferring code between grid nodes and executing it remotely on heterogeneous hosts. Contemporary middleware relies for this purpose on Web Services, which makes application programs complicated and low-level and requires much additional expertise from programmers. We compare two mechanisms for grid application programming with regard to their handling of code transfer – the de-facto standard WS-GRAM in Globus and the higher-level approach based on HOCs (Higher-Order Components). We study the advantages and problems of each approach using a real-world application case study – the sequent alignment problem from bioinformatics. Our experiments show the trade-off between reduced development costs and software complexity when HOCs are used and the higher performance of the applications on the grid when using WS-GRAM. KW - Distributed Systems KW - Resource Management KW - Service Level Agreements KW - Application Code KW - Grid Application KW - Executable Code KW - Code Parameter KW - Globus Toolkit Y1 - 2007 SN - 978-0-387-72497-3 U6 - https://doi.org/10.1007/978-0-387-72498-0_21 SP - 225 EP - 235 PB - Springer CY - Rennes, France ER - TY - CHAP A1 - Dünnweber, Jan A1 - Gorlatch, Sergei A1 - Benoit, Anne A1 - Cole, Murray T1 - Integrating MPI-Skeletons with Web Services T2 - ParCo'05 - International Conference on Parallel Computing, 2005, Malaga, Spain N2 - Interoperating components, implemented in multiple programming languages, are one of the key requirements of grid computing that operates over the borders of individual hardware and software platforms. Modern grid middleware like WSRF facilitates interoperability through service-orientation but it also increases software complexity. We show that Higher-Order Components (HOCs) provide a service-oriented programming abstraction over middleware technology. By offering the pipeline skeleton from the MPI-based eSkel library as a HOC, we show how machine-oriented technologies can be made available via Web Services on grids. We bind a Java-based Web application to the HOC to demonstrate its connectivity: user defined input can be transformed in a highly performant manner by running wavelet computations remotely on parallel machines. Y1 - 2005 UR - http://homepages.inf.ed.ac.uk/mic/Pubs/malaga.pdf SP - 787 EP - 794 ER - TY - BOOK A1 - Dünnweber, Jan A1 - Gorlatch, Sergei T1 - Higher-Order Components for Grid Programming BT - Making Grids More Usable N2 - A major challenge in grid computing remains the application software development for this new kind of infrastructure. Grid application programmers have to take into account several complicated aspects: distribution of data and computations, parallel computations on different sites and processors, heterogeneity of the involved computers, load balancing, etc. Grid programmers thus demand novel programming methodologies that abstract over such technical details while preserving the beneficial features of modern grid middleware. For this purpose, the authors introduce Higher-Order Components (HOCs). HOCs implement generic parallel/distributed processing patterns, together with the required middleware support, and they are offered to users via a high-level service interface. Users only have to provide the application-specific pieces of their programs as parameters, while low-level implementation details, such as the transfer of data across the grid, are handled by the HOCs. HOCs were developed within the CoreGRID European Network of Excellence and have become an optional extension of the popular Globus middleware. The book provides the reader with hands-on experience, describing a broad collection of example applications from various fields of science and engineering, including biology, physics, etc. The Java code for these examples is provided online, complementing the book. The expected application performance is studied and reported for extensive performance experiments on different testbeds, including grids with worldwide distribution. The book is targeted at graduate students, advanced professionals, and researchers in both academia and industry. Readers can raise their level of knowledge about methodologies for programming contemporary parallel and distributed systems, and, furthermore, they can gain practical experience in using distributed software. Practical examples show how the complementary online material can easily be adopted in various new projects. KW - Component-Based Development KW - Distributed Computing KW - Distributed Resource Management KW - Globus KW - Grid and Cloud Computing KW - Java KW - Middleware KW - Web Services KW - distributed systems KW - grid computing KW - load balancing KW - programming Y1 - 2009 SN - 978-3-642-00841-2 U6 - https://doi.org/10.1007/978-3-642-00841-2 PB - Springer CY - Berlin, Heidelberg ER - TY - CHAP A1 - Dünnweber, Jan A1 - Lüdeking, Philipp A1 - Gorlatch, Sergei ED - Danelutto, Marco ED - Fragopoulou, Paraskevi ED - Getov, Vladimir T1 - A Higher-Order Component for Efficient Genome Processing on the Grid T2 - Making Grids Work N2 - Computational grids combine computers in the Internet for distributed data processing and are an attractive platform for the data-intensive applications of bioinformatics. We present an extensible genome processing software for the grid and evaluate its performance. Our software was able to discover previously unknown circular permutations (CP) in the ProDom database containing more than 70MB of protein data. A specific feature of our software is its design as a component: the Alignment HOC, a Higher-Order Component that makes use of the latest Globus toolkit as grid middleware. Besides genome data, the Alignment HOC accepts plugin code for processing this data as its input, and contains all the required configuration to run the component on top of Globus, thus, freeing the non-grid-expert user from dealing with grid middleware. Instead of writing data distribution procedures and configuring the middleware appropriately for every new algorithm, Alignment HOC users reuse the existing component and only write application-specific plugins. To maintain plugins persistently in a reusable manner, we built a web-accessible plugin database with a comfortable administration GUI. The flexible component-based implementation makes it easy to study CPs in other databases (e.g. UniProt/Swiss-Prot) or to use an alignment algorithm different than the standard Needleman-Wunsch. For the efficient distribution of workload, we developed a library of group communication operations for HOCs. KW - higher-order components KW - genome processing KW - sequence alignment KW - middleware Y1 - 2007 SN - 978-0-387-78447-2 U6 - https://doi.org/10.1007/978-0-387-78448-9_28 SP - 351 EP - 362 PB - Springer CY - Boston, MA ER - TY - CHAP A1 - Dünnweber, Jan A1 - Tomasoni, Johannes A1 - Gorlatch, Sergei A1 - Claßen, Michael A1 - Claßen, Philipp A1 - Lengauer, Christian ED - Gorlatch, Sergei ED - Fragopoulou, Paraskevi ED - Priol, Thierry T1 - A Grid Component with Embedded Loop Parallelization T2 - Grid Computing N2 - This work integrates two distinct research areas of parallel and distributed computing, (1) automatic loop parallelization, and (2) component-based Grid programming. The latter includes technologies developed within CoreGRID for simplifying Grid programming: the Grid ComponentModel (GCM) and Higher- Order Components (HOCs). Components support developing applications on the Grid without taking all the technical details of the particular platform type into account (network communication, heterogeneity, etc.). The GCMenables a hierarchical composition of programpieces and HOCs enable the reuse of component code in the development of new applications by specifying application-specific operations in a program via code parameters. When a programmer is provided, e. g., with a compute farm HOC, only the independent worker tasks must be described. But, once an application exhibits data or control dependences, the trivial farm is no longer sufficient. Here, the power of loop parallelization tools, like LooPo, comes into play: by embedding LooPo into a HOC, we show that these two technologies in combination facilitate the automatic transformation of a sequential loop nest with complex dependences (supplied by the user as a HOC parameter) into an ordered task graph, which can be processed on the Grid in parallel. This technique can significantly simplify GCM-based systems which combine multiple HOCs and other components. We use an equation system solver based on the successive overrelaxation method (SOR) as our motivating application example and for performance experiments. KW - Higher-Order Components (HOCs) KW - Loop Parallelization KW - GCM KW - Grid Programming Y1 - 2007 SN - 978-0-387-09456-4 U6 - https://doi.org/10.1007/978-0-387-09457-1_22 SP - 261 EP - 273 PB - Springer CY - Berlin ER - TY - CHAP A1 - Dumitrescu, Câtâlin L. A1 - Epema, Dick H. J. A1 - Dünnweber, Jan ED - Gorlatch, Sergei ED - Bubak, Marian ED - Priol, Thierry T1 - User-Transparent Scheduling for Software Components on the Grid T2 - Achievements in European Research on Grid Systems N2 - Grid applications are increasingly being developed as workflows using well-structured, reusable components. We argue that components with well-defined semantics facilitate an efficient scheduling on the Grid. We have previously developed a user-transparent scheduling approach for Higher-Order Components (HOCs) – parallel implementations of typical programming patterns, accessible and customizable via Web services. Our approach combines three scheduling techniques: using cost functions for reducing communication overhead, reusability of schedules for similar workflows, and the aggregated submission of jobs. We analyze the user-transparent scheduling from four perspectives, namely: the easiness of integration within already existing Grid scheduling systems, the gains for individual users, the resource provider advantages, and the robustness with respect to execution failures. We perform our evaluation using the KOALA Grid scheduler extended to support our user-transparent scheduling, which we run on the DAS-2 system combining over 200 nodes at five sites in the Netherlands. The experimental results show an increase in throughput by more than 100%, a descreasing of the response time by 50%, and a failure reduction by 45% for the considered scenarios KW - User-Transparent Scheduling KW - Co-Allocation KW - Component Technology KW - Higher-Order Components Y1 - 2008 SN - 978-0-387-72811-7 U6 - https://doi.org/10.1007/978-0-387-72812-4_4 SP - 41 EP - 53 PB - Springer CY - Boston, MA ER - TY - JOUR A1 - Müller-Iden, Jens A1 - Dünnweber, Jan A1 - Gorlatch, Sergei A1 - Alt, Martin A1 - Fujita, Hamido A1 - Funyu, Yutaka T1 - Clayworks: Toward user-oriented software for collaborative modeling JF - Knowledge-Based Systems N2 - We consider the development of software systems that integrate collaborative real-time modeling and distributed computing. Our main goal is user-orientation: we need a collaborative workspace for geographically dispersed users with a seamless access of every user to high-performance servers. This paper presents a particular prototype, Clayworks, that allows modeling of virtual clay objects and running computation-intensive deformation simulations for objects crashing into each other. In order to integrate heterogeneous computational resources, we adopt modern Grid middleware and provide the users with an intuitive graphical interface. Simulations are parallelized using a higher-order component (HOC) which abstracts over the web service resource framework (WSRF) used to interconnect our worksuite to the computation server. Clayworks is a representative of a large class of demanding systems which combine collaborative, user-oriented modeling with performance-critical computations, e.g., crash-tests or simulations of biological population evolution. KW - User-oriented software development KW - Collaborative environments KW - Real-time modeling KW - High-performance simulation Y1 - 2008 U6 - https://doi.org/10.1016/j.knosys.2008.12.001 VL - 22 IS - 3 SP - 209 EP - 215 PB - Elsevier CY - Oxford, UK ER - TY - CHAP A1 - Dünnweber, Jan A1 - Aldinucci, Marco A1 - Gorlatch, Sergei A1 - Campa, Sonia A1 - Danelutto, Marco ED - Gorlatch, Sergei ED - Danelutto, Marco T1 - Adaptable Parallel Components for Grid Programming T2 - Integrated Research in GRID Computing N2 - We suggest that parallel software components used for grid computing should be adaptable to application-specific requirements, instead of developing new components from scratch for each particular application. As an example, we take a parallel farm component which is “embarrassingly parallel”, i. e., free of dependencies, and adapt it to the wavefront processing pattern with dependencies that impact its behavior. We describe our approach in the context of Higher-Order Components (HOCs), with the Java-based system Lithium as our implementation framework. The adaptation process relies on HOCs’ mobile code parameters that are shipped over the network of the grid. We describe our implementation of the proposed component adaptation method and report first experimental results for a particular grid application — the alignment of DNA sequence pairs, a popular, time-critical problem in computational molecular biology. KW - Grid Components KW - Adaptable Code KW - Wavefront Parallelism KW - Java KW - Web Services Y1 - 2006 SN - 978-0-387-47656-8 U6 - https://doi.org/10.1007/978-0-387-47658-2_4 SP - 43 EP - 57 PB - Springer Verlag CY - Boston, MA ER - TY - JOUR A1 - Dünnweber, Jan A1 - Kirsch, C. T1 - Report Datenmigration BT - Geeignete Umstiegstrategien in Großprojekten JF - iX - Magazin für professionelle Informationstechnik N2 - Mehrere Terabyte Daten aus einem auf dem Mainframe laufenden COBOL-Programm auf eine SOA-Architektur unter Linux zu migrieren, stellt besondere Anforderungen an die Werkzeuge und Entwickler. Geschickte Kombination vorhandener Tools und effizienter Strategien vermeiden Stillstandszeiten und beschleunigen den Datentransfer. Y1 - 2010 SN - 0935-9680 IS - 11 SP - 95 EP - 100 PB - Heise CY - Hannover ER - TY - CHAP A1 - Dünnweber, Jan A1 - Parlavatzas, Nikos A1 - Gorlatch, Sergei A1 - Baude, Francoise A1 - Legrand, Virginie ED - Gorlatch, Sergei ED - Danelutto, Marco T1 - Automatic Creation of Web Services for Grid Components T2 - Integrated Research in GRID Computing N2 - While high-level software components simplify the programming of grid applications and Web services increase their interoperability, developing such components and configuring the interconnecting services is a demanding task. In this paper, we consider the combination of Higher-Order Components (HOCs) with the Fractal component model and the ProActive library. HOCs are parallel programming components, made accessible on the grid via Web services that use a special class loader enabling code mobility: executable code can be uploaded to a HOC, allowing one to customize the HOC. Fractal simplifies the composition of components and the ProActive library offers a generator for automatically creating Web services from components composed with Fractal, as long as all the parameters of these services have primitive types. Taking all the advantages of HOCs, ProActive and Fractal together, the obvious conclusion is that composing HOCs using Fractal and automatically exposing them as Web services on the grid via ProActive minimizes the required efforts for building complex grid systems. In this context, we solved the problem of exchanging code-carrying parameters in automatically generated Web services by integrating the HOC class loading mechanism into the ProActive library. KW - CoreGRID Component Model (GCM) & Fractal KW - Higher-Order Components Y1 - 2006 SN - 978-0-387-47656-8 U6 - https://doi.org/10.1007/978-0-387-47658-2_3 SP - 31 EP - 42 PB - Springer CY - Sophia Antipolis, France ER - TY - CHAP A1 - Aldinucci, Marco A1 - Dünnweber, Jan A1 - Danelutto, Marco A1 - Golatch, Sergei ED - Grandinetti, Lucio T1 - Optimization techniques for skeletons on grids T2 - Grid Computing: The New Frontier of High Performance Computing N2 - Skeletons are common patterns of parallelism, such as farm and pipeline, that can be abstracted and offered to the application programmer as programming primitives. We describe the use and implementation of skeletons on emerging computational grids, with the skeleton system Lithium, based on Java and RMI, as our reference programming syttem. Our main contribution is the exploration of optimization techniques for implementing skeletons on grids based on an optimized, future-based RMI mechanism, which we integrate into the macro-dataflow evaluation mechanism of Lithium. We discuss three optimizations: 1) a lookahead mechanism that allows to process multiple tasks concurrently at each grid server and thereby increases the overall degree of parallelism, 2) a lazy taskbinding technique that reduces interactions between grid servers and the task dispatcher, and 3) dynamic improvements that optimize the collecting of results and the work-load balancing. We report experimental results that demonstrate the improvements due to our optimizations on various testbeds, including a heterogeneous grid-like environment. Y1 - 2005 SN - 978-0-08-046146-5 U6 - https://doi.org/10.1016/S0927-5452(05)80014-0 SP - 255 EP - 273 PB - Elsevier CY - Scotland ER - TY - CHAP A1 - Gorlatch, Sergei A1 - Dünnweber, Jan ED - Getov, Vladimir ED - Laforenza, Domenico ED - Reinefeld, Alexander T1 - From Grid Middleware to Grid Applications BT - Bridging the Gap with HOCs T2 - Future Generation Grids N2 - This paper deals with the problem of application programming for grid systems that combine heterogeneous data and computational resources via the Internet. We argue that grid programming is still too complex because of the big gap between the currently used and anticipated grid middleware, (e.g., Globus or WSRF) and the application level. We suggest that this gap needs to be closed in future-generation grids and propose a novel approach to bridging the gap by using Higher-Order Components (HOCs) — recurring patterns of parallel behaviour that are provided to the user as program building blocks with pre-packaged implementation and middleware setup. The presentation is illustrated with a simple case study of computing fractal images. Our experiments demonstrate that HOCs can simplify grid application programming significantly, without serious performance loss. KW - components KW - Grid services KW - Globus toolkit KW - mobile code Y1 - 2005 SN - 978-0-387-27935-0 U6 - https://doi.org/10.1007/978-0-387-29445-2_13 SP - 241 EP - 261 PB - Springer Verlag CY - Berlin ER - TY - CHAP A1 - Dünnweber, Jan A1 - Gorlatch, Sergei T1 - HOC-SA BT - A Grid Service Architecture for Higher-Order Components T2 - IEEE International Conference on Services Computing (SCC 2004), 15-18 Sept. 2004, Shanghai, China N2 - The current efforts on programming grid applications often rely on service-oriented approaches like grid services. This work presents HOC-SA -a service architecture for higher-order components, which provides the programmer with reusable and composable patterns of parallelism and is interoperable with the latest Globus toolkit implementations. We describe our implementation of HOC-SA using OGSA-DAI, a framework for integrating grids with distributed databases. We present a simple example application and report first measurements on our grid testbed. KW - Web services KW - Programming profession KW - Parallel processing KW - Grid computing KW - Service oriented architecture KW - Testing KW - Distributed computing KW - Concurrent computing KW - Image segmentation KW - Electronic mail Y1 - 2004 SN - 0-7695-2225-4 U6 - https://doi.org/10.1109/SCC.2004.1358017 ER - TY - JOUR A1 - Testor, Markus A1 - Kusterle, Wolfgang T1 - Druckfestigkeitsentwicklung von Spritzbetonen mit alkalifreier Erstarrungsbeschleunigung JF - Zement + Beton N2 - Spritzbetone mit alkalifreier Erstarrungsbeschleunigung werden ohne alkalische Zusatzmittel (Spritz-Bindemittel mit begrenztem Alkaligehalt oder alkalifreiem Erstarrungsbeschleuniger) verarbeitet. Ein entscheidender Punkt fuer den Einsatz der alkalifreien Erstarrungsbeschleunigung ist das geunstige Auslaugverhalten, speziell hinsichtlich der Einbringung von Alkalien in Tunnelwaesser. Diese Spritzbetone zeigen bei Kontakt mit Wasser das gleiche Auslaugverhalten wie Normalbeton. Alkalihaltige Zusatzmittel fuehrten bisher bei unsachgemaesser Anwendung auch zu Veraetzungen der Haut und der Augen (bis zur Erblindung) sowie zu Reizungen der Schleimhaeute. Die arbeitshygienischen und oekologischen Nachteile klassischer alkalihaetiger Erstarrungsbeschleuniger wurden mit der neuen Technologie ueberwunden. Die Festigkeitsentwicklungen von Spritzbetonen mit alkalifreier Erstarrungsbeschleunigung weisen unterschiediche Charakteristika auf und weichen im Festigkeitsverlauf untereinander beziehungsweise gegenueber herkoemmlichen, mit alkalihaltigen Beschleunigern versehenen Spritzbetonen ab. Eine charakteristische Druckfestigkeitsentwicklung zeigen nur Spritzbetone unter Verwendung von Spritz-Bindemitteln fuer den Einsatz mit ofentrockenen Zuschlaegen beziehungsweise Spritz-Bindemittel auch mit naturfeuchten Zuschlaegen.Werden Zemente auf Basis von Portlandzementklinker mit alkalifreiem Erstarrungsbeschleuniger eingesetzt, so sind grosse Unterschiede im Festigkeitsverlauf, primaer abhaengig vom Erstarrungsbeschleunigergehalt und Wasserzement-Wert, sowohl im Trocken- als auch im Nassspritzverfahren feststellbar. KW - Alkali KW - Construction KW - Shotcrete KW - Strength of materials KW - Tunnels Y1 - 1997 SN - 0514-2946 VL - 97 IS - 3 SP - 20 EP - 25 PB - Zement und Beton Handels- und Werbeges. CY - Wien ER - TY - JOUR A1 - Testor, Markus A1 - Kusterle, Wolfgang T1 - Ermittlung der Spritzbetondruckfestigkeiten - Modifiziertes Setzbolzenverfahren und Abhängigkeit der Druckfestigkeit von der Probekörpergeometrie. JF - Zement + Beton Y1 - 1998 SN - 0514-2946 VL - 98 IS - 3 SP - 20 EP - 23 PB - Zement und Beton Handels- und Werbeges. CY - Wien ER - TY - JOUR A1 - Stichel, Thomas A1 - Laumer, Tobias A1 - Linnenweber, Tim A1 - Amend, Philipp A1 - Roth, Stephan T1 - Mass Flow Characterization of Selective Deposition of Polymer Powders with Vibrating Nozzles for Laser Beam Melting of Multi-material Components JF - Physics Procedia N2 - The generation of multi-material components by laser beam melting (LBM) is a challenge which requires the invention of new coating devices for preparation of arbitrary powder patterns. One solution is the usage of vibration-controlled nozzles for selective deposition of polymer powders. Powder flow can be initiated by vibration enabling a start-stop function without using any mechanical shutter. In this report, the delivery of polymer powder by vibrating nozzles is investigated with respect to their application in LBM machines. Therefore, a steel nozzle attached to a piezo actor and a weighing cell is used in order to measure the stability and time-dependence of the powder mass flow upon vibration excitation with the usage of different kind of powder formulations. The results show that precompression of the powder inside the nozzle by vibration excitation is essential to realize a reliable start-stop function with reproducible discharge cyles and to prevent a initial flush of powder flow. Moreover, the use of different powder materials showed that mass flow is even possible with powders which are not optimized regarding flowability, but is readily enhanced with a factor of 2 to 3 by admixing Aerosil® fumed silica. KW - laser beam melting KW - multi-material deposition KW - polymer powder KW - vibration-controlled powder nozzle Y1 - 2016 U6 - https://doi.org/10.1016/j.phpro.2016.08.099 SN - 1875-3892 SN - 1875-3884 VL - 83 SP - 947 EP - 953 PB - Elsevier CY - Amsterdam [u.a.] ER - TY - JOUR A1 - Launhardt, M. A1 - Wörz, A. A1 - Loderer, A. A1 - Laumer, Tobias A1 - Drummer, Dietmar A1 - Hausotte, Tino A1 - Schmidt, M. T1 - Detecting surface roughness on SLS parts with various measuring techniques JF - Polymer Testing N2 - Selective Laser Sintering (SLS) is an additive manufacturing technique whereby a laser melts polymer powder layer by layer to generate three-dimensional parts. It enables the fabrication of parts with high degrees of complexity, nearly no geometrical restrictions, and without the necessity of a tool or a mold. Due to the orientation in the building space, the processing parameters, and the powder properties, the resulting parts possess an increased surface roughness. In comparison to other manufacturing techniques, e.g. injection molding, the surface roughness of SLS parts results from partially melted powder particles on the surface layer. The actual surface roughness must thus be characterized with respect to the part's eventual application. At the moment, there is no knowledge regarding which measuring technique is most suitable for detecting and quantifying SLS parts' surface roughness. The scope of this paper is to compare tactile profile measurement methods, as established in industry, to optical measurement techniques such as Focus Variation, Fringe Projection Technique (FPT), and Confocal Laser Scanning Microscope (CLSM). The advantages and disadvantages of each method are presented and, additionally, the effect of tactile measurement on a part's surface is investigated. KW - Selective Laser Sintering (SLS) KW - PA12 KW - Surface roughness KW - Measuring technique Y1 - 2016 SN - 0142-9418 U6 - https://doi.org/10.1016/j.polymertesting.2016.05.022 SN - 1873-2348 VL - 53 SP - 217 EP - 226 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Laumer, Tobias A1 - Schmidt, Michael A1 - Stichel, Thomas T1 - Correlation Analysis of Different Building Parameters on the Part Properties of Parts Built by Simultaneous Laser Beam Melting of Polymers T2 - Fraunhofer Direct Digital Manufacturing Conference DDMC 2016 : Conference Proceedings, March 2016, Berlin N2 - Simultaneous Laser Beam Melting of polymers (SLBM) allows the generation of multi-material components,consisting of different thermoplastic polymers, within one additive building process. Besides the common advantagesof conventional Laser Beam Melting (LBM), multi-material components built by SLBM can fulfill different productrequirements like different chemical resistances or haptic material properties within a single part. To achieve suchparts, different powder materials are deposited next to each other and preheated a few degrees below their meltingtemperatures by infrared emitters and laser radiation (λ = 10.60 μm), before in the last step the preheated powdersare molten simultaneously by an additional laser source (λ = 1.94 μm). In this paper, different polymer powders likepolypropylene (PP) and polyamide 12 (PA12) are used for the generation of multi-material specimens. By varyingdifferent building parameters according to a specified design of experiments, their influence on the part properties isanalyzed. Important building parameters are the intensity and the irradiation time of the laser beam used for meltingthe preheated powders. Besides using tensile tests to determine the tensile strength and the elongation at break, theaverage part height in dependence of the energy input is analyzed. The overall aim is to specify the correlationbetween different building parameters regarding the energy deposition on the resulting part properties. Y1 - 2016 UR - https://www.researchgate.net/publication/298791419_Correlation_Analysis_of_Different_Building_Parameters_on_the_Part_Properties_of_Parts_Built_by_Simultaneous_Laser_Beam_Melting_of_Polymers PB - Fraunhofer Verlag ER - TY - JOUR A1 - Laumer, Tobias A1 - Stichel, Thomas A1 - Raths, Max A1 - Schmidt, Michael T1 - Analysis of the Influence of Different Flowability on Part Characteristics Regarding the Simultaneous Laser Beam Melting of Polymers JF - Physics Procedia N2 - Powder based Additive Manufacturing technologies offer huge potential for building parts with almost no geometrical restrictions, but both the process controlling as well as the part properties are strongly dependent on different material characteristics of the material, like the flowability. In this work, different weight percentages of nano-scaled silica dioxide particles (Aerosil®) are admixed to pure polyethylene and polypropylene powder and the resulting flowability is determined. Besides using the Hausner ratio as standardized value, the degree of coverage is introduced as a new characteristic to quantify the powder flowability. The degrees of coverage are compared to the Hausner ratios to allow a discussion and evaluation about the different characteristic values. Additionally, tensile bars consisting of polypropylene are generated to determine the porosity by cross sections and the mechanical part properties by tensile testing. As mechanical part properties, the tensile strength and elongation at break are determined and the effects of different powder flowability on these properties are analyzed. KW - additive manufacturing KW - laser beam melting of polymers KW - material qualification Y1 - 2016 U6 - https://doi.org/10.1016/j.phpro.2016.08.098 SN - 1875-3892 SN - 1875-3884 VL - 83 SP - 937 EP - 946 PB - Elsevier ER - TY - JOUR A1 - Stichel, Thomas A1 - Frick, Thomas A1 - Laumer, Tobias A1 - Tenner, Felix A1 - Hausotte, Tino A1 - Merklein, Marion A1 - Schmidt, Michael T1 - A Round Robin study for selective laser sintering of polymers: Back tracing of the pore morphology to the process parameters JF - Journal of Materials Processing Technology N2 - The mechanical properties of polymer parts built by Selective Laser Sintering are strongly related to the internal microstructure which differs with the applied production parameters. The paper focuses on the back tracing of the pore morphology of laser sintered polyamide-12 samples to the process parameters. Therefore, a data base is used which is supplied by a Round Robin initiative and includes mechanical tensile tests and the microstructural analysis of the pore morphology of several different sample charges built with different machines. The pore morphologies (porosity, pore density, pore shape and pore arrangement) measured by X-ray computed tomography are compared and discussed regarding the employed parameters and the resulting mechanical properties. The investigations point out that pore density is a superior indicator than porosity for mechanical issues. This is especially valid along the build direction since pore morphology has shown to be strongly anisotropic. Moreover, the analysis revealed that pore density is strongly affected by the process temperature, which is proved to be essential for the fabrication of mechanical robust parts using Selective Laser Sintering. Y1 - 2018 U6 - https://doi.org/10.1016/j.jmatprotec.2017.10.013 VL - 252 IS - February SP - 537 EP - 545 PB - Elsevier ER - TY - CHAP A1 - Stichel, Thomas A1 - Amend, Philipp A1 - Laumer, Tobias A1 - Roth, Stephan T1 - Multi-material deposition of polymer powders with vibrating nozzles inside laser beam melting machines T2 - 6th International Conference on Additive Technologies - iCAT 2016 : proceedings : Nürnberg, Germany, 29.-30. November 2016 N2 - The generation of multi-material components using Laser beam melting (LBM) is a challenge which requires the invention of new coating devices for the preparation of arbitrary powder patterns. One solution is the usage of vibration-controlled nozzles for selective deposition of polymer powders. Powder flow can be initiated by vibration even when using powders with low flowability. In this report, the selective deposition of polymer powder by vibrating nozzles is investigated with respect to their application in LBM machines. Therefore, a steel nozzle attached to a piezo actor is applied, whereas the nozzle itself features internal channels which allow the precise control of the powder temperature using heat transfer oil. The setup is used to study the influence of temperature on the powder mass flow. The results show that, next to the vibration mode, the temperature strongly influences the powder mass flow which is done by affecting the moisture and thus the particle-particle adhesion forces. This shows that a precise control of the powder temperature inside the nozzle is required in order to achieve a constant mass flow and thus a successful application of vibrating nozzles inside LBM machines. KW - laser beam melting KW - multi-materialdeposition KW - PA12 KW - polyamide 12 KW - vibration-controlled powder nozzle Y1 - 2016 PB - Interesansa - zavod CY - Ljubljana ER - TY - JOUR A1 - Laumer, Tobias A1 - Stichel, T. A1 - Nagulin, K. A1 - Schmidt, M. T1 - Optical analysis of polymer powder materials for Selective Laser Sintering JF - Polymer Testing N2 - This study increases the basic understanding of optical material properties of polymer powders used in selective laser sintering (SLS). Therefore, different polymer powder materials were analyzed regarding their optical material properties with an integration spheres measurement setup. By the measurements a direct connection between the absorption behavior of the solid material and the overall optical material characteristics of the same material in powdery form could be shown. The results were used to develop an advanced explanation model for the optical material properties of powders. At present, existing explanation models only consider the occurring of multiple reflections in the gaps between the particles to explain the overall optical material properties of powder materials. Thus, by also considering the absorption behavior of the single particles, the basic understanding of the beam-matter interaction and their effect on the optical material properties of powder materials can be expanded. KW - Additive manufacturing KW - Selective Laser Sintering KW - Optical material characteristics KW - Integration spheres KW - Material qualification KW - New materials Y1 - 2016 U6 - https://doi.org/10.1016/j.polymertesting.2016.10.010 SN - 1873-2348 SN - 0142-9418 VL - 56 SP - 207 EP - 213 PB - Elsevier Science CY - Amsterdam [u.a.] ER - TY - CHAP A1 - Laumer, Tobias A1 - Schmidt, Michael A1 - Stichel, Thomas T1 - Influence of temperature gradients on the part properties for the simultaneous laser beam melting of polymers T2 - Proceedings of Laser in Manfacturing Conference 2015, June 22 - June 25, 2015 Munich, Germany N2 - By Laser Beam Melting of polymers (LBM), parts with almost any geometry can be built directly out of CAD files without the need for additional tools. Thus, prototypes or parts in small series production can be generated within short times. Up to now, no multi-material parts have been built by LBM, which is a major limitation of the technology. To realize multi-material parts, new mechanisms for depositing different polymer powders as well as a new irradiation strategy are needed, by which polymers with different melting temperatures can be warmed to their specific preheating temperatures and be molten simultaneously. This is achieved by simultaneous laser beam melting (SLBM). In the process, two different materials are deposited next to each other and preheated a few degrees below their melting temperatures by infrared emitters and laser radiation (λ = 10.60 µm), before in the last step the two preheated powders are molten simultaneously by an additional laser (λ = 1.94 µm). So far, multi-material tensile bars have been realized and analyzed regarding their boundary zone between both materials. The experiments showed that the temperature gradients in the boundary zone and along the building direction seem to be of great importance for the process stability and the resulting part properties. Therefore, a detailed analysis of the occurring temperature gradients during the process is needed to identify adequate process adjustments regarding the temperature controlling. To analyze the temperature gradients, thermocouples positioned inside the powder bed are used. By varying the temperature of the building platform, the influence of different temperature gradients on the resulting part properties is shown. KW - additive manufacturing KW - laser beam melting of polymers KW - multi-material parts Y1 - 2015 UR - https://www.wlt.de/lim/Proceedings/Stick/PDF/Contribution241_final.pdf ER - TY - CHAP A1 - Laumer, Tobias T1 - The influence of micro-sized structures on the compound strength of multi-material components built by Simultaneous Laser Beam Melting of Polymers T2 - Proceedings of LPM2016 - the 17th International Symposium on Laser Precision Microfabrication, 2016, Xian, China N2 - Simultaneous laser beam melting (SLBM) allows the direct realization of multi-material components consisting of different polymer materials by a single Additive Manufacturing (AM) process. To achieve a high compound strength between different materials by adhesive bonding, a common boundary zone based on diffusion of the macromolecules is necessary and thus, both materials needs to be compatible regarding their specific adhesion compatibility. However, by SLBM also incompatible polymers can be processed to multi-material parts. If two incompatible polymers are processed, a positive locking between the different materials is necessary to achieve a connection between the materials. The positive locking results of a random mixture process of the different powder materials during the powder deposition process by a two chamber recoater system, which leads to the forming of undercuts of one material in the other during the melting and recrystallization. In this paper, thermoplastic elastomer (TPE) and polypropylene (PP) powders, which are incompatible, are processed to multi-material specimens. By qualifying basic material properties, their influence on the process and especially on the forming of undercuts in the boundary zone is analyzed. To also allow the analysis of the influence of both material and process parameters on the resulting part properties, tensile test specimens are built and their tensile strength is determined. Additionally, cross sections of the boundary zone are prepared and analyzed by microscope images. KW - 3D printing KW - additive manufacturing KW - multi-material parts KW - powder material qualification KW - selective laser beam melting of polymers Y1 - 2016 UR - https://www.researchgate.net/publication/304199990_The_influence_of_micro-sized_structures_on_the_compound_strength_of_multi-material_components_built_by_Simultaneous_Laser_Beam_Melting_of_Polymers ER - TY - JOUR A1 - Laumer, Tobias A1 - Stichel, Thomas A1 - Riedlbauer, Daniel A1 - Amend, Philipp A1 - Mergheim, Julia A1 - Schmidt, Michael T1 - Realization of multi-material polymer parts by simultaneous laser beam melting JF - Journal of Laser Micro / Nanoengineering N2 - In this paper, first results regarding the realization of multi-material parts by Simultaneous Laser Beam Melting (SLBM) of polymers are presented. This new approach allows the layerwise generation of parts consisting of different polymer materials within one building process. Besides the typical advantages of additive manufacturing technologies, such parts can fulfill different product requirements concomitant and therefore could enlarge the overall field of application. The powder materials used for this paper are polyethylene (PE) and a polyamide based thermoplastic elastomer (TPE). After depositing the powder materials next to each other, infrared-emitters heat the lower melting polymer and a CO2 laser provides the preheating temperature of the higher melting polymer. In the last step, a thulium fibre laser melts the two preheated powders simultaneously. The realized specimens are characterized by cross sections and their tensile strengths are determined. Additionally, the new approach of the simultaneous energy irradiation is investigated using a Finite Element Analysis in order to gain a more profound process understanding. In that sense, the influence of the size of the exposure area on the reachable maximum temperatures inside that area was analyzed by the simulation and compared to experimental studies. KW - additive manufacturing KW - Multi-Material Parts KW - NewMaterials KW - Simultaneous Laser Beam Melting of Polymers Y1 - 2015 UR - https://www.researchgate.net/publication/274250254_Realization_of_multi-material_polymer_parts_by_simultaneous_laser_beam_melting VL - 10 IS - 2 PB - Japan Laser Processing Society ER - TY - JOUR A1 - Blümel, Christina A1 - Sachs, Marius A1 - Laumer, Tobias A1 - Winzer, Bettina A1 - Schmidt, Jochen A1 - Schmidt, Michael A1 - Peukert, Wolfgang A1 - Wirth, Karl-Ernst T1 - Increasing flowability and bulk density of PE-HD powders by a dry particle coating process and impact on LBM processes JF - Rapid Prototyping Journal N2 - Purpose – The purpose of this paper is to demonstrate the processability of cohesive PE-HD particles in laser beam melting processes (LBM) of polymers. Furthermore, we present a characterization method for polymer particles, which can predict the quality of the powder deposition via LBM processes. Design/methodology/approach – This study focuses on the application of dry particle coating processes to increase flowability and bulk density of PE-HD particles. Both has been measured and afterwards validated via powder deposition of PE-HD particles in a LBM machine. Findings – For efficient coating in a dry particle coating process, the PE-HD particles and the attached nanoparticles need to show similar surface chemistry, i.e. both need to behave either hydrophobic or hydrophilic. It is demonstrated that dry particle coating is appropriate to enhance flowability and bulk density of PE-HD particles and hence considerably improves LBM processes and the resulting product quality. Originality/value – At present, in LBM processes mainly polyamide (PA), 12 particles are used, which are so far quite expensive in comparison to, for example, PE-HD particles. This work provides a unique and versatile method for nanoparticulate surface modification which may be applied to a wide variety of materials. After the coating, the particles are applicable for the LBM process. Our results provide a correlation between flowability and bulk density and the resulting product quality. KW - Polymers KW - Bulk density KW - Dry particle coating KW - Flowability KW - Hydrophilic KW - Hydrophobic Y1 - 2015 U6 - https://doi.org/10.1108/RPJ-07-2013-0074 SN - 1758-7670 SN - 1355-2546 VL - 21 IS - 6 SP - 697 EP - 704 PB - Emerald ER - TY - JOUR A1 - Laumer, Tobias A1 - Stichel, Thomas A1 - Amend, Philipp A1 - Schmidt, Michael T1 - Simultaneous laser beam melting of multimaterial polymer parts JF - Journal of Laser Applications N2 - By simultaneous laser beam melting (SLBM), parts consisting of different polymer powders can be additively manufactured within one building process. Besides the advantages of conventional LBM, e.g., not needing additional tools and being able to realize parts with almost any geometry, different product requirements can be achieved within a single part. Product requirements may be different chemical resistances or haptic material properties. Therefore, SLBM enlarges the application field for additive manufacturing in general. In the process, two different materials are deposited on the building platform and preheated a few degrees below the melting temperature of the lower melting polymer by infrared emitters. Afterward, a CO2 laser (λ = 10.6 μm) provides the energy for the temperature difference between the preheating temperatures of both materials. Finally, a digital light processing chip is used to achieve simultaneous and flexible energy deposition for melting both preheated polymers. By illuminating the chip with a laser, parts of the beam can be flexibly guided onto the powder bed or into a beam trap. As laser, a single mode thulium laser (λ = 1.94 μm) is used. After melting the layer, a new layer is deposited and the process starts anew. In this paper, polypropylene and polyamide 12 are used as materials. After analyzing the material and melting behavior during the process by a high-resolution thermal imaging system, the parts are qualified regarding their material compatibility at the boundary zone and porosity by cross sections. KW - additive manufacturing KW - material qualification KW - Multi-Material Parts KW - new processes Y1 - 2015 U6 - https://doi.org/10.2351/1.4906303 SN - 1938-1387 SN - 1042-346X VL - 27 IS - S2 PB - Laser Institute of America ER - TY - JOUR A1 - Laumer, Tobias T1 - Realization of Multi-material Polymer Parts by Simultaneous Laser Beam Melting JF - Journal of Laser Micro/Nanoengineering (JLMN) N2 - In this paper, first results regarding the realization of multi-material parts by Simultaneous Laser Beam Melting (SLBM) of polymers are presented. This new approach allows the layerwise generation of parts consisting of different polymer materials within one building process. Besides the typical advantages of additive manufacturing technologies, such parts can fulfill different product requirements concomitant and therefore could enlarge the overall field of application. The powder materials used for this paper are polyethylene (PE) and a polyamide based thermoplastic elastomer (TPE). After depositing the powder materials next to each other, infrared-emitters heat the lower melting polymer and a CO2 laser provides the preheating temperature of the higher melting polymer. In the last step, a thulium fibre laser melts the two preheated powders simultaneously.The realized specimens are characterized by cross sections and their tensile strengths are determined. Additionally, the new approach of the simultaneous energy irradiation is investigated using a Finite Element Analysis in order to gain a more profound process understanding. In that sense, the influence of the size of the exposure area on the reachable maximum temperatures inside that area was analyzed by the simulation and compared to experimental studies. KW - additive manufacturing KW - Multi-Material Parts KW - NewMaterials KW - Simultaneous Laser Beam Melting of Polymers Y1 - 2015 U6 - https://doi.org/10.2961/jlmn.2015.02.0006 VL - 10 IS - 2 SP - 140 EP - 147 PB - Japan Laser Processing Society ER - TY - CHAP A1 - Stichel, Thomas A1 - Laumer, Tobias A1 - Amend, Philipp A1 - Wittmann, Peter T1 - Selective deposition of polymer powder by vibrating nozzles for laser beam melting T2 - Proceedings of Laser in Manfacturing Conference 2015, June 22, 2015 - June 25, 2015, Munich, Germany N2 - In this report, the delivery of polyamide 12 (PA 12) powder and powder layer preparation by vibrating steel nozzles is investigated and discussed with respect to its application for laser beam melting. Therefore, a setup was realized which includes a steel nozzle attached to a piezo actor as well as a positioning system. In order t o investigate the mass flow characteristics in dependency on the applied vibration state, a weighing cell is used enabling time-resolved mass flow measurements. Moreover, single-layer patterns consisting of colored and uncolored polyamide 12 were created and characterized regarding surface homogeneity and selectivity before as well as after the melting of the powder layers by a hot plate. KW - laser beam melting KW - multi-material KW - polyamide 12 KW - vibrating nozzle Y1 - 2015 UR - https://www.wlt.de/lim/Proceedings/Stick/PDF/Contribution241_final.pdf ER - TY - CHAP A1 - Laumer, Tobias A1 - Roth, Stephan A1 - Stichel, Thomas A1 - Schmidt, Michael T1 - Strategien zur Erzeugung von dreidimensionalen Multi-Material-Bauteilen T2 - 4. Industriekolloquium des Sonderforschungsbereichs 814 - Additive Fertigung 814, 2015, Nürnberg Y1 - 2015 UR - https://www.researchgate.net/publication/295860904_Strategien_zur_Erzeugung_von_dreidimensionalen_Multi-Material-Bauteilen SN - 978-3931864651 SN - 3931864650 ER - TY - CHAP A1 - Laumer, Tobias A1 - Koopmann, Jonas A1 - Stichel, Thomas A1 - Amend, Philipp T1 - Generation of multi-material parts with alternating material layers by Simultaneous Laser Beam Meltingof polymers T2 - International Conference on Additive Technologies, 15 - 17 Oct 2014, Wien N2 - By using Additive Manufacturing technologies, like Laser Beam Melting (LBM) of polymers, parts can be realized within single days and necessary modifications can be quickly adapted. With increasing complexity, products are often made out of different polymer materials and the need for multi-material parts is an increasing industry requirement, which cannot be fulfilled by the single material parts realizable by LBM. Therefore, Simultaneous Laser Beam Melting (SLBM) as a new Additive Manufacturing technology offers the possibility to build parts consisting of different polymer materials. The realizable parts combine different material properties, like differing stiffness or chemical resistances, within a single part. Up to now, different materials are deposited next to each other on the building platform, thus the boundary surface between the different polymers is orientated perpendicular to the building direction. For this paper, the polymer powders are alternated in building direction. Thus, the boundary surface is orientated horizontally and is larger, both influencing the boundary surface and resulting part properties, which are analyzed by a high-resolution thermal imaging system and by cross sections. KW - additive manufacturing KW - Multi-Material Parts KW - Simultaneous Laser Beam Melting Y1 - 2014 UR - https://www.researchgate.net/publication/274250275_Generation_of_multi-material_parts_with_alternating_material_layers_by_Simultaneous_Laser_Beam_Meltingof_polymers ER - TY - CHAP A1 - Stichel, Thomas A1 - Amend, Philipp A1 - Laumer, Tobias A1 - Roth, Stephan T1 - Electrostatic Multi-Material Powder Deposition for Simultaneous Laser Beam Melting T2 - International Conference on Information, Communication and Automation Technologies (ICAT), 2014, Wien N2 - In this paper, the use of electrostatic polymer powder transfer methods for the preparation of multi-material layers is discussed with respect to the application in Simultaneous Laser Beam Melting (SLBM). Therefore, the basic principles of the single process steps as well as the challenges in combination with SLBM are considered verifying the critical process steps. On that base, process concepts are developed which might enable the fabrication of high quality multi-material parts in the future. Moreover, since the polymer powders typically used with Laser Beam Melting differ strongly from common toners for e. g. electrophotographic printing, an experimental setup was built to study the powder transfer with an electrically chargeable transfer plate using polyamide 12 powder. The results of this study show that transfer of powders usable for Laser Beam Melting can be achieved, but depends on the electric field strength which is a function of the gap between transfer and substrate plate and the intermediate electric potential. Y1 - 2014 UR - https://www.researchgate.net/publication/280154608_Electrostatic_Multi-Material_Powder_Deposition_for_Simultaneous_Laser_Beam_Melting ER - TY - JOUR A1 - Stichel, Thomas A1 - Amend, Philipp A1 - Laumer, Tobias A1 - Roth, Stephan T1 - Polymer Powder Deposition using Vibrating Capillary Nozzles for Additive Manufacturing JF - Information, Communication and Automation Technologies (ICAT), 2014, Wien N2 - Abstract — In this report, the dry delivery of polyamide 12 (PA 12) powder for the preparation of powder layers in laser beam melting (LBM) is investigated. Therefore, an experimental setup was built which consists of a glass nozzle assembled on a piezo-electric actuator. By applying a sinusoidal voltage signal to the actuator, the nozzle is set into vibration mode which enhances the powder delivery through the nozzle. By using this effect, powder mass flow is controlled and a valve-like start and stop function is realized. In order to identify suitable process parameters, a broad range of vibration modes were investigated using two nozzles made from glass with different orifice diameters. Therefore, the vibration frequency and the voltage signal of the actuator were varied and the resulting mass flow was detected by a balance. It was found that both the frequency and the voltage signal affect the mass flow and its stability but with different impact. Moreover, powder lines were deposited with different velocities in order to characterize the setup regarding applicability for highly selective powder deposition for LBM. KW - multi-material deposition KW - additive manufacturing KW - vibrating nozzle KW - dry powder delivery KW - polyamide 12 Y1 - 2014 ER - TY - JOUR A1 - Stichel, Thomas A1 - Laumer, Tobias A1 - Baumüller, Tobias A1 - Amend, Philipp A1 - Roth, Stephan T1 - Powder Layer Preparation Using Vibration-controlled Capillary Steel Nozzles for Additive Manufacturing JF - Physics Procedia N2 - In this report, the dry delivery of polyamide 12 powders by vibrating capillary steel nozzles is investigated and discussed regarding its potential for powder layer preparation in Laser Beam Melting. Therefore, a setup including a steel nozzle assembled on a piezoelectric actuator is presented, which enables the precise control over very small powder quantities by vibration excitation. An analysis reveals that the mass flow through the nozzle can be adjusted by the vibration modes in a certain range depending on the nozzle's specifications, whereas the vibration modes themselves show a complicated behaviour. Using a positioning system in combination with the vibrating nozzle, single-layer patterns consisting of polyamide 12 are produced and characterized regarding surface homogeneity and selectivity using a laser stripe sensor. KW - additive manufacturing KW - dry powder delivery KW - multi-material deposition KW - polyamide 12 KW - vibrating nozzle Y1 - 2014 U6 - https://doi.org/10.1016/j.phpro.2014.08.158 SN - 1875-3892 SN - 1875-3884 VL - 56 SP - 157 EP - 166 PB - Elsevier ER - TY - JOUR A1 - Laumer, Tobias A1 - Wudy, Katrin A1 - Drexler, Maximilian A1 - Amend, Philipp A1 - Roth, Stephan A1 - Drummer, Dietmar A1 - Schmidt, Michael T1 - Fundamental investigation of laser beam melting of polymers for additive manufacture JF - Journal of Laser Applications N2 - By selective laser sintering (SLS), polymer powders are molten layer by layer to build conventional prototypes or parts in small series with geometrical freedom that cannot be achieved by other manufacturing technologies. The SLS process is mainly defined by the beam–matter interaction between powder material, laser radiation and different material characteristics by itself. However the determination of these different material characteristics is problematic because powder material imposes certain requirements that cannot sufficiently be provided by conventional measurement methods. Hence new fundamental investigation methods to determine the optical and thermal material characteristics like the thermal diffusivity, thermal conductivity, or the influence of different heating rates on the melting behavior are presented in this paper. The different analysis methods altogether improve the process of understanding to allow recommendations for the future process controlling. Y1 - 2014 U6 - https://doi.org/10.2351/1.4892848 SN - 1938-1387 SN - 1042-346X VL - 26 IS - 4 PB - AIP Publishing ER - TY - CHAP A1 - Laumer, Tobias A1 - Stichel, Thomas A1 - Amend, Philipp A1 - Roth, Stephan A1 - Schmidt, Michael T1 - Analysis of Temperature Gradients during Simultaneous Laser Beam Melting of Polymers T2 - Physics Procedia N2 - By simultaneous laser beam melting (SLBM), different polymer powders can be processed to multi-material parts, which offers the potential to enlarge the field of application for conventional LBM. In a SLBM process, a powder bed consisting of different polymers and therefore with different melting and crystallization temperatures is deposited. Besides the use of infrared emitters for preheating the lower melting polymer, a CO2 laser distributes the necessary preheating temperature of the higher melting polymer. In the last step, a thulium fibre laser distributes the energy necessary for melting the two preheated powders simultaneously. In order to analyze the temperature gradients of the process on the powder surface and in deeper layers, a high-resolution thermal imaging system and thermocouples are used. KW - Additive manufacturing KW - Multi-Material Parts KW - Process Qualification KW - Simultaneous Laser Beam Melting Y1 - 2014 U6 - https://doi.org/10.1016/j.phpro.2014.08.159 VL - 56 SP - 167 EP - 175 PB - Elsevier ER - TY - CHAP A1 - Laumer, Tobias A1 - Karg, Michael Cornelius Hermann A1 - Schmidt, Michael T1 - Additive Manufacturing of Gradient and Multimaterial Components T2 - International Conference on Competitive Manufacturing COMA, 2013, Stellenbosch N2 - In the paper first results regarding the realisation of gradient and multi-material parts manufactured by Laser Beam Melting in powder bed of metals and polymers are published. Gradient properties of additively manufactured metal parts can be achieved by varying the composition of alloying components in the powder and adapting process strategies. As an alternative to atomizing pre-alloyed materials, mixtures of different powders are investigated. For realizing multi-material-parts from polymers, at first relevant material properties concerning compatibility have to be analysed. Therefore the paper shows the main requirements for compatibility between different materials and also first results regarding the compatibility of polymer powders and possible combinations for the manufacturing of multi-material components by laser beam melting of polymers. KW - additive manufacturing KW - Laser Beam Melting in Powder Bed KW - New Materials Y1 - 2013 UR - https://www.researchgate.net/publication/318723870_Additive_Manufacturing_of_Gradient_and_Multimaterial_Components ER - TY - CHAP A1 - Laumer, Tobias A1 - Appel, Peter A1 - Stichel, Thomas A1 - Amend, Philipp T1 - Untersuchungen zum Absorptionsverhalten von Pulverschüttungen für das Laserstrahlschmelzen von Kunststoffen Conference T2 - Rapid.Tech, 2013, Erfurt N2 - Die Energieeinbringung in Form von elektromagnetischer Strahlung in das Pulverbett beim selektiven Laserstrahlschmelzprozess von Kunststoffen wird maßgeblich durch das Absorptionsverhalten der Pulverwerkstoffe bestimmt. Aufgrund von Vielfachreflexionen an den einzelnen Pulverpartikeln in den Poren weisen Pulverwerkstoffe im Vergleich zu makroskopischen Festkörpern andere Absorptionseigenschaften auf. Im vorliegenden Beitrag wird daher ein geeigneter Messaufbau zur Bestimmung der optischen Materialeigenschaften von verschiedenen Pulverwerkstoffen vorgestellt. Mittels eines Ulbricht-Kugel-Messaufbaus wird der Reflexions-, der Transmissions- und der Absorptionsgrad von pulverförmigen Werkstoffen bei einer Wellenlänge von 10,6 µm eines CO2-Lasers und unterschiedlichen Schichtstärken ermittelt. Neben den Werkstoffen Polyamid 12 und Polyethylen im reinen Zustand werden Mischungen mit Additiven, wie beispielsweise Graphit, analysiert und verglichen. Durch die Beimischungen kann eine für den Schmelzprozess zu geringe Absorption des reinen Kunststoffes wie im Fall von Polyethylen-Pulver bei einer Wellenlänge von 10,6 µm gezielt erhöht werden, wodurch die Entwicklung neuer Pulverwerkstoffe erleichtert wird. KW - Additive Fertigung KW - Laserstrahlschmelzen von Kunststoffen KW - Werkstoffqualifizierung Y1 - 2013 UR - https://www.researchgate.net/publication/274250200_Untersuchungen_zum_Absorptionsverhalten_von_Pulverschuttungen_fur_das_Laserstrahlschmelzen_von_Kunststoffen ER - TY - CHAP A1 - Laumer, Tobias A1 - Karg, Michael Cornelius Hermann A1 - Schmidt, Michael T1 - Neue Prozessstrategien zur Herstellung von Multi- Material-Bauteilen und Gradientenwerkstoffen T2 - Zukunft individuell gestalten : Industriekolloquium des Sonderforschungsbereichs 814 - Additive Fertigung ; [Dezember 2012 ; Nürnberg] N2 - Das additive Fertigungsverfahren, dem gemeinhin die größten Potentiale zugesprochen werden, ist das Laserstrahlschmelzen im Pulverbett von Kunststoffen (LSS-K) und von Metallen (LSS-M). Wie bei anderen Techniken der additiven Fertigung werden Bauteile direkt aus CAD-Dateien ohne zusätzliche Werkzeuge bei enormer konstruktiver Freiheit gefertigt. Die resultierenden Werkstoffeigenschaften sind vergleichbar mit konventionelleren Prozessrouten wie etwa dem Spritzgießen thermoplastischer Polymere beziehungsweise auf der Seite der Metalle dem Schmieden oder Gießen. Derzeit wird der Einsatz des LSS zur Fertigung von Endprodukten in kleinen Stückzahlen erschwert von nicht ausreichender Prozessstabilität und, insbesondere bei Kunststoffen, von der eingeschränkten Werkstoffauswahl. Bisher werden für beide Werkstoffklassen Bauteile aus jeweils einem einzigen Ausgangsmaterial hergestellt. Näherungsweise erzeugt LSS also einheitliche Materialeigenschaften über das gesamte Bauteil hinweg. Ein Ansatz, der in den Teilprojekten A5 und B6 des Sonderforschungsbereichs 814 verfolgt wird, ist die Realisierung von Multi-Material-Bauteilen mittels LSS-K beziehungsweise LSS-M. Y1 - 2012 UR - https://www.researchgate.net/publication/338986395_Neue_Prozessstrategien_zur_Herstellung_von_Multi-_Material-Bauteilen_und_Gradientenwerkstoffen SP - 101 EP - 116 CY - Erlangen ER - TY - CHAP A1 - Laumer, Tobias A1 - Stichel, T. A1 - Sachs, M. A1 - Amend, Philipp A1 - Schmidt, Michael ED - Bártolo, Paulo T1 - Qualification and modification of new polymer powders for laser beam melting using Ulbricht spheres T2 - High value manufacturing : Advanced research in virtual and rapid prototyping ; Proceedings of the 6th International Conference on Advanced Research and Rapid Prototyping, Leiraia, Portugal, 1-5 October, 2013 N2 - The restricted amount of available materials for Laser Beam Melting (LBM) of polymers is one of the main limitations for expanding the technology. Current qualification methods deal with problems like inadequate powder flowability or high part porosities among others but do not offer a detailed analysis of the important beam-matter-interaction between powder particles and electro-magnetic laser radiation. In this paper, polyethylene powder is qualified for the LBM process and specifically analyzed regarding the optical material properties of the powder for a wavelength of 10.6 μm. By admixing graphite as absorption intensifier the change of the optical material properties and the thereby connected processing parameters are analyzed. Furthermore an explanation approach is given to explain the relation between different transmittances of different powder particles and the optical material properties of the polymer powders. Y1 - 2014 UR - https://www.researchgate.net/publication/286311000_Qualification_and_modification_of_new_polymer_powders_for_laser_beam_melting_using_Ulbricht_spheres SN - 978-1-138-00137-4 SN - 1138001376 SP - 255 EP - 260 PB - CRC Press CY - Boca Raton ER - TY - JOUR A1 - Laumer, Tobias A1 - Karg, Michael Cornelius Hermann A1 - Schmidt, Michael T1 - Laser Beam Melting of Multi-Material Components JF - Physics Procedia N2 - First results regarding the realisation of multi-material components manufactured by Laser Beam Melting of polymers and metals are published. For realising composite structures from polymer powders by additive manufacturing, at first relevant material properties regarding compatibility have to be analysed. The paper shows the main requirements for compatibility between different materials and offers first results in form of a compatibility matrix of possible combinations for composite structures.For achieving gradient properties of additively manufactured metal parts by using composite materials the composition of alloying components in the powder and adapted process strategies are varied. As an alternative to atomizing pre-alloyed materials, mixtures of different powders are investigated. KW - additive manufacturing KW - laser beam melting Y1 - 2012 U6 - https://doi.org/10.1016/j.phpro.2012.10.068 SN - 1875-3892 SN - 1875-3884 VL - 39 SP - 518 EP - 525 PB - Elsevier ER - TY - CHAP A1 - Laumer, Tobias A1 - Karg, Michael Cornelius Hermann A1 - Schmidt, Michael T1 - Neue Prozessstrategien zur Herstellung von Multi-Material-Bauteilen mit Hilfe des Laserstrahlschmelzens T2 - Industriekolloquium des SFB 814, 2, 2013, Nürnberg Y1 - 2013 UR - https://www.researchgate.net/publication/295861222_Neue_Prozessstrategien_zur_Herstellung_von_Multi-Material-Bauteilen_mit_Hilfe_des_Laserstrahlschmelzens SN - 978-3-931864-59-0 PB - Universität Erlangen-Nürnberg, Lehrstuhl für Kunststofftechnik ER - TY - JOUR A1 - Bakaev, V. V. A1 - Snarskii, Andrei A. A1 - Shamonin (Chamonine), Mikhail T1 - The permeability and remanent magnetization of a randomly inhomogeneous two-phase medium JF - Technical Physics N2 - A randomly inhomogeneous composite consisting of two, ferromagnetic and nonmagnetic (para-or diamagnetic), phases is considered. The dependence of the effective permeability of the composite on the concentration of the ferromagnetic phase and on the applied magnetic field is found for the case of the negligible hysteresis loop. When the hysteresis loop is appreciable, the remanent magnetization as a function of the ferromagnet concentration is calculated. KW - Magnetic Field KW - Permeability KW - Hysteresis Loop KW - Remanent Magnetization KW - Applied Magnetic Field Y1 - 2002 U6 - https://doi.org/10.1134/1.1435901 VL - 47 SP - 125 EP - 128 PB - Springer ER - TY - JOUR A1 - Snarskii, Andrei A. A1 - Zhenirovskyy, M. I. A1 - Shamonin (Chamonine), Mikhail T1 - The effective properties of macroscopically nonuniform ferromagnetic composites: Theory and numerical experiment JF - Journal of Experimental and Theoretical Physics N2 - Various theoretical models (self-consistent field, local linearization, and percolation theory methods and an analytic solution of the linear problem for an ordered medium) for calculating the magnetostatic properties of two-phase composites containing one ferromagnetic phase were considered. The concentration and field dependences of the effective magnetic permeability were found. A method for determining the coercive force and remanent magnetization as functions of the ferromagnetic phase concentration was suggested. Numerical experiments were performed for composites with a periodic distribution of circular inclusions. The results were compared with the analytically calculated effective magnetic permeability. KW - Numerical Experiment KW - Remanent Magnetization KW - Field Dependence KW - Coercive Force KW - Magnetic Permeability Y1 - 2003 U6 - https://doi.org/10.1134/1.1545385 VL - 96 SP - 66 EP - 77 PB - Springer ER - TY - JOUR A1 - Shamonin (Chamonine), Mikhail A1 - Snarskii, Andrei A. A1 - Zhenirovskyy, M. I. T1 - Effective magnetic permeability of ferromagnetic composites. Theoretical description and comparison with experiment JF - NDT & E International N2 - Two analytical methods based on the so-called local linearization of magnetostatic properties of composite materials with ferromagnetic inclusions in a non-magnetic matrix are described. These methods are applied to the experimental data obtained in Gorkunov et al. [Russ. J. Nondestruct. Test. 3 (2001) 186]. A qualitative agreement is obtained for the concentration values reported in that paper and a quantitative agreement is achieved at slightly different value of concentration. The conclusions are supported by direct numerical modeling. KW - Material characterization KW - Ferromagnetic composites KW - Magnetostatic properties Y1 - 2004 U6 - https://doi.org/10.1016/j.ndteint.2003.08.001 VL - 37 IS - 1 SP - 35 EP - 40 PB - Elsevier ER - TY - JOUR A1 - Filippov, O. A1 - Ringhofer, K. H. A1 - Shamonin (Chamonine), Mikhail A1 - Shamonina, Ekaterina A1 - Kamshilin, A. A. A1 - Nippolainen, E. A1 - Sturman, B. I. T1 - Polarization properties of light-induced scattering in Bi12TiO20 crystals: theory and experiment for diagonal geometry JF - Journal of the Optical Society of America B N2 - Illumination of ac-biased photorefractive Bi12TiO20 crystals with a coherent light beam results in the development of strong nonlinear scattering. Theoretically and experimentally we investigate the angular and polarization characteristics of the scattered light for the diagonal ([1̲1̲1]) optical configuration and different polarization states of the pump. A satisfactory understanding of the observed scattering properties is achieved for most of the cases investigated. Y1 - 2003 U6 - https://doi.org/10.1364/JOSAB.20.000677 VL - 20 IS - 4 SP - 677 EP - 684 PB - Optica Publishing Group ER - TY - JOUR A1 - Lukyanets, S. A1 - Snarskii, Andrei A. A1 - Shamonin (Chamonine), Mikhail A1 - Bakaev, V. V. T1 - Calculation of magnetic leakage field from a surface defect in a linear ferromagnetic material: an analytical approach JF - NDT & E International N2 - A novel analytical approach for calculating the magnetic leakage field from surface defects is proposed and demonstrated for the case of a linear ferromagnetic material. The novelty of the theory is that it relates the distribution of induced magnetic charges to the surface shape. An excellent agreement between the analytical and numerical results is shown. The functional relations between different magnetic field components are discussed. KW - Magnetic methods KW - Flux leakage KW - Mathematical model KW - Defects Y1 - 2003 U6 - https://doi.org/10.1016/S0963-8695(02)00071-3 VL - 36 IS - 1 SP - 51 EP - 55 PB - Elsevier ER - TY - JOUR A1 - Snarskii, Andrei A. A1 - Shamonin (Chamonine), Mikhail A1 - Zhenirovskyy, M. I. T1 - Effective properties of macroscopically non-uniform ferromagnetic composite materials BT - Theory and numerical experiment JF - Zhurnal Eksperimental'noj i Teoreticheskoj Fiziki - Journal of Experimental and Theoretical Physics (JETP) Y1 - 2003 VL - 123 IS - 1 SP - 79 EP - 92 PB - Akademija Nauk SSSR CY - Moscow ER - TY - CHAP A1 - Haug, Sonja T1 - Die Migrations- und Integrationsstatistik BT - Aktuelle Befunde und Defizite T2 - Forschungsseminar des Lehrstuhls für Soziologie und empirische Sozialforschung, 04.11.2008, Universität Nürnberg Y1 - 2008 ER - TY - JOUR A1 - Drüeke, Ricarda A1 - Haug, Sonja A1 - Keller, Wolfgang A1 - Weber, Karsten T1 - Vertrauen ist gut, Kontrolle ist besser? BT - Privatsphäre und die Nutzung digitaler mobiler Endgeräte in interpersonalen Beziehungen JF - Merz Medien + Erziehung, Zeitschrift für Medienpädagogik N2 - Mobiltelefone zeigen weitreichende Auswirkungen auf interpersonale Beziehungen. Die prekäre Balance zwischen Vertrauen als wichtige Basis interpersonaler Beziehungen und Kontrolle als notwendige Be-dingung von Gemeinschaft sowie Privatsphäre als (sozialer) Raum, in dem soziale Kontrolle temporär suspendiert ist, wird durch moderne Informations-und Kommunikationstechnologien gefährdet. Theoreti-sche Konzepte und empirische Studien werden im Beitrag genutzt, um ein besserers Verständnis der Auswirkungen zu ermöglichen. Y1 - 2007 VL - 51 IS - 6 SP - 25 EP - 36 ER - TY - JOUR A1 - Weber, Karsten A1 - Haug, Sonja T1 - Deins? Meins? Unsers? Wie gehen Internetnutzer mit dem Eigentum anderer um? BT - Wie gehen Internetnutzer mit dem Eigentum anderer um? JF - ETHICA Y1 - 2002 UR - https://www.imagomundi.biz/wp-content/uploads/2018/11/ETHICA_10_Jahrgang_2002_Heft_1.pdf VL - 10 IS - 1 SP - 77 EP - 83 ER - TY - JOUR A1 - Weber, Karsten A1 - Haug, Sonja T1 - Konfrontation oder Kompromiss? BT - Empirische Befunde und ethische Überlegungen zu Urheberrechtskonflikten JF - Ethica Y1 - 2003 UR - https://www.imagomundi.biz/wp-content/uploads/2019/01/ETHICA_11_Jahrgang_2003_Heft_2.pdf VL - 11 IS - 2 SP - 163 EP - 186 ER - TY - CHAP A1 - Weber, Karsten A1 - Haug, Sonja ED - Joerden, Jan C. ED - Neumann, J.N. T1 - Demographische Entwicklung, Rationierung und (intergenerationelle) Gerechtigkeit – ein Problembündel der Gesundheitsversorgung T2 - Medizinethik Bd. 5 Y1 - 2005 UR - https://www.researchgate.net/publication/263818606_Demographische_Entwicklung_Rationierung_und_intergenerationelle_Gerechtigkeit_-_ein_Problembundel_der_Gesundheitsversorgung SP - 70 PB - Peter Lang CY - Frankfurt am Main ER - TY - JOUR A1 - Lauer, Norina T1 - Logopädische Therapie bei Kindern mit zentral-auditiven Wahrnehmungsstörungen JF - Forum Logopädie Y1 - 1996 VL - 10 IS - 3 SP - 13 EP - 17 ER - TY - GEN A1 - Kempf, Sabrina A1 - Bieber, Claudia A1 - Corsten, Sabine A1 - Lutz-Kopp, Matthias A1 - Heim, Stefan A1 - Lauer, Norina T1 - Mitbetroffen von Aphasie: Die subjektiv empfundene Lebensqualität der Angehörigen von Menschen mit Aphasie BT - Poster T2 - Jahrestagung des Deutschen Bundesverbands für Logopädie, Mainz Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-8661 SP - 49 ER - TY - GEN A1 - Kempf, Sabrina A1 - Bieber, Claudia A1 - Corsten, Sabine A1 - Lutz-Kopp, Matthias A1 - Heim, Stefan A1 - Lauer, Norina T1 - Mitbetroffen von Aphasie: Die subjektiv empfundene Lebensqualität der Angehörigen von Menschen mit Aphasie BT - Poster T2 - Jahrestagung der Gesellschaft für Aphasieforschung und -behandlung (GAB), Tagungsband N2 - Als Systemerkrankung beeinflusst die neurologische Sprachstörung Aphasie nicht nur die Betroffenen sondern in vergleichbarem Maße auch die Angehörigen. Es zeigt sich, dass die Lebensqualität der Angehörigen beeinträchtigt ist. Ziel der qualitativen Studie ist es, die subjektive Perspektive der Angehörigen auf die eigene Situation näher zu betrachten. Y1 - 2016 U6 - https://doi.org/10.13140/RG.2.2.20665.77922 SP - 62 EP - 63 CY - Osnabrück ER - TY - RPRT A1 - Voigt-Radloff, Sebastian A1 - Ayerle, Gertrud M. A1 - Braun, Cordula A1 - Höhl, Werner A1 - Lauer, Norina A1 - Lautenschläger, Sindy A1 - Marotzki, Ulrike A1 - Mattern, Elke A1 - Müller, Christian T1 - Leitfaden zum Aufbau Praxisbasierter Forschungsnetzwerke (PBFN) in den Gesundheitsfachberufen Y1 - 2016 UR - www.cochrane.de/de/pbfn-leitfaden ER - TY - JOUR A1 - Corsten, Sabine A1 - Lauer, Norina A1 - Schimpf, Erika J. T1 - Verbesserung sozialer Teilhabe von Menschen mit Aphasie: Chancen von Gruppenarbeit BT - Analyse eines Gruppengesprächs zur Sichtweise der Betroffenen JF - Forum Logopädie N2 - Menschen mit Aphasie erfahren massive Einbußen in ihrer sozialen Teilhabe. Biographisch-narrative Arbeit sowie handlungsorientierte Gruppenangebote bewirken hier Verbesse-rungen. Zur Verstetigung derartiger Ansätze könnten Teile davon in die Selbsthilfearbeit einfließen. In einer empirischen Untersuchung mittels Fokusgruppen mit ehemaligen TeilnehmerInnen des Projekts narraktiv zu biographischer Arbeit bei Aphasie wurde dem Verständnis von Selbsthilfe, den Erwar-tungen hierzu und Möglichkeiten der Organisation nachgegangen. Dabei wurde die Selbsthilfe als unterstützend für soziale Inklusion gesehen. Trotz einer offenen Haltung gegenüber einer verstärkten Übernahme organisatorischer Aufgaben wurden ein mangelndes Selbstvertrauen und verminderte Kompetenzen problematisiert. Eine passgenaue Schulung inklusive Begleitung, (mit)entwickelt und durchgeführt durch SprachtherapeutInnen, könnte ein Lösungsansatz sein. T2 - Improvement of social participation of people with aphasia: Chances of group work Y1 - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-8854 SN - 0932-0547 VL - 28 IS - 6 SP - 28 EP - 34 PB - Schulz-Kirchner-Verlag CY - Idstein ER - TY - GEN A1 - Borgelt, Tim A1 - Hammer, Sabine A1 - Lauer, Norina T1 - Ressourcen bei der Implementierung evidenzbasierter Praxis in den logopädischen Berufsalltag – Eine qualitative Studie T2 - 43. Jahrestagung des Deutschen Bundesverbands für Logopädie vom 19. bis 21. Juni 2014 in Berlin Y1 - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-8878 UR - https://www.dbl-ev.de/fileadmin/Inhalte/Fobis/kongress/2014/Borgelt_Tim_et_al_EBP_im_Berufsalltag.pdf SP - 26 CY - Berlin ER - TY - GEN A1 - Hofmann, Jessica A1 - Lauer, Norina A1 - Grewe, Tanja T1 - LogoApp "Galgenmännchen" - Konzept zur Entwicklung einer sprachtherapeutisch fundierten App für Menschen mit Aphasie BT - Poster T2 - Jahrestagung der Gesellschaft für Aphasieforschung und -behandlung (GAB), Innsbruck, Tagungsband Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-8787 SP - 75 EP - 77 ER - TY - JOUR A1 - Kempf, Sabrina A1 - Lauer, Norina A1 - Corsten, Sabine A1 - Voigt-Radloff, Sebastian T1 - Potentialanalyse zu logopädischem Kommunikationstraining bei Aphasie nach Schlaganfall JF - Zeitschrift für Evidenz, Fortbildung und Qualität im Gesundheitswesen N2 - Gesundheitsproblem Derzeit leiden in Deutschland ca. 100.000 Menschen an einer Aphasie. Diese Sprachstörung kann nach neurologischen Ereignissen wie Schlaganfall oder Schädelhirntrauma eintreten und führt bei den Betroffenen zu erheblichen Einbußen der Lebensqualität und sozialen Partizipation. Damit können Berufsunfähigkeit sowie soziale Isolation einhergehen. Für Betroffene ist der Erhalt und Rückgewinn der Autonomie sowohl beruflich als auch in der Familie und im Freundeskreis von essentieller Bedeutung. Autonomieverlust wird laut Studien als einschneidender erlebt als sprachliche Beeinträchtigungen. Betroffene wünschen sich eine Reduzierung dieser mit Aphasie assoziierten Einschränkungen. Eine Heilung der Störung ist in der chronischen Phase nicht möglich, sodass sich sprachtherapeutische Interventionen auf die Kompensation und einen besseren Umgang mit der Störung fokussieren müssen. Evidenzlage Ein Cochrane-Review aus dem Jahr 2012 (Brady et al., 2012) belegt auf Basis von acht randomisierten Vergleichen mit 347 Teilnehmenden, dass Logopädie verglichen mit keiner Therapie positive Wirkung auf die funktionale Kommunikation von Klienten mit Aphasie hat (0,30 SMD; 95%-KI [0,08 bis 0,52]). Es konnte nicht gezeigt werden, ob eine spezifische Art des Trainings bessere Effekte erzielt. Die Endpunkte Lebensqualität und soziale Teilhabe wurden dabei nicht untersucht. Neuere Studien fanden erste Anhaltspunkte dafür, dass diese klientenzentrierten Endpunkte durch logopädisches Training der Kommunikation und Selbstbehauptung im Gruppensetting unter Einbezug der Kommunikationspartner positiv beeinflusst werden können. Forschungsempfehlung Ein logopädisches Kommunikationstraining im Gruppensetting sollte manualisiert und auf Praktikabilität und Akzeptanz bei Menschen mit Aphasie und ihren Kommunikationspartnern getestet werden. Ebenso sollten in dieser Machbarkeitsstudie adäquate Erhebungsinstrumente für Lebensqualität und soziale Teilhabe pilotgetestet werden. Damit kann eine größere Wirksamkeitsstudie vorbereitet werden, die im Rahmen eines Comparative Effectiveness Research Projektes den bisherigen logopädischen Versorgungsstandard mit dem Zusatzangebot des neuen Kommunikationstrainings hinsichtlich der Effekte auf Lebensqualität und soziale Teilhabe vergleicht. KW - Potenzialanalyse KW - Aphasie KW - Lebensqualität KW - Partizipation KW - Logopädie KW - Sprachtherapie Y1 - 2014 U6 - https://doi.org/10.1016/j.zefq.2014.08.002 VL - Volume 108 IS - Supplement 1 SP - 45 EP - 52 ER - TY - JOUR A1 - Cholewa, Jürgen A1 - Corsten, Sabine A1 - Daniel, Susanne A1 - Grewe, Tanja A1 - Günther, Thomas A1 - Lauer, Norina A1 - Mantey, Stefanie A1 - Nobis-Bosch, R. T1 - Überprüfung von EBP-Kompetenzen bei Studierenden JF - Forum Logopädie N2 - In order to come to evidence-based clinical decisions speech language therapists need to draw on specific knowledge, skills and professional attitudes. The TÜBEP-ST 1.0 introduced here is an assessment tool focussing on the evaluation of basic competencies in evidence-based decision making for german speech language therapy students. The test allows to determine students‘ level of proficiancy concerning fundamen- tal concepts, definitions and practical skills in evidence-based practice. The TÜBEP-ST is derived from the „FRESNO-Test of Competence in Evidence-Based Practice”, a well-established, validated measurement for the basic steps of evidence-based medicine. Y1 - 2015 UR - https://www.researchgate.net/publication/304099985_Uberprufung_von_EBP-Kompetenzen_bei_Studierenden VL - 29 IS - 6 SP - 20 EP - 27 ER - TY - RPRT A1 - Voigt-Radloff, Sebastian A1 - Stemmer, Renate A1 - Korporal, Johannes A1 - Horbach, Annegret A1 - Ayerle, Gertrud M. A1 - Schäfers, Rainhild A1 - Greening, Monika A1 - Binnig, Marlis A1 - Mattern, Elke A1 - Heldmann, Patrick A1 - Wasner, Mieke A1 - Braun, Cordula A1 - Lohkamp, Monika A1 - Marotzki, Ulrike A1 - Kraus, Elke A1 - Oltman, Renée A1 - Müller, Christian A1 - Corsten, Sabine A1 - Lauer, Norina A1 - Schade, Veronika A1 - Kempf, Sabrina T1 - Forschung zu komplexen Interventionen in der Pflege- und Hebammenwissenschaft und in den Wissenschaften der Physiotherapie, Ergotherapie und Logopädie BT - ein forschungsmethodischer Leitfaden zur Ermittlung, Evaluation und Implementation evidenzbasierter Innovationen, Version 2.0 Y1 - 2016 U6 - https://doi.org/10.6094/UNIFR/10702 ER - TY - GEN A1 - Bieber, Claudia A1 - Kempf, Sabrina A1 - Lauer, Norina A1 - Lutz-Kopp, Matthias A1 - Corsten, Sabine T1 - Kommunikation in Aphasie-Selbsthilfegruppen aus Sicht einer betroffenen Teilnehmerin BT - Poster T2 - Jahrestagung der Gesellschaft für Aphasieforschung und -behandlung (GAB), Tagungsband Y1 - 2016 SP - 53 EP - 55 CY - Osnabrück ER - TY - GEN A1 - Lauer, Norina A1 - Corsten, Sabine T1 - Supporting peer-led aphasia support groups with a specific training program: a first proof of concept BT - Poster T2 - International Aphasia Rehabilitation Conference, London Y1 - 2016 ER - TY - RPRT A1 - Voigt-Radloff, Sebastian A1 - Stemmer, Renate A1 - Behrens, Johann A1 - Horbach, Annegret A1 - Ayerle, Gertrud M. A1 - Schäfers, Rainhild A1 - Mattern, Elke A1 - Heldmann, Patrick A1 - Braun, Cordula A1 - Marotzki, Ulrike A1 - Kraus, Elke A1 - George, Sabine A1 - Müller, Christian A1 - Corsten, Sabine A1 - Lauer, Norina A1 - Schade, Veronika A1 - Kempf, Sabrina A1 - Binnig, Marlis A1 - Wasner, Mieke T1 - Forschung zu komplexen Interventionen in der Pflege- und Hebammenwissenschaft und in den Wissenschaften der Physiotherapie, Ergotherapie und Logopädie BT - ein forschungsmethodischer Leitfaden zur Ermittlung, Evaluation und Implementation evidenzbasierter Innovationen, Version 1 N2 - Dieser forschungsmethodische Leitfaden behandelt folgende Themen: (1) Wissenschaftlicher Transfer von komplexen Interventionen inkl. Fragestellungen und Methoden von Machbarkeits-, Wirksamkeits- und Implementationsstudien. (2) Recherchestrategien zur Krankheitslast inkl. Folgen für Betroffene und Gesellschaft und Versorgungsstatus durch Gesundheitsfachberufe. (3) Präzisierung von Forschungsfragestellungen. (4) Evidenzrecherche, Evidenzmapping und Beurteilung der Evidenzlage. (5) Fördermöglichkeiten von Forschungsprojekten. (6) Forschungsnetzwerke in den Gesundheitsfachberufen. Y1 - 2013 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-8939 ER - TY - GEN A1 - Junk, Dagmar A1 - Weinreich, Elisabeth A1 - Lauer, Norina T1 - Die Einsetzbarkeit der artikulatorischen Diadochokinese als Diagnostikinstrument für Dysarthrien BT - Eine Vergleichsstudie zur Erfassung diadochokinetischer Daten unter Anwendung des Software-Moduls „MSDA“ T2 - 42. dbl-Kongress, 30. Mai - 1. Juni 2013, Erfurt Y1 - 2013 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-8953 SP - 9 CY - Erfurt ER - TY - GEN A1 - Lauer, Norina T1 - Projektstudie zur Implementierung einer Patientendokumentation für Schlaganfallpatienten mit Aphasie. T2 - Poster auf der Tagung der Gesellschaft für Aphasieforschung und -behandlung (GAB) in Münster Y1 - 2010 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-9122 ER - TY - GEN A1 - Grötzbach, Holger A1 - Lauer, Norina T1 - ICF-basierte Therapieziele erstellen: Beispiele für den Bereich Aphasie T2 - 42. dbl-Kongress, 30. Mai - 1. Juni 2013, Erfurt Y1 - 2013 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-8968 SP - 9 CY - Erfurt ER - TY - GEN A1 - Corsten, Sabine A1 - Kempf, Sabrina A1 - Lutz-Kopp, Matthias A1 - Berger-Tunkel, Merle A1 - Lauer, Norina T1 - Eigenverantwortliche Selbsthilfegruppenarbeit bei Aphasie – erste Erfahrungen BT - Poster T2 - Jahrestagung der Gesellschaft für Aphasieforschung und -behandlung (GAB) Y1 - 2017 SP - 70 EP - 71 ER - TY - CHAP A1 - Lauer, Norina ED - Korntheuer, Petra ED - Gumpert, Maike ED - Vogt, Susanne T1 - Zusatzmodul: Sprachtherapeutische Anamnese bei Laryngektomie T2 - Anamnese in der Sprachtherapie Y1 - 2014 SN - 978-3-497-02438-4 SP - 149 EP - 153 PB - Reinhardt CY - München ER - TY - GEN A1 - Lauer, Norina A1 - Grötzbach, Holger A1 - Abel, S. T1 - ICF-basierte Therapieziele erstellen: Beispiele für die Aphasie Y1 - 2013 PB - Bundesverband für die Rehabilitation der Aphasiker e.V. CY - Würzburg ER - TY - JOUR A1 - Lauer, Norina T1 - Evidenzbasierte Betrachtung auditiver Verarbeitungsstörungen. Ein Überblick über AVS und die aktuelle Evidenzlage JF - Forum Logopädie T2 - Evidence based view of auditory processing disorders Y1 - 2014 VL - 28 IS - 1 SP - 6 EP - 14 ER - TY - JOUR A1 - Lauer, Norina T1 - Gestern Arbeit – heute Beruf – morgen Profession? JF - Forum Logopädie T2 - Yesterday work - today occupation - tomorrow profession? Y1 - 2014 VL - 28 IS - 3 SP - 6 EP - 8 ER - TY - CHAP A1 - Bieber, Claudia A1 - Spelsberg, Stefanie A1 - Lauer, Norina T1 - Reduzierung intersilbischer Pausen mittels vereinfachten Zeitlupensprechens unter Einbeziehung von Praat als Feedback-Instrument bei mittelschwerer, chronischer Sprechapraxie T2 - 11. Jahrestagung der Gesellschaft für Aphasieforschung und -behandlung, Tagungsband Y1 - 2011 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-9063 SP - 43 EP - 45 CY - Konstanz ER - TY - JOUR A1 - Lauer, Norina T1 - Die Teilhabe des Betroffenen an der Aphasierehabilitation am Beispiel der Aphasie-Therapiechronik JF - Aphasie und verwandte Gebiete N2 - In einer internationalen Befragung von Aphasie-Selbsthilfeorganisationen (ASHO) gaben 26 Organisationen Auskunft über deren Größe, Aufbau, Personal, Finanzierung, Leistungsangebote und Kooperationen mit dem professionellen System (Lauer 2010). Es zeigt sich, dass die Anzahl der Mitglieder und die Finanzierungsmöglichkeiten deutlich variieren. Am häufigsten finanzieren sich die ASHO über Spenden, öffentliche Gelder und Mitgliederbeiträge. Die meisten ASHO sehen die Beratung von Betroffenen und Angehörigen sowie die Öffentlichkeitsarbeit zur Erhöhung des Bekanntheitsgrads der Aphasie und ihrer Folgen in der Bevölkerung als ihre Hauptanliegen. In vielen Fällen kooperieren die ASHO mit professionellen Helfern verschiedener Rehabilitationsstadien und halten diese Kooperation für einen wichtigen Bestandteil ihrer Tätigkeit. Der Artikel gibt eine Übersicht zu den Ergebnissen der Befragung und vergleicht diese abschließend mit der Situation der Aphasie-Selbsthilfe in Deutschland. Y1 - 2011 UR - http://www.aphasie.org/de/3-fachpersonen/3.1-fachzeitschriften/archiv-bis-2013/2-2011-vol-29_komplett.pdf VL - 29 IS - 2 SP - 5 EP - 24 ER - TY - JOUR A1 - Lauer, Norina T1 - Die internationale Situation der Aphasie-Selbsthilfe JF - Aphasie und verwandte Gebiete N2 - In einer internationalen Befragung von Aphasie-Selbsthilfeorganisationen (ASHO) gaben 26 Organisationen Auskunft über deren Größe, Aufbau, Personal, Finanzierung, Leistungsangebote und Kooperationen mit dem professionellen System (Lauer 2010). Es zeigt sich, dass die Anzahl der Mitglieder und die Finanzierungsmöglichkeiten deutlich variieren. Am häufigsten finanzieren sich die ASHO über Spenden, öffentliche Gelder und Mitgliederbeiträge. Die meisten ASHO sehen die Beratung von Betroffenen und Angehörigen sowie die Öffentlichkeitsarbeit zur Erhöhung des Bekanntheitsgrads der Aphasie und ihrer Folgen in der Bevölkerung als ihre Hauptanliegen. In vielen Fällen kooperieren die ASHO mit professionellen Helfern verschiedener Rehabilitations-stadien und halten diese Kooperation für einen wichtigen Bestandteil ihrer Tätigkeit. Der Artikel gibt eine Übersicht zu den Ergebnissen der Befragung und vergleicht diese abschließend mit der Situation der Aphasie-Selbsthilfe in Deutschland Y1 - 2011 UR - http://www.aphasie.org/de/3-fachpersonen/3.1-fachzeitschriften/archiv-bis-2013/2-2011-vol-29_komplett.pdf VL - 29 IS - 2 SP - 25 EP - 35 ER - TY - JOUR A1 - Lauer, Norina T1 - Mundmotorische Aufgaben in der Behandlung neurogener Sprechstörungen JF - Forum Logopädie N2 - n diesem Artikel wird der Stellenwert mundmotorischer Übungen in der Therapie neurogener Sprechstörungen diskutiert. Dazu werden die sensomotorische Entwicklung, das muskuläre Aufwärmen, das Krafttraining, das Training von Teilaspekten und die Aufgabenspezifität näher betrachtet. Die aktuelle Studienlage zur Evidenz mundmotorischer Aufgaben, aber auch der Artikulationstherapie wird dargestellt. Die Ausführungen sollen Sprachtherapeuten dazu anregen, den Einsatz oralmotorischer Aufgaben in der Sprechtherapie kritisch zu überdenken und sie ermutigen, die Behandlung neurogener Sprechstörungen artikulationsorientiert auszurichten. T2 - The relevance of nonspeech oral motor exercises in the treatment of neurological speech disorders Y1 - 2013 VL - 27 IS - 2 SP - 6 EP - 11 ER - TY - JOUR A1 - Lauer, Norina A1 - Danz, Ursula T1 - Eine Möglichkeit zur modellorientierten Behandlung der Tiefendyslexie – ein Fallbeispiel JF - Forum Logopädie Y1 - 2001 UR - https://docplayer.org/37577846-Modellorientierte-behandlung-der-tiefendyslexie-ein-fallbeispiel.html VL - 15 IS - 1 SP - 7 EP - 13 ER - TY - CHAP A1 - Lauer, Norina ED - Schrey-Dern, L. ED - Rausch, M. T1 - Publizieren und Präsentieren – Wegbereiterin Luise Springer T2 - Logopädie als Diskurs. Dankschrift für Luise Springer. Herausgegeben anlässlich der Verleihung der Ehrenmitgliedschaft des Deutschen Bundesverbandes für Logopädie e.V. (dbl) am 24. Juni 2011 Y1 - 2011 ER - TY - CHAP A1 - Lauer, Norina ED - Rausch, M. ED - Sandrieser, P. T1 - Die Kooperation von Betroffenen und Therapeuten in der Aphasie-Selbsthilfe T2 - Faszination Sprache - Dankschrift anlässlich der Abschiedsvorlesung von Prof. Dr. Walter Huber Y1 - 2011 ER - TY - CHAP A1 - Galibarov, Pavel E. A1 - Al-Munajjed, Amir Andreas A1 - Dendorfer, Sebastian A1 - Christensen, Soeren Toerholm A1 - Rasmussen, John T1 - The effect of varying the stiffness of spinal fusion devices on the adjacent levels using multibody dynamics simulation T2 - Orthopaedic Proceedings N2 - INTRODUCTION Several clinical studies demonstrated long-term adjacent-level effects after implantation of spinal fusion devices[1]. These effects have been reported as adjacent joint degeneration and the development of new symptoms correlating with adjacent segment degeneration[2] and the trend has therefore gone to motion preservation devices; however, these effects have not been understood very well and have not been investigated thoroughly[3]. The aim of this study is to investigate the effect of varying the stiffness of spinal fusion devices on the adjacent vertebral levels. Disc forces, moments and facet joint forces were analyzed. METHODS The AnyBody Modeling System was used to compute the in-vivo muscle and joint reaction forces of a musculoskeletal model. The full body model used in this study consists of 188 muscle fascicles in the lumbar spine and more than 1000 individual muscle branches in total. The model has been proposed by de Zee et al.[3], validated by Rasmussen et al.[4] and by Galibarov et al.[5]. The new model[5] determines the individual motions between vertebrae based on the equilibrium between forces acting on the vertebrae from muscles and joints and the passive stiffness in disks and ligaments, figure 1a. An adult of 1.75 m and 75 kg with a spinal implant in L4L5 was modeled. This model was subjected to a flexion-extension motion using different elastic moduli to analyze and compare to a non-implanted scenario. The analyzed variables were vertebral motion, the disc reaction forces and moments, as well as facet joint forces in the treated and the adjacent levels: L2L3, L3L4, L4L5 and L5-Sacrum. RESULTS When introducing a spinal fusion device in the L4L5 joint the reaction forces and moments decreased in this joint with stiffer devices leading to lower joint loads. However, in the adjacent joints, L3L4 and L5Sacrum, an increase was observed when implanting stiffer devices. Similar trends could be found for the L2L3 joint. The loads in the facet joints showed the same trends. While introducing a spinal fusion device reduced the facet joint forces in the treated joint, the loads in the adjacent facet joints were increased according to the stiffness of the implanted device, figure 1b. DISCUSSION While the treated disc joint showed reduced motion and loads, the adjacent levels demonstrated a significant increase. In particular, the increased facet joint forces in the adjacent levels can lead to adjacent level facet pain or accelerated facet joint degeneration. Introducing a device resulted in preventing facet contact and therefore facet joint loads, even using the device with the lowest stiffness. CONCLUSION The presented model shows that clinical complications such as facet joint degeneration in adjacent levels after implantation of spinal fusion device are consistent with the change in the mechanical-stimulus distribution in the system. Y1 - 2011 VL - 94-B IS - SUPP_XL01 Sep 2012 SP - 2 ER - TY - CHAP A1 - Galibarov, Pavel E. A1 - Dendorfer, Sebastian A1 - Christensen, Soeren Toerholm T1 - On modelling spine curvature dependent on muscular and external forces in multibody dynamics system T2 - International Society of Biomechanics (ISB), 13th congress, 2011, Brussels, Belgium N2 - This paper presents a computational approach for investigating effect of muscular and external forces on curvature of the lumbar spine. Multibody dynamics system is used to compute the lumbar spine curvature using a force-dependent kinematics facility, e.g. this method allows releasing some degrees of freedom in order to be computed based on the current load configuration. Y1 - 2011 UR - https://paperpile.com/shared/63VCBY/download/2608c6d1-adef-0330-86f8-7996e623c627 SP - 2 ER - TY - CHAP A1 - Rasmussen, John A1 - Bichler, R. A1 - Christensen, Soeren Toerholm A1 - Wirix-Speetjens, Roel A1 - Dendorfer, Sebastian A1 - Renkawitz, Tobias T1 - Subject-specific Musculoskeletal Simulation of Hip Dislocation Risk in Activities of Daily Living T2 - Proceedings of the 2011 ORS Annual Meeting, Long Beach, CA. Y1 - 2011 UR - http://www.ors.org/Transactions/57/0306.pdf IS - Paper No. 306 ER - TY - CHAP A1 - Robie, Bruce A1 - Dendorfer, Sebastian A1 - Rasmussen, John A1 - Christensen, Soeren Toerholm T1 - Axial Rotation Requires Greatest Load in Multifidus Muscle – Potential Association with Low Back Pain? T2 - Annual Meeting of the AANS/CNS Section on Disorders of the Spine and Peripheral Nerves, 2011, Phoenix, Arizona Y1 - 2011 UR - https://paperpile.com/shared/o0LQEG ER - TY - CHAP A1 - Goedeke, Arne A1 - Schulz, Carsten A1 - Gruss, H. A1 - Kieß, B. T1 - Structural Health Monitoring auf Basis sich verändernder Strukturdehnungen an Brückenträgern T2 - Der Kran - Leistungssteigerung, Leichtbau und Automatisierung : 27. Internationale Kranfachtagung 2019 : Begleitband zur Kranfachtagung am 07. März 2019 in Bochum Y1 - 2019 SN - 3-89194-226-5 PB - Selbstverlag der Ruhr-Universität Bochum ER - TY - CHAP A1 - Galibarov, Pavel E. A1 - Dendorfer, Sebastian A1 - Rasmussen, John T1 - Two Computational Models of the Lumbar Spine: BT - Comparison and Validation T2 - Proceedings of the 2011 ORS Annual Meeting, Long Beach, CA, vol. Marie Curie Initial Training Network "SpineFX" Y1 - 2011 UR - http://www.ors.org/Transactions/57/0786.pdf ER - TY - CHAP A1 - Schlecht, Berthold A1 - Schulz, Carsten T1 - Ganzheitliche Simulation von Schaufelradantrieben unter Berücksichtigung der umgebenden Struktur T2 - SIMPEP, Kongress für Simulation im Produktentstehungsprozess : 29. und 30. September 2011 in Würzburg/Veitshöchheim Y1 - 2011 SP - 207 EP - 232 PB - FVA, Forschungsvereinigung Antriebstechnik CY - Frankfurt ER - TY - GEN A1 - Goedeke, Arne A1 - Schulz, Carsten A1 - Gruss, H. A1 - Gläser, T. T1 - Optimierung des Predictive Maintenance im Kranbau T2 - Nachwuchswissenschaftlerkonferenz - NWK, 19, 2018, Köthen Y1 - 2018 ER - TY - JOUR A1 - Knödler, Christoph T1 - Zur Vermeidung von formalen Fehlern in Klausuren JF - Juristische Schulung - JuS Y1 - 1996 IS - 10 SP - L73 EP - L75 PB - C.H. Beck CY - München ER - TY - JOUR A1 - Knödler, Christoph T1 - Hände weg vom Handy! JF - brandwacht - Zeitschrift für Brand- und Katastrophenschutz Y1 - 2001 IS - 2 SP - 53 EP - 54 PB - Kastner CY - Wolnzach ER - TY - JOUR A1 - Finckh, Wolfgang A1 - Ignatiadis, Anett A1 - Niedermeier, Roland A1 - Wiens, Udo A1 - Zilch, Konrad T1 - Die neue DAfStb-Richtlinie "Verstärken von Betonbauteilen mit geklebter Bewehrung" [The new DAfStb-Guideline "Strengthening of concrete structures with adhesive bonded reinforcement"] JF - Beton- und Stahlbetonbau N2 - Die Verstärkung von Betonbauteilen mit geklebter Bewehrung wurde in Deutschland bisher alleinig durch allgemeine bauaufsichtliche Zulassungen und Zustimmungen im Einzelfall geregelt. Da sich das Verstärken von Betonbauteilen mit geklebter Bewehrung immer mehr zur Regelbauweise entwickelt und die europäische Harmonisierung auf diesem Gebiet voranschreitet, wurde ein neues Regelwerk für die Verstärkung von Betonbauteilen mit geklebter Bewehrung geschaffen. Dazu haben sich alle von der Themenstellung betroffenen Parteien in einem Unterausschuss des Deutschen Ausschusses für Stahlbeton zusammengefunden und sich in die Formulierung der DAfStb-Richtlinie .Verstärken von Betonbauteilen mit geklebter Bewehrung. eingebracht. Nach Abschluss des Einspruchsverfahrens und anschließender Notifizierung erscheint die Richtlinie voraussichtlich im September oder Oktober 2012. KW - Anwendungsgebiet KW - Bemessung KW - Betonbauteil KW - CFK-Lamelle KW - DAfStb-Richtlinie KW - Klebebewehrung KW - Konstruktion KW - Kraftübertragung KW - Lamellenverstärkung KW - Richtlinie KW - Stütze KW - Umschnürungsbewehrung KW - Verbundspannung KW - Verstärkung Y1 - 2012 U6 - https://doi.org/10.1002/best.201200047 VL - 107 IS - 10 SP - 711 EP - 715 ER - TY - JOUR A1 - Weber, Karsten T1 - Die ethischen Leitlinien der Gesellschaft für Informatik e.V. werden überarbeitet – Ein Arbeitsbericht JF - Ethica Y1 - 2003 UR - https://www.researchgate.net/publication/263818621_Die_ethischen_Leitlinien_der_Gesellschaft_fur_Informatik_eV_werden_uberarbeitet_-_Ein_Arbeitsbericht VL - 11 IS - 1 ER - TY - BOOK A1 - Mauerer, Wolfgang T1 - Linux-Kernelarchitektur : Konzepte Strukturen und Algorithmen von Kernel 2.6 KW - Kernel KW - LINUX 2.6 Y1 - 2004 SN - 9783446225664 PB - Hanser CY - München ER - TY - RPRT A1 - Krewer, Carmen A1 - Schäpers, Barbara A1 - Andersen, Henning Boje A1 - Linner, Thomas A1 - Steinböck, Martina A1 - Hu, Rongbo A1 - Zhao, Charlie A1 - Güttler, Jörg A1 - Schlandt, Marcel A1 - Valk, Carlijn A1 - Lu, Yuan. A1 - Kulev, Igor A1 - Salehzadeh Niksirat, Kavous A1 - Larsen, Rasmus Tostrup A1 - Schrader, Lisa A1 - Partyga, P. A1 - Kraul, M. A1 - Kozak, Dominika A1 - Schwarze, A.-K. A1 - Rusu, Alexandru A1 - Murali, S. A1 - Ricon, F. A1 - Lingegård, H. A1 - v. Zanten, B. A1 - Lovei, Peter A1 - Visser, Thomas A1 - Seelinger, A. A1 - van den Boom, Camilla A1 - Steenbakkers, J. A1 - Henriksen, L. A1 - Randrinambelonoro, M. A1 - Perrine, C. T1 - Formalized results of final testing and optimization activities: Summarization of testing and evaluation of final testing of continuously improved system in the form of prototypes in real world environments and presentation of optimization measures. BT - Deliverable submitted as part of the EU H2020 research project REACH (Responsive Engagement of the Elderly promoting Activity and Customized Healthcare), Grant Agreement No. 690425 N2 - Deliverable D28: Formalized results of final testing and optimization activities: Summarization of testing and evaluation of final testing of continuously improved system in the form of prototypes in real world environments and presentation of optimization measures (associated with tasks T6.5, T6.6, T6.7, T6.8). D28 is an update on D27. Additional associated deliverables are D12, D13, D23, D31, and D44. Abstract: In order to provide a comprehensive summary of all testing activities, the medical core group (DTU, HUG, SK, TUM) created a mini protocol template (which requested the outline of some methodological aspects of each study such as study designs, the recruitment phase, population under investigation, etc.), and ensured that data were submitted and provided by the trial manager to the core group. In this deliverable we present, structure, and interpret the formalized results of the final testing and optimization activities of all testing activities in REACH. The deliverable includes the summarization of testing and evaluation of final testing of a continuously improved system in the form of prototypes in real world environments and the presentation of optimization measures. The deliverable is an update on deliverable D27 and associated with tasks T6.5, T6.6, T6.7, T6.8. In reaction to the reviewers' comments we initiated additional trials focusing on practice cases. Those trials are specifically ladled and included in the updated overview. A review on factors, i.e., falling, frailty, cognitive decline , sarcopenia, social isolation, and malnutrician, was performed to show the most important cofactors. Addressed in this deliverable is also the role of privacy and the hierarchy of needs which are essential components of the acceptance and use of technology . Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-36195 N1 - REACH2020: Responsive Engagement of the Elderly promoting Activity and Customized Healthcare (Horizon 2020, PHC track) ER - TY - RPRT A1 - Seelinger, A. A1 - Vogt, L. A1 - Linner, Thomas A1 - Güttler, Jörg A1 - Hu, Rongbo A1 - Schlandt, Marcel A1 - Zhao, Charlie A1 - Schäpers, Barbara A1 - Andersen, Henning Boje A1 - Brombacher, A. A1 - Lu, Yuan T1 - Standardization activities BT - Deliverable D38 submitted as part of the EU H2020 research project REACH (Responsive Engagement of the Elderly promoting Activity and Customized Healthcare), Grant Agreement No. 690425 N2 - REACH has the ambition to influence and gain from standardization on national, European, and international level. We aim to create synergies between parallel work on these levels that will finally make a beneficial impact. Systematic parallel and synergeti cwork on these levels allow REACH to create a maximized impact for all involved stakeholders, and in particular, create better health and health care “ecosystems” for potential REACH end users. Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-36227 UR - https://mediatum.ub.tum.de/doc/1545852/863999227343.pdf ER - TY - CHAP A1 - Hussein, Hussein A1 - Meyer-Sickendiek, Burkhard A1 - Baumann, Timo ED - Birkholz, Peter ED - Stone, Simon T1 - How to identify elliptical poems within a digital corpus of auditory poetry T2 - Elektronische Sprachsignalverarbeitung 2019 (ESSV), Tagungsband der 30. Konferenz, Dresden, 3.-8. März 2019 N2 - Ellipses denote the omission of one or more grammatically necessary phrases. In this paper, we will demonstrate how to identify such ellipses as a rhythmical pattern in modern and postmodern free verse poetry by using data from lyrikline which contain the corresponding audio recording of each poem as spoken by the original author. We present a feature engineering approach based on literary analysis as well as a neural networks based approach for the identification of ellipses within the lines of a poem. A contrast class to the ellipsis is defined from poems consisting of complete and correct sentences. The feature-based approach used features derived from a parser such as verb, comma, and sentence ending punctuation. The classifier of neural networks is trained on the line level to integrate the textual information, the spoken recitation, and the pause information between lines, and to integrate information across the lines within the poem. A statistic analysis of poet's gender showed that 65% of all elliptical poems were written by female poets. The best results, calculated by the weighted F-measure, for the classification of ellipsis with the contrast class is 0.94 with the neural networks based approach. The best results for classification of elliptical lines is 0.62 with the feature-based approach. Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:18-228-7-2579 UR - http://www.essv.de/paper.php?id=88 SN - 978-3-959081-57-3 SP - 247 EP - 254 PB - TUDpress CY - Dresden, Germany ER - TY - CHAP A1 - Baumann, Timo A1 - Meyer-Sickendiek, Burkhard A1 - Hussein, Hussein T1 - How to Identify Speech When Translating Unpunctuated Poetry T2 - Proceedings of Elektronische Sprachsignalverarbeitung: Tagungsband der 31. Konferenz, Magdeburg, 4.-6. März 2020 N2 - A large proportion of (post)-modern poetry contains no or hardly any punctuation. In our contribution, we will investigate how well punctuation information can be recovered for postmodern poetry based on the information contained in the text and speech of free verse poems. We use the world's largest corpus of spoken (post-)modern poetry from our partner lyrikline which contains the corresponding audio recording of each poem as spoken by the original author and features translations for many of the poems. We identify lines that contain a phrase break in the middle of the poetic line, which may already be helpful for philological analysis on one hand, and identify the position of the break in the line on the other hand. We select those poetic lines that contain one or more punctuation characters that typically indicate a phrase break in poetry (.,;:!?/) somewhere in the middle (rather than only at the end of the line) as our target class. We train a neural network (bidirectional recurrent neural network (RNN) based on gated recurrent units (GRU) with attention) that combines audio and textual features to identify the punctuation with the goal of applying it to reconstruct them within a corpus of unpunctuated poems. Our results clearly indicate that speech is helpful for recovering the constituency structure of post-modern poetry that is partially obfuscated by missing punctuation. Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:18-228-7-2587 UR - http://www.essv.de/paper.php?id=452 SP - 165 EP - 172 PB - Förderverein Elektronische Sprachsignalverabeitung e.V. CY - Magdeburg, Germany ER - TY - CHAP A1 - Baumann, Timo A1 - Saboo, Ashutosh ED - Ehrmann, Maud T1 - Evaluating Heuristics for Audio-Visual Translation T2 - Proceedings of the Conference of Computational Humanities Research, (CHR2021): November 17-19, 2021, Amsterdam, The Netherlands N2 - Dubbing, i.e., the lip-synchronous translation and revoicing of audio-visual media into a target language from a different source language, is essential for the full-fledged reception of foreign audio-visual media, be it movies, instructional videos or short social media clips. In this paper, we objectify influences on the ‘dubbability’ of translations, i.e., how well a translation would be synchronously revoiceable to the lips on screen. We explore the value of traditional heuristics used in evaluating the qualitative aspects, in particular matching bilabial consonants and the jaw opening while producing vowels, and control for quantity, i.e., that translations are similar to the source in length. We perform an ablation study using an adversarial neural classifier which is trained to differentiate “true” dubbing translations from machine translations. While we are able to confirm the value of matching lip closure in dubbing, we find that the opening angle of the jaw as determined by the realized vowel may be less relevant than frequently considered in audio-visual translation. KW - ablation study KW - audiovisual translation KW - dubbing KW - lip synchrony KW - machine translation Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:18-228-7-2592 UR - http://ceur-ws.org/Vol-2989/short_paper46.pdf SP - 171 EP - 180 PB - CEUR Workshops CY - Amsterdam, the Netherlands ER - TY - JOUR A1 - Galka, Stefan A1 - Rammelmeier, Tobias A1 - Günthner, Willibald A. T1 - Fehlervermeidung in der kommissionierung JF - Logistics Journal N2 - Manuelle Kommissioniersysteme sind aufgrund ihrer Flexibilität weit verbreitet, jedoch treten bei diesen auch vermehrt Kommissionierfehler auf, die weitreichende Folgen haben können. Deshalb werden zu Beginn des Beitrags die Auswirkungen und Ursachen von Kommissionierfehlern betrachtet. Der Fokus des Beitrags liegt auf der Darlegung von Möglichkeiten zur Fehlervermeidung. Dabei wird ein ganzheitlicher Ansatz verfolgt, der Maßnahmen aus den Handlungsfeldern Technik, Prozess, Organisation und Motivation umfasst. Als Ausblick auf zukünftige technische Hilfsmittel zur Fehlervermeidung wird das Augmented-Reality-unterstützte System Pick-by-Vision aus der Forschung vorgestellt, das wesentliche Vorteile existierender Techniken der Informationsbereitstellung vereinigt. T2 - Error prevention in manual order picking KW - Kommissionierfehlervermeidung KW - Kommissionierung KW - Pick-by-Vision KW - augmented reality KW - order picking KW - picking error Y1 - 2012 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0009-14-34494 SN - 2192-9084 N1 - https://www.logistics-journal.de/proceedings/2012/3449 Jedermann darf dieses Werk unter den Bedingungen der freien Digital Peer Publishing Lizenz elektronisch über­mitteln und zum Download bereit­stellen. Der Lizenztext ist im Internet unter der Adresse http://www.dipp.nrw.de/lizenzen/dppl/fdppl/f-DPPL_v1_de_11-2004.html abrufbar. SP - 1 EP - 8 PB - WGTL, Wissenschaftliche Gesellschaft für Technische Logistik e. V. CY - Stuttgart ; Dortmund ER - TY - GEN A1 - Baumann, Timo ED - Devillers, Laurence ED - Kawahara, Tatsuya ED - Moore, Roger K. ED - Scheutz, Matthias T1 - Ubiquity of Computing and SLIVAR BT - Towards Effective and Ethical Interaction T2 - Spoken Language Interaction with Virtual Agents and Robots (SLIVAR): Towards Effective and Ethical Interaction KW - human-robot interaction KW - spoken language processing KW - virtual agents Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0030-drops-124009 VL - 10 PB - Schloss Dagstuhl ‐ Leibniz-Zentrum für Informatik CY - Dagstuhl, Germany ER - TY - JOUR A1 - Lauer, Norina T1 - Therapieansätze zur Behandlung der erworbenen Sprechapraxie JF - mitSPRACHE N2 - Bei neurologischen Erkrankungen können, meist begleitet von Aphasien bzw. Dysarthrien, Sprechapraxien auftreten. Sie sind durch Störungen in Artikulation, Prosodie und Sprechverhalten gekennzeichnet. Zur Untersuchung von Sprechapraxien lassen sich perzeptive und apparative Verfahren einsetzen. Für die Therapie steht eine Vielzahl von Verfahren zur Verfügung, die meist in Einzelfallstudien erprobt wurden. Die Auswahl geeigneter Therapieansätze richtet sich nach den individuellen Störungsschwerpunkten. Die Behandlung sollte möglichst auf Silben- oder Wortebene ansetzen. Einzellautübungen sind nur bei sehr schweren Sprechapraxien initial geeignet. Y1 - 2010 VL - 42 IS - 4 SP - 5 EP - 20 ER - TY - JOUR A1 - Lauer, Norina T1 - Die logopädische Therapie zentral-auditiver Verarbeitungsstörungen bei Kindern JF - mitSPRACHE N2 - In diesem Beitrag wird die zentral-auditive Verarbeitung anhand eines Modells erläutert. Davon ausgehend wird ein Überblick über Behandlungsmethoden zur Förderung der zentral-auditiven Verarbeitung gegeben. Die einzelnen Therapieansätze werden beschrieben und ihre Vor- und Nachteile diskutiert. Den Schwerpunkt bilden die Darstellung der teilfunktionsorientierten Therapie sowie deren Unterstützung durch den Einsatz von Computerprogrammen und Top-down-Strategien. Y1 - 2008 VL - 40 IS - 2 SP - 5 EP - 19 ER - TY - JOUR A1 - Lauer, Norina T1 - E-Learning für LogopädInnen – Zukunftsvision oder Realität? JF - Forum Logopädie Y1 - 2005 UR - https://docplayer.org/69966734-E-learning-fuer-logopaedinnen-zukunftsvision-oder-realitaet.html VL - 19 IS - 2 SP - 28 EP - 32 ER - TY - CHAP A1 - Lauer, Norina ED - Niebuhr-Siebert, Sandra ED - Wiecha, U. T1 - Zentral-auditive Verarbeitungsstörung T2 - Kindliche Sprach-, Sprech-, Stimm- und Schluckstörungen, Gezielte Elternberatung Y1 - 2012 SN - 978-3-437-44402-9 SP - 139 EP - 155 PB - Elsevier CY - München ER - TY - JOUR A1 - Bieber, Claudia A1 - Spelsberg, Stefanie A1 - Lauer, Norina T1 - Reduzierung intersilbischer Pausen mittels vereinfachten Zeitlupensprechens unter Einbeziehung von Praat als Feedback-Instrument bei mittelschwerer, chronischer Sprechapraxie JF - Neurologie & Rehabilitation Y1 - 2011 VL - 17 IS - 5/6 SP - 288 EP - 289 ER - TY - JOUR A1 - Lauer, Norina T1 - Direkte Kooperation von Aphasietherapeuten und Selbsthilfe am Beispiel des Round-Tables zur Verbesserung der Aphasikerversorgung JF - Aphasie und verwandte Gebiete Y1 - 2006 VL - 19 IS - 3 SP - 54 EP - 59 ER - TY - BOOK A1 - Lauer, Norina A1 - Birner-Janusch, Beate T1 - Sprechapraxie im Kindes- und Erwachsenenalter KW - Logopädie KW - Motorische Aphasie Y1 - 2010 UR - 978-3-13-142452-5 PB - Thieme CY - Stuttgart ET - 2., vollst. überarb. Aufl. ER - TY - JOUR A1 - Lauer, Norina T1 - Gezielte logopädische Diagnostik und Therapie bei Kindern mit zentral-auditiven Wahrnehmungsstörungen JF - Sprache, Stimme, Gehör Y1 - 1996 VL - 20 IS - 4 SP - 209 EP - 214 ER - TY - BOOK A1 - Lauer, Norina T1 - Zentral-auditive Verarbeitungsstörungen im Kindesalter BT - Grundlagen, Klinik, Diagnostik, Therapie Y1 - 1999 SN - 978-3-13-115811-6 PB - Thieme CY - Stuttgart ER - TY - BOOK A1 - Lauer, Norina T1 - Zentral-auditive Verarbeitungsstörungen im Kindesalter BT - Grundlagen, Klinik, Diagnostik, Therapie Y1 - 2001 PB - Thieme CY - Stuttgart ET - 2. Auflage ER - TY - BOOK A1 - Lauer, Norina A1 - Birner-Janusch, Beate T1 - Sprechapraxie im Kindes- und Erwachsenenalter Y1 - 2007 SN - 978-3-13-142451-8 PB - Thieme CY - Stuttgart ER - TY - BOOK A1 - Lauer, Norina T1 - Aphasie-Selbsthilfe. Konzepte, Strukturen und Empirie Y1 - 2010 SN - 978-3-8248-0840-3 PB - Schulz-Kirchner CY - Idstein ER - TY - JOUR A1 - Lauer, Norina T1 - Diagnostik und Behandlung zentral-auditiver Verarbeitungsstörungen in der Logopädie JF - praxis ergotherapie Y1 - 2001 VL - 4 IS - 14 SP - 221 EP - 228 ER - TY - JOUR A1 - Lauer, Norina T1 - Therapiemethoden zur Behandlung zentral-auditiver Verarbeitungsstörungen JF - Forum Logopädie Y1 - 2000 VL - 6 IS - 14 SP - 7 EP - 12 ER - TY - JOUR A1 - Lauer, Norina A1 - Danz, Ursula T1 - Systematischer Einsatz von Hilfen in der Aphasietherapie JF - Forum Logopädie Y1 - 1997 VL - 11 IS - 5 SP - 9 EP - 13 ER - TY - JOUR A1 - Lauer, Norina T1 - Therapiekonzepte zur Behandlung der erworbenen Sprechapraxie JF - logoTHEMA Y1 - 2008 IS - März SP - 2 EP - 8 ER - TY - JOUR A1 - Hausleiter, Jörg A1 - Kastrati, Adnan A1 - Wessely, Rainer A1 - Dibra, Alban A1 - Mehilli, Julinda A1 - Schratzenstaller, Thomas A1 - Graf, Isolde A1 - Renke-Gluszko, Magdalena A1 - Behnisch, Boris A1 - Dirschinger, Josef A1 - Wintermantel, Erich A1 - Schömig, Albert T1 - Prevention of restenosis by a novel drug-eluting stent system with a dose-adjustable, polymer-free, on-site stent coating JF - European Heart Journal - Clinical research N2 - Aims Drug-eluting stents (DES) represent a major advance in interventional cardiology. Along with the success shown, current DES also present limitations related to the presence of polymer-coating, fixed drug, and dose used. With the ISAR (Individualized Drug-Eluting Stent System to Abrogate Restenosis) project, a DES system has been developed that permits individualized choice of the drug and dose to use for the given patient. The objective of this prospective dose finding study was to assess the feasibility, safety, and efficacy of a polymer-free on-site stent coating with increasing rapamycin doses. Methods and results In this dose finding study, 602 patients were sequentially enrolled in four groups: microporous bare metal stent (BMS), DES stents coated with a 0.5, 1.0, and 2.0% rapamycin solution. The angiographic in-segment restenosis rate at follow-up angiography was the primary study endpoint. In-segment restenosis was significantly reduced from 25.9% with BMS to 18.9, 17.2, and 14.7% with 0.5, 1.0, and 2.0% rapamycin-eluting stents, respectively (P=0.024). Similarly, the need for target lesion revascularization at 1 year follow-up was reduced from 21.5% with BMS to 16.4, 12.6, and 8.8% with 0.5, 1.0, and 2.0% rapamycin-eluting stents, respectively (P=0.006). Conclusion The placement of polymer-free stents coated on-site with rapamycin is feasible and safe. Furthermore, a dose-dependent efficacy in restenosis prevention is achievable with this new DES concept. KW - Restenosis KW - Stents KW - Randomized KW - Rapamycin KW - Polymer Y1 - 2005 U6 - https://doi.org/10.1093/eurheartj/ehi405 VL - 26 IS - 15 SP - 1475 EP - 1481 ER - TY - BOOK A1 - Lauer, Norina T1 - Alltagsorientierter Umgang mit Zahlen. Eine Übungssammlung für Menschen mit neurologisch bedingten Problemen bei Zahlenverarbeitung und Rechnen N2 - Dieser umfangreiche Arbeitsordner ermöglicht erstmalig ein streng alltagsorientiertes Training basaler Fähigkeiten der Mengen- und Zahlenverarbeitung. Neben einer Einführung in die theoretischen Grundlagen der Diagnostik und Therapie von Zahlenverarbeitungsstörungen finden sich hochgradig alltagsorientierte Aufgaben zu Funktionen des Zuordnens, Einschätzens, Auswählens, Be- und Umrechnens, Beurteilens und Prüfens aus den Bereichen Uhrzeit, Temperatur, Geld, Backen, Waschen, Handwerken, Ausgehen, Autofahren, Fahrpläne und Urlaub. Y1 - 2011 SN - 978-3-935204-95-8 PB - ProLog CY - Köln ER - TY - BOOK A1 - Lauer, Norina T1 - Auditive Verarbeitungsstörungen im Kindesalter KW - Kind KW - Znetrale Hörstörung Y1 - 2014 SN - 978-3131158147 U6 - https://doi.org/10.1055/b-002-95268 PB - Thieme CY - Stuttgart ET - 4., vollständig überarbeitete Auflage ER - TY - BOOK A1 - Geißler, Maria A1 - Lauer, Norina T1 - Sprechapraxie – Ein Ratgeber für Betroffene und Angehörige Y1 - 2015 SN - 978-3824811915 PB - Schulz-Kirchner CY - Idstein ET - 3. Auflage ER - TY - BOOK A1 - Lauer, Norina T1 - Zentral-auditive Verarbeitungsstörungen im Kindesalter Y1 - 2006 PB - Thieme CY - Stuttgart ET - 3. Auflage ER - TY - JOUR A1 - Lauer, Norina T1 - Ein neues Modell zur zentral-auditiven Verarbeitung JF - Forum Logopädie Y1 - 1999 VL - 13 IS - 3 SP - 1 EP - 3 ER - TY - JOUR A1 - Weber, Karsten T1 - New Mobile Devices and Surveillance BT - Questions Concerning Epistemology and Some New Challenges for Privacy and Data Protection JF - Postmodern Openings Journal N2 - Mobile devices help people to stay connected across huge distances and to socially interact while in spatially separated environments. However, compared to faceto-face-interaction, communication and interaction via mobile phones currently are still restricted. Therefore, an idea of Mann, Fung, and Lo concerning cyborglogging with camera phones shall be taken a step further. A scenario is described in which a modified version of their design is used to support social interaction across the borders of spatially separated environments in a new manner. It shall be argued that this might create a new understanding of being present at a certain place while at the same time it raises questions concerning privacy, surveillance and authenticity of experience. Y1 - 2012 VL - 3 IS - 3 ER - TY - GEN T1 - VDEI Expertenforum: Schwerpunktthema Stadtbahn-Neubau, 13. Oktober 2022, OTH Regensburg N2 - Dr. Christoph Groneck: „Erfolgsfaktoren der rezenten Stadtbahnneubauprojekte in Frankreich“. Seit Mitte der 1980er Jahre werden in Frankreich mit großem Erfolg neue oberirdische Straßenbahnsysteme realisiert, nachdem das Verkehrssystem Straßenbahn vormals landesweit nahezu vollständig verschwunden war. Kennzeichnend für die Projekte sind eine meist komplette Neuordnung städtischer Verkehrsstrukturen sowie eine integrierte Betrachtung von Stadtgestaltung und Verkehrsanlagenbau. Der Vortrag zeichnet die Entwicklungsgeschichte der neuen Systeme sowie deren Planungsleitbilder und Erfolgsfaktoren nach. Jochen Gewecke: „Rück- und Vorschau Projektkommunikation Regionalstadtbahn Neckar-Alb“. Die RegioStadtbahn Neckar-Alb ist ein großes Verkehrsprojekt in der Region Neckar-Alb mit einem künftigen Schienennetz von 198 Kilometern, davon 38 Kilometer neu oder reaktiviert sowie einem Investitionsvolumen von über 1 Milliarde Euro. Ein erstes Modul geht 2022/23 in Betrieb, während die Innenstadtstrecke durch Tübingen durch einen Bürgerentscheid gestoppt wurde, vielleicht aber nur vorübergehend. Der Vortrag skizziert das Gesamtprojekt und stellt den Wahlkampf zum Bürgerentscheid vor. Thomas Feig: „Das Projekt Stadtbahn Regensburg“. Regensburg ist die größte Stadt im süddeutschen Raum, die ihren öffentlichen Personennahverkehr bisher ohne schienengebundenes Verkehrsmittel organisiert. In Beschlüssen des Stadtrates wie dem Leitbild für Energie und Klima, dem aktuellen Stadtentwicklungsplan 2040 und insbesondere mit einem Grundsatzbeschluss aus dem Jahr 2018 ist die Bedeutung des Stadtbahn-Projektes für eine wachsende Stadt und ein nachhaltig ökologisches öffentliches Verkehrssystem dokumentiert. Der Vortrag informiert über die Organisation der Planung, über besondere Herausforderungen und wichtige Meilensteine sowie die erzielten Fortschritte im Projekt. Frank Steinwede: „Fahrzeugkonzepte für die Stadtbahn Regensburg“. Die anstehenden Verkehrsaufgaben werden mit ihren besonderen Herausforderungen an das künftige Stadtbahnsystem in Regensburg dargestellt. Diese haben unmittelbare Auswirkungen auf die Rahmenbedingungen, die das künftige Stadtbahnfahrzeug mit seinen Abmessungen zu erfüllen hat. Anhand verschiedener Fahrzeugkonzepte wird der Weg zum Wunschfahrzeugtyp hergeleitet. Sandra Schönherr: „Netzkonzeption Busverkehre im Rahmen des Projekts Stadtbahn Regensburg“. Regensburg steht vor der Herausforderung, den Ansprüchen einer wachsenden Stadt und der nicht zuletzt durch die Entwicklungen im Energiesektor beeinflusste Mobilitätswende mit einem attraktiven und zukunftsfähigen Mobilitätsangebot gerecht zu werden. Die Entscheidung für ein höherwertiges ÖPNV-System - die Stadtbahn - wurde 2018 getroffen. Das Stadtwerk Regensburg.Mobilität GmbH (SMO) mit der Aufgabe betraut, ein funktionsfähiges ÖPNV-Netz zu konzipieren, das die Stadtbahn durch optimierten Stadtbuseinsatz unter den gegebenen infrastrukturellen Rahmenbedingungen ergänzt. Der Vortrag wird die Strategie vorgestellt, mit der die SMO dieses Ziel erreichen wird. Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-55585 CY - Regensburg ER - TY - JOUR A1 - Galka, Stefan A1 - Klenk, Eva Marianne A1 - Günthner, Willibald A. T1 - Einfluss von Artikeleigenschaften auf die Entnahmezeit in Kommissioniersystemen JF - Logistics Journal / Proceedings N2 - Das Kommissionieren zählt zu den arbeitsintensivsten Aufgaben in der Logistik. Aus diesem Grund ist es wichtig, möglichst genau die erwarteten Prozesszeiten für diese Aufgabe zu bestimmen. Ein verbreiteter Ansatz für die Bestimmung von Prozesszeiten für manuelle Tätigkeiten beim Kommissionieren ist die Methods-Time-Measurement (MTM). Um eine Vorgabezeit mittels MTM zu bestimmen, müssen Einflussfaktoren spezifiziert werden. Dieser Beitrag zeigt anhand der Greifzeit auf, wie diese Einfluss-faktoren auf Grundlage von Artikelstammdaten bestimmt werden können. Weiterhin wird der Unterschied zwischen einer für jeden Artikel individuell bestimmten Greifzeit und der Greifzeit basierend auf repräsentativen Eigenschaften von Artikelgruppen verglichen. Wesentlich wird dabei die mittels MTM bestimmte Greifzeit durch das Gewicht und die Abmessungen (Sperrigkeit) beeinflusst. T2 - Impact of items characteristics on picking time in order picking systems systems Y1 - 2016 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0009-14-44540 SN - 2192-9084 PB - WGTL, Wissenschaftliche Gesellschaft für Technische Logistik e. V. CY - Stuttgart ; Dortmund ER - TY - THES A1 - Frikel, Jürgen T1 - Reconstructions in limited angle x-ray tomography: Characterization of classical reconstructions and adapted curvelet sparse regularization N2 - This thesis is devoted to the problem of tomographic reconstruction at limited angular range. In the first part, we prove a characterization of filtered backprojection reconstructions from limited angle data. Moreover, we develop a strategy for artifact reduction and stabilization. In the second part, we introduce a new edge-preserving reconstruction algorithm for limited angle tomography and analyze this algorithm mathematically. Some numerical experiments are also presented. N2 - Diese Arbeit beschäftigt sich mit der tomographischen Rekonstruktion bei eingeschränktem Winkelbereich. Im ersten Teil wird eine Charakterisierung der Rekonstruktionen mittels gefilterter Rückprojektion bewiesen. Darüberhinaus wird eine Strategie zur Artefaktreduktion und Stabilisierung entwickelt. Der zweite Teil stellt einen neuen kantenerhaltenden Rekonstruktionsalgorithmus für die Computertomographie bei eingeschränktem Winkelbereich vor and analysiert diesen mathematisch. Numerische Experimente runden die Arbeit ab. KW - Computertomographie KW - Optimale Rekonstruktion KW - Regularisierungsverfahren Y1 - 2013 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:91-diss-20130328-1115037-0-3 UR - https://mediatum.ub.tum.de/?id=1115037 PB - Technische Universität München CY - München ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Zilch, Konrad T1 - Comparison of Guidelines for Externally Bonded Reinforcement T2 - Codes in structural engineering - Developments and needs for international practice ; joint IABSE - fib conference, Dubrovnik, Croatia, May 3 - 5, 2010 Y1 - 2010 SN - 978-9537621087 CY - Zagreb ER - TY - JOUR A1 - Schütz, Sandra A1 - Huber, A. A1 - Günther, C. A1 - Jordan, A. A1 - Schroeder, U. T1 - Hirn und Persönlichkeit BT - Beziehung als Heilmittel JF - Die Sprachheilarbeit Y1 - 2007 VL - 52 IS - 2 SP - 238 EP - 239 ER - TY - JOUR A1 - Knödler, Christoph T1 - Zur Koalition von Universität und kommerziellem Repetitor JF - Juristische Schulung - JuS Y1 - 1999 IS - 10 SP - 1032 EP - 1035 PB - C.H. Beck CY - München ER - TY - CHAP A1 - Weber, Karsten ED - Frank, Ulrich T1 - Der wissenschaftstheoretische Status von Simulationen T2 - Wissenschaftstheorie in Ökonomie und Wirtschaftsinformatik. Theoriebildung und -bewertung, Ontologien, Wissensmanagement N2 - Computersimulationen — hier wird häufig nur noch von Simulationen gesprochen — haben sich in vielen wissenschaftlichen und technischen Bereichen zu unverzichtbaren Werkzeugen für Forschung und Entwicklung entwickelt. Sie stellen ein mächtiges Werkzeug zur Untersuchung von Abläufen in ganz verschiedenen Disziplinen dar — von der Kosmologie bis zur Ökonomie — und scheinen die Grenzen der Wissenschaft weiter hinauszuschieben. Allerdings muss konstatiert werden, dass die Verwendung von Simulationen im Forschungsprozess häufig unkritisch geschieht und wichtige wissenschaftstheoretische Einwände nicht beachtet werden. Diese sollen zunächst allgemein dargestellt sowie kritisch diskutiert und danach Konsequenzen für die Wirtschaftsinformatik genannt werden*. KW - Computersimulation KW - Wissenschaftstheorie Y1 - 2004 U6 - https://doi.org/10.1007/978-3-322-81127-1_9 PB - DUV CY - Wiesbaden ER - TY - CHAP A1 - Goedeke, Arne A1 - Schulz, Carsten A1 - Gruss, H. T1 - Erfassung von Katzposition und Hublast zur Lebensdauerberechnung von Brückenkranen T2 - DMK - Dresdner Maschinenelemente Kolloquium, 2017, Dresden Y1 - 2017 PB - sierke-Verlag ER - TY - PAT A1 - Aechtner, Stefan A1 - Hornberger, Helga A1 - Nagel, Emil A1 - Thiel, Norbert T1 - Composite material and method for the preparation thereof N2 - A composite material with a porous inorganic-nonmetallic matrix and a second material, characterized in that said porous inorganic-nonmetallic matrix has a bending strength of >=40 MPa as measured according to ISO 6 872; said second material is an organic material which at least partly fills the pores of said porous matrix; and said composite material has a modulus of elasticity, E, of >=25 GPa as measured according to ISO 10 477. Y1 - 2001 UR - https://depatisnet.dpma.de/DepatisNet/depatisnet?action=bibdat&docid=US020090001623A1 ER - TY - PAT A1 - Muerrle, Ulrich A1 - Hornberger, Helga T1 - Method of making a ceramic restoration N2 - Production of a dental reconstruction comprises: (a) forming a mold (12) from a model (10); (b) using (12) to make an isotropically heat-expandable replica from a ceramic precursor (14); (c) oxidizing (14) to produce an enlarged ceramic replica; (d) forming a silicone mold from this replica; (e) using (d) to make a second ceramic replica; and (f) sintering the second replica with volume reduction to form a replica identical to (10). T2 - Verfahren zur Herstellung einer Zahnrestauration aus Keramik Y1 - 2003 UR - https://depatisnet.dpma.de/DepatisNet/depatisnet?action=bibdat&docid=EP000001346702A1 ER - TY - JOUR A1 - Hornberger, Helga A1 - Weissmann, R. A1 - Lutz, N. T1 - Machining of silica glasses using excimer laser radiation JF - Glastechnische Berichte - Glass Science and Technology Y1 - 1996 VL - 69 IS - 2 SP - 44 EP - 49 ER - TY - JOUR A1 - Hornberger, Helga A1 - Witte, Frank A1 - Hort, Norbert A1 - Müller, Wolf-Dieter T1 - Effect of fetal calf serum on the corrosion behaviour of magnesium alloys JF - Materials Science and Engineering B N2 - The corrosion behaviour of WE43 magnesium alloys using the mini cell system was studied. Voltammetry and impedance spectroscopy were applied to study on the one hand the effect of microstructure of the working electrode and on the other hand the effect of proteins in the electrolyte. Two types of alloy samples were produced (i) by permanent mould casting and (ii) by gas atomization followed by extrusion. The results showed that the microstructure was strongly influenced by the production process. The extruded samples showed an improved homogeneity of phase distribution compared with cast samples as it was aimed for. Due to increased homogeneity it was expected to find higher corrosion resistance. However, the electrochemical results are contradictory and suggest an additional phase in the extruded microstructure. Using energy dispersive X-ray spectroscopy (EDX) the secondary magnesium rare earths (RE) phase of extruded samples showed differing composition than of cast samples as well as additional oxide phases. After the samples were electrochemically investigated in cell medium with and without fetal calf serum (FCS), an impact of FCS was detected in voltammetry due to the length of the polarisation curve. As the tip of the mini cell in contact with the working electrode is small, developing gases tend to spread on the working electrode and break the contact of liquid to the counter electrode; which results in disrupting the current flow. This effect was more pronounced when rising the voltage and was found reduced when using electrolytes with FCS. Impedance spectra were slightly deformed by FCS, seen as a kinetic effect but not as a basic differing corrosion reaction. The insight into the effects of FCS was provided by the mini cell system as this system enables to collect entire series of measurements. In contrast of two single measurements, those series reflected the slight difference caused by FCS. The focus of the electrochemical corrosion study was set on the first half hour of immersion. KW - Magnesium KW - Corrosion KW - Proteins KW - Impedance KW - Reproducibility KW - Polarization Y1 - 2011 U6 - https://doi.org/10.1016/j.mseb.2011.07.018 VL - 176 IS - 29 SP - 1746 EP - 1755 ER - TY - PAT A1 - Hornberger, Helga A1 - Thiel, Norbert A1 - Vollmann, Markus T1 - Fully ceramic tooth replacement with a frame made of cer-stabilised zircon-oxide N2 - Vollkeramischer Zahnersatz mit einem Gerüst, das aus einem Gerüstmaterial aus einem Cer-stabilisierten Zirkonoxid (Ce-ZrO2) mit einem Anteil von bis zu 25 Gew% Aluminiumoxid (Al2O3) bezogen auf den Anteil an ZrO2 aufgebaut ist und einem Infiltrationsglasanteil im Gerüst von 0-40 Vol% bezogen auf das Volumen des Gerüsts sowie einer auf das Gerüstmaterial abgestimmten Verblendkeramik.Die Erfindung betrifft die Verwendung von cer-stabilisiertem ZrO2 zur Herstellung von Gerüstmaterialien, die als Restauration im Dentalbereich einsetzbar sind. T2 - Vollkeramischer Zahnersatz mit einem Gerüst aus einem cer-stabilisierten Zirkonoxid Y1 - 2002 UR - https://depatisnet.dpma.de/DepatisNet/depatisnet?action=bibdat&docid=WO002002047616A3 ER - TY - BOOK A1 - Fingerloos, Frank A1 - Finckh, Wolfgang A1 - Hochreither, Heinrich A1 - Ignatiadis, Anett A1 - Jenisch, Franz-Michael A1 - Landgraf, Markus A1 - Prietz, Frank A1 - Schmitt, Walter A1 - Schuster, Konrad A1 - Schwabach, Enrico T1 - Verbesserung der Praxistauglichkeit der Baunormen durch pränormative Arbeit - Teilantrag 2: Betonbau Y1 - 2015 UR - https://www.irbnet.de/daten/rswb/15089002957.pdf PB - Fraunhofer IRB Verlag CY - Stuttgart ER - TY - CHAP A1 - Hussein, Hussein A1 - Meyer-Sickendiek, Burkhard A1 - Baumann, Timo T1 - Tonality in Language: The Generative Theory of Tonal Music as a Framework for Prosodic Analysis of Poetry T2 - 6th International Symposium on Tonal Aspects of Languages (TAL 2018), 18-20 June 2018, Berlin, Germany N2 - This contribution focuses on structural similarities between tonality and cadences in music on the one hand, and rhythmical patterns in poetic languages respectively poetry on the other hand. We investigate two exemplary rhythmical patterns in modern and postmodern poetry to detect these tonality-like features in poetic language: The Parlando and the Variable Foot. German poems readout from the original poets are collected from the webpage of our partner lyrikline. We compared these rhythmical features with tonality rules, explained in two important theoretical volumes: The Generative Theory of Tonal Music and the Rhythmic Phrasing in English Verse. Using both volumes, we focused on a certain combination of four different features: The grouping structure, the metrical structure, the time-span-variation and the prolongation, in order to detect the two important rhythmical patterns which use tonality-like features in poetic language (Parlando and Variable Foot). Different features including pause and parser information are used in this classification process. The best classification result, calculated by the f-measure, for Parlando and Variable Foot is 0.69. KW - tonality in poetic language KW - prosodic patterns in postwar poems KW - automatic detection of prosodic features Y1 - 2018 U6 - https://doi.org/10.21437/TAL.2018-36 SP - 178 EP - 182 PB - ISCA ER - TY - CHAP A1 - Baumann, Timo A1 - Hussein, Hussein A1 - Meyer-Sickendiek, Burkhard T1 - Analysis of Rhythmic Phrasing: Feature Engineering vs. Representation Learning for Classifying Readout Poetry T2 - Proceedings of the Second Joint SIGHUM Workshop on Computational Linguistics for Cultural Heritage, Social Sciences, Humanities and Literature (LaTeCH-CLfL-2018), August 25, 2018, Santa Fe, New Mexico, USA N2 - We show how to classify the phrasing of readout poems with the help of machine learning algorithms that use manually engineered features or automatically learn representations. We investigate modern and postmodern poems from the webpage lyrikline, and focus on two exemplary rhythmical patterns in order to detect the rhythmic phrasing: The Parlando and the Variable Foot. These rhythmical patterns have been compared by using two important theoretical works: The Generative Theory of Tonal Music and the Rhythmic Phrasing in English Verse. Using both, we focus on a combination of four different features: The grouping structure, the metrical structure, the time-span-variation, and the prolongation in order to detect the rhythmic phrasing in the two rhythmical types. We use manually engineered features based on text-speech alignment and parsing for classification. We also train a neural network to learn its own representation based on text, speech and audio during pauses. The neural network outperforms manual feature engineering, reaching an f-measure of 0.85. Y1 - 2018 UR - https://aclanthology.org/W18-4505 SP - 44 EP - 49 PB - Association for Computational Linguistics CY - Santa Fe, New Mexico ER - TY - JOUR A1 - Saßmannshausen, Sean Patrick A1 - Maritz, Alex A1 - Frederick, Howard A1 - Jones, Colin A1 - Katzenstein, Liora T1 - The Many Facets of Entrepreneurship in Practice and Research: Encouraging the Academic Dialogue JF - Journal of Asia Entrepreneurship and Sustainability Y1 - 2011 UR - http://www.asiaentrepreneurshipjournal.com/2011/AJESDec11Iss2.pdf VL - 7 IS - 2 SP - 4 EP - 12 PB - RossiSmith Academic Publishing ER - TY - RPRT A1 - Saßmannshausen, Sean Patrick A1 - Volkmann, Christine T1 - EXIST-III-Projekt "bizeps gazelles" BT - Abschlussbericht ; Projektlaufzeit: 01.11.2007 - 28.02.2011 Y1 - 2011 U6 - https://doi.org/10.2314/GBV:738225290 PB - Schumpeter Schooel of Business and Economics, Inst. für Gründungs- und Innovationsforschung CY - Wuppertal ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Zilch, Konrad A1 - Niedermeier, Roland T1 - DAfStb-Richtlinie: „Verstärken von Betonbauteilen mit geklebter Bewehrung –Bemessung T2 - 14. Münchener Massivbau Seminar 2010 Y1 - 2010 PB - Förderverein Massivbau der TU München e.V. CY - München ET - CD-ROM ER - TY - JOUR A1 - Thieme, H. A1 - Pfingsten, Andrea A1 - Schiller, S. A1 - Spitzer, L. A1 - Borgetto, Bernhard T1 - Prädiktoren der Teilnahme an Gesprächskreisen und Funktionstraining von Patienten mit rheumatischen Erkrankungen. JF - Aktuelle Rheumatologie T2 - Predictors for Participation in Conversational Groups and Functional Training by Patients Suffering from Rheumatic Diseases Y1 - 2013 U6 - https://doi.org/10.1055/s-0033-1353179 VL - 38 IS - 6 SP - 375 EP - 379 PB - Thieme ET - eFirst 18.9.2013 ER - TY - CHAP A1 - Raptis, Georgios T1 - Die Konzepte und Mechanismen der elektronischen Gesundheitskarte und des Heilberufsausweises aus der Sicht der Datensicherheit / des Datenschutzes BT - Vortrag T2 - Forschungsseminar med. Informatik an der Universität Heidelberg, 22.06.2006 KW - Elektronische Gesundheitskarte KW - Heilberuf KW - Ausweis KW - Datenschutz KW - Datensicherheit Y1 - 2005 ER - TY - GEN A1 - Raptis, Georgios T1 - Übersicht über die neuen Technischen Richtlinien des BSI zum ersetzenden Scannen und zur Langzeitarchivierung BT - Vortrag T2 - Telemed 2014, Berlin, 14.10.2014 Y1 - 2014 ER - TY - GEN A1 - Raptis, Georgios T1 - Mobile Szenarien für Anwendungen der eGK BT - Vortrag T2 - CAST-Workshop Smartcards, Darmstadt, 25.09.2014 KW - Elektronische Gesundheitskarte Y1 - 2014 ER - TY - GEN A1 - Raptis, Georgios T1 - Datenschutzfragen zur Telemedizin BT - Vortrag T2 - Fachtagung Datenschutz in der Medizin - Update 2015 I, Hamburg 03.02.2015 KW - Telemedizin KW - Datenschutz Y1 - 2015 ER - TY - CHAP A1 - Raptis, Georgios T1 - Ein Verfahren zur Lösung des Problems der kryptographischen Langzeitsicherheit medizinischer Daten, die in einer Infrastruktur gespeichert werden T2 - BIOSIG-Konferenz 2007, Darmstadt N2 - Medizinische Daten, die - wie derzeit für die Telematik-Infrastruktur nach §291a SGB V spe-zifiziert - auch außerhalb der physischen Kontrolle der Eigentümer oder Ersteller (also z.B. außerhalb von Arztpraxen oder Klinken) auf Servern kryptographisch verschlüsselt gespeichert werden, müssen sehr lange vertraulich bleiben. Insbesondere darf der technische Betreiber des Servers, der die Daten speichert, keinen Zugriff erlangen. Es kann jedoch keine verlässliche Aussage dahingehend getroffen werden, ob die heute eingesetzten kryp-tographischen Algorithmen in 30 oder 40 Jahren die Vertraulichkeit der medizinischen Daten weiterhin gewährleisten. Es wird ein Verfahren vorgestellt, welches das Problem der langfristigen Sicherheit von verschlüsselt gespeicherten medizinischen Daten aus kryptographischer Sicht löst. Die Anwendung des Verfahrens wird am Beispiel einer nach den derzeit bekannten gematik-Spezifikationen definierten Infrastruktur veranschaulicht. Es wird von einer getrennten Speicherung von verschlüsselten medizinischen Daten und Schlüsselmaterial ausgegangen. Die Daten werden an der Datenquelle (Konnektor, z.B. eines Arztes) mit einem Einmalblock (One Time Pad, OTP) verschlüsselt. Sie sind damit beweisbar sicher verschlüsselt, weil das One-Time-Pad-Verschlüsselungsverfahren beweisbar „perfekt geheim“ ist. Der OTP-Schlüssel wird mit einem symmetrischen Schlüssel verschlüsselt, der wiederum mit den asymmetrischen Schlüsseln aller Zugriffsberechtigten verschlüsselt wird. Die kryptographische, technische und organisatorische Sicherheit des Verfahrens sowie seine Voraussetzungen und Kosten werden analysiert. KW - Gesundheitsinformationssystem KW - Datensicherhung KW - Kryptologie Y1 - 2007 UR - http://www.baek.de/downloads/Raptis_Verfahren-2.pdf ER - TY - CHAP A1 - Wiesmaier, Alexander A1 - Lippert, Markus A1 - Karatsiolis, Vangelis A1 - Raptis, Georgios A1 - Buchmann, Johannes T1 - An Evaluated Certification Services System for the German National Root CA - Legally Binding and Trustworthy Transactions in E-Business and E-Government T2 - Proceedings of The 2005 International Conference on E-Business, Enterprise Information Systems, E-Government, and Outsourcing, EEE 2005, Las Vegas, Nevada, USA, June 20-23, 2005 Y1 - 2005 SN - 1-932415-76-9 SP - 103 EP - 108 PB - CSREA Press ER - TY - GEN A1 - Raptis, Georgios T1 - Biometrie - Anwendungen und Datenschutz. Welche Zusatzinformationen liefert der IRIS-Pförtner? Nebennutzen in einem biometrischen Zugangskontrollsystem. Medizinische Hintergründe. Symposium des Bundesamtes für Sicherheit in der Informationstechnik, Vortrag, Darmstadt 23. Mai 2002 BT - Vortrag, Darmstadt 23. Mai 2002 T2 - Symposium des Bundesamtes für Sicherheit in der Informationstechnik Y1 - 2002 ER - TY - JOUR A1 - Busch, Ch. A1 - Daum, H. A1 - Raptis, Georgios T1 - Merkmal Iris. Können diese Augen lügen? JF - Spektrum der Wissenschaft KW - Biometrie KW - Mustererkennung KW - Iris KW - Regenbogenhaut Y1 - 2003 UR - https://www.spektrum.de/magazin/koennen-diese-augen-luegen/829906 IS - 7 SP - 81 EP - 82 ER - TY - BOOK A1 - Sauer, S. A1 - Wolf, Th. A1 - Buch, M. A1 - Raptis, Georgios T1 - Sichere Client-Server-Architekturen für E-Government BT - E-Government-Handbuch KW - Client-Server-Konzept KW - Datensicherheit KW - E-Government Y1 - 2004 ER - TY - GEN A1 - Raptis, Georgios T1 - Mögliche Auswirkungen der eIDAS-Verordnung auf die Telematikinfrastruktur und die eArztausweise BT - Vortrag T2 - CAST-Workshop PKI, Darmstadt, 29.01.2015 KW - Europäische Union KW - Telemedizin KW - eArztausweis KW - Elektronischer Arztausweis Y1 - 2015 ER - TY - THES A1 - Raptis, Georgios T1 - Klassifikation, Anwendungen und Sicherheitskonzept von Trustcentern KW - Trust Center Y1 - 2004 ER - TY - GEN A1 - Raptis, Georgios T1 - Ist die Sicherheit der medizinischen Daten in der Telematik-Infrastruktur zu gewährleisten? BT - Vortrag an der Universität Heidelberg, Kolloquium Wissenschaftlichkeit in der Medizin, 10.05.2007 T2 - Kolloquium Wissenschaftlichkeit in der Medizin, Universität Heidelberg, 10.05.2007 KW - Telemedizin KW - Datensicherheit Y1 - 2007 ER - TY - GEN A1 - Raptis, Georgios T1 - Datenschutz und IT-Sicherheit: Empfehlungen von BÄK und KBV für Ärzte BT - Vortrag T2 - AK-Sicherheit des eco-Verband der deutschen Internetwirtschaft e.V., Köln, 06.05.2009 KW - Arztpraxis KW - Datenschutz KW - Datensicherheit Y1 - 2009 ER - TY - GEN A1 - Raptis, Georgios T1 - Sichere Gesundheitsdaten in der Cloud? Technische Voraussetzungen und Regelungen BT - Vortrag T2 - 8. Rhein-Main Zukunftskongress Krankenhaus & Partner 2014, Offenbach, 21.2.2014 KW - Cloud Computing KW - Gesundheitsinformationssystem KW - Datenschutz Y1 - 2014 ER - TY - JOUR A1 - Raptis, Georgios T1 - App statt Arzt ist kein gutes Motto BT - Interview JF - medizin & technik Y1 - 2013 UR - https://medizin-und-technik.industrie.de/medizin/mediziner-ueber-technik/app-statt-arzt-ist-kein-gutes-motto/ IS - 2 ER - TY - GEN A1 - Raptis, Georgios T1 - Papierlose Praxis & Digitalisierung BT - Vortrag T2 - 6. BMVZ-Praktikerkongress des Bundesverbands Medizinische Versorgungszentren - Gesundheitszentren - Integrierte Versorgung e.V, 12.09.2012 Berlin, zertifiziert von der Ärztekammer Berlin KW - Arztpraxis KW - Digitalisierung Y1 - 2012 ER - TY - GEN A1 - Raptis, Georgios T1 - Die elektronische Gesundheitskarte BT - Vortrag T2 - 7. Kommunikationsforum "Industry meets Medicine", Olpe, 5.11.2014 KW - Elektronische Gesundheitskarte Y1 - 2014 ER - TY - JOUR A1 - Raptis, Georgios T1 - Computer können Ärzte nicht ersetzen BT - Interview JF - Technology Review Y1 - 2014 VL - 11 SP - 82 ER - TY - JOUR A1 - Höh, H. A1 - Gamael, A. A1 - Raptis, Georgios T1 - Energie und Phakozeit bei Ultraschall und Laserphakoemulsifikation JF - Klinische Monatsblätter für Augenheilkunde KW - Phakoemulsifikation KW - Ultraschall Y1 - 2000 VL - 217 IS - Suppl. 8 SP - 5 ER - TY - GEN A1 - Raptis, Georgios T1 - HPCs als Basis für den elektronischen Arztausweis BT - Vortrag T2 - Smartcard-Workshops, Fraunhofer SIT, 07.02.2006 KW - Arzt KW - Ausweis KW - Hochleistungsrechnen Y1 - 2006 ER - TY - JOUR A1 - Fischer, Uta A1 - Raptis, Georgios A1 - Horn, Lars-Christian T1 - Bedeutung der Familienanamnese bei Zervixkarzinom JF - Zentralblatt für Gynäkologie N2 - Fragestellung: Molekulare Analysen haben deutlich gemacht, dass maligne Tumoren durch Veränderungen des Genoms hervorgerufen werden. Im Gegensatz zu den erblich bedingten Tumorerkrankungen sind die Kenntnisse zur Bedeutung familiärer Faktoren bei den sog. sporadischen Tumoren, insbesondere beim Zervixkarzinom (CX) begrenzt. Material und Methode: Patientinnen des CX-Registers der Universitäts-Frauenklinik wurden retrospektiv bezüglich der Familienanamnese (FA) analysiert. Als positive FA wurde eine maligne Tumorerkrankung bei einem oder mehreren Verwandten ersten Grades definiert. Es wurde unterschieden, ob es sich um Zervixkarzinome, andere gynäkologische Malignome (außer Mammakarzinom) oder eine extragenitale Lokalisation handelte. Diese Daten wurden zum Erkrankungsalter und zum Nachweis pelviner Lymphknotenmetastasen in Beziehung gesetzt. Ergebnisse: 159/737 Frauen (21,6 %) wiesen eine positive FA auf. In 10,7 % der Fälle war mehr als ein Verwandter ersten Grades erkrankt; bei 6,9 % Angehörige ersten und zweiten Grades. Weibliche Verwandte ersten Grades von 42 Frauen wiesen Malignome des weiblichen Genitaltraktes (außer CX) auf. In 6,9 % waren die Mutter und/oder die Schwester an einem Zervixkarzinom erkrankt. Das Durchschnittsalter der Patientinnen mit positiver Familienanamnese (FA) unterschied sich nicht von dem derjenigen mit leerer FA, wohl aber bei getrennter Betrachtung nach der Tumorlokalisation. Bezüglich des Tumorstadiums (pTNM) und der Zahl der Patientinnen mit histologisch nachgewiesenen pelvinen Lymphknotenmetastasen bestand kein Unterschied. Schlussfolgerungen: Die bisherigen Ergebnisse deuten auch beim Zervixkarzinom auf eine familiäre Belastung hin. Dabei existieren offenbar Familien, in denen mit HPV-assoziierte Präkanzerosen bzw. Tumoren vermehrt auftreten. Besonders gefährdet sind Patientinnen, deren weibliche Anverwandte ersten Grades bereits an einer zervikalen Präkanzerose (besonders CIN III) oder einem invasiven CX erkrankt sind. Diese Frauen sollten einem engmaschigen Screening unterzogen werden. T2 - Impact of familiar history in cervical cancer patients KW - Gebärmutterhalskrebs KW - Familienanamnese KW - Zervixkarzinom KW - hereditär KW - familiär KW - Anamnese KW - Karzinom KW - Prognose Y1 - 2001 U6 - https://doi.org/10.1055/s-2001-14791 VL - 123 SP - 302 EP - 307 ER - TY - GEN A1 - Raptis, Georgios T1 - Vernetzung und ubiquitäre Informationsverarbeitung – technisch-organisatorischer Datenschutz in der Arztpraxis BT - Vortrag in der 2. Fachtagung der Gesellschaft für Datenschutz und Datensicherheit e.V. (GDD), Berlin, 13.05.2014, zertifiziert von der Ärztekammer Berlin T2 - 2. Fachtagung der Gesellschaft für Datenschutz und Datensicherheit e.V. (GDD), Berlin, 13.05.2014, zertifiziert von der Ärztekammer Berlin KW - Arztpraxis KW - Datenschutz Y1 - 2014 ER - TY - THES A1 - Raptis, Georgios T1 - Vertraulichkeit von medizinischen Daten in der Telematik-Infrastruktur - Sicherheitsanalyse unter Berücksichtigung von Aspekten der langfristigen Sicherheit KW - Medizinische Dokumentation KW - Telekommunikation KW - Datensicherheit Y1 - 2008 CY - Heidelberg ER - TY - CHAP A1 - Lier, Alexander A1 - Martinek, Magdalena A1 - Stamminger, Marc A1 - Selgrad, Kai T1 - A High-Resolution Compression Scheme for Ray Tracing Subdivision Surfaces with Displacement T2 - Proceedings of the ACM on Computer Graphics and Interactive Techniques N2 - Subdivision surfaces, especially with displacement, are one of the key modeling primitives used in high-quality rendering environments, such as, e.g., movie production. While their use easily maps to rasterization-based frameworks, they pose a significant challenge for ray tracing environments. This is due to the fact that incoherent access patterns require storing or caching fully tessellated and displaced meshes for efficient intersection computations. In this paper we use a two-tier hierarchy built on a scene's patches. It relies on compressed and quantized bounding volumes on the second tier to reduce the size of the BVH itself. Based on this acceleration structure, we propose a quantized, compact approximation for leaf nodes while being faithful to the underlying patch-geometry. We build on recent advances and present a system that shows competitive performance regarding run-time speed, which is close to full-resolution pre-tessellation methods as well as to previous compression approaches. Ultimately, we provide strong compression of up to a factor of 5: 1 compared to state-of-the-art methods while maintaining high geometrical fidelity surpassing similarly compact approximations and getting close to uncompressed geometry. KW - Displacement Mapping KW - omputing methodologies KW - Parametric curve and surface models KW - Production Rendering KW - ray tracing KW - Subdivision Surfaces Y1 - 2018 U6 - https://doi.org/10.1145/3233308 VL - 1 IS - 2 SP - 1 EP - 17 PB - The Association for Computers in Mathematics and Science Teaching ER - TY - CHAP A1 - Hussein, Hussein A1 - Meyer-Sickendiek, Burkhard A1 - Baumann, Timo T1 - Identification of Concrete Poetry within a Modern-Poetry Corpus using Neural Networks T2 - Proceedings of the Quantitative Approaches to Versification Conference N2 - This work aims to discern the poetics of concrete poetry by using a corpus-based classification focusing on the two most important techniques used within concrete poetry: semantic decomposition and syntactic permutation. We demonstrate how to identify concrete poetry in modern and postmodern free verse. A class contrasting to concrete poetry is defined on the basis of poems with complete and correct sentences. We used the data from lyrikline, which contain both the written as well as the spoken form of poems as read by the original author. We explored two approaches for the identification of concrete poetry. The first is based on the definition of concrete poetry in literary theory by the extraction of various types of features derived from a parser, such as verb, noun, comma, sentence ending, conjunction, and asemantic material. The second is a neural network-based approach, which is theoretically less informed by human insight, as it does not have access to features established by scholars. This approach used the following inputs: textual information and the spoken recitation of poetic lines as well as information about pauses between lines. The results based on the neural network are more accurate than the feature-based approach. The best results, calculated by the weighted F-measure, for the classification of concrete poetry vis-à-vis the contrasting class is 0.96 Y1 - 2019 UR - https://versologie.cz/conference2019/proceedings/hussein-meyer-sickendiek-baumann.pdf SP - 95 EP - 104 CY - Prague, Czech Republic ER - TY - CHAP A1 - Tsai, Vivian A1 - Baumann, Timo A1 - Pecune, Florian A1 - Cassell, Justine ED - D'Haro, Luis Fernando ED - Banchs, Rafael E. ED - Li, Haizhou T1 - Faster Responses Are Better Responses: Introducing Incrementality into Sociable Virtual Personal Assistants T2 - 9th International Workshop on Spoken Dialogue System Technology N2 - Speech-based interactive systems, such as virtual personal assistants, inevitably use complex architectures, with a multitude of modules working in series (or less often in parallel) to perform a task (e.g., giving personalized movie recommendations via dialog). Add modules for evoking and sustaining sociability with the user and the accumulation of processing latencies through the modules results in considerable turn-taking delays. We introduce incremental speech processing into the generation pipeline of the system to overcome this challenge with only minimal changes to the system architecture, through partial underspecification that is resolved as necessary. A user study with a sociable movie recommendation agent objectively diminishes turn-taking delays; furthermore, users not only rate the incremental system as more responsive, but also rate its recommendation performance as higher. Y1 - 2019 SN - 978-981-13-9442-3 SN - 978-981-13-9445-4 SN - 978-981-13-9443-0 U6 - https://doi.org/10.1007/978-981-13-9443-0_10 SN - 1876-1119 SN - 1876-1100 VL - 579 SP - 111 EP - 118 PB - Springer Singapore CY - Singapore ER - TY - CHAP A1 - Saboo, Ashutosh A1 - Baumann, Timo ED - Bojar, Ondřej ED - Chatterjee, Rajen ED - Federmann, Christian ED - Fishel, Mark ED - Graham, Yvette ED - Haddow, Barry ED - Huck, Matthias ED - Yepes, Antonio Jimeno ED - Koehn, Philipp ED - Martins, André ED - Monz, Christof ED - Negri, Matteo ED - Névéol, Aurélie ED - Neves, Mariana ED - Post, Matt ED - Turchi, Marco ED - Verspoor, Karin T1 - Integration of Dubbing Constraints into Machine Translation T2 - Proceedings of the Fourth Conference on Machine Translation, Volume 1: Research Papers N2 - Translation systems aim to perform a meaning-preserving conversion of linguistic material (typically text but also speech) from a source to a target language (and, to a lesser degree, the corresponding socio-cultural contexts). Dubbing, i.e., the lip-synchronous translation and revoicing of speech adds to this constraints about the close matching of phonetic and resulting visemic synchrony characteristics of source and target material. There is an inherent conflict between a translation’s meaning preservation and ‘dubbability’ and the resulting trade-off can be controlled by weighing the synchrony constraints. We introduce our work, which to the best of our knowledge is the first of its kind, on integrating synchrony constraints into the machine translation paradigm. We present first results for the integration of synchrony constraints into encoder decoder-based neural machine translation and show that considerably more ‘dubbable’ translations can be achieved with only a small impact on BLEU score, and dubbability improves more steeply than BLEU degrades. Y1 - 2019 U6 - https://doi.org/10.18653/v1/W19-5210 SP - 94 EP - 101 PB - Association for Computational Linguistics CY - Stroudsburg, PA, USA ER - TY - CHAP A1 - Baumann, Timo ED - Moore, Roger K. ED - Thill, Serge ED - Marxer, Ricard T1 - Highly Responsive Vocal Interaction through Incremental Processing T2 - Vocal Interactivity in-and-between Humans, Animals and Robots (VIHAR), October 30-4, 2016 N2 - This seminar was held in late 2016 and brought together, for the first time, researchers studying vocal interaction in a variety of different domains covering communications between all possible combinations of humans, animals, and robots. While each of these sub-domains has extensive histories of research progress, there is much potential for cross-fertilisation that currently remains underexplored. This seminar aimed at bridging this gap. In this report, we present the nascent research field of VIHAR and the major outputs from our seminar in the form of prioritised open research questions, abstracts from stimulus talks given by prominent researchers in their respective fields, and open problem statements by all participants. Y1 - 2017 U6 - https://doi.org/10.4230/DagRep.6.10.154 VL - 6 IS - 10 SP - 154 EP - 194 PB - Schloss Dagstuhl ‐ Leibniz-Zentrum für Informatik CY - Dagstuhl, Germany ER - TY - GEN A1 - Tsai, Vivian A1 - Baumann, Timo A1 - Pecune, Florian A1 - Cassell, Justine T1 - Faster Responses are Better Responses: Introducing Incrementality into Sociable Virtual Personal Assistants Y1 - 2018 UR - https://colips.org/conferences/iwsds2018/wp/wp-content/uploads/2018/05/IWSDS-2018_paper_42_presentation.pdf ER - TY - CHAP A1 - Raptis, Georgios T1 - Empfehlungen der BÄK zum Datenschutz im Praxisalltag, Darstellung unter technischen Aspekten BT - Vortrag im Rahmen der conhIT 2009, Berlin, 22.04.2009, zertifiziert von der Ärztekammer Berlin T2 - conhIT 2009, Berlin, 22.04.2009 KW - Arztpraxis KW - Datenschutz Y1 - 2009 ER - TY - JOUR A1 - Baumann, Timo A1 - Köhn, Arne A1 - Hennig, Felix T1 - The Spoken Wikipedia Corpus collection: Harvesting, alignment and an application to hyperlistening JF - Language Resources and Evaluation N2 - Spoken corpora are important for speech research, but are expensive to create and do not necessarily reflect (read or spontaneous) speech ‘in the wild’. We report on our conversion of the preexisting and freely available Spoken Wikipedia into a speech resource. The Spoken Wikipedia project unites volunteer readers of Wikipedia articles. There are initiatives to create and sustain Spoken Wikipedia versions in many languages and hence the available data grows over time. Thousands of spoken articles are available to users who prefer a spoken over the written version. We turn these semi-structured collections into structured and time-aligned corpora, keeping the exact correspondence with the original hypertext as well as all available metadata. Thus, we make the Spoken Wikipedia accessible for sustainable research. We present our open-source software pipeline that downloads, extracts, normalizes and text–speech aligns the Spoken Wikipedia. Additional language versions can be exploited by adapting configuration files or extending the software if necessary for language peculiarities. We also present and analyze the resulting corpora for German, English, and Dutch, which presently total 1005 h and grow at an estimated 87 h per year. The corpora, together with our software, are available via http://islrn.org/resources/684-927-624-257-3/. As a prototype usage of the time-aligned corpus, we describe an experiment about the preferred modalities for interacting with information-rich read-out hypertext. We find alignments to help improve user experience and factual information access by enabling targeted interaction. KW - Annotation KW - Eyes-free speech access KW - Found data KW - Robust text–speech alignment KW - Speech corpus KW - Spoken hypertext KW - Wikipedia Y1 - 2019 U6 - https://doi.org/10.1007/s10579-017-9410-y VL - 53 IS - 2 SP - 303 EP - 329 PB - Springer Nature ER - TY - CHAP A1 - Geislinger, Robert A1 - Milde, Benjamin A1 - Baumann, Timo A1 - Biemann, Chris T1 - Live Subtitling for BigBlueButton with Open-Source Software T2 - INTERSPEECH 2021: (Show & Tell Contribution), 30 August – 3 September, 2021, Brno, Czechia N2 - We present an open source plugin for live subtitling in the popular open source video conferencing software BigBlueBut-ton. Our plugin decodes each speaker’s audio stream separately and in parallel, thereby obliviating the need for speaker di-arization and seamlessly handling overlapped talk. Any Kaldi-compatible nnet3 model can be used with our plugin and we demonstrate it using freely available TDNN-HMM-based ASR models for English and German. Our subtitles can be used as they are (e.g., in loud environments) or can form the basis for further NLP processes. Our tool can also simplify the collection of remotely recorded multi-party dialogue corpora. KW - automatic speech recognition KW - automatic subtitles KW - computer-supported collaborative work KW - meeting transcription KW - multi-party dialogue KW - videoconferencing KW - VoIP Y1 - 2021 UR - https://www.isca-speech.org/archive/pdfs/interspeech_2021/geislinger21_interspeech.pdf SP - 3319 EP - 3320 CY - Brno, Czechia ER - TY - CHAP A1 - Baumann, Timo A1 - Hussein, Hussein A1 - Meyer-Sickendiek, Burkhard A1 - Elbeshausen, Jasper ED - Draude, Claude ED - Lange, Martin ED - Sick, Bernhard T1 - A Tool for Human-in-the-Loop Analysis and Exploration of (not only) Prosodic Classifications for Post-modern Poetry T2 - Informatik 2019 : 50 Jahre Gesellschaft für Informatik Workshop-Beiträge Fachtagung vom 23.-26. September 2019 in Kassel N2 - Data-based analyses are becoming more and more common in the Digital Humanities and tools are needed that focus human efforts on the most interesting and important aspects of exploration, analysis and annotation by using active machine learning techniques. We present our ongoing work on a tool that supports classification tasks for spoken documents (in our case: read-out post-modern poetry) using a neural networks-based classification backend and a web-based exploration and classification environment. KW - classification KW - data mining KW - free verse poetry KW - human-in-the-loop KW - rhythmical patterns Y1 - 2019 UR - https://dl.gi.de/bitstream/handle/20.500.12116/25047/paper03_08.pdf?sequence=1&isAllowed=y SN - 978-3-88579-689-3 SP - 151 EP - 156 PB - Gesellschaft für Informatik CY - Bonn ER - TY - CHAP A1 - Baumann, Timo A1 - Kennington, Casey A1 - Hough, Julian A1 - Schlangen, David T1 - Recognising Conversational Speech: What an Incremental ASR Should Do for a Dialogue System and How to Get There T2 - Proceedings of the International Workshop Series on Spoken Dialogue Systems Technology (IWSDS) 2016 N2 - Automatic speech recognition (ASR) is not only becoming increasingly accurate, but also increasingly adapted for producing timely, incremental output. However, overall accuracy and timeliness alone are insufficient when it comes to interactive dialogue systems which require stability in the output and responsivity to the utterance as it is unfolding. Furthermore, for a dialogue system to deal with phenomena such as disfluencies, to achieve deep understanding of user utterances these should be preserved or marked up for use by downstream components, such as language understanding, rather than be filtered out. Similarly, word timing can be informative for analyzing deictic expressions in a situated environment and should be available for analysis. Here we investigate the overall accuracy and incremental performance of three widely used systems and discuss their suitability for the aforementioned perspectives. From the differing performance along these measures we provide a picture of the requirements for incremental ASR in dialogue systems and describe freely available tools for using and evaluating incremental ASR. Y1 - 2016 ER - TY - CHAP A1 - Baumann, Timo A1 - Meyer-Sickendiek, Burkhard ED - Krauwer, Steven ED - Fišer, Darja T1 - Deep Learning meets Post-modern Poetry T2 - TwinTalks 2020: Understanding and Facilitating Collaboration in Digital Humanities 2020, proceedings of the Twin Talks 2 and 3 workshops at DHN 2020 and DH 2020, Ottawa Canada and Riga Latvia, July 23 and October 20, 2020 N2 - We summarize our project Rhythmicalizer in which we analyze a corpus of post-modern poetry in a combination of qualitative hermeneutical and computational methods, as we have run the project over the course of the past three years (and preparing it for some time before that). Interdisciplinary work is always challenging and we here focus on some of the highlights of our collaboration. KW - Literary Studies KW - Machine Learning KW - Meta-Research Y1 - 2020 UR - http://ceur-ws.org/Vol-2717/paper03.pdf SN - 1613-0073 SP - 30 EP - 36 PB - RWTH Aachen ER - TY - CHAP A1 - Baumann, Timo T1 - How a Listener Influences the Speaker T2 - Proceedings of Speech Prosody: Tokyo, Japan, 25-28 May 2020 N2 - Listeners typically provide feedback while listening to a speaker in conversation and thereby engage in the co-construction of the interaction. We analyze the influence of the listener on the speaker by investigating how her verbal feedback signals help in modeling the speaker's language. We find that feedback from the listener may help in modeling the speaker's language, whether through the listener's feedback as transcribed, or the acoustic signal directly. We find the largest positive effects for end of sentence as well as for pauses mid-utterance, but also effects that indicate we successfully model elaborations of ongoing utterances that may result from the presence or absence of listener feedback. KW - CNN KW - conversation KW - feedback KW - language model KW - RNNLM Y1 - 2020 U6 - https://doi.org/10.21437/SpeechProsody.2020-198 SP - 970 EP - 974 PB - ISCA ER - TY - GEN A1 - Meyer-Sickendiek, Burkhard A1 - Baumann, Timo A1 - Hussein, Hussein T1 - Requirements on the Punctuation Reconstruction for the Translation of Post-modern Poetry T2 - DHd 2020 ; Spielräume ; Digital Humanities zwischen Modellierung und Interpretation ; Konferenzabstracts ; Universität Paderborn 02. bis 06. März 2020 Y1 - 2020 SN - 978-3-945437-07-0 U6 - https://doi.org/10.5281/zenodo.4621722 PB - Universität Paderborn CY - Paderborn ER - TY - GEN A1 - Meyer-Sickendiek, Burkhard A1 - Hussein, Hussein A1 - Baumann, Timo T1 - From Fluency To Disfluency: Ranking Prosodic Features Of Poetry By Using Neural Networks T2 - Proceedings of the International Conference on Digital Humanities (DH 2019), Utrecht, the Netherlands 9-12 July, 2019 Y1 - 2019 U6 - https://doi.org/10.34894/EGZNMI ER - TY - CHAP A1 - Johannßen, Dirk A1 - Biemann, Chris A1 - Remus, Steffen A1 - Baumann, Timo A1 - Scheffer, David T1 - GermEval 2020 Task 1 on the Classification and Regression of Cognitive and Motivational style from Text T2 - Proceedings of the 5th SwissText & 16th KONVENS Joint Conference 2020 N2 - This paper describes the tasks, databases, baseline systems, and summarizes submissions and results for the GermEval 2020 Shared Task 1 on the Classification and Regression of Cognitive and Motivational Style from Text. This shared task is divided into two subtasks, a regression task, and a classification task. Subtask 1 asks participants to reproduce a ranking of students based on average aptitude indicators such as different high school grades and different IQ scores. The second subtask aims to classify so-called implicit motives, which are projective testing procedures that can reveal unconscious desires. Besides five implicit motives, the target labels of Subtask 2 also contain one of six levels that describe the type of self-regulation when acting out a motive, which makes this task a multiclass-classification with 30 target labels. 3 participants submitted multiple systems. Subtask 1 was solved (best r = .3701) mainly with non-neural systems and statistical language representations, submissions for Subtask 2 utilized neural approaches and word embeddings (best macro F1 = 70.40). Not only were the tasks solvable, analyses by the participants even showed connections to the implicit psychometrics theory and behavioral observations made by psychologists. This paper describes the tasks, databases, baseline systems, and summarizes submissions and results for the GermEval 2020 Shared Task 1 on the Classification and Regression of Cognitive and Motivational Style from Text. This shared task is divided into two subtasks, a regression task, and a classification task. Subtask 1 asks participants to reproduce a ranking of students based on average aptitude indicators such as different high school grades and different IQ scores. The second subtask aims to classify so-called implicit motives, which are projective testing procedures that can reveal unconscious desires. Besides five implicit motives, the target labels of Subtask 2 also contain one of six levels that describe the type of self-regulation when acting out a motive, which makes this task a multiclass-classification with 30 target labels. 3 participants submitted multiple systems. Subtask 1 was solved (best r =.3701) mainly with non-neural systems and statistical language representations, submissions for Subtask 2 utilized neural approaches and word embeddings (best macro F1 = 70.40). Not only were the tasks solvable, analyses by the participants even showed connections to the implicit psychometrics theory and behavioral observations made by psychologists. Y1 - 2020 UR - https://www.inf.uni-hamburg.de/en/inst/ab/lt/publications/2020-johannssen-germeval20-1-companion-paper.pdf SP - 1 EP - 10 CY - Zurich, Switzerland ER - TY - CHAP A1 - Twiefel, Johannes A1 - Baumann, Timo A1 - Heinrich, Stefan A1 - Wermter, Stefan T1 - Improving Domain-independent Cloud-based Speech Recognition with Domain-dependent Phonetic Post-processing T2 - AAAI 2014 – Twenty-Eighth AAAI Conference on Artificial Intelligence (AAAI-14), Québec, CA, July 27–31, 2014 N2 - Automatic speech recognition (ASR) technology has been developed to such a level that off-the-shelf distributed speech recognition services are available (free of cost), which allow researchers to integrate speech into their applications with little development effort or expert knowledge leading to better results compared with previously used open-source tools. Often, however, such services do not accept language models or grammars but process free speech from any domain. While results are very good given the enormous size of the search space, results frequently contain out-of-domain words or constructs that cannot be understood by subsequent domain-dependent natural language understanding (NLU) components. We present a versatile post-processing technique based on phonetic distance that integrates domain knowledge with open-domain ASR results, leading to improved ASR performance. Notably, our technique is able to make use of domain restrictions using various degrees of domain knowledge, ranging from pure vocabulary restrictions via grammars or N-Grams to restrictions of the acceptable utterances. We present results for a variety of corpora (mainly from human-robot interaction) where our combined approach significantly outperforms Google ASR as well as a plain open-source ASR solution. Y1 - 2014 UR - https://www2.informatik.uni-hamburg.de/wtm/publications/2014/TBHW14/Twiefel_AAAI2014_CR.pdf U6 - https://doi.org/10.1609/aaai.v28i1.8929 SP - 1529 EP - 1535 PB - Association for the Advancement of Artificial Intelligence ER - TY - JOUR A1 - Krüger, Norbert A1 - Fischer, Kerstin A1 - Manoonpong, Poramate A1 - Palinko, Oskar A1 - Bodenhagen, Leon A1 - Baumann, Timo A1 - Kjærum, Jens A1 - Rano, Ignacio A1 - Naik, Lakshadeep A1 - Juel, William Kristian A1 - Haarslev, Frederik A1 - Ignasov, Jevgeni A1 - Marchetti, Emanuela A1 - Langedijk, Rosalyn Melissa A1 - Kollakidou, Avgi A1 - Jeppesen, Kasper Camillus A1 - Heidtmann, Conny A1 - Dalgaard, Lars T1 - The SMOOTH-Robot: A Modular, Interactive Service Robot JF - Frontiers in Robotics and AI N2 - The SMOOTH-robot is a mobile robot that-due to its modularity-combines a relatively low price with the possibility to be used for a large variety of tasks in a wide range of domains. In this article, we demonstrate the potential of the SMOOTH-robot through three use cases, two of which were performed in elderly care homes. The robot is designed so that it can either make itself ready or be quickly changed by staff to perform different tasks. We carefully considered important design parameters such as the appearance, intended and unintended interactions with users, and the technical complexity, in order to achieve high acceptability and a sufficient degree of utilization of the robot. Three demonstrated use cases indicate that such a robot could contribute to an improved work environment, having the potential to free resources of care staff which could be allocated to actual care-giving tasks. Moreover, the SMOOTH-robot can be used in many other domains, as we will also exemplify in this article. KW - human–robot interaction KW - mobile robots KW - proactive control KW - service robots KW - socially aware navigation Y1 - 2021 U6 - https://doi.org/10.3389/frobt.2021.645639 VL - 8 PB - Frontiers ER - TY - CHAP A1 - Nayak, Shravan A1 - Baumann, Timo A1 - Bhattacharya, Supratik A1 - Karakanta, Alina A1 - Negri, Matteo A1 - Turchi, Marco ED - Truong, Khiet T1 - See me Speaking? Differentiating on Whether Words are Spoken On Screen or Off to Optimize Machine Dubbing T2 - ICMI '20 Companion: Companion Publication of the 2020 International Conference on Multimodal Interaction, 25.10.2020 - 29.10.2020; Virtual Event Netherlands N2 - Dubbing is the art of finding a translation from a source into a target language that can be lip-synchronously revoiced, i. e., that makes the target language speech appear as if it was spoken by the very actors all along. Lip synchrony is essential for the full-fledged reception of foreign audiovisual media, such as movies and series, as violated constraints of synchrony between video (lips) and audio (speech) lead to cognitive dissonance and reduce the perceptual quality. Of course, synchrony constraints only apply to the translation when the speaker's lips are visible on screen. Therefore, deciding whether to apply synchrony constraints requires an automatic method for detecting whether an actor's lips are visible on screen for a given stretch of speech or not. In this paper, we attempt, for the first time, to classify on- from off-screen speech based on a corpus of real-world television material that has been annotated word-by-word for the visibility of talking lips on screen. We present classification experiments in which we classify Y1 - 2020 SN - 9781450380027 U6 - https://doi.org/10.1145/3395035.3425640 SP - 130 EP - 134 PB - Association for Computing Machinery CY - New York,NY,United States ER - TY - CHAP A1 - Baumann, Timo ED - Weiss, Benjamin ED - Trouvain, Jürgen ED - Barkat-Defradas, Mélissa ED - Ohala, John J. T1 - Ranking and Comparing Speakers Based on Crowdsourced Pairwise Listener Ratings T2 - Voice attractiveness: Studies on Sexy, Likable, and Charismatic Speakers N2 - Speech quality and likability is a multi-faceted phenomenon consisting of a combination of perceptory features that cannot easily be computed nor weighed automatically. Yet, it is often easy to decide which of two voices one likes better, even though it would be hard to describe why, or to name the underlying basic perceptory features. Although likability is inherently subjective and individual preferences differ, generalizations are useful and there is often a broad intersubjective consensus about whether one speaker is more likeable than another. We present a methodology to efficiently create a likability ranking for many speakers from crowdsourced pairwise likability ratings which focuses manual rating effort on pairs of similar quality using an active sampling technique. Using this methodology, we collected pairwise likability ratings for many speakers (>220) from many raters (>160). We analyze listener preferences by correlating the resulting ranking with various acoustic and prosodic features. We also present a neural network that is able to model the complexity of listener preferences and the underlying temporal evolution of features. The recurrent neural network achieves remarkably high performance in estimating the pairwise decisions and an ablation study points toward the criticality of modeling temporal aspects in speech quality assessment. KW - Crowdsourcing KW - Found data KW - Likability ratings KW - Ranking KW - Sequence modelling KW - Speech quality Y1 - 2021 SN - 978-981-15-6626-4 SN - 978-981-15-6627-1 U6 - https://doi.org/10.1007/978-981-15-6627-1_14 SP - 263 EP - 279 PB - Springer CY - Singapore ER - TY - CHAP A1 - Hussein, Hussein A1 - Meyer-Sickendiek, Burkhard A1 - Baumann, Timo T1 - Free Verse and Beyond: How to Classify Post-modern Spoken Poetry T2 - Proceedings of Speech Prosody: Tokyo, Japan, 25-28 May 2020 N2 - This paper presents the classification of rhythmical patterns detected in post-modern spoken poetry by means of machine learning algorithms that use manually engineered features or automatically learnt representations. We used the world's largest corpus of spoken poetry from our partner lyrikline. We identified nine rhythmical patterns within a spectrum raging from a more fluent to a more disfluent poetic style. The text data analyzed by a statistical parser. Prosodic features of rhythmical patterns are identified by using the parser information. For the classification of rhythmical patterns, we used a neural networks-based approach which use text, audio, and pause information between poetic lines as features. Different combinations of features as well as the integration of feature engineering in the neural networks-based approach are tested. We compared the performance of both approaches (feature-based and neural network-based) using combinations of different features. The results show – by using the weighted average of f-measure for the evaluation – that the neural networks-based approach performed much better in classification of rhythmical patterns. The important improvement of the classification results lies in the use of the audio information. The integration of feature engineering in the neural networks-based approach yielded a very small result improvement. Y1 - 2020 U6 - https://doi.org/10.21437/SpeechProsody.2020-141 SP - 690 EP - 694 PB - ISCA ER - TY - PAT A1 - Ward, Nigel A1 - Baumann, Timo A1 - Karkhedkar, Shreyas A1 - Novick, David T1 - Dynamic control of voice codec data rate N2 - A method, system, and computer-usable non-transitory storage device for dynamic voice codec adaptation are disclosed. The voice codec adapts in real time to devote more bits to audio quality when it is most needed, and fewer bits to less important parts of utterances are disclosed. Dialog knowledge is utilized for compression opportunities to adjust the bitrate moment-by-moment, based on the inferred value of each frame. Frame importance and appropriate transmission fidelity is predicted based on prosodic features and models of dialog dynamics. This technique provides the same communications quality with less spectrum needs, fewer antennas, and less battery drain. Y1 - 2015 UR - https://assignment.uspto.gov/patent/index.html#/patent/search/resultAssignor?assignorName=BAUMANN,%20TIMO ER - TY - JOUR A1 - Fischer, Kerstin A1 - Bodenhagen, Leon A1 - Krüger, Norbert A1 - Andersen, Morten Østergaard A1 - Baumann, Timo T1 - Trinvise og delte strategier for kontrol af velfærdsrobotter JF - Medicoteknik Y1 - 2015 UR - http://ipaper.ipapercms.dk/TechMedia/Medicoteknik/2015/1/?Page=11 VL - 2 IS - 1 SP - 11 EP - 13 PB - TechMedia ER - TY - CHAP A1 - Kennington, Casey A1 - Kousidis, Spyros A1 - Baumann, Timo A1 - Buschmeier, Hendrik A1 - Kopp, Stefan A1 - Schlangen, David ED - Miller, Erika ED - Wu, Yuqing T1 - Better Driving and Recall When In-car Information Presentation Uses Situationally-Aware Incremental Speech Output Generation T2 - Proceedings of the 6th International Conference on Automotive User Interfaces and Interactive Vehicular Applications, AutomotiveUI '14, Seattle WA, USA, September 17 - 19, 2014 N2 - It is established that driver distraction is the result of sharing cognitive resources between the primary task (driving) and any other secondary task. In the case of holding conversations, a human passenger who is aware of the driving conditions can choose to interrupt his speech in situations potentially requiring more attention from the driver, but in-car information systems typically do not exhibit such sensitivity. We have designed and tested such a system in a driving simulation environment. Unlike other systems, our system delivers information via speech (calendar entries with scheduled meetings) but is able to react to signals from the environment to interrupt when the driver needs to be fully attentive to the driving task and subsequently resume its delivery. Distraction is measured by a secondary short-term memory task. In both tasks, drivers perform significantly worse when the system does not adapt its speech, while they perform equally well to control conditions (no concurrent task) when the system intelligently interrupts and resumes. Y1 - 2014 UR - 978-1-4503-3212-5 U6 - https://doi.org/10.1145/2667317.2667332 SP - 1 EP - 7 PB - ACM CY - New York, NY ER - TY - CHAP A1 - Baumann, Timo T1 - Partial Representations Improve the Prosody of Incremental Speech Synthesis T2 - Interspeech 2014, Singapore, 14-18 September 2014 N2 - When humans speak, they do not plan their full utterance inall detail before beginning to speak, nor do they speak piece-by-piece and ignoring their full message – instead humans usepartial representations in which they fill in the missing partsas the utterance unfolds. Incremental speech synthesizers, incontrast, have not yet made use of partial representations and theinformation contained there-in.We analyze the quality of prosodic parameter assignments(pitch and duration) generated from partial utterance specifi-cations (substituting defaults for missing features) in order todetermine the requirements that symbolic incremental prosodymodelling should meet. We find that broader, higher-level infor-mation helps to improve prosody even if lower-level informationabout the near future is yet unavailable. Furthermore, we findthat symbolic phrase-level or utterance-level information is mosthelpful towards the end of the phrase or utterance, respectively,that is, when this information is becoming available even in theincremental case. Thus, the negative impact of incremental pro-cessing can be minimized by using partial representations thatare filled in incrementally. KW - incremental processing KW - prosody KW - speech synthesis KW - spoken dialogue systems KW - simultaneous interpreting Y1 - 2014 U6 - https://doi.org/10.21437/Interspeech.2014-199 SP - 2932 EP - 2936 ER - TY - CHAP A1 - Kousidis, Spyros A1 - Kennington, Casey A1 - Baumann, Timo A1 - Buschmeier, Hendrik A1 - Kopp, Stefan A1 - Schlangen, David ED - Ali Salah, Albert T1 - A Multimodal In-Car Dialogue System That Tracks The Driver's Attention T2 - Proceedings of the 16th International Conference on Multimodal Interaction, ICMI '14, November 12 - 16 2014, Istanbul N2 - When a passenger speaks to a driver, he or she is co-located with the driver, is generally aware of the situation, and can stop speaking to allow the driver to focus on the driving task. In-car dialogue systems ignore these important aspects, making them more distracting than even cell-phone conversations. We developed and tested a "situationally-aware" dialogue system that can interrupt its speech when a situation which requires more attention from the driver is detected, and can resume when driving conditions return to normal. Furthermore, our system allows driver-controlled resumption of interrupted speech via verbal or visual cues (head nods). Over two experiments, we found that the situationally-aware spoken dialogue system improves driving performance and attention to the speech content, while driver-controlled speech resumption does not hinder performance in either of these two tasks Y1 - 2014 SN - 9781450328852 U6 - https://doi.org/10.1145/2663204.2663244 SP - 26 EP - 33 PB - ACM CY - New York, NY ER - TY - CHAP A1 - Kousidis, Spyros A1 - Kennington, Casey A1 - Baumann, Timo A1 - Buschmeier, Hendrik A1 - Kopp, Stefan A1 - Schlangen, David T1 - Situationally Aware In-Car Information Presentation Using Incremental Speech Generation: Safer, and More Effective T2 - Proceedings of the EACL 2014 Workshop on Dialogue in Motion, Gothenburg, Sweden N2 - Holding non-co-located conversationswhile driving is dangerous (Horrey and- Wickens, 2006; Strayer et al., 2006), much more so than conversations with physically present, “situated” interlocutors (Drews et al., 2004). In-car dialogue systems typically resemble non-co-located conversations more, and share their negative impact (Strayer et al., 2013). We implemented and tested a simple strategy for making in-car dialogue systems aware of the driving situation, by giving them the capability to interrupt themselves when a dangerous situation is detected,and resume when over. We show that this improves both driving performance and recall of system-presented information, compared to a non-adaptive strategy. KW - in-car information presentation KW - incremental speech generation KW - situation awareness Y1 - 2014 U6 - https://doi.org/10.3115/v1/W14-0212 SP - 68 EP - 72 PB - Association for Computational Linguistics ER - TY - CHAP A1 - Baumann, Timo A1 - Siegert, Ingo ED - Alt, Florian ED - Schneegass, Stefan ED - Hornecker, Eva T1 - Prosodic addressee-detection : ensuring privacy in always-on spoken dialog systems T2 - Tagungsband Mensch und Computer (MuC'20): 06.09.2020 - 09.09.2020, Magdeburg N2 - We analyze the addressee detection task for complexity-identical dialog for both human conversation and device-directed speech. Our recurrent neural model performs at least as good as humans, who have problems with this task, even native speakers, who profit from the relevant linguistic skills. We perform ablation experiments on the features used by our model and show that fundamental frequency variation is the single most relevant feature class. Therefore, we conclude that future systems can detect whether they are addressed based only on speech prosody which does not (or only to a very limited extent) reveal the content of conversations not intended for the system. KW - addressee detection KW - complexity-identical human-computer interaction KW - computational paralinguistics KW - fundamental frequency variation KW - recurrent neural network Y1 - 2020 SN - 9781450375405 U6 - https://doi.org/10.1145/3404983.3410021 SP - 195 EP - 198 PB - Association for Computing Machinery CY - New York, NY, United States ER - TY - CHAP A1 - Karakanta, Alina A1 - Bhattacharya, Supratik A1 - Nayak, Shravan A1 - Baumann, Timo A1 - Negri, Matteo A1 - Turchi, Marco ED - Scott, Donia ED - Bel, Nuria ED - Zong, Chengqing T1 - The Two Shades of Dubbing in Neural Machine Translation T2 - Proceedings of the 28th International Conference on Computational Linguistics (COLING 2020): Barcelona, Spain (Online) N2 - Dubbing has two shades; synchronisation constraints are applied only when the actor’s mouth is visible on screen, while the translation is unconstrained for off-screen dubbing. Consequently, different synchronisation requirements, and therefore translation strategies, are applied depending on the type of dubbing. In this work, we manually annotate an existing dubbing corpus (Heroes) for this dichotomy. We show that, even though we did not observe distinctive features between on- and off-screen dubbing at the textual level, on-screen dubbing is more difficult for MT (-4 BLEU points). Moreover, synchronisation constraints dramatically decrease translation quality for off-screen dubbing. We conclude that, distinguishing between on-screen and off-screen dubbing is necessary for determining successful strategies for dubbing-customised Machine Translation. Y1 - 2020 U6 - https://doi.org/10.18653/v1/2020.coling-main.382 SP - 4327 EP - 4333 PB - International Committee on Computational Linguistics CY - Stroudsburg, PA, USA ER - TY - CHAP A1 - Fischer, Kerstin A1 - Naik, Lakshadeep A1 - Langedijk, Rosalyn Melissa A1 - Baumann, Timo A1 - Jelínek, Matouš A1 - Palinko, Oskar ED - Bethel, Cindy ED - Paiva, Ana T1 - Initiating Human-Robot Interactions Using Incremental Speech Adaptation T2 - HRI '21 Companion, Companion of the 2021 ACM/IEEE International Conference on Human-Robot Interaction: March 8 - 11, 2021, Boulder CO, USA N2 - In this paper, we present a study in which a robot initiates interactions with people passing by in an in-the-wild scenario. The robot adapts the loudness of its voice dynamically to the distance of the respective person approached, thus indicating who it is talking to. It furthermore tracks people based on information on body orientation and eye gaze and adapts the text produced based on people's distance autonomously. Our study shows that the adaptation of the loudness of its voice is perceived as personalization by the participants and that the likelihood that they stop by and interact with the robot increases when the robot incrementally adjusts its behavior. KW - gaze KW - incrementalit KW - initiating interaction KW - personalization KW - voice Y1 - 2021 SN - 9781450382908 U6 - https://doi.org/10.1145/3434074.3447205 SP - 421 EP - 425 PB - Association for Computing Machinery CY - New York, NY ER - TY - CHAP A1 - Pouget, Maël A1 - Hueber, Thomas A1 - Bailly, Gérard A1 - Baumann, Timo T1 - HMM training strategy for incremental speech synthesis T2 - Interspeech 2015, Dresden, Germany, 6-10 September 2015 N2 - Incremental speech synthesis aims at delivering the synthetic voice while the sentence is still being typed. One of the main challenges is the online estimation of the target prosody from a partial knowledge of the sentence's syntactic structure. In the context of HMM-based speech synthesis, this typically results in missing segmental and suprasegmental features, which describe the linguistic context of each phoneme. This study describes a voice training procedure which integrates explicitly a potential uncertainty on some contextual features. The proposed technique is compared to a baseline approach (previously published), which consists in substituting a missing contextual feature by a default value calculated on the training set. Both techniques were implemented in a HMM-based Text-To-Speech system for French, and compared using objective and perceptual measurements. Experimental results show that the proposed strategy outperforms the baseline technique for this language. KW - HMM-based speech synthesis KW - incremental KW - TTS KW - HTS KW - prosody Y1 - 2015 U6 - https://doi.org/10.21437/Interspeech.2015-304 SP - 1201 EP - 1205 PB - ISCA ER - TY - CHAP A1 - Meyer-Sickendiek, Burkhard A1 - Hussein, Hussein A1 - Baumann, Timo ED - Eibl, Maximilian ED - Gaedke, Martin T1 - Rhythmicalizer: Data Analysis for the Identification of Rhythmic Patterns in Readout Poetry T2 - INFORMATIK 2017, Tagung vom 25.- 29. September 2017 in Chemnitz T2 - GI-Edition Lecture notes in informatics. Proceedings ; volume P-275 N2 - The most important development in modern and postmodern poetry is the replacement of traditional meter by new rhythmical patterns. Ever since Walt Whitman's Leaves of Grass (1855), modern (nineteenth-to twenty-first-century) poets have been searching for novel forms of prosody, accent, rhythm, and intonation. Along with the rejection of older metrical units such as the iamb or trochee, a structure of lyrical language was developed that renounced traditional forms like rhyme and meter. This development is subsumed under the term free verse prosody. Our project will test this theory by applying machine learning or deep learning techniques to a corpus of modern and postmodern poems as read aloud by the original authors. To this end, we examine “lyrikline”, the most famous online portal for spoken poetry. First, about 17 different patterns being characteristic for the lyrikline-poems have been identified by the philological scholar of this project. This identification was based on a certain philological method including three different steps: a) grammetrical ranking; b) rhythmic phrasing; and c) mapping rubato and prosodic phrasing. In this paper we will show how to combine this philological and a digital analysis by using the prosody detection available in speech processing technology. In order to analyse the data, we want to use different tools for the following tasks: PoS-tagging, alignment, intonation, phrases and pauses, and tempo. We also analyzed the lyrikline-data by identifying the occurrence of the mentioned patterns. This analysis is a first step towards an automatic classification based on machine learning or deep learning techniques. Y1 - 2017 SN - 978-3-88579-669-5 U6 - https://doi.org/10.18420/in2017_218 SP - 2189 EP - 2200 PB - Gesellschaft für Informatik CY - Bonn ER - TY - CHAP A1 - Baumann, Timo A1 - Meyer-Sickendiek, Burkhard T1 - Large-scale Analysis of Spoken Free-verse Poetry T2 - Proceedings of the Workshop on Language Technology Resources and Tools for Digital Humanities, Osaka, Japan, December 11-17 2016 N2 - Most modern and post-modern poems have developed a post-metrical idea of lyrical prosody that employs rhythmical features of everyday language and prose instead of a strict adherence to rhyme and metrical schemes. This development is subsumed under the term free verse prosody. We present our methodology for the large-scale analysis of modern and post-modern poetry in both their written form and as spoken aloud by the author. We employ language processing tools to align text and speech, to generate a null-model of how the poem would be spoken by a naïve reader, and to extract contrastive prosodic features used by the poet. On these, we intend to build our model of free verse prosody, which will help to understand, differentiate and relate the different styles of free verse poetry. We plan to use our processing scheme on large amounts of data to iteratively build models of styles, to validate and guide manual style annotation, to identify further rhythmical categories, and ultimately to broaden our understanding of free verse poetry. In this paper, we report on a proof-of-concept of our methodology using smaller amounts of poems and a limited set of features. We find that our methodology helps to extract differentiating features in the authors’ speech that can be explained by philological insight. Thus, our automatic method helps to guide the literary analysis and this in turn helps to improve our computational models. Y1 - 2016 UR - https://aclanthology.org/W16-4017 SP - 125 EP - 130 PB - The COLING 2016 Organizing Committee ER - TY - CHAP A1 - Köhn, Arne A1 - Baumann, Timo T1 - Predictive Incremental Parsing Helps Language Modeling T2 - Proceedings of COLING 2016, the 26th International Conference on Computational Linguistics: Technical Papers, Osaka, Japan N2 - Predictive incremental parsing produces syntactic representations of sentences as they are produced, e.g. by typing or speaking. In order to generate connected parses for such unfinished sentences, upcoming word types can be hypothesized and structurally integrated with already realized words. For example, the presence of a determiner as the last word of a sentence prefix may indicate that a noun will appear somewhere in the completion of that sentence, and the determiner can be attached to the predicted noun. We combine the forward-looking parser predictions with backward-looking N-gram histories and analyze in a set of experiments the impact on language models, i.e. stronger discriminative power but also higher data sparsity. Conditioning N-gram models, MaxEnt models or RNN-LMs on parser predictions yields perplexity reductions of about 6%. Our method (a) retains online decoding capabilities and (b) incurs relatively little computational overhead which sets it apart from previous approaches that use syntax for language modeling. Our method is particularly attractive for modular systems that make use of a syntax parser anyway, e.g. as part of an understanding pipeline where predictive parsing improves language modeling at no additional cost. Y1 - 2016 UR - https://aclanthology.org/C16-1026 SP - 268 EP - 277 PB - The COLING 2016 Organizing Committee ER - TY - CHAP A1 - Rohde, Marcel A1 - Baumann, Timo T1 - Navigating the Spoken Wikipedia T2 - Proceedings of the 7th Workshop on Speech and Language Processing for Assistive Technologies (SLPAT 2016) N2 - The Spoken Wikipedia project unites volunteer readers of encyclopedic entries. Their recordings make encyclopedic knowledge accessible to persons who are unable to read (out of alexia, visual impairment, or because their sight is currently occupied, e. g. while driving). However, on Wikipedia, recordings are available as raw audio files that can only be consumed linearly, without the possibility for targeted navigation or search. We present a reading application which uses an alignment between the recording, text and article structure and which allows to navigate spoken articles, through a graphical or voice-based user interface (or a combination thereof). We present the results of a usability study in which we compare the two interaction modalities. We find that both types of interaction enable users to navigate articles and to find specific information much more quickly compared to a sequential presentation of the full article. In particular when the VUI is not restricted by speech recognition and understanding issues, this interface is on par with the graphical interface and thus a real option for browsing the Wikipedia without the need for vision or reading. KW - Mensch-Maschine-Interaktion KW - Sprechschnittstelle KW - Sprachdialogverarbeitung Y1 - 2016 U6 - https://doi.org/10.21437/SLPAT.2016-2 SP - 9 EP - 13 ER - TY - CHAP A1 - Baumann, Timo A1 - Lindner, Felix ED - Tapus, Adriana ED - André, Elisabeth ED - Martin, Jean-Claude T1 - Incremental Speech Production for Polite and Natural Personal-Space Intrusion T2 - Social robotics : 7th International Conference, ICSR 2015, Paris, France, October 26-30, 2015, Proceedings T2 - Lecture notes in Computer science ; 9388 N2 - We propose to use a model of personal space to initiate communication while passing a human thereby acknowledging that humans are not just a special kind of obstacle to be avoided but potential interaction partners. As a simple form of interaction, our system communicates an apology while closely passing a human. To this end, we present a software architecture that integrates a social-spaces knowledge base and a component for incremental speech production. Incrementality ensures that the robot’s utterance can be adapted to fit the developing situation in a natural way. Observer ratings show that personal-space intrusion is perceived as both natural and polite if the robot has the capability to utter and adapt an apology in an incremental way whereas it is perceived as unfriendly if the robot intrudes personal space without saying anything. Moreover, the robot is perceived as less natural if it does not adapt. Y1 - 2015 SN - 978-3-319-25553-8 U6 - https://doi.org/10.1007/978-3-319-25554-5_8 SP - 72 EP - 82 PB - Springer CY - Cham ER - TY - CHAP A1 - Baumann, Timo A1 - Lindner, Felix T1 - Towards a Social Robot that Incrementally Justifies Personal-Space Intrusion T2 - Proceedings of the Workshop Towards a Framework for Joint Action 2015 N2 - Robots should appropriately give reasons for their actions when these actions affect a human’s action or goal space. Communicating reasons may help the human understand the robot’s intents and may initiate joint action, i. e., accepting the robot’s goals and cooperating on the robot’s actions. However, to be efficient, the communication of reasons should be limited to the necessary rather than to completeness, conforming to the Gricean Maxim of Quantity. Furthermore, what is necessary only becomes apparent as the situation evolves and hence, for seamless interaction, ongoing utterances must be adapted as they happen. We present a system that flexibly gives reasons in a reduced setting in which the robot needs to intrude a human’s personal space in order to reach its goal. Y1 - 2015 UR - https://fja.sciencesconf.org/conference/fja/TB_FL_joint_action_abstract.pdf ER - TY - CHAP A1 - Baumann, Timo T1 - Decision Tree Usage for Incremental Parametric Speech Synthesis T2 - Proceedings of the International Conference on Acoustics, Speech, and Signal Processing (ICASSP) 2014, 4-9 May 2014, Florence, Italy N2 - Human speakers plan and deliver their utterances incrementally, piece-by-piece, and it is obvious that their choice regarding phonetic details (and the details' peculiarities) is rarely determined by globally optimal solutions. In contrast, parametric speech synthesizers use a full-utterance context when optimizing vocoding parameters and when determing HMM states. Apart from being cognitively implausible, this impedes incremental use-cases, where the future context is often at least partially unavailable. This paper investigates the `locality' of features in parametric speech synthesis voices and takes some missing steps towards better HMM state selection and prosody modelling for incremental speech synthesis. KW - Speech Synthesis KW - Incremental Processing KW - HMM Synthesis KW - Interactivity KW - Spoken Dialogue Systems Y1 - 2014 U6 - https://doi.org/10.1109/ICASSP.2014.6854316 SP - 3847 EP - 3851 PB - IEEE ER - TY - CHAP A1 - Köhn, Arne A1 - Stegen, Florian A1 - Baumann, Timo T1 - Mining the Spoken Wikipedia for Speech Data and Beyond T2 - Proceedings of the Tenth International Conference on Language Resources and Evaluation (LREC'16) N2 - We present a corpus of time-aligned spoken data of Wikipedia articles as well as the pipeline that allows to generate such corpora for many languages. There are initiatives to create and sustain spoken Wikipedia versions in many languages and hence the data is freely available, grows over time, and can be used for automatic corpus creation. Our pipeline automatically downloads and aligns this data. The resulting German corpus currently totals 293h of audio, of which we align 71h in full sentences and another 86h of sentences with some missing words. The English corpus consists of 287h, for which we align 27h in full sentence and 157h with some missing words. Results are publically available. KW - Spoken Wikipedia KW - Long Audio Alignment KW - Speech Resource Y1 - 2016 UR - https://aclanthology.org/L16-1735 SP - 4644 EP - 4647 PB - European Language Resources Association (ELRA) ER - TY - CHAP A1 - Hussein, Hussein A1 - Meyer-Sickendiek, Burkhard A1 - Baumann, Timo T1 - Automatic Detection of Enjambment in German Readout Poetry T2 - Proceedings of Speech Prosody, 2018, Poznán N2 - One of the most important patterns in ancient as well as modern poetry is the enjambment, the continuation of a sentence beyond the end of a line, couplet, or stanza. The paper reports first activities towards the development of a digital tool to analyze the accentuation of poetic enjambments in readout poetry. The aim in this contribution is to recognize two forms of enjambment (emphasized and unemphasized) in poems using audio and text data. We use data from lyrikline which is a major online portal for spoken poetry whereas poems are read aloud by the original authors. We identified by hermeneutical means based on literary analysis a total of 69 poems being characteristic for the use of enjambments in modern and postmodern German poetry and train classifiers to differentiate the emphasized/unemphasized ategorization. A remarkable result of our automated analyses (and to our knowledge the first data-driven analysis of this kind) is the identification of a cultural difference in the accentuation of enjambments: statistically speaking, poets from the former GDR tend to emphasize the enjambment, whereas poets from the FRG do not. We use features derived from speech-to-text alignment and statistical parsing information such as pause lengths, number of lines with verbs, and number of lines with punctuation. The best classification results, calculated by the F-measure, for the both types of enjambment (emphasized/unemphasized) is 0.69. KW - modern and postmodern poetry KW - free verse prosody KW - emphasized and unemphasized enjambment Y1 - 2018 U6 - https://doi.org/10.21437/SpeechProsody.2018-67 SP - 329 EP - 333 PB - ISCA ER - TY - CHAP A1 - Baumann, Timo A1 - Hussein, Hussein A1 - Meyer-Sickendiek, Burkhard T1 - Analysing the Focus of a Hierarchical Attention Network: the Importance of Enjambments When Classifying Post-modern Poetry T2 - Proceedings of Interspeech, 2018, Hyderabad N2 - After overcoming the traditional metrics, modern and postmodern poetry developed a large variety of ‘free verse prosodies’ that falls along a spectrum from a more fluent to a more disfluent and choppy style. We present a method, grounded in philological analysis and theories on cognitive (dis)fluency, to analyze this ‘free verse spectrum’ into six classes of poetic styles as well as to differentiate three types of poems with enjambments. We use a model for automatic prosodic analysis of spoken free verse poetry which uses deep hierarchical attention networks to integrate the source text and audio and predict the assigned class. We then analyze and fine-tune the model with a particular focus on enjambments and in two ways: we drill down on classification performance by analyzing whether the model focuses on similar traits of poems as humans would, specifically, whether it internally builds a notion of enjambment. We find that our model is similarly good as humans in finding enjambments; however, when we employ the model for classifying enjambment-dominated poem types, it does not pay particular attention to those lines. Adding enjambment labels to the training only marginally improves performance, indicating that all other lines are similarly informative for the model. KW - digital humanities KW - free verse poetry KW - prosodic analysis KW - enjambment detection KW - hierarchical attention network Y1 - 2018 U6 - https://doi.org/10.21437/Interspeech.2018-2533 SP - 2162 EP - 2166 ER - TY - CHAP A1 - Meyer-Sickendiek, Burkhard A1 - Hussein, Hussein A1 - Baumann, Timo ED - Burghardt, M. ED - Müller-Birn, C. T1 - Analysis and Classification of Prosodic Styles in Post-modern Spoken Poetry T2 - INF-DH 2018 Workshopband N2 - We present our research on computer-supported analysis of prosodic styles in post-modern poetry. Our project is unique in making use of both the written as well as the spoken form of the poem as read by the original author. In particular, we use speech and natural language processing technology to align speech and text and to perform textual analyses. We then explore, based on literary theory, the quantitative value of various types of features in differentiating various prosodic classes of post-modern poetry using machine-learning techniques. We contrast this feature-driven approach with a theoretically less informed neural networks-based approach and explore the relative strengths of both models, as well as how to integrate higher-level knowledge into the NN. In this paper, we give an overview of our project, our approach, and particularly focus on the challenges encountered and lessons learned in our interdisciplinary endeavour. The classification results of the rhythmical patterns (six classes) using NN-based approaches are better than by feature-based approaches. KW - modern and postmodern poetry KW - free verse prosody KW - rhythmical patters Y1 - 2018 U6 - https://doi.org/10.18420/infdh2018-09 PB - Gesellschaft für Informatik e.V ER - TY - CHAP A1 - Baumann, Timo T1 - Large-Scale Speaker Ranking from Crowdsourced Pairwise Listener Ratings T2 - Interspeech 2017 : 20-24 August 2017 N2 - Speech quality and likability is a multi-faceted phenomenon consisting of a combination of perceptory features that cannot easily be computed nor weighed automatically. Yet, it is often easy to decide which of two voices one likes better, even though it would be hard to describe why, or to name the underlying basic perceptory features. Although likability is inherently subjective and individual preferences differ frequently, generalizations are useful and there is often a broad intersubjective consensus about whether one speaker is more likable than another. However, breaking down likability rankings into pairwise comparisons leads to a quadratic explosion of rating pairs. We present a methodology and software to efficiently create a likability ranking for many speakers from crowdsourced pairwise likability ratings. We collected pairwise likability ratings for many (>220) speakers from many raters (>160) and turn these ratings into one likability ranking. We investigate the resulting speaker ranking stability under different conditions: limiting the number of ratings and the dependence on rater and speaker characteristics. We also analyze the ranking wrt. acoustic correlates to find out what factors influence likability. We publish our ranking and the underlying ratings in order to facilitate further research. KW - ranking KW - speech quality KW - likability KW - found data KW - ratings KW - crowd-sourcing Y1 - 2017 U6 - https://doi.org/10.21437/Interspeech.2017-1697 SP - 2262 EP - 2266 PB - ISCA ER - TY - CHAP A1 - Koller, Alexander A1 - Baumann, Timo A1 - Köhn, Arne T1 - DialogOS: Simple and extensible dialog modeling T2 - Proceedings of Interspeech: Hyderabad, India 2-6 September 2018 N2 - We present the open-source extensible dialog manager DialogOS. DialogOS features simple finite-state based dialog management (which can be expanded to more complex DM strategies via a full-fledged scripting language) in combination with integrated speech recognition and synthesis in multiple languages. DialogOS runs on all major platforms, provides a simple-to-use graphical interface and can easily be extended via well-defined plugin and client interfaces, or can be integrated server-side into larger existing software infrastructures. We hope that DialogOS will help foster research and teaching given that it lowers the bar of entry into building and testing spoken dialog systems and provides paths to extend one’s system as development progresses. Y1 - 2018 UR - https://edoc.sub.uni-hamburg.de/informatik/volltexte/2018/246/pdf/koller_dialogOS.pdf CY - Hyderabad, India ER - TY - CHAP A1 - Kirsch, Kolja A1 - Steinicke, Frank A1 - Baumann, Timo T1 - Entwicklung und Evaluierung einer Notenwender-App für Klaviernoten T2 - Mensch und Computer 2016 - Tagungsband, 4. - 7. September 2016, Aachen N2 - Das ständige Umblättern von Noten ist für Musiker ein wiederkehrendes Problem. Dieses wird häufig durch einen Assistenten des Musikers, dem sogenannten Notenwender, gelöst. Diese Unterstützung haben allerdings viele Musiker nur selten während des Übens. In diesem Artikel stellen wir eine Anwendung für mobile Geräte vor, die auf verschiedene Arten das Umblättern von Klavierpartituren unterstützt. In einer Studie mit professionellen Musikern und Klavierschülern wurden diese Arten gegeneinander abgewogen. Die Ergebnisse zeigen auf, dass computer-unterstütztes Blättern Vorteile gegenüber herkömmlichem Blättern hat. Y1 - 2016 U6 - https://doi.org/10.18420/muc2016-mci-0159 PB - Gesellschaft für Informatik e.V. CY - Aachen ER - TY - CHAP A1 - Weber, Karsten ED - Daub, H. T1 - Erkenntniswege in der Wissenschaft T2 - Grenzen menschlicher Existenz. Klimawandel - Menschenwürde - Unschärferelation Y1 - 2008 UR - https://www.researchgate.net/publication/256474612_Erkenntniswege_in_der_Wissenschaft PB - Michael-Imhof CY - Fulda ER - TY - JOUR A1 - Vogt, I. A1 - Hoch, E. A1 - Thomasius, R. A1 - Winkler, Klaudia T1 - Frauen und Alkoholabhängigkeit: Aktueller Forschungsstand zur Effektivität psychotherapeutischer Behandlungen als Grundlagen für Behandlungsempfehlungen JF - Suchttherapie N2 - Die neuen deutschen S3-Leitlinien „Screening, Diagnose und Behandlung alkoholbezogener Störungen“ (AWMF 076001) enthalten eine Reihe von Hinweisen auf geschlechtsspezifische Differenzen hinsichtlich des Screenings, der Diagnostik und vor allem der Behandlung alkoholbezogener Störungen. In einem Unterkapitel werden die Ergebnisse einer breit angelegten Literatursuche nach (randomisierten) kontrollierten Studien zusammengefasst mit Frauen als Studiensubjekte. Zur Behandlung von schwangeren Frauen mit leichten bis mittleren alkoholbezogenen Störungen empfehlen sich Kurzinterventionen. Für Schwangere mit schweren alkoholbezogenen Störungen sollte eine stationäre Behandlung angestrebt werden bzw. eine Begleitung durch die Schwangerschaft und die Zeit nach der Geburt durch Hausbesuche durch eine Fachkraft. Kurzeitinterventionen haben sich auch bei nicht-schwangeren Frauen mit leichten bis mittleren alkoholbezogenen Störungen bewährt. Frauen, bei denen eine Posttraumatische Belastungsstörungen sowie eine Substanzkonsum-Störung diagnostiziert worden ist, sollten eine integrierte Behandlung erhalten (wie z. B. im Programm „Sicherheit finden“). In gewissem Umfang bewährt haben sich kognitive Paartherapien sowie ambulante oder stationäre Settings mit Frauengruppen. Das gilt insbesondere für Frauen, die eine Paarbehandlung oder eine Behandlung in einer Frauengruppe wünschen. Mehr und bessere Forschungen sind dringend notwendig, um die Angebote für Frauen mit Substanzkonsum-Störungen zu verbessern. T2 - Women and Alcohol Dependence: Current Knowledge on Efficient Psychotherapeutic Treatment as Basis for Guidelines KW - alcohol-related disorders KW - BEHAVIORAL COUPLES THERAPY KW - BRIEF INTERVENTIONS KW - CONSUMPTION KW - DRUG-USE KW - GENDER KW - I TRIAL KW - MOTHERS KW - pregnant women KW - PRIMARY-CARE KW - RANDOMIZED CLINICAL-TRIAL KW - treatments KW - USE DISORDERS KW - women Y1 - 2015 U6 - https://doi.org/10.1055/s-0034-1396795 VL - 16 IS - 3 SP - 110 EP - 117 PB - Thieme ER - TY - RPRT A1 - Hu, Rongbo A1 - Kabouteh, Amir A1 - Schlandt, Marcel A1 - Güttler, Jörg A1 - Linner, Thomas A1 - Kozak, D. A1 - Walter, B. A1 - Schäpers, Barbara A1 - Randriambelonoro, Mirana E. T1 - Partly functional / functional mock-ups and prototypes of Personalised Intelligent Interior Units (PI²Us) BT - Deliverable submitted as part of the EU H2020 research project REACH (Responsive Engagement of the Elderly promoting Activity and Customized Healthcare), Grant Agreement No. 690425 (Report number: REACH2020 Deliverable D24) N2 - This deliverable report examines the outcome of the construction of functional or partly functional prototypes or mock-ups of Personalized Interior Intelligent Environment Units (PI²Us) for demonstration and testing purposes, associated with Task T5.4. The first part of this document will give an overview of the relation of this task to other tasks of WP5, other work packages, and the larger framework of the REACH project. The second part sets out the details of the progressive development from early concepts to the current prototyping stage. Moreover, the subsequent lab-based testing is described in the third part of the report. This includes both already carried out and planned testing activities for either early stage validation or final demonstration in a naturalistic test environment. Finally, part four summarizes the results and puts the different prototypes in perspective to the respective touchpoints and the overall REACH engine functionality. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 690425. Y1 - 2019 UR - https://www.researchgate.net/publication/333324604_Partly_functional_functional_mock-ups_and_prototypes_of_Personalised_Intelligent_Interior_Units_PIUs N1 - REACH2020: Responsive Engagement of the Elderly promoting Activity and Customized Healthcare (Horizon 2020, PHC track) ER - TY - JOUR A1 - Saßmannshausen, Sean Patrick A1 - Gladbach, Stefan T1 - Entrepreneurship Education between Theory and Practice: Reflections on Case Study Based Teaching JF - Journal of Asia Entrepreneurship and Sustainability N2 - This article suggests an extended use of the case study methodology in teaching entrepreneurship in Germany. In Germany, the traditional form of formal lectures seems still to be predominant in Entrepreneurship Education. Case studies as a teaching methodology can serve the many dualities of Entrepreneurship Education: heterogeneous vs. homogeneous prior knowledge of participants, participants’ divergent interests in entrepreneurship courses, from simply collecting credits to theoretical interest to practical and urgent interest in practical skills for starting a venture. The advantages of case study based teaching methodology in transmitting theoretical knowledge as well as practical skills in entrepreneurship is described, based on the evidence in state of the art entrepreneurship research literature. A small explorative survey on case studies in Entrepreneurship Education is presented. Descriptive results generate insights in students perspective on the usefulness of the case study based teaching methodology in comparison with traditional lectures and provide hints for a more elaborated future empirical study that could employ a proper model on the effectiveness and advantages of case study based learning. The authors conclude in encouraging an increase in the usage of case study based teaching in Entrepreneurship Education especially in Germany. Y1 - 2013 UR - https://www.researchgate.net/publication/280598026_Entrepreneurship_Education_between_Theory_and_Practice_Reflections_on_Case_Study_Based_Teaching VL - 9 IS - 1 SP - 57 EP - 94 PB - RossiSmith Academic ER - TY - CHAP A1 - Saßmannshausen, Sean Patrick A1 - Biele, Marco A1 - Koch, Lambert T. T1 - Fitz-Ritter Wine Estate : 220 Years of Tradition and Entrepreneurship T2 - International Entrepreneurship N2 - The Fitz-Ritter Wine Estate was founded in 1785. In 1837, the estate was supplemented by a champagne production. Today, the young owner Johann Fitz is the managing director of both companies in the 9th generation of the traditional family business. German wine producers have been facing global challenges for several years. This case shows how an entrepreneurial spirit in generations of successors contributes to the survival of a firm. It also shows how a medium sized business can cope with global challenges if it commits itself to international entrepreneurship. In this complex situation, Johann Fitz has to take decisions concerning strategic positioning, customer relations, distribution channels, new business segments, investments, and the international business. Y1 - 2009 UR - https://www.yumpu.com/en/document/read/3585818/fitz-ritter-wine-estate-220-years-of-tradition-and-entrepreneurship PB - Sage ER - TY - JOUR A1 - Winkler, Klaudia T1 - Alkoholabhangige Frauen als Minderheit in Fachkliniken JF - Wiener Zeitschrift für Suchtforschung N2 - Alkoholabhängige Frauen nehmen im Bereich der Alkoholismusbehandlung in mehrfacher Hinsicht den Status einer Minderheit ein. Zum einen sind sie in Einrichtungen, in denen stationäre Behandlung angeboten wird, in Relation zu ihrem Anteil an der Gesamtzahl der alkoholabhängigen seltener anzutreffen als Manner; desweiteren sind sie in den Kliniken, in denen sie gemeinsam mit Männern behandelt werden, deutlich in der Minderheit und schließlich werden Themen, die sie betreffen im Rahmen der Behandlung seltener berücksichtigt. Es werden mögliche Erklärungen dafür gesucht, weshalb Frauen Fachkliniken seltener in Anspruch nehmen als Männer. Au ßerdem werden Folgen der Minderheitssituation der Frauen für die Kliniken als Institutionen und die Interaktion zwischen Patientinnen und Patienten aufgezeigt. T2 - Alcohol dependent women as a minority group in specialized clinics Y1 - 1996 UR - http://sfu-oc.sfu.ac.at/index.php/s/WC5FBhnAJcthLWT#pdfviewer SN - 1012-9375 VL - 19 IS - 3-4 SP - 55 EP - 62 PB - Anton Proksch-Inst. ; Ludwig Boltzmann-Inst. für Suchtforschung CY - Wien ER - TY - INPR A1 - Frikel, Jürgen A1 - Quinto, Eric Todd T1 - A paradigm for the characterization of artifacts in tomography N2 - We present a paradigm for characterization of artifacts in limited data tomography problems. In particular, we use this paradigm to characterize artifacts that are generated in reconstructions from limited angle data with generalized Radon transforms and general filtered backprojection type operators. In order to find when visible singularities are imaged, we calculate the symbol of our reconstruction operator as a pseudodifferential operator. KW - computed tomography KW - Fourier integral operators KW - Lambda tomography KW - limited angle tomography KW - microlocal analysis KW - radon transforms Y1 - 2014 U6 - https://doi.org/10.48550/arXiv.1409.4103 ER - TY - CHAP A1 - Hu, Rongbo A1 - Linner, Thomas A1 - Wang, Suting A1 - Cheng, Wenting A1 - Liu, Xiaolong A1 - Güttler, Jörg A1 - Zhao, Charlie A1 - Lu, Yuan A1 - Bock, Thomas ED - Feng, Chen ED - Linner, Thomas ED - Brilakis, Ioannis T1 - Towards a Distributed Intelligent Home Based on Smart Furniture for China's Aging Population BT - A survey T2 - Proceedings of the 38th International Symposium on Automation and Robotics in Construction (ISARC): 02.11.2021 - 04.11.2021, Dubai, United Arab Emirates N2 - Population aging is one of the major challenges facing the world. In particular, the advent of China's aging society caused by various factors will be a major threat to its future development. Therefore, serious measures need to be taken to achieve its demographic sustainability. Smart furniture can be considered as a novel subcategory of gerontechnology. One of the main outcomes of the EU-funded REACH project was a variety of smart furniture named Personalized Intelligent Interior Units (PI2Us) which served as the key component of a distributed intelligent home to promote the health and activity level of older adults. This outcome can potentially be a solution to mitigate the consequences caused by population aging. In order to understand the attitudes and opinions of Chinese older adults towards the relevant technologies, the authors conducted an opinion survey using the PI2Us as an example, which sampled more than 380 older adults in 26 out of 34 provincial-level administrative divisions of China. The survey showed that Chinese older adults in general have a highly positive attitude towards smart furniture and smart home technologies. Several other insights also can be revealed from the survey. Based on further analyses, the paper summarized why the elderly-oriented smart furniture and distributed intelligent home has the potential to thrive in China's market soon. Finally, a three-year project action plan for implementing localized solutions in cooperation with a large Chinese furniture manufacturer was presented. KW - Chinese older adults KW - Distributed intelligent home KW - Gerontechnology KW - Population aging KW - Smart furniture KW - Survey Y1 - 2021 SN - 978-952-69524-1-3 U6 - https://doi.org/10.22260/ISARC2021/0008 SP - 41 EP - 48 PB - International Association for Automation and Robotics in Construction (IAARC) ER - TY - THES A1 - Laumer, Tobias T1 - Erzeugung von thermoplastischen Werkstoffverbunden mittels simultanem, intensitätsselektivem Laserstrahlschmelzen N2 - Mittels des entwickelten additiven Fertigungsprozesses des simultanen, intensitätsselektiven Laserstrahlschmelzens lassen sich Werkstoffverbunde bestehend aus unterschiedlichen Polymerwerkstoffen mit hohen Bauteilfestigkeiten realisieren. Die zukünftig realisierbaren Werkstoffverbunde können dabei durch eine örtlich variable Ausnutzung der unterschiedlichen Werkstoffeigenschaften die hinsichtlich lokal definierter Belastungsprofile gestellten Anforderungen an komplexe Multi-Material-Bauteile erfüllen. Dadurch lassen sich neue Anwendungsfelder für die additive Fertigung von Werkstoffverbunden erschließen. Y1 - 2017 UR - https://www.researchgate.net/publication/330440080_Erzeugung_von_thermoplastischen_Werkstoffverbunden_mittels_simultanem_intensitatsselektivem_Laserstrahlschmelzen SN - 978-3-87525-428-0 PB - Meisenbach CY - Bamberg ER - TY - GEN A1 - Schütz, Sandra A1 - Brodersen, Folke A1 - Ebner, Sandra T1 - Partizipation ermöglichen! Einbezug von gehörlosen und schwerhörigen Kindern und Jugendlichen durch geeignete Befragungsmethoden T2 - Berufsbegleitende Zusatzqualifikation „Verstehen lernen - Türen öffnen - Sprache finden - Brücken bauen.“ Regens Wagner Fortbildung, Dillingen Y1 - 2017 N1 - Berufsbegleitende Zusatzqualifikation CY - Dillingen ER - TY - CHAP A1 - Koch, Lambert T. A1 - Kuhn, Wolfgang A1 - Saßmannshausen, Sean Patrick T1 - Träger der Gründungsförderung T2 - Gründerfernstudium Y1 - 2001 PB - FernUniversität Hagen CY - Hagen ER - TY - CHAP A1 - Gruenhagen, Marc A1 - Koch, Lambert T. A1 - Saßmannshausen, Sean Patrick T1 - Kooperation in EXIST-Gründungsförderungsnetzwerken T2 - Entrepreneurship Jahrbuch 2004/05 N2 - Der Beitrag diskutiert ausgewählte Erfordernisse einer staatlichen Unterstützung von Unternehmensgründungen durch regionale Gründungsförderungsnetzwerke (GFN). Insbesondere wird die Bedeutung von Schlüsselpersonen für die Erzeugung und Aufrechterhaltung netzwerkinterner Kooperation untersucht. Das Erhalten von Netzwerkkooperation stellt aufgrund der für GFN typischen heterogenen Struktur der Netzwerkmitglieder sowie wegen der „künstlichen“, häufig politisch initiierten, Entstehung solcher Netzwerke eine besondere Herausforderung an die zentralen Akteure dar. Für die Analyse der Rollen der Schlüsselakteure wird das Promotorenmodell aus der Innovationsforschung verwendet, das zwischen verschiedenen Promotorenfunktionen unterscheidet und die jeweiligen, für die Ausübung dieser Funktionen genutzten, organisationalen Ressourcen analysiert. Die spezifischen Fragestellungen des Beitrags sind: 1.Welche Promotorenrollen und Promotorenstrukturen treten in EXIST-GFN auf, und welche Netzwerkressourcen werden hierbei genutzt? 2. Welche Bedeutung haben Promotorenfunktionen für das Erzeugen und Sichern von Netzwerkkooperation? Das qualitativ-explorative Untersuchungsdesign umfasst fünf Fallstudien zu den GFN aus der ersten Phase der Initiative „EXIST — Existenzgründungen aus Hochschulen“ des Bundesministeriums für Bildung und Forschung. Jede Fallstudie beinhaltet drei teilstrukturierte Interviews mit Schlüsselpersonen des jeweiligen GFNs. Die Schlüsselpersonen wurden in drei „Meta-Interviews“ mit den politischen Initiatoren des EXIST-Programms vorab identifiziert. Die Ergebnisse deuten auf eine Reihe wesentlicher Funktionen der Schlüsselpersonen im Hinblick auf Kooperation in den EXIST-Netzwerken hin, so zum Beispiel die Generierung und Aufrechterhaltung von Nutzenpotenzialen für eine dauerhafte Teilnahme der Netzwerkpartner sowie die Ausübung von „diplomatischen“ Funktionen zur Erhaltung der Interessenbalance zwischen den Netzwerkmitgliedern. In Bezug auf in den Netzwerken auftretende Promotorenrollen haben Beziehungs- und Prozesspromotorenrollen eine empirische Bedeutung im Rahmen der genannten Funktionen. Macht- und Fachpromotoren treten in den fünf Netzwerken hingegen seltener auf. Die Ergebnisse lassen vermuten, dass die Hauptaufgabe der Schlüsselpersonen darin liegt, über die genannten Funktionen einen geeigneten Rahmen für die Kooperation der Netzwerkpartner im Prozess der Gründungsunterstützung bereitzustellen und zu erhalten. Am Prozess der operativen Gründungsunterstützung selbst und den damit verbundenen reziproken Austauschprozessen zwischen den Netzwerkpartnern sind die Schlüsselpersonen hingegen nur zu einem geringeren Ausmaß beteiligt. Y1 - 2005 U6 - https://doi.org/10.1007/3-540-26823-5_17 SP - 319 EP - 338 PB - Springer CY - Berlin ER - TY - CHAP A1 - Lier, Alexander A1 - Stamminger, Marc A1 - Selgrad, Kai T1 - CPU-Style SIMD Ray Traversal on GPUs T2 - Proceedings of the Conference on High-Performance Graphics N2 - In this paper we describe and evaluate an implementation of CPU-style SIMD ray traversal on the GPU. We show how spreading moderately wide BVHs (up to a branching factor of eight) across multiple threads in a warp can improve performance while not requiring expensive pre-processing. The presented ray-traversal method exhibits improved traversal performance especially for increasingly incoherent rays. KW - GPU KW - ray tracing KW - SIMD Y1 - 2018 SN - 9781450358965 U6 - https://doi.org/10.1145/3231578.3231583 SP - 1 EP - 4 PB - Association for Computing Machinery CY - New York, NY, USA ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Zilch, Konrad A1 - Niedermeier, Roland T1 - Verstärken mit Kohlenstofffaserverbundwerkstoffen T2 - DAfStb-Forschungskolloquium: Beiträge zum 50. Forschungskolloquium des DAfStb am 8./9. Oktober 2009 an der Technischen Universität München Y1 - 2009 SP - 35 EP - 44 CY - Berlin ER - TY - CHAP A1 - Weber, Karsten ED - Aleksandrowicz, Dariusz ED - Ruß, H. T1 - Falsifizierbarkeit als Kriterium erfolgreicher interdisziplinärer Forschung T2 - Realismus - Disziplin - Interdisziplinarität Y1 - 2001 UR - https://www.researchgate.net/publication/263820381_Falsifizierbarkeit_als_Kriterium_erfolgreicher_interdisziplinarer_Forschung PB - Rodopi CY - Amsterdam, Atllanta ER - TY - BOOK A1 - Steffens, Oliver T1 - Einfluss der Potentialmodulation auf Magnetotransport und Quantenchaos in lateralen Halbleiter-Übergittern Y1 - 1996 SN - 978-3-89608-726-3 N1 - Mikrofiche-Ausg. PB - Tectum-Verl. CY - Marburg ER - TY - GEN A1 - Schütz, Sandra A1 - Gaupp, Nora T1 - Lebenslagen und Aufwachsen von Jugendlichen mit Behinderungen T2 - 54. Treffen der Landesbeauftragten für Menschen mit Behinderung, Oktober 2017, Kiel Y1 - 2017 ER - TY - JOUR A1 - Knödler, Christoph T1 - Zur Vermeidung von formalen Fehlern in Klausuren JF - Juristische Schulung - JuS Y1 - 1996 IS - 9 SP - L65 EP - L67 PB - C.H. Beck CY - München ER - TY - CHAP A1 - Selgrad, Kai A1 - Müller, Jonas A1 - Reintges, Christian A1 - Stamminger, Marc ED - Eisemann, Elmar ED - Fiume, Eugene T1 - Fast Shadow Map Rendering for Many-Lights Settings T2 - Eurographics Symposium on Rendering - Experimental Ideas & Implementations N2 - n this paper we present a method to efficiently cull large parts of a scene prior to shadow map computations for many-lights settings. Our method is agnostic to how the light sources are generated and thus works with any method of light distribution. Our approach is based on previous work in culling for ray traversal to speed up area light sampling. Applied to shadow mapping our method works for high- and low-resolution shadow maps and, in contrast to previous work on many-lights rendering, does neither entail scene approximations nor imposes limits on light range, while still providing significant gains in performance. In contrast to standard culling methods shadow map rendering itself is sped up by a factor of 1.5 to 8.6 while the speedup of shadow map rendering, lookup and shading together ranges from 1.1 to 4.2 KW - shadowing and texture KW - Color KW - picture/image generation KW - shadin Y1 - 2016 SN - 978-3-03868-019-2 U6 - https://doi.org/10.2312/sre.20161208 SP - 41 EP - 48 PB - The Eurographics Association ER - TY - JOUR A1 - Iturralde, Kepa A1 - Linner, Thomas A1 - Bock, Thomas T1 - Matching kit interface for building refurbishment processes with 2D modules JF - Automation in Construction N2 - A need exists for faster installation of prefabricated modules in the refurbishment market. Current solutions for installing and fitting prefabricated modules on existing buildings are time consuming. The objective of this research is to reduce the time currently required for the installation of timber-based 2D modules by using innovative technologies while improving placement accuracy. A novel installation concept was proposed based on a digitally produced matching kit interface that corrects existing building’s irregularities and connector placement deviations. This solution was tested, validated, and compared in several manufacturing contexts. The tests recorded measurable variables such as the manufacturing time and placement accuracy of the modules. The results demonstrate decreases up to 73% in installation time and placement deviations of less than 2 mm. KW - Customization KW - installation KW - prefabrication KW - Refurbishing Y1 - 2020 U6 - https://doi.org/10.1016/j.autcon.2019.103003 VL - 110 IS - February PB - Elsevier ER - TY - JOUR A1 - Orwat, Carsten A1 - Raabe, Oliver A1 - Buchmann, Erik A1 - Anandasivam, Arun A1 - Freytag, Johan-Christoph A1 - Helberger, Natali A1 - Ishii, Kei A1 - Lutterbeck, Bernd A1 - Neumann, Dirk A1 - Otter, Thomas A1 - Pallas, Frank A1 - Reussner, Ralf A1 - Sester, Peter A1 - Weber, Karsten A1 - Werle, Raymund T1 - Software als Institution und ihre Gestaltbarkeit JF - Informatik-Spektrum N2 - Software regelt immer mehr zwischenmenschliche Interaktionen. Üblicherweise werden die Funktionsmechanismen, Wirkungen und Gestaltungsoptionen von Regeln in der Institutionenforschung behandelt. In diesem Artikel soll beleuchtet werden, inwieweit sich Ansätze der Institutionenforschung auf Software anwenden lassen und was sich aus dieser Forschungsperspektive zu den Regelungswirkungen und Gestaltungsoptionen von Software ableiten lässt. Y1 - 2010 U6 - https://doi.org/10.1007/s00287-009-0404-z VL - 33 IS - 6 SP - 626 EP - 633 ER - TY - JOUR A1 - Weber, Karsten A1 - Nagenborg, Michael A1 - Drüeke, Ricarda A1 - Langewitz, Oliver T1 - Ubiquitous Media BT - Ökonomische und technische Rahmung sozialer Handlungsmöglichkeiten JF - Merz Medien + Erziehung, Zeitschrift für Medienpädagogik N2 - Die durch das Internet und Web 2.0 mit angestoßene Medienkonvergenz zwingt die Medien- und Contentindustrie zur stetigen Bereitstellung neuer medialer Inhalte; die stetig wachsende Nachfrage zu decken wird über deren unternehmerischen Erfolg entscheiden. Es wird ein Szenario entwickelt, in dem die Konsumenten gleichzeitig Produzenten der In- halte sind und dabei Kommunikationsinfrastrukturen wie Mobiltelefone nutzen. Es werden die weitreichenden sozialen Konsequenzen dieser Entwicklung skizziert. Y1 - 2009 UR - https://www.researchgate.net/publication/235550940_Ubiquitous_Media_-_Okonomische_und_technische_Rahmung_sozialer_Handlungsmoglichkeiten VL - 53 IS - 6 SP - 102 EP - 110 ER - TY - JOUR A1 - Weber, Karsten T1 - Information Ethics in a Different Voice, Or BT - Back to the Drawing Board of Intercultural Information Ethics JF - IRIE - International Review of Information Ethics N2 - Within the information ethics community one can observe a mainstream discussion including some fundamental presuppositions which appear to be something like dogmas. The most important of these dogmas seems to be that we must create a new kind of intercultural information ethics. It is often argued that (comparative) studies have shown that different cultures, according to culturally determined norms and values, react in different ways to the impacts of ICT; it is stressed that an intercultural information ethics must take these cultural particularities into account. But in the paper at hand it shall be argued that taking cultural differences into consideration does not create a necessity to invent a new intercultural information ethics. On the contrary it shall be claimed that we already know several intercultural ethics which only have to be applied to ICT and its impact to societies. Y1 - 2010 VL - 13 IS - 1 SP - 6 EP - 11 ER - TY - CHAP A1 - Weber, Karsten ED - Robben, B. ED - Schelhowe, H. T1 - Bottom-Up Mixed-Reality: Emergente Entwicklung, Unkontrollierbarkeit und soziale Konsequenzen T2 - Be-greifbare Interaktionen - Der allgegenwärtige Computer: Touchscreens, Wearables, Tangibles und Ubiquitous Computing Y1 - 2012 UR - https://www.researchgate.net/publication/256474265_Bottom-Up_Mixed-Reality_Emergente_Entwicklung_Unkontrollierbarkeit_und_soziale_Konsequenzen U6 - https://doi.org/10.14361/transcript.9783839420058.347 U6 - https://doi.org/10.35096/othr/pub-434 SP - 347 EP - 366 PB - Transcript CY - Bielefeld ER - TY - JOUR A1 - Weber, Karsten A1 - Bittner, Uta A1 - Manzeschke, Arne A1 - Rother, Elisabeth A1 - Quack, Fredericke A1 - Dengler, Kathrin A1 - Fangerau, Heiner T1 - Taking Patient Privacy and Autonomy More Seriously BT - Why an Orwellian Account Is Not Sufficient JF - American Journal of Bioethics Y1 - 2012 U6 - https://doi.org/10.1080/15265161.2012.699147 VL - 12 IS - 9 SP - 51 EP - 53 ER - TY - JOUR A1 - Weber, Karsten A1 - Drüeke, Ricarda T1 - Konvergente Medien, Fragmentierung der Öffentlichkeit und medienethische Anmerkungen JF - Zeitschrift für Kommunikationsökologie und Medienethik Y1 - 2010 VL - 12 IS - 1 SP - 1 EP - 7 ER - TY - JOUR A1 - Weber, Karsten T1 - Gewalt in den Medien BT - methodologische, wissenschaftstheoretische und medienethische Reflektionen JF - Ethica Y1 - 2010 VL - 18 IS - 2 SP - 1 EP - 17 ER - TY - JOUR A1 - Weber, Karsten T1 - Simulationen in den Sozialwissenschaften JF - Journal for General Philosophy of Science N2 - Computer simulation—hereafter just called ‘simulation’— more and more is getting an important tool in scientific research and development. Simulations provide powerful means for quite different scientific disciplines, for instance for cosmology as well as for economics, and it seems that they can help to extend the borderline of science. However, from a methodological point of view, besides their benefits one can identify several theoretical problems which can occur in the process of scientific research. Some of these problems shall be discussed and consequences of these problems for the use of simulations shall be outlined. KW - Instrumentalismus KW - Realismus KW - Simulation KW - Theorieprütung Y1 - 2007 U6 - https://doi.org/10.1007/s10838-006-9011-8 VL - 38 IS - 1 SP - 111 EP - 126 ER - TY - JOUR A1 - Weber, Karsten A1 - Drüeke, Ricarda A1 - Langewitz, Oliver A1 - Nagenborg, Michael T1 - Konvergente Medien, Fragmentierung der Öffentlichkeit und medienethische Anmerkungen JF - Merz Medien + Erziehung, Zeitschrift für Medienpädagogik N2 - Medienkonvergenz fördert die Entwicklung neuer Anbieter, die sich nicht nur als Konkurrenz, sondern als Antithese zu traditionellen Massenmedien sehen. Ihnen wird die Hoffnung entgegengebracht, zur Integration der medial vermittelten Öffentlichkeit beizutragen, andererseits existieren Befürchtungen, dass sie die bereits bestehende Fragmentierung der Öffentlichkeit verstärken. Am Beispiel der politischen Kommunikation in konvergenten Medien wird die Plausibilität entsprechender Prognosen untersucht. Y1 - 2009 VL - 53 IS - 6 ER - TY - CHAP A1 - Weber, Karsten T1 - Suchmaschinen und die Repräsentation von Kultur: Zwischen Markt und Gerechtigkeit T2 - Kulturelle Diversität und Neue Medien Y1 - 2011 UR - https://www.researchgate.net/publication/256474263_Suchmaschinen_und_die_Reprasentation_von_Kultur_Zwischen_Markt_und_Gerechtigkeit SP - 33 EP - 52 PB - Trafo CY - Berlin ER - TY - CHAP A1 - Weber, Karsten ED - Rebensburg, K. T1 - Bottom-Up Mixed-Reality: Emergente Entwicklung, Unkontrollierbarkeit und soziale Konsequenzen T2 - Web, Film, Medien, Computer - Wirklichkeit und Visionen der Informationsgesellschaft. Neue Medien und Technologien der Informationsgesellschaft Y1 - 2011 PB - Universitätsverlag der TU Berlin CY - Berlin ER - TY - JOUR A1 - Weber, Karsten T1 - Im Netz von Clans BT - Global verteilte Gemeinschaften statt globaler Gesellschaft JF - iz3w - Zeitschrift zwischen Nord und Süd Y1 - 2009 UR - https://www.iz3w.org/zeitschrift/ausgaben/315_digitale_welten/faa IS - 315 SP - 20 EP - 23 ER - TY - JOUR A1 - Weber, Karsten T1 - Die Evolution von I&G oder: Die Mühen der Ebene BT - Eine Antwort auf Karl-Heinz Rödiger JF - FIfF Kommunikation Y1 - 2009 VL - 26 IS - 3 ER - TY - JOUR A1 - Weber, Karsten T1 - "Don't be evil" BT - Ein kritischer Blick auf die moralische Selbstregulierung von Suchmaschinen mithilfe von Ethikcodizes JF - Umwelt und Gesundheit Y1 - 2009 VL - 14 IS - 3 SP - 1 EP - 6 ER - TY - JOUR A1 - Weber, Karsten T1 - Terahertzscanner BT - Anwendungen und offene Fragen JF - EMF Monitor - Elektromagnetische Felder, Umwelt und Gesundheit Y1 - 2009 VL - 14 IS - 3 ER - TY - JOUR A1 - Weber, Karsten T1 - Bilder lügen nicht BT - aber sie sagen oft auch nicht die Wahrheit. Simulationen in Dokumentationen und im Bildungs- und Wissenschaftsfernsehen JF - Zeitschrift für Kommunikationsökologie und Medienethik N2 - Current productions of motion pictures often include computer generated images which shortly are called CGI. In the cinema, spectators of such motion pictures are aware of the fact that they consume a kind a fantasy. Of course, even those fantasies can have the effect that spectators believe in the story and are immersed into the imagined world. However, when spectators leave the cinema almost all adult individuals with normal cognitive capacities know that they have consumed a fantasy. But there is a context of application of such CGIs that makes it quite difficult to draw the line between reality and imagination. If CGIs are used in media formats like documentations of past events, in scientific oriented programs, or in films which shall be used in school, computer generated images can have quite disturbing effects. For example, in 1999 the BBC featured a famous TV series on dinosaurs and massively used CGIs to visualize those creatures. However, a lot of the characteristics of dinosaurs which are presented as facts in the series are merely bold conjectures. Did dinosaurs make sounds, how did they behave: These are questions which cannot be answered with the tools of archaeology and by interpreting the remains of dinosaurs. Therefore, the CGIs in the series provide a view on reality which might be merely a sophisticated imagination. While experts in the field may recognize that, lay people, for instance children, do not have the cog-nitive capacities to see this problem. Therefore, they are likely to believe that dinosaurs were exactly the way they are shown in those series. This is not only an epistemological problem but a moral one. From (media) ethics point of view, it is necessary to make clear what is backed up by scientific evidence and what is merely a conjecture that can be visualized by computers. Particularly in news, scientific programs and the like the distinction of reality and imagination must be emphasized. Y1 - 2006 UR - https://www.netzwerk-medienethik.de/wp-content/uploads/2012/01/ZfKM_2006_komplett.pdf SN - 1861-2687 VL - 1 IS - 8 SP - 45 EP - 48 ER - TY - CHAP A1 - Weber, Karsten ED - Rat für Sozial- und Wirtschaftsdaten, T1 - New Methods in Human Subjects Research: Do We Need a New Ethics? T2 - Building on Progress: Expanding the Research Infrastructure for the Social, Economic, and Behavioral Sciences, Band 2 N2 - Online surveys and interviews, the observations of chat rooms or online games, data mining, knowledge discovery in databases (KDD), collecting biomarkers, employing biometrics, using RFID technology - even as implants in the human body - and other related processes all seem to be more promising, cheaper, faster, and comprehensive than conventional methods of human subjects research. But at the same time these new means of gathering information may pose powerful threats to privacy, autonomy, and informed consent. Online research, particularly involving children and minors but also other vulnerable groups such as ethnic or religious minorities, is in urgent need of an adequate research ethics that can provide reasonable and morally justified constraints for human subjects research. The paper at hand seeks to provide some clarification of these new means of information gathering and the challenges they present to moral concepts like privacy, autonomy, informed consent, beneficence, and justice. Some existing codes of conduct and ethical guidelines are examined to determine whether they provide answers to those challenges and/or whether they can be helpful in the development of principles and regulations governing human subjects research. Finally, some conclusions and recommendations are presented that can help in the task of formulating an adequate research ethics for human subjects research. KW - Human Subjects Research KW - Online Research KW - Biomarkers KW - Biometrics KW - Autonomy KW - Privacy KW - Informed Consent KW - Research Ethics Y1 - 2009 UR - https://papers.ssrn.com/sol3/papers.cfm?abstract_id=1452620 SP - 657 EP - 672 PB - Budrich UniPress CY - Opladen ER - TY - CHAP A1 - Weber, Karsten ED - Lewandowski, Dirk T1 - Search Engine Bias T2 - Handbuch Internet-Suchmaschinen, Band II N2 - Der Name ‚Google’ wird heute synonym für ‚Suchmaschine’ genutzt; das Verb ‚googeln’ hat es zu einem Eintrag im Duden gebracht: Google ist allgegenwärtig. Dies bestätigen Statistiken, die aufweisen, dass Google in vielen Ländern andere Suchmaschinen völlig marginalisiert hat. Außerdem zeigen Untersuchungen, dass sich viele Nutzerinnen und Nutzer auf die Ergebnisse einer einzigen Suchmaschine – oft eben Google – verlassen. Daher stellt sich die Frage, ob die tatsächliche Qualität der Suchergebnisse das Vertrauen in die angenommene Qualität einer Suchmaschine rechtfertigen kann. Nach einleitenden Bemerkungen zum Suchmaschinenmarkt und einer kurzen Beschreibung der generellen Funktionsweise heute verbreiteter Suchmaschinen wird evaluiert, welche Faktoren die Ergebnisse einer Suchmaschine determinieren. Dabei wird sich zeigen, dass Suchergebnisse durch vielfältige Faktoren beeinflusst werden, so bspw. durch das Nutzerverhalten auf verschiedenen Ebenen, durch die verwendeten Indexierungs- und Suchalgorithmen oder durch die Inhalte des Netzes selbst. Diese und weitere Faktoren führen zu Verzerrungen der Suchergebnisse gegenüber einem unterstellten Idealergebnis. Es zeigt sich, dass es in vielen Situationen sinnvoll ist, sich nicht nur auf eine Suchmaschine zu verlassen bzw. den Ergebnissen einer Suchmaschine nicht blind zu vertrauen. So ist im wissenschaftlichen oder journalistischen Kontext dringend die Nutzung von bereichsspezifischen Suchmaschinen und anderer Rechercheformen angeraten. KW - Suchmaschine KW - Suchergebnis KW - Verzerrung KW - Fehler KW - Bias Y1 - 2011 UR - https://www.researchgate.net/publication/256473910_Search_Engine_Bias PB - Akademische Verlagsanstalt CY - Heidelberg ER - TY - CHAP A1 - Weber, Karsten T1 - Von den Grenzen der "grenzenlosen" Freiheit der elektronischen Möglichkeiten - Wo bleibt der Mensch? T2 - Informationes Theologiae Europae - Internationales ökumenisches Jahrbuch der Theologie N2 - Sowohl in öffentlichen Debatten wie auch in wissenschaftlichen Diskussionen wird Informationsund Kommunikationstechnologie häufig als eine Gefahr für unser Leben angesehen. Insbesondere wird vor der Erosion der Privatsphäre, vor Autonomie- und Freiheitsverlusten gewarnt. Informations- und Kommunikationstechnologie, so wird behauptet, wird unbegrenzte Möglichkeiten allgegenwärtiger Überwachung und Kontrolle bieten und zur Wandlung der Menschen vom Subjekt der Technikgestaltung zum durch Technik determinierten Objekt beitragen. Um dies zu verhindern, wird häufig nach mehr order minder restriktiver Regulierung gerufen. Im Folgenden soll jedoch gezeigt werden, dass gerade eine solche Regulierung jene Ängste wahr werden lassen könnte. Y1 - 2006 UR - https://www.researchgate.net/publication/256474441_Von_den_Grenzen_der_grenzenlosen_Freiheit_der_elektronischen_Moglichkeiten_-_Wo_bleibt_der_Mensch VL - 15 SP - 83 EP - 99 ER - TY - CHAP A1 - Weber, Karsten ED - Lingner, Stephan ED - Lutterbeck, Bernd ED - Pallas, Frank T1 - Reichweite und Grenzen der Technikfolgenabschätzung und Technikgestaltung T2 - Die Zukunft der Räume. Gesellschaftliche Fragen auf dem Weg zur Ambient Intelligence Y1 - 2010 UR - https://www.researchgate.net/publication/260824266_Die_Zukunft_der_Raume_Gesellschaftliche_Fragen_auf_dem_Weg_zur_Ambient_Intelligence SP - 53 EP - 65 PB - Europäische Akademie zur Erforschung von Folgen wissenschaftlich-technischer Entwicklungen Bad Neuenahr-Ahrweiler GmbH CY - Bad Neuenahr-Ahrweiler ER - TY - JOUR A1 - Weber, Karsten T1 - The Next Step: Privacy Invasions by Biometrics and ICT Implants BT - Privacy Invasions by Biometrics and ICT Implants JF - Ubiquity. An ACM IT Magazine and Forum Y1 - 2006 U6 - https://doi.org/10.1145/1195937.1187567 VL - 7 IS - 45 ER - TY - JOUR A1 - Weber, Karsten T1 - Editorial: Konflikte der Zukunft - Antworten der Ethik JF - Ethcia Y1 - 2006 UR - https://www.imagomundi.biz/wp-content/uploads/2018/12/ETHICA_14_Jahrgang_2006_Heft_1.pdf VL - 14 IS - 1 SP - 1 EP - 3 ER - TY - JOUR A1 - Nagenborg, Michael A1 - Weber, Karsten T1 - Der Wandel der Medienanbieter und die Notwendigkeit eines Paradigmenwechsels in der Medienethik JF - Zeitschrift für Kommunikationsökologie und Medienethik Y1 - 2005 SN - 1861-2687 VL - 7 IS - 1 ER - TY - JOUR A1 - Weber, Karsten T1 - Privacy Invasion BT - New technology that can identify anyone anywhere challenges how we balance individuals’privacy against public goals JF - EMBO Reports / Science and Society Y1 - 2006 U6 - https://doi.org/10.1038/sj.embor.7400684 VL - 7 IS - Special Issue „Science and Security“ SP - 536 EP - 539 ER - TY - JOUR A1 - Bittner, Peter A1 - Capurro, Rafael A1 - Coy, Wolfgang A1 - Hornecker, Eva A1 - Kurz, Constanze A1 - Rödiger, Karl-Heinz A1 - Schinzel, Britta A1 - Twisselmann, Ute A1 - Vollmar, Rainer A1 - Weber, Karsten A1 - Winter, Alfred A1 - Winter, Cornelia T1 - Ethische Leitlinien der GI BT - Entwurf des Arbeitskreises "Verantwortung" JF - Informatik Spektrum N2 - Seit Ihrer Verabschiedung im Jahr 1994 waren die Ethischen Leitlinien der Gesellschaft für Informatik Gegenstand zuweilen kontroverser Diskussionen. Einerseits wurde begrüßt, dass sich die GI verbindlich an ein ethisches Regelwerk bindet und dadurch ihren Mitgliedern einen Leitfaden an die Hand gibt, um in Konfliktsituationen besser entscheiden zu können. Andererseits wurde bemängelt, dass die Ethischen Leitlinien Forderungen stellten, die für professionelles Handeln unabdingbar seien und deshalb keine ethischen Ansprüche darstellten. Des Weiteren wurde kritisiert, dass die Ethischen Leitlinien zu sehr im Abstrakten verharrten und deshalb keine konkrete Handlungsanweisung geben könnten. Die fachlichen und überfachlichen Anforderungen wurden zuweilen als zu anspruchsvoll empfunden. Einige dieser Kritikpunkte sind sicherlich berechtigt. Im November 2001 begann der Arbeitskreis „Informatik und Verantwortung“ im Fachbereich Informatik und Gesellschaft (IuG) mit der Überarbeitung der Ethischen Leitlinien. Der hier vorgelegte Entwurf greift einige dieser Kritikpunkte auf. Seine Publikation soll eine breitere Diskussion innerhalb der GI ermöglichen. Die Autorinnen und Autoren dieses Entwurfs freuen sich auf diese Auseinandersetzung, die in der letzten Sitzung des Arbeitskreises durch den Vertreter der Selbständigen in der GI mit dem Hinweis begonnen wurde, dass den Leitlinien ein Berufsbild zugrunde liegt, in dem die Selbständigen nicht vorkommen. Die anlässlich der Informatik 2003 gegründete Fachgruppe “Informatik und Ethik“ wird sich zu ihrer ersten Aufgabe machen, die Ergebnisse dieser Diskussion in die endgültige Version einfließen zu lassen. Entsprechende Diskussionsbeiträge und Anregungen sollten an Karl-Heinz Rödiger (E-Mail: roediger@informatik.uni-bremen.de), kommissarischer Sprecher der Fachgruppe, gerichtet werden. Y1 - 2003 U6 - https://doi.org/10.1007/s00287-003-0346-9 VL - 26 IS - 6 ER - TY - JOUR A1 - Weber, Karsten T1 - Social Aspects of Non-Proprietary Software JF - IJIE, International Journal of Information Ethics N2 - This paper shall give a brief history of Free Software and Open Source, then shall describe the background philosophy of these social movements and the social aspects of the non-proprietary software community in more detail, and address possible problems which could arise, for instance, for public funding of non-proprietary software development or for concepts of responsibility in the ethics of technology. Finally, a possible future of non-proprietary software shall be outlined, which strongly differs from the bright forecasts of the mainstream Open Source and Free Software supporters. Y1 - 2004 UR - http://www.i-r-i-e.net/inhalt/002/ijie_002_full.pdf SN - 1614-1687 VL - 2 IS - 11 SP - 1 EP - 8 ER - TY - CHAP A1 - Weber, Karsten ED - Schröder, Hartmut ED - Bock, U. T1 - Computersimulationen als Weltmodelle. Wissenschaftstheoretische Anmerkungen zur Nutzung von Modellen und Simulationen in den Geistes-, Sozial- und Kulturwissenschaften T2 - Semiotische Weltmodelle Y1 - 2010 UR - https://www.researchgate.net/publication/256474345_Computersimulationen_als_Weltmodelle_Wissenschaftstheoretische_Anmerkungen_zur_Nutzung_von_Modellen_und_Simulationen_in_den_Geistes-_Sozial-_und_Kulturwissenschaften SP - 635 EP - 653 PB - LIT CY - Münster ER - TY - JOUR A1 - Nagenborg, Michael A1 - Weber, Karsten T1 - Wer und wo bist Du, wenn Du über das Internet sprichst? JF - Information: Wissenschaft und Praxis Y1 - 2004 VL - 55 IS - 8 SP - 489 EP - 490 ER - TY - JOUR A1 - Weber, Karsten T1 - Die Schließung der digitalen Spaltung BT - Anspruch und Wirklichkeit JF - Ethica Y1 - 2004 SN - 1021-8122 VL - 12 IS - 2 SP - 115 EP - 136 ER - TY - JOUR A1 - Weber, Karsten T1 - Grenzen von Ethikcodizes JF - Kriterion - Zeitschrift für Philosophie N2 - Technology penetrates into all areas of our everyday and individual life and changes it in a considerable speed. This applies particularly to developments of information and communication technology since this technology shows its effects not only at our workplaces but transforms and sometimes determines the social behavior of people. Unfortunately, development and use of technology certainly doesn't go hand into hand with the acceptance of responsibility for consequences of effects of developing and using technology. Instead, the opposite behavior is quite common. If this process of the rejection of responsibility shall be stopped, the sensibility of developers and users of technology for consequences of their own behavior have to be aroused and trengthened. In the following text at first I will describe some reasons to formulate ethical guidelines. After this, with the example of the ethical guidelines of the German Gesellschaft für Informatik e. V. (GI), I will discuss, whether such ethical guidelines are ethical in the strict sense of the word and whether they actually can be a contribution to accomplish the striven aim of assignment of responsibility for the results of developing and using technology. Y1 - 2002 UR - http://www.kriterion-journal-of-philosophy.org/kriterion/volume-15-2002/ VL - 15 SP - 3 EP - 12 ER - TY - CHAP A1 - Weber, Karsten ED - Hoffstadt, Christian F. ED - Peschke, Franz ED - Schulz-Buchta, Andreas ED - Nagenborg, Michael T1 - "Beim Essen lasse ich mir nicht reinreden" - Essen und Autonomie T2 - Gastrosophical Turn. Essen zwischen Medizin und Öffentlichkeit Y1 - 2009 UR - https://www.researchgate.net/publication/256474704_Beim_Essen_lasse_ich_mir_nicht_reinreden_-_Essen_und_Autonomie PB - Projekt-Verlag CY - Bochum ER - TY - CHAP A1 - Weber, Karsten ED - Langewitz, Oliver T1 - Filme und Internet – Marktchancen und soziale Konsequenzen T2 - Film und Internet. Über die Nutzung von Film- und Videocontent im Web 2.0 Y1 - 2008 UR - https://cuvillier.de/uploads/preview/public_file/2877/9783867277037.pdf SP - 19 EP - 24 PB - Cuvillier CY - Göttingen ER - TY - JOUR A1 - Weber, Karsten T1 - Brauchen wir eine Ethik der Informations- und Kommunikationstechnologie? BT - Brauchen wir eine Informationsethik? JF - Ethica Y1 - 2000 UR - https://www.imagomundi.biz/wp-content/uploads/2018/12/ETHICA_8_Jahrgang_2000_Heft_2.pdf VL - 8 IS - 2 SP - 115 EP - 138 ER - TY - CHAP A1 - Weber, Karsten ED - Fürst, M. ED - Gombocz, W. ED - Hiebaum, C. T1 - Wer bestimmt über die technische Selbstmodifikation der Person? T2 - Gehirne und Personen. Beiträge zum 8. Internationalen Kongress der Österreichischen Gesellschaft für Philosophie in Graz Y1 - 2008 SP - 187 EP - 194 PB - Ontos CY - Frankfurt/Main ER - TY - CHAP A1 - Weber, Karsten ED - AufderHeide, M. ED - Dambrowski, M. T1 - Anything goes? Ethisch sensible Problemfelder in der digital vernetzten Wirtschaft. T2 - Internetökonomie und Ethik. Wirtschaftsethische und moralökonomische Perspektiven des Internets Y1 - 2009 SP - 12 EP - 33 PB - Duncker & Humblo CY - Berlin ER - TY - JOUR A1 - Weber, Karsten T1 - Der Mythos von der globalen Wissensgesellschaft JF - Ethica Y1 - 2001 UR - https://www.imagomundi.biz/wp-content/uploads/2018/11/ETHICA_9_Jahrgang_2001_Heft_2.pdf VL - 9 IS - 2 SP - 191 EP - 197 ER - TY - JOUR A1 - Weber, Karsten T1 - Die Sozionik und das Soziale JF - KI Y1 - 1999 UR - https://www.researchgate.net/publication/220633216_Die_Sozionik_und_das_Soziale IS - 4 SP - 59 EP - 60 ER - TY - CHAP A1 - Weber, Karsten ED - Lewandowski, Dirk T1 - Moral und Suchmaschinen T2 - Handbuch Internet-Suchmaschinen. Nutzerorientierung in Wissenschaft und Praxis Y1 - 2009 SP - 301 EP - 327 PB - Akademische Verlagsanstalt CY - Heidelberg ER - TY - JOUR A1 - Weber, Karsten T1 - Erklärung historischer Abläufe mit Computersimulationen T1 - Using Computer Simulations for the Explanation of Historical Processes JF - Historische Sozialforschung N2 - Computer simulations are used in various scientific disciplines – with a raising tendency in the humanities, too. Since one will find a branch of historical research which utilizes the analysis of quantitative data and methods of social sciences or economics, respectively, it is quite obvious to use computer simulations in history. Therefore, in the following text, motivations, aims, constraints, and methodological questions of the application of computer simulations in historical research are discussed on the basis of several examples of simulation of historical processes. It will be concluded that, although there are severe methodological limitations to the application of computer simulations, if the application is carried out carefully and if those limitations are recognized, some important benefits for historical research can be identified. Y1 - 2007 UR - https://papers.ssrn.com/sol3/papers.cfm?abstract_id=1836403 VL - 32 IS - 4 ER - TY - CHAP A1 - Weber, Karsten ED - Bora, A. ED - Bröchler, S. ED - Decker, Michael T1 - Closing the Digital Divide – lokal, nicht global T2 - Technology Assessment in der Weltgesellschaft Y1 - 2007 UR - https://www.researchgate.net/publication/256474825_Closing_the_Digital_Divide_-_lokal_nicht_global UR - https://www.nomos-elibrary.de/10.5771/9783845271101/technology-assessment-in-der-weltgesellschaft SP - 177 EP - 190 PB - Edition Sigma CY - Berlin ER - TY - JOUR A1 - Weber, Karsten ED - Institut für Informations- und Kommunikationsökologie e. V. (IKÖ), T1 - Plädoyer für unlimitierte Meinungsfreiheit als Grundlage einer europäischen Medienethik JF - Zeitschrift für Kommunikationsökologie und Medienethik Y1 - 2007 UR - http://www.netzwerk-medienethik.de/wp-content/uploads/2012/01/ZfKM_2007_komplett.pdf VL - 9 IS - 1 SP - 35 EP - 39 PB - Lit-Verlag, Münster – Hamburg – London CY - Duisburg ER - TY - JOUR A1 - Drüeke, Ricarda A1 - Weber, Karsten ED - Institut für Informations- und Kommunikationsökologie e. V. (IKÖ), T1 - Politische Kommunikation im Web 2.0 BT - konzeptionelle Überlegungen zu einem (nicht völlig) neuen Phänomen JF - Zeitschrift für Kommunikationsökologie und Medienethik Y1 - 2008 UR - http://www.netzwerk-medienethik.de/wp-content/uploads/2012/01/ZfKM_2008.pdf VL - 10 IS - 1 SP - 48 EP - 51 PB - Lit-Verlag CY - Münster ER - TY - CHAP A1 - Weber, Karsten ED - Gaycken, Sandro ED - Kurz, Constanze T1 - Informationsethik und technisierte Überwachung T2 - 1984.exe - Gesellschaftliche, politische und juristische Aspekte moderner Überwachungstechnologien Y1 - 2008 UR - https://content-select.com/de/portal/media/view/56d4235b-7c14-45ce-b9a9-6642b0dd2d03?forceauth=1 SP - 283 EP - 302 PB - Transcript CY - Bielefeld ER - TY - CHAP A1 - Weber, Karsten ED - Kolb, David ED - Salman, Ahmed Shaikh ED - Druzin, Bryan T1 - New Mobile Devices and Surveillance: Questions Concerning Epistemology and Some New Challenges for Privacy and Data Protection T2 - Postmodern Quests in Applied Philosophy Y1 - 2012 PB - Editura Lumen CY - Iasi ER - TY - CHAP A1 - Weber, Karsten ED - Maring, Matthias T1 - Globale Wissensallmende und Informationsnachhaltigkeit T2 - Globale öffentliche Güter in interdisziplinären Kontexten Y1 - 2012 UR - https://www.ksp.kit.edu/9783866449312 SP - 139 EP - 160 PB - KIT Scientific Publishing CY - Karlsruhe ER - TY - CHAP A1 - Weber, Karsten ED - Shan, J. ED - Shaaoping, G. ED - Jung, W. T1 - Ethics in the Assessment of Technological Consequences T2 - Applied Ethics: Economy, Science-Technology and Culture Y1 - 2008 N1 - chinesische Übersetzung, englischer Abstract PB - Renmin CY - Peking ER - TY - CHAP A1 - Weber, Karsten ED - Shan, J. ED - Shaaoping, G. ED - Jung, W. T1 - Grounds for Information Ethics T2 - Applied Ethics: Economy, Science-Technology and Culture Y1 - 2008 N1 - chinesische Übersetzung, englischer Abstract PB - Renmin CY - Peking ER - TY - JOUR A1 - Weber, Karsten T1 - Privatsphäre und Datenschutz in Europa JF - FIfF Kommunikation N2 - Die Nutzungspotentiale der Informations- und Kommunikationstechnologie stellen die Frage nach der Wahrung von Privatsphäre und Datenschutz. Gleichzeitig zeigen Erhebungen, dass ein großer Teil der EU-Bürger, selbst in als technikaffin geltenden Ländern, große Skepsis in Bezug auf die Wahrung ihrer Privatsphäre hegt. Bei der Gestaltung von IuK-gestützten Geräte und Dienstleistungen müssen daher solche Ängste beachtet werden, wenn sie auf dem Markt erfolgreich sein sollen. Dazu ist es jedoch zunächst einmal notwendig, besser zu verstehen, was die Betroffenen eigentlich unter Privatsphäre begreifen Y1 - 2006 UR - https://www.researchgate.net/publication/263818516_Privatsphare_und_Datenschutz_in_Europa VL - 24 IS - 2 SP - 26 EP - 31 ER - TY - JOUR A1 - Weber, Karsten T1 - Entwicklung und Digitale Spaltung BT - Zusammenhänge und Prioritäten JF - PROKLA 145 Zeitschrift für kritische Sozialwissenschaft N2 - Development and Digital Divide – Interdependencies and Priorities. After a brief introduction of definitions and causes of the digital divide, particularly with regard to developing coun-tries, the so-called “Simputer” and “One Laptop per Child” projects, which were designed to close the digital divide in developing countries, will be presented. It shall be argued that both projects are flawed by technological determinism and false assumptions about the impact of technology on social problems. As a conclusion it shall be predicted that the “One Laptop per Child” project is very likely to fail as the “Simputer” project already has failed. KW - Digitalisierung KW - Technik KW - Ungleichheiten KW - Globalisierung Y1 - 2006 U6 - https://doi.org/10.32387/prokla.v36i145.536 VL - 36 IS - 4 SP - 533 EP - 547 ER - TY - CHAP A1 - Weber, Karsten A1 - Aleksandrowicz, Dariusz ED - Aleksandrowicz, Dariusz ED - Weber, Karsten T1 - Kulturwissenschaften: auf dem Weg zu einer erneuten Spaltung der Wissenschaft? T2 - Kulturwissenschaften im Blickfeld der Standortbestimmung, Legitimierung und Selbstkritik Y1 - 2007 UR - https://www.researchgate.net/publication/256474741_Kulturwissenschaften_auf_dem_Weg_zu_einer_erneuten_Spaltung_der_Wissenschaft SP - 45 EP - 88 PB - Frank & Timme CY - Berlin ER - TY - CHAP A1 - Weber, Karsten ED - Aleksandrowicz, Dariusz ED - Weber, Karsten T1 - Science Wars or the Need for a Non-Dogmatic Defense of Realism T2 - Kulturwissenschaften im Blickfeld der Standortbestimmung, Legitimierung und Selbstkritik Y1 - 2007 UR - https://www.researchgate.net/publication/228175409_Science_Wars_or_the_Need_for_a_Non-Dogmatic_Defense_of_Realism SP - 233 EP - 254 PB - Frank & Timme CY - Berlin ER - TY - CHAP A1 - Weber, Karsten A1 - Drüeke, Ricarda A1 - Schulz, Axel ED - Miller, Harvey J. T1 - Mobile ICT in public spaces and its impact on privacy T2 - Societies and Cities in the Age of Instant Access KW - Global Position System KW - Mobile Phone KW - Public Space KW - Public Sphere KW - Universal Mobile Telecommunication System Y1 - 2007 U6 - https://doi.org/10.1007/1-4020-5427-0_13 VL - 88 SP - 197 EP - 208 PB - Springer CY - Berlin ER - TY - CHAP A1 - Weber, Karsten ED - Rothärmel, Sonja ED - Schmidt, K.W. ED - Wolfslast, G. T1 - Wer bestimmt über den Tod? Interventionsrechtete von Familienangehörigen und anderen Personen T2 - Familie versus Patientenautonomie? Zur Rolle der Familie bei Behandlungsentscheidungen ; Tagungsband der Taunus Winter School Y1 - 2006 SN - 978-3-89846-436-9 PB - Haag + Herchen CY - Frankfurt am Main ER - TY - JOUR A1 - Weber, Karsten T1 - Mobile Access to Information: Some Questions JF - CSI Communications, Special Issue on "Information Ethics" Y1 - 2005 UR - http://www.capurro.de/csi_June2005infoeth.pdf IS - 6 SP - 21 EP - 22 ER - TY - JOUR A1 - Weber, Karsten A1 - Capurro, Rafael T1 - Guest Editorial JF - CSI Communications, Special Issue on "Information Ethics" Y1 - 2005 UR - http://www.capurro.de/csi_June2005infoeth.pdf IS - 6 SP - 3 EP - 4 ER - TY - CHAP A1 - Weber, Karsten ED - Lehner, C. ED - Ohly, Heinz Peter ED - Rahnstorf, G. T1 - Aufgaben für eine globale Wissensgesellschaft oder "Welcome to the new IT?" T2 - Wissensorganisation und Edutainment: Wissen im Spannungsfeld von Gesellschaft, Gestaltung und Industrie N2 - Nicht nur in der wissenschaftlichen, sondern auch oder gerade in der öffentlichen Diskussion wird viel von der „Wissensgesellschaft“ gesprochen. Einmal davon abgesehen, dass dieser Ausdruck oftmals mit ganz verschiedenen Intentionen benutzt wird – so im Hinblick auf die Notwendigkeit, in der Arbeitswelt lebenslang zu lernen, auf die Wissensgeladenheit vieler neuer Produkte oder auf die Verlagerung von Bildungsprozessen von Schulen und Universitäten ins Internet –, ist bei genauerer Betrachtung nicht klar, wo Wissensgesellschaften existieren, im Entstehen begriffen sind oder entstehen könnten, d. h. welche Gesellschaften den Transformationsprozess von der XYZ- zur Wissensgesellschaft in der Vergangenheit schon vollzogen haben, gerade vollziehen oder in Zukunft vollziehen werden. Es ist auch nicht klar, ob es nur eine oder viele Wissensgesellschaften gibt, geben soll oder geben wird. Schon aus diesen wenigen Bemerkungen wird ersichtlich, dass die Rede von der (globalen) Wissensgesellschaft ähnlich wie jene von der Globalisierung alles andere als klar ist. In einem Überblick soll im Folgenden deshalb versucht werden, diese Unklarheiten zumindest ein wenig zu beseitigen. Es wird dabei deutlich, dass sich selbst nur lokale Wissensgesellschaften im Grunde allenfalls in statu nascendi befinden und eine globale Wissensgesellschaft noch in weiter Ferne liegt oder gar eine nicht zu realisierende Utopie darstellt. Zunächst wird der status quo beschrieben, also die große Ungleichheit in der Möglichkeit der Internetnutzung, global und auf das geografische Europa bezogen. Danach wird versucht, anzudeuten, welche Probleme gelöst werden müssten, damit diese Ungleichgewichtung abgebaut werden kann oder doch zumindest nicht noch größer wird. Zuletzt soll der Entwurf einiger Grundsätze aufgezeigt werden, die für die Gestaltung lokaler Wissensgesellschaften handlungsleitend sein sollten und meines Erachtens notwendige Bedingungen der Möglichkeit sowohl lokaler als auch globaler Wissensgesellschaften darstellen. Der damit verbundene normative Anspruch wird dabei mit der Annahme begründet, dass sich Informationen, Wissen und Bildung in der immer komplexer werdenden Welt zu Grundgütern entwickelt haben, ohne die auf der personalen Ebene ein gelungenes Leben kaum noch zu führen ist und ohne die auf der Ebene der Gemeinwesen eine Entwicklung ökonomisch benachteiligter Länder und Regionen beeinträchtigt oder gar verunmöglicht wird bzw. die schon hochindustrialisierten Staaten den bisher erreichten Lebensstandard nicht halten werden können. Y1 - 2004 UR - https://www.researchgate.net/publication/263818607_Aufgaben_fur_eine_globale_Wissensgesellschaft_oder_Welcome_to_the_new_IT PB - Ergon CY - Würzburg ER - TY - CHAP A1 - Weber, Karsten A1 - Drüeke, Ricarda ED - Brey, Philip ED - Grodzinsky, F. ED - Introna, L. T1 - Privacy, personal data protection, and the need to differentiate T2 - Ethics of New Information Technology. Proceedings of the 6th International Conference of Computer Ethics: Philosophical Enquiries (CEPE2005) N2 - The coming years will be characterized by the development of mobile ICT that will enable con - sumers to use information and communication services everywhere and anytime. Technologies like GPRS, WLAN, or UMTS can be used stand-alone or in combination with other technologies like RFID or GPS to provide, for instance, location-aware services. Mobile ICT is to be expected to evolve to that what often is called Ambient Intelligence, Ubiquitous or Pervasive Computing. It is likely that such new technologies will affect personnel privacy because providing mobile ICT services inherits the identification and often the exact localization of users. In the following text we shall analyze possible threats of privacy. We will distinguish different dimensions or aspects of privacy to show how new technologies can affect them. After that, we shall argue that it is necessary to make a distinction of privacy and data protection: privacy primarily is a matter of social norms and data protection the realm of technical measurements. Additionally, we will provide some empirical evidence that users of the Internet make that distinction. Finally, we will claim that the right to privacy and privacy itself only can be protected if there are widely accepted social norms regarding privacy. KW - Privacy, Data Protection, Mobile ICT, Ambient Intelligence, Social Norms KW - Data Protection KW - Mobile ICT KW - Ambient Intelligences KW - Social Norm Y1 - 2005 UR - https://www.researchgate.net/publication/263818596_Privacy_personal_data_protection_and_the_need_to_differentiate ER - TY - CHAP A1 - Weber, Karsten ED - Jarvie, Ian C. ED - Milford, Karl ED - Miller, David T1 - Science Wars – Remarks from a Critical Rationalist's Point of View T2 - Karl Popper: A Centenary Assessment. Volume II: Metaphysics and epistemology N2 - In this text I would like to make some remarks on the so called ‘Science Wars’ from a Critical Rationalist’s point of view. First I will describe the beginning of this war, which was given public awareness by Alan Sokal in 1996 publishing his text Transgressing the Boundaries. Toward a transformative Hermeneutics of Quantum Gravity in the postmodernist journal Social Text. In 1997 Alan Sokal, together with Jean Bricmont, again attacked postmodernist and poststructuralist scholars with the book Impostures Intellectuelles. I will describe the aims of their book and in addition portray briefly the postmodernist relativistic epistemology. Since Sokal and Bricmont identify Critical Rationalism as a source of that relativism, I then will show possible reasons for this reproach. I will reject their critique, since it is based on false estimations about Critical Rationalism but I also will show that there are some good reasons to criticize Critical Rationalism. As a kind of conclusion I will argue that in the future it is necessary that Critical Rationalists will dispute more offensively against postmodernist thinking to prevent a deepening of the gap between the humanities and science and because science is an important means to the improvement of our society. KW - Sokal's Hoax Y1 - 2006 UR - https://papers.ssrn.com/sol3/papers.cfm?abstract_id=1836410 SP - 95 EP - 108 PB - Ashgate CY - Aldershot et al. ER - TY - CHAP A1 - Weber, Karsten A1 - Drüeke, Ricarda A1 - Schulz, Axel ED - Ohly, Heinz Peter ED - Sieglerschmidt, J. ED - Swertz, C. T1 - Mobiler Wissenszugang: Digital Rights Management vs. Privacy T2 - Wissensorganisation und Verantwortung. Gesellschaftliche, ökonomische und technische Aspekte Y1 - 2006 UR - https://www.researchgate.net/publication/263818670_Mobiler_Wissenszugang_Digital_Rights_Management_vs_Privacy SP - 180 EP - 193 PB - Ergon CY - Würzburg ER - TY - CHAP A1 - Weber, Karsten ED - Aleksandrowicz, Dariusz ED - Czapara, M. T1 - Vom Nutzen und Schaden der Religion für freiheitliche Gesellschaften T2 - Religion, Ethics and Public Education - Religion, Ethik und öffentliche Bildung - Religia, etyka i edukacja publiczna T2 - On Benefits and Burdens of Religion for Free Societies Y1 - 2012 UR - https://www.researchgate.net/publication/263818662_Vom_Nutzen_und_Schaden_der_Religion_fur_freiheitliche_Gesellschaften IS - 4 SP - 1 EP - 22 PB - Peter Lang CY - Frankfurt am main ER - TY - CHAP A1 - Weber, Karsten ED - Lutterbeck, Bernd ED - Gehring, Robert A. T1 - Philosophische Grundlagen und mögliche Entwicklungen der Open Source- und Free Software-Bewegung T2 - Open Source Jahrbuch 2004. Zwischen Softwareentwicklung und Gesellschaftsmodell Y1 - 2004 UR - http://www.opensourcejahrbuch.de/download/jb2004/chapter_05/V-4-Weber.pdf PB - Lehmanns Media CY - Berlin ER - TY - CHAP A1 - Weber, Karsten ED - Neumaier, O. ED - Sedmak, C. ED - Zichy, M. T1 - Die andere Seite der Verteilungsgerechtigkeit T2 - Philosophische Perspektiven. Beiträge zum VII. Österreichischen Kongress für Philosophie Y1 - 2005 UR - https://www.researchgate.net/publication/263818730_Die_andere_Seite_der_Verteilungsgerechtigkeit PB - Ontos CY - Lancaster ER - TY - CHAP A1 - Weber, Karsten ED - Abel, G. T1 - Computersimulationen im Entdeckungszusammenhang T2 - Kreativität. Proceedings des XX. Deutschen Kongresses für Philosophie Y1 - 2005 UR - https://www.researchgate.net/publication/263818593_Computersimulationen_im_Entdeckungszusammenhang PB - Universitätsverlag der TU Berlin CY - Berlin ER - TY - CHAP A1 - Weber, Karsten ED - Fischer, Peter ED - Hubig, Christoph ED - Koslowski, Peter T1 - Soziale Aspekte non-proprietärer Software T2 - Wirtschaftsethische Fragen der E-Economy N2 - Non-proprietäre Software1entsteht in einer eher lockeren Form der Kooperation; deshalb ist die Zuordnung von Verantwortung für Folgen des Einsatzes entsprechender Software problematisch. Hinzu kommt, dass die GNU2General Public License (GPL3) und die Open Source-Definition4(dies gilt auch für andere Lizenzen non-proprietärer Software) explizit die Ablehnung der Verantwortung für Folgen des Softwareeinsatzes beinhalten. Nichtsdestotrotz ist die Welt non-proprietärer Software mitnichten so homogen, wie dies in vielen Darstellungen unterstellt wird, die inzwischen eine weitere Öffentlichkeit als nur jene der Computerfreaks erreicht haben. Sie zerfällt in sehr unterschiedliche Fraktionen oder — vielleicht besser —Sekten.Wir finden die Free Software Foundation (FSF) und ihre Anhänger rund um Richard Stallman, die Open Source-Bewegung, die stark von Eric S. Raymond bestimmt wird, außerdem die Linux-Gemeinde mit ihrem Frontmann Linus Torvalds und weiter im Hintergrund die verschiedenen BSD-Entwicklungszweige5. Ein wenig gleicht die Situation jener der verschiedenen Befreiungsbewegungen im Monty-Python-Film „The Life of Brian“: Alle beschimpfen sich gegenseitig als „Spalter“ und sind damit beschäftigt, sich gegen die jeweils anderen Gruppen abzugrenzen. Weniger komödiantisch ist jedoch, dass die Bewegungen rund um non-proprietärer Software Tendenzen zeigen, ins Ideologische6und Religiöse abzugleiten: hier stoßen Gläubige aufeinander — fundamentalistisch, kompromisslos, unbeirrbar. Sie verehren ihre Heiligen, besitzen ihr Glaubensbekenntnis und haben einen Gegner. Y1 - 2002 U6 - https://doi.org/10.1007/978-3-642-57345-3_12 SP - 202 EP - 213 PB - Physica CY - Heidelberg ER - TY - CHAP A1 - Weber, Karsten ED - Rötzer, Florian T1 - Gewalt und Medien, Gewalt durch Medien, Gewalt ohne Medien? T2 - Virtuelle Welten - reale Gewalt N2 - Der Amoklauf und Massenmord in Erfurt hat viele Auswirkungen. Neben dem unsäglichen Leid der direkt Betroffenen finden Medien und Politiker in den Ereignissen ein quotenträchtiges Thema. Was nicht verwundert, weil es lange eingeübten Regeln und Ritualen folgt, ist die schnelle Findung der letztlich Schuldigen: Film, Fernsehen, Musik, Computerspiele bzw. allgemeiner Gewaltinhalte der Medien. So liegt es wohl nahe, jene Inhalte aus dem Verkehr zu ziehen: durch Indizierung, durch Gesetze, durch technische Maßnahmen im Internet. Doch bei genauerem Hinschauen stellt sich die Frage, auf welcher Basis solche Schuldsprüche eigentlich aufbauen. Gibt es gesicherte Erkenntnisse über den Zusammenhang von Medien und Gewalt? Sind Maßnahmen, wie sie nun geplant werden, überhaupt wirksam? Können sie Gewalt verhindern? KW - Medien KW - Gewaltdarstellung KW - Jugend KW - Wirkung Y1 - 2003 UR - https://www.researchgate.net/publication/263820852_Gewalt_und_Medien_Gewalt_durch_Medien_Gewalt_ohne_Medien SP - 36 EP - 43 PB - Heise CY - Hannover ER - TY - CHAP A1 - Bittner, Peter A1 - Hornecker, Eva A1 - Twisselmann, Ute A1 - Weber, Karsten ED - Dittrich, Klaus T1 - Die berufliche Situation informatisch Handelnder in der ethischen Reflexion T2 - Informatik 2003 - Innovative Informatikanwendungen, Band 2 der Beiträge der 33. Jahrestagung der Gesellschaft für Informatik e.V. (GI), 29. September - 2. Oktober 2003 in Frankfurt am Main N2 - Ausgehend von einer Betrachtung des Einflusses von InformatikerInnen und ihren Handlungsmustern auf Arbeitsprozesse und vor dem Hintergrund einer kritischen Auseinandersetzung mit bisherigen berufsethischen Leitlinien wollen wir einen neuen Ansatz wagen, über Informatik und Verantwortung nachzudenken. Eine Rekonstruktion des Begriffs Verantwortung bietet uns ein reichhaltiges begriffliches Instrumentarium zur Reflexion des Verhältnisses von Verantwortung und informatischer Praxis. Wir plädieren dafür, dass informatisch Handelnde lernen müssen, ethische Probleme zu erkennen, implizite Annahmen von Arbeitskulturen zu durchschauen und ein Bewusstsein für die Veränderbarkeit dieser Arbeitskulturen entwickeln sollten. Zusätzlich bedarf es kollektiver und rechtlicher Veränderungen der Rahmenbedingungen für verantwortliches Handeln. Y1 - 2003 UR - https://dl.gi.de/handle/20.500.12116/29680 SP - 176 EP - 181 ER - TY - CHAP A1 - Weber, Karsten ED - Dittrich, Klaus T1 - Ethische Leitlinien: inhaltlich oder prozedural? T2 - Informatik 2003 - Innovative Informatikanwendungen, Band 2 der Beiträge der 33. Jahrestagung der Gesellschaft für Informatik e.V. (GI), 29. September - 2. Oktober 2003 in Frankfurt am Main N2 - Der neue Entwurf der ethischen Leitlinien nimmt in der Präambel Bezug auf die Allgemeine Erklärung der Menschenrechte der Vereinten Nationen; außerdem wird mit Artikel 11 die soziale Verantwortung von Informatikerinnen und Informatikern inhaltlich ausformuliert. Infrage steht nun, ob die Explizierung solcher moralischer Forderungen in den ethischen Leitlinien akzeptabel ist oder ob damit nicht deren Möglichkeiten überdehnt werden. Anders ausgedrückt: Sollen die ethischen Leitlinien rein prozedural ausgerichtet sein oder stattdessen konkrete Zielvorgaben formuliert werden? Um diese Frage zu beantworten, werden zunächst die genannten Alternativen der Formulierung dargestellt. Dem folgt eine kritische Auseinandersetzung mit dem neuen Artikel 11 und dem Bezug auf die Allgemeine Erklärung der Menschenrechte. Zuletzt werden Gründe und Bedingungen für die Akzeptabilität dieser und gegen eine Aufnahme weitergehender moralischer Forderungen genannt. Y1 - 2003 UR - https://dl.gi.de/handle/20.500.12116/29682 SP - 188 EP - 193 PB - Gesellschaft für Informatik e.V. CY - Bonn ER - TY - CHAP A1 - Weber, Karsten ED - Debatin, B. ED - Funiok, R. T1 - Medienethik und politische Ethik - der Versuch einer Grundlegung T2 - Kommunikations- und Medienethik. Grundlagen - Ansätze - Anwendungen Y1 - 2003 UR - https://www.researchgate.net/publication/263822273_Medienethik_und_politische_Ethik_-_der_Versuch_einer_Grundlegung SP - 97 EP - 110 PB - UVK-Verl.-Ges. CY - Konstanz ER - TY - CHAP A1 - Weber, Karsten ED - Busch, D. ED - Panasiuk, I. ED - Schröder, Hartmut T1 - Ethnische Minderheiten und das Recht auf freie Meinungsäußerung T2 - Medientransformationsprozesse, Gesellschaftlicher Wandel und Demokratisierung in Osteuropa, Dokumentation der Jahrestagung des Center for Advanced Central European Studies am 16., 17. und 18. Mai 2001 in Frankfurt (Oder) ; Wie sich die Bilder (an-)gleichen Y1 - 2003 SP - 57 EP - 71 PB - Peter Lang CY - Frankfurt/Main ER - TY - CHAP A1 - Weber, Karsten ED - Capurro, Rafael ED - Hausmanninger, Thomas T1 - Grundlagen der Informationsethik BT - Politische Philosophie als Ausgangspunkt informationsethischer Reflexion T2 - Netzethik - Grundlegungsfragen der Internetethik Y1 - 2002 UR - https://www.researchgate.net/publication/263821719_Grundlagen_der_Informationsethik SP - 141 EP - 156 PB - Fink CY - München ER - TY - CHAP A1 - Weber, Karsten ED - Weber, Karsten ED - Nagenborg, Michael ED - Spinner, Helmut F. T1 - Technikregime und (Gegen-)Information – Warum es nicht ausreicht, die "richtige" Architektur zu haben T2 - Wissensarten, Wissensordnung, Wissensregime. Beiträge zum Karlsruher Ansatz der integrierten Wissensforschung N2 - Glaubt man den Gazetten, so leben wir in einer Informations- bzw. in einer Wissensgesellschaft und nicht mehr in einer Agrar-, Industrie- oder Dienstleistungsgesellschaft. Letztere konnten jeweils daran erkannt werden, dass die Mehrheit der Beschäftigen entweder in der Landwirtschaft, in Industriebetrieben oder im Dienstleistungsgewerbe arbeiteten. Im Falle der Informations- bzw. Wissensgesellschaft ist es nicht so leicht, einen verlässlichen Indikator zu finden, der uns dazu berechtigen würde, bspw. im Falle der bundesrepublikanischen Gesellschaft eben von einer Informations- oder Wissensgesellschaft zu sprechen. Zwar ist der Anteil derer, die in Unternehmen der Informations- und Kommunikationstechnologie-Branche arbeiten, bezogen auf die Gesamtzahl der Beschäftigten in der Bundesrepublik Deutschland, nicht gering zu werten, doch die Mehrheit stellen sie kaum. Y1 - 2002 U6 - https://doi.org/10.1007/978-3-663-14883-8_8 PB - Leske+Budrich CY - Opladen ER - TY - CHAP A1 - Schubert, Martin J. W. A1 - Höfflinger, Bernd A1 - Zingg, René P. T1 - A New Analytical Charge Model for the Dual-Gate-Controlled Thin-Film SOI MOSFET T2 - Superlattices and Microstructures N2 - An analytical model for dual-gate-controlled SOI MOSFETs is presented, assuming uniformly doped p-silicon films. It is restricted to electron inversion layers and depletion regions, neglecting hole densities. It allows to account for the spatial description of electronic quantities in the silicon film. Due to the non-linearities of the semiconductor equations the model parameters must be extracted iteratively. Some applications are presented to demonstrate the usefulness of the model. Y1 - 1990 U6 - https://doi.org/10.1016/0749-6036(90)90218-V VL - 7 IS - 4 SP - 323 EP - 326 PB - Elsevier ER - TY - BOOK A1 - Brodersen, Folke A1 - Ebner, Sandra A1 - Schütz, Sandra T1 - "How to ...?" - Methodische Anregungen für quantitative Erhebungen mit Jugendlichen mit Behinderung. BT - Erkenntnisse aus dem Projekt "Inklusive Methoden" KW - Jugend KW - Behinderung KW - Empirische Sozialforschung KW - Quantitative Merthode Y1 - 2019 UR - https://www.dji.de/fileadmin/user_upload/bibs2019/DJI_Methodenstudie_Inklusion_Howto_27479.pdf SN - 978-3-86379-295-4 PB - Deutsches Jugendinstitut e.V. CY - München ER - TY - CHAP A1 - Schubert, Martin J. W. A1 - Blödel, J. A1 - Conradi, P. A1 - Lafosse, P. A1 - Nebel, W. A1 - Neusser, S. A1 - Ryba, M. A1 - Schröder, D. T1 - Extending EDIF for Technology Data T2 - EDIF World Conference, 1989, San Jose, CA, USA, 11.-14. September Y1 - 1989 ER - TY - CHAP A1 - Weber, Karsten ED - Schulz, W. K. T1 - Wissensarbeitsteilung in der Wissenschaftskommunikation T2 - Aspekte und Probleme der didaktischen Wissensstrukturierung Y1 - 1999 UR - https://www.researchgate.net/publication/263820155_Wissensarbeitsteilung_in_der_Wissenschaftskommunikation PB - Peter Lang CY - Frankfurt/Main ER - TY - THES A1 - Weiss, Matthias T1 - Labor Market Effects of Technological Change and Working Time Reduction BT - Some Insights from a General Equilibrium Perspective Y1 - 2003 ER - TY - THES A1 - Schubert, Martin J. W. T1 - Eindimensionale Modellierung von SOI MOSFETs Y1 - 1991 CY - Hamburg ER - TY - CHAP A1 - Schütz, Sandra A1 - Brodersen, Folke A1 - Ebner, Sandra A1 - Gaupp, Nora ED - Menold, Natalja ED - Wolbring, Tobias T1 - Qualitätssicherung bei der Befragung von Jugendlichen mit einer sogenannten geistigen Behinderung in sozialwissenschaftlichen Studien T2 - Qualitätssicherung sozialwissenschaftlicher Erhebungsinstrumente N2 - In aktuellen sozialwissenschaftlichen (Jugend-)Studien tauchen Jugendliche mit Behinderungen nicht oder nur randständig auf. Besonders marginalisiert erscheint die Gruppe der Jugendlichen mit sogenannter geistiger Behinderung. Dies widerspricht zum einen dem wissenschaftlichen Anspruch der Repräsentation, keine Gruppe systematisch aus Erhebungen auszuschließen. Zum anderen liegt ein aus der Politik und Fachpraxis stammender Bedarf an quantitativen Daten zu Lebenslagen von Jugendlichen mit Behinderungen vor. Die empirische Sozialforschung steht dabei u.a. vor der methodischen Herausforderung, wie Jugendliche mit sogenannter geistiger Behinderung angemessen und qualitätssichernd quantitativ befragt werden können. Dieser Frage geht der vorliegende Beitrag nach, indem er auf Basis der am Deutschen Jugendinstitut durchgeführten „Methodenstudie zur Entwicklung inklusiver Forschungsstrategien in der Jugendforschung am Beispiel von Freundschaften und Peerbeziehungen von Jugendlichen mit Behinderungen“ Aspekte der Qualitätssicherung bei der Befragung von Jugendlichen mit sogenannter geistiger Behinderung aufführt und die Ergebnisse in Beziehung zum bisherigen Forschungsstand setzt. Eine Diskussion um die Chancen und Grenzen der Selbstauskunft schließt den Beitrag. KW - Methodenforschung KW - Inklusion KW - Jugendliche mit sogenannter geistiger Behinderung KW - Qualitätssicherung KW - standardisierte Befragung Y1 - 2019 U6 - https://doi.org/10.1007/978-3-658-24517-7_12 SP - 371 EP - 406 PB - Springer VS CY - Berlin ER - TY - BOOK A1 - Schütz, Sandra T1 - Angehörigenbefragung in der Aphasiediagnostik BT - Grundlagen, Methoden, exemplarische Evaluation des Partner-Kommunikations-Fragebogens (PKF) N2 - Aphasie bedeutet nicht nur eine plötzlich auftretende Störung der Sprache, sondern auch eine Beeinträchtigung der Kommunikation mit psychosozialen Folgen für die Betroffenen und ihre Familien. Sandra Schütz setzt sich umfassend mit diesem Aspekt, der kommunikationsorientierten Aphasiediagnostik, auseinander: Sie vermittelt die Grundlagen des pragmatisch-funktionalen Ansatzes, beleuchtet verschiedene Untersuchungsmethoden, illustriert diese mit Testbeispielen und kritisiert deren Gütekriterien. Als unverzichtbar sieht die Autorin dabei die Befragung der Angehörigen, der "Experten des Alltags", an. Allerdings wurden die dazu verwendeten Fragebögen nicht oder nur unzureichend auf deren Qualitäten als Testverfahren überprüft. Daher untersucht die Autorin einen solchen: den Partner-Kommunikations-Fragebogen (PKF). Der Leser gewinnt so interessante Einblicke in dessen Evaluation. Das vorliegende Buch stellt zum einen für Sprachtherapeuten, die in der Klinik oder Praxis tätig sind, theoretisches Wissen und praktische Tipps zur kommunikationsorientierten Aphasiediagnostik bereit. Zum anderen empfiehlt es sich aufgrund der vorgestellten Studie sowohl für forschungsorientierte Kollegen, die Grundlagen- und Therapieuntersuchungen planen, als auch für Studierende, die hier für ihre eigene empirische Abschlussarbeit eine Orientierung finden. KW - Aphasie KW - Kommunikationsfähigkeit KW - Diagnostik KW - Logopädie KW - Angehöriger KW - Partner-Kommunikations-Fragebogen Y1 - 2012 SN - 978-3-8288-3079-0 N1 - Zugl.: München, Univ., Diss., 2012 u.d.T.: Schütz, Sandra: Angehörigenbefragung als integrativer Bestandteil der Aphasiediagnostik IS - 1. Auflage PB - Tectum CY - Marburg ER - TY - CHAP A1 - Brodersen, Folke A1 - Ebner, Sandra A1 - Schütz, Sandra A1 - Gaupp, Nora ED - Feyerer, Ewald ED - Prammer, Wilfried ED - Prammer-Semmler, Eva ED - Kladnik, Christine ED - Leibetseder, Margit ED - Wimberger, Richard T1 - Perspektive: Inklusive Jugendforschung. Multi-Modalität als Strategie zur Befragung von Jugendlichen mit Behinderungen T2 - System. Wandel. Entwicklung. Akteurinnen und Akteure inklusiver Prozesse im Spannungsfeld von Institution, Profession und Person Y1 - 2018 UR - https://elibrary.utb.de/doi/book/10.35468/9783781556287 SN - 978-3-7815-2225-1 SP - 349 EP - 354 PB - Klinkhardt CY - Bad Heilbrunn ER - TY - CHAP A1 - Kuntner, Katrin Petra A1 - Schütz, Sandra ED - Blechschmidt, Anja ED - Schräpler, Ute T1 - Che cosa? KOSA! Entwicklung und Evaluation des partizipativen Verfahrens „KOmmunikationsorientierte Selbstbeurteilung bei Aphasie" (KOSA) T2 - Aphasiediagnostik - Aktuelle Perspektiven Y1 - 2016 SP - 17 EP - 26 PB - Schwabe CY - Basel ER - TY - CHAP A1 - Böhm, Eva Theresa A1 - Schütz, Sandra ED - Sturm, Tanja ED - Köpfer, Andreas ED - Wagener, Benjamin T1 - Alle Steinchen zusammen ergeben erst ein Bild! BT - Der Mosaic Approach als methodischer Zugang in der Inklusionsforschung mit Kindern und Jugendlichen T2 - Bildungs- und Erziehungsorganisationen im Spannungsfeld von Inklusion und Ökonomisierung Y1 - 2016 SP - 127 EP - 136 PB - Klinkhardt CY - Bad Heilbrunn ER - TY - JOUR A1 - Gaupp, Nora A1 - Ebner, Sandra A1 - Schütz, Sandra A1 - Brodersen, Folke T1 - Quantitative Forschung mit Jugendlichen mit Behinderungen: Stand der Forschung, Entwicklungsbedarfe, Möglichkeiten und Grenzen einer inklusiven Jugendforschung JF - Inklusion-Online N2 - Im vorliegenden Beitrag wird der Forschungsstand zur Quantitativen Forschung mit Jugendlichen mit Behinderungen beleuchtet, auf Entwicklungsbedarfe hingewiesen und schließlich eine Diskussion um die Möglichkeiten und Grenzen einer inklusiven Jugendforschung geführt. KW - Inklusive Jugendforschung KW - Qualitative Forschung KW - Methodologie Y1 - 2018 UR - https://www.inklusion-online.net/index.php/inklusion-online/article/view/437 SN - 1862-5088 VL - Vol. 13 IS - No. 2 PB - Förderverein bidok Deutschland e.V. ER - TY - CHAP A1 - Schütz, Sandra ED - Sallat, Stephan ED - Spreer, Markus ED - Glück, Christian W. T1 - Kommunikationsorientierte Aphasietherapie BT - Nette Plauderstunde oder evidenzbasierte Intervention? T2 - Sprache professionell fördern: kompetent-vernetzt-innovativ KW - Aphasie KW - Therapie Y1 - 2014 UR - https://www.pedocs.de/volltexte/2016/11803/pdf/Sprache_professionell_foerdern.pdf SN - 978-3824811861 SP - 149 EP - 154 PB - Schulz-Kirchner-Verlag CY - Idstein ER - TY - JOUR A1 - Brodersen, Folke A1 - Ebner, Sandra A1 - Gaupp, Nora A1 - Küppers, Lara A1 - Schütz, Sandra T1 - Freizeitgestaltung von jungen Menschen mit Behinderungen - eine Forschungsperspektive inklusiver Jugendforschung JF - Die Berufliche Rehabilitation KW - Jugend KW - Behinderung KW - Freizeitverhalten Y1 - 2018 SN - 0931-0889 VL - 32 IS - 1 SP - 52 EP - 66 PB - Lambertus CY - Freiburg, Breisgau ER - TY - CHAP A1 - Biewer, Gottfried A1 - Böhm, Eva Theresa A1 - Schütz, Sandra ED - Biewer, Gottfried ED - Böhm, Eva Theresa ED - Schütz, Sandra T1 - Inklusive Pädagogik als Herausforderung und Chance in der Sekundarstufe T2 - Inklusive Pädagogik in der Sekundarstufe Y1 - 2015 SN - 978-3-17-029727-2 SP - 11 EP - 25 PB - Kohlhammer CY - Stuttgart ER - TY - JOUR A1 - Schütz, Sandra A1 - Leonhardt, Annette T1 - Die Situation inklusiv beschulter Jugendlicher mit Hörschädigung außerhalb der Schule (Freizeit) JF - Zeitschrift für Heilpädagogik Y1 - 2017 SN - 0513-9066 VL - 68 IS - 5 SP - 242 EP - 253 PB - Klinkhardt CY - Bad Heilbrunn ER - TY - JOUR A1 - Remiger, Teresa A1 - Schütz, Sandra A1 - Rupp, Eckert T1 - Smart durch ARTSS BT - Artikulations- und ReaktivierungsTraining für Sprachstörungen über Smartphone JF - Aphasie und verwandte Gebiete Y1 - 2016 SN - 1664-8595 VL - 43 IS - 2 SP - 13 EP - 25 ER - TY - CHAP A1 - Schütz, Sandra ED - Grohnfeldt (Hrsg.), Manfred T1 - Aphasie BT - Gemeinsamkeiten und Unterschiede T2 - Grundwissen der Sprachheilpädagogik und Sprachtherapie Y1 - 2014 SN - 978-3-17-025500-5 SP - 263 EP - 268 PB - Kohlhammer CY - Stuttgart ER - TY - JOUR A1 - Schütz, Cornelia A1 - Schütz, Sandra T1 - Ohne Krimi geht sie nie ins Bett! BT - Übungen zum kommunikativen Einsatz von Präpositionen in der Aphasietherapie JF - dgs-Sprachheilarbeit "Praxis Sprache" Y1 - 2014 UR - https://praxis-sprache.eu/heftarchiv/59-jahrgang-2014/heft-32014/#c70 IS - 3 SP - 185 EP - 186 ER - TY - JOUR A1 - Leienbach, Marie A1 - Corsten, Sabine A1 - Schütz, Sandra T1 - Der Zusammenhang zwischen sprachlichen Leistungen, Kommunikationsfähigkeit und Lebensqualität bei Aphasie JF - Aphasie und verwandte Gebiete Y1 - 2013 IS - 2 SP - 5 EP - 27 ER - TY - JOUR A1 - Schmidt, Karolina A1 - Schütz, Sandra T1 - Erste Untersuchung zur Wirksamkeit der PACE-Therapie bei der Förderung kommunikativer Strategien bei Demenz BT - eine Einzelfallstudie JF - dgs-Sprachheilarbeit "Praxis Sprache" Y1 - 2013 VL - 1 IS - 2 SP - 3 EP - 15 ER - TY - JOUR A1 - Schütz, Sandra T1 - Wie schätzen Partner die Kommunikationsfähigkeit ihrer aphasischen Angehörigen ein? BT - Eine Analyse der Angehörigen-Befragung am Beispiel des Partner-Kommunikations-Fragebogens (PKF) JF - LOGOS Interdisziplinär Y1 - 2012 VL - 20 IS - 4 SP - 274 EP - 285 ER - TY - JOUR A1 - Abels, Simone A1 - Schütz, Sandra T1 - "Fachdidaktik trifft Inklusive Pädagogik" BT - (Unausgeschöpfte) Potentiale in der LehrerInnenbildung JF - Zeitschrift für Heilpädagogik Y1 - 2016 VL - 67 IS - 9 SP - 425 EP - 436 ER - TY - JOUR A1 - Stiegert, Julia A1 - Schütz, Sandra T1 - Leben mit einer Aphasie BT - krankheitsverarbeitende Prozesse als Weg zu einer verbesserten Lebensqualität JF - Aphasie und verwandte Gebiete Y1 - 2013 IS - 2 SP - 28 EP - 53 ER - TY - JOUR A1 - Schütz, Sandra T1 - Erworbene Behinderung im Alter als Aufgabenfeld der Sonderpädagogik? BT - Erörterung der Thematik am Beispiel der Aphasie JF - Sonderpädagogische Förderung heute Y1 - 2013 VL - 58 IS - 1 SP - 53 EP - 69 ER - TY - JOUR A1 - Schütz, Sandra T1 - Buchrezension: Modellgeleitete Aphasietherapie bei lexikalischen Störungen. Konnektionistische Diagnostik in der Benenntherapie (Abel 2007) JF - Aphasie und verwandte Gebiete Y1 - 2008 IS - 3 SP - 65 EP - 66 ER - TY - JOUR A1 - Schütz, Sandra T1 - Buchrezension: Dysphagie. Strukturierte Angehörigenberatung in der funktionellen Dysphagietherapie (Hiller 2008) JF - Aphasie und verwandte Gebiete Y1 - 2009 IS - 2 SP - 65 EP - 67 ER - TY - JOUR A1 - Schütz, Sandra T1 - Sprachheilarbeit und Logopädie in Europa – Böhmische Dörfer? BT - Ein Kurzbericht über das „Annual Meeting of the Czech Logopedics“ JF - Die Sprachheilarbeit Y1 - 2005 VL - 50 IS - 2 ER - TY - JOUR A1 - Schütz, Sandra A1 - de Lange, Ernst G. T1 - Der Partner-Kommunikationsfragebogen (PKF) BT - Ein pragmatisch-funktionales Messverfahren in der Aphasiediagnostik JF - Die Sprachheilarbeit Y1 - 2010 IS - 6 SP - 282 EP - 290 ER - TY - JOUR A1 - Schütz, Sandra T1 - Buchrezension: Akute Aphasien (Nobis-Bosch et al. 2012) JF - Aphasie und verwandte Gebiete Y1 - 2013 IS - 2 SP - 88 EP - 90 ER - TY - JOUR A1 - Bauer, Angelika A1 - Schütz, Sandra T1 - Angehörigenfragebögen für die Aphasietherapie BT - Aphasie im familiären Alltag JF - Aphasie und verwandte Gebiete Y1 - 2011 IS - 1 SP - 41 EP - 50 ER - TY - JOUR A1 - Schütz, Sandra ED - Leonhardt, Annette ED - Pospischil, Melanie T1 - Buchrezension: Internationale Ansätze schulischer Inklusion JF - Sonderpädagogische Förderung heute Y1 - 2018 IS - 1 SP - 110 EP - 111 ER - TY - JOUR A1 - Schütz, Sandra T1 - Angehörigenfragebögen für die Aphasiediagnostik BT - Ein Vergleich JF - Aphasie und verwandte Gebiete Y1 - 2010 IS - 2 SP - 21 EP - 44 ER - TY - JOUR A1 - Schütz, Sandra T1 - Möglichkeiten der Angehörigenarbeit bei Aphasie BT - ein Überblick JF - Aphasie und verwandte Gebiete Y1 - 2009 IS - 3 SP - 27 EP - 40 ER - TY - GEN A1 - Brodersen, Folke A1 - Ebner, Sandra A1 - Schütz, Sandra T1 - Perspektive: Inklusive Jugendforschung! BT - Entwicklung inklusiver Strategien zur Befragung von Jugendlichen mit Behinderungen T2 - System. Wandel. Entwicklung. Akteurinnen und Akteure inklusiver Prozesse im Spannungsfeld von Institution, Profession und Person. Y1 - 2017 ER - TY - GEN A1 - Kuntner, Katrin Petra A1 - Schütz, Sandra T1 - Che cosa? KOSA! Entwicklung und Evaluation des partizipativen Verfahrens „Kommunikationsorientierte Selbstbeurteilung bei Aphasie“ (KOSA) als Perspektive in der Aphasiediagnostik T2 - Tagung Fachhochschule Nordwestschweiz, April 2016, Basel/Schweiz Y1 - 2016 ER - TY - GEN A1 - Brodersen, Folke A1 - Ebner, Sandra A1 - Schütz, Sandra T1 - Inklusive Methoden: Entwicklungsbedarfe in der quantitativen Forschung mit Jugendlichen mit Behinderungen T2 - Tagung "Jugend - Lebenswelt - Bildung. Perspektiven für Jugendforschung in Österreich", November 2017, Universität Innsbruck, Österreich Y1 - 2017 ER - TY - GEN A1 - Schütz, Sandra A1 - Brodersen, Folke A1 - Ebner, Sandra T1 - Qualitätssicherung in der quantitativen Befragung von Jugendlichen mit sog. Geistiger Behinderung T2 - Gemeinsame Tagung der Arbeitsgemeinschaft der Sozialwissenschaftlichen Institute und der Deutschen Gesellschaft für Soziologie, November 2017, Berlin Y1 - 2017 ER - TY - GEN A1 - Schütz, Sandra A1 - Ebner, Sandra T1 - Inklusive Forschungsmethoden in der empirischen Jugendforschung!? BT - Forschungsstand zu Befragungsmethoden und -strategien bei Jugendlichen mit Behinderungen T2 - DGfE-Sektionstagung Sonderpädagogik "Sonderpädagogik zwischen Wirksamkeitsforschung und Gesellschaftskritik", September 2016, Universität Paderborn Y1 - 2016 ER - TY - GEN A1 - Brodersen, Folke A1 - Ebner, Sandra A1 - Schütz, Sandra T1 - Inklusive Methoden bei der Befragung von Jugendlichen mit Sinnesbehinderungen T2 - 32. Internationale Jahrestagung der Inklusionsforscher*innen, Inklusion im Spannungsfeld von Normalität und Diversität, Februar 2018, Gießen Y1 - 2018 ER - TY - GEN A1 - Schütz, Sandra A1 - Ebner, Sandra T1 - Inklusive Methoden zur Befragung von Jugendlichen mit Behinderung. Ein neues Forschungsprojekt am Deutschen Jugendinstitut T2 - Vortrag am Netzwerktreffen "Treffen Netzwerk Inklusion", April 2017, Bayerischer Jugendring Y1 - 2017 PB - GMU CY - München ER - TY - GEN A1 - Brodersen, Folke A1 - Schütz, Sandra A1 - Ebner, Sandra T1 - Inklusive Befragungsmethoden. Perspektiven und Herausforderungen quantitativer Jugendforschung T2 - Vortragsreihe "Jugend und Inklusion", Juli 2017, LAG Selbsthilfe, München Y1 - 2017 ER - TY - CHAP A1 - Austin-Cliff, George A1 - Schütz, Sandra T1 - Inklusive Jugendforschung BT - Ausrichtung quantitativer Befragungen auf Jugendliche mit Behinderung T2 - Expert*innenaustausch "Leaving care. statistics under review KW - Inklusive Pädagogik Y1 - 2018 PB - BMFSFJ CY - Berlin ER - TY - CHAP A1 - Böhm, Eva Theresa A1 - Schütz, Sandra T1 - Alle Steinchen zusammen ergeben erst ein Bild! BT - Der Mosaic Approach als methodischer Zugang in der Inklusionsforschung mit Kindern und Jugendlichen T2 - 50. Arbeitstagung der Dozierenden der Sonderpädagogik in den deutschsprachigen Ländern "Bildungs- und Erziehungsorganisationen im Spannungsfeld von Inklusion und Ökonomisierung", Deutsche Gesellschaft für Erziehungswissenschaft (DGFE), Sektion Sonderpädagogik, September 2015, Basel/Schweiz Y1 - 2015 ER - TY - CHAP A1 - Schütz, Sandra T1 - "I will hang myself if our school will become an inclusive one!" BT - Teachers´ thoughts about inclusive schools and children who are (not) fitting T2 - Conference NNDR: Nordic Network on Disability research, 13., Mai 2015, Bergen/Norwegen Y1 - 2015 ER - TY - GEN A1 - Schütz, Sandra T1 - Signs of Hearing Loss in Early Childhood Y1 - 2016 ER - TY - CHAP A1 - Schütz, Sandra T1 - Kommunikationsorientierte Aphasietherapie BT - Nette Plauderstunde oder evidenzbasierte Intervention? T2 - Jahreskongress der deutschen Gesellschaft für Sprachheilpädagogik (dgs): Sprache professionell fördern: kompetent-vernetzt-innovativ, September 2014, Universität Leipzig Y1 - 2014 ER - TY - CHAP A1 - Schütz, Sandra T1 - Inklusive Schule und inklusive Lehrer/innenbildung T2 - Vortrag im Rahmen des Tempus-Projekts, Juli 2015, Universität Wien/Österreich Y1 - 2015 ER - TY - GEN A1 - Schütz, Sandra T1 - "Suddenly my language has left!" BT - Surving a stroke and living with aphasia: case examples, exchange of experiences, challenges and chances Y1 - 2014 N1 - Vortrag an der Addis Ababa University, Äthiopien, November 2014 ER - TY - GEN A1 - Schütz, Sandra T1 - Aphasia – An acquired neurogenic language disorder BT - Background, Impact and Possibilities Y1 - 2014 N1 - Vortrag an der Addis Ababa University, Äthiopien, November 2014 ER - TY - GEN A1 - Schütz, Sandra T1 - Aphasie. Einblicke in eine neurologisch bedingte Sprachstörung Y1 - 2014 N1 - Vortrag im Zentrum für Cerebralparesen (ICP) München, März 2014 ER - TY - GEN A1 - Schütz, Sandra T1 - Angehörigenberatung in der Logopädie Y1 - 2014 N1 - Vortrag an der Fachhochschule Nord-West-Schweiz FHNW, Institut für Spezielle Pädagogik, April 2014, Basel/Schweiz ER - TY - CHAP A1 - Schütz, Sandra T1 - Pragmatisch-funktionale Aphasiediagnostik T2 - Workshop für externe PraktikumsleiterInnen im Studiengang Sprachtherapie an der Ludwig-Maximilians-Universität, April 2010, München Y1 - 2010 ER - TY - CHAP A1 - Schütz, Sandra T1 - Kommunikationsorientierte Aphasiediagnostik durch Angehörigenbefragung BT - Evaluation des Partner-Kommunikations-Fragebogens (PKF) T2 - Tagung des Deutschen Logopädenverbandes (dbl), Mai 2013, Erfurt Y1 - 2013 ER - TY - GEN A1 - Schütz, Sandra A1 - Auer, Gaby T1 - Angehörige in die Aphasietherapie einbeziehen T2 - Würzburger Aphasie-Tage (WAT), März 2019, Würzburg/Deutschland Y1 - 2019 N1 - Workshop ER - TY - CHAP A1 - Schütz, Sandra T1 - Angehörigenbefragung als integrativer Bestandteil der Aphasiediagnostik T2 - Forum der Sprachheilpädagogik, März 2012, München Y1 - 2012 ER - TY - CHAP A1 - Schütz, Sandra T1 - Angehörigenarbeit bei Aphasie T2 - Workshop an der Hochschule Arnheim/Nijmegen, Studiengang Logopädie, Dezember 2012, Nijmegen/Niederlande Y1 - 2012 ER - TY - CHAP A1 - Schütz, Sandra T1 - Angehörigenarbeit bei Aphasie T2 - Workshop an der Hochschule Arnheim/Nijmegen, Studiengang Logopädie, Dezember 2011, Nijmegen/Niederlande Y1 - 2011 ER - TY - CHAP A1 - Schütz, Sandra T1 - Angehörigenbefragungen bei Aphasie- ein Vergleich T2 - Tagung der Klinischen Linguisten (BKL), Mai 2010, Freiburg i.Br Y1 - 2010 ER - TY - CHAP A1 - Schütz, Sandra T1 - "Was sagen Sie eigentlich dazu?" BT - Selbstbeurteilung der Kommunikationsfähigkeit bei Aphasie T2 - Tagung der Klinischen Linguisten (BKL), Mai 2012, Berlin Y1 - 2012 ER - TY - CHAP A1 - Schütz, Sandra T1 - Selbsteinschätzung bei Aphasie T2 - Würzburger Aphasie-Tage (WAT), März 2013, Würzburg/Deutschland Y1 - 2013 ER - TY - CHAP A1 - Schütz, Sandra A1 - Ovrutcki, Claudia T1 - A teacher´s log as an ethnographical source about processes in an inclusive classroom T2 - European Conference on Educational Research & Emerging Researchers´ Conference (ECER), September 2015, Budapest/Ungarn KW - Integrativer Unterricht Y1 - 2015 ER - TY - CHAP A1 - Kuntner, Katrin Petra A1 - Schütz, Sandra T1 - Praktische Anwendung der KOSA («KOmmunikationsorientierte Selbstbeurteilung bei Aphasie») T2 - Tagung Fachhochschule Nordwestschweiz, April 2016, Basel/Schweiz Y1 - 2016 ER - TY - CHAP A1 - Kuntner, Katrin Petra A1 - Schütz, Sandra T1 - "Wie sehen Sie das?" BT - Adäquater Einbezug von Menschen mit Aphasie in den sprachtherapeutischen Diagnostikprozess T2 - Würzburger Aphasie-Tage, 18., März 2015, Würzburg/Deutschland Y1 - 2015 N1 - Workshop ER - TY - CHAP A1 - Schütz, Sandra T1 - Kommunikationsorientierte Therapie bei Aphasie T2 - Seminar am Klinikum Christophsbad, Oktober 2014, Göppingen/Deutschland KW - Aphasie KW - Therapie Y1 - 2014 ER - TY - CHAP A1 - Schütz, Sandra T1 - Kommunikationsorientierte Aphasietherapie T2 - Forum der Sprachheilpädagogik, März 2012, München/Deutschland KW - Aphasie KW - Therapie Y1 - 2012 ER - TY - CHAP A1 - Schütz, Sandra A1 - Auer, Gaby T1 - Angehörigenarbeit bei Aphasie T2 - Würzburger Aphasie-Tage (WAT), März 2013, Würzburg/Deutschland Y1 - 2013 ER - TY - CHAP A1 - Schütz, Sandra A1 - Auer, Gaby T1 - Angehörigenarbeit bei Aphasie T2 - Würzburger Aphasie-Tage (WAT), März 2012, Würzburg/Deutschland Y1 - 2012 ER - TY - CHAP A1 - Schütz, Sandra T1 - Kommunikationsorientierte Therapie bei Aphasie T2 - LogopädInnen Oberösterreich, Februar 2015, Linz/Österreich Y1 - 2015 N1 - Workshop ER - TY - CHAP A1 - Schütz, Sandra T1 - Kommunikationsorientierte Aphasiediagnostik T2 - Workshop in der Fortbildungsreihe der Aphasie Suisse, September 2011, Luzern/Schweiz Y1 - 2011 ER - TY - GEN A1 - Schütz, Sandra T1 - Ist Inklusion messbar? BT - Quantitative Methoden in der Inklusionsforschung T2 - Internationale Jahrestagung der Integrations-/Inklusionsforscher_innen, "Inklusion ist die Antwort - was war nochmals die Frage?" (IFO), 29. Februar 2015, Martin-Luther-Universität Halle-Wittenberg/Deutschland Y1 - 2015 ER - TY - GEN A1 - Schütz, Sandra A1 - Ovrutcki, Claudia T1 - Ethnographic study in an inclusive classroom T2 - Inclusive and Supportive Education Congress Equity and Inclusion in Education (ISEC2015), 8th, Juli 2015, Lisbon/Portugal Y1 - 2015 ER - TY - JOUR A1 - Schubert, Martin J. W. A1 - Höfflinger, Bernd A1 - Schröder, D. A1 - Zingg, René P. T1 - 1D Modeling of SOI MOSFETs Using Distinct Quasi-Fermi Potentials JF - Microelectronic Engineering N2 - Distinct electron and hole quasi-Fermi potentials, øf,n and øf,p, are included into a one-dimensional SOI MOSFET model that accounts for finite inversion and depletion layer thicknesses. The inclusion of øf,n, øf,p in the nonlinear analytical model is demonstrated to describe phenomena like kink effect and the multistable-charge-controlled-memory effect (MCCM) in SOI MOSFETs. The calculation of øf,p(t) depends on the device history and generation/recombination rates. Y1 - 1991 U6 - https://doi.org/10.1016/0167-9317(91)90221-X VL - 15 IS - 1-4 SP - 237 EP - 240 ER - TY - BOOK ED - Biewer, Gottfried ED - Schütz, Sandra ED - Böhm, Eva Theresa T1 - Inklusive Pädagogik in der Sekundarstufe KW - Inklusive Pädagogik KW - Schulentwicklung KW - Sekundarstufe Y1 - 2015 SN - 978-3-17-029727-2 PB - Kohlhammer Verlag CY - Stuttgart ET - 1. Aufl. ER - TY - JOUR A1 - Mayrock, Oliver A1 - Mikhailov, Sergej A. A1 - Steffens, Oliver A1 - Rössler, Ulrich T1 - Observability of the acoustic plasma mode in double-layered quantum dots JF - Physica E: Low-dimensional Systems and Nanostructures N2 - Double-layered quantum dots represent a novel realization of a multi-component plasma system. By modelling the system and applying classical concepts we investigate the oscillator strength of the acoustic plasma mode and its dependence on the system parameters. In view of recent experimental results, we discuss the observability of this collective excitation. KW - Quantum dots KW - Collective excitations KW - Magneto-plasmon KW - Acoustic modes Y1 - 1997 U6 - https://doi.org/10.1016/S1386-9477(97)00048-9 VL - 1 IS - 1-4 SP - 232 EP - 234 ER - TY - JOUR A1 - Goldhacker, Markus A1 - Tomé, Ana Maria A1 - Greenlee, Mark W. A1 - Lang, Elmar Wolfgang T1 - Frequency-Resolved Dynamic Functional Connectivity Reveals Scale-Stable Features of Connectivity-States JF - Frontiers in Human Neuroscience N2 - Investigating temporal variability of functional connectivity is an emerging field in connectomics. Entering dynamic functional connectivity by applying sliding window techniques on resting-state fMRI (rs-fMRI) time courses emerged from this topic. We introduce frequency-resolved dynamic functional connectivity (frdFC) by means of multivariate empirical mode decomposition (MEMD) followed up by filter-bank investigations. In general, we find that MEMD is capable of generating time courses to perform frdFC and we discover that the structure of connectivity-states is robust over frequency scales and even becomes more evident with decreasing frequency. This scale-stability varies with the number of extracted clusters when applying k-means. We find a scale-stability drop-off from k = 4 to k = 5 extracted connectivity-states, which is corroborated by null-models, simulations, theoretical considerations, filter-banks, and scale-adjusted windows. Our filter-bank studies show that filter design is more delicate in the rs-fMRI than in the simulated case. Besides offering a baseline for further frdFC research, we suggest and demonstrate the use of scale-stability as a possible quality criterion for connectivity-state and model selection. We present first evidence showing that connectivity-states are both a multivariate, and a multiscale phenomenon. A data repository of our frequency-resolved time-series is provided. Y1 - 2018 U6 - https://doi.org/10.3389/fnhum.2018.00253 SN - 1662-5161 VL - 12 SP - 1 EP - 16 PB - Frontiers Research Foundation CY - Lausanne ER - TY - JOUR A1 - Goldhacker, Markus A1 - Keck, P. A1 - Igel, A. A1 - Lang, Elmar Wolfgang A1 - Tomé, Ana Maria T1 - A multi-variate blind source separation algorithm JF - Computer Methods and Programs in Biomedicine N2 - Background and objective The study follows the proposal of decomposing a given data matrix into a product of independent spatial and temporal component matrices. A multi-variate decomposition approach is presented, based on an approximate diagonalization of a set of matrices computed using a latent space representation. Methods The proposed methodology follows an algebraic approach, which is common to space, temporal or spatiotemporal blind source separation algorithms. More specifically, the algebraic approach relies on singular value decomposition techniques, which avoids computationally costly and numerically instable matrix inversion. The method is equally applicable to correlation matrices determined from second order correlations or by considering fourth order correlations. Results The resulting algorithms are applied to fMRI data sets either to extract the underlying fMRI components or to extract connectivity maps from resting state fMRI data collected for a dynamic functional connectivity analysis. Intriguingly, our algorithm shows increased spatial specificity compared to common approaches, while temporal precision stays similar. Conclusion The study presents a novel spatiotemporal blind source separation algorithm, which is both robust and avoids parameters that are difficult to fine tune. Applied on experimental data sets, the new method yields highly confined and focused areas with least spatial extent in the retinotopy case, and similar results in the dynamic functional connectivity analyses compared to other blind source separation algorithms. Therefore, we conclude that our novel algorithm is highly competitive and yields results, which are superior or at least similar to existing approaches. KW - Blind source separation KW - Independent component analysis KW - fMRI KW - Resting state KW - Retinotopy KW - Spatio temporal Y1 - 2017 U6 - https://doi.org/10.1016/j.cmpb.2017.08.019 SN - 1872-7565 SN - 0169-2607 VL - 151 SP - 91 EP - 99 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Finckh, Wolfgang A1 - Kipp, Sandra T1 - Erfahrungen bei der Planung und Ausführung von Ortbetonschachtbaugruben JF - Bauingenieur N2 - Im Rahmen der Erstellung und Nutzung von Tunnel und Leitungsbauwerken ist oft eine Planung und Ausführung von Ortbetonschachtbaugruben notwendig. Diese Ingenieurbauaufgabe erfordert aufgrund der zahlreichen Randbedingungen eine gute Interaktion zwischen Ausführenden und Planer, um allen Anforderungen aus Statik, Baubetrieb, Vortrieb, Ausbau sowie späterer Nutzung gerecht zu werden. Mit der Auswahl eines geeigneten Bauverfahrens, einer günstigen Geometrie zusammen mit einer realitätsnahen Berechnung kann für jede Schachtbaugruben eine optimale sichere und wirtschaftliche Lösung gefunden werden. Dieser Artikel gibt zahlreiche Hinweise um dieses Optimum zu erreichen. KW - Auftriebssicherheit KW - Baugrubenverbau KW - Berechnungsannahme KW - Berechnungsverfahren KW - Bohrpfahlwand KW - Entwurf KW - Finite-Elemente-Methode KW - Geometrie KW - Hydraulischer Grundbruch KW - Konstruktionselement KW - Nachweis KW - Ortbetonbauweise KW - Planung KW - Schachtbau KW - Schlitzwand KW - Verbauwand Y1 - 2014 VL - 89 IS - 1 SP - 11 EP - 19 PB - VDI Fachmedien ER - TY - JOUR A1 - Bulenda, Thomas T1 - Arnoldi (IOM) - Newton Algorithm for Pathfollowing in Nonlinear Statics JF - Computers & Structures N2 - This paper firstly explains the basics of pathfollowing in nonlinear statics. It then discusses the four general approaches for solving the occurring sets of linear equations. As a result we introduce an Arnoldi (IOM)—Newton algorithm which has a wide range of application and is highly efficient, as it adapts its effort to the progress of the computation. Two examples are given to prove the good performance of the algorithm. KW - Finite Elemente KW - Kurvenverfolgung KW - Nichtlinearität, Stabilität KW - Schalen Y1 - 1997 U6 - https://doi.org/10.1016/S0045-7949(96)00081-8 VL - 63 IS - 4 SP - 813 EP - 826 ER - TY - JOUR A1 - Zilch, Konrad A1 - Finckh, Wolfgang A1 - Niedermeier, Roland A1 - Wiens, Udo T1 - DAfStb-Richtlinie: Verstärken von Betonbauteilen mit geklebter Bewehrung – Teil 1: Bemessung und Konstruktion JF - Bauingenieur Y1 - 2011 VL - 86 IS - 5 SP - 197 EP - 206 PB - VDI-Verlag ER - TY - JOUR A1 - Zilch, Konrad A1 - Niedermeier, Roland A1 - Finckh, Wolfgang T1 - Bauteilspezifische Effekte auf die Verbundkraftübertragung von mit aufgeklebten CFK-Lamellen verstärkten Betonbauteilen JF - Bauingenieur Y1 - 2010 VL - 85 IS - 2 SP - 97 EP - 104 PB - Springer-VDI-Verlag ER - TY - JOUR A1 - Finckh, Wolfgang A1 - Zilch, Konrad T1 - Strengthening and Rehabilitation of Reinforced Concrete Slabs with Carbon-Fiber Reinforced Polymers Using a Refined Bond Model JF - Computer-Aided Civil and Infrastructure Engineering N2 - Slabs are one of the main load-bearing elements in nearly every structure. Because of additional live loads or modifications of the building structure these slabs often have to be strengthened. Using externally bonded carbon-fiber reinforced polymer (CFRP) strips to strengthen existing concrete structures has become common practice. One of the main failure modes is the loss of the composite action between the concrete and the CFRP strip making the bond force transfer very important. This bond force transfer depends on many parameters including the concrete strength, the ratio between shear force, and bending moment. A new parameter recently discovered by the Technische Universität München (TUM) is the deflection of the structural elements themselves. Because of this deflection self-inducted contact pressure occurs. This contact pressure affects a higher bond transfer. The lower effective depth of slabs compared to beams causes higher deflections. In this article, first a few principles on the strengthening with adhesive-bonded CFRP strips and the characteristics of the bond are explained. Then, the basics of the bond force transfer, at the end anchorage and in the rest of the element, are summarized. Based on these essentials, as well as numerous experiments, the change in the bond force transfer at the structural element caused by the curvature is then derived. With these findings, a complete verification concept is presented, which is ideal for computerized calculations. This verification concept is finally compared to several full-scale test results presented in pertinent literature. Y1 - 2012 U6 - https://doi.org/10.1111/j.1467-8667.2011.00752.x VL - 27 IS - 5 SP - 333 EP - 346 PB - Wiley ER - TY - THES A1 - Finckh, Wolfgang T1 - Einfluss bauteilspezifischer Effekte auf die Bemessung von mit CFK-Lamellen verstärkten Stahlbetonbauteilen N2 - Die vorliegende Arbeit beschäftigt sich mit dem Tragverhalten von mit kohlenstofffaserverstärkter Kunststoff Lamellen (CFK-Lamellen) biegeverstärkten Betonbauteilen. Ein wesentlicher Fokus dieser Arbeit liegt dabei auf dem Verbundverhalten aufgeklebter CFK-Lamellen und der damit verbundenen Verbundkraftübertragung am Bauteil. Dazu werden auf Grundlage von zahlreichen eigenen experimentellen Untersuchungen verschiedene bekannte Modelle miteinander kombiniert und um bauteilspezifische Effekte erweitert. Dadurch kann erstmals ein geschlossenes, realitätsnahes sowie vollständig mechanisch begründetes Bemessungsmodell für mit aufgeklebten CFK-Lamellen biegeverstärkte Betonbauteile angegeben werden. Im Rahmen der Arbeit wird gezeigt, dass das so entwickelte Bemessungsmodell das Tragverhalten von zahlreichen Bauteilversuchen an unterschiedlichen statischen Systemen mit unterschiedlichsten Bauteilabmessungen und Bewehrungsführungen gut beschreiben kann. Aufbauend auf dem entwickelten Bemessungsmodell werden mithilfe von Simulationen auf der sicheren Seite liegende vereinfachte Ingenieurmodelle für eine schnelle und einfache Bemessung angegeben. Neben der Verbundkraftübertragung der aufgeklebten CFK-Lamellen, welche erstmals in Abhängigkeit der Bauteilverformungen und der Querkrafteinflüsse beschrieben wird, werden in der Arbeit auch das Querkrafttragverhalten, die Rissbildung sowie die Schnittgrößenumlagerung von mit aufgeklebten und in Schlitze ver- klebten CFK-Lamellen verstärkten Betonbauteilen betrachtet. Somit steht mit dieser Arbeit ein vollständiges Bemessungskonzept für mit CFK-Lamellen biegeverstärkten Betonbauteilen unter statischer Belastung zur Verfügung. Y1 - 2012 UR - https://mediatum.ub.tum.de/doc/1083989/1083989.pdf N1 - Technische Universität München, Dissertation CY - München ER - TY - CHAP A1 - Lier, Alexander A1 - Franke, Linus A1 - Stamminger, Marc A1 - Selgrad, Kai ED - Durand, Irène T1 - A Case Study in Implementation-Space Exploration T2 - Proceedings of the 9th European Lisp Symposium (ELS 2016) ; AGH University of Science and Technology, Kraków, Poland, May 9 - 10, 2016 N2 - In this paper we show how a feature-oriented development methodology can be exploited to investigate a large set of possible implementations for a real-time rendering algorithm. We rely on previously published work to explore potential dimensions of the implementation space of an algorithm to be run on a graphics processing unit (GPU) using CUDA. The main contribution of our paper is to provide a clear example of the benefit to be gained from existing methods in a domain that only slowly moves toward higher level abstractions. Our method employs a generative approach and makes heavy use of Common Lisp-macros before the code is ultimately transformed to CUDA. Y1 - 2016 UR - https://selgrad.org/publications/2016_els_LFSS.pdf SN - 978-2-9557474-0-7 SP - 83 EP - 90 PB - ACM CY - New York, NY, USA ER - TY - BOOK A1 - Zilch, Konrad A1 - Niedermeier, Roland A1 - Finckh, Wolfgang T1 - Sachstandbericht Verstärken von Betonbauteilen mit geklebter Bewehrung N2 - Das nachträgliche Verstärken von bestehenden Bauteilen ist eine häufig auftretende Problemstellung, die durch das Aufkleben von zusätzlicher Bewehrung gelöst werden kann. An der Tragweise der geklebten Bewehrung wird seit den 60er Jahren intensiv geforscht. Die erste bauaufsichtliche Zulassung wurde 1979 vom DIBt erteilt. Seit dieser Zeit hat sich die Bauweise in der Praxis etabliert und immer weitere Anwendungsmöglichkeiten, Materialien und Verfahren wurden entdeckt. An den Forschungsstellen wurden mithilfe von zahlreichen Versuchen immer bessere Modelle für die Tragweise entwickelt. Das Tragverhalten aufgeklebter Bewehrung wird durch den mäßigen Verbund zwischen der geklebten Bewehrung und dem Beton bestimmt, was besondere Bemessungsansätze nötig macht. Im Rahmen der Erstellung dieses Sachstandberichtes wurden zahlreiche Bauteil- und Verbundversuche mit geklebter Bewehrung in einer Datenbank gesammelt. Die gängigen nationalen und internationalen Modelle sowie Bemessungsvorschriften sind in diesem Sachstandbericht nach Themen geordnet aufgelistet und wurden mit den Versuchswerten aus der Datenbank gegengerechnet und verglichen. Y1 - 2011 SN - 978-3-410-65193-2 PB - Beuth CY - Berlin ER - TY - BOOK A1 - Zilch, Konrad A1 - Niedermeier, Roland A1 - Finckh, Wolfgang T1 - Verankerung von aufgeklebten Stahllaschen im Bereich von Biegemomenten mit wechselnden Vorzeichen N2 - Bei durchlaufenden verstärkten Stahlbetonkonstruktionen kann es aufgrund der ungünstigen Anordnung der Verkehrslasten im Bereich der Verankerung der aufgeklebten Bewehrung zu einem Vorzeichenwechsel des Momentes bei unterschiedlichen Lastfällen kommen. Dies führt dazu, dass die aufgeklebte Verstärkung in einem bestimmten Bereich sowohl Zug- wie auch Druckkräften ausgesetzt ist. Im Rahmen dieses Forschungsberichtes werden zunächst bisherige Untersuchungen, welche diese Problemstellung tangieren, betrachtet. Darauf aufbauend werden Verbunddruckversuche mit unterschiedlich dicken Stahllaschen durchgeführt, um das Verhalten des Verbundes unter Druckbeanspruchung zu untersuchen. Zur Verifizierung der Versuchsergebnisse sowie zur Erfassung weiterer bauteilspezifischer Effekte werden zwei Versuche an einem Durchlaufträger durchgeführt in welchem die Stahllaschen bis weit in den Druckbereich verankert waren. Aufgrund der durchgeführten experimentellen Untersuchungen werden abschließend Empfehlungen für den Umgang mit dieser Problemstellung in der Bemessung gegeben. Y1 - 2012 SN - 978-3-8167-8821-8 PB - Fraunhofer IRB Verlag CY - Stuttgart ER - TY - BOOK A1 - Zilch, Konrad A1 - Niedermeier, Roland A1 - Finckh, Wolfgang T1 - Praxisgerechte Bemessungsansätze für das wirtschaftliche Verstärken von Betonbauteilen mit geklebter Bewehrung BT - Querkrafttragfähigkeit KW - Stahlbetonbauteil KW - Bewehrung KW - Bemessung KW - Verbundverhalten KW - Kohlenstofffaserverstärkter Kunststoff KW - Tragfähigkeit KW - Lamelle Y1 - 2012 SN - 978-3-410-65205-2 PB - Beuth CY - Berlin ER - TY - THES A1 - Bulenda, Thomas T1 - Behandlung nichtlinearer Lösungspfade in der Statik mit Hybriden Krylov-Newton-Verfahren KW - Finite Elemente KW - Kurvenverfolgung KW - Nichtlinearität KW - Schalen KW - Stabilität KW - Strukturmechanik KW - Nichtlineares Phänomen KW - Krylov-Verfahren Y1 - 1993 N1 - Technische Universität München, Dissertation CY - München ER - TY - BOOK A1 - Zilch, Konrad A1 - Niedermeier, Roland A1 - Finckh, Wolfgang T1 - Praxisgerechte Bemessungsansätze für das wirtschaftliche Verstärken von Betonbauteilen mit geklebter Bewehrung BT - Verbundtragfähigkeit unter statischer Belastung Y1 - 2012 SN - 978-3-410-65202-1 PB - Beuth CY - Berlin ER - TY - CHAP A1 - Selgrad, Kai A1 - Lier, Alexander A1 - Köferl, Franz A1 - Stamminger, Marc A1 - Lohmann, Daniel ED - Kästner, Christian ED - Gokhālé, Anirüddhā T1 - Lightweight, Generative Variant Exploration for High-performance Graphics Applications T2 - GPCE'15 : Proceedings of the 2015 ACM SIGPLAN International Conference on Generative Programming: Concepts and Experiences ; October 26-27, 2015, Pittsburgh, PA, USA N2 - Rendering performance is an everlasting goal of computer graphics and significant driver for advances in both, hardware architecture and algorithms. Thereby, it has become possible to apply advanced computer graphics technology even in low-cost embedded appliances, such as car instruments. Yet, to come up with an efficient implementation, developers have to put enormous efforts into hardware/problem-specific tailoring, fine-tuning, and domain exploration, which requires profound expert knowledge. If a good solution has been found, there is a high probability that it does not work as well with other architectures or even the next hardware generation. Generative DSL-based approaches could mitigate these efforts and provide for an efficient exploration of algorithmic variants and hardware-specific tuning ideas. However, in vertically organized industries, such as automotive, suppliers are reluctant to introduce these techniques as they fear loss of control, high introduction costs, and additional constraints imposed by the OEM with respect to software and tool-chain certification. Moreover, suppliers do not want to share their generic solutions with the OEM, but only concrete instances. To this end, we propose a light-weight and incremental approach for meta programming of graphics applications. Our approach relies on an existing formulation of C-like languages that is amenable to meta programming, which we extend to become a lightweight language to combine algorithmic features. Our method provides a concise notation for meta programs and generates easily sharable output in the appropriate C-style target language. KW - exploratory programming KW - general purpose code generation KW - prototyping KW - ray tracin Y1 - 2015 UR - https://selgrad.org/publications/2015_gpce_SLKSL.pdf SN - 978-1-4503-3687-1 SP - 141 EP - 150 PB - ACM CY - New York, USA ER - TY - CHAP A1 - Benthin, Carsten A1 - Woop, Sven A1 - Niessner, Matthias A1 - Selgrad, Kai A1 - Wald, Ingo T1 - Efficient Ray Tracing of Subdivision Surfaces Using Tessellation Caching T2 - Proceedings of the 7th Conference on High-Performance Graphics (HPG '15) N2 - A common way to ray trace subdivision surfaces is by constructing and traversing spatial hierarchies on top of tessellated input primitives. Unfortunately, tessellating surfaces requires a substantial amount of memory storage, and involves significant construction and memory I/O costs. In this paper, we propose a lazy-build caching scheme to efficiently handle these problems while also exploiting the capabilities of today's many-core architectures. To this end, we lazily tessellate patches only when necessary, and utilize adaptive subdivision to efficiently evaluate the underlying surface representation. The core idea of our approach is a shared lazy evaluation cache, which triggers and maintains the surface tessellation. We combine our caching scheme with SIMD-optimized subdivision primitive evaluation and fast hierarchy construction over the tessellated surface. This allows us to achieve high ray tracing performance in complex scenes, outperforming the state of the art while requiring only a fraction of the memory. In addition, our method stays within a fixed memory budget regardless of the tessellation level, which is essential for many applications such as movie production rendering. Beyond the results of this paper, we have integrated our method into Embree, an open source ray tracing framework, thus making interactive ray tracing of subdivision surfaces publicly available. KW - caching KW - ray tracing KW - Subdivision Surfaces Y1 - 2015 SN - 978-1-4503-3707-6 U6 - https://doi.org/10.1145/2790060.2790061 SP - 5 EP - 12 PB - ACM CY - New York, NY, USA - via ACM DL ER - TY - CHAP A1 - Selgrad, Kai A1 - Lier, Alexander A1 - Dörntlein, Jan A1 - Reiche, Oliver A1 - Stamminger, Marc ED - Durand, Irène T1 - A High-Performance Image Processing DSL for Heterogeneous Architectures T2 - Proceedings of the 9th European Lisp Symposium (ELS 2016), Krakow, Poland N2 - Over the last decade a number of high performance, domain-specific languages (DSLs) have started to grow and help tackle the problem of ever diversifying hard- and software employed in fields such as HPC (high performance computing), medical imaging, computer vision etc. Most of those approaches rely on frameworks such as LLVM for efficient code generation and, to reach a broader audience, take input in C-like form. In this paper we present a DSL for image processing that is on-par with competing methods, yet its design principles are in strong contrast to previous approaches. Our tool chain is much simpler, easing the burden on implementors and maintainers, while our output, C-family code, is both adaptable and shows high performance. We believe that our methodology provides a faster evaluation of language features and abstractions in the domains above. KW - Common Lisp KW - Domain Specific Langauges KW - Generative Programming KW - Meta Programming Y1 - 2016 UR - https://selgrad.org/publications/2016_els_SLDRS.pdf SN - 978-2-9557474-0-7 SP - 39 EP - 46 PB - ACM CY - New York, NY, USA ER - TY - CHAP A1 - Hofmann, Nikolai A1 - Bogendörfer, Phillip A1 - Stamminger, Marc A1 - Selgrad, Kai T1 - Hierarchical Multi-layer Screen-space Ray Tracing T2 - Proceedings of High Performance Graphics (HPG '17), July 28 - 30, 2017, Los Angeles California N2 - In this paper we present a method for fast screen-space ray tracing. Single-layer screen-space ray marching is an established tool in high-performance applications, such as games, where plausible and appealing results are more important than strictly correct ones. However, even in such tightly controlled environments, missing scene information can cause visible artifacts. This can be tackled by keeping multiple layers of screen-space information, but might not be afforable on severely limited time-budgets. Traversal speed of single-layer ray marching is commonly improved by multi-resolution schemes, from sub-sampling to stepping through mip-maps to achieve faster frame rates. We show that by combining these approaches, keeping multiple layers and tracing on multiple resolutions, images of higher quality can be computed rapidly. Figure 1 shows this for two scenes with multi-bounce reflections that would show strong artifacts when using only a single layer. KW - Multi-Layer KW - real-time rendering KW - Screen-Space Ray Tracing Y1 - 2017 SN - 978-1-4503-5101-0 U6 - https://doi.org/10.1145/3105762.3105781 SP - 1 EP - 10 PB - ACM CY - New York, NY, USA ER - TY - CHAP A1 - Nießner, Matthias A1 - Kuhnert, Nadine A1 - Selgrad, Kai A1 - Stamminger, Marc A1 - Michelson, Georg T1 - Real-time Simulation of Human Vision using Temporal Compositing with CUDA on the GPU T2 - Proceedings 25th Workshop on Parallel Systems and Algorithms 2013 (PARS) ; April 11-12, 2013, Erlangen, Germany N2 - We present a novel approach that simulates human vision including visual defects such as glaucoma by temporal composition of human vision in real-time on the GPU. Therefore, we determine eye focus points every time step and adapt the lens accommodation of our virtual eye model accordingly. The focal distance is then used to determine bluriness of observed scene regions; i.e., we compute defocus for all visible pixels. In order to simulate the visual memory we introduce a sharpness field where we integrate defocus values temporally. That allows for memorizing sharply perceived scene points. For visualization, we ray trace the virtual scene environment while incorporating depth of field based on the sharpness field data. Thus, our algorithm facilitates the simulation of human vision mimicing the visual memory. We consider this to be particularly useful for illustration purposes for patients with visual defects such as glaucoma. In order to run our algorithm in real-time we employ massively parallel graphics hardware. Y1 - 2013 UR - https://selgrad.org/publications/2013_pars_NKSSM.pdf ER - TY - CHAP A1 - Selgrad, Kai A1 - Reintges, Christian A1 - Penk, Dominik A1 - Wagner, Pascal A1 - Stamminger, Marc T1 - Real-time Depth of Field Using Multi-layer Filtering T2 - Proceedings of the 19th Symposium on Interactive 3D Graphics and Games (i3D '15), 27 February 2015 - 1 March 2015, San Francisco California N2 - We present a novel technique for rendering depth of field that addresses difficult overlap cases, such as close, but out-of-focus, geometry in the near-field. Such scene configurations are not managed well by state-of-the-art post-processing approaches since essential information is missing due to occlusion. Our proposed algorithm renders the scene from a single camera position and computes a layered image using a single pass by constructing per-pixel lists. These lists can be filtered progressively to generate differently blurred representations of the scene. We show how this structure can be exploited to generate depth of field in real-time, even in complicated scene constellations. KW - depth of field KW - real-time KW - layers KW - rendering Y1 - 2015 SN - 978-1-4503-3392-4 U6 - https://doi.org/10.1145/2699276.2699288 SP - 121 EP - 127 PB - ACM CY - New York, NY, USA ER - TY - CHAP A1 - Selgrad, Kai A1 - Müller, Jonas A1 - Stamminger, Marc ED - Giachetti, Andrea ED - Biasotti, Silvia ED - Tarini, Marco T1 - Faster Ray-Traced Shadows for Hybrid Rendering of Fully Dynamic Scenes by Pre-BVH Culling T2 - Smart Tools and Apps for Graphics - Eurographics Italian Chapter Conference N2 - With ever increasing ray traversal and hierarchy construction performance the application of ray tracing to problems often tackled by rasterization-based algorithms is becoming a viable alternative. This is especially desirable as the ground truth for these algorithms is often determined by using ray tracing and thus directly applying it is the simplest way to generate images satisfying the reference. In this paper we propose a very efficient pre-process to speed up the construction and traversal of sub-optimal, but fast-to-build hierarchies used for interactive ray tracing and show how it can be applied to shadow rays in a hybrid environment, where ray tracing is used to sample area lights for scene positions found and shaded via rasterization. Y1 - 2015 SN - 978-3-905674-97-2 U6 - https://doi.org/10.2312/stag.20151295 PB - The Eurographics Association ER - TY - CHAP A1 - Lier, Alexander A1 - Selgrad, Kai A1 - Stamminger, Marc ED - Alberto Riva, T1 - DIY Meta Languages with Common Lisp T2 - Proceedings of the 10th European Lisp Symposium (ELS 2017), Vrije Universiteit Brussel, Brussels, Belgium, April, 3-4 2017 N2 - In earlier work we described C-Mera, an S-Expression to C-style code transformator, and how it can be used to provide high-level abstractions to the C-family of programming languages. In this paper we provide an in-depth description of its internals that would have been out of the scope of the earlier presentations. Œese implementation details are presented as a toolkit of general techniques for implementing similar meta languages on top of Common Lisp and illustrated on the example of C-Mera, with the goal of making our experience in implementing them more broadly available. KW - Macros KW - Code Generation KW - Common Lis KW - Meta Programmin Y1 - 2017 UR - https://selgrad.org/publications/2017_els_LSS.pdf SN - 978-2-9557474-1-4 SP - 72 EP - 79 PB - ACM CY - New York, NY, USA ER - TY - CHAP A1 - Selgrad, Kai A1 - Lier, Alexander A1 - Wittmann, Markus A1 - Lohmann, Daniel A1 - Stamminger, Marc T1 - Defmacro for C: Lightweight, Ad Hoc Code Generation T2 - Proceedings of ELS 2014 7th European Lisp Symposium ; May 5 - 6 2014, IRCAM, Paris, France N2 - We describe the design and implementation of CGen, a C code generator with support for Common Lisp-style macro expansion. Our code generator supports the simple and efficient management of variants, ad hoc code generation to capture reoccurring patterns, composable abstractions as well as the implementation of embedded domain specific languages by using the Common Lisp macro system. We demonstrate the applicability of our approach by numerous examples from small scale convenience macros over embedded languages to real-world applications in high-performance computing. KW - Meta Programming KW - Code Generation KW - Common Lisp KW - Configurability KW - Macro KW - Maintenance Y1 - 2014 UR - https://european-lisp-symposium.org/static/proceedings/2014.pdf SN - 2677-3465 SP - 80 EP - 87 ER - TY - JOUR A1 - Pit, Sabrina A1 - Fisk, Malcolm A1 - Freihaut, Winona A1 - Akintunde, Fashola A1 - Aloko, Bamidele A1 - Berge, Britta A1 - Burmeister, Anne A1 - Ciacâru, Adriana A1 - Deller, Jürgen A1 - Dulmage, Rae A1 - Han, Tae Hwa A1 - Hao, Qiang A1 - Honeyman, Peter A1 - Huber, Peter C. A1 - Linner, Thomas A1 - Lundberg, Stefan A1 - Nwamara, Mofoluwaso A1 - Punpuing, Kamolpun A1 - Schramm, Jennifer A1 - Yamada, Hajime A1 - Yap, Jason C. H. T1 - COVID-19 and the ageing workforce: global perspectives on needs and solutions across 15 countries JF - International Journal for Equity in Health volume N2 - BACKGROUND: COVID-19 has a direct impact on the employment of older people. This adds to the challenge of ageism. The World Health Organization has started a worldwide campaign to combat ageism and has called for more research and evidence-based strategies that have the potential to be scaled up. This study specifically aims to identify solutions to combat the adverse effects of COVID-19 on the global ageing workforce. METHODS: We present 15 case studies from different countries and report on what those countries are doing or not doing to address the impact of COVID-19 on ageing workers. RESULTS: We provide examples of how COVID-19 influences older people's ability to work and stay healthy, and offer case studies of what governments, organizations or individuals can do to help ensure older people can obtain, maintain and, potentially, expand their current work. Case studies come from Australia, Austria, Canada, China, Germany, Israel, Japan, Nigeria, Romania, Singapore, Sweden, South Korea, Thailand, United Kingdom (UK), and the United States (US). Across the countries, the impact of COVID-19 on older workers is shown as widening inequalities. A particular challenge has arisen because of a large proportion of older people, often with limited education and working in the informal sector within rural areas, e.g. in Nigeria, Thailand and China. Remedies to the particular disadvantage experienced by older workers in the context of COVID are presented. These range from funding support to encouraging business continuity, innovative product and service developments, community action, new business models and localized, national and international actions. The case studies can be seen as frequently fitting within strategies that have been proven to work in reducing ageism within the workplace. They include policy and laws that have increased benefits to workers during lockdowns (most countries); educational activities such as coaching seniorpreneurship (e,g, Australia); intergenerational contact interventions such as younger Thai people who moved back to rural areas and sharing their digital knowledge with older people and where older people reciprocate by teaching the younger people farming knowledge. CONCLUSION: Global sharing of this knowledge among international, national and local governments and organizations, businesses, policy makers and health and human resources experts will further understanding of the issues that are faced by older workers. This will facilitate the replication or scalability of solutions as called for in the WHO call to combat ageism in 2021. We suggest that policy makers, business owners, researchers and international organisations build on the case studies by investing in evidence-based strategies to create inclusive workplaces. Such action will thus help to challenge ageism, reduce inequity, improve business continuity and add to the quality of life of older workers. KW - Aged KW - Aging KW - Communicable Disease Control KW - COVID-19 KW - Humans KW - Quality of Life KW - SARS-CoV-2 KW - United States KW - Workforce Y1 - 2021 U6 - https://doi.org/10.1186/s12939-021-01552-w VL - 20 SP - 1 EP - 22 PB - Springer Nature ER - TY - JOUR A1 - Cheah, Chien Chern A1 - Bock, Thomas A1 - Cao, Jianfu A1 - Linner, Thomas A1 - Liu, Yun-Hui A1 - Yamashita, Atsushi A1 - Yang, Liman T1 - Guest Editorial Introduction to the Focused Section on Mechatronics and Automation for Constructions JF - IEEE/ASME Transactions on Mechatronics N2 - Rapid advances in modern technologies have completely revolutionized many industries in recent years. It is anticipated that mechatronic and automation technologies would play an important role in transforming the construction industry to embrace for the fourth industrial revolution. However, construction automation problems bring up new research challenges that diverge from traditional methods. Unlike the factory environment, which is typically structured and predictable, construction sites are dynamic places where the working environment is unstructured and always changing. Due to lack of skilled labor, time and cost overruns, quality deficiencies, and the recent pandemics, mechatronic and automation technologies offer solutions for future safe, rapid, performative, prize worthy, and digitally protocolled construction projects. The coexistence of human workers, heavy vehicles, varying environmental conditions, and automated mechatronic systems also make safe human–machine interaction an important issue. Beyond expertise in a specific discipline, construction automation also requires multidisciplinary expertise to integrate with various fields, such as Internet of Things (IOT), robotics and its construction oriented subsystems, adaptive/robust control, machine vision, sensing technologies, artificial intelligence (AI), and building/construction/process information modeling (BIM/CIM/PIM) for automated construction process management and design. The main aims of this focused section in the IEEE/ASME Transactions on Mechatronics (TMECH) are to document the current state of the art in mechatronics and automation for constructions, and to present new results in several emerging research areas. KW - automation KW - Inspection KW - Mechatronics KW - Robot sensing systems KW - Service robots Y1 - 2021 U6 - https://doi.org/10.1109/TMECH.2021.3127237 VL - 26 IS - 6 SP - 2819 EP - 2825 PB - IEEE ER - TY - JOUR A1 - Iturralde, Kepa A1 - Feucht, Malte A1 - Illner, Daniel A1 - Hu, Rongbo A1 - Pan, Wen A1 - Linner, Thomas A1 - Bock, Thomas A1 - Eskudero, Ibon A1 - Rodriguez, Mariola A1 - Gorrotxategi, Jose A1 - Izard, Jean-Baptizste A1 - Astudillo, Julen A1 - Cavalcanti Santos, João. A1 - Gouttefarde, Marc A1 - Fabritius, Marc A1 - Martin, Christoph A1 - Henninge, Tomas A1 - Normes, Stein M. A1 - Jacobsen, Yngve A1 - Pracucci, Alessandro A1 - Cañada, Jesus A1 - Jimenez-Vicaria, Jose David A1 - Alonso, Rubén A1 - Elia, Lorenzo T1 - Cable-driven parallel robot for curtain wall module installation JF - Automation in Construction N2 - A cable-driven parallel robot (CDPR) was developed for the installation of curtain wall modules (CWM). The research addressed the question of whether the CDPR was capable installing CWMs with sufficient accuracy while being competitive compared to conventional manual methods. In order to develop and test such a system, a conceptual framework that consisted of three sub-systems was defined. The tests, carried out in two close-to-real demonstration buildings, revealed an absolute accuracy of the CWM installation of 4 to 23 mm. The working time for installing a CWM was reduced to 0.51 h. The results also show that the system is competitive for a workspace greater than 96 m2 compared to conventional manual methods. However, improvements such as reducing the hours for setting up the CDPR on the one hand and achieving a faster and more robust MEE on the other hand will be still necessary in the future. KW - Accuracy KW - Cable-robot KW - Facade KW - On-site Y1 - 2022 U6 - https://doi.org/10.1016/j.autcon.2022.104235 VL - 138 IS - June PB - Elsevier ER - TY - JOUR A1 - Selgrad, Kai A1 - Lier, Alexander A1 - Martinek, Magdalena A1 - Buchenau, Christoph A1 - Guthe, Michael A1 - Kranz, Franziska A1 - Schäfer, Henry A1 - Stamminger, Marc T1 - A Compressed Representation for Ray Tracing Parametric Surfaces JF - ACM Transactions on Graphics N2 - Parametric surfaces are an essential modeling tool in computer aided design and movie production. Even though their use is well established in industry, generating ray-traced images adds significant cost in time and memory consumption. Ray tracing such surfaces is usually accomplished by subdividing the surfaces on-the-fly, or by conversion to a polygonal representation. However, on-the-fly subdivision is computationally very expensive, whereas polygonal meshes require large amounts of memory. This is a particular problem for parametric surfaces with displacement, where very fine tessellation is required to faithfully represent the shape. Hence, memory restrictions are the major challenge in production rendering. In this paper, we present a novel solution to this problem. We propose a compression scheme for a-priori Bounding Volume Hierarchies (BVHs) on parametric patches, that reduces the data required for the hierarchy by a factor of up to 48. We further propose an approximate evaluation method that does not require leaf geometry, yielding an overall reduction of memory consumption by a factor of 60 over regular BVHs on indexed face sets and by a factor of 16 over established state-of-the-art compression schemes. Alternatively, our compression can simply be applied to a standard BVH while keeping the leaf geometry, resulting in a compression rate of up to 2:1 over current methods. Although decompression generates additional costs during traversal, we can manage very complex scenes even on the memory restrictive GPU at competitive render times. KW - Production Rendering KW - Subdivision Surfaces KW - Displacement Mapping KW - Ray Tracing Y1 - 2016 U6 - https://doi.org/10.1145/2953877 VL - 36 IS - 1 SP - 1 EP - 13 PB - ACM CY - New York, NY, USA ER - TY - CHAP A1 - Iturralde, Kepa A1 - Pan, Wen A1 - Linner, Thomas A1 - Bock, Thomas ED - Gasparri, Eugenia ED - Brambilla, Arianna ED - Lobaccaro, Gabriele ED - Goia, Francesco T1 - Automation and robotic technologies in the construction context: research experiences in prefabricated façade modules T2 - Rethinking building skins : Transformative technologies and research trajectories N2 - In recent years, there has been an increase in robots that perform activities in the built environment. In this chapter, projects were featured as case studies to demonstrate the potential of using automation and robotic technologies to facilitate building façade installation tasks. The Building Energy Renovation Through Timber-Prefabricated Modules (BERTIM) and the Highly automatEd PHysical Achievements and performancES using cable roboTs Unique Systems (HEPHAESTUS) research projects consist of researching, developing and prototyping different automated solutions for the handling of building envelopes in various processes of the installation sequence. The BERTIM research project focuses on building envelope upgrading, automated building façade manufacturing, while the HEPHAESTUS research project is focused on the cable-driven parallel robot for the installation of curtain wall modules. Both projects have proved the potential use of new technologies for the installation of prefabricated envelopes and reduced working time and costs during installation. KW - automation KW - end-effector KW - installation KW - prefabrication KW - robot KW - time-reduction Y1 - 2022 SN - 9780128224779 U6 - https://doi.org/10.1016/B978-0-12-822477-9.00009-7 SP - 475 EP - 493 PB - Elsevier CY - Cambridge, MA ER - TY - CHAP A1 - Franke, Linus A1 - Hofmann, Nikolai A1 - Stamminger, Marc A1 - Selgrad, Kai T1 - Multi-Layer Depth of Field Rendering with Tiled Splatting T2 - Proceedings of the ACM on Computer Graphics and Interactive Techniques N2 - In this paper we present a scattering-based method to compute high quality depth of field in real time. Relying on multiple layers of scene data, our method naturally supports settings with partial occlusion, an important effect that is often disregarded by real time approaches. Using well-founded layer-reduction techniques and efficient mapping to the GPU, our approach out-performs established approaches with a similar high-quality feature set. Our proposed algorithm works by collecting a multi-layer image, which is then directly reduced to only keep hidden fragments close to discontinuities. Fragments are then further reduced by merging and then splatted to screen-space tiles. The per-tile information is then sorted and accumulated in order, yielding an overall approach that supports partial occlusion as well as properly ordered blending of the out-of-focus fragments. KW - Computer graphics KW - rasterization KW - rendereing KW - visibility Y1 - 2018 U6 - https://doi.org/10.1145/3203200 VL - 1 IS - 1 SP - 1 EP - 17 PB - Association for Computing Machinery (ACM) CY - New York, NY, USA ER - TY - JOUR A1 - Selgrad, Kai A1 - Dachsbacher, C. A1 - Meyer, Q. A1 - Stamminger, M. T1 - Filtering Multi-Layer Shadow Maps for Accurate Soft Shadows JF - Computer Graphics Forum N2 - In this paper, we introduce a novel technique for pre-filtering multi-layer shadow maps. The occluders in the scene are stored as variable-length lists of fragments for each texel. We show how this representation can be filtered by progressively merging these lists. In contrast to previous pre-filtering techniques, our method better captures the distribution of depth values, resulting in a much higher shadow quality for overlapping occluders and occluders with different depths. The pre-filtered maps are generated and evaluated directly on the GPU, and provide efficient queries for shadow tests with arbitrary filter sizes. Accurate soft shadows are rendered in real-time even for complex scenes and difficult setups. Our results demonstrate that our pre-filtered maps are general and particularly scalable. Y1 - 2015 U6 - https://doi.org/10.1111/cgf.12506 VL - 34 IS - 1 SP - 205 EP - 215 PB - Wiley ER - TY - CHAP A1 - Selgrad, Kai A1 - Franke, Linus A1 - Stamminger, Marc ED - Gonzaga Magalhães, Luis ED - Mantiuk, Rafal T1 - Tiled Depth of Field Splatting T2 - EUROGRAPHICS 2016 (EG 2016) : Lisbon, Portugal, May 9th-13th, 2016 ; Posters N2 - We present a method to compute post-processing depth of field (DOF) that produces more accurate results than previous approaches. Our method is based on existing approaches, namely DOF rendering by splatting and fast, tile-based particle accumulation. Using tile-based accumulation allows us to correctly sort out of focus pixels and apply proper alpha-blending to avoid artifacts commonly encountered with filter-based depth of field methods. KW - Computer graphics KW - Display algorithms KW - Image Generation Y1 - 2016 U6 - https://doi.org/10.2312/egp.20161056 SP - 39 EP - 40 PB - The Eurographics Association ER - TY - CHAP A1 - Iturralde, Kepa A1 - Feucht, Malte A1 - Hu, Rongbo A1 - Pan, Wen A1 - Schlandt, Marcel A1 - Linner, Thomas A1 - Bock, Thomas A1 - Izard, Jean-Baptizste A1 - Eskudero, Ibon A1 - Rodriguez, Mariola A1 - Gorrotxategi, Jose A1 - Astudillo, Julen A1 - Cavalcanti Santos, João. A1 - Gouttefarde, Marc A1 - Fabritius, Marc A1 - Martin, Christoph A1 - Henninge, Tomas A1 - Stein, M. Nornes A1 - Normes, Stein M. A1 - Jacobsen, Yngve A1 - Pracucci, Alessandro A1 - Cañada, Jesus A1 - Jimenez-Vicaria, Jose David A1 - Paulotto, Carlo A1 - Alonso, Rubén A1 - Elia, Lorenzo ED - Tateyama, Kazuyoshi ED - Ishii, Kazuo ED - Inoue, Fumihiro T1 - A Cable Driven Parallel Robot with a Modular End Effector for the Installation of Curtain Wall Modules (Best Paper Award) T2 - Proceedings of the 37th International Symposium on Automation and Robotics in Construction (ISARC 2020): From Demonstration to Practical Use, To New Stage of Construction Robot, October 27-28, 2020, Kitakyushu, Japan N2 - The installation of curtain wall modules (CWMs) is a risky activity carried out in the heights and often under unfavorable weather conditions. CWMs are heavy prefabricated walls that are lifted normally with bindings and cranes. High stability is needed while positioning in order not to damage the fragile CWMs. Moreover, this activity requires high precision while positioning brackets, the modules, and for that reason, intensive survey and marking are necessary. In order to avoid such inconveniences, there were experiences to install façade modules in automatic mode using robotic devices. In the research project HEPHAESTUS, a novel system has been developed in order to install CWMs automatically. The system consists of two subsystems: a cable driven parallel robot (CDPR) and a set of robotic tools named as Modular End Effector (MEE). The platform of the CDPR hosts the MEE. This MEE performs the necessary tasks of installing the curtain wall modules. There are two main tasks that the CDPR and MEE need to achieve: first is the fixation of the brackets onto the concrete slab, and second is the picking and placing of the CWMs onto the brackets. The first integration of the aforementioned system was carried out in a controlled environment that resembled a building structure. The results of this first test show that there are minor deviations when positioning the CDPR platform. In future steps, the deviations will be compensated by the tools of the MEE and the installation of the CWM will be carried out with the required accuracy automatically. KW - automation KW - Façade KW - On-site KW - Robotics Y1 - 2020 SN - 978-952-94-3634-7 U6 - https://doi.org/10.22260/ISARC2020/0204 SP - 1472 EP - 1479 PB - The International Association for Automation and Robotics in Construction (I.A.A.R.C.) ER - TY - CHAP A1 - Hu, Rongbo A1 - Kabouteh, Amir A1 - Pawlitza, Katja A1 - Güttler, Jörg A1 - Linner, Thomas A1 - Bock, Thomas ED - Al-Hussein, Mohamed T1 - Developing Personalized Intelligent Interior Units to Promote Activity and Customized Healthcare for Aging Society T2 - Proceedings of the 36th International Symposium on Automation and Robotics in Construction (ISARC 2019), 21.05.2019-24.05.2019, Banff, Canada N2 - The world’s population is aging at an unprecedented pace. Aging society is not only a severe crisis in the developed world such as Germany and Japan, but also a rigorous challenge in emerging economies such as China. Many age-related diseases are fostered by the lack of physical, cognitive, and social activities. Increasing the activity level has many benefits for the elderly and can improve their independence. The research project REACH (funded by European Union’s Horizon 2020 Research and Innovation Program under grant agreement No. 690425) aims to develop a service system that will turn clinical and care environments into personalized modular sensing, prevention, and intervention systems that encourage the elderly to become healthy through activities (e.g., physical, cognitive, socializing, personalized food, etc.). As a core research partner, the Chair of Building Realization and Robotics at Technical University of Munich developed a series of Personalized Intelligent Interior Units (PI²Us), which are a special type of smart furniture, that materialize the REACH concepts and functionality seamlessly into the different REACH use case settings. Specifically, the design and functions of the PI²Us, which consist of the PI²U-SilverArc, PI²U-MiniArc, PI²U-Bed, and PI²U-iStander, will be described in detail. In addition, a modular apartment integrating all PI²Us and key technologies in REACH is designed and simulated to create a total interior living and care environment for elderly users. Due to its modularity, parts of the apartment can be easily adapted and rapidly deployed in different REACH use case settings in four European countries, which will then help the REACH consortium execute a series of testing activities. In conclusion, this research project provides a systematic and innovative example for the world to mitigate the impact of aging society. Y1 - 2019 SN - 978-952-69524-0-6 U6 - https://doi.org/10.22260/ISARC2019/0032 SP - 234 EP - 241 PB - The International Association for Automation and Robotics in Construction ER - TY - CHAP A1 - Hu, Rongbo A1 - Linner, Thomas A1 - Schmailzl, Marc A1 - Güttler, Jörg A1 - Lu, Yuan A1 - Bock, Thomas ED - Tateyama, Kazuyoshi ED - Ishii, Kazuo ED - Inoue, Fumihiro T1 - Exploring Gerontechnology for Aging-Related Diseases in Design Education: An Interdisciplinary Perspective T2 - Proceedings of the 37th International Symposium on Automation and Robotics in Construction (ISARC 2020): From Demonstration to Practical Use, To New Stage of Construction Robot, October 27-28, 2020, Kitakyushu, Japan N2 - Aging society is not only a crisis in the developed world but also a severe challenge in some emerging economies. However, the awareness of population aging and gerontechnology is far from sufficiently addressed in the architectural design education in universities. Therefore, an interdisciplinary approach in design education is urgently needed to raise the awareness of the aging crisis among the future architects, interior designers, and beyond. This article introduces a novel model of a design seminar offered by a German University, addressing population aging issues in the architecture department. The syllabus, formality, and the expected results of the seminar are revealed in detail. The participants are encouraged to apply interdisciplinary knowledge such as barrier-free architecture, mechanical engineering, electrical engineering, robotics, medicine, psychology, and business to achieve the goals of the seminar. Based on the originality and degree of completion, several students' works are selected and reported, targeting a variety of diseases or syndromes related to aging, such as dementia, immobility, and tremors. Overall, participants of this seminar are motivated and have positive feedback on this seminar, oftentimes claiming that they have seldom studied similar topics in previous architecture education. This enables students from architecture as well as other fields to be better prepared to tackle the upcoming challenges such as labor shortages and infectious diseases in a rapidly aging world. Furthermore, the seminar creates novel concepts that serve as a win-win "honeypot" for both students and their instructors, potentially sparking research topics and start-ups with concepts fostered in this seminar. KW - aging-related diseases KW - Bauhaus 2.0 KW - COVID-19 KW - Dementia KW - Design education KW - Gerontechnology KW - Interdisciplinary Y1 - 2020 SN - 978-952-94-3634-7 U6 - https://doi.org/10.22260/ISARC2020/0102 SP - 735 EP - 742 PB - The International Association for Automation and Robotics in Construction (I.A.A.R.C.) ER - TY - CHAP A1 - Pan, Wen A1 - Hu, Rongbo A1 - Linner, Thomas A1 - Bock, Thomas T1 - Developing a roadmap for implementing on-site construction automation and robotics in Hong Kong T2 - CIB World Building Congress 2019 "Constructing Smart Cities" ; 17.06.2019-21.06.2019, Hong Kong, China N2 - For a long time, the conventional construction sector in Hong Kong has been perceived as old-fashioned and lagging behind compared to many other industrial sectors. Numerous challenges are facing the construction industry, such as diminishing productivity, unstable quality, increasing demand, as well as population aging and shortage in the local labor market. One possible solution is to identify and deploy the state-of-the-art technologies that could potentially be implemented in the Hong Kong construction industry. Many studies have been documented about the design and development of a specific construction robotic system. However, there is limited literature on how to investigate the implementation and integration of a range of proposed systems in a specific, local context, and to evaluate the process and impact from short-term, mid-term, and long-term perspectives. Based on the ongoing consultancy project commissioned by the Construction Industry Council (CIC) in Hong Kong, this paper demonstrates the method adopted in proposing a systematic approach as well as the development of a comprehensive roadmap for implementing on-site construction automation and robotic technologies in the context of Hong Kong. In general, the proposed roadmap, which is structured based on the reviews of the current situation in Hong Kong's construction industry, will evaluate short-term and mid-term practical strategies and action plans. Furthermore, it will forecast a long-term perspective, aspirations, and potential business strategy. The activity of road-mapping is extended with the objective to mitigate existing risks and barriers, and to plan ahead. Eventually, it will serve as a guideline for the construction industry in Hong Kong and beyond to execute similar types of projects in the future. KW - Consultancy KW - Hong Kong KW - On-site KW - roadmap KW - Construction automation and robotics Y1 - 2019 UR - https://www.researchgate.net/publication/335149370_Developing_a_roadmap_for_implementing_on-site_construction_automation_and_robotics_in_Hong_Kong ER - TY - CHAP A1 - Pan, Wen A1 - Iturralde, Kepa A1 - Hu, Rongbo A1 - Linner, Thomas A1 - Bock, Thomas ED - Tateyama, Kazuyoshi ED - Ishii, Kazuo ED - Inoue, Fumihiro T1 - Adopting Off-site Manufacturing, and Automation and Robotics Technologies in Energy-efficient Building T2 - Proceedings of the 37th International Symposium on Automation and Robotics in Construction (ISARC 2020): From Demonstration to Practical Use, To New Stage of Construction Robot, Kitakyushu, Japan, October 27-28, 2020 N2 - Delivering energy-efficient buildings or settlements has become a popular topic amongst architects, engineers, and building engineering physicists. There are many methods for improving building energy performances, both for new build projects and for retrofitting existing buildings. However, the construction industry faces some profound challenges to satisfy the increasing demand for energy-efficient buildings or other solutions and to be able to offer them at an affordable cost. A holistic approach has been adopted to validate whether automation robotics and off-site manufacturing technologies can yield positive changes in the delivery of energy-efficient buildings. This paper emphasizes the potential transformations and possible impacts on the design, construction, and installation process of an energy-efficient building once the advanced technologies are implemented. This paper also highlights case studies in multiple ongoing or past European Union (EU) Horizon 2020 research projects as well as private projects to demonstrate the applicability and technical feasibility of the proposed solution. The scenario proposed was used to demonstrate how to apply the proposal in a large-scale residential building project. In addition, the findings from this study will serve as proof of the concept of a larger research project, or as an inspiration for the construction industry to execute energy-efficient building projects in the future. KW - Construction robotic KW - Energy-efficient building KW - prefabrication Y1 - 2020 SN - 978-952-94-3634-7 U6 - https://doi.org/10.22260/ISARC2020/0215 SP - 1549 EP - 1555 PB - The International Association for Automation and Robotics in Construction (I.A.A.R.C.) ER - TY - JOUR A1 - Pan, Mi A1 - Linner, Thomas A1 - Pan, Wei A1 - Cheng, Huimin A1 - Bock, Thomas T1 - Structuring the context for construction robot development through integrated scenario approach JF - Automation in Construction N2 - The technological development of construction robots is underway globally. However, current development activities face significant uncertainties, particularly in terms of the definition and management of system requirements, which are primarily based on vague assumptions about the future. Thus, a new tool is required to grasp how construction robots—and their surrounding ecosystems—will be used. This research adopts an unprecedented scenario-based approach to develop and analyze future alternatives for construction robotics in a systematic manner. Hong Kong “toward 2035” is used as an initial test case, and four scenarios of the robot ecosystem, i.e., “Bottleneck,” “Age of Iron Worker,” “Dynamic Co-evolution of Robotization and Modularization,” and “Rise of the Robots,” are developed from evidence-based analysis. Scenarios highlight the crucial role of workers for construction robot utilization. Driving forces, opportunities, and challenges are identified for elaborating strategies under each scenario. The integrated scenario approach and findings lay an important foundation for systems engineering processes in construction robotics to develop a new tool for structuring system context and specifying system requirements. KW - Construction robotics KW - Construction technology KW - Scenario techniques KW - Systems engineering KW - Technology forecasting Y1 - 2020 U6 - https://doi.org/10.1016/j.autcon.2020.103174 VL - 114 IS - June PB - Elsevier ER - TY - CHAP A1 - Ilhan, Bahriye A1 - Bock, Thomas A1 - Linner, Thomas A1 - Iturralde, Kepa A1 - Pan, Wen A1 - Hu, Rongbo ED - Goulding, J. S. ED - Rahimian, F. P. T1 - Innovative Robotics and Automation for Offsite Manufacturing T2 - Offsite Production and Manufacturing for Innovative Construction : People, Process and Technology N2 - This chapter presents additional research and development on offsite modular manufacturing of interior subsystems – to transform real estate stock to future demands triggered by demographic challenges, thereby allowing instant deployment. It explores the use of innovative systems for prefabrication. Regarding offsite production and manufacturing, the transformation of parts and low-level components into higher-level components by highly mechanised, automated or robot-supported industrial settings therefore needs to take place. Construction automation for offsite manufacturing, requires the integration of products, organisation, informational aspects, and machine technology in order to maximise efficiency and deliver product quality. A construction-kit cell can confine the production-unit elements in a specific area of the building, yet contain a greater capacity than an upgraded existing environment. A fully robotic construction industry will require significant research and development – of each product, process, and participant of the building production process. Y1 - 2019 SN - 9781138550711 U6 - https://doi.org/10.1201/9781315147321-13 PB - Routledge CY - London ER - TY - CHAP A1 - Bulgakov, Alexey A1 - Bock, Thomas A1 - Otto, Jens A1 - Buzalo, Natalia A1 - Linner, Thomas ED - Tateyama, Kazuyoshi ED - Ishii, Kazuo ED - Inoue, Fumihiro T1 - Requirements for Safe Operation and Facility Maintenance of Construction Robots T2 - Proceedings of the 37th International Symposium on Automation and Robotics in Construction (ISARC 2020): From Demonstration to Practical Use, To New Stage of Construction Robot, October 27-28, 2020, Kitakyushu, Japan N2 - Construction robots are devices of increased danger and, under certain conditions, can become a source of injuries to maintenance personnel, as well as lead to the failure of technological equipment. Most of the accidents are associated with the presence of maintenance personnel in the working area during programming, configuration, training, repair and maintenance of robots. The article describes measures to ensure safety during the maintenance of robots and manipulators. The stages of preparing the construction industry for the use of manipulators, robots and robotic complexes are presented. A system of measures for preparing equipment for use and its maintenance during operation is proposed. KW - Construction Manipulators and Robots KW - Maintenance of Robotic Systems KW - Operation KW - Safety KW - Service Y1 - 2020 SN - 978-952-94-3634-7 U6 - https://doi.org/10.22260/ISARC2020/0053 SP - 369 EP - 376 PB - The International Association for Automation and Robotics in Construction (I.A.A.R.C.) ER - TY - RPRT A1 - Andersen, Henning Boje, A1 - Bardram, Jakob E. A1 - Maxhuni, Alban A1 - Larsen, Rasmus Tolstrup A1 - Schäpers Barbara, A1 - Krewer, Carmen A1 - Steinböck, Martina A1 - Sprengel, D. A1 - Linner, Thomas A1 - Schlandt, Marcel A1 - Kabouteh, Amir A1 - Güttler, Jörg A1 - Hu, Rongbo A1 - Lu, Yuan A1 - Bock, Thomas T1 - Detailed set of privacy guidelines and schemata: Summarization of the outcome of the development of necessary data privacy and security schemata to (1) protect sensed data; (2) ascertain computational anonymity; (3) ensure privileged intervention access BT - Deliverable submitted as part of the EU H2020 research project REACH (Responsive Engagement of the Elderly promoting Activity and Customized Healthcare), Grant Agreement No. 690425 N2 - Deliverable D32: Detailed set of privacy guidelines and schemata Responsive Engagement of the Elderly promoting Activity and Customized Healthcare 2 Deliverable D32: Detailed set of privacy guidelines and schemata: Summarization of the outcome of the development of necessary data privacy and security schemata to (1) protect sensed data; (2) ascertain computational anonymity; (3) ensure privileged intervention access (associated with task T.7.5). Abstract: This deliverable report examines the outcomes of the REACH research project with regard to data privacy and data security, associated with Task T7.5. This document gives an overview of our analyses involving ethics and privacy concerns in terms of the individual touchpoints and shows how these findings guided the project towards the determination of the medical purpose and intended use-cornerstones to on the path to market entry. In addition, we provide a brief overview of how the guidelines regarding data protection and encryption influenced the technical design and implementation of project components. Furthermore, we provide an update on the management of legal implications (and the implications resulting from this for system requirements and business strategy) of the use of machine learning and artificial intelligence in the context of REACH solutions, incorporating an external expert opinion. Finally, this deliverable report contains a summary of our approach towards risk gov-ernance and standardization in this regard: our work in REACH on privacy and security schemata, culminated in a CEN Workshop Agreement (guideline) that generalizes REACH outcomes and makes them accessible and usable beyond the REACH consortium . Y1 - 2020 UR - https://www.researchgate.net/publication/341355713_Detailed_set_of_privacy_guidelines_and_schemata_Summarization_of_the_outcome_of_the_development_of_necessary_data_privacy_and_security_schemata_to_1_protect_sensed_data_2_ascertain_computational_anony N1 - REACH2020: Responsive Engagement of the Elderly promoting Activity and Customized Healthcare (Horizon 2020, PHC track) ER - TY - RPRT A1 - Ehrari, Humira A1 - Andersen, Henning Boje, A1 - Valk, Carlijn A1 - Lu, Yuan A1 - Visser, Thomas A1 - Larsen, Rasmus Tolstrup A1 - Korfitsen, Christoffer Bruun A1 - Langberg, Henning A1 - Randriambelonoro, Mirana E. A1 - Schäpers, Barbara A1 - Linner, Thomas T1 - User acceptance and motivational strategies BT - Deliverable submitted as part of the EU H2020 research project REACH (Responsive Engagement of the Elderly promoting Activity and Customized Healthcare), Grant Agreement No. 690425 (Report number: REACH2020 Deliverable D30) N2 - This deliverable describes the results and reflections by the partners’ efforts on user acceptance and motivation strategies. The report presents the outcome of an identification and detailing of user acceptance and motivation strategies for the overall system (REACH, Touchpoints & Engine concept) and subsystems (Touchpoints, REACH toolkit elements), providing full consideration and detailing of ethical, privacy, legal and usability/accessibility aspects. The REACH system incorporates two strands of technological elements; on the one hand, sensing and monitoring elements, and, on the other hand, motivational and physical engagement elements. For both types, user acceptance is critical allowing for a user experience that leads to (intrinsic, extrinsic, etc.) motivation to more physical activity. The remainder of this Deliverable is structured as follows. First, we introduce the REACH-specific interplay of the concept “user acceptance” with the linked concepts “behaviour change/motivation” and “personalization” in the context of (early) physical activation of elderly persons, and outline the related work and activities conducted in REACH (overall and per TP). Second, we present an analysis and structuring of acceptability drivers (ethical, privacy/security, legal, and accessibility considerations) per Touchpoint. From this we developed an integrated view that represents REACH specific know-how about how to use these acceptability drivers to integrate advanced ICT-driven technology for early detection and intervention use cases seamlessly into age inclusive communities. Third, we present our findings in the context of the development of acceptability drivers for the use of sensing and monitoring elements. We conclude the deliverable by outlining acceptability related evidence and examples from REACH trials (based on Deliverable D27 findings), and by summarizing the overall findings of this deliverable. Y1 - 2019 U6 - https://doi.org/10.13140/RG.2.2.20619.64800 N1 - REACH2020: Responsive Engagement of the Elderly promoting Activity and Customized Healthcare (Horizon 2020, PHC track) ER - TY - RPRT A1 - Andersen, Henning Boje A1 - Schäpers, Barbara A1 - Krewer, Carmen A1 - Ehrari, Humira A1 - Schlandt, Marcel A1 - Linner, Thomas T1 - Formalised results of pretesting I and II activities BT - Deliverable submitted as part of the EU H2020 research project REACH (Responsive Engagement of the Elderly promoting Activity and Customized Healthcare), Grant Agreement No. 690425 (Report number: REACH2020 Deliverable 27) N2 - In this deliverable, we present, structure and interpret the formalised results of all testing activities that have been carried out thus far in REACH. We first (Chapter 2) introduce the detailed testing strategy of REACH, which details and brings forward previously described conceptual provisions (see Deliverables D4, D9 and D29) and responds to previous reviewer comments (R5 and R6, second review, November 2017; aiming at the improved emphasis of geriatric and medical aspects and their normalisation across Touchpoints and project activities). In response to the reviewers’ comments, REACH re-aligned some of its resources and formed a medical/geriatric task force (SK, HUG, DTU, TUM), which analyses and streamlines testing activities across Touchpoints, clarifies the common goals and measures, and works towards a normalisation of study designs and tools used across the project. We outline in this context the overall hypothesis for the REACH system along with four well-defined sub-hypotheses for each Touchpoint. Based on this, in Chapter 3, we present our methodological approach with regard to testing in REACH and provide an overview and a classification system for all testing activities carried out. Accordingly, in Chapter 4, we present the results (documentation of the carried-out testing activities), and in Chapter 5, we interpret the testing results. Chapter 6 summarises the state of play regarding testing in REACH and outlines the next steps and upcoming activities. The Appendix contains the full trial reports sorted according to a variety of items. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 690425. Y1 - 2019 UR - https://www.researchgate.net/publication/333324667_Formalised_results_of_pretesting_I_and_II_activities N1 - REACH2020: Responsive Engagement of the Elderly promoting Activity and Customized Healthcare (Horizon 2020, PHC track) ER - TY - JOUR A1 - Linner, Thomas A1 - Pan, Wen A1 - Hu, Rongbo A1 - Zhao, Charlie A1 - Iturralde, Kepa A1 - Taghavi, Meysam A1 - Trummer, Julian A1 - Schlandt, Marcel A1 - Bock, Thomas T1 - A technology management system for the development of single-task construction robots JF - Construction Innovation N2 - Purpose: Because of the sharply growing interest worldwide of “hard” physical-mechanical robot systems for the execution of on-site construction tasks [i.e. single-task construction robots (STCRs)], the purpose of this study is to equip development projects with a systematic design-management system model that allows to integrate the different needs and aims of stakeholders. Design/methodology/approach: This paper proposes a STCR-technology management system (STCR-TMS) for the complete development cycle of STCR designs. The STCR-TMS is based on established principles from systems engineering and management and STCR-specific activities developed and tested by the authors as standalone elements in previous research work. Findings: The application of the STCR-TMS revealed the practicability of the method and the underlying concepts to provide practical guidance for the development process. Additional findings indicate that the method is sufficiently generic and flexible for application to different types of robots and indifferent world regions. This research has also shown that key activities need to be addressed to increase the practicability of the STCR-TMS. Originality/value:  A unique characteristic of this method is the evolution with each utilization cycle. In addition, individual elements are interchangeable and can be adapted based on external circumstances. These properties allow the TMS to be applied to other fields in construction robotics. With the progression of the verification and validation of the method, know-how and certain elements can be fed into standardization activities (e.g. establishing a management system standard). KW - Construction robotics KW - Construction technology KW - Robotics KW - Systems analysis and design KW - Systems engineering KW - Technology management Y1 - 2019 U6 - https://doi.org/10.1108/CI-06-2019-0053 VL - 20 IS - 1 SP - 96 EP - 111 PB - Emerald ER - TY - RPRT A1 - Kabouteh, Amir A1 - Güttler, Jörg A1 - Linner, Thomas A1 - Valk, Carlijn A1 - Lu, Yuan A1 - Kozak, Dominika T1 - Final mock-up version of REACH system BT - Deliverable submitted as part of the EU H2020 research project REACH (Responsive Engagement of the Elderly promoting Activity and Customized Healthcare), Grant Agreement No. 690425 (Report number: REACH2020 Deliverable D26) N2 - In REACH, WP6 focusses on systems engineering and testing aspects such as system integration, verification, validation, and optimization. The presented Deliverable (associated with Task T6.2) provides a presentation/demonstration of the executed trials including different partner groups in different use case settings. It is worth mentioning that since this deliverable report has a nature of “Demonstrator”, this document tries to show the implemented trials. Therefore, it was tried to integrate as many pictures as possible to prove the trials. This deliverable report targets mainly the Touchpoints TP1, TP2 and TP3. This is decided due to the person months of the partners involved in this task. In these trials the partners addressed a pre-integration of sub modules involved in the future REACH presentation. Additionally, this deliverable discusses the trials from the first step which is the planning and execution, then to the execution/implementation and then to analysis and studying the results. Furthermore, using these trials the deficiencies and shortcomings were identified in these lab experimentations. Early detection of shortcomings and deficiencies will lead to simplified implementation and adjustment before reaching the final testing and integration stages. At the current time, the partners are already planning and preparing for the future tests/trials at the use case settings sites. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 690425. Y1 - 2019 UR - https://www.researchgate.net/publication/333324818_Final_mock-up_version_of_REACH_system N1 - REACH2020: Responsive Engagement of the Elderly promoting Activity and Customized Healthcare (Horizon 2020, PHC track) ER - TY - JOUR A1 - Hu, Rongbo A1 - Iturralde, Kepa A1 - Linner, Thomas A1 - Zhao, Charlie A1 - Pan, Wen A1 - Pracucci, Alessandro A1 - Bock, Thomas T1 - A Simple Framework for the Cost–Benefit Analysis of Single-Task Construction Robots Based on a Case Study of a Cable-Driven Facade Installation Robot JF - Buildings, Architecture: Integration of Art and Engineering N2 - Single-task construction robots (STCRs) have become a popular research topic for decades. However, there is still a gap in the ubiquitous application of STCRs for onsite construction due to various reasons, such as cost concerns. Therefore, cost–benefit analysis (CBA) can be used to measure the net economic benefit of the STCRs, compared to traditional construction methods, in order to boost the implementation of STCRs. This paper presents a simple and practical framework for the economic evaluation of STCRs and conducts a case study of a cable-driven facade installation robot to verify the method. The results show that the cable-driven robot for facade installation is worth investing in in the UK, as well as in the majority of G20 countries. Furthermore, other socioenvironmental implications of STCRs and the limitations of the study are also discussed. In conclusion, the proposed method is highly adaptable and reproducible. Therefore, researchers, engineers, investors, and policy makers can easily follow and customize this method to assess the economic advantages of any STCR systems, compared to traditional construction technologies. KW - cable-driven parallel robot KW - construction robot KW - cost–benefit analysis KW - curtain wall modules KW - economic evaluation KW - facade installation Y1 - 2021 U6 - https://doi.org/10.3390/buildings11010008 VL - 11 IS - 1 SP - 1 EP - 8 PB - MDPI CY - Basel ER - TY - JOUR A1 - Mauerer, Wolfgang A1 - Sawallisch, J. A1 - Hillier, G. A1 - Oberthür, S. A1 - Hönick, S. T1 - Real-Time Android: Achieving determinism and ease of use JF - Embedded Wold Conference; Nuremberg, Germany, February 25, 2014 - February 27, 2014 Y1 - 2014 UR - http://www.linuxtag.org/2012/fileadmin/www.linuxtag.org/slides/Gernot%20Hillier%20+%20Wolfgang%20Mauerer%20+%20Jan%20Sawallisch%20-%20Android_%20real-time%20for%20the%20rest%20of%20us.p416.pdf SP - 1 EP - 7 ER - TY - JOUR A1 - Christ, Andreas A1 - Brecht, Benjamin A1 - Mauerer, Wolfgang A1 - Silberhorn, Christine T1 - Theory of quantum frequency conversion and type-II parametric down-conversion in the high-gain regime JF - New Journal of Physics N2 - Frequency conversion (FC) and type-II parametric down-conversion (PDC) processes serve as basic building blocks for the implementation of quantum optical experiments: type-II PDC enables the efficient creation of quantum states such as photon-number states and Einstein–Podolsky–Rosen (EPR)-states. FC gives rise to technologies enabling efficient atom–photon coupling, ultrafast pulse gates and enhanced detection schemes. However, despite their widespread deployment, their theoretical treatment remains challenging. Especially the multi-photon components in the high-gain regime as well as the explicit time-dependence of the involved Hamiltonians hamper an efficient theoretical description of these nonlinear optical processes. In this paper, we investigate these effects and put forward two models that enable a full description of FC and type-II PDC in the high-gain regime. We present a rigorous numerical model relying on the solution of coupled integro-differential equations that covers the complete dynamics of the process. As an alternative, we develop a simplified model that, at the expense of neglecting time-ordering effects, enables an analytical solution. While the simplified model approximates the correct solution with high fidelity in a broad parameter range, sufficient for many experimental situations, such as FC with low efficiency, entangled photon-pair generation and the heralding of single photons from type-II PDC, our investigations reveal that the rigorous model predicts a decreased performance for FC processes in quantum pulse gate applications and an enhanced EPR-state generation rate during type-II PDC, when EPR squeezing values above 12 dB are considered. Y1 - 2013 U6 - https://doi.org/10.1088/1367-2630/15/5/053038 VL - 15 IS - 5 PB - IOP ER - TY - JOUR A1 - Gabriel, Christian A1 - Wittmann, Christoffer A1 - Sych, Denis A1 - Dong, Ruifang A1 - Mauerer, Wolfgang A1 - Andersen, Ulrik L. A1 - Marquardt, Christoph A1 - Leuchs, Gerd T1 - A generator for unique quantum random numbers based on vacuum states JF - Nature Photonics N2 - Random numbers are a valuable component in diverse applications that range from simulations over gambling to cryptography. The quest for true randomness in these applications has engendered a large variety of different proposals for producing random numbers based on the foundational unpredictability of quantum mechanics4,5,6,7,8,9,10,11. However, most approaches do not consider that a potential adversary could have knowledge about the generated numbers, so the numbers are not verifiably random and unique12,13,14,15. Here we present a simple experimental setup based on homodyne measurements that uses the purity of a continuous-variable quantum vacuum state to generate unique random numbers. We use the intrinsic randomness in measuring the quadratures of a mode in the lowest energy vacuum state, which cannot be correlated to any other state. The simplicity of our source, combined with its verifiably unique randomness, are important attributes for achieving high-reliability, high-speed and low-cost quantum random number generators. Y1 - 2010 U6 - https://doi.org/10.1038/nphoton.2010.197 VL - 4 IS - 10 SP - 711 EP - 715 PB - Springer ER - TY - JOUR A1 - Helwig, Wolfram A1 - Mauerer, Wolfgang A1 - Silberhorn, Christine T1 - Multimode states in decoy-based quantum-key-distribution protocols JF - Physical Review A N2 - Every security analysis of quantum-key distribution (QKD) relies on a faithful modeling of the employed quantum states. Many photon sources, such as for instance a parametric down-conversion (PDC) source, require a multimode description but are usually only considered in a single-mode representation. In general, the important claim in decoy-based QKD protocols for indistinguishability between signal and decoy states does not hold for all sources. We derive bounds on the single-photon transmission probability and error rate for multimode states and apply these bounds to the output state of a PDC source. We observe two opposing effects on the secure key rate. First, the multimode structure of the state gives rise to a new attack that decreases the key rate. Second, more contributing modes change the photon number distribution from a thermal toward a Poissonian distribution, which increases the key rate. Y1 - 2009 U6 - https://doi.org/10.1103/physreva.80.052326 VL - 80 IS - 5 PB - American Physical Society ER - TY - JOUR A1 - Coldenstrodt-Ronge, Hendrik B. A1 - Lundeen, Jeff S. A1 - Pregnell, Kenny L. A1 - Feito, Alvaro A1 - Smith, Brian J. A1 - Mauerer, Wolfgang A1 - Silberhorn, Christine A1 - Eisert, Jens A1 - Plenio, Martin B. A1 - Walmsley, Ian A. T1 - A proposed testbed for detector tomography JF - Journal of Modern Optics N2 - Measurement is the only part of a general quantum system that has yet to be characterised experimentally in a complete manner. Detector tomography provides a procedure for doing just this; an arbitrary measurement device can be fully characterised, and thus calibrated, in a systematic way without access to its components or its design. The result is a reconstructed POVM containing the measurement operators associated with each measurement outcome. We consider two detectors, a single-photon detector and a photon-number counter, and propose an easily realised experimental apparatus to perform detector tomography on them. We also present a method of visualising the resulting measurement operators. Y1 - 2009 U6 - https://doi.org/10.1080/09500340802304929 VL - 56 IS - 2-3 SP - 432 EP - 441 PB - Taylor&Francis ER - TY - JOUR A1 - Mauerer, Wolfgang A1 - Helwig, Wolfram A1 - Silberhorn, Christine T1 - Recent developments in quantum key distribution: Theory and practice JF - Annalen der Physik N2 - Quantum key distribution is among the foremost applications of quantum mechanics, both in terms of fundamental physics and as a technology on the brink of commercial deployment. Starting from principal schemes and initial proofs of unconditional security for perfect systems, much effort has gone into providing secure schemes which can cope with numerous experimental imperfections unavoidable in real world implementations. In this paper, we provide a comparison of various schemes and protocols. We analyse their efficiency and performance when implemented with imperfect physical components. We consider how experimental faults are accounted for using effective parameters. We compare various recent protocols and provide guidelines as to which components propose best advances when being improved. KW - experimental imperfections KW - quantum communication KW - Quantum cryptography Y1 - 2008 U6 - https://doi.org/10.1002/andp.200710284 VL - 17 IS - 2-3 SP - 158 EP - 175 PB - Wiley ER - TY - JOUR A1 - Mauerer, Wolfgang A1 - Avenhaus, Malte A1 - Helwig, Wolfram A1 - Silberhorn, Christine T1 - How colors influence numbers: Photon statistics of parametric down-conversion JF - Physical Review A (Phys. Rev. A) N2 - Parametric down-conversion (PDC) is a technique of ubiquitous experimental significance in the production of nonclassical, photon-number-correlated twin beams. Standard theory of PDC as a two-mode squeezing process predicts and homodyne measurements observe a thermal photon number distribution per beam. Recent experiments have obtained conflicting distributions. In this article, we explain the observation by an a priori theoretical model solely based on directly accessible physical quantities. We compare our predictions with experimental data and find excellent agreement. Y1 - 2009 U6 - https://doi.org/10.1103/physreva.80.053815 VL - 80 IS - 5 PB - American Physical Society ER - TY - JOUR A1 - Mauerer, Wolfgang T1 - Datenvisualisierung mit Ggplot2 JF - Linux-Magazin N2 - Wer seine Daten mit ansehnlichen und informativen Graphen veranschaulichen möchte, braucht meist viel Geduld. Die R-Erweiterung Ggplot2 bringt System in die Grafik, drückt sich in knappem Quellcode aus und bläst frischen Wind in den Alltag der Datenvisualisierung. Y1 - 2012 UR - www.linux-magazin.de/Heft-Abo/Ausgaben/2012/03/Ggplot2 IS - 3 PB - Linux New Media AG ER - TY - JOUR A1 - Rohde, Peter P. A1 - Mauerer, Wolfgang A1 - Silberhorn, Christine T1 - Spectral structure and decompositions of optical states, and their applications JF - New Journal of Physics N2 - We discuss the spectral structure and decomposition of multi-photon states. Ordinarily 'multi-photon states' and 'Fock states' are regarded as synonymous. However, when the spectral degrees of freedom are included this is not the case, and the class of 'multi-photon' states is much broader than the class of 'Fock' states. We discuss the criteria for a state to be considered a Fock state. We then address the decomposition of general multi-photon states into bases of orthogonal eigenmodes, building on existing multi-mode theory, and introduce an occupation number representation that provides an elegant description of such states. This representation allows us to work in bases imposed by experimental constraints, simplifying calculations in many situations. Finally we apply this technique to several example situations, which are highly relevant for state of the art experiments. These include Hong–Ou–Mandel interference, spectral filtering, finite bandwidth photo-detection, homodyne detection and the conditional preparation of Schrödinger kitten and Fock states. Our techniques allow for very simple descriptions of each of these examples. Y1 - 2007 U6 - https://doi.org/10.1088/1367-2630/9/4/091 VL - 9 IS - 4 PB - IOP Publishing ER - TY - JOUR A1 - Jain, Brijnesh T1 - Making the dynamic time warping distance warping-invariant JF - Pattern Recognition N2 - The literature postulates that the dynamic time warping (dtw) distance can cope with temporal variations but stores and processes time series in a form as if the dtw-distance cannot cope with such variations. To address this inconsistency, we first show that the dtw-distance is not warping-invariant—despite its name and contrary to its characterization in some publications. The lack of warping-invariance contributes to the inconsistency mentioned above and to a strange behavior. To eliminate these peculiarities, we convert the dtw-distance to a warping-invariant semi-metric, called time-warp-invariant (twi) distance. Empirical results suggest that the error rates of the twi and dtw nearest-neighbor classifier are practically equivalent in a Bayesian sense. However, the twi-distance requires less storage and computation time than the dtw-distance for a broad range of problems. These results challenge the current practice of applying the dtw-distance in nearest-neighbor classification and suggest the proposed twi-distance as a more efficient and consistent option. KW - Nearest-neighbor rule KW - Dynamic time warping KW - Time series KW - Semi-metric Y1 - 2019 U6 - https://doi.org/10.1016/j.patcog.2019.05.016 VL - 94 IS - October SP - 35 EP - 52 PB - Elsevier ER - TY - JOUR A1 - Mauerer, Wolfgang A1 - Silberhorn, Christine T1 - Quantum key distribution with passive decoy state selection JF - Physical Review A N2 - We propose a quantum key distribution scheme which closely matches the performance of a perfect single photon source. It nearly attains the physical upper bound in terms of key generation rate and maximally achievable distance. Our scheme relies on a practical setup based on a parametric downconversion source and present day, nonideal photon-number detection. Arbitrary experimental imperfections which lead to bit errors are included. We select decoy states by classical postprocessing. This allows one to improve the effective signal statistics and achievable distance. Y1 - 2007 U6 - https://doi.org/10.1103/physreva.75.050305 VL - 75 IS - 5 PB - American Physical Society ER - TY - JOUR A1 - Jain, Brijnesh T1 - Sufficient conditions for the existence of a sample mean of time series under dynamic time warping JF - Annals of Mathematics and Artificial Intelligence N2 - Time series averaging is an important subroutine for several time series data mining tasks. The most successful approaches formulate the problem of time series averaging as an optimization problem based on the dynamic time warping (DTW) distance. The existence of an optimal solution, called sample mean, is an open problem for more than four decades. Its existence is a necessary prerequisite to formulate exact algorithms, to derive complexity results, and to study statistical consistency. In this article, we propose sufficient conditions for the existence of a sample mean. A key result for deriving the proposed sufficient conditions is the Reduction Theorem that provides an upper bound for the minimum length of a sample mean. Y1 - 2020 U6 - https://doi.org/10.1007/s10472-019-09682-2 VL - 88 SP - 313 EP - 346 PB - Springer Nature ER - TY - BOOK A1 - Mauerer, Wolfgang T1 - Professional Linux kernel architecture T3 - Wrox professional guides N2 - Find an introduction to the architecture, concepts and algorithms of the Linux kernel in Professional Linux Kernel Architecture, a guide to the kernel sources and large number of connections among subsystems. Find an introduction to the relevant structures and functions exported by the kernel to userland, understand the theoretical and conceptual aspects of the Linux kernel and Unix derivatives, and gain a deeper understanding of the kernel. Learn how to reduce the vast amount of information contained in the kernel sources and obtain the skills necessary to understand the kernel sources. KW - Architektur KW - Kernel KW - Linux Y1 - 2008 SN - 9780470343432 PB - Wiley CY - Indianapolis ER - TY - BOOK A1 - Mauerer, Wolfgang T1 - Textverarbeitung mit LATEX 2e [2 epsilon] unter UNIX KW - LATEX 2E KW - Textverarbeitung KW - UNIX Y1 - 1997 SN - 9783446189096 PB - Hanser CY - München ER - TY - JOUR A1 - Mauerer, Wolfgang T1 - Gimp-Perl: Gimp scripting for the rest of us JF - Linux Gazette Y1 - 2000 UR - https://linuxgazette.net/issue51/mauerer.html SN - 1934-371X IS - 51 ER - TY - RPRT A1 - Höller, Christoph A1 - Quirt, J. David A1 - Mahn, Jeffrey A1 - Müller-Trapet, Markus T1 - Guide to calculating airborne sound transmission in buildings N2 - In recent years, the science and engineering for controlling sound transmission in buildings have shifted from a focus on individual assemblies such as walls or floors, to a focus on performance of the complete system. Standardized procedures for calculating the overall transmission, combined with standardized measurements to characterize sub-assemblies, provide much better prediction of sound transmission between adjacent indoor spaces. The International Standards Organization (ISO) has published a calculation method, ISO 15712-1 that uses laboratory test data for sub-assemblies such as walls and floors as inputs for a detailed procedure to calculate the expected sound transmission between adjacent rooms in a building. This standard works very well for some types of construction, but to use it in a North American context one must overcome two obstacles – incompatibility with the ASTM standards used by our construction industry, and low accuracy of its predictions for lightweight wood or steel frame construction. To bypass limitations of ISO 15712-1, this Guide explains how to merge ASTM and ISO test data in the ISO calculation procedure, and provides recommendations for applying extended measurement and calculation procedures for specific common types of construction. This Guide was developed in a project established by the National Research Council of Canada to support the transition of construction industry practice to using apparent sound transmission class (ASTC) for sound control objectives in the National Building Code of Canada (NBCC). However, the potential range of application goes beyond the minimum requirements of the NBCC – the Guide also facilitates design to provide enhanced sound insulation, and should be generally applicable to construction in both Canada and the USA. This publication contains a limited set of examples for several types of construction, to provide an introduction and overview of the ASTC calculation procedure. Additional examples and measurement data can be found in the companion documents to this Guide, namely NRC Research Reports RR-333 to RR-337. Furthermore, the calculation procedure outlined and illustrated in this Guide is also used by the software web application soundPATHS, which is available for free on the website of the National Research Council of Canada (see the references in Section 7 of this Guide for access details). Au cours des dernières années, les scientifiques et les ingénieurs ont fait porter leurs efforts en matière d’atténuation de la transmission du son dans les bâtiments davantage sur le rendement du système dans sa totalité que sur les ensembles de construction individuels. Les méthodes normalisées de calcul de la transmission globale, combinées à des mesures normalisées de caractérisation des sous-ensembles, permettent de mieux prédire la transmission du son entre des espaces intérieurs adjacents. L’Organisation internationale de normalisation (ISO) a publié une méthode de calcul, la norme ISO 15712-1, qui utilise des données d’essai en laboratoire pour les sous-ensembles, comme les murs et les planchers, comme données d’entrée en vue d’une méthode détaillée de calcul de la transmission du son prévue entre des pièces adjacentes dans un bâtiment. Cette norme fonctionne très bien pour certains types de construction, mais pour l’utiliser dans un contexte nord-américain, il faut surmonter deux obstacles – l’incompatibilité avec les normes ASTM utilisées par notre industrie de la construction et la faible exactitude de ses prévisions pour la construction à ossature de bois ou d’acier légère. Pour contourner les limites de la norme ISO 15712-1, le présent guide explique comment fusionner les données d’essai de l’ISO et de l’ASTM dans la méthode de calcul de l’ISO, et formule des recommandations relativement à l’application de méthodes élargies de mesure et de calcul pour des types de construction courants. Le présent guide a été élaboré dans le cadre d’un projet mis sur pied par le Conseil national de recherches du Canada afin d’appuyer la transition de la pratique de l’industrie de la construction vers l’utilisation d’un indice de transmission du son apparent (ITSA) satisfaisant aux objectifs de réduction rigoureux du Code national du bâtiment du Canada (CNBC). Toutefois, l’éventail potentiel d’applications va au-delà des exigences minimales du CNBC – le Guide facilite aussi une conception visant à améliorer l’insonorisation et devrait s’appliquer de façon générale à la construction tant au Canada qu’aux États-Unis. La présente publication contient un ensemble limité d’exemples pour plusieurs types de construction, afin de fournir une introduction et un aperçu de la méthode de calcul de l’ITSA. On trouvera d’autres exemples et données de mesure dans les documents d’accompagnement du présent guide, à savoir, les rapports de recherche RR-333 à RR-337 du CNRC. De plus, la méthode de calcul décrite et illustrée dans le présent guide est également utilisée par l’application Web soundPATHS, disponible gratuitement sur le site Web du Conseil national de recherches du Canada (voir les références à la section 7 du présent guide pour les détails d’accès). KW - airborne sound KW - apparent sound transmission class KW - ASTC KW - building KW - building acoustics KW - CLT KW - concrete KW - cross-laminated timber KW - Delta STC KW - flanking KW - hybrid KW - impact noise KW - ISO 12354 KW - ISO 15712 KW - Kij KW - linings KW - masonry KW - National Building Code Canada KW - NBCC KW - precast KW - sound KW - sound transmission KW - sound transmission class KW - STC KW - steel-framed KW - structure-borne sound KW - timber KW - transmission KW - wood-framed KW - ΔSTC KW - ΔTL Y1 - 2019 U6 - https://doi.org/10.4224/40001814 PB - National Research Council of Canada. Construction ET - 5th edition ER - TY - RPRT A1 - Höller, Christoph A1 - Zeitler, Berndt A1 - Sabourin, Ivan T1 - Airborne and impact sound insulation data for cold-formed steel-framed walls and floors N2 - This report presents the results of an extensive series of direct sound insulation tests of cold-formed steel-framed walls and floors. The direct airborne sound insulation of 30 walls with cold-formed steel framing was measured in accordance with ASTM E90-09. The walls had steel studs with a depth of 92 mm (3-5/8”) or 152 mm (6”), and with a steel thickness of 1.09 mm (0.043”) or 1.37 mm (0.054”). Other parameters that were investigated included the number of layers and thickness of gypsum board, the cavity insulation, the stud spacing, and the use of resilient channels. The test results for some non-standard wall configurations that were tested for research purposes (e.g. for walls with gypsum board on one side only) are also included in this report. The direct airborne and impact sound insulation of 17 floors with cold-formed steel framing was measured in accordance with ASTM E90-09 and ASTM E492-09, respectively. The floors had steel joists with a depth of 254 mm (10”) or 317 mm (12.5”), and with a steel thickness of 1.37 mm (0.054”). The top surface of the floor/ceiling assemblies was composed of a corrugated steel deck with poured gypsum concrete, while the bottom surface was composed of a gypsum board ceiling on resilient channels. The influence of the joist depth and the number of layers and thickness of the ceiling gypsum board was investigated, as well as the influence of several floor coverings (e.g. laminate or carpet). The report presents the detailed specimen descriptions and specimen properties and the results from the standardized tests according to ASTM E90-09 and ASTM E492-09. Brief analyses of the parameters affecting the sound insulation of the steel-framed assemblies are provided. The tests presented in this report were part of a large research study that also included an investigation into the flanking sound transmission in cold-formed steel-framed buildings. The results of that study are described in the NRC Research Report RR-337, “Apparent Sound Insulation in Cold-Formed Steel-Framed Buildings” [1]. The NRC Research Report RR-337 also includes some of the airborne sound insulation results presented here, albeit without listing the detailed specimen descriptions and specimen properties that are provided in this report. Y1 - 2018 U6 - https://doi.org/10.4224/23002823 PB - National Research Council of Canada. Construction ER - TY - CHAP A1 - Voß, Marcus A1 - Jain, Brijnesh A1 - Albayrak, Sahin T1 - Subgradient Methods for Averaging Household Load Profiles under Local Permutations T2 - 2019 IEEE Milan PowerTech, 23-27 June 2019, Milan, Italy N2 - The sample mean is one of the most fundamental concepts in statistics with far-reaching implications for data mining and pattern recognition. Household load profiles are compared to the aggregated levels more intermittent and a specific error measure based on local permutations has been proposed to cope with this when comparing profiles. We formally describe a distance based on this error, the local permutation invariant (LPI) distance, and introduce the sample mean problem in the LPI space. An existing exact solution has exponential complexity and is only tractable for very few profiles. We propose three subgradient-based approximation algorithms and compare them empirically on 100 households of the CER dataset. We find that stochastic subgradient descent can approximate the mean best, while the majorize-minimize mean is a good compromise for applications as no hyperparameter-tuning is needed. We show how the algorithms can be used in forecasting and clustering to achieve more appropriate results than by using the arithmetic mean. KW - Distance measurement KW - Load modeling KW - Approximation methods Y1 - 2019 SN - 978-1-5386-4723-3 U6 - https://doi.org/10.1109/PTC.2019.8810783 SP - 2684 EP - 2689 PB - IEEE ER - TY - JOUR A1 - Höller, Christoph A1 - Gibbs, Barry M. T1 - Indirect determination of the mobility of structure-borne sound sources JF - Journal of Sound and Vibration N2 - Methods are considered for the indirect determination of the mobility of structure-borne sound sources. Instead of performing measurements on the source in the free state, the source mobility is obtained from measurements made in-situ. This approach is beneficial if the source is difficult to suspend, or if it contains nonlinear structural elements. Two formulations for an indirect source mobility are derived theoretically. The first requires measurement of velocities at or near to the contact points. The second involves measurement of remote velocities only. Neither of the methods requires excitation at the contacts in the coupled state. Numerical simulations of coupled beams are used to validate the two methods and investigate their accuracy and reliability with respect to typical measurement errors, such as background noise and inaccuracies in sensor positioning. It is found that these can have a significant effect on the methods considered. Several experimental case studies with single-contact and multi-contact sources are performed. The results confirm the validity of the two methods in principle, but highlight their sensitivity to experimental errors. In a representative case study with a fan unit, average errors range between ±5 dB and ±10 dB, with occasional errors of up to 30 dB. Y1 - 2015 U6 - https://doi.org/10.1016/j.jsv.2015.01.011 VL - 344 SP - 38 EP - 58 PB - Elsevier ER - TY - RPRT A1 - Höller, Christoph A1 - Mahn, Jeffrey A1 - Quirt, David A1 - Schoenwald, Stefan A1 - Zeitler, Berndt T1 - Apparent sound insulation in cross-laminated timber buildings N2 - This Report presents the results from experimental studies of airborne sound transmission, together with an explanation of calculation procedures to predict the apparent airborne sound transmission between adjacent spaces in a building whose construction is based on cross-laminated timber (CLT) panels. There are several types of CLT constructions which are commercially available in Canada, but this study only focused on CLT panels that have adhesive between the faces of the timber elements in adjacent layers, but no adhesive bonding the adjacent timber elements within a given layer. There were noticeable gaps (up to 3 mm wide) between some of the timber elements comprising each layer of the CLT assembly. These CLT panels could be called “Face-Laminated CLT Panels” but are simply referred to as CLT panels in this Report. Another form of CLT panels has adhesive between the faces of the timber elements in adjacent layers as well as adhesive to bond the adjacent timber elements within a given layer. These are referred to as “Fully-Bonded CLT Panels” in this Report. Because fully-bonded CLT panels have different properties than face-laminated CLT panels, the sound transmission data and predictions in this Report do not apply to fully-bonded CLT panels. Y1 - 2017 U6 - https://doi.org/10.4224/23002009 PB - National Research Council of Canada. Construction ER - TY - JOUR A1 - Höller, Christoph A1 - Gibbs, Barry M. T1 - Inverse Method to Obtain Blocked Forces of Vibrating Sound Sources in Buildings JF - Acta Acustica united with Acustica N2 - Vibrating sources, such as building service equipment, are major contributors to noise in buildings. In order to predict and subsequently reduce the sound pressure levels generated by these devices, it is necessary to first predict the total vibrational power injected by them into the supporting building structure. Whilst simplified methods are available for the calculation of the total power through all contacts, it would be beneficial to have more detailed knowledge of the dominant contact powers. For sources on low-mobility building elements, the contact powers are determined by the blocked force, along with the real part of the receiver mobility at each contact. This paper describes a novel inverse method to obtain the blocked forces at each contact. The method employs an instrumented reception plate, which is numerically modelled to allow optimum accelerometer positions to be selected, for any source and any location. The underlying theory and measurement procedure are described, and experimental validations are presented. Y1 - 2017 U6 - https://doi.org/10.3813/AAA.919092 VL - 103 IS - 4 SP - 639 EP - 649 PB - ingenta ER - TY - RPRT A1 - Höller, Christoph A1 - Quirt, David A1 - Zeitler, Berndt A1 - Sabourin, Ivan T1 - Apparent sound insulation in cold-formed steel-framed buildings N2 - This Report presents the results from substantial experimental studies of sound transmission, together with an explanation of calculation procedures to predict the sound transmission between adjacent spaces in a building whose walls and floors have cold-formed steel (CFS) framing. This first edition contains mainly data for loadbearing steel framing formed from sheet steel with thickness from 1.37 mm (16 gauge) to 0.94 mm (20 gauge). Non-loadbearing CFS studs formed from thinner steel (nominally 0.54 mm) are also commonly used but these are not included in the data tables for sound transmission through wall assemblies in this Report. KW - concrete block walls KW - floor KW - sound insulation KW - sound transmission Y1 - 2017 U6 - https://doi.org/10.4224/23001843 PB - National Research Council of Canada. Construction ER - TY - RPRT A1 - Höller, Christoph A1 - Müller-Trapet, Markus A1 - King, Frances A1 - Bradley, John T1 - Evaluation of the communication performance of the C4 chemical, biological, radiological and nuclear mask N2 - The Canadian Armed Forces (CAF) are using chemical, biological, radiological and nuclear (CBRN) general service respirators (GSRs) to defend against CBRN threats and hazards to protect personnel and ensure that they can safely and successfully carry out missions. The CBRN GSR currently in use by the CAF is the C4 respirator. The National Research Council of Canada assessed the communication performance of the C4 respirator. This report presents the results of the performance test. The method for assessing the communication performance used in this study was the NIOSH standard test procedure TEB-CBRN-APR-STP-0313 [1]. Other methods exist to evaluate the communication performance of respirators, but historically the NIOSH standard test procedure has been used. This report details the implementation and results of the tests conducted at the National Research Council of Canada, following the NIOSH standard test procedure. Y1 - 2018 U6 - https://doi.org/10.4224/23003981 ER - TY - RPRT A1 - Höller, Christoph A1 - Quirt, J. David A1 - Mueller-Trapet, Markus T1 - Apparent sound insulation in wood-framed buildings N2 - This Report presents the results from substantial experimental studies of sound transmission, together with an explanation of calculation procedures to predict the sound transmission between adjacent spaces in a building with wood-framed walls and floors. This Report presents two types of experimental data for wood-framed constructions: - Test data for direct sound transmission through typical wood-framed wall assemblies and wood-framed floor assemblies, plus a summary of trends for such constructions and references to compilations of additional data - Test data for flanking sound transmission measured following the procedures of ISO 10848 for coupled wall/floor junctions and wall/wall junctions Worked examples for calculating the apparent sound transmission class (ASTC) rating between adjacent dwelling units are presented to illustrate how the experimental data can be applied. Y1 - 2017 U6 - https://doi.org/10.4224/23002820 PB - National Research Council of Canada. Construction ER - TY - THES A1 - Höller, Christoph T1 - Indirect methods of obtaining activity and mobility of structure-borne sound sources N2 - The work reported in this thesis focuses on the development of indirect methods for the experimental determination of important source parameters for structure-borne sound source characterization. In the first part of the thesis, matrix inversion methods for the determination of blocked forces are investigated. A simplified measurement procedure is proposed which offers a solution to the two major challenges to these methods, namely the acquisition of the FRF matrix and the problems associated with matrix inversion. The proposed procedure involves a free, low-mobility receiver plate which is modelled numerically. Calculated FRFs are used together with measured velocity responses to inversely determine the blocked forces. It is found that while the method has great potential in principle, in practice the accurate modelling of the receiver plate is of critical importance. In the second part of the thesis, three formulations are considered for the indirect determination of source mobility. Instead of performing measurements on the source in the free state, the source mobility is obtained from measurements made in-situ. This approach is beneficial if the source is difficult to suspend, or if it contains non-linear structural elements. The three formulations are validated numerically and experimentally. It is found that the methods can quantify source mobilities of single-contact and multi-contact sources from in-situ measurements. However, typical measurement errors, such as background noise or inaccuracies in sensor positioning, can significantly reduce the accuracy and reliability of the methods. In the final part of the thesis, the reception plate method for the determination of the power injected by a high-mobility source into a low-mobility receiver is reviewed, and a source substitution method proposed as a development. The substitution method circumvents problems that may arise when the reception plate method is applied to coupled walls and floors. A special focus of investigation is on the calibration of the receiver structure. It is found that the calibration can be performed with shaker or hammer, and that an average calibration factor may be used. The source substitution method thus offers a potential alternative to the reception plate method, for application with coupled plates. Y1 - 2013 UR - https://livrepository.liverpool.ac.uk/id/eprint/14233 N1 - University of Liverpool, Dissertation PB - University of Liverpool CY - Liverpool ER - TY - JOUR A1 - Lievens, Matthias A1 - Höller, Christoph A1 - Dietrich, Pascal A1 - Vorländer, Michael T1 - Predicting the Interaction Between Structure-Borne Sound Sources and Receiver Structures from Independently Measured Quantities BT - Case Study of a Washing Machine on a Wooden Joist Floor JF - Acta Acustica united with Acustica N2 - Structure-borne sound sources are usually characterised by their source activity and source mobility. By combining this data with the mobility of receiver structures it is theoretically possible to predict the sound pressure level in a building. In a case study of a washing machine on a wooden joist floor this prediction process was investigated. The prediction was based on the normal force component only. The contact area at the feet of the washing machine was made as small as possible to avoid the influence of moments while the in-plane components were assumed negligible. These conditions proved to allow for accurate predictions in the coupled state in a previous publication [1]. The results show that the prediction from independently measured normal source and receiver quantities yields large errors below 125 Hz as a consequence of the above assumption. Between 125 and 900 Hz the error of the prediction is within ± 5 dB. The case study further investigated two assumptions frequently encountered in practice: low and high-mobility sources and no cross-coupling between the feet Y1 - 2014 U6 - https://doi.org/10.3813/AAA.918688 VL - 100 IS - 1 SP - 79 EP - 92 PB - European Acoustics Association (EAA) ER - TY - RPRT A1 - Mahn, Jeffrey A1 - Quirt, David A1 - Höller, Christoph A1 - Müller-Trapet, Markus T1 - Addendum to RR-335: sound transmission through Nail-Laminated Timber (NLT) assemblies N2 - This report is published as an addendum to NRC Research Report RR-335 “Apparent Sound Insulation in Cross-Laminated Timber Buildings." It is intended that this addendum will be merged with RR-335 in the future as a report for predicting the sound insulation in buildings using mass-timber constructions including NLT assemblies. This report presents the results from experimental studies of airborne sound transmission through assemblies of nail-laminated timber (NLT) with various linings. To put the data presented in this report in the proper context, this report begins with a brief explanation of calculation procedures to predict the apparent sound transmission class (ASTC) between adjacent spaces in a building whose structure is a combination of mass-timber assemblies such as nail-laminated timber (NLT) or cross-laminated timber (CLT) panels. Y1 - 2018 U6 - https://doi.org/10.4224/40000417 PB - National Research Council of Canada. Construction ER - TY - CHAP A1 - Mauerer, Wolfgang A1 - Silberhorn, Christine T1 - Numerical Analysis of Parametric Downconversion T2 - AIP Conference Proceedings N2 - Parametric downconversion (PDC) is a popular technique to produce twin beams of photons that are entangled in multiple degrees of freedom. The generated states form the basis for numerous applications that require entanglement. An exact quantification of this resource is therefore essential, for instance for quantum cryptography that relies on a complete knowledge of the correlation contained in the state. While the determination of an entanglement monotone for the PDC process is only possible analytically in special cases, an exact calculation must usually be performed numerically. Recent work by Mikhailova et al. [2] analyses a certain class of PDC states for which the concurrence entanglement measure can be obtained by an analytical approximation. In this contribution, we analyse the validity of the approximation by comparison with exact numerical methods. Y1 - 2009 U6 - https://doi.org/10.1063/1.3131312 VL - 1110 IS - 1 PB - AIP Publishing ER - TY - CHAP A1 - Höller, Christoph A1 - Mahn, Jeffrey T1 - The Measurement of the Total and Resonant Radiation Efficiencies for Lightweight Constructions T2 - Taming Noise and Moving Quiet. 46rd International Congress on Noise Control Engineering (Internoise 2017), 27-30 August 2017, Hong Kong Y1 - 2017 UR - 978-1-5108-5238-9 UR - http://toc.proceedings.com/37265webtoc.pdf SP - 1931 EP - 1937 PB - International Institute of Noise Control Engineering (I-INCE) ER - TY - CHAP A1 - Höller, Christoph T1 - Review and Comparison of ASTM and ISO Standards on Sound Transmission in Buildings T2 - Impact of noise control engineering : 47th International Congress and Exposition on Noise Control Engineering (INTERNOISE 2018) : Chicago, Illinois, USA, 26-29 August 2018 Y1 - 2018 UR - https://internoise2018.org/ PB - Curran Associates, Inc. CY - Red Hook, NY ER - TY - GEN A1 - Singh, Max Diamond T1 - MDR Implementation Status and Lessons Learned from the Past Months: A Notified Body Perspective T2 - Cambridge Healthtech Institute's 2nd Annual Medical Device Clinical Trial Design and Operations: Trial Design and Technology to Optimize Medical Device Trials, Orlando, Florida + Virtual, 02.-03.03.2021 Y1 - PB - Cambridge Innovation Institute ER - TY - GEN A1 - Singh, Max Diamond T1 - MDR implementation status & lessons learned BT - MDR-Audtis – Best Practive & Learning, Tuttlingen, 10.02.2021 Y1 - 2021 ER - TY - JOUR A1 - Schulz, Carsten A1 - Schwarz, Colin T1 - Drivetrain fatigue strength characteristics of model-predictive control for wind turbines JF - Wind Energy N2 - Wind turbines play a crucial role in the revolution towards renewable resources. They need to be economically competitive to be sustainable. This still requires to lower the cost of energy (COE). To this end, nonlinear model predictive control (NMPC) is used within this paper. As known from literature, NMPC significantly improves the energy extracting performance as well as the mitigation of tower loads of wind turbines. As it is shown in this paper, the drivetrain fatigue strength drops disproportionally in parallel, which either increases the demands on the turbine design or decreases the lifetime of drivetrain components. Without additional boundary conditions to the underlying optimal control problems (OCPs), the application of energy-maximizing NMPC might so even raise the COE. Only penalizing axial torque oscillations by quadratic terms decreases energy-extracting performance below the level of classical wind turbine controllers. This makes more sophisticated conditions necessary. In this paper, the increase of the drivetrain damage by NMPC is analyzed, and appropriate boundary conditions are derived, to balance the two contradicting objectives of energy maximization and drivetrain load mitigation. An NMPC approach based on indirect methods is used, to obtain a solution of the OCPs very efficiently. It applies the Hamilton equations and Pontryagin's maximum principle. Its accuracy and efficiency to solve OCPs was presented over the last decades. Y1 - 2020 U6 - https://doi.org/10.1002/we.2520 VL - 23 IS - 12 SP - 2137 EP - 2149 PB - Wiley ER - TY - JOUR A1 - Singh, Max Diamond A1 - Terzidis, O. T1 - Introducing Innovation Phase Transition JF - International Journal of Innovation Science N2 - Innovation diffusion points toward how innovations spread into the market after launch. This paper investigates diffusion dynamics at market entry time and proposes a new evolution pattern at the intersection between inventions and innovations. With this in mind, we initially prove that patent filings correlate with new product introductions in the U.S. spine market. Then we test our new theory supposing that certain patent filing threshold numbers accelerate strong economic returns in terms of innovations. We find that firms hitting certain patent filing thresholds significantly increase their product launches in the mentioned market. Moreover, the results seem to indicate that economic returns of inventions may be measured substantially. Thus, this paper suggests a new research area by utilizing our proposed concept about an Innovation Outcome Trigger Value (IOTV). Furthermore, the implications may also be interesting for practitioners, since we empirically prove that inventive activities turn out to be worthwhile, indeed. Y1 - 2015 U6 - https://doi.org/10.1108/IJIS-07-04-2015-B003 SN - 1757-2223 VL - 7 IS - 4 SP - 249 EP - 262 PB - Emerald ER - TY - CHAP A1 - Höller, Christoph A1 - Quirt, D. A1 - Zeitler, Berndt A1 - Sabourin, I. T1 - Apparent sound insulation in cold-formed steel-framed buildings T2 - 24th International Congress on Sound and Vibration (ICSV 24), 23-27 July 2017, London, UK Y1 - 2017 UR - https://www.iiav.org/icsv24/index.php?va=viewpage&vaid=366 PB - Curran Associates, Inc ER - TY - CHAP A1 - Schulz, Carsten A1 - Schwarz, C. T1 - Indirect Model Predictive Control and its Impact on the Fatigue Strength of the Drivetrain T2 - 10. VDI-Fachtagung Schwingungen von Windenergieanlagen 2019 : Bremen, 04.-05. Juni 2019 Y1 - 2019 SN - 978-3-18-092346-8 ER - TY - CHAP A1 - Höller, Christoph A1 - Zeitler, Berndt A1 - Schoenwald, Stefan T1 - Anwendung von Cremers parallelen Platten auf leichte Bauelemente T2 - Fortschritte der Akustik - DAGA 2017 : 43. Deutsche Jahrestagung für Akustik, 6.-9. März 2017 in Kiel Y1 - 2017 UR - https://pub.dega-akustik.de/DAGA_2017/data/daga17_all.pdf SP - 521 EP - 524 PB - Deutsche Gesellschaft für Akustik e.V. ER - TY - CHAP A1 - Schulz, Carsten A1 - Goedeke, Arne ED - Schlecht, Berthold T1 - Universell einsetzbares Verfahren zur fortwährenden Überwachung von Ermüdungsrissen an wechselnd beanspruchten Strukturbauteilen T2 - DMK - Dresdner Maschinenelemente Kolloquium, 2019, Dresden Y1 - 2019 SP - 703 EP - 712 ER - TY - CHAP A1 - Schulz, Carsten T1 - Usage of Digital Twins for Predictive Maintenance T2 - NAFEMS World Congress, 17.-20. Juni 2019, Quebec Y1 - 2019 UR - https://www.nafems.org/publications/resource_center/nwc_19_65/ SN - 978-1-910643-52-5 ER - TY - CHAP A1 - Schwarz, C. A1 - Schulz, Carsten T1 - Moderne, schädigungsreduzierende Ansätze zur Regelung einer Windenergieanlage in einem breiten Lastspektrum T2 - Dresdner Maschinenelemente Kolloquium : DMK 2019 : 26.-27. Nov. Y1 - 2019 SN - 978-3-96548-055-1 SP - 601 EP - 616 PB - Sierke Verlag CY - Göttingen ER - TY - GEN A1 - Schulz, Carsten T1 - Maintenance Prediction using Realtime Digital Twins T2 - Dassault Systèmes User Conference 2018, Hanau, Germany, 4-6 December Y1 - 2018 ER - TY - CHAP A1 - Goedeke, Arne A1 - Schulz, Carsten A1 - Gruss, H. A1 - Gläser, T. ED - Schmidt, Thorsten T1 - Verfahren zur Aufnahme des Belastungs-Zeit-Verlaufs von Brückenkranen für theoretische Restlebensdauerberechnungen T2 - Krane im Fokus von Ressourcenschonung und Energieeffizienz : 26. Kranfachtagung, 8. März 2018, Technische Universität Dresden: Tagungsband mit den 17 Fachbeiträgen Y1 - 2018 SN - 978-3-86780-560-5 PB - Selbstverlag der Technischen Universität Dresden ER - TY - CHAP A1 - Schulz, Carsten A1 - Mulski, Steve T1 - Auslegung von Getrieben in WEA unter Berücksichtigung flexibler Zahnräder T2 - 6. VDI-Fachtagung Schwingungen von Windenergieanlagen 2015 : Bremen, 16. und 17. Juni 2015 Y1 - 2015 SN - 978-3-18-092242-3 PB - VDI-Verlag CY - Düsseldorf ER - TY - JOUR A1 - Goedeke, Arne A1 - Gruss, H. A1 - Schulz, Carsten A1 - Gläser, T. T1 - Predictive Maintenance im Kranbau JF - Hebezeuge, Fördermittel : technische Logistik Y1 - 2018 UR - https://www.technische-logistik.net/fachmagazin/ausgabe-62018-15888.html IS - 6 SP - 30 EP - 31 PB - Huss CY - Berlin ER - TY - CHAP A1 - Schulz, Carsten A1 - Mulski, Steve T1 - About the Necessity of Flexible Gears T2 - VDI International Conferences on Gears, October 5-7 2015, München Y1 - 2015 SN - 978-3-18-092255-3 SP - 471 EP - 482 PB - VDI Verlag CY - Düsseldorf ER - TY - CHAP A1 - Schulz, Carsten A1 - Mulski, Steve T1 - Modelling and Simulating Flexible Gears – A solution-oriented approach T2 - NAFEMS World Congress 2015 incorporating the 2nd International Conference on SPDM : proceedings, San Diego, Calif. Y1 - 2015 CY - Hamilton ER - TY - CHAP A1 - Schulz, Carsten A1 - Mulski, Steve T1 - Einfluss der Radkörpergeometrie auf das Übertragungsverhalten T2 - DMK - Dresdner Maschinenelemente Kolloquium, 2015, Dresden Y1 - 2015 SN - 978-3-96548-055-1 ER - TY - GEN A1 - Schulz, Carsten A1 - Kiess, B. A1 - Goedeke, Arne T1 - Impact of Elasticity on the Transmission Behavior of Thin Ring Gears T2 - Wind and Drivetrain Conference, 4, 2018, Hamburg Y1 - 2018 ER - TY - GEN A1 - Schulz, Carsten A1 - Gruss, H. A1 - Voigt, S. T1 - Ganzheitliche Instandhaltungsplanung für Industriegetriebe T2 - Nachwuchswissenschaftlerkonferenz - NWK, 19, 2018, Köthen Y1 - 2018 ER - TY - CHAP A1 - Schulz, Carsten A1 - Mulski, Steve T1 - Consideration of flexible Gears for detailed Gearbox Analysis T2 - Proceedings of DEWEK 2015, 19.-20.07.2015, Bremen, Deutschland Y1 - 2015 ER - TY - CHAP A1 - Schlecht, Berthold A1 - Schulz, Carsten A1 - Graneß, Henry ED - Jacobs, GEorg T1 - The importance of load input functions T2 - ATK 2015 : Tagungsband. 16. Antriebstechnisches Kolloquium ; Aachen, 03.-04. März 2014 Y1 - 2015 SN - 978-3-7528-5925-6 PB - BoD - Books on Demand CY - Norderstedt ER - TY - CHAP A1 - Schlecht, Berthold A1 - Schulz, Carsten A1 - Graneß, Henry ED - Jacobs, Georg T1 - Zur Bedeutung von Lasteingangsfunktionen T2 - ATK 2015 : Tagungsband. 16. Antriebstechnisches Kolloquium ; Aachen, 03.-04. März 2015 Y1 - 2015 SN - 978-3-7528-5925-6 PB - BoD - Books on Demand CY - Norderstedt ER - TY - RPRT A1 - Schlecht, Berthold A1 - Schulz, Carsten T1 - Untersuchung und Optimierung des dynamischen Verhaltens von Schaufelradantrieben Y1 - 2014 UR - https://fdbi.org/wp-content/uploads/abschlussbericht_srad_dyn_18_03_14.pdf ER - TY - CHAP A1 - Schlecht, Berthold A1 - Schulz, Carsten A1 - Graneß, Henry T1 - Die Mehrkörpersimulation als Grundlage der Systemanalyse T2 - Tagungsband zum 10. Aachener Kolloquium für Instandhaltung, Diagnose und Anlagenüberwachung (AKIDA) - 19./20. November 2014, Aachen Y1 - 2014 PB - Institut für Maschinentechnik der Rohstoffindustrie, RWTH Aachen CY - Aachen ER - TY - CHAP A1 - Schlecht, Berthold A1 - Graneß, Henry A1 - Schulz, Carsten T1 - Vergleich von Kardangelenkwellen und Flachzapfenspindeln T2 - Tagungsband zum 10. Aachener Kolloquium für Instandhaltung, Diagnose und Anlagenüberwachung (AKIDA) - 19./20. November 2014, Aachen Y1 - 2014 PB - Institut für Maschinentechnik der Rohstoffindustrie, RWTH Aachen CY - Aachen ER - TY - JOUR A1 - Schlecht, Berthold A1 - Schulz, Carsten A1 - Graneß, Henry T1 - Auswahlkriterium zur Bestimmung einer optimalen Schwingungsdämpfungsmaßnahme JF - Ant-Journal : anwendungsnahe Forschung für Antriebstechnik im Maschinenbau Y1 - 2014 VL - 53 IS - 3 SP - 3 EP - 8 PB - Vereinigte Fachverlag CY - Mainz ER - TY - CHAP A1 - Schlecht, Berthold A1 - Schulz, Carsten A1 - Graneß, Henry T1 - Die Schädigungssumme als objektives Auswahlkriterium der Systemdynamik T2 - SMK - Schweizer Maschinenelemente Kolloquium, 25.-26. November 2014, Rapperswill Y1 - 2014 ER - TY - CHAP A1 - Schlecht, Berthold A1 - Schulz, Carsten T1 - Aktive Schwingungsdämpfung in drehzahlgeregelten mechatronischen Antriebssystemen T2 - DMK - Dresdner Maschinenelemente Kolloquium, 2013, Dresden Y1 - 2013 ER - TY - THES A1 - Schulz, Carsten T1 - Ganzheitliche Systemanalyse von Schaufelradantrieben Y1 - 2014 N1 - TU Dresden, Dissertation CY - Dresden ER - TY - JOUR A1 - Schlecht, Berthold A1 - Schulz, Carsten A1 - Franze, J. T1 - System analysis of large-scale lignite mining equipment using modular mapping in MBS models JF - World of mining, surface & underground : internationale Fachzeitschrift für den Bergbau Y1 - 2013 VL - 65 IS - 4 PB - GDMB CY - Clausthal-Zellerfeld ER - TY - CHAP A1 - Schlecht, Berthold A1 - Schulz, Carsten A1 - Franze, J. T1 - Systemanalyse von Tagebaugroßgeräten durch modulare Abbildung in MKS-Modellen T2 - AKIDA, 9. Aachener Kolloquium für Instandhaltung, Diagnose und Anlagenüberwachung, 14./15. November 2012, Aachen Y1 - 2012 ER - TY - JOUR A1 - Schlecht, Berthold A1 - Schulz, Carsten A1 - Franze, J. T1 - Systemanalyse von Tagebaugroßgeräten durch modulare Abbildung in MKS-Modellen JF - World of mining, surface & underground : internationale Fachzeitschrift für den Bergbau Y1 - 2013 VL - 65 IS - 4 SP - 219 EP - 226 PB - GDMB CY - Clausthal-Zellerfeld ER - TY - JOUR A1 - Schlecht, Berthold A1 - Schulz, Carsten T1 - Holistic Simulation of a Bucket Wheel Excavator JF - Simpack News Y1 - 2013 UR - https://www.3ds.com/products-services/simulia/products/simpack/ IS - 2 SP - 2 EP - 6 PB - INTEC CY - Wessling ER - TY - GEN A1 - Schlecht, Berthold A1 - Schulz, Carsten T1 - Detaillierte Abbildung komplexer Anregungsspektren in Mehrkörpersystem-Modellen zur Untersuchung kritischer Betriebszustände T2 - VDI Wissensforum - Schwingungsanalyse 2013, Stuttgart, 06./07. März 2013 Y1 - 2013 ER - TY - CHAP A1 - Schulze, T. A1 - Schulz, Carsten A1 - Rosenlöcher, T. T1 - Critical evaluation of long-time measurements and measurement-based simulation of selected operating conditions T2 - COWEC 2013, 18. und 19. Juni 2013, Berlin Y1 - 2013 ER - TY - CHAP A1 - Schlecht, Berthold A1 - Schulz, Carsten T1 - Ganzheitliche Lastbetrachtung von Antriebssystemen mithilfe komplexer Mehrkörpermodelle T2 - 8. VDI Fachtagung. Schwingungen in Antrieben, 05. und 06. November 2013, Fulda Y1 - 2013 ER - TY - CHAP A1 - Schlecht, Berthold A1 - Schulz, Carsten ED - Neubert, Sebastian ED - Jacobs, Georg T1 - Modellbildung und Simulation eines Tagebaugroßgerätes T2 - ATK 2013 - 15. Antriebstechnisches Kolloquium - 19.-20. März 2013 Y1 - 2013 PB - RWTH Universität Aachen ER - TY - CHAP A1 - Schlecht, Berthold A1 - Schulz, Carsten T1 - Zum Einsatz modularer MKS-Modelle zur Systemanalyse von Tagebaugroßgeräten T2 - Groß- und Sondergetriebe im Schwermaschinen- und Anlagenbau 2013, Essen Y1 - 2013 ER - TY - JOUR A1 - Singh, Max Diamond A1 - Russ, Jochen A1 - Terzidis, Orestis T1 - The Impact of the ObamaCare Excise Tax on Innovation and Entrepreneurship – Early Empirical Findings JF - International Journal of Innovation Science N2 - This study addresses aspects of governmental influence on innovation by analyzing the impact of the ObamaCare excise tax on the medical device industry. We initially give an overview of common approaches to measuring innovativeness and entrepreneurship, empirically assess whether existing metrics are suitable for investigating the innovation performance of the U.S. medical device industry, and define a new measure (firm innovation activity) for entrepreneurship. Then we perform a quantitative analysis to explore the impact of the tax. We analyze more than 60,000 product clearances from 1996 to 2013, using the FDA database. We find a significant relationship between product counts and revenues for one segment. Contrary to the present criticism of the excise tax, we find hardly any noteworthy response in either firm innovation activity or number of products launched in the year after the tax was introduced. The 2013 reduction of new product submissions is well within the limits of typical annual fluctuations observed in previous years. This provides a first indication that the excise tax act did not have a strong impact on innovative activities through the present. Y1 - 2015 U6 - https://doi.org/10.1260/1757-2223.7.2.75 VL - 7 IS - 2 SP - 75 EP - 90 PB - Emerald ER - TY - CHAP A1 - Schlecht, Berthold A1 - Schulze, T. A1 - Rosenlöcher, T. A1 - Schulz, Carsten T1 - Untersuchung von Großantrieben im Multi-Megawatt-Bereich mit Hilfe der Mehrkörpersystem-Simulation und der Finite-Elemente-Methode als Basis für die Betriebsfestigkeitsrechnung T2 - AKIDA, Aachener Kolloquium für Instandhaltung, Diagnose und Anlagenüberwachung, 17./18. November 2010 : Tagungsband zum 8. Aachener Kolloquium für Instandhaltung, Diagnose und Anlagenüberwachung Y1 - 2010 SN - 978-3-941277-08-3 SP - 371 EP - 380 PB - Zillekens CY - Stolberg ER - TY - CHAP A1 - Schlecht, Berthold A1 - Schulz, Carsten A1 - Rosenlöcher, T. A1 - Schulze, T. T1 - Untersuchung und Optimierung des dynamischen Verhaltens von Schaufelradantrieben T2 - AKIDA, Aachener Kolloquium für Instandhaltung, Diagnose und Anlagenüberwachung, 17./18. November 2010 : Tagungsband zum 8. Aachener Kolloquium für Instandhaltung, Diagnose und Anlagenüberwachung Y1 - 2010 SN - 978-3-941277-08-3 SP - 363 EP - 370 PB - Zillekens CY - Stolberg ER - TY - CHAP A1 - Schlecht, Berthold A1 - Mtauweg, S A1 - Schulz, Carsten T1 - Dynamische Untersuchung des Azimutsystems und der Windrichtungsnachführungsstrategie einer Windenergieanlage T2 - 3. VDI-Fachtagung Schwingungen von Windenergieanlagen 2012 mit Fachausstellung : Bremen, 07. und 08. Februar 2012 Y1 - 2012 SN - 978-3-18-092168-6 PB - VDI-Verl. CY - Düsseldorf ER - TY - CHAP A1 - Schlecht, Berthold A1 - Schulz, Carsten A1 - Kressner, M. T1 - Erstellung eines Grabwiderstandsmodells zur ganzheitlichen Simulation von Schaufelradantrieben T2 - 16. Fachtagung Schüttgutfördertechnik 2011 : Anlagen, Bauteile, Computersimulationen ; am 14. und 15. September in Magdeburg Y1 - 2011 SN - 978-3-930385-77-5 PB - LOGiSCH-Verlag ER - TY - CHAP A1 - Schlecht, Berthold A1 - Schulz, Carsten T1 - Erstellung eines modularen Mehrkörpermodells zur Abbildung des dynamischen Verhaltens von Schaufelradbaggern T2 - 5. Fachtagung Baumaschinentechnik 2012 : Energie, Mechatronik, Simulation ; [20.-21. September 2012, Dresden] ; Tagungsband Y1 - 2012 PB - FVB CY - Frankfurt am Main ER - TY - CHAP A1 - Schlecht, Berthold A1 - Schulz, Carsten T1 - Der modernisierte Schaufelradbagger – Ganzheitlicher Ansatz zur Leistungsoptimierung T2 - DMK 2011 : Dresdner Maschinenelemente Kolloquium ; 29. und 30. November 2011 ; [Tagungsband] Y1 - 2011 SN - 978-3-942710-49-7 PB - TUDpress CY - Dresden ER - TY - JOUR A1 - Schlecht, Berthold A1 - Schulz, Carsten A1 - Kressner, M. T1 - Erstellung eines Grabwiderstandsmodells zur ganzheitlichen Simulation von Schaufelradantrieben JF - Advanced Mining Solutions Y1 - 2012 UR - www.advanced-mining.com ER - TY - JOUR A1 - Geißler, Bastian A1 - Laumer, Tobias A1 - Wübbeke, Andrea A1 - Lakemeyer, Patrick A1 - Frick, Thomas A1 - Schöppner, Volker A1 - Schmidt, Michael T1 - Analysis of the interaction between the temperature field and the weld seam morphology in laser transmission welding by using two different discrete laser wavelengths JF - Journal of Laser Applications N2 - Laser transmission welding is a non-contact and efficient process technology for joining thermoplastic polymers. In the conventional process, laser sources in the wavelength range of 1 μm are usually used. Therefore, most of the laser radiation is transmitted through the upper joining partner and absorbed only in the lower joining partner. As a result, the possibilities to influence the temperature field especially in the upper joining partner are limited. To overcome these limitations, an additional thulium fiber-laser with a wavelength of 1.94 μm is used in this study and coaxially aligned with a diode laser. The use of an additional thulium fiber-laser leads to a significant absorption in the upper joining partner. Through this approach, it is shown that the temperature field and the weld seam geometry can be influenced by using these two different discrete laser wavelengths. Depending on the intensity distribution of both lasers, an increase of the size of the heat affected zone in the upper joining partner can be observed. In order to develop a better process understanding, a thermal finite element model is built up and verified by comparing the calculated size of the heat affected zone for different process parameters with the experimental data. The model is able to represent the influence of both laser sources on the temperature field and is used to calculate characteristics of the temperature field, such as maximum temperatures or cooling rates. The characteristics are then used to explain the weld seam morphology, such as occurrence and size of spherulitic structures in the weld seam. Y1 - 2018 U6 - https://doi.org/10.2351/1.5040617 SN - 1938-1387 VL - 30 IS - 3 PB - AIP Publishing ER - TY - JOUR A1 - Kuehn, Cornelius A1 - Mehl, Oliver A1 - Laumer, Tobias A1 - Witt, Gerd T1 - Comparison between the optical properties of injection molded and additive manufactured components JF - Procedia CIRP N2 - Fused Layer Manufacturing (FLM) is an additive technology based on polymer material extrusion. Due to variations in temperature during the manufacturing process and the resulting stress between the stacked layers, the final parts show anisotropic mechanical properties. One possible approach for their reduction is the immediate local preheating of the surface via laser radiation. At first, our research examines the influence of laser parameters as wavelength, power, velocity and area of impact for the preheating of the surface. In addition, an overview of possible parameter combinations is given based on the selection of raw materials, its colors, thicknesses and the manufacturing process. Initially, the absorption level of the materials regarding the emitted wavelength is detected using a spectrophotometer. Subsequently, preheating tests are conducted with different laser types while the temperature is determined by a thermal camera. The selected laser type is planned to get mounted on a prototype-machine for further in-situ preheating experiments on FLM parts during the manufacturing process. KW - additive manufacturing KW - FLM-Printing KW - injection molding KW - Laser assisted processes KW - Optical properties KW - Polymers KW - Preheating Y1 - 2018 U6 - https://doi.org/10.1016/j.procir.2018.08.106 VL - 74 SP - 259 EP - 263 PB - Elsevier ER - TY - JOUR A1 - Geißler, Bastian A1 - Laumer, Tobias A1 - Wübbeke, Andrea A1 - Frick, Thomas A1 - Schöppner, Volker A1 - Schmidt, Michael T1 - Analysis of the Weld Seam Morphology of Polypropylene in Laser Transmission Welding JF - Journal of Manufacturing Science and Engineering N2 - Laser transmission welding is a well-known joining technology for welding thermoplastics. Although the process is already used industrially, fundamental process-structure-property relationships are not fully understood and are therefore the subject of current research. One aspect of these mentioned process-structure-property relationships is the interaction between the temperature field during the welding process, the weld seam morphology of semi-crystalline thermoplastics, and the weld seam strength. In this study, the influence of the line energy on the weld seam morphology of polypropylenes is analyzed. For this purpose, the size of spherulites in the weld seam is investigated, as well as different occurring phases of polypropylene (a- and b-phase). It is shown that both the spherulite size of the a-phase and the amount of b-phase increase with increasing line energy. For the explanation and discussion of the results, a temperature-dependent thermal simulation model is used to derive characteristic attributes of the temperature field (maximum temperatures, cooling rates, temperature gradients). Y1 - 2018 U6 - https://doi.org/10.1115/1.4040876 VL - 140 IS - 11 PB - ASME ER - TY - JOUR A1 - Hupfeld, T. A1 - Laumer, Tobias A1 - Stichel, T. A1 - Schuffenhauer, T. A1 - Heberle, J. A1 - Schmidt, M. A1 - Barcikowski, S. A1 - Gökce, B. T1 - A new approach to coat PA12 powders with laser-generated nanoparticles for selective laser sintering JF - Procedia CIRP N2 - The modification of selective laser sintering (SLS) powder materials by nanoadditives offers the possibility to adapt the powder properties to the laser sintering process or the resulting part properties. To avoid agglomeration of the nanofiller, a new approach in which surfactant-free laser-generated colloidal nanoparticles are adsorbed onto the polymer surface directly in an aqueous solution is demonstrated. Based on this novel approach, polyamide 12 (PA12) powders are decorated with metal and oxide nanoparticles and processed via SLS. Electron microscopy and confocal laser scanning imaging are utilized to analyze the dispersion of the filler. KW - laser additive manufacturing KW - nanoparticles KW - polymer powders KW - pulsed laser ablation in liquids KW - selective laser sintering Y1 - 2018 U6 - https://doi.org/10.1016/j.procir.2018.08.103 VL - 74 SP - 244 EP - 248 PB - Elsevier ER - TY - CHAP A1 - Amend, Philipp A1 - Mrotzek, Tino A1 - Laumer, Tobias A1 - Wolf, Michel A1 - Roth, Stephan A1 - Gude, Maik A1 - Schmidt, Michael T1 - Experimental Investigations on Laser-based Hot-melt Bonding and Injection Molding for Laser-structured Metal Plastic Hybrids T2 - Laser in Manufacturing (LIM 2017), Munich, Germany N2 - The use of thermoplastics in lightweight construction is continuing to grow. This implies the need for suitable joining techniques to combine thermoplastics with other materials, such as metals, to gain tailored multi-material parts. In this paper latest results of experimental investigations on laser-based hot-melt bonding and injection molding for laser-structured metal plastic hybrids are presented. As materials stainless steel and short-fiber reinforced polyamide are used. The stainless steel surface is structured with a nanosecond pulse laser before joining to improve the mechanical adhesion between the dissimilar materials. Thereby, different structure depths in the range between 16.6 ± 1.2 µm and 66.5 ± 2.5 µm as well as different hatch distances between 70 and 300 µm are realized. The laser-based joining process is carried out irradiating the metallic surface multiple times. Positioned below the metal in T-joint configuration, the thermoplastic melts as a result of heat transfer and acts as hot-melt cohesive. Besides, hybrid joints are manufactured using injection molding. For experiments, the mold temperature as well as the melt temperature are varied. Regardless of the joining process, the hybrid joints are mechanically characterized by tensile tests. The results demonstrate that for both joining processes strong laser-structured metal plastic hybrids can be realized. KW - injection molding KW - laser structuring KW - Laser-based hot-melt bonding KW - multi-material design Y1 - 2017 UR - https://www.researchgate.net/publication/318110636_Experimental_Investigations_on_Laser-based_Hot-melt_Bonding_and_Injection_Molding_for_Laser-structured_Metal_Plastic_Hybrids SN - 978-3-87525-428-0 ER - TY - CHAP A1 - Amend, Philipp A1 - Laumer, Tobias A1 - Roth, Stephan A1 - Baat, Florian A1 - Schmidt, Michael T1 - Investigations on Laser-based Hot-melt Bonding of Additive Manufactured Plastic Parts to Metal Sheets for Strong and Tight Multi-material Joints T2 - Laser in Manufacturing (LIM 2017), Munich, Germany N2 - In this paper, first results regarding the realization of laser-based hot-melt bonding of additive manufactured plastics parts to metal sheets for strong and tight multi-material joints are presented. Compared to earlier investigations, in which nearly solely extruded plastic materials were applied, the use of additive manufactured plastics complements the research field with a promising approach. Besides the typical advantages of multi-material joints regarding weight reduction and high strengths, such parts can meet the needs of constructional freedom and the avoiding of tool costs. Materials used for this paper are aluminum (AlMg3), stainless steel (1.4301) and polyamide 12 (PA12). The performed experiments resulting in multi-material joints between metal and polyamide. The realized specimens undergo a tensile shear test and a tightness test, in which the characteristics of the joints are determined. KW - additive manufacturing KW - Laser-based hot-melt bonding KW - multi-material joint Y1 - 2017 UR - https://www.researchgate.net/publication/318110485_Investigations_on_Laser-based_Hot-melt_Bonding_of_Additive_Manufactured_Plastic_Parts_to_Metal_Sheets_for_Strong_and_Tight_Multi-material_Joint ER - TY - JOUR A1 - Stichel, T. A1 - Raths, M. A1 - Laumer, Tobias A1 - Roth, S. T1 - Multi-Material Deposition of Polymer Powders with Vibrating Nozzles for a New Approach of Laser Sintering JF - Journal of Laser Micro/Nanoengineering (JLMN) N2 - Conventional Selective Laser Sintering of polymers is restricted to the processing of single materials. The fabrication of components consisting of different material regions is a challenge which cannot be realized by standard coating devices basing on blades or rollers. Thus, advanced coating and deposition techniques are needed which enable the precise and reliable control over very small powder quantities in order to prepare arbitrary powder patterns with high accuracy and repeatability. In this report, the delivery of polymer powder by vibrating nozzles inside laser sintering machines is investigated. Therefore, a steel nozzle attached to a piezo actuator is integrated into a machine, whereas the nozzle itself features internal channels which allow the precise control over the powder temperature using heat transfer oil. The setup is used to study the influence of different system configurations on the powder deposition characteristics as resolution and layer surface roughness. The results show that temperature influences the mass flow depending on the material used and that a precise deposition of powder pattern with microscale resolution is possible with optimized parameters. Finally, the multimaterial powder pattern is fused by a new illumination strategy of laser sintering which is called Simultaneous Intensity-Selective Laser Sintering in order to demonstrate the potential of this new approach. Y1 - 2018 U6 - https://doi.org/10.2961/jlmn.2018.02.0002 VL - 13 IS - 2 SP - 55 EP - 62 PB - JLPS-Japan Laser Processing Society ER - TY - JOUR A1 - Heinl, M. A1 - Laumer, Tobias A1 - Bayer, F. A1 - Hausotte, Tino T1 - Temperature-dependent optical material properties of polymer powders regarding in-situ measurement techniques in additive manufacturing JF - Polymer Testing N2 - Due to the growing number of applications for Additive Manufacturing (AM), an increasing need for enhanced quality control methods exists. Here optical measurement techniques are often used for in-situ monitoring in AM. There is a great potential to standardize and improve applications of optical measurement devices in accordance to the increasing requirements of measuring tasks. Beside the optical material qualifications, especially process-oriented changes in optical effects are of great relevance for in-situ evaluations. The optical modifications may be attributed to aggregate specific phase transitions coming along with variable emitted wavelengths. A measuring setup with two integrations spheres and a heated process chamber have been developed to analyze the optical interactions of laser radiation and visual illumination with the powder. The process oriented analysis for selective laser sintering lead to improved operating conditions in the field of in-situ measurements in combination with an accurate evaluation of the absorption ratio of the examined powder. Y1 - 2018 U6 - https://doi.org/10.1016/j.polymertesting.2018.09.016 VL - 71 IS - October SP - 378 EP - 383 PB - Elsevier ER - TY - JOUR A1 - Stichel, Thomas A1 - Geißler, Bastian A1 - Jander, Julius A1 - Laumer, Tobias A1 - Frick, Thomas A1 - Roth, Stephan T1 - Electrophotographic multi-material powder deposition for additive manufacturing JF - Journal of Laser Applications N2 - In this paper, the use of electrophotographic polymer powder transfer for the preparation of multi-material layers is discussed with respect to the application in powder bed-based additive manufacturing technologies as selective laser sintering (SLS). Therefore, the challenges of this task are considered verifying the critical process steps in order to develop a concept for an electrophotograhic laser sintering machine. On that basis, an experimental setup with a two-chamber design is realized which enables the investigation of the electrophotographic powder transfer at typical process conditions of SLS. Using this setup, transfer tests of polypropylene powder patterns were performed and qualitatively analyzed by photographic imaging. The results confirm the high potential of the application of electrophotography for multi-material powder deposition and show how a residual electrophotographic powder deposition can be achieved in general, which is independent from the already produced part height, in order to build up three-dimensional multi-material components. Y1 - 2018 U6 - https://doi.org/10.2351/1.5040619 VL - 30 IS - 3 PB - AIP Publishing ER - TY - JOUR A1 - Osmanlic, Fuad A1 - Wudy, Katrin A1 - Laumer, Tobias A1 - Schmidt, Michael A1 - Drummer, Dietmar A1 - Körner, Carolin T1 - Modeling of Laser Beam Absorption in a Polymer Powder Bed JF - Polymers N2 - In order to understand the absorption characteristic, a ray trace model is developed by taking into account the reflection, absorption and refraction. The ray paths are resolved on a sub-powder grid. For validation, the simulation results are compared to analytic solutions of the irradiation of the laser beam onto a plain surface. In addition, the absorptance, reflectance and transmittance of PA12 powder layers measured by an integration sphere setup are compared with the numerical results of our model. It is shown that the effective penetration depth can be lower than the penetration depth in bulk material for polymer powders and, therefore, can increase the energy density at the powder bed surface. The implications for modeling of the selective laser sintering (SLS) process and the processability of fine powder distributions and high powder bed densities are discussed. KW - additive manufacturing KW - laser absorption KW - PA12 KW - polyamide 12 KW - powder bed Y1 - 2018 U6 - https://doi.org/10.3390/polym10070784 VL - 10 IS - 7 SP - 1 EP - 11 PB - MDPI ER - TY - JOUR A1 - Stichel, Thomas A1 - Frick, Thomas A1 - Laumer, Tobias A1 - Tenner, Felix A1 - Hausotte, Tino A1 - Merklein, Marion A1 - Schmidt, Michael T1 - A Round Robin study for Selective Laser Sintering of polyamide 12: Microstructural origin of the mechanical properties JF - Optics & Laser Technology N2 - The mechanical and microstructural investigation of polymer parts (polyamide 12) fabricated by Selective Laser Sintering as part of a Round Robin initiative is presented. The paper focuses on the microstructural analysis of the Round Robin samples and their evaluation regarding their effect on mechanical properties with respect to each other. Therefore optical microscopy on microtomed samples, X-ray computed tomography and Differential Scanning Calorimetry is used to determine the morphology of residual particle cores and of internal pores. Y1 - 2017 U6 - https://doi.org/10.1016/j.optlastec.2016.09.042 VL - 89 SP - 31 EP - 40 PB - Elsevier ER - TY - JOUR A1 - Stichel, Thomas A1 - Laumer, Tobias A1 - Schmidt, Michael T1 - Simulation des (quasi-)simultanen Laserstrahlschmelzens zur Herstellung von Multi-Material-Bauteilen aus Polymeren JF - Rapid.Tech + FabCon 3.D - International Trade Show + Conference for Additive Manufacturing Y1 - 2018 U6 - https://doi.org/10.3139/9783446458123.020 SP - 312 EP - 329 PB - Hanser ER - TY - CHAP A1 - Schmidt, Jochen A1 - Fanselow, Stephanie A1 - Wirth, Karl-Ernst A1 - Peukert, Wolfgang A1 - Hiller, Saskia A1 - Laumer, Tobias A1 - Schmidt, Michael ED - Witt, Gerd ED - Wegner, Andreas ED - Sehrt, Jan T1 - Herstellung von Polyolefinstrahlschmelzmaterialien mittels Schmelzeemulgieren zum Einsatz in der additiven Fertigung T2 - Neue Entwicklungen in der Additiven Fertigung N2 - Im Rahmen dieses Beitrags wird das Schmelzeemulgieren als Verfahren zur Herstel-lung von Polymermikropartikeln vorgestellt. In diesem Prozess wird zunächst ein Polymergranulat in einer kontinuierlichen Phase in Gegenwart geeigneter Additive in einem Rührbehälter aufgeschmolzen, die Rohemulsion in einer Rotor-Stator-Einheit feinemulgiert und anschließend zu einer Suspension abgekühlt. Der Einfluss von Prozessparametern und Systemzusam-mensetzung auf das Emulgierergebnis wird diskutiert und die Anwendbarkeit des Verfahrens für polymere Mikropartikeln anhand von Polypropylen (PP) und Polyethylen (PE-HD) dargestellt. Die erhaltenen Suspensionen werden zur Überführung in Pulverform sprühgetrocknet und die Fließeigenschaften des Pulvers analysiert. Durch trockenes Beschichten mit pyrogener Kieselsäure kann die Fließfähigkeit der erhaltenen Partikeln weiter verbessert werden. Das Verfahren bietet somit einen neuen Zugang zur Herstellung neuer Ausgangsmaterialien für die Additive Fertigung. Y1 - 2015 SN - 978-3-662-48472-2 U6 - https://doi.org/10.1007/978-3-662-48473-9_2 SP - 13 EP - 23 PB - Springer CY - Berlin, Heidelberg ER - TY - BOOK A1 - Saßmannshausen, Sean Patrick T1 - Entrepreneurship-Forschung – Fach oder Modetrend? Evolutorisch-wissenschaftssystemtheoretische und bibliometrisch-empirische Analysen N2 - „Entrepreneurship“ hat während der letzten Jahrzehnte in Forschung, Praxis und Politik an Bedeutung gewonnen. Zugleich sieht sich das junge Fach aber auch Angriffen auf seine Eigenständigkeit ausgesetzt: Zählen nicht beispielsweise die Gestaltung von Geschäftsmodellen zum strategischen Management und das Durchsetzen von Neuem zum Innovationsmanagement? Das vorliegende Buch untersucht daher die Eigenständigkeit des Fachs Entrepreneurship aus wissenschafts(system)theoretischer und empirischer Perspektive. Dabei wird gezeigt, wie sich die Entrepreneurship-Forschung von einem – nach Feyerabend mit den Worten „anything goes!“ zu beschreibenden – frühen Zustand hin zu einem reiferen Stadium entwickelt hat, geprägt durch die Etablierung von originären „harten Kernen“ im Sinne Lakatos. Von einer paradigmatischen Normalwissenschaft nach Kuhn ist man jedoch noch weit entfernt, und dies ist – so zeigen die Ausführungen – vielleicht auch gut. Alternativ dazu schlägt der Autor einen universaldarwinistisch-evolutorischen Bezugsrahmen vor, innerhalb dessen die vielen Ansätze, Theorien und Erkenntnisse zu einem holistischen Ganzen gefügt werden können. Im empirischen Teil der Untersuchung wird mittels bibliometrischer Methoden, Hypothesentests und Modellen erstmalig das „invisible College“ einer fachlich eigenständigen Entrepreneurship-Forschung sichtbar gemacht. Anhand einer Co-Zitationsanalyse wird dabei auch der tatsächliche „Impact“ von Aufsätzen, Autoren sowie Zeitschriften, Sammelbänden und anderen Publikationsformen berechnet. So kann unter anderem zur Dominanz von Zeitschriftenpublikationen bei der akademischen Leistungsmessung empirisch fundiert Stellung genommen werden. Vergleicht man die empirischen Befunde schließlich mit Luhmanns Wissenschaftssystemtheorie, dann erscheint das Fach Entrepreneurship geradezu als ein ideales Beispiel zu dieser Theorie der Genese von Wissenschaftssystemen. Y1 - 2012 SN - 978-3-8441-0165-2 N1 - Zugleich: Dissertation Bergische Universität Wuppertal PB - Eul CY - Köln ER - TY - CHAP A1 - Saßmannshausen, Sean Patrick ED - Goldschmidt, Nils ED - Nutzinger, Hans G. T1 - Der homo oeconomicus im Spiegel kognitions- und biopsychologischer Erkenntnisse T2 - Vom homo oeconomicus zum homo culturalis: Handlung und Verhalten in der Ökonomie N2 - Der vorliegende Beitrag beschäftigt sich mit der Frage, ob das Modellkonstrukt des homo oeconomicus im Lichte moderner kognitions- bzw. biopsychologischer Erkenntnisse noch als Abbild des ökonomisch handelnden Menschen an-gesehen werden kann oder ob es als Zerrbild überwunden werden sollte. Das Modell des homo oeconomicus erhebt nicht den Anspruch, Menschen in all ihren Facetten und individuellen Ausprägungen widerzuspiegeln. Es dient lediglich als vereinfachendes Konstrukt, welches das Handeln ökonomischer Akteure mathematisch erklärbar sowie vorhersagbar machen soll. Den homogen konstruierten Individuen billigt es lediglich eine Rolle als Maß des Nutzens zu, also als Bestimmungsgrund für Präferenzen, wobei allerdings individuelle Unterschiede und Besonderheiten durch einen atomisierten Kollektivismus ausgeblendet werden. Es stellt sich die Frage, ob mit Hilfe eines solchen Konstrukts noch die realen ökonomischen Prozesse in modernen, freiheitlich-individualistisch organisierten Gesellschaften befriedigend erklärt werden können. Wenn nicht, so wäre zu prüfen, ob das Konstrukt durch modellkonforme Anpassungen derart variiert werden kann, dass es in verbesserter Ausgestaltung beibehalten werden kann, oder ob die Kritik am homo oeconomicus auf die Fundamente der theoretischen Grundlagen und Kernsätze des Konstrukts zielt. In diesem Fall könnten selbst immer neue Hilfshypothesen und variierende Annahmen eines Protective Belts im Sinne Thomas Kuhns (1977) nicht zur Rettung des homo oeconomicus beitragen. Zu diesen Fragen werden in vier Schritten Antworten gesucht: Zunächst erfolgt eine knappe Zusammenfassung zu den gegenwärtigen Erkenntnissen der Biopsychologie und der Kognitionswissenschaften. Im nächsten Schritt wird auf-gezeigt, warum sich das Modell des homo oeconomicus so erfolgreich durch-setzen konnte. Anschließend wird diskutiert, ob der homo oeconomicus den wesentlichen Fähigkeiten des ökonomisch agierenden Menschen gerecht wird. Dabei wird herauszuarbeiten sein, welche Schwächen diesem Modell vorzuwerfen sind, wenn Ökonomik erklärungsstarke Theorien anbieten möchte. Zuletzt soll auf Basis der vorgetragenen Kritik eine Alternative skizziert werden. Y1 - 2009 SN - 3-643-10354-9 SP - 61 EP - 86 PB - Lit CY - Berlin ER - TY - JOUR A1 - Saßmannshausen, Sean Patrick A1 - Volkmann, Christine T1 - "Gazellen" - schnell wachsende Jungunternehmen: Definitionen, Forschungsrichtungen und Implikationen JF - ZfKE - Zeitschrift für KMU und Entrepreneurship N2 - High growth new ventures are particularly relevant for the positive effects associated with entrepreneurship. However, there is no well-established definition of the term "high growth new venture" (or, in short "gazelle"). This article will introduce the most common definitions. We will then critically analyze those definitions and develop suggestions for their improvement. We identify four major themes of "gazelles" research: (1) phenomenological approaches, (2) economic impact, (3) environmental and institutional preconditions (external factors of success), and (4) foundation and growth management (internal factors of success). An overview of the literature is provided. We end with addressing the improvement of definitions, sampling issues in empirical research, and future research challenges. N2 - Schnell wachsende Jungunternehmen – bildlich als “Gazellen“ bezeichnet – sind von großer Bedeutung für die positiven ökonomischen Effekte, die man mit Entrepreneurship verbindet. Dennoch ist der Begriff der "Gazelle" in der Literatur noch nicht annähernd einheitlich definiert. Dieser Beitrag macht mit den wesentlichen Begriffsdefinitionen vertraut und unterzieht diese einer kritischen Würdigung. Es werden vier grundsätzliche Forschungsrichtungen identifiziert, die sich um das Thema “Gazellen“ etabliert haben: (1) phänomenologische Beschreibungen, (2) volkswirtschaftliche Wirkungen, (3) Rahmenbedingungen ihrer Entstehung (externe Erfolgsfaktoren), sowie (4) Gründungs- und Wachstumsmanagement (interne Erfolgsfaktoren). Ein Überblick über die Literatur soll einen vertiefenden Einstieg in die Thematik erleichtern. Abschließend werden definitorische Forderungen, Probleme bei der Auswahl von Stichproben und Empfehlungen für die zukünftige Erforschung von schnell wachsenden Jungunternehmen formuliert. Y1 - 2012 U6 - https://doi.org/10.3790/zfke.60.2.163 SN - 1865-5114 SN - 1860-4633 VL - 60 IS - 2 SP - 163 EP - 177 PB - Duncker & Humblot CY - Berlin ER - TY - BOOK A1 - Saßmannshausen, Sean Patrick T1 - Carl Zeiss – Wachstum in schwieriger Zeit BT - Ein Beitrag zur Unternehmensgeschichte von 1914 – 1930 N2 - In dem Buch werden detailliert Wachstumsprozesse der Firma Carl Zeiss und verbundener Unternehmen nachgezeichnet. Die wechselvolle Zeit vom Ersten Weltkrieg bis zur Weltwirtschaftskrise stellte die Unternehmensführung vor immer neue Herausforderungen. Der verlorene Krieg, Enteignungen im Ausland, drohende Hungersnöte, rasende Inflation, Währungsreform, Kapitalknappheit und Rezession: wie es gelang, trotz ständiger Unsicherheit bezüglich der wirtschaftlichen und politischen Rahmenbedingungen einen Wachstumsprozess zu realisieren, der geradezu atemberaubend verlief, wird anhand der Auswertung von Originalquellen aus dem Betriebsarchiv Carl Zeiss aufgezeigt. Dabei werden auch neue Erkenntnisse über die Entwicklung von Konkurrenzbetrieben und über die Geschehnisse auf den Auslandsmärkten zu Tage gefördert. So wird beispielsweise aufgezeigt, welche Anstrengungen die Kriegsgegner des Deutschen Reichs von 1914 bis 1919 unternahmen, um im Bereich der optischen Industrie die dominante Stellung deutscher Produzenten zu überwinden. Deshalb ist das Werk mehr als nur ein wesentlicher Beitrag zur Unternehmensgeschichte von Carl Zeiss, es gibt Einblicke in die Geschichte der gesamten optischen und feinmechanischen Industrie. Entsprechend den Anforderungen an eine moderne, theoriegeleitete Unternehmensgeschichte werden Entscheidungen des Managements und evolutorische Entwicklungsverläufe mit den aktuellen Erkenntnissen der Wirtschaftswissenschaften in Zusammenhang gebracht. So ist das Buch nicht nur für den historisch interessierten Leser eine spannende Lektüre, sondern es liefert auch für den Wirtschaftstheoretiker wichtiges empirisches Material, genauso, wie es für den Manager wertvolle, praktische Tipps und Hinweise liefert. Schlagworte Carl Zeiss, Unternehmensgeschichte, Optische und Feinmechanische Industrie, Weimarer Republik, Weltwirtschaftskrise, Wirtschaftsgeschichte, Rüstungsgüter, Inflation, Geschichtswissenschaften Y1 - 2003 SN - 978-3-8300-0973-3 N1 - Zugl.: Jena, Univ., Diplomarbeit, 1998 PB - Verlag Dr. Kovač CY - Hamburg ER - TY - CHAP A1 - Saßmannshausen, Sean Patrick T1 - 99 Entrepreneurship Journals : A Comparative Empirical Investigation of Rankings, Impact, and H/HC-Index T2 - Schumpeter Discussion Papers N2 - This article takes stock of 99 journals dedicated to the field of entrepreneurship research and examines their evaluations and impact. It compares several journal quality assessments, the Australian ERA 2010, ABDC 2010 and UQ 2011 lists, with other international rankings and with highly regarded impact measurements. In a following section, the H-Index and the HC-Index for journals are introduced. The H-Indices are Google Scholar based impact measurements which can be easily executed by anyone. The results for the entrepreneurship journals H-Indices are compared with other impact factors and with journal rankings from Australia and elsewhere. Results reveal that rankings are incomplete in regard to entrepreneurship journals and that many rankings are inconsistent when compared to impact measurements. This holds true even for the ERA and the ABDC 2010 lists, even though these are among the most appropriate lists. KW - entrepreneurship journals KW - evaluation of journals KW - HC-Index KW - H-Index KW - impact factors KW - journal rankings KW - journal ratings KW - pimpact measurements Y1 - 2012 UR - https://www.researchgate.net/publication/241753542_99_Entrepreneurship_Journals_A_Comparative_Empirical_Investigation_of_Rankings_Impact_and_HHC-Index SN - 1867-5352 IS - 002 PB - Schumpeter School of Business and Economics, Wuppertal University ER - TY - JOUR A1 - Saßmannshausen, Sean Patrick A1 - Volkmann, Christine T1 - A Bibliometric Based Review on Social Entrepreneurship and its Establishment as a Field of Research JF - Schumpeter Discussion Papers N2 - This paper provides an overview on the state of art of research on social entrepreneurship and the establishment of this topic in the academic world. It uses scientometric methods, especially bibliometrics, in measuring the maturity of social entrepreneurship research. The empirical part reveals the increasing number of literature, the institutionalization of social entrepreneurship in seven dimensions, the emergence of thematic clusters, and methodological issue. The paper makes concrete suggestions on how to overcome methodological challenges at the boarder of advanced qualitative and early quantitative research designs. Using Harzing’s “Publish or Perish” software this article furthermore provides a ranking of the 20 most cited academic contributions in social entrepreneurship. Surprisingly, almost half of the most cited papers have not been published in journals but in books, rising doubts on the current (over-)rating of journal publications. KW - academic institutionalization KW - bibliometric study KW - citations, review KW - development of empirical measurement scales KW - organizational establishment KW - Social entrepreneurship Y1 - 2013 UR - https://d-nb.info/1037092589/34 PB - Schumpeter School of Business and Economics CY - Wuppertal ER - TY - JOUR A1 - Saßmannshausen, Sean Patrick A1 - Maritz, Alex A1 - Frederick, Howard A1 - Jones, Colin A1 - Katzenstein, Liora T1 - Entrepreneurship Education and SME Policies JF - Journal of Asia Entrepreneurship and Sustainability Y1 - 2013 UR - http://www.asiaentrepreneurshipjournal.com/JAESMay2013SpecEd.pdf VL - 9 IS - 1 SP - 4 EP - 13 PB - RossiSmith Academic ER - TY - CHAP A1 - Saßmannshausen, Sean Patrick A1 - Volkmann, Christine T1 - The Emergence of Academic Entrepreneurship at Wuppertal University – A Case Study T2 - Scientific Entrepreneurship : Reflections on the Success of 10 years EXIST : Festschrift for Norbert Szyperski on the occasion of his 80th birthday, September 27, 2011 N2 - The University of Wuppertal is among the relatively small group of universities which were continuously supported by the EXIST program through all three stages of EXIST I, II, and III. In this article we want to outline the development of “BIZEPS” from 1999 to 2003/04. A subsequent article in this volume will reflect on the development from 2005 to 2011. The acronym BIZEPS has always remained part of the names of follow-up projects and sustainable structures which persisted after the end of government financing. At the end of February 2011, the latest EXIST-project in Wuppertal, BIZEPS gazelles, has been concluded formally; but then again it did not really come to an end, since its core functions can now be continued through internal funding. Sustainable structural changes have been established, and the lessons learned as well as the spirit of BIZEPS gazelles are still present. Now, in summer 2011, Wuppertal is preparing for its second application for EXIST IV. EXIST IV would be the concluding highlight to the university’s long-lasting commitment to entrepreneurship by crafting and – more important – incorporating an entrepreneurial strategy not only for parts of the university, but rather for its entire body. But how did Wuppertal University get to this point? In this article we would like to describe the history of entrepreneurship at the University of Wuppertal. This reflection in form of a case study might offer insights and lessons to be learned that are instructive to other universities which are about to start or to advance their entrepreneurial ecosystem (for a similar approach in describing the development of entrepreneurship within educational institutions see e.g. Cruikshank 2005; in addition see e.g. Wright et al. (ed.) (2007), Isenberg (2010), and Fetters (2010)). Y1 - 2011 SN - 978-3-8441-0078-5 SP - 19 EP - 40 PB - Eul ER - TY - CHAP A1 - Saßmannshausen, Sean Patrick A1 - Blumberg, Boris F. A1 - Hofmann, Monica T1 - THE ETHICS OF EUROPEAN ENTREPRENEURS: 20 NATIONS CROSS-COMPARATIVE EMPIRICAL ANALYSES OF ATTITUDES AND BEHAVIOR OF ENTREPRENEURS, MANAGERS AND THE REMAINING POPULATION T2 - AGSE International Entrepreneurship Research Exchang N2 - This paper has three main objectives. First, it attempts to develop testable, theoretical sounded hypotheses explaining ethics of entrepreneurs. Therefore it builds upon studies exploring potential drivers for ethical attitudes and behavior. Second, these hypotheses are tested with a large and representative cross national data set, i.e. data from the European Social Survey (ESS). Third, our study is two-level comparative: The sample includes entrepreneurs, managers of sme's and large incorporations, and a representative number of populations excluding the two groups mentioned before. By this, we can compare ethics in attitudes and behavior between those three groups of profession as well as we can test for differences in ethical attitudes and behavior across 20 European countries. Our results show that many theoretical hypotheses do not meet empirical proof and that entrepreneurs seem to be significantly less ethical than the other groups. Y1 - 2008 UR - https://www.researchgate.net/publication/239279253_THE_ETHICS_OF_EUROPEAN_ENTREPRENEURS_20_NATIONS_CROSS-COMPARATIVE_EMPIRICAL_ANALYSES_OF_ATTITUDES_AND_BEHAVIOR_OF_ENTREPRENEURS_MANAGERS_AND_THE_REMAINING_POPULATION SP - 585 EP - 599 ER - TY - CHAP A1 - Saßmannshausen, Sean Patrick T1 - Hayek’s Theory of Group Selection and Entrepreneurial Networks T2 - Frontiers of Entrepreneurship Research N2 - The network success hypothesis predicts a positive relation between the networking activities of entrepreneurs and their economic success. Surprisingly, at first glance, empirical research on entrepreneurial networks and clusters in more than 30 reviewed papers offers quiet varying answers to the question if and why networks or clusters influence the development of start-ups positively. The dissimilar (or even contrary) empirical results might can be explained by differences in the theoretical models and the methods of measurement. An evolutionary model of the interplay between single entrepreneurs and their networks will be developed. Then, following and testing HAYEK’S (1971, 1979, 1988) institutional theory of group selection, it is argued that entrepreneurial networks which are build on a shared cognitive basis will create efficient rules of conduct with less effort, resulting in a capable institutional framework and thus being comparatively fitter systems. Y1 - 2006 PB - College CY - Babson Park, Mass. ER - TY - CHAP A1 - Saßmannshausen, Sean Patrick A1 - Volkmann, Christine ED - Kortzfleisch, Harald F. O. T1 - Growth and Sustainability of Academic Entrepreneurship at Wuppertal University : A Case Study Continues T2 - SScientific entrepreneurship : reflections on success of 10 Years EXIST ; Festschrift for Norbert Szyperski on the occasion of his 80th birthday, September 27, 2011 N2 - In our first contribution to this volume we have lined out how academic entrepreneurship emerged. In this second article we would like to describe its further evolution. The development is structured by two main phases according to the impulses generated by EXIST II and EXIST III. In a conclusion we will provide a representative group of examples for start-ups that had been founded through all three stages of the EXIST program. Some thoughts on further development of academic entrepreneurship at Wuppertal University will end our journey through the development of Wuppertal’s EXIST initiative BIZEPS. Y1 - 2011 SN - 978-3-8441-0078-5 PB - Eul CY - Lohmar [u.a.] ER - TY - CHAP A1 - Gladbach, Stefan A1 - Saßmannshausen, Sean Patrick T1 - Entrepreneurship Education between Theory and Practice: Case Study Based Teaching as a Method of Creating Future Entrepreneurs T2 - Proceedings of the 8th AGSE International Entrepreneurship Research Exchange, Melbourne, Australia, 01/02/2011 - 04/02/2011 Y1 - 2011 SP - 1121 EP - 1130 ER - TY - CHAP A1 - Saßmannshausen, Sean Patrick A1 - Fuchs, Barbara A1 - Kautonen, Teemu T1 - Unternehmen erfolgreich starten T2 - Entrepreneurship - Theorie und Fallstudien zu Gründungs-, Wachstums- und KMU-Management Y1 - 2008 SN - 3-7089-0258-0 U6 - https://doi.org/10.24989/9783990302552 SP - 9 EP - 25 PB - Facultas ER - TY - CHAP A1 - Saßmannshausen, Sean Patrick T1 - Fallstudien in der Gründungslehre: Ein Leitfaden zur Bearbeitung mit praktischen Beispielen T2 - Gründerfernstudium - Professionalisierungsstudium "Start-up Counselling" Y1 - 2003 PB - Selbstverlag der FernUniversität Hagen (Fachbereich Wirtschaftswissenschaft) CY - Hagen ER - TY - CHAP A1 - Kuhn, Birte A1 - Saßmannshausen, Sean Patrick A1 - Zollin, Roxanne T1 - "Entrepreneurial Management" as a Strategic Choice in Firm Behavior T2 - Proceedings of the High technology Small Firms Conference Y1 - 2010 ER - TY - CHAP A1 - Koch, Lambert T. A1 - Kuhn, Wolfgang A1 - Saßmannshausen, Sean Patrick T1 - Instrumente der Gründungsförderung T2 - Gründerfernstudium Y1 - 2001 PB - FernUniversität Hagen CY - Hagen ER - TY - CHAP A1 - Gladbach, Stefan A1 - Saßmannshausen, Sean Patrick T1 - Zielgruppenspezifische Methoden in Entrepreneurship T2 - Methoden und Qualität in Gründungslehre, Gründungscoaching und Gründungsberatung : Interventionen und Innovationen N2 - Seitdem in den 1990er Jahren eine neue Förderkultur für Unternehmensgründungen in Deutschland entstand legt auch die Wissenschaft einen Fokus auf die Ausbildung von Unter-nehmensgründern, also auf die Entrepreneurship Education. Diese umfasst alle didaktischen Anstrengungen, die jeweilige Zielgruppe für eine potenzielle selbstständige Tätigkeit zu sen-sibilisieren und zielt auf den Erwerb spezifischer Kenntnisse und Fähigkeiten, die in grün-dungsrelevanten Handlungs- und Entscheidungsfeldern ausgerichtet sind (Uebelacker 2005). Doch welche Methodiken eignen sich im Besonderen dazu, diese umfangreichen und kom-plexen Kenntnisse und Fähigkeiten zu vermitteln? Nach Meinung der Verfasser ist die Fall-studien-Methodik besonders dazu geeignet, diese schwierige Aufgabe zu bewerkstelligen. Die Bezeichnung als „besonders dazu geeignet“ impliziert dabei keinesfalls die Behauptung einer alleinigen oder ausschließlichen Eignung. Die Verfasser befürworten vielmehr einen Methodenpluralismus in der Lehre, fokussieren im vorliegenden Beitrag aber auf Fallstudien, da diese Methode in Deutschland eher unterbewertet wird. Y1 - 2011 SP - 87 EP - 98 PB - Eul CY - Köln ER - TY - GEN A1 - Singh, Max Diamond T1 - European Union MDRs impact on device manufacturers: Reprocessing of surgical invasive devices, critical timeliness and technical documentation requirements under MDR BT - [Vortrag gehalten am 26.03.2019] T2 - The validation of sterile medical devices: sterilization, packaging, biocompatibility, toxicology and reprocessing, Amsterdam, 26.03. - 28.03.2019 [Veranstalter: Nelson Labs ; Sterigenics] Y1 - 2019 ER - TY - GEN A1 - Singh, Max Diamond T1 - Challenges to innovate in the medical device industry under the light of the new EU MDR : a notified body perspective BT - Keynote Presentation. - Amsterdam, 21.-22.11.2019 // [Veranstalter: Samtek Group] T2 - Intelligent medical devices - the next disruptor in healthcare ; challenges and oppoertunieties: technical, clinical, regulatory and health economics/market access Y1 - 2019 ER - TY - GEN A1 - Singh, Max Diamond T1 - Zusätzliche Anforderungen an Produktdaten und technische Dokumentation durch die MDR T2 - Medizintechnik Kongress 2018: Effizienz in der Medizinprodukteentwicklung vor dem Hintergrund von MDR und IVDR ; Frankfurt am Main, 08.11.2018, [Veranstalter: Velten Consulting & ILC Consulting] Y1 - 2018 ER - TY - GEN A1 - Singh, Max Diamond T1 - EU-MDR from a Notified Body Perspective - aktuelle Situation hinsichtlich der Anforderungen zum Lieferantenmanagement BT - Tuttlingen, Technology Mountains / Medical Mountains, 2019 Y1 - 2019 ER - TY - GEN A1 - Singh, Max Diamond T1 - EU Medical Device Regulation: Top Challenges of Orthopedic Manufacturers T2 - OMTEC 2019 : 15th Annual Orthopedic Manufacturing & Technology Exposition and Conference, Chicago, 11.6.2019 Y1 - 2019 ER - TY - CHAP A1 - Saßmannshausen, Sean Patrick T1 - Wesen und Wege der Selbständigkeit T2 - Gründungsmanagement Y1 - 2001 U6 - https://doi.org/10.1524/9783486700800.121 SP - 121 EP - 135 PB - Oldenbourg CY - München ER - TY - CHAP A1 - Koch, Lambert T. A1 - Saßmannshausen, Sean Patrick A1 - Kuhn, Wolfgang T1 - Ziele der Gründungsförderung T2 - Gründerfernstudium Y1 - 2001 PB - FernUniversität Hagen CY - Hagen ER - TY - GEN A1 - Singh, Max Diamond T1 - Conformity Assessment Procedure MDR BT - [Vortrag gehalten am 24.02.2020] T2 - MDR Training: Person Responsible for Regulatory Compliance Course, 24.-25.02.2020, Tel Aviv, Obelis Academy Y1 - 2020 ER - TY - GEN A1 - Singh, Max Diamond T1 - Managing Innovation from the Notified Body Perspective - Understanding the 3 C’s of EU Regulations to Ensure Product Compliance: Changes, Challenges and Contributions T2 - 3rd annual european medical device and diagnostic product development and management meeting, 12-13 February 2019, Brussels Y1 - 2019 ER - TY - GEN A1 - Singh, Max Diamond T1 - Notified body feedback: PSUR Forms. Post Market Surveillance & Vigilance BT - [Vortrag gehalten am 24.06.2020] T2 - MedTech Summit 2020: EU MDR & IVDR: the end is in sight, Dublin/virtual, 20.-26.06.2020 Y1 - 2020 ER - TY - GEN A1 - Singh, Max Diamond T1 - MDR - Die neuen rechtlichen Bedingungen für Händler und Hersteller: aus der Sicht einer benannten Stelle T2 - MEGRA Jahrestagung. - Wien, 18.05.2020 [Veranstalter: Mitteleuropäische Gesellschaft für Regulatory Affairs] Y1 - 2020 ER - TY - GEN A1 - Singh, Max Diamond T1 - Innovation challenges for orthopedic device manufacturers under the new EU MDR BT - a notified body perspective T2 - ORS (Orthopaedic Research Society) Annual Meeting. - Phoenix, Arizona, 08. - 11.02.2020 Y1 - 2020 ER - TY - GEN A1 - Singh, Max Diamond T1 - KARL STORZ Navigation Panel Unit - Navigation for ENT surgery T2 - FESS 2010 : International Workshop on FESS ; Lectures & Live Surgery. - Royal Pearl Hospital, Tiruchirappalli (Indien), 10.-11.04.2010 Y1 - 2010 ER - TY - GEN A1 - Singh, Max Diamond T1 - Medical Device Regulation BT - Kurzer Überblick zur Zulassung von Medizinprodukten T2 - Forum MedTech Pharma: Start-ups in der Medizintechnik: Besonderheiten und Fallbeispiele, München, 17.7.2019 Y1 - 2019 ER - TY - GEN A1 - Singh, Max Diamond T1 - Market Access for Devices under MDD and MDR: Obligations for Manufacturers T2 - OSMA - Orthopedic Surgical Manufacturers Association, Winter Educational Program - virtual Y1 - 2021 ER - TY - GEN A1 - Singh, Max Diamond T1 - Innovationsmanagement BT - Sitzung des Ulmer Arbeitskreises Innovationsmanagement, Ulm, 03.11.2011 Y1 - 2011 ER - TY - GEN A1 - Singh, Max Diamond T1 - General Overview of the Medical Device Regulation T2 - MDR-Roadshow - TÜV SÜD MHS, India Y1 - 2020 ER - TY - GEN A1 - Singh, Max Diamond T1 - Stakeholder view on Post Market Surveillance under the EU MDR: Timelines, Compliance and Requirements ; Post Market Surveillance & Vigilance BT - [Vortrag gehalten am: 23.6.2020] T2 - MedTech summit 2020: EU MDR & IVDR: the end ist in sight, 22.-26.06.2020, Dublin/virtual Y1 - 2020 ER - TY - GEN A1 - Singh, Max Diamond T1 - Quality in Medical Device Innovation for Start-ups, SME, and large enterprises through the new Medical Device Regulation T2 - 3rd European QA Conference, Dublin, 06. - 08.11.2019 Y1 - 2019 ER - TY - GEN A1 - Singh, Max Diamond T1 - Technical Documentation MDR / IVDR, including the Declaration of Conformity BT - [Vortrag gehalten am 24.02.2020] T2 - MDR Training: Person Responsible for Regulatory Compliance, 24.-25.02.2020, Tel Aviv, Obelis Academy Y1 - 2020 ER - TY - GEN A1 - Singh, Max Diamond T1 - Notified Body Viewpoint : Preparing for MDR/IVDR T2 - MDR/IVDR - Status Report from Stakeholders. Where are we now in November 2018? - Bern, 22.11.2018 - [Veranstalter: RAPS : Regulatory Affairs Professionals Society] Y1 - 2018 ER - TY - GEN A1 - Singh, Max Diamond T1 - Reclassification of Orthopedic Devices per the Medical Device Regulation T2 - OSMA Winter Educational Program, St. Petersburg/USA, 2019. - [Veranstalter: Orthopedic Surgical Manufacturers Association (OSMA)] Y1 - 2019 ER - TY - GEN A1 - Singh, Max Diamond T1 - Strategies to Navigate to the EU MDR and Clinical Requirements T2 - Regulatory Affairs Professionals Society (RAPS): Session 1 - Tampa, Florida 2019 Y1 - 2019 ER - TY - GEN A1 - Singh, Max Diamond T1 - Herausforderungen der Medizinprodukteindustrie bei der Internationalisierung T2 - Studienwoche an der HNU (Hochschule Neu-Ulm) 2020 Y1 - 2020 ER - TY - GEN A1 - Singh, Max Diamond T1 - Technical Aspects for Navigated Sinus Surgery T2 - 4th Workshop on Endoscopic Surgery of the Maxillary Sinus and Navigation, Tübingen University Hospital, 2009 Y1 - 2009 ER - TY - GEN A1 - Singh, Max Diamond T1 - Overview of the Medical Device Regulation (MDR) BT - MDR-Roadshow TÜV SÜD MHS, San Diego & Minneapolis, 2018 Y1 - 2018 ER - TY - JOUR A1 - Olsson, Nilla A1 - Abdul Wahid, Fatmawati A1 - Nilsson, Lars-Olof A1 - Thiel, Charlotte A1 - Wong, Hong S. A1 - Baroghel-Bouny, Véronique T1 - Wick action in mature mortars with binary cements containing slag or silica fume - The relation between chloride and moisture transport properties under non-saturated conditions JF - Cement and Concrete Research N2 - Moisture and ionic transport under non-saturated condition is an important, but poorly understood transport phenomena particularly for mature systems containing supplementary cementitious materials. This paper investigates the moisture and chloride profiles of 3-year old mortars containing Portland cement (OPC), slag and silica fume (SF) after long-term (30–48 months) wick action exposure in 1.09 M NaCl solution. Moisture profiles were measured with ¹H NMR relaxometry and chloride profiles with microXRF. The measured profiles were discussed in relation to moisture dependent material properties such as chloride diffusion coefficients, moisture diffusion coefficients, and desorption isotherms. Results show that the combination of different cementitious materials, e.g. the cementitious binder, is the key factor affecting chloride penetration depth. The cementitious binder also strongly affects chloride diffusion coefficient, moisture diffusion coefficient and chloride binding properties, which are all important parameters for the prediction of chloride ingress. KW - Chloride KW - Durability KW - Long-Term Performance KW - Microstructure KW - Transport properties Y1 - 2018 U6 - https://doi.org/10.1016/j.cemconres.2018.06.006 VL - 111 IS - September SP - 94 EP - 103 PB - Elsevier ER - TY - JOUR A1 - Singh, Max Diamond T1 - Orthopedic Medical Devices Under The Scope of The EU MDR JF - MedTech Outlook Y1 - 2019 UR - https://embedded-solutions.medicaltechoutlook.com/cxoinsight/orthopedic-medical-devices-under-the-scope-of-the-eu-mdr-nwid-921.html ER - TY - GEN A1 - Singh, Max Diamond A1 - Schlagintweit, S. A1 - Reischle, G. T1 - Additive-Manufactured Orthopedic Implants Under MDR Y1 - 2020 UR - https://www.odtmag.com/contents/view_online-exclusives/2020-08-11/additive-manufactured-orthopedic-implants-under-mdr/ IS - 08.11.20 ER - TY - GEN A1 - Singh, Max Diamond T1 - Joint NB-Position Paper on Spinal Classification per the MDR Y1 - 2019 UR - https://www.team-nb.org/wp-content/uploads/2019/01/Joint-NB-Spinal-Classification-Decision-Tree_final.pdf ER - TY - THES A1 - Singh, Max Diamond T1 - Aspects of the Dynamics of Spine Surgery Technologies: Assessing the Reality of Innovation and Entrepreneurship in the U.S. Medical Device Industry Y1 - 2016 PB - Karlsruhe Institute of Technology CY - Karlsruhe ER - TY - CHAP A1 - Lataste, Jean-François A1 - Thiel, Charlotte A1 - Franzoni, Elisa T1 - Electrical Resistance T2 - Methods of Measuring Moisture in Building Materials and Structures N2 - Electrical resistance is the ability for a material to impede the flow of electrical current. The resistance (R) is expressed in ohm (Ohm), its inverse is the conductance (C) is expressed in siemens (S). The resistance is function of geometry of tested body and measurement device. So one generally prefers the resistivity (ρΩ) expressed in ohm-meter (Ohm·m), or its inverse the conductivity (σ) in siemens per meter (S/m), representing the intrinsic material’s property. Y1 - 2018 U6 - https://doi.org/10.1007/978-3-319-74231-1_8 SP - 55 EP - 66 PB - Springer ER - TY - CHAP A1 - Hansen, Kurt Kielsgaard A1 - Lataste, Jean-François A1 - Thiel, Charlotte T1 - ND-Methods - From a Surface T2 - Methods of Measuring Moisture in Building Materials and Structures N2 - A complicated application is to measure a moisture distribution with depth from a surface non-destructively. Only a few methods are suitable for such a case. KW - Complicated Applications KW - Electrical Resistivity Tomography KW - Gray Straight Line KW - Integral Moisture Content KW - Resistivity Distribution Model Y1 - 2018 U6 - https://doi.org/10.1007/978-3-319-74231-1_21 SP - 193 EP - 198 PB - Springer ER - TY - CHAP A1 - Thiel, Charlotte A1 - Beddoe, Robin E. T1 - Investigating the role of moisture on concrete carbonation using single-sided H-NMR T2 - International RILEM Conference on Materials, Systems and Structures in Civil Engineering 2016 - Conference segment on Moisture in Materials and Structures, 22-24 August 2016, Lyngby, Denmark N2 - Accelerated test methods are commonly used in order to predict concrete carbonation in natural concentrations. Here, specimens are carbonated at high CO 2 concentrations at a specified temperature and relative humidity. However, the transfer of laboratory results to field behaviour remains difficult because CO 2 transport is affected by the original moisture content of the specimens and additional moisture formed by the carbonation reaction. Therefore knowledge on moisture transport and content during carbonation is required. Specimens made with Ordinary Portland cement and a water/cement ratio 0.50 were exposed to 0.05, 2 and 10 vol.% CO 2 for 28 days. Single-sided NMR moisture profiles were determined before, during and after carbonation. It is shown that moisture content increases due to carbonation at high CO 2 10 %) in the beginning of the exposure. An increase in capillary pore water in front and behind the carbonation front could be observed even after 28d. During natural carbonation moisture changes are mainly due to the change in porosity produced by the carbonation reactions. It is shown that changes in phase composition and thus porosity dominate the carbonation process in cement-based materials. Therefore, the suitability of high CO 2 concentrations is limited for an accelerated test that reflects field condition. Single-sided 1 H NMR proved to be a valuable tool to investigate moisture transport in concrete non-destructively. Y1 - 2016 SN - 978-2-35158-171-1 SP - 261 EP - 268 PB - RILEM Publications S.A.R.L. ER - TY - JOUR A1 - Ott, Christian A1 - Rosengarth, Katharina A1 - Doenitz, Christian A1 - Hoehne, Julius A1 - Wendl, Christina A1 - Dodoo-Schittko, Frank A1 - Lang, Elmar Wolfgang A1 - Schmidt, Nils Ole A1 - Goldhacker, Markus T1 - Preoperative Assessment of Language Dominance through Combined Resting-State and Task-Based Functional Magnetic Resonance Imaging JF - Journal of personalized medicine N2 - Brain lesions in language-related cortical areas remain a challenge in the clinical routine. In recent years, the resting-state fMRI (RS-fMRI) was shown to be a feasible method for preoperative language assessment. The aim of this study was to examine whether language-related resting-state components, which have been obtained using a data-driven independent-component-based identification algorithm, can be supportive in determining language dominance in the left or right hemisphere. Twenty patients suffering from brain lesions close to supposed language-relevant cortical areas were included. RS-fMRI and task-based (TB-fMRI) were performed for the purpose of preoperative language assessment. TB-fMRI included a verb generation task with an appropriate control condition (a syllable switching task) to decompose language-critical and language-supportive processes. Subsequently, the best fitting ICA component for the resting-state language network (RSLN) referential to general linear models (GLMs) of the TB-fMRI (including models with and without linguistic control conditions) was identified using an algorithm based on the Dice index. Thereby, the RSLNs associated with GLMs using a linguistic control condition led to significantly higher laterality indices than GLM baseline contrasts. LIs derived from GLM contrasts with and without control conditions alone did not differ significantly. In general, the results suggest that determining language dominance in the human brain is feasible both with TB-fMRI and RS-fMRI, and in particular, the combination of both approaches yields a higher specificity in preoperative language assessment. Moreover, we can conclude that the choice of the language mapping paradigm is crucial for the mentioned benefits. KW - resting-state fMRI KW - task-based fMRI KW - brain mapping KW - language assessment KW - data-driven analysis Y1 - 2021 U6 - https://doi.org/10.3390/jpm11121342 VL - 11 IS - 12 PB - MDPI ER - TY - GEN A1 - Ott, C. A1 - Rosengarth, K. A1 - Doenitz, Christian A1 - Hoehne, J. A1 - Wendl, C. A1 - Dodoo-Schittko, Frank A1 - Lang, E. A1 - Schmidt, Nils Ole A1 - Goldhacker, Markus T1 - Preoperative assessment of language dominance through combined resting-state and task-based functional magnetic resonance imaging T2 - Brain and Spine N2 - Background: Brain lesions in language-related cortical areas remain a challenge in the clinical routine. In recent years the resting-state fMRI (rs-fMRI) was shown to be a feasible method for preoperative language assessment. The aim of this study was to examine whether language-related resting-state components, which have been obtained using a data-driven independent-component-based identification algorithm, can be supportive in determining language dominance in the left or right hemisphere. Methods: Twenty patients suffering from brain lesions close to supposed language relevant cortical areas were included. Rs-fMRI and task-based (tb-fMRI) were performed for the purpose of preoperative language assessment. Tb-fMRI included a verb generation task with an appropriate control condition (a syllable switching task) to decompose language critical and language supportive processes. Subsequently, the best fitting ICA component for the resting-state language network (RSLN) referential to general linear models (GLMs) of the tb-fMRI (including models with and without linguistic control conditions) was identified using an algorithm based on the Dice-index. Results: The RSLNs associated with GLMs using a linguistic control condition led to significantly higher laterality indices than GLM baseline contrasts. LIs derived from GLM contrasts with and without control conditions alone did not differ significantly. Conclusion: In general, the results suggest that determining language dominance in the human brain is feasible both with tb-fMRI and rs-fMRI, and in particular, the combination of both approaches yields a higher specificity in preoperative language assessment. Moreover, we can conclude that the choice of the language mapping paradigm is crucial for the mentioned benefits. Y1 - 2021 U6 - https://doi.org/10.1016/j.bas.2021.100523 VL - 1 IS - Suppl. 2 PB - Elsevier ER - TY - JOUR A1 - Wein, Simon A1 - Deco, Gustavo A1 - Tomé, Ana Maria A1 - Goldhacker, Markus A1 - Malloni, Wilhelm M. A1 - Greenlee, Mark W. A1 - Lang, Elmar Wolfgang T1 - Brain Connectivity Studies on Structure-Function Relationships: A Short Survey with an Emphasis on Machine Learning JF - Computational intelligence and neuroscience N2 - This short survey reviews the recent literature on the relationship between the brain structure and its functional dynamics. Imaging techniques such as diffusion tensor imaging (DTI) make it possible to reconstruct axonal fiber tracks and describe the structural connectivity (SC) between brain regions. By measuring fluctuations in neuronal activity, functional magnetic resonance imaging (fMRI) provides insights into the dynamics within this structural network. One key for a better understanding of brain mechanisms is to investigate how these fast dynamics emerge on a relatively stable structural backbone. So far, computational simulations and methods from graph theory have been mainly used for modeling this relationship. Machine learning techniques have already been established in neuroimaging for identifying functionally independent brain networks and classifying pathological brain states. This survey focuses on methods from machine learning, which contribute to our understanding of functional interactions between brain regions and their relation to the underlying anatomical substrate. KW - Brain Mapping KW - Brain/diagnostic imaging KW - Diffusion Tensor Imaging KW - Machine Learning KW - Magnetic Resonance Imaging KW - Nerve Net/diagnostic imaging KW - Neural Pathways/diagnostic imaging KW - Structure-Activity Relationship Y1 - 2021 U6 - https://doi.org/10.1155/2021/5573740 SP - 1 EP - 31 PB - Hindawi ER - TY - CHAP A1 - Thiel, Charlotte A1 - Stengel, Thorsten T1 - Nachhaltigkeitsaspekte von Oberbauweisen aus Asphalt und Beton T2 - 10. Münchener Baustoffseminar GRIFFIG - LEISE - DAUERHAFT, Asphalt und Beton im Straßenbau, 10, 2012, München Y1 - 2012 ER - TY - CHAP A1 - Meder, Michael A1 - Plumbaum, Till A1 - Raczkowski, Aleksander A1 - Jain, Brijnesh A1 - Albayrak, Sahin T1 - Gamification in E-Commerce : Tangible vs. Intangible Rewards T2 - Proceedings of the 22nd International Academic Mindtrek Conference : Academic Mindtrek 2018, Tampere Finland, 10.10.2018 - 11.10.2018 N2 - Increasing user participation or changing behavior are key goals when applying gamification. Existing studies in domains such as education, health, and enterprise show that gamification can have a positive impact on meeting these goals. However, there is still a lack of detailed insights into how certain game design elements affect user behavior and motivation. To gain further insight, this paper presents a user study in the field with 20, 000 participants of a mobile e-commerce application over a one-month time period to analyze the impact of gamification in the e-commerce domain and to compare the effectiveness of tangible versus intangible rewards. Results show that gamification has a positive impact in the e-commerce domain. The study also reveals that tangible rewards increase the user activity substantially more than intangible rewards. We further show how tangible rewards affect certain user types and provide a first discussion on the lastingness of these rewards. Y1 - 2018 SN - 9781450365895 U6 - https://doi.org/10.1145/3275116.3275126 SP - 11 EP - 19 PB - ACM CY - New York, NY ER - TY - CHAP A1 - Schildgen, Johannes A1 - Krück, Yannick A1 - Deßloch, Stefan ED - Mitschang, Bernhard ED - Nicklas, Daniela ED - Leymann, Frank ED - Schöning, Harald ED - Herschel, Melanie ED - Teubner, Jens ED - Härder, Theo ED - Kopp, Oliver ED - Wieland, Matthias T1 - Transformations on Graph Databases for Polyglot Persistence with NotaQL T2 - Datenbanksysteme für Business, Technologie und Web, 17. Fachtagung des GI-Fachbereichs "Datenbanken und Informationssyteme" (DBIS) : 06.-10.03.2017 in Stuttgart, Deutschland (BTW 2017) Y1 - 2017 IS - CD-ROM SP - 83 EP - 102 PB - Gesellschaft für Informatik, Bonn ER - TY - JOUR A1 - Strauch, Stefanie A1 - Schliermann, Rainer T1 - Effekte eines Sport- und Bewegungsangebotes auf die Motorik und das Körperselbstkonzept bei Erwachsenen mit geistiger Behinderung JF - Heilpädagogische Forschung : Zeitschrift für Pädagogik und Psychologie bei Behinderungen N2 - Im Mittelpunkt der vorliegenden Studie steht die Frage, welchen Einfluss Sport und Bewegung auf die Motorik und auf die körpernahen Bereiche des Selbstkonzepts bei Erwachsenen mit geistiger Behinderung ausüben. Hierzu wurden die im Rahmen einer 12-monatigen quasi-experimentellen Feldstudie erhobenen Daten einer sportlich aktiven Versuchsgruppe (n = 49) mit denen einer sportlich inaktiven Kontrollgruppe (n = 21) verglichen. Die Ergebnisse weisen die motorische Entwicklungsfähigkeit und Trainierbarkeit von Menschen mit geistiger Behinderung empirisch nach. Neben der Verbesserung im motorischen Bereich konnten, wenn auch geringer ausgeprägt, positive Veränderungen im Bereich des Körperselbstkonzepts beobachtet werden. Der besondere Stellenwert von Bewegung, Sport und Spiel für eine umfassende Persönlichkeitsentwicklung bei Menschen mit geistiger Behinderung wird durch die vorliegende Studie verdeutlicht. KW - Forschungsergebnis KW - Motorik KW - Persönlichkeitsentwicklung KW - Selbstbild KW - Sport KW - Sonderpädagogik KW - Körperlicher Ausdruck KW - Erwachsener KW - Geistig Behinderter Y1 - 2010 SN - 0017-9647 VL - 36 IS - 2 SP - 54 EP - 64 PB - Heilpädagogische Forschung Verl. CY - Schönwalde ER - TY - JOUR A1 - Schliermann, Rainer A1 - Kern, Franziska T1 - Sport im Strafvollzug JF - Neue Praxis : np ; Zeitschrift für Sozialarbeit, Sozialpädagogik & Sozialpolitik KW - Empirische Untersuchung KW - Stress KW - Sport KW - Justizvollzugsanstalt Y1 - 2011 SN - 0342-9857 IS - 3 SP - 243 EP - 257 PB - Verl. Neue Praxis CY - Lahnstein ER - TY - JOUR A1 - Schliermann, Rainer A1 - Heydenreich, Patrick A1 - Bungter, Tanja A1 - Anneken, Volker T1 - Health-related quality of life in working-age adults with visual impairments in Germany JF - Disability & Rehabilitation N2 - Purpose The purpose of this study was to gather data about physical activity and quality of life (QoL) for people of working age with visual impairments to optimize upcoming physical activity-based interventions in vocational rehabilitation. Methods Two hundred and seventy-seven former participants of four vocational rehabilitation centres in Germany answered an online questionnaire. The health-related QOL has been assessed by means of the WHOQOL-BREF questionnaire. The data were analysed via multivariate analysis of covariances (MANCOVAs), univariate analysis of covariances (ANCOVAs) and discriminant function analysis. Results Compared to a normative group of adults aged 36-45, the study group showed lower values in all domains of QOL. The MANCOVA (visual acuity) produced no multivariate significant effect. Also, the ANCOVA showed no significant effect for the global dimension of the WHOQOL-BREF. The MANCOVA (leisure time activity) produced a multivariate significant effect. Post-hoc ANCOVAS revealed significant effects for all four domains of QoL. The ANCOVA analysing the global domain showed a similar significant effect as well. The active persons had higher values in all domains of QoL compared to the more passive participants. Conclusion Interventions in vocational rehabilitation should focus on leisure time activity to enhance QoL. At this stage, the role of physical activity is still unclear and further studies are needed. Implications for rehabilitation People with visual impairments often show a worse quality of life than normal-sighted people. The degree of severity of the visual impairment does not affect quality of life. Sport and physical activity are effective means of improving quality of life. An active leisure time activity supports the improvement of the quality of life of visual-impaired people that participated in a vocational rehabilitation. KW - Employment status KW - Germany KW - ICF KW - job satisfaction KW - leisure activity KW - physical activity KW - vocational rehabilitation Y1 - 2017 U6 - https://doi.org/10.3109/09638288.2016.1146353 SN - 0963-8288 VL - 39 IS - 5 SP - 428 EP - 437 PB - Taylor & Francis CY - Abingdon ER - TY - GEN A1 - Schliermann, Rainer A1 - Bourhim, Steffi ED - Amesberger, Günter ED - Finkenzeller, Thomas ED - Würth, Sabine ED - Amesberger, Günter T1 - Psychologische Fertigkeiten im Hörgeschädigten-Spitzensport: Analyse des Einsatzes bei Kaderathleten T2 - Psychophysiologie im Sport - zwischen Experiment und Handlungsoptimierung : 42. Jahrestagung der Arbeitsgemeinschaft für Sportpsychologie (asp) vom 13.-15. Mai 2010 in Salzburg ; Abstracts KW - Hörgeschädigtensport KW - Psychologische Fertigkeiten KW - Leistungsoptimierung Y1 - 2010 UR - https://www.sportwissenschaft.de/fileadmin/pdf/schriftenreihe/dvs201_asp-2001.pdf SN - 978-3-88020-551-2 SN - 1430-2225 PB - Feldhaus, Edition Czwalina CY - Hamburg ER - TY - CHAP A1 - Heydenreich, Patrick A1 - Schliermann, Rainer A1 - Bungter, Tanja A1 - Anneken, Volker T1 - Motivationale Faktoren von Menschen mit Sehschädigungen in der beruflichen Rehabilitation T2 - 25. Rehabilitationswissenschaftliches Kolloquium - Deutscher Kongress für Rehabilitationsforschung: Gesundheitssystem im Wandel - Perspektiven der Rehabilitation ; vom 29. Februar bis 2. März 2016 in Aachen Y1 - 2016 UR - https://www.deutsche-rentenversicherung.de/SharedDocs/Downloads/DE/Experten/reha_forschung/reha_kolloquium/TB-25Reha-Koll.html SN - 978-3-9817814-1-0 SP - 267 EP - 268 PB - Deutsche Rentenversicherung Bund CY - Berlin ER - TY - CHAP A1 - Rudolph, Clarissa ED - Kurz-Scherf, Ingrid ED - Lepperhoff, Julia ED - Scheele, Alexandra T1 - Frauen- und Gleichstellungspolitik: Gesellschaftlicher Wandel durch Institutionen? T2 - Feminismus: Kritik und Intervention Y1 - 2009 UR - https://www.oth-regensburg.de/fileadmin/media/professoren/s/rudolph/Kurz-Scherf_ua_2009.pdf SN - 978-3-89691-777-5 SP - 115 EP - 132 PB - Westfälisches Dampfboot CY - Münster ER - TY - CHAP A1 - Schliermann, Rainer ED - Strubreither, Wilhelm ED - Neikes, Martina ED - Stirnimann, Daniel ED - Eisenhuth, Jörg ED - Schulz, Barbara ED - Lude, Peter T1 - Motivationsbezogene Faktoren im Rollstuhlsport T2 - Klinische Psychologie bei Querschnittlähmung : Psychologische und psychotherapeutische Interventionen bei psychischen, somatischen und psychosozialen Folgen Y1 - 2015 SN - 978-3-7091-1601-2 SN - 978-3-7091-1600-5 U6 - https://doi.org/10.1007/978-3-7091-1601-2_76 SP - 717 EP - 721 PB - Springer CY - Wien ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Zilch, Konrad ED - Ye, Lieping ED - Feng, Peng ED - Yue, Qingrui T1 - Evaluation of the bond behavior at the intermediate crack element with a special test procedure T2 - Advances in FRP Composites in Civil Engineering : Proceedings of the 5th International Conference on FRP Composites in Civil Engineering (CICE 2010), Sep 27-29, 2010, Beijing, China N2 - The bond behavior of externally bonded reinforcement is one main parameter for the load bearing capacity of strengthened reinforced concrete structures. Because of the low bond force transfer at the outmost bending crack, the bond forces have also been transferred to elements between the cracks in order to effectively utilize the permissible stress of the CFRP strip. Two different experimental series on the bond behavior on the intermediate crack element were carried out. Small tests on an idealized intermediate crack element were made to evaluate the bond stress increase. In the second series parts of a structural element, which had the length of an intermediate crack element were tested to find out about other effects which only occur in the structural element. Based on these experimental data and the differential equation of the sway bond a new concept for the bond behavior of externally bonded reinforcement has been found out. Y1 - 2011 SN - 978-3-642-17486-5 SN - 978-3-642-17487-2 U6 - https://doi.org/10.1007/978-3-642-17487-2_111 SP - 517 EP - 520 PB - Springer CY - Berlin ; Heidelberg ER - TY - CHAP A1 - Zilch, Konrad A1 - Niedermeier, Roland A1 - Finckh, Wolfgang ED - Oehlers, Deric John ED - Griffith, Michael C. ED - Seracino, R. T1 - Guideline for the Performance and Interpretation of Bond Tests on Concrete Specimens with Externally Bonded CFRP Strips T2 - Proceedings of the 9th International Symposium on Fibre Reinforced Polymers in Reinforced Concrete Structures (FRPRCS-9), 13.07. - 15.07.2009, Sydney, Australia Y1 - 2009 SN - 978-0-9806755-0-4 PB - [Univ ersity of Adelaide] CY - [Adelaide] ER - TY - CHAP A1 - Finckh, Wolfgang T1 - Einfluss bauteilspezifischer Effekte auf die Bemessung von mit CFK-Lamellen verstärkten Stahlbetonbauteilen T2 - Beiträge zum Doktorandensymposium 2010, 51. Forschungskolloquium des DAfStb, 11.-12.11.2010, TU Kaiserslautern Y1 - 2010 PB - Deutscher Auschuss für Stahlbeton ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Zilch, Konrad T1 - Strengthening and rehabilitation of reinforced concrete slabs with CFRP T2 - International conference on high rise towers and tall building 2010, April 14-16, Munich Y1 - 2010 CY - München ER - TY - CHAP A1 - Zilch, Konrad A1 - Finckh, Wolfgang T1 - Verstärkung von Betonkonstruktionen mit CFK-Werkstoffen T2 - Proceedings / 53. BetonTage : building the future Y1 - 2009 SP - 174 PB - Bauverl. CY - Gütersloh ER - TY - CHAP A1 - Finckh, Wolfgang ED - Zilch, Konrad T1 - Verstärken mit geklebter Bewehrung - Sachstand und neue Entwicklungen T2 - 13. Münchener Massivbau Seminar 2009 Y1 - 2009 PB - Förderverein Massivbau der TU München CY - München ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Zilch, Konrad A1 - Ellinger, Mathias ED - Motavalli, Masoud T1 - Evaluating the bond stress relationship of externally bonded CFRP-strips at the intermediate crack element T2 - Smart monitoring, assessment and rehabilitation of civil structures : proceedings of SMAR 2011, First Middle East Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures, Dubai, UAE, 8-10 February 2011 at AUD, American University in Dubai UAE N2 - When reinforced concrete is strengthened by using externally bonded CFRP strips it is not sufficient to perform checks just for the end anchorages. The bond forces must be transferred where the load is applied. These bond forces may be transferred by the elements in between flexural cracks which are mainly influenced by the bond behavior of the internal and external reinforcing. Therefore the models which were derived from end anchorage tests must be expanded to include other effects as well. These models were first described theoretically by the differential equation of bond and a bilinear bond stress slippage relationship. To evaluate this theoretically derived relationship numerous experiments on the intermediate crack elements where conducted. In this paper, an evaluation of these experiments in two different ways is shown. The one evaluation is carried out only on the fracture force, the other analysis also takes the slippage occurred in the intermediate crack element tests into account. With both evaluations it can be shown, that besides the previously scheduled bilinear bond approach additional friction effects between the already decoupled fracture surfaces of the bonded strips occur. Y1 - 2011 UR - https://data.smar-conferences.org/SMAR_2011_Proceedings/papers/97.pdf SN - 978-3-905594-58-4 SP - 1 EP - 9 PB - EMPA CY - [Dübendorf] ET - 1 CD-ROM ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Zilch, Konrad T1 - Influence of member-specific effects the bond force transfer of reinforced concrete strengthened with externally bonded CFRP-strips T2 - Proceedings of the Fourth International Symposium "Bond in concrete 2012: Bond, Anchorage, Detailing" -Brescia, Italy, 17th - 20th June 2012. Volume 2: Bond in New Materials and Under Severe Conditions Y1 - 2012 SN - 978-88-907078-3-4 SN - 8890707836 PB - Publisher creation CY - Manerbio ER - TY - CHAP A1 - Zilch, Konrad A1 - Niedermeier, Roland A1 - Finckh, Wolfgang ED - Motavalli, Masoud T1 - New German guideline for strengthening concrete structures with adhesive bonded reinforcement T2 - Smart monitoring, assessment and rehabilitation of civil structures, Proceedings of SMAR 2011, First Middle East Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures, Dubai, UAE, 8 - 10 February 2011 at AUD, American University in Dubai UAE Y1 - 2011 SN - 978-3-905594-58-4 PB - EMPA ET - 1 CD-ROM Ill., graph. Darst. 1 Buch (212 S.) ER - TY - CHAP A1 - Gläser, Christian A1 - Jung-Saeng, A. A1 - Finckh, Wolfgang T1 - Recent developments of spliced segmental griders using enhanced post tensioning systems T2 - Third international fib congress incorporating the PCI annual convention and bridge conference 2010, May 29-June 2, 2010, Washington, D.C. Y1 - 2010 PB - Precast/Prestressed Concrete Institute, CY - Chicago, IL ET - 1 DVD-ROM ER - TY - CHAP A1 - Finckh, Wolfgang T1 - EN 1992-1-1 Chapter 7.3: Crack Control – PRB Suggestions for Improvement T2 - Proceedings of the First PRB-Workshop on Contributions for the Ease of Use of the Eurocodes, 4th and 5th December 2014, Berlin Y1 - 2014 SN - 978-3-410-25201-6 SP - 79 EP - 80 PB - Praxisgerechte Regelwerke im Bauwesen e.V. CY - Berlin ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Zilch, Konrad T1 - Practical-Orientated Full-Scale Tests In Comparison With Bond Checks of Different Guidelines T2 - The Third Asia-Pacific Conference on FRP in Structures (APFIS2012), 2 to 4 February 2012, Sapporo, Japan Y1 - 2012 CY - Sapporo ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Zilch, Konrad T1 - Specific structural effects by strengthening pre-stressed concrete beams with externally bonded FRP T2 - 6th International Conference on FRP Composites in Civil Engineering; CICE 2012 Rome ; 13-15 June Y1 - 2012 PB - Sapienza Universita de Roma CY - Rom ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Zilch, Konrad T1 - Specific structural effects on the bond force transfer of reinforced concrete strengthened with externally bonded CFRP-strips T2 - Building Materials and Building Technology to Preserve the Built Heritage Y1 - 2011 SN - 978-3-937066-21-9 CY - Brno ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Zilch, Konrad T1 - Influence of shear crack offsets on the bond behavior of EBR at the intermediate crack element T2 - 6th International Conference on FRP Composites in Civil Engineering : CICE 2012 Rome ; 13-15 June Y1 - 2012 PB - Sapienza Universita de Roma CY - Rom ET - CD-ROM ER - TY - JOUR A1 - Fellner, Marie-Christin A1 - Volberg, Gregor A1 - Wimber, Maria A1 - Goldhacker, Markus A1 - Greenlee, Mark W. A1 - Hanslmayr, Simon T1 - Spatial mnemonic encoding: Theta power decreases and medial temporal lobe BOLD increases co-occur during the usage of the method of loci JF - eNeuro N2 - The method of loci is one, if not the most, efficient mnemonic encoding strategy. This spatial mnemonic combines the core cognitive processes commonly linked to medial temporal lobe (MTL) activity: spatial and associative memory processes. During such processes, fMRI studies consistently demonstrate MTL activity, while electrophysiological studies have emphasized the important role of theta oscillations (3–8 Hz) in the MTL. However, it is still unknown whether increases or decreases in theta power co-occur with increased BOLD signal in the MTL during memory encoding. To investigate this question, we recorded EEG and fMRI separately, while human participants used the spatial method of loci or the pegword method, a similarly associative but nonspatial mnemonic. The more effective spatial mnemonic induced a pronounced theta power decrease source localized to the left MTL compared with the nonspatial associative mnemonic strategy. This effect was mirrored by BOLD signal increases in the MTL. Successful encoding, irrespective of the strategy used, elicited decreases in left temporal theta power and increases in MTL BOLD activity. This pattern of results suggests a negative relationship between theta power and BOLD signal changes in the MTL during memory encoding and spatial processing. The findings extend the well known negative relation of alpha/beta oscillations and BOLD signals in the cortex to theta oscillations in the MTL. KW - EEG KW - fMRI KW - memory encoding KW - method of loci KW - mnemonics KW - theta oscillations Y1 - 2016 U6 - https://doi.org/10.1523/ENEURO.0184-16.2016 SN - 2373-2822 VL - 3 IS - 6 SP - 1 EP - 16 PB - Society for Neuroscience CY - Washington, DC ER - TY - JOUR A1 - Heckner, Markus A1 - Mühlbacher, Susanne A1 - Wolff, Christian T1 - Tagging tagging. Analysing user keywords in scientific bibliography management systems JF - Journal of Digital Information N2 - In this paper, an empirical study of tagging behaviour in web-based bibliographic annotation systems is presented. Starting from an initial category finding phase in which tags attributed to selected articles from Connotea were classified we have set up a category model for linguistic and functional aspects of tag usage as well as for the relationship between tags and document full text. In a second phase this model is applied to approx. 500 tagged articles from the information and computer technology domain randomly selected from Connotea. Our findings show significant differences to other tagging research which was primarily conducted using popular (non-scientific) tagging platforms like Flickr or Delicious. We observe a great overlap of tag material and document text and rather few non-content related tags. The comparison of user tags with author keywords shows that users tend to use less and more general tags. Finally, system functionality seems to play a role for users’ tagging behaviour. Y1 - 2008 UR - https://jodi-ojs-tdl.tdl.org/jodi/article/view/246 VL - 9 IS - 2 PB - Multimedia Research Group ER - TY - JOUR A1 - Staab, T. A1 - Klenk, E. A1 - Galka, Stefan A1 - Günthner, Willibald A. T1 - Efficiency in in-plant milk-run systems - The influence of routing strategies on system utilization and process stability JF - Journal of Simulation N2 - In-plant milk-run systems represent transportation systems, where materials are delivered from a central storage area to several points of use on fixed routes and in short and defined intervals. Milk-run systems generally enable frequent deliveries in low lot sizes with short lead times and low inventories at the points of use. Thus, stable and reliable system operation is crucial to avoid delays and material shortages. In industrial practice, milk-run trains usually share resources, for example, loading areas and technology and use the same tracks, leading to dependencies between routes and possible traffic jams and blockages, which significantly affect cycle times and may lead to instabilities in the system. We present a simulation model to analyse in-plant milk-run systems with a focus on typical traffic situations. We describe its application to a large industrial case study in detail and derive recommendations for designing routes with low risk of delays. KW - logistics KW - traffic KW - simulation KW - production KW - vehicle routing KW - in-plant milk-run Y1 - 2016 U6 - https://doi.org/10.1057/jos.2015.6 SN - 1747-7786 SN - 1747-7778 VL - 10 IS - 2 SP - 137 EP - 143 PB - Taylor & Francis CY - Abingdon ER - TY - CHAP A1 - Braun, Stefan A1 - Schildgen, Johannes A1 - Deßloch, Stefan T1 - Visualization of NoSQL transformations using sampling techniques | Visualisierung von NoSQL-Transformationen unter der Verwendung von Sampling-Techniken T2 - Proceedings of the LWA 2015 workshops: KDML, FGWM, IR, and FGDB : Trier, Germany, October 7-9, 2015 N2 - Analysen auf NoSQL-Datenbanken sind oft langdauernd und die Ergebnisse fur den Benutzer haufig schwer verst ̈andlich. Wir prasentieren eine Möglichkeit, Datenmengen aus Wide-Column Stores mittels der Transformationssprache NotaQL zu transformieren sowie zu aggregieren und die Ergebnisse in Form von Diagrammen dem Benutzer darzustellen. Dabei kommen Sampling-Techniken zum Einsatz, um die Berechnung auf Kosten der Genauigkeit zu beschleunigen. Das von uns verwendete iterative Samplingverfahren sorgt fur eine kontinuierliche Verbesserung der Berechnungsgenauigkeit und bietet zudem Möglichkeiten zur Genauigkeitsabschätzung, die in Form von Konfidenzintervallen in den Diagrammen dargestellt werden kann. Y1 - 2015 UR - https://ceur-ws.org/Vol-1458/H06_CRC77_Braun.pdf SP - 427 EP - 438 PB - RWTH Aachen CY - Aachen ER - TY - CHAP A1 - Ulbrich, Alexander A1 - Galka, Stefan A1 - Günthner, Willibald A. T1 - Secure planning of order picking systems with the aid of simulation T2 - Proceedings of th 43rd Hawaii International Conference on System Sciences (HICSS), 5-8 Jan. 2010, Koloa, Kauai, Hawaii N2 - Planning a new logistics center is a quite difficult job. Depending on the requirements there are a great number of possible design versions. The planner has to consider not only the present but also the future requirements. Up to now, the planner decides on the basis of experience which system will perform the requested services best. This paper illustrates the redesign of a new order-picking system in industry supported by a simulation tool of our institute designed especially for the rough planning. With the described project the road capability of the applied simulation concept is underlined. Several versions based on the requirements were investigated and evaluated. Key figures are calculated and a recommendation depending on performance and arising expenses is given. Y1 - 2010 SN - 978-0-7695-3869-3 SN - 076953869X U6 - https://doi.org/10.1109/HICSS.2010.326 SN - 1530-1605 SP - 1 EP - 7 PB - IEEE CY - Piscataway, NJ ER - TY - JOUR A1 - Galka, Stefan T1 - Operating strategies for in-plant milk-run systems JF - IFAC-Papers OnLine N2 - In-plant milk-run systems are transportation systems, where materials are delivered from a central storage area to several points of use on defined routes and in short intervals. Milk-run systems generally enable frequent deliveries in smaller lot sizes with short lead times and low inventory at the points of use. In real milk-run systems, the number of deliveries per interval varies due to, e.g., variations in the production program. To enable efficient and stable milk-run system operations, these systems therefore must be able to cope with peaks in the number of deliveries. We develop different strategies for handling these delivery peaks and evaluate them with respect to delivery cost, lead time and service level using real material consumption data from two large companies from the automotive industry. KW - Automobile industry KW - Control algorithms KW - Lean manufacturing KW - Logistics KW - Mulk-run systems KW - Production systems KW - Transportation control Y1 - 2015 U6 - https://doi.org/10.1016/j.ifacol.2015.06.361 VL - 48 IS - 3 SP - 1882 EP - 1887 PB - Elsevier CY - Frankfurt ER - TY - JOUR A1 - Galka, Stefan A1 - Klenk, Eva Marianne A1 - Günthner, Willibald A. T1 - Potenziale einer flexiblen Routenzugsteuerung: Strategien zum besseren Umgang mit schwankenden Transportbedarfen JF - Zeitschrift fuer Wirtschaftlichen Fabrikbetrieb : ZWF T2 - Potentials of a in-plant milk run control Y1 - 2015 U6 - https://doi.org/10.3139/104.111444 SN - 2511-0896 SN - 0947-0085 VL - 110 IS - 12 SP - 805 EP - 809 PB - de Gruyter CY - Berlin ER - TY - CHAP A1 - Said, Nadia A1 - Engelhart, Michael A1 - Kirches, Christian A1 - Körkel, Stefan A1 - Holt, Daniel V. ED - Taatgen, Niels A. ED - Van Vugt, Marieke K. ED - Borst, Jelmer P. ED - Mehlhorn, Katja T1 - Mathematical formalization and optimization of an ACT-R instance-based learning model T2 - Proceedings of ICCM 2015 - 13th International Conference on Cognitive Modeling, 09-11.04.2015, Groningen N2 - The performance of cognitive models often depends on the settings of specific model parameters, such as the rate of memory decay or the speed of motor responses. The systematic exploration of a model’s parameter space can yield relevant insights into model behavior and can also be used to improve the fit of a model to human data. However, exhaustive parameter space searches quickly run into a combinatorial explosion as the number of parameters investigated increases. Taking an established instance-based learning task as example, we show how simulation using parallel computing and derivative-free optimization methods can be applied to investigate the effects of different parameter settings. We find that both global optimization methods involving genetic algorithms as well as local methods yield satisfactory results in this case. Furthermore, we show how a model implemented in a specific cognitive architecture (ACT-R) can be mathematically reformulated to prepare the application of derivative-based optimization methods which promise further efficiency gains for quantitative analysis. KW - cognitive modeling KW - ACT-R KW - instance-based learning KW - discrete-time system KW - derivative-free optimization KW - parameter identification Y1 - 2015 UR - http://www.cognitive-modeling.com/proceedings/papers/0005/paper0005.pdf SN - 978-90-367-7763-6 SP - 25 EP - 30 PB - University of Groningen ER - TY - CHAP A1 - Schildgen, Johannes A1 - Deßloch, Stefan ED - Maneth, Sebastian T1 - NotaQL is not a query language! It’s for data transformation on wide-column stores T2 - Data Science : 30th British International Conference on Databases, BICOD 2015 Edingburgh, UK, July 6-8, 2015, Proceedings N2 - It is simple to query a relational database because all columns of the tables are known and the language SQL is easily applicable. In NoSQL, there usually is no fixed schema and no query language. In this article, we present NotaQL, a data-transformation language for wide-column stores. NotaQL is easy to use and powerful. Many MapReduce algorithms like filtering, grouping, aggregation and even breadth-first-search, PageRank and other graph and text algorithms can be expressed in two or three short lines of code. KW - NoSQL KW - Transformation KW - Language KW - Wide-column stores Y1 - 2015 SN - 978-3-319-20423-9 SN - 978-3-319-20424-6 U6 - https://doi.org/10.1007/978-3-319-20424-6_14 SN - 1611-3349 SN - 0302-9743 VL - 9147 SP - 139 EP - 151 PB - Springer Nature ER - TY - JOUR A1 - Schmidt, Andreas A1 - Potschka, Andreas A1 - Körkel, Stefan A1 - Bock, Hans Georg T1 - Derivate-extended pod reduced-order modelling for parameter estimation JF - SIAM Journal on Scientific Computing N2 - In this article we consider model reduction via proper orthogonal decomposition (POD) and its application to parameter estimation problems constrained by parabolic PDEs. We use a first discretize then optimize approach to solve the parameter estimation problem and show that the use of derivative information in the reduced-order model is important. We include directional derivatives directly in the POD snapshot matrix and show that, equivalently to the stationary case, this extension yields a more robust model with respect to changes in the parameters. Moreover, we propose an algorithm that uses derivative-extended POD models together with a Gauss--Newton method. We give an a posteriori error estimate that indicates how far a suboptimal solution obtained with the reduced problem deviates from the solution of the high dimensional problem. Finally we present numerical examples that showcase the efficiency of the proposed approach. KW - proper orthogonal decomposition KW - parameter estimation KW - error estimates Y1 - 2013 U6 - https://doi.org/10.1137/120896694 SN - 1095-7197 SN - 1064-8275 VL - 35 IS - 6 PB - SIAM CY - Philadelphia, Pa. ER - TY - JOUR A1 - Schildgen, Johannes A1 - Jörg, Thomas A1 - Dossinger, Manuel A1 - Deßloch, Stefan T1 - Marimba: A framework for making MapReduce jobs incremental JF - Proceedings - 2014 IEEE International Congress on Big Data, BigData Congress 2014, 27 June 2014 - 02 July 2014, Anchorage, AK, USA N2 - Many MapReduce jobs for analyzing Big Data require many hours and have to be repeated again and again because the base data changes continuously. In this paper we propose Marimba, a framework for making MapReduce jobs incremental. Thus, a recomputation of a job only needs to process the changes since the last computation. This accelerates the execution and enables more frequent recomputations, which leads to results which are more up-to-date. Our approach is based on concepts that are popular in the area of materialized views in relational database systems where a view can be updated only by aggregating changes in base data upon the previous result. KW - Aggregates KW - Rhythm KW - Computational modeling KW - Programming KW - Google KW - Big data KW - Relational databases Y1 - 2014 U6 - https://doi.org/10.1109/BigData.Congress.2014.27 PB - IEEE ER - TY - JOUR A1 - Lemoine-Nava, Roberto A1 - Walter, Sebastian F. A1 - Körkel, Stefan A1 - Engell, Sebastian T1 - Online Optimal Experiment Design: Reduction of the Number of Variables JF - IFAC-PapersOnLine N2 - In this work, a method for reducing the number of degrees of freedom in online optimal dynamic experiment design problems for systems described by differential equations is proposed. The online problems are posed such that only the inputs which extend an operation policy resulting from an experiment designed offline are optimized. This is done by formulating them as multiple experiment designs, considering explicitly the information of the experiment designed offline and possible time delays unknown a priori. The performance of the method is shown for the case of the separation of isopropanolol isomers in a Simulated Moving Bed plant. KW - Optimal experiment design KW - Large scale systems KW - Decomposition methods KW - Partial differential equations KW - Time delay KW - Chromatography KW - Simulated Moving Bed process Y1 - 2016 U6 - https://doi.org/10.1016/j.ifacol.2016.07.302 VL - 49 IS - 7 SP - 889 EP - 894 PB - Elsevier ER - TY - CHAP A1 - Zeitler, Berndt A1 - Höller, Christoph A1 - Mahn, Jeffrey T1 - Empirical model of direct sound transmission through lightweight wood-framed construction T2 - Implementing noise control technology : 44th International Congress and Exposition on Noise Control Engineering (Internoise 2015) : San Francisco, California, USA, 9 - 12 August 2015 N2 - Tools to predict sound transmission through building elements are beneficial from both amarketing and a research standpoint. Prediction models can assist with the optimization ofelement performance and often reduce both cost and time in projects. However, the morephysical phenomena are to be included in the model, the more input data that is needed,which in some cases can be quite time-consuming and costly to collect. A balance is neededbetween the input and modeling effort and the output, which is usually delivered in onethird octave frequency bands or single number ratings. Many different types of models arecommonly used, including analytical, numerical, and empirical are used, all of which haveadvantages and disadvantages. In this paper, the latter type is presented using a set ofphysical properties of lightweight wood elements, and the errors made in the prediction arequantified. The disadvantage of empirical compared to analytical modeling is that thephysical phenomena are more difficult to identify. The advantage is often the simplicityand accuracy of the prediction results. Y1 - 2015 UR - https://www.researchgate.net/publication/281065914_Empirical_Model_of_Direct_Sound_Transmission_through_Lightweight_Wood-Framed_Construction PB - Curran CY - Red Hook, NY ER - TY - JOUR A1 - Wagner, Marcus A1 - Pinsky, Peter M. A1 - Malhotra, Manish T1 - A multiple-frequency partial-field method for exterior acoustics based on Padé via lanczos approximants JF - Proceedings of the ASME Noise Control and Acoustics Division - 2001 : presented at the 2001 ASME International Mechanical Engineering Congress and Exposition, November 11 - 16, 2001, New York, New York N2 - A solution methodology is introduced for the efficient computation of the acoustic field over restricted domains and for a frequency window. Typically, such partial field solutions include, for example, surfaces enclosing the radiating structure or even single points in the computational domain. The multiple-frequency partial-field (MFPF) method starts out by reformulating the finite element matrix system into a suitable shifted form. The DtN map is used as a radiation boundary condition and is interpreted as a low rank update of the matrix problem. The shifted standard form is then approximated by a rational matrix-valued Padé approximant and solved simultaneously over a frequency range. To obtain the Padé approximation, a banded unsymmetric Lanczos process is applied on the standard shifted form exploiting the matrix Padé-via-Lanczos connection. Numerical examples show the feasibility of the outlined procedure. Y1 - 2001 SN - 0-7918-3551-0 U6 - https://doi.org/10.1115/IMECE2001/NCA-23524 IS - 28 SP - 229 EP - 234 PB - ASME CY - New York, NY ER - TY - JOUR A1 - Winkler, Klaudia T1 - Der Frauenorientierungsindex - ein Instrument zur Beurteilung des Ausmaßes der frauenspezifischen Orientierung von Behandlungsangeboten im Suchtbereich JF - Wiener Zeitschrift für Suchtforschung N2 - Die Notwendigkeit geschlechtsspezifische Aspekte auch bei der Gestaltung der stationären Behandlungsangebote im Suchtbereich zu berücksichtigen, gewinnt zunehmend an Akzeptanz. Bisher fehlen jedoch Daten dazu, inwieweit dieser Anspruch im Rahmen der stationären Behandlungsangebote für Frauen bereits umgesetzt wird. Die vorliegende Untersuchung hatte daher zum Ziel aufzuzeigen, wie sehr sich die Behandlungsangebote in Alkoholfachkliniken an den Bedürfnissen alkoholabhängiger Frauen orientieren. Dazu wurde, basierend auf den in der Literatur formulierten Forderungen, die an die Gestaltung der Behandlungsangebote für alkoholabhängige Frauen gestellt wurden, ein Index gebildet, der das Ausmaß der Frauenorientierung der Behandlungsangebote in den Kliniken beschreibt. Die Verwendung des Index erlaubt den direkten Vergleich der verschiedenen Kliniken. In die Untersuchung gingen Daten aus 27 zufällig ausgewählten Fachkliniken ein. Die Kliniken unterscheiden sich deutlich hinsichtlich des Ausmaßes der Frauenorientierung der Behandlungs- angebote. T2 - The female orientation index - An instrument to assess the extent of treatment modalities for female addicts Y1 - 1999 UR - http://sfu-oc.sfu.ac.at/index.php/s/WC5FBhnAJcthLWT#pdfviewer SN - 1012-9375 VL - 22 IS - 1 SP - 3 EP - 9 PB - Anton Proksch-Inst. ; Ludwig Boltzmann-Inst. für Suchtforschung CY - Wien ER - TY - JOUR A1 - Walter, Sebastian F. A1 - Schmidt, Andrea A1 - Körkel, Stefan T1 - Adjoint-based optimization of experimental designs with many control variables JF - Journal of Process Control N2 - We propose a method for an efficient optimization of experimental designs, using a combination of discrete adjoint computations, Taylor arithmetic and matrix calculus. Compared to the state of the art of using finite differences or the forward mode of automatic differentiation, our proposed approach leads to a reduction of the relative temporal complexity from linear to constant time in the number of control variables and measurement weights. We demonstrate that the advantageous complexity results are not only of theoretical nature, but lead to significant speedups in practice as well. With our implementation we are very close to the theoretical bound of the cheap gradient principle. We present one academic (spatially discretized heat equation) and two industrial application examples (biochemical process/Diesel-oxidation catalysis process) where we achieve speedups that range between 10 and 100. In addition to our core results, we also describe an efficient adjoint approach for the treatment of differential algebraic equations and present adjoint formulas for constrained least-squares problems. KW - Automatic differentiation KW - Constrained least-squares KW - Differential algebraic equation KW - Optimum experimental design KW - Reverse mode Y1 - 2014 U6 - https://doi.org/10.1016/j.jprocont.2014.06.019 SN - 0959-1524 VL - 24 IS - 10 SP - 1504 EP - 1515 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Zeitler, Berndt A1 - Mahn, Jeffrey A1 - Sabourin, Ivan A1 - Höller, Christoph A1 - Schoenwald, Stefan T1 - Apparent airborne sound insulation of hybrid wood-concrete masonry assemblies T2 - Euronoise 2015 : 10th European Congress and Exposition on Noise Control Engineering : Maastricht, 31 May - 3 June 2015 N2 - As part of a research project to develop design solutions for concrete-masonry buildings for the Canadian market, the apparent sound insulation performance of hybrid assemblies with concrete masonry walls and wood joist floors was evaluated. In this paper, the effect of junction coupling is investigated in an ISO 15712 flanking prediction context. Airborne flanking path data predicted according to ISO 15712 are compared to data measured using the indirect ISO 10848 shielding method. Recommendations are made on how appropriate the application of ISO 15712 is for this type of hybrid assembly. Y1 - 2015 UR - https://www.conforg.fr/euronoise2015/proceedings/data/articles/000436.pdf SP - 2515 EP - 2520 CY - Maastricht ER - TY - CHAP A1 - Yoshioka, Takuya A1 - Sehr, Armin A1 - Delcroix, Marc A1 - Kinoshita, Keisuke A1 - Maas, Roland A1 - Nakatani, Tomohiro A1 - Kellermann, Walter T1 - Survey on approaches to speech recognition in reverberant environments T2 - Asia-Pacific Signal & Information Processing Association annual summit and conference (APSIPA ASC), 2012 : Hollywood, California, USA, 3 - 6 Dec. 2012 N2 - This paper overviews the state of the art in reverberant speech processing from the speech recognition viewpoint. First, it points out that the key to successful reverberant speech recognition is to account for long-term dependencies between reverberant observations obtained from consecutive time frames. Then, a diversity of approaches that exploit the long-term dependencies in various ways is described, ranging from signal and feature dereverberation to acoustic model compensation tailored to reverberation. A framework for classifying those approaches is presented to highlight similarities and differences between them. KW - Speech recognition KW - Hidden Markov models KW - Reverberation KW - Speech KW - Vectors KW - Speech processing Y1 - 2012 SN - 978-0-6157-0050-2 PB - IEEE ER - TY - JOUR A1 - Weiler, Christoph Karl Felix A1 - Körkel, Stefan T1 - Optimum experimental design for extended Gaussian disorder modeled organic semiconductor devices JF - Journal of Applied Physics N2 - We apply optimum experimental design (OED) to organic semiconductors modeled by the extended Gaussian disorder model (EGDM) which was developed by Pasveer et al. [Phys. Rev. Lett. 94, 206601 (2005)]. We present an extended Gummel method to decouple the corresponding system of equations and use automatic differentiation to get derivatives with the required accuracy for OED. We show in two examples, whose parameters are taken from Pasveer et al. [Phys. Rev. Lett. 94, 206601 (2005)] and Mensfoort and Coehoorn [Phys. Rev. B 78, 085207 (2008)] that the linearized confidence regions of the parameters can be reduced significantly by applying OED resulting in new experiments with a different setup. Y1 - 2013 U6 - https://doi.org/10.1063/1.4794365 VL - 113 IS - 9 PB - AIP CY - Melville, NY ER - TY - GEN A1 - Greenlee, Mark W. A1 - Anstis, Stuart A1 - Rosengarth, Katharina A1 - Goldhacker, Markus A1 - Brandl-Rühle, Sabine A1 - Plank, Tina T1 - Neural correlates of perceptual filling-in: fMRI evidence in the foveal projection zone of patients with central scotoma T2 - Journal of Vision / Vision Sciences Society Annual Meeting Abstract N2 - Patients with juvenile retinal dystrophy often report that they are unaware of their central scotoma, suggesting the presence of perceptual filling-in. We used functional Magnetic Resonance Imaging (fMRI) to determine possible neural correlates of perceptual filling-in in patients with retinal distrophy and clinically established central scotoma in both eyes. The data of 5 patients (Stargardt disease, cone-rod dystrophy; mean age 45 yrs; scotoma diameter 10-20°) and of 5 normally sighted controls were analyzed. Fixation behaviour and perimetry were measured with a Nidek microperimeter. Magnetic resonance imaging was performed using a Siemens 3T Allegra scanner. We stimulated the central visual field (30 deg) with a vertically oriented, low spatial frequency (1 c/deg) high-contrast sinewave grating that was either a) continuous, or b) was interrupted by a central grey disk. The disk was either slightly larger than the scotoma (detectable on 75% of trials) or slightly smaller (detectable on 25% of trials). To control for attention, an eccentric fixation task was performed during scanning. Data were analyzed using SPM8 (GLM with ROI analysis to obtain percent signal change for foveal projection zone). Results: for all patients, the BOLD signal in the foveal projection area was significantly higher for the small disk (i.e., condition leading to complete filling-in) than for the large disk (i.e., no filling-in). This effect was absent in the control subjects. Our findings support the existence of an active neural process that leads to filling-in in patients with central visual field scotomata. Y1 - 2012 U6 - https://doi.org/10.1167/12.9.1303 SN - 1534-7362 VL - 12 IS - 9 PB - ARVO ER - TY - JOUR A1 - Goldhacker, Markus A1 - Rosengarth, Katharina A1 - Plank, Tina A1 - Greenlee, Mark W. T1 - The effect of feedback on performance and brain activation during perceptual learning JF - Vision research N2 - We investigated the role of informative feedback on the neural correlates of perceptual learning in a coherent-motion detection paradigm. Stimulus displays consisted of four patches of moving dots briefly (500 ms) presented simultaneously, one patch in each visual quadrant. The coherence level was varied in the target patch from near threshold to high, while the other three patches contained only noise. The participants judged whether coherent motion was present or absent in the target patch. To guarantee central fixation, a secondary RSVP digit-detection task was performed at fixation. Over six training sessions subjects learned to detect coherent motion in a predefined quadrant (i.e., the learned location). Half of our subjects were randomly assigned to the feedback group, where they received informative feedback after each response during training, whereas the other group received non-informative feedback during training that a response button was pressed. We investigated whether the presence of informative feedback during training had an influence on the learning success and on the resulting BOLD response. Behavioral data of 24 subjects showed improved performance with increasing practice. Informative feedback promoted learning for motion displays with high coherence levels, whereas it had little effect on learning for displays with near-threshold coherence levels. Learning enhanced fMRI responses in early visual cortex and motion-sensitive area MT+ and these changes were most pronounced for high coherence levels. Activation in the insular and cingulate cortex was mainly influenced by coherence level and trained location. We conclude that feedback modulates behavioral performance and, to a lesser extent, brain activation in areas responsible for monitoring perceptual learning. KW - Perceptual learning KW - Functional MRI KW - Feedback KW - Coherent motion detection Y1 - 2014 U6 - https://doi.org/10.1016/j.visres.2013.11.010 SN - 1878-5646 SN - 0042-6989 VL - 99 SP - 99 EP - 110 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Greenlee, Mark W. A1 - Rosengarth, Katharina A1 - Schmalhofer, Carolin A1 - Goldhacker, Markus A1 - Brandl-Rühle, Sabine A1 - Plank, Tina T1 - Perceptual learning in patients with central scotomata due to hereditary and age-related macular dystrophy JF - Journal of Vision N2 - Hereditary and age-related forms of macular dystrophy (MD) are characterized by loss of cone function in the fovea, leading to central scotomata and eccentric fixation at the so-called preferred retinal locus (PRL). We investigated whether perceptual learning enhances visual abilities at the PRL. We also determined the neural correlates (3-Tesla fMRI) of learning success. Twelve MD patients (eight with age-related macular dystrophy, four with hereditary macular dystrophies) were trained on a texture discrimination task (TDT) over six days. Patients underwent three fMRI sessions (before, during and after training) while performing the TDT (target at PRL or opposite PRL). Reading speed, visual acuity (Vernier task) and contrast sensitivity were also assessed before and after training. With one exception, all patients showed improved performance (i.e. significant decrease in stimulus onset asynchronies and reaction times, significant increase in hit rates) on the TDT. Eight patients also showed moderate increases in reading speed, six patients showed improved thresholds in contrast sensitivity and nine patients showed improved thresholds in a vernier visual acuity task after TDT training. We found an increase in BOLD response in the projections zone of the PRL in the primary visual cortex in nine of twelve patients after training. The change in fMRI signal correlated (r = .8; p = .02) with the patients’ performance enhancements when the target was in the PRL. The results suggest that perceptual learning can enhance eccentric vision and cortical processing in MD patients. Y1 - 2014 U6 - https://doi.org/10.1167/14.10.666 VL - 14 IS - 10 SP - 666 PB - ARVO ER - TY - JOUR A1 - Frikel, Jürgen T1 - Sparse regularization in limited angle tomography JF - Applied and Computational Harmonic Analysis N2 - We investigate the reconstruction problem of limited angle tomography. Such problems arise naturally in applications like digital breast tomosynthesis, dental tomography, electron microscopy, etc. Since the acquired tomographic data is highly incomplete, the reconstruction problem is severely ill-posed and the traditional reconstruction methods, e.g. filtered backprojection (FBP), do not perform well in such situations. To stabilize the reconstruction procedure additional prior knowledge about the unknown object has to be integrated into the reconstruction process. In this work, we propose the use of the sparse regularization technique in combination with curvelets. We argue that this technique gives rise to an edge-preserving reconstruction. Moreover, we show that the dimension of the problem can be significantly reduced in the curvelet domain. To this end, we give a characterization of the kernel of the limited angle Radon transform in terms of curvelets and derive a characterization of solutions obtained through curvelet sparse regularization. In numerical experiments, we will show that the theoretical results directly translate into practice and that the proposed method outperforms classical reconstructions. KW - Curvelets KW - Dimensionality reduction KW - limited angle tomography KW - Radon transform KW - Sparse regularization Y1 - 2013 U6 - https://doi.org/10.1016/j.acha.2012.03.005 VL - 34 IS - 1 SP - 117 EP - 141 PB - Elsevier ER - TY - JOUR A1 - Frikel, Jürgen T1 - Short communication: Dimensionality reduction of curvelet sparse regularizations in limited angle tomography JF - Proceedings in applied mathematics and mechanics : PAMM N2 - We investigate the reconstruction problem for limited angle tomography. Such problems arise naturally in applications like digital breast tomosynthesis, dental tomography, etc. Since the acquired tomographic data is highly incomplete, the reconstruction problem is severely ill-posed and the traditional reconstruction methods, such as filtered backprojection (FBP), do not perform well in such situations. To stabilize the inversion we propose the use of a sparse regularization technique in combination with curvelets. We argue that this technique has the ability to preserve edges. As our main result, we present a characterization of the kernel of the limited angle Radon transform in terms of curvelets. Moreover, we characterize reconstructions which are obtained via curvelet sparse regularizations at a limited angular range. As a result, we show that the dimension of the limited angle problem can be significantly reduced in the curvelet domain. Y1 - 2011 U6 - https://doi.org/10.1002/pamm.201110412 SN - 1617-7061 VL - 11 IS - 1 SP - 847 EP - 848 PB - Wiley-VCH CY - Weinheim ER - TY - JOUR A1 - Frikel, Jürgen A1 - Quinto, Eric Todd T1 - Artifacts in Incomplete Data Tomography with Applications to Photoacoustic Tomography and Sonar JF - SIAM Journal on Applied Mathematics N2 - We develop a paradigm using microlocal analysis that allows one to characterize the visible and added singularities in a broad range of incomplete data tomography problems. We give precise characterizations for photoacoustic and thermoacoustic tomography and sonar, and provide artifact reduction strategies. In particular, our theorems show that it is better to arrange sonar detectors so that the boundary of the set of detectors does not have corners and is smooth. To illustrate our results, we provide reconstructions from synthetic spherical mean data as well as from experimental photoacoustic data. KW - computed tomography KW - Fourier integral operators KW - Lambda tomography KW - limited angle tomography KW - microlocal analysis KW - photoacoustic tomography KW - radon transforms KW - sonar KW - spherical mean KW - thermoacoustic tomography Y1 - 2015 U6 - https://doi.org/10.1137/140977709 SN - 1095-712X SN - 0036-1399 VL - 75 IS - 2 SP - 703 EP - 725 PB - Society for Industrial and Applied Mathematics CY - Philadelphia, Pa. ER - TY - JOUR A1 - Goldhacker, Markus A1 - Rosengarth, Katharina A1 - Anstis, Stuart A1 - Wirth, Anna A1 - Plank, Tina A1 - Greenlee, Mark W. T1 - FMRI evidence for perceptual filling-in in patients with macular dystrophy JF - Perception Y1 - 2013 UR - https://www.researchgate.net/publication/298247764_FMRI_evidence_for_perceptual_filling-in_in_patients_with_macular_dystrophy SN - 1468-4233 SN - 0301-0066 VL - 42 SP - 72 EP - 73 ER - TY - JOUR A1 - Plank, Tina A1 - Rosengarth, Katharina A1 - Schmalhofer, Carolin A1 - Goldhacker, Markus A1 - Brandl-Rühle, Sabine A1 - Greenlee, Mark W. T1 - Perceptual learning in patients with macular degeneration JF - Frontiers in psychology N2 - Patients with age-related macular degeneration (AMD) or hereditary macular dystrophies (JMD) rely on an efficient use of their peripheral visual field. We trained eight AMD and five JMD patients to perform a texture-discrimination task (TDT) at their preferred retinal locus (PRL) used for fixation. Six training sessions of approximately one hour duration were conducted over a period of approximately 3 weeks. Before, during and after training twelve patients and twelve age-matched controls (the data from two controls had to be discarded later) took part in three functional magnetic resonance imaging (fMRI) sessions to assess training-related changes in the BOLD response in early visual cortex. Patients benefited from the training measurements as indexed by significant decrease (p = 0.001) in the stimulus onset asynchrony (SOA) between the presentation of the texture target on background and the visual mask, and in a significant location specific effect of the PRL with respect to hit rate (p = 0.014). The following trends were observed: (i) improvement in Vernier acuity for an eccentric line-bisection task; (ii) positive correlation between the development of BOLD signals in early visual cortex and initial fixation stability (r = 0.531); (iii) positive correlation between the increase in task performance and initial fixation stability (r = 0.730). The first two trends were non-significant, whereas the third trend was significant at p = 0.014, Bonferroni corrected. Consequently, our exploratory study suggests that training on the TDT can enhance eccentric vision in patients with central vision loss. This enhancement is accompanied by a modest alteration in the BOLD response in early visual cortex. KW - perceptual learning KW - fMRI BOLD KW - cortical plasticity KW - visual cortex KW - macular degeneration Y1 - 2014 U6 - https://doi.org/10.3389/fpsyg.2014.01189 SN - 1664-1078 VL - 5 SP - 1 EP - 14 PB - Frontiers Research Foundation CY - Lausanne ER - TY - JOUR A1 - Greenlee, Mark W. A1 - Rosengarth, Katharina A1 - Schmalhofer, Caroline A1 - Goldhacker, Markus A1 - Brandl-Rühle, Sabine A1 - Plank, Tina T1 - Perceptual learning in patients with central scotomata due to hereditary and age-related macular dystrophy JF - Journal of Vision N2 - Hereditary and age-related forms of macular dystrophy (MD) are characterized by loss of cone function in the fovea, leading to central scotomata and eccentric fixation at the so-called preferred retinal locus (PRL). We investigated whether perceptual learning enhances visual abilities at the PRL. We also determined the neural correlates (3-Tesla fMRI) of learning success. Twelve MD patients (eight with age-related macular dystrophy, four with hereditary macular dystrophies) were trained on a texture discrimination task (TDT) over six days. Patients underwent three fMRI sessions (before, during and after training) while performing the TDT (target at PRL or opposite PRL). Reading speed, visual acuity (Vernier task) and contrast sensitivity were also assessed before and after training. With one exception, all patients showed improved performance (i.e. significant decrease in stimulus onset asynchronies and reaction times, significant increase in hit rates) on the TDT. Eight patients also showed moderate increases in reading speed, six patients showed improved thresholds in contrast sensitivity and nine patients showed improved thresholds in a vernier visual acuity task after TDT training. We found an increase in BOLD response in the projections zone of the PRL in the primary visual cortex in nine of twelve patients after training. The change in fMRI signal correlated (r = .8; p = .02) with the patients’ performance enhancements when the target was in the PRL. The results suggest that perceptual learning can enhance eccentric vision and cortical processing in MD patients. Y1 - 2014 U6 - https://doi.org/10.1167/14.10.666 SN - 1468-4233 SN - 0301-0066 VL - 14 IS - 10 PB - ARVO ER - TY - JOUR A1 - Haumer, Anton A1 - Kral, Christian A1 - Vukovic, Vladimir A1 - David, Alexander A1 - Hettfleisch, Christian A1 - Huzsvar, Attila T1 - A Parametrization Scheme for High Performance Thermal Models of Electric Machines using Modelica JF - IFAC Proceedings Volumes N2 - Thermal models offer great advantages for enhancement of design, protection and control of electric machines. Detailed thermal models take a great number of time constants into account and provide accurate prediction of the temperatures. However, to parameterize such models detailed geometric data are needed. Whenever such detailed information is not available, or the performance of the detailed models is not satisfying, simplified thermal models as described in this paper are advantageous. The calculation of parameters is described in detail, in order to achieve best accordance with temperatures obtained from measurements or from simulations with detailed thermal models. Thermal resistances are calculated from end temperatures of a test run with constant load (and known losses). Thermal capacitances are obtained using optimization to minimize deviation of simulated and measured temperatures during the whole test run. The thermal model of an asynchronous induction machine with squirrel cage is coupled with an electrical model of the drive. For validation, simulation results of an optimally parameterized simplified model are compared with temperatures obtained by simulation of a detailed thermal model, which in turn has been validated against measurement results, both for continuous duty S1 and intermittent duty S6 (6 minutes no-load followed by 4 minutes of 140% nominal load). The deviations are not more than 4 K which is quite satisfying. KW - Electric machines KW - Induction machines KW - Thermal models KW - Model reduction KW - Parameter identification KW - Parameter optimization Y1 - 2012 U6 - https://doi.org/10.3182/20120215-3-AT-3016.00187 SN - 1474-6670 VL - 45 IS - 2 SP - 1058 EP - 1062 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Kral, Christian A1 - Haumer, Anton A1 - Haigis, Matthias A1 - Lang, Hermann A1 - Kapeller, Hansjörg T1 - Comparison of a CFD Analysis and a Thermal Equivalent Circuit Model of a TEFC Induction Machine With Measurements JF - IEEE Transactions on Energy Conversion N2 - For a totally enclosed fan-cooled induction machine, two methods of numerical analysis are compared with measurements. The first numerical method is based on computational fluid dynamics (CFDs) and the second one uses a thermal equivalent circuit (TEC). For the analysis based on CFD, a 3-D induction machine including housing is modeled. The numeric solution of the flow equations is determined for stationary temperature distributions. For the TEC, a discretized one-and-a-half-dimensional model of the induction machine is considered. With the TEC model, stationary and transient operating conditions can be simulated. Measurement results are determined by iron-copper-nickel sensors embedded in the stator winding and the housing, as well as by an IR sensor for measuring the rotor temperature. With these measurement signals, stationary and transient operating conditions can be analyzed. For stationary operating conditions, additionally, the housing temperatures are determined by an IR camera. The investigated simulation and measurement methods reveal different local and global temperatures, and thus, only certain aspects and characteristics of the obtained temperatures can be compared. Nevertheless, certain conclusions can be drawn from comparing these aspects considering the actual restrictions of each of the applied methods. KW - asynchronous machines KW - computational fluid dynamics KW - electric sensing devices KW - Fluid flow KW - induction machines KW - numerical analysis KW - simulation KW - temperature Y1 - 2009 U6 - https://doi.org/10.1109/TEC.2009.2025428 SN - 0885-8969 VL - 24 IS - 4 SP - 809 EP - 818 PB - IEEE ER - TY - JOUR A1 - Storath, Martin A1 - Weinmann, Andreas A1 - Frikel, Jürgen A1 - Unser, Michael T1 - Joint image reconstruction and segmentation using the Potts model JF - Inverse Problems N2 - We propose a new algorithmic approach to the non-smooth and non-convex Potts problem (also called piecewise-constant Mumford–Shah problem) for inverse imaging problems. We derive a suitable splitting into specific subproblems that can all be solved efficiently. Our method does not require a priori knowledge on the gray levels nor on the number of segments of the reconstruction. Further, it avoids anisotropic artifacts such as geometric staircasing. We demonstrate the suitability of our method for joint image reconstruction and segmentation. We focus on Radon data, where we in particular consider limited data situations. For instance, our method is able to recover all segments of the Shepp–Logan phantom from seven angular views only. We illustrate the practical applicability on a real positron emission tomography dataset. As further applications, we consider spherical Radon data as well as blurred data. Y1 - 2015 U6 - https://doi.org/10.1088/0266-5611/31/2/025003 SN - 0266-5611 SN - 1361-6420 VL - 31 IS - 2 PB - IOP Publishing CY - Bristol ER - TY - JOUR A1 - Kral, Christian A1 - Kapeller, Hansjörg A1 - Gragger, Johannes V. A1 - Haumer, Anton A1 - Kubicek, Bernhard T1 - Phenomenon Rotor Fault-Multiple Electrical Rotor Asymmetries in Induction Machines JF - IEEE Transactions on Power Electronics N2 - In the literature, the effects caused by a single or several adjacently broken rotor bars, or a broken end ring are thoroughly investigated. The phenomenon of various nonadjacently broken rotor bars has not been studied so far in detail. Since nonadjacently broken rotor bars may give rise to fault signatures, which are not directly related with the fault extent, it is important to understand the nature of multiple electrical rotor asymmetries in induction machines. The purpose of this paper is thus to investigate several combinations of electrical rotor asymmetries, to systematically elaborate the phenomena related to the broken bars and end rings. In this paper, a sophisticated simulation model and measurement results are used to analyze the phenomenon rotor fault. KW - asynchronous machines KW - Electrical rotor asymmetries KW - induction machine KW - rotor fault KW - Rotors KW - simulation model KW - skewing Y1 - 2010 U6 - https://doi.org/10.1109/TPEL.2009.2037502 SN - 0885-8993 SN - 1941-0107 VL - 25 IS - 5 SP - 1124 EP - 1134 PB - IEEE ER - TY - CHAP A1 - Ebner, Arno A1 - Haumer, Anton A1 - Simic, Dragan A1 - Pirker, Franz T1 - Interacting Modelica using a Named Pipe for Hardware-in-the-loop Simulation T2 - Modelica 2006, Conference proceedings / 5th International Modelica Conference : September 4 - 5, 2006, Vienna, Austria N2 - The paper presents a concept and an implementation of Modelica simulation interaction using the operating system inter-process communication method of the Named Pipe. The main aim of this presented work is to implement a hardware-in-the-loop simulation (HILS) environment based on Dymola which runs on a normal Microsoft Windows Personal Com-puter. An energy storage test bench is connected by an ana-logue and digital data input/output card with the Dymola simulation computer. With this proposed system, particularly long-time simulations with sample rates up to 30 Hz can be executed very cost effective. Typical applications are simulations of drive cycles to test energy storage systems in electrified vehicles such as batteries or fuel cells. Other application ex-amples are the verification of battery models, thermal management models or battery management sys-tem (BMS) models. In this paper all methods used for implementation are described in detail. Especially the concept of inter-process communication and the concept for real-time and simulation time synchronization is discused. An application example which uses the provided concept is also shown at in this paper. In this example a longitudinal simulation of a vehicle is pre-sented. The startup phase of the internal combusting engine model and a short drive cycle in combination with a connected real battery is shown. Y1 - 2006 UR - https://modelica.org/events/modelica2006/Proceedings/sessions/Session3b1.pdf SP - 261 EP - 266 ER - TY - JOUR A1 - Wieczorek, Matthias A1 - Frikel, Jürgen A1 - Vogel, Jakob A1 - Eggl, Elena A1 - Kopp, Felix A1 - Noël, Peter B. A1 - Pfeiffer, Franz A1 - Demaret, Laurent A1 - Lasser, Tobias T1 - X-ray computed tomography using curvelet sparse regularization JF - Medical physics N2 - PURPOSE Reconstruction of x-ray computed tomography (CT) data remains a mathematically challenging problem in medical imaging. Complementing the standard analytical reconstruction methods, sparse regularization is growing in importance, as it allows inclusion of prior knowledge. The paper presents a method for sparse regularization based on the curvelet frame for the application to iterative reconstruction in x-ray computed tomography. METHODS In this work, the authors present an iterative reconstruction approach based on the alternating direction method of multipliers using curvelet sparse regularization. RESULTS Evaluation of the method is performed on a specifically crafted numerical phantom dataset to highlight the method's strengths. Additional evaluation is performed on two real datasets from commercial scanners with different noise characteristics, a clinical bone sample acquired in a micro-CT and a human abdomen scanned in a diagnostic CT. The results clearly illustrate that curvelet sparse regularization has characteristic strengths. In particular, it improves the restoration and resolution of highly directional, high contrast features with smooth contrast variations. The authors also compare this approach to the popular technique of total variation and to traditional filtered backprojection. CONCLUSIONS The authors conclude that curvelet sparse regularization is able to improve reconstruction quality by reducing noise while preserving highly directional features. Y1 - 2015 U6 - https://doi.org/10.1118/1.4914368 SN - 0094-2405 SN - 2473-4209 VL - 42 IS - 4 SP - 1555 EP - 1565 PB - American Association of Physicists in Medicine ER - TY - CHAP A1 - Bäuml, T. A1 - Haumer, Anton A1 - Kapeller, H. A1 - Starzinger, J. A1 - Farzi, P. T1 - Impact of inverter pulse inhibition on the high-voltage supply system of an electric vehicle — A simulative approach T2 - 2011 IEEE Vehicle Power and Propulsion Conference (VPPC 2011) : Powering sustainable transportation ; Chicago, Illinois, USA, 06. - 09.09.2011 N2 - This paper deals with a simulative approach for investigating the impact of inverter pulse inhibition during field weakening operation of permanent magnet synchronous machines and asynchronous induction machines. The modelling and simulation language Modelica is used to design models for the vehicle, the electric machine and the inverter in different abstraction levels. It is shown that when using a permanent magnet synchronous machine, a sudden breakdown of the field weakening current causes induction of high voltages in the stator windings. Hence, the electric system of the vehicle has to be protected against the resulting high currents. Furthermore precautions have to be taken to avoid dangerous driving conditions because of high braking torques in an inverter fault operation mode. In the case of the asynchronous induction machine an inverter pulse inhibition poses no big problem, neither for the electric system of the vehicle, nor the driver. KW - asynchronous machines KW - Connectors KW - electric vehicles KW - Inverters KW - invertors KW - Mathematical model KW - Object oriented modeling KW - permanent magnet machines KW - power engineering computing KW - Rotors KW - synchronous machines KW - Torque KW - Vehicles Y1 - 2011 SN - 978-1-61284-248-6 SN - 978-1-61284-247-9 SN - 978-1-61284-246-2 U6 - https://doi.org/10.1109/VPPC.2011.6043159 SP - 1 EP - 5 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Bogomolov, Maxim A1 - Kral, Christian A1 - Haumer, Anton A1 - Lomonova, Elena T1 - Modeling of permanent magnet synchronous machine with fractional slot windings T2 - Proceedings IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society ; Ecole de Technologie Superieure de Montreal, Universite du Quebec Montreal, Canada 25 - 28 October, 2012 N2 - This paper focuses on simulation of permanent magnet synchronous machine (PMSM) with fractional-slot windings (FSW) in Modelica. Modeling of the electrical machines with object-oriented approach is shortly described, and a new Modelica library for simulation of electrical machines is introduced. The results of simulation of PMSMs with fractional slot windings are presented and explained. Special attention is paid to the higher harmonics and subharmonics produced by the winding and their influence on machine operation. KW - Concentrated KW - fractional slot KW - harmonics KW - Modelica KW - permanent magnet KW - subharmonics KW - synchronous machines KW - Torque KW - windings Y1 - 2012 SN - 978-1-4673-2421-2 SN - 978-1-4673-2419-9 SN - 978-1-4673-2420-5 U6 - https://doi.org/10.1109/IECON.2012.6388912 SN - 1553-572X SP - 1894 EP - 1899 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Wieczorek, Matthias A1 - Frikel, Jürgen A1 - Vogel, Jakob A1 - Pfeiffer, Franz A1 - Demaret, Laurent A1 - Lasser, Tobias T1 - Curvelet sparse regularization for differential phase-contrast X-ray imaging T2 - Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine : Proceedings ; June 16-21, 2013, Granlibakken Resort, Lake Tahoe, California N2 - Differential phase contrast imaging (DPCI) enables the visualization of soft tissue contrast using X-rays. In this work we introduce a reconstruction framework based on curvelet expansion and sparse regularization for DPCI. We will show that curvelets provide a suitable data representation for DPCI reconstruction that allows preservation of edges as well as an exact analytic representation of the system matrix. As a first evaluation, we show results using simulated phantom data Y1 - 2013 UR - https://www.researchgate.net/publication/255913330_Curvelet_sparse_regularization_for_differential_phase-contrast_X-ray_imaging SP - 489 EP - 492 ER - TY - GEN A1 - Frikel, Jürgen T1 - Adapted curvelet sparse regularization in limited angle tomography T2 - Summer School: New Trends and Directions in Harmonic Analysis, Fractional Operator Theory, and Image Analysis, Inzell, Germany, September 17 - 21, 2012 Y1 - 2012 UR - https://www.fim.uni-passau.de/fileadmin/dokumente/fakultaeten/fim/lehrstuhl/forster-heinlein/Inzell2012/Inzell_Frikel_2012_small.pdf ER - TY - CHAP A1 - Goldhacker, Markus A1 - Tomé, Ana Maria A1 - Greenlee, Mark W. A1 - Lang, Elmar W. T1 - Early meta-level: deeper understanding of connectivity-states and consequences for state definition T2 - 21st Annual Meeting of the Organization for Human Brain Mapping, June 14-18, 2015, Honolulu, Hawaii Y1 - 2015 U6 - https://doi.org/10.13140/RG.2.1.2561.3929 PB - Academic Press CY - San Diego, CA ER - TY - VIDEO A1 - Al-Subari, Karema A1 - Al-Baddai, Saad A1 - Tomé, Ana Maria A1 - Goldhacker, Markus A1 - Faltermeier, Rupert A1 - Lang, Elmar Wolfgang T1 - EMDLAB-toolbox- tutorial video Y1 - 2015 UR - https://www.researchgate.net/publication/280492172_EMDLAB-toolbox-_tutorial_video ER - TY - CHAP A1 - Hong, Jongman A1 - Hyun, Doosoo A1 - Kang, Tae-june A1 - Lee, Sang Bin A1 - Kral, Christian A1 - Haumer, Anton T1 - Detection and classification of rotor demagnetization and eccentricity faults for PM synchronous motors T2 - 2011 IEEE Energy Conversion Congress and Exposition (ECCE 2011) : Energy conversion innovation for a clean energy future ; Phoenix, Arizona, USA, 17.-22.09.2011 N2 - Condition monitoring of rotor problems such as demagnetization and eccentricity in permanent magnet synchronous motors (PMSM) is essential for guaranteeing high motor performance, efficiency, and reliability. However, there are many limitations to the off-line and on-line methods currently used for PMSM rotor quality assessment. In this paper, an inverter-embedded technique for automated detection and classification of PMSM rotor faults is proposed as an alternative. The main concept is to use the inverter to perform a test whenever the motor is stopped, to detect rotor faults independent of operating conditions or load torque oscillations, which is not possible with motor current signature analysis (MCSA). The d-axis is excited with a dc+ac signal, and the variation in the inductance pattern due to the change in the degree of magnetic saturation caused by demagnetization or eccentricity is observed for fault detection. An experimental study on a 7.5kW PMSM verifies that demagnetization and eccentricity can be detected and classified independent of the load with high sensitivity. KW - AC Machine KW - Condition Monitoring KW - d-axis Inductance KW - Demagnetization KW - Eccentricity KW - fault diagnosis KW - invertors KW - Magnetic Saturation KW - Permanent Magnet (PM) KW - permanent magnet motors KW - Synchronous Motor (SM) KW - synchronous motors Y1 - 2011 SN - 978-1-4577-0542-7 SN - 978-1-4577-0541-0 SN - 978-1-4577-0540-3 U6 - https://doi.org/10.1109/ECCE.2011.6064103 SN - 2329-3721 SN - 2329-3748 SP - 2512 EP - 2519 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Hong, Jongman A1 - Lee, Sang Bin A1 - Kral, Christian A1 - Haumer, Anton T1 - Detection of airgap eccentricity for permanent magnet synchronous motors based on the d-axis inductance T2 - 8th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics & Drives (SDEMPED), 2011 // 05. - 08.09.2011, Bologna, Italy N2 - The majority of the work performed for detecting eccentricity faults for permanent magnet synchronous motors (PMSM) focus on motor current signature analysis (MCSA), as it provides continuous on-line monitoring with existing current sensors. However, MCSA cannot be applied under nonstationary conditions and cannot distinguish faults with load torque oscillations, which are limitations for many PMSM drive applications. In this paper, it is shown that the d-axis inductance, L d , decreases with increase in the severity of eccentricity due to the change in the degree of magnetic saturation, and it is proposed as a new fault indicator. The inverter can be used to perform a standstill test automatically whenever the motor is stopped, to measure L d for eccentricity testing independent of load variations or oscillations, which is not possible with MCSA. An FE and experimental study on a 10hp PMSM verifies that eccentricity can be detected independent of the load with high sensitivity and reliability. KW - Airgap Eccentricity KW - Condition Monitoring KW - Diagnostics KW - fault location KW - inductance KW - load (electric) KW - machine testing KW - Magnetic Saturation KW - Motor Current Signature Analysis (MCSA) KW - permanent magnet motors KW - Permanent Magnet Synchronous Motor KW - synchronous motor protection Y1 - 2011 SN - 978-1-4244-9301-2 SN - 978-1-4244-9303-6 U6 - https://doi.org/10.1109/DEMPED.2011.6063651 SP - 378 EP - 384 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Haumer, Anton A1 - Kral, Christian T1 - Modeling a Mains connected PWM Converter with Voltage-Oriented Control T2 - Proceedings of the 8th International Modelica Conference, Technical Univeristy, Dresden, Germany, 20.-22.03.2011 N2 - The majority of industrial controlled induction machine drives are connected to the mains via a diode bridge. However; if reduction of harmonic currents and / or regenerative operation is desired; replacing the diode bridge by an active front-end (AFE) is required. This paper describes two models of an AFE: a power balance model disregarding switching effects; and an ideal switching model of a pulse width modulation (PWM) converter. Both models are controlled utilizing space phasors in a voltage oriented reference frame. Voltage oriented control (VOC) of the mains converter can be compared with field oriented control (FOC) of a machine converter. Design and parametrization of the main parts—synchronization with mains voltage; current controller and DC voltage controller—are described in detail. Additionally; simulation results proving the implementation and demonstrating possible investigations as well as an outlook on further enhancements are presented. KW - Active Front-End KW - PWM Converter KW - Voltage-Oriented Control Y1 - 2011 U6 - https://doi.org/10.3384/ecp11063388 SP - 388 EP - 397 PB - Linköping University Electronic Press ER - TY - CHAP A1 - Jungreuthmayer, C. A1 - Bauml, T. A1 - Winter, O. A1 - Ganchev, M. A1 - Kapeller, H. A1 - Haumer, Anton A1 - Kral, Christian T1 - Heat and fluid flow analysis of an internal permanent magnet synchronous machine by means of computational fluid dynamics T2 - 2011 IEEE International Electric Machines & Drives Conference (IEMDC 2011) ; Niagara Falls, Ontario, Canada, 15 - 18 May 2011 N2 - This paper presents a comprehensive computational fluid (CFD) model of a radial flux permanent magnet synchronous machine with interior magnets. In the CFD model the water jacket cooling and a simplified model of the topology of the distributed stator winding are considered. The heat sources of the CFD model are determined from a finite element analysis of the machine. The numerically determined temperature distributions of the machine are compared with measurement results from sensors located both in the stator and rotor. The particular focus of this paper is the analysis of the temperatures and the heat flow in the air gap and from the stator winding head and the rotor to the inner air. KW - CFD KW - computational fluid dynamics KW - Cooling KW - finite element analysis KW - interior magnet KW - permanent magnet machines KW - permanent magnet synchronous machine KW - Rotors KW - sensor placement KW - stators KW - synchronous machines KW - temperature KW - temperature distribution KW - thermal analysis Y1 - 2011 SN - 978-1-4577-0060-6 SN - 978-1-4577-0061-3 SN - 978-1-4577-0059-0 U6 - https://doi.org/10.1109/IEMDC.2011.5994651 SP - 515 EP - 520 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Haumer, Anton A1 - Kral, Christian ED - Otter, Martin ED - Zimmer, Dirk T1 - Motor Management of Permanent Magnet Synchronous Machines T2 - Proceedings of the 9th International MODELICA Conference; September 3-5; 2012; Munich; Germany N2 - Two state-of-the-art machine designs are mainly used in recent electric and hybrid electric vehicles: asynchronous induction machines with squirrel cage which are robust but need a current component to excite the magnetic field; and permanent magnet synchronous machines which rely on somehow more sensible parts but the magnets are able to excite a magnetic field without current. However; if speed gets high enough to reach the field weakening range; for both machine the field oriented control has to prescribe a field current sufficient to reduce the field not to exceed the voltage limits of the stator circuit. Especially for the permanent magnet synchronous machine this paper investigates whether it is possible to determine an optimal field current for every operation point to minimize either total current consumption or losses. KW - Field Oriented Control KW - Optimization of Field Current KW - permanent magnet synchronous machine Y1 - 2012 SN - 978-91-7519-826-2 U6 - https://doi.org/10.3384/ecp12076159 SN - 1650-3686 SN - 1650-3740 SP - 159 EP - 166 PB - Linköping University Electronic Press ER - TY - CHAP A1 - Frikel, Jürgen T1 - A new framework for sparse regularization in limited angle x-ray tomography T2 - 2010 7th IEEE International Symposium on Biomedical Imaging: From Nano to Macro ; Rotterdam 14.04.2010 - 17.04.2010 N2 - We propose a new framework for limited angle tomographic reconstruction. Our approach is based on the observation that for a given acquisition geometry only a few (visible) structures of the object can be reconstructed reliably using a limited angle data set. By formulating this problem in the curvelet domain, we can characterize those curvelet coefficients which correspond to visible structures in the image domain. The integration of this information into the formulation of the reconstruction problem leads to a considerable dimensionality reduction and yields a speedup of the corresponding reconstruction algorithms. KW - computerised tomography KW - curvelet transforms KW - Curvelets KW - Dimensionality reduction KW - image reconstruction KW - limited angle tomography KW - medical image processing KW - sparse matrices KW - Sparse regularization KW - wavefront set Y1 - 2010 SN - 978-1-4244-4125-9 U6 - https://doi.org/10.1109/ISBI.2010.5490113 SN - 1945-7928 SP - 824 EP - 827 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Kapeller, Hansjörg A1 - Haumer, Anton A1 - Kral, Christian A1 - Grabner, Christian ED - Ao, Sio-Iong ED - Gelman, Len T1 - Different Designs of Large Chipper Drives T2 - Electronic Engineering and Computing Technology N2 - This paper presents two simulation models for two variants of a large chipper drive used in a paper mill. If a slip ring induction motor is used, the impact of a rotor circuit rheostat with respect to starting behavior and heavy duty load impulses can be examined. Furthermore a speed controlled squirrel cage induction machine will be investigated. The modeling language for both drives is Modelica. The simulation results for both drives are compared and discussed. KW - induction motor KW - load impulses KW - slip ring KW - speed control KW - squirrel cage Y1 - 2010 SN - 978-90-481-8775-1 SN - 978-90-481-8776-8 U6 - https://doi.org/10.1007/978-90-481-8776-8_9 SP - 93 EP - 104 PB - Springer CY - Dordrecht ER - TY - CHAP A1 - Kral, Christian A1 - Haumer, Anton A1 - Bogomolov, Maxim A1 - Lomonova, Elena T1 - Harmonic wave model of a permanent magnet synchronous machine for modeling partial demagnetization under short circuit conditions T2 - 2012 XXth International Conference on Electrical Machines (ICEM 2012) ; Marseille, France, 2 - 5 September 2012 N2 - This paper proposes a multi domain physical model of permanent magnet synchronous machines, considering electrical, magnetic, thermal and mechanical effects. For each component of the model, the main wave as well as lower and higher harmonic wave components of the magnetic flux and the magnetic potential difference may be considered. The permanent magnets are modeled as discrete azimuthal segments in order to consider possible partial demagnetization effects. For each magnet segment a linearized temperature dependent B-H curve is considered. The main advantage of the presented model is that time transient operational behavior of a permanent magnet synchronous machine can be considered under various electrical, magnetic, thermal and mechanical conditions. The electromagnetic condition of surface magnet machine is compared with finite element analysis. KW - demagnetization KW - harmonic analysis KW - magnetic fields KW - magnetic flux KW - magnetic potential difference KW - permanent magnet synchronous machine KW - reluctance KW - segmentation KW - temperature Y1 - 2012 SN - 978-1-4673-0142-8 U6 - https://doi.org/10.1109/ICElMach.2012.6349880 SP - 295 EP - 301 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Kral, Christian A1 - Haumer, Anton A1 - Lee, Sang Bin T1 - Robust thermal model for the estimation of rotor cage and stator winding temperatures of induction machines T2 - 2012 XXth International Conference on Electrical Machines ; Marseille, France, 02.- 05.09.2012 N2 - In this paper a new model for the estimation of the stator winding and rotor cage temperatures of induction machines is presented. This model can be used in series applications of machines operated under dynamic load conditions where stator and rotor temperature shall be monitored. The proposed model relies on a simplified lumped element thermal equivalent circuit model where the stator core temperature serves as input quantity. The great advantage of this model is that it covers ambient and cooling conditions inherently. This leads to great simplicity and robustness. The parametrization and validation of the model through experimental data is presented. Advantages, drawbacks and possible implementations are discussed. KW - asynchronous machines KW - Cooling KW - dynamic load KW - equivalent circuits KW - lumped element thermal equivalent circuit model KW - Rotors KW - squirrel cage induction machine KW - stators KW - temperature estimation Y1 - 2012 SN - 978-1-4673-0142-8 SN - 978-1-4673-0143-5 SN - 978-1-4673-0141-1 U6 - https://doi.org/10.1109/ICElMach.2012.6350127 SP - 1810 EP - 1816 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Kral, Christian A1 - Haumer, Anton A1 - Lee, Sang Bin T1 - Innovative thermal model for the estimation of permanent magnet and stator winding temperatures T2 - 2012 IEEE Energy Conversion Congress and Exposition (ECCE 2012) ; Raleigh, NC, USA 15.09.-20.09.2012 N2 - In this paper an innovative thermal model for the determination of the temperatures of the permanent magnets and stator windings is presented. This model relies on one temperature sensor located in the stator core of the machine. The estimated stator winding and permanent magnet temperatures are determined by a simplified thermal lumped element network model with only two time constants. Due to the structure of the model and the measured stator core temperature the proposed thermal model is very robust. Distortion of the cooling circuit are inherently sensed such that the model can be used for the online prediction of temperatures. Experimental results based on an interior permanent magnet synchronous machine are presented to validate the presented model. KW - Cooling KW - dynamic load KW - lumped element thermal equivalent circuit model KW - permanent magnet machines KW - permanent magnet synchronous machine KW - stators KW - synchronous machines KW - temperature estimation KW - temperature sensors KW - variable speed Y1 - 2012 SN - 978-1-4673-0803-8 SN - 978-1-4673-0802-1 SN - 978-1-4673-0801-4 U6 - https://doi.org/10.1109/ECCE.2012.6342386 SN - 2329-3721 SN - 2329-3748 SP - 2704 EP - 2711 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Kral, Christian A1 - Haumer, Anton T1 - The New FundamentalWave Library for Modeling Rotating Electrical Three Phase Machines T2 - Proceedings of the 8th International Modelica Conference; March 20th-22nd; Technical Univeristy; Dresden; Germany N2 - This paper introduces the new FundemantalWave library which is included in the Modelica Standard Library 3.2. The presented Modelica package provides models and components of rotating electrical three phase machines. The presented electrical machine models are fully compatible with the original Machines library of the electrical domain but rely on the concept of the magnetic potential and magnetic flux fundamental waves. In this article; the connector concept; the components and electric machine models of the FundemantalWave package will be explained. Additionally; the didactic advantages and the flexibility of the proposed package in with respect to considering more enhanced and sophisticated effects will be discussed. KW - fundamental wave KW - Modelica Standard Library MSL KW - Rotating electrical three phase machines KW - time transients Y1 - 2011 SN - 978-91-7393-096-3 U6 - https://doi.org/10.3384/ecp11063170 SN - 1650-3686 SN - 1650-3740 SP - 170 EP - 179 PB - University Electronic Press CY - Linköping ER - TY - CHAP A1 - Kral, Christian A1 - Haumer, Anton A1 - Grabner, Christian ED - Ao, Sio-Iong ED - Gelman, Len T1 - Determination of Consistent Induction Motor Parameters T2 - Electronic Engineering and Computing Technology N2 - From the rating plate data of an induction motor the nominal efficiency can be determined. Without detailed knowledge of equivalent circuit parameters, partial load behavior cannot be computed. Therefore, a combined calculation and estimation scheme is presented, where the consistent parameters of an equivalent circuit are elaborated, exactly matching the nominal operating point. From these parameters part load efficiencies can be determined. KW - consistent parameters KW - iduction motor KW - partial load efficiency Y1 - 2010 SN - 978-90-481-8775-1 SN - 978-90-481-8776-8 U6 - https://doi.org/10.1007/978-90-481-8776-8_7 VL - 60 SP - 71 EP - 80 PB - Springer CY - Dordrecht ER - TY - CHAP A1 - Kral, Christian A1 - Haumer, Anton A1 - Grabner, Christian ED - Ao, Sio-Iong ED - Gelman, Len T1 - Broken Rotor Bars in Squirrel Cage Induction Machines – Modeling and Simulation T2 - Electronic Engineering and Computing Technology N2 - This paper presents a physical model of a squirrel cage induction machine with rotor topology. The machine is modeled in Modelica, an object oriented multi physical modeling system. The presented machine model is used to investigate electrical rotor asymmetries in induction machines. For the case of a single broken rotor bar a simulation model is compared with measurement results. KW - broken rotor bar KW - induction machines KW - Modelica KW - rotor asymmetries KW - squirrel cage Y1 - 2010 SN - 978-90-481-8775-1 SN - 978-90-481-8776-8 U6 - https://doi.org/10.1007/978-90-481-8776-8_8 SP - 81 EP - 91 PB - Springer CY - Dordrecht ER - TY - CHAP A1 - Kral, Christian A1 - Haumer, Anton ED - Schmidt, Matthias T1 - Object Oriented Modeling of Rotating Electrical Machines T2 - Advances in Computer Science and Engineering Y1 - 2011 SN - 978-953-307-173-2 SN - 978-953-51-5990-2 U6 - https://doi.org/10.5772/15898 SP - 135 EP - 160 PB - IntechOpen ER - TY - GEN A1 - Groneck, Christoph T1 - Erfolgsfaktoren der rezenten Stadtbahnneubauprojekte in Frankreich T2 - VDEI Expertenforum: Schwerpunktthema Stadtbahn-Neubau, 13. Oktober 2022, OTH Regensburg N2 - Seit Mitte der 1980er Jahre werden in Frankreich mit großem Erfolg neue oberirdische Straßenbahnsysteme realisiert, nachdem das Verkehrssystem Straßenbahn vormals landesweit nahezu vollständig verschwunden war. Kennzeichnend für die Projekte sind eine meist komplette Neuordnung städtischer Verkehrsstrukturen sowie eine integrierte Betrachtung von Stadtgestaltung und Verkehrsanlagenbau. Der Vortrag zeichnet die Entwicklungsgeschichte der neuen Systeme sowie deren Planungsleitbilder und Erfolgsfaktoren nach. Y1 - 2022 UR - https://doi.org/10.35096/othr/pub-5558 CY - Regensburg ER - TY - GEN A1 - Schönherr, Sandra T1 - Netzkonzeption Busverkehre im Rahmen des Projekts Stadtbahn Regensburg T2 - VDEI Expertenforum: Schwerpunktthema Stadtbahn-Neubau, 13. Oktober 2022, OTH Regensburg N2 - Regensburg steht vor der Herausforderung, den Ansprüchen einer wachsenden Stadt und der nicht zuletzt durch die Entwicklungen im Energiesektor beeinflusste Mobilitätswende mit einem attraktiven und zukunftsfähigen Mobilitätsangebot gerecht zu werden. Die Entscheidung für ein höherwertiges ÖPNV-System - die Stadtbahn - wurde 2018 getroffen. Das Stadtwerk Regensburg.Mobilität GmbH (SMO) mit der Aufgabe betraut, ein funktionsfähiges ÖPNV-Netz zu konzipieren, das die Stadtbahn durch optimierten Stadtbuseinsatz unter den gegebenen infrastrukturellen Rahmenbedingungen ergänzt. Der Vortrag wird die Strategie vorgestellt, mit der die SMO dieses Ziel erreichen wird. Y1 - 2022 UR - https://doi.org/10.35096/othr/pub-5558 CY - Regensburg ER - TY - GEN A1 - Feig, Thomas T1 - Das Projekt Stadtbahn Regensburg T2 - VDEI Expertenforum: Schwerpunktthema Stadtbahn-Neubau, 13. Oktober 2022, OTH Regensburg N2 - Regensburg ist die größte Stadt im süddeutschen Raum, die ihren öffentlichen Personennahverkehr bisher ohne schienengebundenes Verkehrsmittel organisiert. In Beschlüssen des Stadtrates wie dem Leitbild für Energie und Klima, dem aktuellen Stadtentwicklungsplan 2040 und insbesondere mit einem Grundsatzbeschluss aus dem Jahr 2018 ist die Bedeutung des Stadtbahn-Projektes für eine wachsende Stadt und ein nachhaltig ökologisches öffentliches Verkehrssystem dokumentiert. Der Vortrag informiert über die Organisation der Planung, über besondere Herausforderungen und wichtige Meilensteine sowie die erzielten Fortschritte im Projekt. Y1 - 2022 UR - https://doi.org/10.35096/othr/pub-5558 CY - Regensburg ER - TY - GEN A1 - Gewecke, Jochen T1 - Rück- und Vorschau Projektkommunikation Regionalstadtbahn Neckar-Alb T2 - VDEI Expertenforum: Schwerpunktthema Stadtbahn-Neubau, 13. Oktober 2022, OTH Regensburg N2 - Die RegioStadtbahn Neckar-Alb ist ein großes Verkehrsprojekt in der Region Neckar-Alb mit einem künftigen Schienennetz von 198 Kilometern, davon 38 Kilometer neu oder reaktiviert sowie einem Investitionsvolumen von über 1 Milliarde Euro. Ein erstes Modul geht 2022/23 in Betrieb, während die Innenstadtstrecke durch Tübingen durch einen Bürgerentscheid gestoppt wurde, vielleicht aber nur vorübergehend. Der Vortrag skizziert das Gesamtprojekt und stellt den Wahlkampf zum Bürgerentscheid vor. Y1 - 2022 UR - https://doi.org/10.35096/othr/pub-5558 ER - TY - GEN A1 - Steinwede, Frank T1 - Fahrzeugkonzepte für die Stadtbahn Regensburg T2 - VDEI Expertenforum: Schwerpunktthema Stadtbahn-Neubau, 13. Oktober 2022, OTH Regensburg N2 - Die anstehenden Verkehrsaufgaben werden mit ihren besonderen Herausforderungen an das künftige Stadtbahnsystem in Regensburg dargestellt. Diese haben unmittelbare Auswirkungen auf die Rahmenbedingungen, die das künftige Stadtbahnfahrzeug mit seinen Abmessungen zu erfüllen hat. Anhand verschiedener Fahrzeugkonzepte wird der Weg zum Wunschfahrzeugtyp hergeleitet. Y1 - 2022 UR - https://doi.org/10.35096/othr/pub-5558 CY - Regensburg ER - TY - JOUR A1 - Knödler, Christoph T1 - Universität, Repetitorium und der unechte Vertrag zu Lasten Dritter JF - STUD.JUR. Y1 - 1997 IS - 1 SP - 10 EP - 11 PB - Nomos CY - Baden-Baden ER - TY - JOUR A1 - Knödler, Christoph T1 - Sperrgrundstücksklagen als Rechtsmissbrauch? JF - Natur und Recht. Zeitschrift für das gesamte Recht zum Schutz der natürlichen Lebensgrundlagen und der Umwelt Y1 - 2001 IS - 4 SP - 194 EP - 202 PB - Springer CY - Berlin ER - TY - JOUR A1 - Knödler, Christoph T1 - „Mini-Playback-Show“ unreifer Kinder oder maximale Partizipation junger Staatsbürger? JF - Jugendhilfe Y1 - 1996 IS - 5 SP - 270 EP - 280 PB - Luchterhand Verlag CY - Berlin ER - TY - JOUR A1 - Knödler, Christoph T1 - Wahlrecht für Minderjährige - eine gute Wahl? JF - Zeitschrift für Parlamentsfragen - ZParl Y1 - 1996 IS - 4 SP - 553 EP - 571 PB - Westdeutscher Verlag ER - TY - BOOK A1 - Knödler, Christoph T1 - Missbrauch von Rechten, selbstwidersprüchliches Verhalten und Verwirkung im öffentlichen Recht Y1 - 2000 SN - 978-3-658-14540-8 PB - Centaurus CY - Herbolzheim ER - TY - JOUR A1 - Knödler, Christoph T1 - Zur Vermeidung von formalen Fehlern in Klausuren (Nachdruck von JuS 1996) JF - Juristische Schulung - JuS Y1 - 2000 IS - 10 SP - L73 EP - L75 PB - C.H. Beck CY - München ER - TY - JOUR A1 - Knödler, Christoph T1 - Zur Vermeidung von formalen Fehlern in Klausuren (Nachdruck von JuS 1996) JF - Juristische Schulung - JuS Y1 - 2000 IS - 9 SP - L65 EP - L67 PB - C.H. Beck CY - München ER - TY - JOUR A1 - Knödler, Christoph T1 - Zur Korrektur der Korrektur - die Berichtigung schriftlicher juristischer Prüfungsarbeiten JF - Juristische Schulung - JuS Y1 - 1995 IS - 4 SP - 365 EP - 371 PB - C.H. Beck CY - München ER - TY - JOUR A1 - Knödler, Christoph T1 - Föderalismus - Auflösung oder Zukunft der Staatlichkeit? JF - Die Öffentliche Verwaltung - DÖV Y1 - 1997 IS - 15 SP - 635 EP - 637 PB - Kohlhammer Verlag CY - Stuttgart ER - TY - JOUR A1 - Knödler, Christoph A1 - Daubner, Robert T1 - Die gemeindliche Kampfhundesatzung JF - Juristische Arbeitsblätter - JA Y1 - 1993 IS - 8-9 SP - 181 EP - 188 PB - Luchterhand CY - Neuwied ER - TY - JOUR A1 - Knödler, Christoph A1 - Munková, Jindřiška T1 - Osoboní a kapitálové společnosti v Nĕmecku JF - Právní Rozhledy Y1 - 1994 SN - 1210-6410 IS - 6 SP - 197 EP - 202 PB - Beck CY - Praha ER - TY - JOUR A1 - Knödler, Christoph T1 - Zensur im Internet? JF - Jur-PC / CD-ROM digest Y1 - 1996 IS - 7 SP - 257 EP - 266 PB - Boorberg CY - Stuttgart ER - TY - JOUR A1 - Knödler, Christoph T1 - Spółki osobowe i kapitałowe w Niemczech JF - Monitor Prawniczy Y1 - 1993 SN - 1230-6509 IS - 3 SP - 68 EP - 73 PB - Beck CY - Warszawa ER - TY - JOUR A1 - Müller, Jasmin A1 - Schütz, Sandra A1 - Brodersen, Folke T1 - Jugendforschung inklusiv und digital: Möglichkeiten, Voraussetzungen und Grenzen von Gebärdensprachvideos in digitalen Erhebungen JF - Diskurs Kindheits- und Jugendforschung N2 - Durch die voranschreitende Digitalisierung bieten sich neue Ansätze für Designs und Methoden in der Jugendforschung. Mit vielfältigen digitalen Möglichkeiten wachsen auch Chancen für inklusiv angelegte Befragungen. Dieser Beitrag fokussiert exemplarisch gehörlose bzw. hörbeeinträchtigte gebärdensprachige Jugendliche und stellt nach einem theoretischen und empirischen Überblick die Frage, ob und inwieweit diese heterogene Gruppe Jugendlicher durch in digitale Fragebögen implementierte Videos in Gebärdensprache profitieren kann. Anhand zweier kontrastiver Fallvignetten sollen Erfahrungen aus dem Projekt „Inklusive Methoden“ in Bezug auf Möglichkeiten, Voraussetzungen, Herausforderungen und Grenzen digitaler Befragungen mit Gebärdensprachvideos dargestellt und diskutiert werden. KW - Digitale Befragung KW - Gebärdensprachvideos KW - Inklusion KW - Gehörlosigkeit und Hörbeeinträchtigung KW - Jugendforschung Y1 - 2019 U6 - https://doi.org/10.3224/diskurs.v14i3.05 VL - 14 IS - 3 SP - 308 EP - 322 PB - Barbara Budrich CY - Leverkusen ER - TY - JOUR A1 - Knödler, Christoph A1 - Schober, Wilfried T1 - Kein Versicherungsschutz für den Kostenersatz nach Feuerwehreinsätzen bei Verkehrsunfällen? JF - Bayerische Verwaltungsblätter Zeitschrift für öffentliches Recht und öffentliche Verwaltung BayVBl. Y1 - 2002 IS - 18 SP - 545 EP - 549 PB - Richard Boorberg Verlag CY - München ER - TY - JOUR A1 - Knödler, Christoph A1 - Daubner, Robert T1 - Angekündigte Rechtsprechungsänderungen - Die „Annunziationsjudikatur“ des Bundesarbeitsgerichts JF - Betriebs-Berater. Zeitschrift für Recht und Wirtschaft Y1 - 1992 IS - 27 SP - 1861 EP - 1866 PB - Deutscher Fachverlag CY - Stuttgart ER - TY - JOUR A1 - Knödler, Christoph T1 - Terror, Schutz - und Einsatz der Streitkräfte im Innern? JF - Bayerische Verwaltungsblätter. Zeitschrift für öffentliches Recht und öffentliche Verwaltung BayVBl Y1 - 2002 IS - 18 SP - 107 EP - 111 PB - Boorberg CY - München ER - TY - JOUR A1 - Knödler, Christoph A1 - Loos, Claus T1 - Formelle Fehler in öffentlich-rechtlichen Assessorklausuren JF - Juristische Arbeitsblätter - JA Y1 - 2003 IS - 12 SP - 974 EP - 981 PB - Luchterhand CY - Neuwied ER - TY - JOUR A1 - Knödler, Christoph T1 - Kostenersatz für Feuerwehreinsätze bei Verdacht milzbrandverseuchter Postsendungen? JF - BayGTzeitung : Die Zeitschrift des Bayerischen Gemeindestags Y1 - 2002 IS - 4 SP - 102 EP - 103 PB - Bayerischer Gemeindetag CY - München ER - TY - JOUR A1 - Horn, Lars-Christian A1 - Fischer, Uta A1 - Raptis, Georgios A1 - Bilek, Karin A1 - Hentschel, Bettina A1 - Richter, Christine E. A1 - Braumann, Ulf Dietrich A1 - Einenkel, Jens T1 - Pattern of invasion is of prognostic value in surgically treated cervical cancer patients JF - Gynecologic Oncology N2 - Objectives: Different patterns of invasion (representing different grades of tumor cell dissociation) are associated with prognostic outcome in cancer. We evaluated the prognostic value of different patterns of invasion (PI) in cervical carcinomas (CX). Methods: Six hundred eleven surgically treated CX (FIGO IB to IIB) were re-evaluated histologically regarding the PI, using a three-level scoring system. Closed PI was defined as cohesive growth with well-delineated (pushing) borders. In finger-like PI the tumor grows in solid cords/trabecles. Highly dissociative growth in small groups or single cells was defined as spray-like PI. Types of PI were correlated to tumor stage, histo-morphologic factors and prognostic outcome. Results: Sixty percent of the tumors showed a spray-like PI, 30% a finger-like PI and only 7.4% were of the closed type. Spray-like PI showed a significant correlation with advanced stage disease, lymphovascular space involvement, poorly differentiated tumors and pelvic lymph node metastases. Spray-like PI was accompanied by a reduced 5-year overall survival when compared to the finger-like and closed PI (68.7% vs. 80.9% vs. 88.5%; P=0.0004). The prognostic impact of the PI disappeared in node-positive patients (P=0.06) but persisted in patients without pelvic lymph node disease (P=0.03). In multivariate analysis, using COX regression model, the PI represented as independent prognostic factor. Conclusions: Spray-like PI (i.e., highest degree of tumor cell dissociation) is associated with advanced tumor stages, increased rate of recurrency and a reduced overall survival. In separate analysis of patients with and without lymph node metastases, the impact of PI persisted only in node-negative cases as a prognostic factor. KW - Gebärmutterhalskrebs KW - Chirurgie KW - Metastase Y1 - 2006 U6 - https://doi.org/10.1016/j.ygyno.2006.05.046 VL - 103 IS - 3 SP - 906 EP - 911 ER - TY - JOUR A1 - Horn, Lars-Christian A1 - Raptis, Georgios A1 - Fischer, Uta A1 - Hentschel, Bettina A1 - Köhler, U. A1 - Richter, Christine E. A1 - Martin, Rosemarie T1 - CD44-v6 concentrations in carcinoma of the uterine cervix: lack of prognostic significance JF - Archives of Gynecology and Obstetrics N2 - Several kinds of cellular adhesion molecules, like different splicing variants of CD 44, have gained important as prognostic or markers for metastatic disease. Fresh frozen samples from 64 cervical carcinoma (CX) were stored in liquid nitrogen and examined using ELISA-technique, testing the prognostic impact. Normal cervical tissue served as control. CD 44-v6 concentration, was significant elevated in tumor tissue, when compared to the controls (P=0.04). There was no correlation to tumor stage (P=0.61), lymphovascular space involvement (P=0.075) or pelvic lymph node involvement (P=0.81). The CD 44-v6 concentration was not informative regarding recurrence-free and overall survival. Contrary to immunohistochemistry, the quantification of CD 44-v6 using ELISA-technique does not provide any further information. KW - Gebärmutterhalskrebs KW - Antigen CD44 Y1 - 2005 U6 - https://doi.org/10.1007/s00404-005-0039-5 VL - 273 IS - 2 SP - 104 EP - 106 ER - TY - JOUR A1 - Horn, Lars-Christian A1 - Raptis, Georgios A1 - Fischer, Uta A1 - Bilek, Karin T1 - Standardised handling of hysterectomy specimen in cervical cancer – report of over 900 stage pT1b1- to pT2b-tumors JF - Pathology - Research and Practice KW - Gebärmutterhalskrebs KW - Chirurgie KW - Gewebe KW - Gebärmutterentfernung Y1 - 2000 VL - 196 SP - 450 ER - TY - RPRT A1 - Schenkel, Johannes A1 - Albert, Jürgen A1 - Raptis, Georgios T1 - Arbeitskonzept Notfalldatenmanagement KW - Elektronische Gesundheitskarte KW - Notfallmedizin Y1 - 2011 UR - www.bundesaerztekammer.de/downloads/Arbeitskonzept_NFDM_1.051.pdf ER - TY - JOUR A1 - Horn, Lars-Christian A1 - Raptis, Georgios A1 - Martin, Rosemarie T1 - Tumorassoziierte Proteolyse, p53-Immunhistochemie und Zelladhäsion bei primär operierten Zervixkarzinomen JF - Geburtshilfe und Frauenheilkunde KW - Tumorassoziierte Proteolyse KW - Immuncytochemie KW - Zelladhäsion KW - Gebärmutterhalskrebs Y1 - 2000 VL - 60 IS - Suppl. 1 SP - 200 ER - TY - JOUR A1 - Schenkel, Johannes A1 - Albert, Jürgen A1 - Raptis, Georgios A1 - Butz, Norbert ED - Duesberg, Felix T1 - Notfalldatenmanagement auf der elektronischen Gesundheitskarte JF - e-Health KW - Elektronische Gesundheitskarte KW - Notfallmedizin Y1 - 2012 SP - 64 EP - 67 PB - medical future verlag CY - Solingen ER - TY - JOUR A1 - Horn, Lars-Christian A1 - Fischer, Uta A1 - Tannapfel, A. A1 - Kuhn, H. A1 - Hänel, C. A1 - Raptis, Georgios T1 - The role of p53 tumorsuppressorgene in tumor progression in cervical cancer JF - Pathology - Research and Practice KW - Tumorsuppressor-Gen KW - Tumorwachstum KW - Gebärmutterhalskrebs Y1 - 1999 VL - 195 SP - 328 ER - TY - JOUR A1 - Lekakis, J. A1 - Nanas, J. A1 - Prassopoulos, V. A1 - Raptis, Georgios T1 - Cardiac I-123 metaiodobenzylguanidine uptake in predicting early and late mortality in patients with congestive heart failure JF - Circulation (Suppl.) KW - Stauungssuffizienz KW - Radiologische Diagnostik KW - Prognose Y1 - 1997 VL - 96 IS - 8 SP - 2104 ER - TY - JOUR A1 - Schenkel, Johannes A1 - Albert, Jürgen A1 - Raptis, Georgios A1 - Butz, Norbert T1 - Notfalldatensatz: Bessere Unterstützung für den Arzt JF - Deutsches Ärzteblatt KW - Elektronische Gesundheitskarte KW - Notfallmedizin Y1 - 2011 UR - https://www.aerzteblatt.de/pdf.asp?id=89546 VL - 108 IS - 19 SP - A-1046, B-864, C-864 ER - TY - CHAP A1 - Raptis, Georgios T1 - Notfalldaten und Datenerhalt mit der elektronischen Gesundheitskarte. T2 - Tagungsband 22. Smartcard-Workshop 2012 KW - Elektronische Gesundheitskarte KW - Notfallmedizin KW - Datensicherung Y1 - 2012 SP - 166 PB - Fraunhofer-Verlag ER - TY - JOUR A1 - Raptis, Georgios T1 - Kryptographischer Langzeitschutz JF - KES - The Information Security Journal KW - Kryptologie KW - Datensicherung Y1 - 2008 VL - 1 SP - 55 EP - 62 ER - TY - JOUR A1 - Horn, Lars-Christian A1 - Raptis, Georgios A1 - Nenning, Hans T1 - DNA cytometric analysis of surgically treated squamous cell cancer of the uterine cervix, stage pT1b1-pT2b JF - Analytical and quantitative cytology and histology N2 - Objective: To determine the utility of DNA content and DNA-related variables of proliferative activity regarding prognosis in cervical cancer. Study design: DNA image (ICM) andflow cytometry (FCM) were performed to determine the DNA index (DI), 5c-exceeding rate (5c-ER), S-phase fraction (SPF) and proliferation index (PI) in 163 patients with surgically staged pT1b1-pT2b squamous cell cancer of the uterine cervix and treated with primary radical hysterectomy. ICM was performed on imprint cytology, obtained from fresh tumor tissue, which was also used for FCM. Results were analyzed using the chi2 test and Cox regression analysis for risk of pelvic lymph node involvement, tumor recurrence and recurrence-free survival (RFS). Results: ICM was performed on all 163 and FCM on 133 samples. One-third of the tumors showed DNA aneuploidy. Analysis demonstrated prognostic significance of a DI > or = 1.70, with a (70:30) 2.3-fold risk of recurrence (P=.024) and reduced RFS of 10 months (P=.003) in cases of DI > or = 1.70. A high 5c-ER > 11% was associated with pelvic lymph node involvement and decreased RFS (P < or = .04). Significantly more relapses were found in tumors with SPF > 12% (70.8% vs. 29.2%, P=.007). RFS was markedly reduced in tumors with high SPF (52.3 vs. 61.1 months, P=.011). Low proliferative tumors (PI<25%) were associated with lower stage (P=.036) and increased RFS (61.2 vs. 47.1 months, P=.028). In multivariate analysis of clinicopathologic variables (pT category, nodal status, lymphovascular space involvement) and DNA related variables, pelvic lymph node involvement was the only significant predictor of RFS. In patients with nodal involvement, tumors with DI >1.70 were associated with lessfavorable outcomes. Conclusion: DNA-related variables of cell cycle analysis were valuablefor predicting prognosis in cervical cancer patients. Tumors with DI>1.70, 5c-ER >11% and high proliferative activity (SPF>12%, PI>25%) represent a subgroup with a poor prognosis. KW - Gebärmutterhals KW - squamöser Krebs KW - Cytometrie KW - Chirurgie Y1 - 2002 VL - 24 IS - 1 SP - 23 EP - 29 ER - TY - JOUR A1 - Horn, Lars-Christian A1 - Pippig, S. A1 - Raptis, Georgios A1 - Fischer, Uta A1 - Köhler, U. A1 - Hentschel, Bettina A1 - Martin, Rosemarie T1 - Clinical relevance of urokinase-type plasminogen activator and its inhibitor type-1 (PAI-1) in squamous cell carcinoma of the uterine cervix JF - Australian and New Zealand Journal of Obstetrics and Gynaecology N2 - Objective The expression of uPA and PAI‐1 as parameters of tumour‐associated proteolysis has been implicated in the process of tumour cell invasion and the metastatic process. However, there is limited information on the impact of these parameters in cervical carcinoma. Methods Quantitative levels for uPA (n = 114) and PAI‐1 (n = 103) were researched in operatively treated, surgically staged squamous cell cancer of the uterine cervix, using an ELISA‐technique. Results were assessed regarding their impact in predicting pelvic lymph nodes metastases, tumour recurrence rate and recurrence free survival (RFS) using uni‐ and multivariate analysis. Results Median levels of both parameters were significantly higher in tumour tissue than in normal cervical tissue (p < 0.001). Detection of uPA gave no useful prognostic information. PAI‐1 concentration showed a positive correlation with advanced tumour stage (p = 0.008), but no significant correlation with nodal status (pN0: 2.6 vs. pN1: 4.0 ng/mg protein; p = 0.092). Using a cut‐off level of 2.4 ng/mg protein, patients with elevated PAI‐1 levels demonstrated reduced RFS (45.9 versus 52.9 months; p = 0.1). Multivariate analysis, including nodal status, tumour stage, lymphovascular space involvement and grading failed to demonstrate any prognostic impact of uPA and PAI‐1. Conclusions The results indicate, that PAI‐1 expression is of some prognostic impact in cervical cancer, indicating an association of elevated PAI levels with local tumour progression and reduced recurrence‐free survival. KW - Plasminogen human-Aktivator KW - Urokinase KW - squamöser Krebs KW - Gebärmutterhals Y1 - 2004 U6 - https://doi.org/10.1111/j.0004-8666.2002.00385.x VL - 42 IS - 4 SP - 385 EP - 388 ER - TY - JOUR A1 - Horn, Lars-Christian A1 - Fischer, Uta A1 - Raptis, Georgios A1 - Bilek, Karin A1 - Hentschel, Bettina T1 - Tumor size is of prognostic value in surgically treated FIGO stage II cervical cancer JF - Gynecologic Oncology N2 - Objectives Tumor size is a well recognized prognostic factor in early stage cervical carcinoma (CX). However, limited knowledge exists about the value of tumor size in surgically treated CX with extrauterine extension. Methods 245 cases of local advanced CX (FIGO stage IIA and IIB) who received upfront surgery were evaluated regarding tumor size, regarding the prediction of pelvic lymph node involvement and recurrence free and overall survival during a median follow-up time of 54 months (95% CI 45.4–62.6 months). Tumors larger than 4 cm were defined as bulky stage disease. Results Bulky disease was seen in 46.1% (113/245). 60.2% of these patients showed pelvic lymph node involvement, compared to 42.4% (56/132) in non-bulky tumors (p = 0.006; odds ratio: 2.2 [95% CI: 1.3–3.6]). Patients with bulky tumors showed an increase of recurrent disease (40.2% vs. 28.0%; p = 0.045). The relative risk for recurrent disease was 1.97 (95% CI: 1.3–3.0). The 5-year overall survival rate was significantly lower (67.7% [95% CI: 58.2–74.8] vs. 49.5% [95% CI: 36.8–59.1]; p = 0.0015). In multivariate analysis, tumor stage, pelvic lymph node involvement and maximal tumor size were independent prognostic factors. Conclusions The results suggest that tumor size, defining bulky disease as tumors larger than 4 cm, is of prognostic impact also in FIGO stage II cervical carcinomas. A revised FIGO/TNM classification system similar to the subgrouping of stage IB CX is recommended for stage II using a cut-off value of 4 cm as discriminator: stage IIA1 and stage IIB1 for tumors with ≤ 4 cm and IIA2 and IIB2 for tumors > 4 cm (i.e. bulky disease). KW - Gebärmutterhalskrebs KW - Chirurgie KW - Tumorwachstum Y1 - 2007 U6 - https://doi.org/10.1016/j.ygyno.2007.06.026 VL - 107 IS - 2 SP - 310 EP - 315 ER - TY - JOUR A1 - Horn, Lars-Christian A1 - Raptis, Georgios A1 - Fischer, Uta A1 - Bilek, Karin T1 - Impact of tumorload in surgically treated, histologically staged early cervical cancer: Multivariate analysis of 568 patients JF - International Journal of Gynecology & Obstetrics KW - Gebärmutterhalskrebs KW - Chirurgie KW - Tumorklasifikation Y1 - 2000 VL - 70 IS - Suppl. 1 SP - 20 EP - 21 ER - TY - RPRT A1 - Haug, Sonja T1 - Soziales Kapital BT - Ein kritischer Überblick über den aktuellen Forschungsstand N2 - Der Begriff „soziales Kapital“ erfreut sich in den letzten Jahren zunehmender Verbreitung in sozialwissenschaftlichen Publikationen. In diesem Arbeitsbericht wird in Form eines Theorieüberblicks versucht, Aufschluß über die Notwendigkeit und Brauchbarkeit des Konzeptes „soziales Kapital“ zu gewinnen. Es wird untersucht, wie der Begriff bei verschiedenen Autoren definiert wird, welche inhaltlichen Aspekte und Dimensionen des Begriffs zu berücksichtigen sind, wie der Begriff bisher in der empirischen Forschung angewendet und operationalisiert wurde und welche Probleme sich daraus ergeben, welche theoretischen und empirischen Defizite weiterhin bestehen und wie eine wissenschaftstheoretische Beurteilung der bisherigen Forschungen aussieht. Zum Ursprung und der Verbreitung des Begriffs läßt sich feststellen, daß der Begriff innerhalb unterschiedlicher Arbeitsbereiche mehr oder weniger unabhängig voneinander entwickelt wurde, wobei sich mehrere Diskussionszusammenhänge und Verwendungsweisen identifizieren lassen. Es ist grundsätzlich zu unterscheiden zwischen dem Nutzen, den eine Person mit vielen und/oder aufwendig gepflegten sozialen Beziehungen selbst aus diesem „sozialen Kapital“ hat, dem Nutzen, den Personen, die geringen Aufwand zur Aufrechterhaltung von Beziehungen betreiben, haben, indem sie über Dritte („weak ties“) Zugang zu nützlichen Ressourcen erhalten können, und dem Nutzen, den das gesamte Kollektiv aus dem Vorhandensein von bestimmten (kleinen geschlossenen oder großen weitläufigen) Beziehungsnetzen und dem damit verbundenen „sozialen Kapital“ hat. Soziales Kapital wird in empirischen Studien sowohl als unabhängige als auch als abhängige Variable zur Erklärung der unterschiedlichsten Phänomene verwendet und es ist dabei keine einheitliche Operationalisierung feststellbar. Allgemein lassen sich bei der Verwendung des Begriffs des sozialen Kapitals zwei Analyseebenen unterscheiden: In verschiedenen individualistischen und netzwerktheoretischen Ansätzen wird soziales Kapital (analog zum Humankapital) als instrumentell einsetzbare, individuelle, aber nicht unabhängig von anderen Personen verfügbare, Ressource aufgefaßt. In der Debatte um politische Kultur dagegen wird das Gesamt-Sozialkapital oder Vertrauensniveau einer Gesellschaft als positiv bewertete Ressource der Gemeinschaft betrachtet, die zur Lösung von Kollektivgutproblemen beiträgt. Es stellt sich die Frage, ob es sinnvoll ist, alle diese Varianten mit dem Begriff des sozialen Kapitals zu bezeichnen. Y1 - 1997 UR - www.mzes.uni-mannheim.de/publications/wp/wp2-15.pdf SN - 0948-0080 ER - TY - CHAP A1 - Höh, H. A1 - Raptis, Georgios T1 - Applications of the Erbium: YAG Laser in Ophthalmology - Cataracta-, Glaukoma-, Eyelid-Surgery and pars plana Vitrectomy BT - Symposium on Cataract, IOL, and Refractive Surgery. Boston, 20.05.2000 und 22.05.2000 N2 - Recent developments in lasers have provided us the possibility of laser ocular surgery. The xenon, argon, neodymium:YAG and dye lasers have been successfully used in out-patient clinics. The excimer laser has been attracting researchers' interest in the new application of laser to cornea and lens. The erbium:YAG laser emits a 2.94-microns beam that can ablate the transparent ocular tissues such as lenses and corneas. The author has applied this laser to the cornea, lens, vitreous and other ocular tissues. The erbium:YAG laser beam was directed through a 1.5-meter-long, 200-microns-diameter fiberoptic guide. The radiant energy measured about 50 mJ at the end of the probe. The laser was emitted as a 400-microsecond pulse. Freshly enucleated rabbit eyes were used in this study. Laser burns were applied to the tissue surface at various energy settings. At minimal power, the tissues were coagulated by the erbium:YAG laser application. At a power of more than 636-954 mJ/mm2, tissue began to evaporate; the tissue loss was observed under a surgical light microscope. Corneal photoablation, lens ablation, iridotomy, trabeculotomy, cutting of the vitreous and retinal ablation were easily performed. Like the excimer laser, the erbium:YAG laser is a potential tool for ocular surgery. KW - Augenchirurgie KW - YAG-Laser KW - Erbium-Laser Y1 - 2000 ER - TY - JOUR A1 - Chaloupka, I. A1 - Raptis, Georgios A1 - Zach, A. A1 - Brändlin, K. A1 - Meier-Ewert, H. T1 - Rolle der quantitativen CMV-DNA-Bestimmungen in der Diagnostik und Therapie der Cytomegalovirusinfektion bei immunsupprimierten Patienten BT - Vortrag JF - Jahrestagung der Gesellschaft für Virologie in Wien, April 2000 KW - Cytomegalie-Virus KW - Diagnose KW - Immunsuppresion Y1 - 2000 ER - TY - JOUR A1 - Horn, Lars-Christian A1 - Raptis, Georgios A1 - Fischer, Uta A1 - Bilek, Karin T1 - p53-tumorsuppressor gene in surgically treated histologically staged early cervical cancer JF - International Journal of Gynecology & Obstetrics KW - Tumorsuppressor-Gen KW - Chirurgie KW - Histopathologie KW - Gebärmutterhalskrebs Y1 - 2000 VL - 70 IS - Suppl. 1 SP - 112 ER - TY - GEN A1 - Raptis, Georgios T1 - Mechanismen und Einsatzkonzepte von Heilberufsausweis und elektronischer Gesundheitskarte BT - Vortrag T2 - Oberseminar im Fachbereich Informatik, Kryptographie und Computeralgebra der TU-Darmstadt, 28.11.2006 KW - Elektronische Gesundheitskarte KW - Heilberuf KW - Ausweis Y1 - 2006 ER - TY - GEN A1 - Raptis, Georgios T1 - Einsatzmöglichkeiten des elektronischen Heilberufsausweises BT - Vortrag im Rahmen des CAST-Forums, Fraunhofer IGD, 14.09.2006 T2 - CAST-Forums, Fraunhofer IGD, 14.09.2006 KW - Heilberuf KW - Ausweis Y1 - 2006 ER - TY - JOUR A1 - Horn, Lars-Christian A1 - Fischer, Uta A1 - Hanel, C. A1 - Kuhn, H. A1 - Raptis, Georgios A1 - Bilek, Karin T1 - p53 in surgically treated and pathologically staged cervical cancer BT - correlation with local tumor progression, but not with lymphatic spread JF - Pathology - Research and Practice KW - Gebärmutterhalskrebs KW - Tumorsuppressor-Gen KW - Chirurgie KW - Histopathologie Y1 - 2001 VL - 197 IS - 9 SP - 605 EP - 609 ER - TY - CHAP A1 - Horn, Lars-Christian A1 - Pippig, S. A1 - Raptis, Georgios A1 - Fischer, Uta A1 - Köhler, U. A1 - Hentschel, Bettina A1 - Martin, Rosemarie T1 - Tumorassoziierte Proteolyse beim Zervixkarzinom BT - Vortrag T2 - 87. Tagung der Deutschen Gesellschaft für Pathologie, 14. Juni 2003 KW - Gebärmutterhalskrebs KW - Chirurgie KW - Tumorassoziierte Proteolyse KW - Immuncytochemie KW - Zelladhäsion Y1 - 2003 ER - TY - JOUR A1 - Horn, Lars-Christian A1 - Raptis, Georgios A1 - Fischer, Uta T1 - Familial cancer history in patients with carcinoma of the cervix uteri JF - European Journal of Obstetrics & Gynecology and Reproductive Biology KW - Gebärmutterhalskrebs KW - Familienanamnese Y1 - 2002 U6 - https://doi.org/10.1016/s0301-2115(01)00520-6 VL - 101 IS - 1 SP - 54 EP - 57 ER - TY - JOUR A1 - Fischer, Uta A1 - Raptis, Georgios A1 - Geßner, W. A1 - Roschlau, U. A1 - Dressel, K. A1 - Bilek, Karin A1 - Horn, Lars-Christian T1 - Epidemiologie und formale Pathogenese des Zervixkarzinoms JF - Zentralblatt für Gynäkologie T2 - Epidemiology and pathogenesis of cervical cancer KW - Gebärmutterhalskrebs KW - Epidemiologie KW - Pathogenese Y1 - 2001 VL - 123 IS - 4 SP - 198 EP - 205 ER - TY - GEN A1 - Horn, Lars-Christian A1 - Raptis, Georgios A1 - Fischer, Uta T1 - Familiäres Zervixkarzinom – Erste Ergebnisse BT - Poster T2 - 54. Kongress der Deutschen Gesellschaft für Gynäkologie und Geburtshilfe KW - Gebärmutterhalskrebs KW - Familienanamnese Y1 - 2002 ER - TY - CHAP A1 - Raptis, Georgios T1 - Health Professional eIDs vis-á-vis a Single Market Perspective BT - Vortrag T2 - European Health Telematics Association, Berlin, 25.10.2011 KW - eArztausweis KW - Elektronischer Arztausweis Y1 - 2011 ER - TY - JOUR A1 - Reich, Sven A1 - Hornberger, Helga T1 - The effect of multicolored machinable ceramics on the esthetics of all-ceramic crowns JF - Journal of Prosthetic Dentistry N2 - Statement of problems: Computer-aided design/computer-assisted machining systems offer the possibility of fabricating restorations from one machinable ceramic block. Whether multishaded blocks improve esthetic results and are a viable alternative to individually stained ceramics has not been fully determined. Purpose: The aim of this investigation was to examine the effect of multishaded blocks on the esthetic appearance of all-ceramic CEREC crowns and compare these crowns with single-shade and stained restorations. Material and methods: Ten subjects were included in this study. For each subject, 6 different crowns were milled with the use of a CEREC machine. One crown was milled from each of the following machinable ceramic materials: CEREC Vitablocs Mark II in classic colors; Vitablocs Mark II in 3D-Master colors; Vitablocs Mark II in either classic or 3D-Master colors, with additional staining; Megadenta Bloxx multishaded; Mark II experimental multilayer; and an experimental multilayer leucite ceramic. Three independent examiners assessed the esthetic appearance of crowns fabricated to match each subject's anterior tooth shade. A scale of 1 to 6 was used to score the shade match and esthetic adaptation of each crown, with 1 representing excellent characteristics and 3.5 serving as the threshold for clinical acceptability. The examiners' scores were averaged, and the mean values were analyzed with the Wilcoxon signed rank test (P21 days. Rapamycin-eluting microporous (REMP) stents implanted in porcine coronary arteries were safe. To determine the efficacy of REMP stents, this novel drug-eluting stent platform was compared with the standard sirolimus-eluting stent. At 30 days, in-stent neointima formation in porcine coronary arteries was similar in both groups, yielding a significant decrease of neointimal area and injury-dependent neointimal thickness compared with bare-metal stents. Conclusion The ISAR drug-eluting stent platform as a novel concept for stent coating allows for a safe, effective, on-site stent coating process, thus justifying further clinical evaluation to decrease in-stent restenosis in humans. In-stent neointima formation can be successfully attenuated by drug-eluting stents. We introduce a novel conceptual approach for stent-coating that allows for dose-adjustable, on-site stent coating process if desired with multiple compounds. Microporous stents coated with rapamycin proved safe and effective for the limitation of neointima formation in a porcine coronary stent model. KW - drug-eluting stent KW - stent platform KW - sirolimus KW - rapamycin Y1 - 2005 U6 - https://doi.org/10.1161/01.ATV.0000157579.52566.ee SN - 1524-4636 VL - 25 IS - 4 SP - 748 EP - 753 ER - TY - JOUR A1 - Brodersen, Folke A1 - Ebner, Sandra A1 - Schütz, Sandra A1 - Gaupp, Nora T1 - »Ich hab’ doch keine geistige Behinderung – ich sitze ja nicht im Rollstuhl«: Wege und Schwierigkeiten, Jugendliche nach dem Vorliegen einer »Behinderung« zu fragen JF - Journal für Psychologie N2 - Die Operationalisierung von »Behinderung« steht vor mehrfachen Herausforderungen: Sie muss Kriterien definieren, die Verknüpfung mit sozialrechtlichen Institutionen reflektieren und beantwortbar sein – insbesondere gilt dies für Surveys, die Menschen mit unterschiedlichen Behinderungen adressieren. Basierend auf einer Analyse bestehender Lösungsstrategien fokussiert der Beitrag die Perspektive einer lebensweltangemessenen Erhebung. Dazu wurden innerhalb von Fokusgruppen und Einzelerhebungen mit Jugendlichen mit Behinderungen die Dimensionen Schwerbehindertenausweis, Selbstbild, Funktionen und Einschränkungen, Klassifikationen in Anlehnung an medizinisch-diagnostische Begriffe, die Nutzung von Hilfsmitteln sowie das Erleben von Barrieren bearbeitet. Diskutiert werden daraufhin die Reaktionen und Wünsche der Jugendlichen zur Erfassung von »Behinderung«, die Beantwortbarkeit der jeweiligen Dimensionen sowie Zusammenhänge im Sinne eines empirisch differenzierten Modells von Behinderung. Der Beitrag schließt mit einem Hinweis auf aussichtsreiche Kombinationen von Dimensionen in der Operationalisierung sowie mit einem Plädoyer für den Erkenntnisgewinn mehrdimensionaler Erhebungen von »Behinderung«. KW - Quantitative Sozialforschung KW - Jugendforschung KW - Operationalisierung von Behinderung KW - Lebensweltorientierung Y1 - 2018 U6 - https://doi.org/10.30820/8248.08 VL - 26 IS - 2 SP - 133 EP - 159 PB - Psychosozial-Verlag CY - Gießen ER - TY - BOOK A1 - Schütz, Sandra T1 - Kommunikationsorientierte Therapie bei Aphasie N2 - Sprachlos? Von wegen! Aphasie ist eine Sprachstörung, die nach einer Hirnschädigung – verursacht z.B. durch einen Schlaganfall oder einen Unfall – auftreten kann. Die kommunikationsorientierte Therapie bei Aphasie zielt darauf ab, die Kommunikationsfähigkeit der PatientInnen zu verbessern. Das Buch gibt einen Überblick, welche kommunikationsorientierten Verfahren in Diagnostik und Therapie für den Klinik- und Praxisalltag zur Verfügung stehen. SprachtherapeutInnen erhalten zahlreiche Tipps und Empfehlungen für die Arbeit mit Aphasie-PatientInnen. Sie erfahren, wie Angehörige sinnvoll beraten und in die Therapie einbezogen werden können, um den Alltag für die von Aphasie Betroffenen und deren Familien zu erleichtern und die Lebensqualität zu erhöhen. Die Reihe „Praxis der Sprachtherapie und Sprachheilpädagogik“ wird herausgegeben von Prof. Dr. Manfred Grohnfeldt. KW - Aphasie KW - Kommunikationstraining KW - Logopädie Y1 - 2013 SN - 978-3-497-02398-1 PB - Ernst Reinhardt CY - München ER - TY - CHAP A1 - Schütz, Sandra A1 - Brodersen, Folke A1 - Ebner, Sandra A1 - Gaupp, Nora ED - Laubenstein, Désirée ED - Scheer, David T1 - Wie inklusiv ist die empirische Jugendforschung? Aktuelle deutsche Jugendstudien und die Dimension Behinderung T2 - Sonderpädagogik zwischen Wirksamkeitsforschung und Gesellschaftskritik Y1 - 2017 SP - 85 EP - 93 PB - Klinkhardt CY - Bad Heilbrunn ER - TY - CHAP A1 - Biewer, Gottfried A1 - Schütz, Sandra ED - Hedderich, Ingeborg ED - Biewer, Gottfried ED - Hollenweger, Judith ED - Markowetz, Reinhard T1 - Inklusion T2 - Handbuch Inklusion und Sonderpädagogik KW - Inklusive Pädagogik Y1 - 2016 UR - https://elibrary.utb.de/doi/book/10.36198/9783838586434 SP - 123 EP - 127 PB - Klinkhardt CY - Bad Heilbrunn ER - TY - JOUR A1 - Heese, Carl A1 - Frey, Claudia T1 - Versorgung und Hilfe bei Demenz: Bekanntheit von Entlastungsangeboten für Angehörige und Versorgungswünsche JF - Pflege und Gesellschaft N2 - 217 Teilnehmer/innen wurden mittels standardisierter Fragebögen zu ihrer Informiertheit über das Hilfesystem bei Demenz sowie zu ihren eigenen Versorgungswünschen im Falle einer Demenzerkrankung befragt. Bei den Probanden handelt es sich um Personen mit und ohne pflegebedürftige Angehörige. Jene wurden hinsichtlich ihrer Versorgungssituation in drei Gruppen unterteilt: ambulante Pflege, Tagespflege und Altenpflegeheime. Die Ergebnisse zeigen, dass in allen Untersuchungsgruppen ein im Allgemeinen geringer Informationsstand in Bezug auf die unterschiedlichen Hilfs- und Entlastungsangebote für Angehörige dementer Patienten vorherrscht. Zu den bevorzugten Versorgungsformen im Falle eigener Betroffenheit gehören ambulante sowie neue, alternative Pflegemodelle. KW - Pflege KW - Demenz Y1 - 2011 UR - https://content-select.com/de/portal/media/view/527fcc16-5c9c-4c4f-833a-68cd2efc1343 SN - 1430-9653 VL - 3 SP - 271 EP - 282 PB - Beltz Juventa CY - Weinheim ER - TY - JOUR A1 - Hornberger, Helga A1 - Randow, Clemens A1 - Fleck, Claudia T1 - Fatigue and surface structure of titanium after oxygen diffusion hardening JF - Materials Science & Engineering A N2 - The characterization of oxygen diffusion zone in titanium and the effect of this zone on macroscopic properties are still of high interest for a base to predict and to enhance life time of titanium and titanium alloy components. The aim of this study was to contribute to the understanding of the impact of oxygen on fatigue properties of oxygen diffusion hardened Ti and Ti alloys. Oxygen diffusion hardening implies two process steps, first the oxidation of the surface and secondly the diffusion of oxygen into metal matrix. Due to the one-step treatment used in this study the oxidation step could take place easily avoiding scaling and grain boundary diffusion. In spite of this precaution, the fatigue properties in the present study were found to be decreased after the performed oxygen diffusion hardening. The reason for the reduction of mechanical properties were claimed to be oxide clusters on the surface acting as crack initiation sites. Comparison and discussion with literature revealed varying partially contradictory fatigue results. Therefore precise analysis of the fatigue failure is necessary as a base for further development of the oxygen diffusion hardening. KW - Titanium alloys KW - Oxygen diffusion KW - Surface hardening KW - Fatigue Y1 - 2015 U6 - https://doi.org/10.1016/j.msea.2015.02.006 VL - 630 SP - 51 EP - 57 ER - TY - CHAP A1 - Heese, Carl A1 - Frey, Claudia ED - Birgmeier, Bernd T1 - Die Eichstätter Angehörigenstudie Demenz BT - Untersuchungsanlage und erste Ergebnisse T2 - Sozialpädagogik und Integration KW - Soziale Arbeit KW - Pflege KW - Demenz Y1 - 2010 SN - 978-3-89924-284-3 SP - 323 EP - 324 PB - Blaue Eule CY - Essen ER - TY - JOUR A1 - Ding, Yining A1 - Kusterle, Wolfgang T1 - Bemessungsmodell für Stahlfaserbeton JF - Beton- und Stahlbetonbau N2 - Die Bemessungsrichtlinien für Stahlfaserbeton folgen je nach Land unterschiedlichen Ansätzen. Generell kann festgehalten werden, daß das Niveau dieser Bemessungsrichtlinien i. d. R. nicht mit den entsprechenden Normen für Stahlbeton vergleichbar ist. Die Richtlinien erreichen oft nur den Stand von Empfehlungen. Da die Bemessungstheorie des Stahlfaserbetons weit hinter der praktischen Anwendung zurückliegt, bedeutet dies in der Praxis, daß der Stahlfaserbeton oft nur für Bauteile, deren Tragfähigkeit als untergeordnet betrachtet wird, zum Einsatz kommt. Eine gute Bemessungsgrundlage für Faserbetone findet sich im DBV-Merkblatt "Bemessungsgrundlagen für Stahlfaserbeton im Tunnelbau". Für die praktische Anwendung ist sie jedoch etwas zu kompliziert. Der Beitrag stellt ein neues Bemessungsmodell vor, das auf den Ergebnissen zahlreicher Biegezugversuche beruht, die für den verwendeten Stahlfasertyp statistisch ausgewertet wurden. KW - Stahlfaserbeton KW - Bemessung KW - Rißbildung KW - Biegezugfestigkeit Y1 - 2000 U6 - https://doi.org/10.1002/best.200000390 SN - 1437-1006 VL - 95 IS - 4 SP - 225 EP - 231 PB - Ernst & Sohn ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Niedermeier, Roland A1 - Schmitt, Alexander A1 - Zilch, Konrad ED - Zilch, Konrad T1 - Beispiel 3: Verstärkung eines Plattenbalkens mit aufgeklebten CFK-Lamellen T2 - Erläuterungen und Beispiele zur DAfStb-Richtlinie "Verstärken von Betonbauteilen mit geklebter Bewehrung" KW - Betonbauteil KW - Bewehrung KW - Lamelle KW - Kohlenstofffaserverstärkter Kunststoff KW - Kleben KW - Tragfähigkeit KW - Bemessung KW - Gewirke KW - Kohlenstoffaser Y1 - 2013 SN - 978-3-410-65245-8 SN - 0171-7197 SP - 83 EP - 108 PB - Beuth CY - Berlin ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Schmitt, Alexander A1 - Zilch, Konrad ED - Zilch, Konrad T1 - Beispiel 2: Verstärkung einer Platte mit in Schlitze verklebten CFK-Lamellen T2 - Erläuterungen und Beispiele zur DAfStb-Richtlinie "Verstärken von Betonbauteilen mit geklebter Bewehrung" KW - Betonbauteil KW - Bewehrung KW - Lamelle KW - Kohlenstofffaserverstärkter Kunststoff KW - Kleben KW - Tragfähigkeit KW - Bemessung KW - Gewirke KW - Kohlenstoffaser Y1 - 2013 SN - 978-3-410-65245-8 SN - 0171-7197 SP - 65 EP - 82 PB - Beuth CY - Berlin ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Niedermeier, Roland ED - Zilch, Konrad T1 - Beispiel 4: Verstärkung einer Stahlbetonstütze durch Umwicklung T2 - Erläuterungen und Beispiele zur DAfStb-Richtlinie "Verstärken von Betonbauteilen mit geklebter Bewehrung" KW - Betonbauteil KW - Bewehrung KW - Lamelle KW - Kohlenstofffaserverstärkter Kunststoff KW - Kleben KW - Tragfähigkeit KW - Bemessung KW - Gewirke KW - Kohlenstoffaser Y1 - 2013 SN - 978-3-410-65245-8 SN - 0171-7197 SP - 109 EP - 119 PB - Beuth CY - Berlin ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Niedermeier, Roland T1 - Example 4: Strengthening a reinforced concrete column by wrapping T2 - Commentary on the DAfStb guideline "Strengthening of concrete members with adhesively bonded reinforcement" with examples KW - Betonbauteil KW - Bewehrung KW - Lamelle KW - Kohlenstofffaserverstärkter Kunststoff KW - Kleben KW - Tragfähigkeit KW - Bemessung KW - Gewirke KW - Kohlenstofffaser Y1 - 2014 SN - 978-3-410-65255-7 SN - 0171-7197 SP - 115 EP - 125 PB - Beuth CY - Berlin ; Wien ; Zürich ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Schmitt, Alexander A1 - Zilch, Konrad ED - Zilch, Konrad T1 - Beispiel 1: Verstärkung einer Platte mit aufgeklebten CFK-Lamellen T2 - Erläuterungen und Beispiele zur DAfStb-Richtlinie "Verstärken von Betonbauteilen mit geklebter Bewehrung" KW - Betonbauteil KW - Bewehrung KW - Lamelle KW - Kohlenstofffaserverstärkter Kunststoff KW - Kleben KW - Tragfähigkeit KW - Bemessung KW - Gewirke KW - Kohlenstoffaser Y1 - 2013 SN - 978-3-410-65245-8 SN - 0171-7197 SP - 45 EP - 64 PB - Beuth CY - Berlin ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Schmitt, Alexander A1 - Zilch, Konrad T1 - Example 2: Strengthening a slab with near surface mounted CFRP strips T2 - Commentary on the DAfStb guideline "Strengthening of concrete members with adhesively bonded reinforcement" with examples KW - Betonbauteil KW - Bewehrung KW - Lamelle KW - Kohlenstofffaserverstärkter Kunststoff KW - Kleben KW - Tragfähigkeit KW - Bemessung KW - Gewirke KW - Kohlenstoffaser Y1 - 2014 SN - 978-3-410-65255-7 SN - 0171-7197 SP - 69 EP - 86 PB - Beuth CY - Berlin ; Wien ; Zürich ER - TY - CHAP A1 - Finckh, Wolfgang A1 - Schmitt, Alexander A1 - Zilch, Konrad T1 - Example 1: Strengthening a slab with externally bonded CFRP strips T2 - Commentary on the DAfStb guideline "Strengthening of concrete members with adhesively bonded reinforcement" with examples KW - Betonbauteil KW - Bewehrung KW - Lamelle KW - Kohlenstofffaserverstärkter Kunststoff KW - Kleben KW - Tragfähigkeit KW - Bemessung KW - Gewirke KW - Kohlenstoffaser Y1 - 2014 SN - 978-3-410-65255-7 SN - 0171-7197 SP - 47 EP - 68 PB - Beuth CY - Berlin ; Wien ; Zürich ER - TY - JOUR A1 - Kofiani, Kirki A1 - Nonn, Aida A1 - Wierzbicki, Tomasz T1 - New calibration method for high and low triaxiality and validation on SENT specimens of API X70 JF - International Journal of Pressure Vessels and Piping N2 - The determination of the exact mechanical properties of material is essential for an optimal and safe design of linepipes. It is especially important for the prevention of over-engineering and the reliable assessment of complex accidental loading, such as extreme bending due to loss of buoyancy of support, or abrupt ground movement. Currently, the focus of research in offshore deepwater installations and linepipes is towards pre-cracked structures with high triaxiality stress states and complex loading histories. At the same time, low triaxiality stress states must be correctly studied in order to represent shear dominated failure in pipes. A comprehensive experimental and numerical program was undertaken to determine the mechanical properties of the traditional API X70 grade of steel. The material was characterized for anisotropic plasticity, fracture initiation and uncracked ductility for various states of stress. The same material was also used for pre-cracked fracture toughness assessment. The experimental program included flat and round specimens. The first type of tests on flat butterfly-shaped, central hole, notched and circular disk specimens; were selected to address the low stress triaxiality range. Tests on round notched bar specimens and SENT fracture mechanics tests extended the characterization and verification process to higher stress triaxiality values. This program covered a wide range of stress conditions and demonstrated their effect on the material resistance to crack extension. Each test conducted was numerically simulated using solid finite element models, matching the exact geometric and loading history features. The numerical simulation provided information on the local stress and strain fields around the location of the potential or existing cracks. Based on the above hybrid experimental/numerical technique tailored for pipe applications, the MMC fracture model was calibrated. The model relates the material ductility not only to stress triaxiality but also to the Lode parameter. The predictive capabilities of the MMC were then evaluated in the case of SENT testing, used extensively in the pipeline industry. It was shown that the present fracture model calibration can describe fracture behavior of SENT experiments. KW - Ductile fracture KW - SENT tests KW - Offshore API grade KW - X70 KW - Modified Mohr – Coulomb model KW - Triaxiality and Lode angle dependence Y1 - 2013 U6 - https://doi.org/10.1016/j.ijpvp.2013.07.004 VL - 111-112 SP - 187 EP - 201 ER - TY - JOUR A1 - Bleck, Wolfgang Peter A1 - Dahl, Winfried A1 - Nonn, Aida A1 - Amlung, Lars A1 - Feldmann, Markus A1 - Schäfer, Dirk A1 - Eichler, Björn T1 - Numerical and experimental analyses of damage behaviour of steel moment connection JF - Engineering Fracture Mechanics N2 - Plastic design allows the exploitation of the full resistance of steel structures by taking advantage of stress–redistributions due to plastic strains exceeding the yield strain. Especially in seismic design the utilization of material reserves and the formation of plastic hinges play an important role. In devastating earthquakes in Northridge (USA) and Kobe (Japan) brittle fracture of welded connections in steel moment frames occurred prior to formation of plastic hinges and utilization of plastic material reserves. The subsequent research works resulted in improved design rules and recommendations for these kinds of failure. But to guarantee sufficient ductile performance of these connections also in the upper shelf region, plastic and earthquake resistant design rules should take into account degradation of strain capacity and toughness properties due to quasi static and especially seismic loading. In the scope of the current European project “Plastotough”, the main objective is to derive quantified toughness design rules in the upper shelf based on the strain requirements opposed to strain capacities. This paper gives an overview over the research work in performance and shows recent results from experimental and numerical analyses performed within this project for monotonic and cyclic loading. KW - Beam column connections KW - Seismic loading KW - LPD model Y1 - 2009 U6 - https://doi.org/10.1016/j.engfracmech.2009.03.004 VL - 76 IS - 10 SP - 1531 EP - 1547 ER - TY - JOUR A1 - Nonn, Aida A1 - Dahl, Winfried A1 - Bleck, Wolfgang Peter T1 - Numerical modelling of damage behaviour of laser-hybrid welds JF - Engineering Fracture Mechanics N2 - The effect of laser-hybrid welds on deformation and failure behaviour of fracture mechanics specimens is investigated in order to provide quantitative prediction of damage tolerance and residual strength. The simulation of crack initiation and crack extension in hybrid welds is performed by applying GTN damage model. The identification of damage parameters requires combined numerical and experimental analyses. The tendency to crack path deviation during crack growth depends strongly on the constraint development at the interface between base and weld metal. In order to quantify the influence of local stress state on the crack path deviation, the initial crack location is varied. Finally, the results from fracture mechanics tests are compared to real component, beam-column-connection, with respect to fracture resistance. KW - GTN model KW - Laser-hybrid welds KW - Damage KW - Crack path deviation Y1 - 2008 U6 - https://doi.org/10.1016/j.engfracmech.2007.10.015 VL - 75 SP - 3251 EP - 3263 ER - TY - CHAP A1 - Nonn, Aida A1 - Dahl, Winfried A1 - Bleck, Wolfgang Peter T1 - Damage Modelling and Safety Assessment of the Hybrid Welded Structures T2 - 5th German-Japanese Seminar "Materials, Processes and Components", Fraunhofer Institute for Mechanics of Materials, Freiburg, Germany Y1 - 2007 ER - TY - JOUR A1 - Schliermann, Rainer A1 - Stolz, Isabel A1 - Anneken, Volker T1 - The sports background, personality, attitudes, and social competencies of coaches and assistant coaches in the ‘Just Soccer’ program for pupils with intellectual disabilities JF - Human Movement N2 - The purpose of this study was to empirically analyze the sports background, personality dimensions, attitudes, and social competencies of adult head coaches and young assistant coaches involved in the German Einfach Fußball ( Just Soccer) program, which promotes the participation of pupils with intellectual disabilities in soccer/sports and society. Methods. The study recruited 28 head coaches and 29 assistant coaches who completed a questionnaire battery of standardized instruments (NEO Five-Factor Inventory, Interpersonal Reactivity Index, Social Self-Efficacy) as well as self-developed instruments. Analysis of the data involved descriptive and inferential statistical procedures. A descriptive comparison of the assistant coaches with a normative sample of males aged 16–20 years was performed. Results. The head coaches were found with little soccer/sports experience with persons with disabilities prior to participation in the Just Soccer program. However, the majority were familiar with these persons through personal/vocational contacts. Overall, the head coaches were differentiated by formal coaching levels and playing backgrounds, with very few holding any additional formal qualifications in special education. The assistant coaches pre sented below average scores in the analyzed five personality dimensions when compared with the normative sample. Their attitudes and social competencies did not change during their 8-month involvement in Just Soccer . Conclusions. The findings highlight the important role of the coaching staff in the success of the Just Soccerprogram. coaches involved in such activities should be familiarized with needs of people with disabilities, be stress-resistant, and possess a balanced set of personality traits. In addition, the results suggest that such individuals should be coaches/players from conventional soccer clubs instead of special school physical education teachers. KW - participation KW - inclusion KW - soccer KW - disabilities KW - personality KW - attitudes Y1 - 2014 U6 - https://doi.org/10.1515/humo-2015-0009 SN - 1732-3991 VL - 15 IS - 3 SP - 177 EP - 185 PB - Versita CY - Warsaw ER - TY - CHAP A1 - Schliermann, Rainer A1 - Heydenreich, P. A1 - Scheuer, Tanja A1 - Anneken, Volker T1 - Lebensqualität, Erwerbstätigkeit und körperliche Aktivität bei Menschen mit Sehschädigungen: Eine Befragung ehemaliger Rehabilitanden von Berufsförderungs- und Berufsbildungswerken T2 - 23. Rehabilitationswissenschaftliches Kolloquium - Deutscher Kongress für Rehabilitationsforschung: Arbeit - Gesundheit - Rehabilitation vom 10. bis 12. März 2014 in Karlsruhe Y1 - 2014 UR - https://www.deutsche-rentenversicherung.de/SharedDocs/Downloads/DE/Experten/reha_forschung/reha_kolloquium/TB-23Reha-Koll.html SN - 978–3–00–045196–6 SP - 106 EP - 108 CY - Berlin ER - TY - GEN A1 - Schliermann, Rainer A1 - Scheuer, Tanja A1 - Heydenreich, P. A1 - Anneken, Volker ED - Stoll, Oliver ED - Lau, Andreas ED - Moczall, Simone T1 - Sport und Lebensqualität von Personen mit Sehschädigungen T2 - Angewandte Sportpsychologie : 45. Jahrestagung der Arbeitsgemeinschaft für Sportpsychologie (asp) vom 09. - 11. Mai 2013 in Halle (Saale) Y1 - 2013 SN - 978-3-88020-597-0 SP - 91 PB - Feldhaus, Ed. Czwalina CY - Hamburg ER - TY - JOUR A1 - Manaranche, Claire A1 - Hornberger, Helga T1 - A proposal for the classification of dental alloys according to their resistance to corrosion JF - Dental Materials N2 - Objectives The purpose of this study was to establish a method to compare and classify dental alloys in relation to their resistance to corrosion. Methods Alloy samples and pure metal samples were prepared and tested in chemical and electrochemical corrosion according to ISO 10271. For electrochemical test, the rest potential versus time and a potentiodynamic scan were recorded. After chemical corrosion test, the ions released were analyzed by ICP (induced coupled plasma) spectroscopy. Results High gold alloys had a similar polarization curve than gold. The same effect was observed for Pd–base alloys, their curves were similar to the one of palladium. The ions released during chemical corrosion were non-precious metallic ions. Thereby Ni–Cr alloys were found to release the most ions. Au–Pt alloys showed the highest release of ions compared with other precious alloys but low compared with Ni–Cr. Electrochemical corrosion was more aggressive than chemical corrosion and every type of elements was etched, the higher the precious metal content, the higher the resistance to corrosion of the alloy. Discussion Using the recorded data, a classification system for electrochemical corrosion was developed and discussed to judge the results. Hereby were gold and zinc used as reference materials. The applied classification system defines five classes and it is proposed that alloys of class V are not acceptable. For chemical corrosion resistance, three classes were distinguished according to the quantity of metallic ions released and it is proposed that class III (100–1000 μg/cm2 week) is not acceptable. Palladium and Pd–base alloys showed a higher electrochemical and chemical corrosion resistance than gold. KW - Dental alloys KW - Precious alloys KW - Corrosion test KW - Resistance to corrosion KW - Classification KW - Ion release Y1 - 2007 U6 - https://doi.org/10.1016/j.dental.2006.11.030 VL - 23 IS - 11 SP - 1428 EP - 1437 ER - TY - CHAP A1 - Rudolph, Clarissa ED - Aulenbacher, Brigitte ED - Wetterer, Angelika T1 - Arbeitslosigkeit – Bremse oder Motor beim Wandel der Geschlechterverhältnisse T2 - Arbeit. Perspektiven und Diagnosen der Geschlechterforschung KW - Arbeitslosigkeit KW - Geschlechterforschung Y1 - 2009 SN - 978-3-896-91225-1 SP - 138 EP - 156 PB - Westfälisches Dampfboot CY - Münster ER - TY - CHAP A1 - Rudolph, Clarissa ED - Jaehrling, Karen ED - Rudolph, Clarissa T1 - Die Rolle des Staates bei der Regulierung von Privatheit T2 - Grundsicherung und Geschlecht : Gleichstellungspolitische Befunde zu den Wirkungen von Hartz IV Y1 - 2010 SN - 978-3-89691-866-6 SP - 214 EP - 228 PB - Westfälisches Dampfboot CY - Münster ER - TY - CHAP A1 - Brand, Ortrun A1 - Rudolph, Clarissa ED - Betzelt, Sigrid ED - Lange, Joachim ED - Rust, Ursula T1 - Gleichstellung als Luxus? T2 - Wer wird "aktiviert" - und warum (nicht)? : Erste Erkenntnisse zur Realisierung der gleichstellungspolitischen Ziele des SGB II ; [Dokumentation einer Tagung der Evangelischen Akademie Loccum vom 29. bis 30. September 2008, in Kooperation mit dem Zentrum für Sozialpolitik der Universität Bremen, ZeS, und dem Bremer Institut für Deutsches, Europäisches und Internationales Gender-, Arbeits- und Sozialrecht (Bigas) der Universität Bremen]. - KW - Deutschland KW - Geschlechterpolitik Y1 - 2009 SN - 9783817279081 SP - 223 EP - 246 PB - Evang. Akad. Loccum, Protokollstelle CY - Rehburg-Loccum ER - TY - CHAP A1 - Rudolph, Clarissa ED - Jaehrling, Karen ED - Rudolph, Clarissa T1 - Vergeschlechtlichungsprozesse im SGB II und gleichstellungspolitische Interventionen T2 - Grundsicherung und Geschlecht : Gleichstellungspolitische Befunde zu den Wirkungen von Hartz IV KW - Deutschland KW - Hartz-Reform KW - Geschlechterpolitik Y1 - 2010 SN - 978-3-89691-866-6 SP - 57 EP - 70 PB - Westfälisches Dampfboot CY - Münster ER - TY - RPRT A1 - Haug, Sonja A1 - Babka von Gostomski, Christian A1 - Baraulina, Tatjana T1 - Kriminalität von Aussiedlern BT - eine Bestandsaufnahme N2 - "Das Bundesministerium des Innern hat die Forschungsgruppe des Bundesamtes für Migration und Flüchtlinge damit beauftragt, valide Zahlen zur Aussiedlerkriminalität zusammenzustellen und den Stand der Forschung aufzuarbeiten. Mit dem Working Paper wird eine Bestandsaufnahme vorgelegt, die sowohl die polizeiliche Kriminalitätsstatistik als auch die empirische Sozialforschung berücksichtigt. Dabei wird die Kriminalität von Aussiedlern mit der Kriminalität von einheimischen Deutschen und Nichtdeutschen verglichen. Die Befunde werden unter Berücksichtigung aller methodischen Forschungsprobleme eingehend beleuchtet. In Ergänzung dazu werden die selbstberichteten Gewalt- und Delinquenzerfahrungen von jugendlichen Aussiedlern anhand verschiedener Dunkelfelduntersuchungen analysiert. Die Ursachen und Risikofaktoren, die mit einer erhöhten Kriminalitätsrate einhergehen, werden dargelegt." Y1 - 2008 UR - https://nbn-resolving.org/urn:nbn:de:0168-ssoar-384932 CY - Nürnberg ER - TY - CHAP A1 - Köhn, Arne A1 - Baumann, Timo A1 - Dörfler, Oskar T1 - An Empirical Analysis of the Correlation of Syntax and Prosody T2 - Proceedings of Interspeech 2018, 02.-06.09.2018, Hyderabad N2 - The relation of syntax and prosody (the syntax-prosody interface) has been an active area of research, mostly in linguistics and typically studied under controlled conditions. More recently, prosody has also been successfully used in the data-based training of syntax parsers. However, there is a gap between the controlled and detailed study of the individual effects between syntax and prosody and the large-scale application of prosody in syntactic parsing with only a shallow analysis of the respective influences. In this paper, we close the gap by investigating the significance of correlations of prosodic realization with specific syntactic functions using linear mixed effects models in a very large corpus of read-out German encyclopedic texts. Using this corpus, we are able to analyze prosodic structuring performed by a diverse set of speakers while they try to optimize factual content delivery. After normalization by speaker, we obtain significant effects, e.g. confirming that the subject function, as compared to the object function, has a positive effect on pitch and duration of a word, but a negative effect on loudness. KW - syntax KW - prosody KW - corpus-based analysis KW - linear mixed effects models Y1 - 2018 U6 - https://doi.org/10.21437/Interspeech.2018-2530 SP - 2157 EP - 2161 ER - TY - JOUR A1 - Pfingsten, Andrea A1 - Borgetto, Bernhard T1 - Physiotherapie in der Rheumatologie. Versorgungsbedarf aus Sicht von Patienten JF - Aktuelle Rheumatologie N2 - Hintergrund: Die Effektivität von Physiotherapie bei rheumatischen Erkrankungen, die aus experimentellen Studien zu erwarten ist, kann unter Alltagsbedingungen nicht erreicht werden. Ziel der hier vorgestellten Studie ist es, durch Erhebung des Versorgungsbedarfs aus Sicht der Patienten dazu beizutragen, die Diskrepanz zu verringern. Patienten/Material und Methode: 5 Patienten mit rheumatischen Erkrankungen wurden in qualitativen Interviews hinsichtlich der Versorgung mit Physiotherapie befragt. Ergebnisse: Die Befragten bewerten Physiotherapie als wichtigen Bestandteil der Versorgung. Sie halten die derzeitige Versorgung für nicht ausreichend und wenig auf symptomatische und andere Parameter abgestimmt. Persönliches Engagement und der verordnende Arzt werden als Haupteinflussfaktoren auf die Versorgung mit Therapie empfunden. Von Therapeuten erwarten sie eine Spezialisierung auf rheumatische Erkrankungen und besonderes Einfühlungsvermögen. Schlussfolgerung: Eine stärkere Abstimmung der Verordnungen und Interventionen auf die Bedürfnisse der Betroffenen und eine Steigerung der Therapiequalität durch Spezialisierung könnte helfen, die potenziellen Effekte in der Routineversorgung zu erzielen. T2 - Physiotherapy in the treatment of rheumatic disease KW - Physiotherapie KW - Rheuma KW - Patientenperspektive KW - Interview KW - qualitative Forschung Y1 - 2013 U6 - https://doi.org/10.1055/s-0032-1311574 VL - 38 IS - 1 SP - 50 EP - 54 PB - Georg Thieme Verlag ER - TY - JOUR A1 - Pfingsten, Andrea T1 - Genauigkeit des Lachman Tests zur Feststellung einer Ruptur des vorderen Kreuzbandes BT - Ein systematischer Review über Metaanalysen der letzten fünf Jahre JF - pt - Zeitschrift für Physiotherapeuten N2 - Die Ruptur des vorderen Kreuzbandes (ACL, anterior cruciate ligament) ist die häufigste Bandverletzung des Kniegelenks und kann zu schwerwiegenden Folgen führen. Um diese im Rahmen einer Behandlung oder eines Forschungsprojektes manuell zu diagnostizieren, werden geeignete Assessments benötigt. Der vorliegende systematische Review stellt die vorhandene Evidenz des Lachman-Tests als diagnostisches Verfahren zur Feststellung einer ACL-Ruptur dar. Y1 - 2009 SN - 1614-0397 VL - 61 IS - 2 SP - 108 EP - 123 PB - Pflaum CY - München ER - TY - JOUR A1 - Borgetto, Bernhard A1 - Pfingsten, Andrea T1 - Evidenzbasierte Physiotherapie. Strukturelle Verankerung im Deutschen Netzwerk für Evidenzbasierte Medizin JF - pt - Zeitschrift für Physiotherapeuten Y1 - 2012 SN - 1614-0397 VL - 64 IS - 5 SP - 82 EP - 83 PB - Pflaum CY - München ER - TY - CHAP A1 - Baumann, Timo T1 - Coordinating Speech Delivery to Gesture Progress for Deictic Expressions with Incremental Speech Synthesis T2 - Proceedings of the Timing in Human-Robot Interaction Workshop held in conjunction with the 9th ACM/IEEE International Conference on Human-Robot Interaction (HRI 2014), Bielefeld, 3. March 2014 N2 - This paper presents ongoing work in incremental speech synthesis that enables a system to adapt speech delivery to unforeseen changes in the timing of motor events (e. g. a robot actuator working faster or slower than anticipated) in order to improve the coordination of speech and gestures for deictic expressions. KW - Incremental processing KW - speech synthesis KW - online adaptation KW - Inkrementelle Verarbeitung, KW - Sprachsynthese KW - Zeigegesten KW - Echtzeitadaptierung KW - Sprachverarbeitung Y1 - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:18-228-7-1991 UR - https://edoc.sub.uni-hamburg.de/informatik/volltexte/2014/199/pdf/timo_baumann_coordinating_speech_delivery.pdf ER - TY - CHAP A1 - Haug, Sonja T1 - Framing von Entscheidungen und ethnische Konflikte T2 - Interdisziplinäres Kolloquium des Lehrstuhls für Philosophie und philosophischer Grundlagen kulturwissenschaftlicher Analyse, 15.02.2000, Frankfurt (Oder) Y1 - 2000 ER - TY - JOUR A1 - Hornberger, Helga A1 - Virtanen, Sannakaisa A1 - Boccaccini, Aldo R. T1 - Biomedical coatings on magnesium alloys BT - a review JF - Acta Biomaterialia N2 - This review comprehensively covers research carried out in the field of degradable coatings on Mg and Mg alloys for biomedical applications. Several coating methods are discussed, which can be divided, based on the specific processing techniques used, into conversion and deposition coatings. The literature review revealed that in most cases coatings increase the corrosion resistance of Mg and Mg alloys. The critical factors determining coating performance, such as corrosion rate, surface chemistry, adhesion and coating morphology, are identified and discussed. The analysis of the literature showed that many studies have focused on calcium phosphate coatings produced either using conversion or deposition methods which were developed for orthopaedic applications. However, the control of phases and the formation of cracks still appear unsatisfactory. More research and development is needed in the case of biodegradable organic based coatings to generate reproducible and relevant data. In addition to biocompatibility, the mechanical properties of the coatings are also relevant, and the development of appropriate methods to study the corrosion process in detail and in the long term remains an important area of research. KW - Magnesium alloyn KW - Biodegradable materials KW - Coatings KW - Conversion KW - Deposition Y1 - 2012 U6 - https://doi.org/10.1016/j.actbio.2012.04.012 VL - 8 IS - 7 SP - 2442 EP - 2455 ER - TY - CHAP A1 - Zilch, Konrad A1 - Finckh, Wolfgang ED - Nothnagel, Reinhard ED - Twelmeier, Heiko T1 - Mechanischer Hintergrund der Wirkungsweise der aufgeklebten Bewehrung T2 - Baustoff und Konstruktion - Festschrift zum 60. Geburtstag von Harald Budelmann N2 - Die Wirkungsweise einer aufgeklebten Biegezugverstärkung kann aufgrund der umfangreichen Forschung der letzten Jahrzehnte nun gut beschrieben werden. Eine wesentliche Rolle spielt hierbei der Verbund zwischen Beton und aufgeklebter Bewehrung, welcher durch die mäßige Zugfestigkeit der oberflächennahen Betonschichten charakterisiert wird. Dieser Aufsatz gibt einen historisch orientierten Abriss der Entwicklung des derzeitigen Kenntnisstands zur mechanischen Beschreibung der Wirkungsweise der aufgeklebten Bewehrung an. Dazu wird zunächst auf das Verbundverhalten der aufgeklebten Bewehrung sowie die übertragung auf das Bauteil und danach auf den weiteren Einfluss des Verbundes auf das Bauteilverhalten eingegangen. Y1 - 2013 SN - 978-3-642-29572-0 SN - 978-3-642-29573-7 U6 - https://doi.org/10.1007/978-3-642-29573-7_26 SP - 243 EP - 261 PB - Springer CY - Wiesbaden ER - TY - RPRT A1 - Haug, Sonja T1 - Klassische und neuere Theorien der Migration Y1 - 2000 UR - www.mzes.uni-mannheim.de/publications/wp/wp-30.pdf SN - 1437-8574 ER - TY - JOUR A1 - Gebhardt, F. A1 - Seuss, Sigrid A1 - Turhan, Metehan C. A1 - Hornberger, Helga A1 - Virtanen, Sannakaisa A1 - Boccaccini, Aldo R. T1 - Characterization of electrophoretic chitosan coatings on stainless steel JF - Materials Letters N2 - Electrophoretic chitosan deposits on stainless steel AISI 316 L were produced and characterized. The coating quality (thickness, defectiveness, corrosion protection ability) was seen to depend on the electric field used for EPD. Corrosion studies in concentrated simulated body fluid (SBF5) demonstrated that the surface characteristics of AISI 316 L can be positively influenced by the chitosan coating. KW - Chitosan KW - Electrophoretic deposition KW - Biomaterials KW - Electrochemistry Y1 - 2012 U6 - https://doi.org/10.1016/j.matlet.2011.08.088 VL - 66 IS - 1 SP - 302 EP - 304 ER - TY - JOUR A1 - Heese, Carl T1 - Psychisch krank in der Schulbank JF - AGORA KW - Schule KW - Psychische Gesundheit Y1 - 2007 VL - Jg. 23 IS - 1 SP - 30 EP - 31 PB - Kath. Universität Eichstätt ER - TY - CHAP A1 - Nonn, Aida A1 - Cerrone, Albert R. A1 - Stallybrass, C. A1 - Meuser, H. T1 - Microstructure-based modeling of high-strength linepipe steels T2 - 6th Pipeline Technology Conference 2013, 6-9 October, Ostend, Belgium N2 - HE MODERN LONGITUDINALLY WELDED pipes with new generation of steel materials exhibit excellent mechanical properties due to the continuous improvements in thermomechanical controlled processing of plates (TMCP) and pipe (UOE) production processes. While the adjustment of process parameters allows for optimized design of microstructure, safe installation and operation of these pipes for long distance, gas transmission pipelines require a detailed knowledge and characterization of their deformation and fracture performance for specific application. Although the influence of texture on the material properties can be qualitatively estimated, a quantitative link between the microstructural constituents and mechanical behavior is still missing. This paper aims to present the procedure for the development of microstructure-based model to quantitatively describe the mechanical behavior of bainitic X80 pipeline steel. In the first step, the metallographic analysis is conducted to identify the microstructural characteristics, such as volume fractions of microstructure constituents (granular and lower bainite, M-A phase) and their distributions. The strength properties in terms of flow curves are determined by tensile tests on mini-flat and round bar specimens with different sizes. Subsequently, a 2D three-phase model is developed based on the results from the quantitative analyses of microstructure with each phase modeled using the von-Mises plasticity theory. The flow curves of single phases are estimated by considering experimental findings, the chemical composition and microstructural description of each phase. This 2D FE model is then applied to predict ielding and hardening behavior. In addition to the 2D three-phase model, a 3D two-phase model is developed for the purposes of exploring the viability of using a spectral solver to analyze X80 synthetic microstructures. Here, the FFT-based approach is compared against the crystal-plastic finite-element method. The results contribute to a better understanding of the mechanical behavior and allow a more precise microstructure design of the bainitic steels. Y1 - 2013 U6 - https://doi.org/10.13140/2.1.2797.4404 ER - TY - CHAP A1 - Nonn, Aida A1 - Erdelen-Peppler, Marion A1 - Kalwa, Christoph T1 - Numerical and experimental investigation of the influence of HAZ on the fracture behavior of longitudinal welded linepipes T2 - 18th European Conference on Fracture, Fracture of Materials and Structures from Micro to Macro Scale, Dresden, Germany N2 - The present paper deals with the influence of heat affected zone (henceforth HAZ) on the fracture performance of longitudinal welded linepipes in dependence on constraint level. It has been shown that toughness values of HAZ obtained from standard fracture mechanics tests lead to uneconomic linepipe design for two reasons. The first reason is that laboratory specimens with higher constraint level generally exhibit lower fracture resistance compared to flawed linepipes. The second one has to do with a higher probability of cleavage failure occurrence in the laboratory specimen than in the linepipes due to larger areas of lower toughness (so called local brittle zones (LBZ)) intersected by crack front. In recent years numerous studies have been initiated with the objective to quantify the constraint level and thus to allow for less conservative linepipe safety assessment by applying constraint corrected toughness values. However, the main focus of these studies has hitherto been on the homogeneous materials, failing to account for the possible effects of different microstructures within the heterogeneous HAZ. This paper seeks to close this gap by reporting on results from tests on fracture mechanics specimens of a high strength X80 steel, i.e. SENB and SENT specimens as well as results from ring expansion tests. Both, deep and shallow cracks are inserted in the fracture mechanics specimens and rings targeting the fusion line (FL). By varying the initial crack size and sample type, different constraint levels are achieved and subsequently quantified using numerical methods. Besides constraint observations, post metallographic analyses are performed to identify exact HAZ microstructure involved at the crack tip. Finally, the influence of HAZ properties, flaw size and geometry on the failure behaviour of the linepipes has been demonstrated and assessed. Based on the combination of the results from constraint studies and the post metallographic analyses, the methodology is proposed which enables simple quantitative prediction of toughness values for safe and economic design of linepipes with flaws located in HAZ. KW - X80 KW - HAZ KW - constraint analysis KW - linepipe safety KW - LSAW linepipe KW - local brittle zones KW - finite element modeling Y1 - 2010 UR - https://www.gruppofrattura.it/ocs/index.php/esis/ECF18/paper/viewFile/6273/2143 ER - TY - CHAP A1 - Nonn, Aida A1 - Kalwa, Christoph T1 - Analysis of dynamic ductile fracture propagation in pipeline steels BT - a damage mechanics approach T2 - 6th Pipeline Technology Conference (2013), Ostend, Belgium N2 - Analysis of dynamic ductile fracture propagation in pipeline steels: a damage-T IS A WELL-ESTABLISHED fact that the successful application of new generation of high-strength steel grades for long-distance gas transmission depends strongly on full understanding and appropriate characterization of fracture resistance. A damage mechanics approach has found to be a very promising tool in supporting the experimental characterization of ductile fracture propagation. The major advantage of this approach lies in the consideration of the influence of local stress and strain variables on the damage evolution and thus its capability to describe the fracture resistance of the pipelines with different stress triaxiality level by using the same set of parameters. However, the wider application of this approach has been limited due to the issues such as reliable determination of input parameters and required material properties, mesh size dependence, etc.. The objective of this paper is to characterize dynamic ductile fracture resistance of X65 and X80 pipeline materials and to demonstrate the potential of damage mechanics approach for the simulation of dynamic fracture propagation by using two damage models: (1) Cohesive Zone (CZ) model and (2) Gurson-Tvergaard-Needleman (GTN) model. In the first step, results from quasi-static and dynamic tensile tests are used to describe plasticity in terms of flow curves. The calibration of input parameters for both models is performed by using the load-deformation curves from quasi-static tests on non-standard drop-weight tear (DWT) specimens with pre-fatigued crack. b. In the next step, estimated damage model parameters are verified by means of the dynamic tests on the pressed and Chevron notch DWT specimens. Different amounts of crack growth are established by varying the drop height. The experimental fracture resistance is quantified in terms of J-integral at specific crack length. The numerical results are evaluated with respect to global load-deformation and fracture resistance behavior. Furthermore, damage simulations are applied for quantification of local stress conditions in order to identify the major factors controlling the crack propagation. The results reported here serve as a basis for better understanding of fracture performance in dependences of geometry and material properties. Y1 - 2013 U6 - https://doi.org/10.13140/2.1.4370.3046 ER - TY - CHAP A1 - Nonn, Aida A1 - Erdelen-Peppler, Marion A1 - Wessel, Waldemar A1 - Harksen, Silke A1 - Mahn, Denise T1 - How to assure fracture-propagation control for seamless gas pipelines? T2 - Proceedings of the 2014 10th International Pipeline Conference (IPC2014), Volume 3: Operations, Monitoring, and Maintenance, Materials and Joining, September 29-October 3, 2014, Calgary, Canada N2 - Fracture propagation control in gas transmission gas pipelines belongs to the major design requirements for safe operation at high internal pressures. However, the current tests such as Drop-Weight-Tear Test (DWTT) and full-scale West-Jefferson (WJ) test reach the limits of their applicability with respect to transition temperature evaluation for seamless quenched and tempered small diameter pipes reflecting nowadays alloying concepts related to mechanical properties. Hereby, different geometry and material effects are evident which might lead to misinterpretation and unreliability of testing results. This paper aims to discuss open issues addressed in the literature and in own experimental findings with respect to reliability and transferability of testing methods, fracture parameters and their representativeness of seamless quenched and tempered pipeline behavior. By applying damage mechanics approach, it is possible to quantify the prevailing stress state and thus to understand the mechanisms controlling specific fracture appearance (ductile or brittle). Furthermore, studies were performed with objective to quantify the effect of different parameters (geometry, material and loading) on the fracture performance of the pipeline. The results from these investigations will serve as a basis for a safe pipeline design against propagating fracture. Y1 - 2014 U6 - https://doi.org/10.1115/IPC2014-33169 ER - TY - CHAP A1 - Nonn, Aida A1 - Kalwa, Christoph T1 - Simulation of ductile crack propagation in high-strength pipeline steel using damage models T2 - 9th International Pipeline Conference 2012 (IPC 2012), Calgary, Canada N2 - The performance of engineering design of high-strength steel pipelines has revealed the necessity to revise current design procedures. Therefore, an improved and detailed comprehension of fracture mechanisms and development of failure prediction tools are required in order to derive new design criteria. In last decades the most successful failure prediction tools for steel structures subjected to various type of loading can be encountered in the field of damage mechanics. This paper aims to describe ductile fracture behavior of high-strength steel pipelines by applying three different damage models, Gurson-Tvergaard-Needelman (GTN), Fracture Locus Curve (FLC) and Cohesive Zone (CZ). These models are evaluated regarding their capability to estimate ductile crack propagation in laboratory specimens and linepipe components without adjusting the calibrated parameters. It can be shown that appropriate parameter sets can be identified to reproduce load-deformation and fracture resistance curves accurately. The strain rate effect on the fracture behavior is examined by dynamic tests on the BDWT specimens. Finally, the shortcomings of the applied models are pointed out with the reference to possible extensions and modifications. Y1 - 2012 U6 - https://doi.org/10.1115/IPC2012-90653 ER - TY - JOUR A1 - Cerrone, Albert R. A1 - Wawrzynek, Paul A1 - Nonn, Aida A1 - Paulino, Glaucio H. A1 - Ingraffea, Anthony T1 - Implementation and verification of the Park–Paulino–Roesler cohesive zone model in 3D JF - Engineering Fracture Mechanics N2 - The Park–Paulino–Roesler (PPR) potential-based model is a cohesive constitutive model formulated to be consistent under a high degree of mode-mixity. Herein, the PPR’s generalization to three-dimensions is detailed, its implementation in a finite element framework is discussed, and its use in single-core and high performance computing (HPC) applications is demonstrated. The PPR model is shown to be an effective constitutive model to account for crack nucleation and propagation in a variety of applications including adhesives, composites, linepipe steel, and microstructures. KW - Cohesive zone modeling KW - Cohesive element KW - Intergranular fracture KW - Finite element analysis KW - PPR potential-based model Y1 - 2014 U6 - https://doi.org/10.1016/j.engfracmech.2014.03.010 VL - 120 SP - 26 EP - 42 ER - TY - CHAP A1 - Völling, Alexander A1 - Nonn, Aida A1 - Schneider, Ingo T1 - Anwendung des Kohäsivzonenmodells zur Abbildung von duktilem dynamischen Rissfortschritt in Gasfernleitungen T2 - 45. Tagung des AK Bruch, Berlin, Germany KW - Ferngasleitung KW - Rissfortschritt Y1 - 2013 SP - 253 EP - 262 ER - TY - CHAP A1 - Nonn, Aida A1 - Kalwa, Christoph T1 - Modeling of damage behavior of high strength pipeline steel T2 - 18th European Conference on Fractur: Fracture of Materials and Structures from Micro to Macro Scale, August 30 - September 03, 2010, Dresden, Germany Y1 - 2010 ER - TY - CHAP A1 - Nonn, Aida T1 - Failure modeling of hybrid-laser welds in transition temperature region T2 - 18th European Conference on Fracture, Fracture of Materials and Structures from Micro to Macro Scale, August 30 - September 03, 2010 Dresden, Germany Y1 - 2010 CY - Dresden ER - TY - CHAP A1 - Nonn, Aida A1 - Wessel, Waldemar A1 - Schmidt, Tanja T1 - Application of finite element analysis for assessment of fracture behavior of modern high toughness seamless pipeline steels T2 - 23rd International Society of Offshore and Polar Engineering 2013 (ISOPE 2013), Anchorage, USA N2 - Fracture behavior of seamless pipeline material X65Q acc. to API 5L has been studied both experimentally and numerically at different loading conditions (quasi-static vs. dynamic) and temperatures. The recent findings have shown difficulties in applying well established methods for determination of transition behavior or prediction of ductile crack arrest for the new generation of high-toughness steels. The irregular fracture performance (e.g. so-called "abnormal inverse fracture" appearance, significant scattering in ductile-to-brittle-transition-temperature region, etc.) suggests that the influence of pipe dimensions, loading parameters, crack initiation resistance as well as testing procedure on the fracture behavior has been neither understood nor properly described. This work aims to shed light on these questions regarding the applicability of conventional methods and to better illuminate most relevant parameters affecting fracture behavior of high toughness steels. To achieve this goal, experimental data basis for analysis of fracture behavior in transition and upper shelf regime has been established by conducting quasi-static fracture mechanics tests and dynamic tests on Battelle Drop Weight Tear (BDWT or DWT) specimens at different temperatures. The evaluation of obtained test results in upper shelf has been additionally complemented by numerical simulation of damage behavior. The results highlight the influence of stress conditions on fracture behavior with reference to pipe dimensions and loading conditions and, subsequently, may be used as a basis for revision of existing design methods. KW - Rissfortschritt KW - Nahtloses Rohr KW - Pipeline KW - Bruchmechanische Prüfung KW - Finite-Elemente-Methode Y1 - 2013 U6 - https://doi.org/10.13140/2.1.4239.2322 ER - TY - CHAP A1 - Kofiani, Kirki A1 - Nonn, Aida A1 - Wierzbicki, Tomasz A1 - Kalwa, Christoph A1 - Walters, Carey T1 - Experiments and fracture modeling of high-strength pipelines for high and low stress triaxiality T2 - 22nd International Society of Offshore and Polar Engineering 2012 (ISOPE 2012), Rhodes, Greece, June 2012 N2 - This paper provides results from a comprehensive study on mechanical characterization of high-strength pipeline steel, grade X100 using experimental and numerical methods. The material was characterized for anisotropic plasticity, fracture initiation for various states of stress, (pre-cracked) fracture toughness and uncracked ductility. The experimental program included tests on flat butterfly-shaped, central hole, notched and circular disk specimens for low stress triaxiality levels; as well as tests on round notched bar specimens and SENT fracture mechanics tests, for high values of stress triaxiality. This program covered a wide range of stress conditions and demonstrated its effect on the material resistance. Parallel to the experimental study, detailed numerical investigations were carried out to simulate all different experimental tests. Using an inverse method, a 3-parameter calibration was performed on the Modified Mohr-Coulomb (MMC) fracture model. Subsequently, the predictive capabilities of the MMC were evaluated by the comparison to the fracture toughness tests results, used extensively in the pipeline industry. The capabilities of the MIT fracture model have been demonstrated on an example of high strength offshore steel, X100. The outcome of this study was not only to provide, the overall characterization of the fracture behavior of this material as an example, but also to present the methodology on how to use the MMC model as a practical tool in pipeline design. Y1 - 2012 ER - TY - CHAP A1 - Nonn, Aida A1 - Kalwa, Christoph T1 - Failure modeling of pipeline X100 Material in temperature transition region T2 - 22nd International Society of Offshore and Polar Engineering 2012 (ISOPE 2012), Rhodes, Greece N2 - This paper focuses on the characterization of the fracture performance of X100 material in transition temperature region using both experimental and numerical methods. The ductile fracture has been analyzed using tests on round notched bar specimens and standard fracture mechanics tests performed at room temperature. In previous publications the damage model Gurson-Tvergaard-Needleman (GTN) has been applied and verified by existing experimental data to describe ductile fracture behavior. The brittle fracture and the fracture in temperature transition region have been studied by means of deep and shallow notched SENB specimens at two different temperatures T=- 80°C and -40°C. Besides elastic-plastic analyses to quantify constraint levels for different initial crack configurations at the onset of cleavage fracture, the brittle failure has been described using modified Beremin model. The influence of the stable crack growth on the cleavage failure probability in temperature transition region has been captured by coupling the ductile fracture model (GTN) with the modified Beremin model. Finally, examples have been presented for the practical application of the numerical results on the fracture assessment of the flawed high-strength pipelines. Y1 - 2012 ER - TY - CHAP A1 - Nonn, Aida A1 - Kalwa, Christoph T1 - The effect of microstructure, strain hardening and strain rate on the fracture behavior of high strength pipeline steels T2 - 2nd International Conference on Material Modelling (ICMM2), 31th August - 2nd September, 2011 at Mines Paris Tech, France Y1 - 2011 ER - TY - CHAP A1 - Nonn, Aida A1 - Kalwa, Christoph T1 - Application of damage mechanics approach for crack propagation in pipeline T2 - 19th Biennial Joint Technical Meeting (JTM) on Pipeline Research, April 29 - May 3, 2013, Sydney, Australia Y1 - 2013 ER - TY - CHAP A1 - Nonn, Aida A1 - Kalwa, Christoph T1 - Application of probabilistic fracture mechanics for safety assessment of longitudinally welded linepipes T2 - 6th Pipeline Technology Conference (2013), Ostend, Belgium Y1 - 2013 ER - TY - CHAP A1 - Nonn, Aida A1 - Völling, Alexander T1 - Lokale Spannungsanalyse bei Rissinitiierung T2 - 4. Workshop Kompetenzverbund Kerntechnik "Komponentensicherheit und Werkstoffverhalten", MPA Stuttgart, Germany KW - Rissverhalten KW - Spannungsanalyse Y1 - 2006 ER - TY - JOUR A1 - van den Heede, Philip A1 - Thiel, Charlotte A1 - de Belie, Nele T1 - Natural and accelerated carbonation behaviour of high-volume fly ash (HVFA) mortar: Effects on internal moisture, microstructure and carbonated phase proportioning JF - Cement and Concrete Composites N2 - Binders with large portions of carbon-intensive Portland cement replaced by supplementary cementitious materials (e.g. fly ash) are more susceptible to carbonation mainly due to their lower CO2 buffering capacity. This conclusion is usually drawn from accelerated experiments at elevated CO2 levels involving processes that seriously differ from natural carbonation. The resulting presence of H2O reactant in the pore system and the carbonated microstructure itself may be very different. In this paper, these phenomena were investigated for High-Volume Fly Ash (HVFA) mortar via carbonation tests at ±0.04% CO2 (natural carbonation), 1% CO2 and 10% CO2. Internal humidity sensor monitoring and 1H NMR relaxometry revealed the highest water vapour and liquid water contents after carbonation at 10% CO2. Carbonation at 10% CO2 results in a coarser pore structure than carbonation at 1% CO2, and this probably due to a higher degree of C–S–H carbonation. KW - 1H NMR relaxometry KW - Carbonation KW - Mercury intrusion porosimetry KW - Moisture sensors KW - Multi-ring electrodes KW - Thermogravimetric analysis Y1 - 2020 U6 - https://doi.org/10.1016/j.cemconcomp.2020.103713 VL - 113 IS - October PB - Elsevier ER - TY - GEN A1 - Saad, Amr Mohamed Roushdy A1 - Löw, M.-O. A1 - Stoll, O. A1 - Schliermann, Rainer A1 - Badran, A. ED - Wegner, Manfred ED - Brückner, Jan-Peter ED - Kratzenstein, Stefan T1 - Perfektionismus im Sport, Validierung eines Messinstruments und Überprüfung der Wirksamkeit eines Entspannungsverfahrens T2 - Sportpsychologische Kompetenz und Verantwortung : 44. Jahrestagung der Arbeitsgemeinschaft für Sportpsychologie (asp) vom 17. - 19. Mai in Kiel/Oslo (Abstractband) Y1 - 2012 SN - 978-3-88020-585-7 PB - Feldhaus, Edition Czwalina CY - Hamburg ER - TY - THES A1 - Haug, Sonja T1 - Frameselektion und Strategieselektion BT - Erweiterte Modelle rationaler Handlungsentscheidungen Y1 - 1995 N1 - Universität Mannheim, Diplomarbeit CY - Mannheim ER - TY - JOUR A1 - Heese, Carl A1 - Preger, Rudoph T1 - Die Einführung des Patientenorientierten Flussprinzips in der Neurologischen Rehabilitation JF - Das Krankenhaus KW - Krankenhausmanagement KW - Rehabilitation Y1 - 2003 VL - Band 95 IS - H. 4 SP - 297 EP - 305 PB - Kohlhammer CY - Stuttgart ER - TY - JOUR A1 - Schliermann, Rainer A1 - Klein, Petra A1 - Schulze, Annnette T1 - Deaflympischer Sport – die unbekannte Sportbewegung JF - Leistungssport : Zeitschrift für die Fortbildung von Trainern, Übungsleitern und Sportlehrern N2 - Der deaflympische Sport (Syn.: Gehörlosensport) ist sowohl in der medialen als auch in der sportaktiven Öffentlichkeit weithin unbekannt. Der paralympische Behindertensport wird zunehmend stärker beachtet, der deaflympische hingegen insgesamt wenig. Im vorliegenden Beitrag wird deshalb ein Überblick gegeben. Es wird zunächst dessen geschichtliche Entwicklung näher beschrieben und verdeutlicht, dass der institutionalisierte Sport von Athleten mit Hörbeeinträchtigungen die längste Tradition im Behindertensport aufweist. Außerdem erfolgt eine Beschreibung der institutionellen Rahmenbedingungen dieser Sportbewegung. Dabei ist hervorzuheben, dass für die Belange des Leistungssports von Menschen mit Hörbeeinträchtigungen der Deutsche GehörlosenSportverband (DGS) und nicht der Deutsche Behindertensportverband (DBS) zuständig ist, da es sich beim deaflympischen Sport um eine historisch gewachsene, eigenständige Sportbewegung handelt. Die weiteren Ausführungen betreffen Aspekte zum Training und Wettkampf von Athleten mit Hörschädigungen. Um an Wettkämpfen im Gehörlosensport teilnehmen zu dürfen, muss ein Mindestmaß an Hörminderung vorliegen. Die Teilnahme an hochrangigen (internationalen) Wettkämpfen (z. B. Deaflympics) erfordert dann – wie im Spitzensport generell – ein systematisches und regelmäßiges Training. In Bezug auf Athleten mit Hörminderungen bedeutet dies insbesondere eine bestimmte Art der Kommunikation, des Vermittelns bzw. Erlernens (neuer) Bewegungen sowie die Beachtung etwaiger Einschränkungen der Gleichgewichtsfähigkeit. Auf diese Aspekte wird in diesem Übersichtsbeitrag ausführlich eingegangen. Es wird unter anderem verdeutlicht, dass „gehörlose“ Sportler häufig durchaus noch über ein Resthörvermögen verfügen. Außerdem erfordert das Training eine bestimmte Art der Kommunikation zwischen Trainer und Athlet, um effektiv im Sinne einer Leistungsentwicklung sein zu können. Schließlich gehen mit Höreinschränkungen häufig auch Defizite der Gleichgewichtsfähigkeit einher, die jedoch nicht a priori vorhanden sind und sich durch Training verbessern lassen. Im Resümee wird nochmals herausgestellt, weshalb Grundkenntnisse über den deaflympischen Sport nicht nur zur Leistungsentwicklung hörgeschädigter Spitzenathleten beitragen, sondern auch Trainern und Vereinen des Regelsportsystems des Deutschen Olympischen Sportbundes (DOSB) nützlich sein können. Y1 - 2016 UR - https://www.iat.uni-leipzig.de/datenbanken/iks/open_archive/ls/lsp16_04_39_44.pdf? SN - 0341-7387 VL - 46 IS - 4 SP - 39 EP - 44 PB - Philippka-Verlag CY - Münster ER - TY - CHAP A1 - Zilch, Konrad A1 - Niedermeier, Roland A1 - Finckh, Wolfgang ED - Bergmeister, Konrad ED - Fingerloos, Frank ED - Wörner, Johann-Dietrich T1 - Verstärken von Betonbauteilen mit geklebter Bewehrung - Erläuterungen zur DAfStb-Richtlinie T2 - Beton-Kalender 2013 : Lebensdauer und Instandsetzung, Brandschutz Y1 - 2014 SN - 978-3-433-60546-2 U6 - https://doi.org/10.1002/9783433602591.ch6 SP - 469 EP - 552 PB - Ernst & Sohn CY - Berlin ER - TY - CHAP A1 - Singh, Max Diamond A1 - Capanni, Felix ED - Pfannstiel Mario A., ED - Da-Cruz, Patrick ED - Rasche, Christoph T1 - Medizintechnik-Spin-offs aus der Hochschule - Ein Prozessbeispiel T2 - Entrepreneurship im Gesundheitswesen II N2 - Die Aufmerksamkeit für Unternehmensgründungen hat in den letzten Jahren extrem zugenommen. Grundsätzlich muss ein Start-up in einem kompetitiven Umfeld erfolgreich sein, um bestehen zu können. Der Weg dorthin wird maßgeblich beeinflusst durch Planung und finanzielle Ressourcen, die die Gründer bereitstellen müssen. In der Medizinprodukteindustrie kommen zusätzlich große Hürden hinzu, die u. a. einen kurzen Produktlebenszyklus, lange Projektlaufzeiten, aufwendige klinische Studien und aktuell neue gesetzliche Verordnungen betreffen. Dieser Beitrag konzentriert sich zunächst auf mögliche Fördermittel und Beratung von Start-up-Projekten aus dem Hochschulbereich. Aus einer Analyse derzeit existierender Gründerwettbewerbe im Hinblick auf das Gesundheitswesen werden dem Leser entsprechende Adressen zum Einwerben von Fördermitteln geliefert. Darüber hinaus wird ein Pilot-Prozess vorgestellt, wie eine Ausgründungsberatung an der Hochschule Ulm im Studiengang Medizintechnik derzeit verläuft. Dies kann möglicherweise ein Anknüpfungspunkt für eine zukünftige Institutionalisierung von Spin-off-Vorhaben aus dem Hochschulbereich sein. Y1 - 2018 SN - 978-3-658-14781-5 SN - 978-3-658-14780-8 PB - Springer Gabler CY - Wiesbaden ER - TY - RPRT A1 - Heese, Carl A1 - Schmidt, Hans-Ludwig A1 - Preger, Rudolph T1 - Patientenorientierte Versorgung im Team - POVIT BT - Ein Forschungsbericht aus der Neurochirurgischen und Neurologischen Klinik Kipfenberg KW - Organisationsentwicklung KW - Personalentwicklung KW - Rehabilitation KW - Krankenhausmanagement Y1 - 2003 UR - 3-927728-61-6 PB - BPB CY - Eichstätt ER - TY - JOUR A1 - Heese, Carl T1 - Schulentwicklung durch "Persönliche Projekte" JF - Schul-Managment: Die Zeitschrift für Schulleitung und Schulpraxis KW - Schulmanagment Y1 - 2010 SN - 0341-8235 VL - 41 IS - 5 SP - 27 EP - 29 PB - Cornelsen Schulverlage CY - München ER - TY - JOUR A1 - Heese, Carl A1 - Stein, Margit T1 - Das Prader-Willi-Labhart-Syndrom BT - Erscheinungsweise und Vorkommen JF - Sonderpädagogik KW - Genetisches Syndrom KW - Heilpädagogik Y1 - 2002 VL - Bd. 32 IS - H. 2 SP - 89 EP - 90 PB - Marhold CY - Berlin ER - TY - CHAP A1 - Meyer-Sickendiek, Burkhard A1 - Hussein, Hussein A1 - Baumann, Timo ED - Berton, André ED - Haiber, Udo ED - Minker, Wolfgang T1 - Recognizing Modern Sound Poetry with LSTM Networks T2 - Proceedings of Elektronische Sprachsignalverarbeitung (ESSV) N2 - Our paper focuses on the computational analysis of “readout poetry” (german: Hördichtung) – recordings of poets reading their own work – with regards to the most important type of this genre, the modern “sound poetry” (german: Lautdichtung). Whereas “readout poetry” often uses normal words and sentences, the “sound poetry”, developed by dadaistic poets like Hugo Ball and Kurt Schwitters or concrete poets like Ernst Jandl, Oskar Pastior, or Bob Cobbing, combines the “microparticles of the human voice” like the segments in Ernst Jandls sound poem “schtzngrmm” (“schtzngrmm / schtzngrmm / tttt / tttt / grrrmmmmm / tttt / sch / tzngrmm”). Within the genre of sound poetry, there are two main forms: The lettristic and the syllabic decomposition. A short anecdote will explain this difference: The dadaist Raoul Hausmann developed the lettristic sound poetry in his early dadaistic poem “fmsbw” from 1918. This is said to have inspired his successor Schwitters, whose famous “Ursonate” [The Sonata in Primal Speech] begins with the words “Fümms bö wö tää zää Uu”. With the “Ursonate”, Schwitters developed a syllabic variation of the lettristic poems of Hausmann. The paper shows how to train a bidirectional LSTM network in order to differ between these “dadaistic” sound poems and the “normal” read out poems. In a further step, we will also show how to distinguish between the lettristic and the syllabic decomposition. Based on a bidirectional LSTM network that reads encodings of the character sequence in the poem and uses the output of each directional layer, we identify poems of the sound poetry genre and differentiate between its two types of compositions. The classification results of sound poetry vs. other poetry as well as lettristic vs. syllabic decomposition are with a high performance, yielding a f-scores of 0.86 and 0.84, respectively. KW - Sprachverarbeitung Y1 - 2018 UR - http://www.essv.de/paper.php?id=407 SN - 978-3-959081-28-3 SP - 192 EP - 199 PB - TUDpress CY - Ulm, Germany ER - TY - CHAP A1 - Heese, Carl A1 - Stein, Margit A1 - Schmidt, Hans-Ludwig ED - Heese, Carl ED - Schmidt, Hans-Ludwig ED - Preger, Rudoph T1 - Zielorientierung als Merkmal intelligenter Praxis und als transdisziplinäre und therapieintegrierende Einstellung T2 - Patientenorientierte Versorgung im Team - POVIT KW - Personalentwicklung KW - Rehabilitation Y1 - 2003 SN - 3-927728-61-6 SP - 39 EP - 48 PB - BPB-Verlag diritto Publikationen CY - Eichstätt ER - TY - JOUR A1 - Heese, Carl T1 - Die Nintendo WII als Hilfsmittel der Rehabilitation JF - Ergotherapie und Rehabilitation KW - Rehabilitation Y1 - 2010 SN - 0942-8623 VL - 12 SP - 13 EP - 19 PB - Schulz-Kirchner CY - Idstein ER - TY - RPRT A1 - Haug, Sonja T1 - Migration between Germany and the Central and Eastern European EC accession countries BT - External Migration – Analysing the development and consequences of the migration process Y1 - 2004 N1 - Attachment to the Final Report of the Twinning Light Project between the Federal Statistical Office of Germany and the National Statistical Institute of Bulgaria CY - Wiesbaden ER - TY - CHAP A1 - Singh, Max Diamond ED - Schwegel, Philipp ED - Da-Cruz, Patrick ED - Hemel, Ulrich ED - Oberender, Peter T1 - Produktmanagement in der Medizintechnik T2 - Medizinprodukte Management N2 - Das Management in der Medizinprodukteindustrie steht vor vielfältigen Herausforderungen. So sinken einerseits die Produktpreise, anderseits wird auch für die kommenden Jahre in vielen Segmenten ein Mengenwachstum erwartet. Dies stellt die internen Prozesse, vom Customer Service bis hin zur Forschung & Entwicklung, auf den Prüfstand. Die Entscheidungsträger auf Kundenseite verändern sich, weg vom Produktanwender hin zu professionellen Einkaufsgemeinschaften mit immer größerer Verhandlungsmacht. Der hohe Internationalisierungsgrad der Unternehmen führt zu einer steigenden Komplexität bei der Implementierung von Marketing-, Vertriebs- und Produktentwicklungsstrategien auf Länderebene. Darüber hinaus werden zunehmend neue Geschäftsmodelle mit hohem Dienstleistungsanteil entwickelt, die mit der traditionellen Lieferantenrolle wenig zu tun haben und von Managern eine neue Fähigkeiten für die Umsetzung erfordern. Die Autoren des Sammelbands greifen die genannten Herausforderungen auf und bieten mit ihren Beiträgen Lösungsansätze, die sowohl für Manager im Medizinprodukteunternehmen als auch für Wissenschaftler und Studierende relevant sind. Y1 - 2014 SN - 978-3-941678-47-7 SP - 148 EP - 161 PB - PCO-Verlag CY - Bayreuth ER - TY - CHAP A1 - Schliermann, Rainer ED - Wegner, Manfred ED - Scheid, Volker ED - Knoll, Michaela T1 - Leistungssport von Athletinnen und Athleten mit Behinderungen T2 - Handbuch Behinderung und Sport Y1 - 2015 SN - 978-3-7780-4880-1 SP - 238 EP - 247 PB - Hofmann CY - Schorndorf ER - TY - GEN A1 - Schliermann, Rainer A1 - Saad, A. R. ED - Ohlert, Jeannine ED - Kleinert, Jens T1 - Evaluation einer von Trainern durchgeführten psychologischen Intervention am Beispiel der Sportart Rollstuhlbasketball T2 - Sport vereinT : Psychologie und Bewegung in Gesellschaft ; 43. Jahrestagung der Arbeitsgemeinschaft für Sportpsychologie (asp) vom 2.-4. Juni 2011 in Köln ; Abstractband KW - Vereinssport KW - Sportpsychologie Y1 - 2011 SN - 978-3-88020-566-6 SN - 3880205663 PB - Feldhaus, Edition Czwalina CY - Hamburg ER - TY - CHAP A1 - Heese, Carl A1 - Thaler, Tilman A1 - Thaler, Philipp T1 - Der PARO in der neurologischen Frührehabilitation. T2 - Neurologie & Rehabilitation KW - Neurorehabiltation Y1 - 2017 SN - 1869-7003 VL - Bd. 23 IS - Suppl. 1 SP - 37 PB - Hippocampus CY - Bad Honnef ER - TY - RPRT A1 - Haug, Sonja ED - Urban (Hrsg.), Dieter T1 - Analysen zur BFE-Studie Nr. U5797.1.2 aus MTU 517 aus dem Jahre 1990 T2 - Wahrnehmung und Bewertung von gentechnisch erzeugten Lebensmitteln. Eine Sekundär-Auswertung von drei Bevölkerungsumfragen im Auftrag der Bundesforschungsanstalt für Ernährung (BFE) Y1 - 1996 N1 - unveröffentlichter Bericht SP - 37 EP - 66 CY - Stuttgart ER - TY - CHAP A1 - Haug, Sonja A1 - Pichler, Edith ED - Motte, Jan ED - Ohlinger, Rainer ED - von Oswald, Anne T1 - Soziale Netzwerke und Transnationalität BT - Neue Ansätze für die historische Migrationsforschung T2 - 50 Jahre Bundesrepublik - 50 Jahre Einwanderung: Nachkriegsgeschichte als Migrationsgeschichte Y1 - 1999 SN - 3-593-36369-0 SP - 259 EP - 284 PB - Campus CY - Frankfurt am Main ER - TY - GEN A1 - Kuntner, Katrin Petra A1 - Schütz, Sandra T1 - Machen Sie sich ein Bild von KOSA! BT - Orientierende Validierung des Bildmaterials der „KOmmunikations-orientierte(n) Selbstbeurteilung bei Aphasie“ mit einer Kontrollgruppe T2 - Jahrestagung der Gesellschaft für Aphasieforschung und -behandlung (GAB), 15., November 2015, Innsbruck/Österreich Y1 - 2015 ER - TY - CHAP A1 - Heese, Carl A1 - Stein, Margit ED - Holz, H. ED - Schremme, D. T1 - Evaluationsansätze in der Modellversuchsforschung T2 - Wissenschaftliche Begleitforschung bei der Neugestaltung des Lernens KW - Berufliche Bildung Y1 - 2005 SN - 9783763910496 SP - 221 EP - 230 PB - Bertelsmann CY - Bielefeld ER - TY - CHAP A1 - Heese, Carl ED - Heese, Carl ED - Schmidt, Hans-Ludwig ED - Preger, Rudoph T1 - Das Goal-Attainment-Scaling (GAS) in der Rehabilitation BT - Ein Probelauf in der Klinik Kipfenberg KW - Organisationsentwicklung KW - Rehabilitation Y1 - 2003 SP - 49 EP - 82 PB - BPB CY - Eichstätt ER - TY - JOUR A1 - Schliermann, Rainer A1 - Stoll, Oliver T1 - Entwicklung und Evaluation einer trainerzentrierten Form des Mentalen Trainings im Rollstuhlbasketball JF - BISp-Jahrbuch Forschungsförderung 2009/10 Y1 - 2011 UR - https://www.bisp.de/SharedDocs/Downloads/Publikationen/Jahrbuch/Jahrbuch_2009_10_Inhalt.html SP - 119 EP - 122 PB - Bundesinstitut für Sportwissenschaft (BISp) CY - Bonn ER - TY - CHAP A1 - Heese, Carl ED - Mührel, Eric ED - Birgmeier, Bernd T1 - Bildung im Alter als Lebens-Kritik: Die Aktualität Franz Pöggelers für die Geragogik T2 - Perspektiven sozialpädagogischer Forschung N2 - Die Bildung alter Menschen hat Franz Pöggeler vor einem halben Jahrhundert als noch ungelöste Aufgabe erkannt und in einer umfassenden Weise anthropologisch begründet. Seine Konzeption einer ‚abschließenden Bildung‘ für die letzten Lebensphasen ist spirituell, aber nicht konfessionell geprägt, methodisch-didaktisch setzt sie entschieden auf Informalität. Im Vergleich zum Zeitpunkt der Entstehung dieses Entwurfs sind heute auch Ältere reguläre Adressaten der Bildungsarbeit geworden, im Rahmen des Lebenslangen Lernens werden sie aber anders als bei Pöggeler eher nach dem Muster einer ‚vorbereitenden Bildung‘ angesprochen. Spezifische Bildungsbedürfnisse des Alters werden dabei nicht ausreichend berücksichtigt. Mit der Begründung einer empirischen Weisheitstheorie und der Öffnung der Gerontologie für spirituelle Fragen zeigt sich inzwischen der Ansatz Pöggelers in einer hohen Aktualität. Auch seine methodisch-didaktische Leitvorstellung kann in den aktuellen Entwicklungen der Erinnerungsarbeit wiederentdeckt werden. Sie erfährt hier aber auch eine Fortentwicklung unter Berücksichtigung der Erkenntnisse zum lebensgeschichtlichen Reminiszieren. KW - Geragogik Y1 - 2014 SN - 978-3-658-01889-4 U6 - https://doi.org/10.1007/978-3-658-01889-4_17 SP - 293 EP - 302 PB - Springer CY - Wiesbaden ET - 1. Aufl. ER - TY - CHAP A1 - Haug, Sonja A1 - Weber, Karsten T1 - Kaufen oder Tauschen? Reziprozität und rationales Handeln bei Tauschvorgängen unter Freunden und in Internet-Tauschbörsen T2 - Jahrbuch für Handlungs- und Entscheidungstheorie 2/2002 N2 - Im Internet haben sich eine Reihe von Tauschringen etabliert, die den nichtkommerziellen Tausch von Musik und Software ermöglichen — und sich dabei in einer rechtlichen Grauzone oder in der Illegalität bewegen. Die Teilnehmer, die zur Entstehung und Aufrechterhaltung dieser Art von „Kollektivgut“ beitragen, nehmen Kosten und Risiken auf sich, obwohl keinerlei finanzielle Anreize und keine Sanktionsmöglichkeiten bei Verletzung der Reziprozität existieren. Diese Entwicklung stellt in vielfacher Hinsicht eine besondere Tatsache dar. Das Internet kann als prototypisch für eine faktisch anonyme Begegnungsstätte gesehen werden, innerhalb derer die Lösung des Vertrauensproblems beim Tausch zwischen unbekannten Akteuren oder die Verhinderung von Trittbrettfahrern besonders unwahrscheinlich ist. Modernitätskritiker behaupten deshalb, dass eine Gefahr für die Gesellschaft besteht, wenn im Internet zwischenmenschliche Kontakte vermehrt durch unpersönliche Transaktionen ohne jeden Verpflichtungscharakter ersetzt werden, da Treffen in elektronischen Foren nicht mit realen Kontakten gleichzusetzen seien (Putnam 1999: 67). Die Vertreter der Free Speech-Bewegung halten dagegen, dass gerade das Internet zur Entstehung von Gemeinschaften beiträgt, da es die engen Grenzen herkömmlicher Normen- und Kontrollsysteme überwindet. Können moderne Tauschringe im Internet als ein Indikator für die Entstehung von einer neuen Art von Kooperation und Gemeinschaftlichkeit betrachtet werden, wie dies von Enthusiasten der „Virtual Community“ (Rheingold 2000) oder Betrachtern der „Community in Cyberspace“ (Smith, Kollock 1999) postuliert wird? Entstehen bei den Beteiligten moralische Einstellungen und Normen wie die sogenannte „Hackerethik“ (Himanen 2001), die das Verhalten im Internet leiten und so zum Beispiel Trittbrettfahrertum erfolgreich verhindern? Oder zeigen die weitgehend oder völlig auf Anonymität basierenden sozialen Netzwerke im Internet, dass Interaktions- und Tauschsysteme mit rationalen Akteuren auch ohne jegliche moralische Unterfütterung funktionieren können, wie dies von Vertretern der Rational-Choice-Theorie postuliert und innerhalb des theoretischen Rahmens der Spieltheorie experimentell untersucht wird? Wie lassen sich die Handlungen von Teilnehmern an Internet-Tauschbörsen beschreiben und was motiviert sie? Diese Fragen sollen im folgenden Beitrag anhand eines empirischen Beispiels, dem Musik-Tausch per kopierter CD und per MP3 im Internet, untersucht werden. Y1 - 2003 U6 - https://doi.org/10.1007/978-3-322-97555-3_4 SP - 53 EP - 90 PB - Leske+Budrich CY - Opladen ER - TY - CHAP A1 - Haug, Sonja A1 - Kropp, Per ED - Allmendinger, Jutta T1 - Die Bedeutung sozialer Netzwerke beim Berufseinstieg T2 - Entstaatlichung und soziale Sicherheit. Verhandlungen des 31.Kongresses der Deutschen Gesellschaft für Soziologie in Leipzig 2002. Beiträge aus Arbeits-, Sektions- u. Ad-hoc-Gruppen Y1 - 2003 N1 - CD-ROM PB - Leske + Budrich CY - Opladen ER - TY - RPRT A1 - Haug, Sonja T1 - Sprachliche Integration von Migranten in Deutschland Y1 - 2008 UR - https://www.bamf.de/SharedDocs/Anlagen/DE/Forschung/WorkingPapers/wp14-sprachliche-integration.pdf?__blob=publicationFile&v=11 CY - Nürnberg ER - TY - RPRT A1 - Beer, Manuela A1 - Liebe, Ulf A1 - Haug, Sonja A1 - Kropp, Per T1 - Ego-zentrierte soziale Netzwerke beim Berufseinstieg BT - Eine Analyse der Homophilie, Homogenität und Netzwerkdichte ehemaliger Studierender der Sozialwissenschaften in Leipzig Universität Y1 - 2002 PB - Institut für Soziologie CY - Leipzig ER - TY - CHAP A1 - Haug, Sonja ED - Dorbritz, Jürgen ED - Otto, Johannes T1 - Zur Bedeutung gesetzlicher Rahmenbedingungen für die Familienstrukturen von Immigranten in Deutschland T2 - Familienpolitik und Familienstrukturen Y1 - 2002 SP - 163 EP - 175 PB - Bundesinstitut für Bevölkerungsforschung CY - Wiesbaden ER - TY - RPRT A1 - Haug, Sonja A1 - Zerger, Frithjof T1 - Integrationskurse BT - Erste Erfahrungen und Erkenntnisse einer Teilnehmerbefragung Y1 - 2006 UR - https://www.ssoar.info/ssoar/handle/document/35044 CY - Nürnberg ER - TY - CHAP A1 - Haug, Sonja ED - Metze, Regine ED - Mühler, Kurt ED - Opp, Karl-Dieter T1 - Vertrauen ist gut, Kontrolle ist besser? BT - Soziales Kapital und moralische Normen im Kommunitarismus T2 - Normen und Institutionen: Ursachen und Wirkungen Y1 - 2000 SP - 321 EP - 357 PB - Leipziger Universitätsverlag CY - Leipzig ER - TY - GEN A1 - Haug, Sonja T1 - Soziologie auch im Internet BT - Beispiel einer empirischen Untersuchung zur Musik im Internet T2 - Tag der offenen Tür der Universität Leipzig, 3.12.2001, Leipzig Y1 - 2001 ER - TY - RPRT A1 - Haug, Sonja T1 - Migration und Italien BT - Italienische Zuwanderer in Deutschland Y1 - 2004 ER - TY - CHAP A1 - Dünnweber, Jan A1 - Mihaylov, Valentin A1 - Glettler, René A1 - Maiborn, Volker A1 - Wolff, Holger T1 - Use of HPC-Techniques for Large-Scale Data Migration T2 - Workshop on High-Performance Computing Applied to Finance, 2011, Ischia, Italy N2 - Any re-design of a distributed legacy system requires a migration which involves numerous complex data replication and transformation steps. Migration procedures can become quite difficult and time-consuming, especially when the setup (i.e., the employed databases, encodings, formats etc.) of the legacy and the target system fundamentally differ, which is often the case with finance data, grown over decades. We report on experiences from a real-world project: the recent migration of a customer loyalty system from a COBOL-operated mainframe to a modern service-oriented architecture. In this context, we present our easy-to-adopt solution for running most replication steps in a high-performance manner: the QuickApply HPC-software which helps minimizing the replication time, and, thereby, the overall downtime of the migration. Business processes can be kept up and running most of the time, while pre-extracted data already pass a variety of platforms and representations toward the target system. We combine the advantages of traditional migration approaches: transformations, which require the interruption of business processes are performed with static data only, they can be made undone in case of a failure and terminate quickly, due to the use of parallel processing. KW - Business Process KW - Legacy System KW - Target System KW - Work Unit KW - Loyalty Program Y1 - 2011 SN - 978-3-642-21877-4 U6 - https://doi.org/10.1007/978-3-642-29737-3_45 PB - Springer CY - Berlin, Heidelberg ER - TY - CHAP A1 - Baumann, Timo A1 - Kennington, Casey A1 - Hough, Julian A1 - Schlangen, David ED - Jokinen, Kristiina ED - Wilcock, Graham T1 - Recognising Conversational Speech: What an Incremental ASR Should Do for a Dialogue System and How to Get There T2 - Dialogues with social robots: Enablements analyses and evaluation T2 - Lecture Notes in Electrical Engineering: Bd. 427 N2 - Automatic speech recognition (ASR) is not only becoming increasingly accurate, but also increasingly adapted for producing timely, incremental output. However, overall accuracy and timeliness alone are insufficient when it comes to interactive dialogue systems which require stability in the output and responsivity to the utterance as it is unfolding. Furthermore, for a dialogue system to deal with phenomena such as disfluencies, to achieve deep understanding of user utterances these should be preserved or marked up for use by downstream components, such as language understanding, rather than be filtered out. Similarly, word timing can be informative for analyzing deictic expressions in a situated environment and should be available for analysis. Here we investigate the overall accuracy and incremental performance of three widely used systems and discuss their suitability for the aforementioned perspectives. From the differing performance along these measures we provide a picture of the requirements for incremental ASR in dialogue systems and describe freely available tools for using and evaluating incremental ASR. KW - Incremental ASR KW - Conversational speech KW - System requirements KW - Evaluation Y1 - 2017 SN - 978-981-10-2584-6 U6 - https://doi.org/10.1007/978-981-10-2585-3_35 SP - 421 EP - 432 PB - Springer CY - Singapore ER - TY - CHAP A1 - Baumann, Timo A1 - Hussein, Hussein A1 - Meyer-Sickendiek, Burkhard T1 - Style Detection for Free Verse Poetry from Text and Speech T2 - Proceedings of the 27th International Conference on Computational Linguistics (COLING), 20-26.08.2018, Santa Fe, New Mexico, USA N2 - Modern and post-modern free verse poems feature a large and complex variety in their poetic prosodies that falls along a continuum from a more fluent to a more disfluent and choppy style. As the poets of modernism overcame rhyme and meter, they oriented themselves in these two opposing directions, creating a free verse spectrum that calls for new analyses of prosodic forms. We present a method, grounded in philological analysis and current research on cognitive (dis)fluency, for automatically analyzing this spectrum. We define and relate six classes of poetic styles (ranging from parlando to lettristic decomposition) by their gradual differentiation. Based on this discussion, we present a model for automatic prosodic classification of spoken free verse poetry that uses deep hierarchical attention networks to integrate the source text and audio and predict the assigned class. We evaluate our model on a large corpus of German author-read post-modern poetry and find that classes can reliably be differentiated, reaching a weighted f-measure of 0.73, when combining textual and phonetic evidence. In our further analyses, we validate the model’s decision-making process, the philologically hypothesized continuum of fluency and investigate the relative importance of various features. Y1 - 2018 UR - https://aclanthology.org/C18-1164.pdf SP - 1929 EP - 1940 ER - TY - CHAP A1 - Baumann, Timo A1 - Bangalore, Srinivas A1 - Hirschberg, Julia ED - Federico, Marcello ED - Stüker, Sebastian ED - Yvon, François T1 - Towards Simultaneous Interpreting: The Timing of Incremental Machine Translation and Speech Synthesis T2 - Proceedings of the 11th International Workshop on Spoken Language Translation. Papers. Lake Tahoe, December 4th and 5th, 2014 N2 - In simultaneous interpreting, human experts incrementally construct and extend partial hypotheses about the source speaker’s message, and start to verbalize a corresponding message in the target language, based on a partial translation – which may have to be corrected occasionally. They commence the target utterance in the hope that they will be able to finish understanding the source speaker’s message and determine its translation in time for the unfolding delivery. Of course, both incremental understanding and translation by humans can be garden-pathed, although experts are able to optimize their delivery so as to balance the goals of minimal latency, translation quality and high speech fluency with few corrections. We investigate the temporal properties of both translation input and output to evaluate the tradeoff between low latency and translation quality. In addition, we estimate the improvements that can be gained with a tempo-elastic speech synthesizer. KW - incremental processing KW - speech synthesis KW - timing KW - simultaneous interpreting Y1 - 2014 UR - https://aclanthology.org/2014.iwslt-papers.2.pdf SP - 163 EP - 168 ER - TY - JOUR A1 - Meyer-Sickendiek, Burkhard A1 - Hussein, Hussein A1 - Baumann, Timo T1 - Towards the Creation of a Poetry Translation Mapping System JF - Archives of Data Science, Series A N2 - The translation of poetry is a complex, multifaceted challenge: the translated text should communicate the same meaning, similar metaphoric expressions, and also match the style and prosody of the original poem. Research on machine poetry translation is existing since 2010, but for four reasons it is still rather insufficient: 1. The few approaches existing completely lack any knowledge about current developments in both lyric theory and translation theory. 2. They are based on very small datasets. 3. They mostly ignored the neural learning approach that superseded the long-standing dominance of phrase-based approaches within machine translation. 4. They have no concept concerning the pragmatic function of their research and the resulting tools. Our paper describes how to improve the existing research and technology for poetry translations in exactly these four points. With regards to 1) we will describe the “Poetics of Translation”. With regards to 2) we will introduce the Worlds largest corpus for poetry translations from lyrikline. With regards to 3) we will describe first steps towards a neural machine translation of poetry. With regards to 4) we will describe first steps towards the development of a poetry translation mapping system. Y1 - 2018 U6 - https://doi.org/10.5445/KSP/1000087327/21 SN - 2363-9881 VL - 5 IS - 1 SP - 1 EP - 15 PB - Towards the Creation of a Poetry Translation Mapping System ER - TY - CHAP A1 - Baumann, Timo T1 - Learning to Determine Who is the Better Speaker T2 - Proceedings of the 9th International Conference on Speech Prosody, 13-16 June 2018, Poznań, Poland N2 - Speech can be more or less likable in various ways and comparing speakers by likability has important applications such as speaker selection or matching. Determining the likability of a speaker is a difficult task which can be simplified by breaking it down into pairwise preference decisions. Using a corpus of 5440 pairwise preference ratings collected previously through crowd-sourcing, we train classifiers to determine which of two speakers is “better”. We find that modeling the speech feature sequences using LSTMs outperforms conventional methods that pre-aggregate feature averages by a large margin, indicating that the prosodic structure should be taken into account when determining speech quality. Our classifier reaches an accuracy of 97 % for coarse-grained decisions, where differences between speech quality in both stimuli is relatively large. Y1 - 2018 U6 - https://doi.org/10.21437/SpeechProsody.2018-165 SP - 819 EP - 822 PB - ISCA ER - TY - JOUR A1 - Schliermann, Rainer A1 - Reinhardt, Christian A1 - Beck, Florian A1 - Herz, Franziska T1 - Sportpsychologie im Fußball – eine Bestandsaufnahme JF - Leistungssport : Zeitschrift für die Fortbildung von Trainern, Übungsleitern und Sportlehrern N2 - Zum Einsatz sportpsychologischen Trainings bzw. dem Kenntnisstand über diesbezügliche Maßnahmen im Fußball liegen noch keine Studien vor. Ziel der vorliegenden Studie war es daher, den Kenntnisstand und die tatsächliche Anwendung sportpsychologischer Maßnahmen bei Fußballtrainern verschiedener Lizenzstufen zu untersuchen. Als zentrales Ergebnis lässt sich konstatieren, dass dem sportpsychologischen Training von fast allen Trainern eine große Bedeutung zugesprochen wird, der Kenntnisstand jedochäußerst lückenhaft ist und der Einsatz entsprechender Intervention kaum stattfindet. KW - Betreuung KW - Deutschland KW - Fußball KW - Sportpsychologie Y1 - 2010 UR - https://www.iat.uni-leipzig.de/datenbanken/iks/open_archive/ls/lsp10_05_23_24.pdf? SN - 0341-7387 VL - 40 IS - 5 SP - 23 EP - 24 PB - Philippka-Verlag CY - Münster ER - TY - BOOK A1 - Schliermann, Rainer A1 - Hülß, Horst T1 - Mentaltraining im Fußball : Ein Handbuch für Trainer, Übungsleiter und Sportlehrer KW - Fußball KW - Mentales Training KW - Psychotraining Y1 - 2016 SN - 978-3-88020-646-5 SN - 1866-3346 PB - Feldhaus, Ed. Czwalina CY - Hamburg ET - 2. Auflage ER - TY - CHAP A1 - Zilch, Konrad A1 - Finckh, Wolfgang ED - Fuchs, Werner T1 - Erweiterung der Verbundmodelle auf eingeschlitzte Bewehrung T2 - Befestigungstechnik, Bewehrungstechnik und ... Teil 2 : Rolf Eligehausen zum 70. Geburtstag Y1 - 2012 SN - 978-3-8982-1208-3 SP - 577 EP - 590 PB - ibidem-Verl. CY - Stuttgart ER - TY - JOUR A1 - Schliermann, Rainer A1 - Froböse, Ingo T1 - Psychologische Aspekte des Behindertenleistungssports am Beispiel des Rollstuhlbasketballs JF - Sportinspiration : Der Report 2012/2013 zum Sport für Menschen mit Behinderungen Y1 - 2012 PB - Panta Rhei GmbH CY - Bonn ER - TY - CHAP A1 - Baumann, Timo A1 - Schlangen, David ED - Fingscheidt, T. T1 - The INPROTK 2012 release BT - A toolkit for incremental spoken dialogue processing T2 - Sprachkommunikation 2012 : Beiträge zur 10. ITG-Fachtagung vom 26. bis 28. September 2012 in Braunschweig N2 - We describe the 2012 release of INPROTK1, our “Incremental Processing Toolkit“ which combines a powerful and extensible architecture for incremental processing with components for incremental speech recognition and, new to this release, incremental speech synthesis. These components work domainindependently; we also provide example implementations of higher-level components such as natural language understanding and dialogue management that are somewhat more tied to a particular domain. The toolkit is accompanied by evaluation tools for analysing timing behaviour, and we highlight some timing results on conversational speech input in this paper. We offer our toolkit to foster research in this new and exciting area, which promises to help increase the naturalness of behaviours that can be modelled in such systems. KW - Speech synthesis Y1 - 2012 UR - https://ieeexplore.ieee.org/document/6309600 SN - 978-3-8007-3455-9 SP - 147 EP - 150 PB - VDE-Verl CY - Berlin ; Offenbach ER - TY - CHAP A1 - Schliermann, Rainer A1 - Stiller, Reinhold A1 - Schliermann, Thomas A1 - Huth, Andrea ED - Frei, Peter ED - Körner, Swen T1 - "Peking 2008": Ein pädagogisches Bildungsprojekt für Erwachsene mit geistiger Behinderung T2 - Ungewissheit: Sportpädagogische Felder im Wandel ; Jahrestagung der dvs-Sektion Sportpädagogik vom 11.-13. Juni 2009 in Hildesheim Y1 - 2010 SN - 978-3-88020-550-5 SP - 287 EP - 293 PB - Feldhaus, Edition Czwalina CY - Hamburg ER - TY - CHAP A1 - Schliermann, Rainer ED - Wegner, Manfred ED - Scheid, Volker ED - Knoll, Michaela Beate T1 - Die Deaflympische Sportbewegung T2 - Handbuch Behinderung und Sport Y1 - 2015 SN - 3778048805 SN - 9783778048801 SP - 279 EP - 290 PB - Hofmann CY - Schorndorf ER - TY - CHAP A1 - Heese, Carl A1 - Thaler, Tilman ED - Keller, Katrin T1 - Das Krankenhaus als engagierter Bürger: Sponsoring im Rahmen der Corporate Citizenship T2 - CSR im Gesundheitswesen: Dynamik im Spannungsfeld von individuellem und organisationalem Anspruch und deren Auswirkungen auf die Unternehmensstrategie N2 - Krankenhäuser sind nicht nur Spendennehmer, sie sind auch selbst sozial engagierte Akteure. Der Beitrag liefert Beispiele für dieses Engagement und erläutert sie als Aufbau von Sozialkapital, dem mit der Perspektive der Corporate Citizenship ein geeigneter Rahmen gegeben werden kann. Der Citizenship-Ansatz wird für Kliniken erläutert. Den Abschluss bilden Überlegungen zur Akzeptanz im ärztlichen Dienst und in der Pflege. KW - Krankenhausfinanzierung Y1 - 2018 SN - 978-3-662-55937-6 U6 - https://doi.org/10.1007/978-3-662-55937-6_10 SP - 179 EP - 190 PB - Springer CY - Berlin ET - 1. Aufl. ER - TY - CHAP A1 - Heese, Carl ED - Suzykiewicz, Janusz ED - Büssing, Arndt T1 - Der Samariter - eine schwierige Identifikationsfigur für Pflegeberufe T2 - Dem Gutes tun, der leidet N2 - Der Samariter ist eine Leitvorstellung für das Helferhandeln von hoher suggestiver Kraft und wird auch für die in der Pflege Tätigen in Anspruch genommen. Nach einer Phase der reflexiven Problematisierung der Hilfemotivation erfährt der Samariter im Zeichen der Positiven Psychologie heute eine erneute Bekräftigung. Diese Affirmation bezieht sich aber vor allem auf die Motivation zur Hilfe. Problematisch bleibt der für das berufliche Helferhandeln zentrale Aspekt der fachlichen Kompetenz, den das Leitbild nicht transportiert. KW - Pflege Y1 - 2015 SN - ‎978-3-662-44279-1 U6 - https://doi.org/10.1007/978-3-662-44279-1_14 SP - 127 EP - 131 PB - Springer CY - Berlin ET - 1. Aufl. ER - TY - JOUR A1 - Heese, Carl A1 - Thaler, Philipp T1 - Traditionelles Taekwondo - auch für Menschen mit Behinderung: Interviewstudie zu einem inklusiven Modellprojekt JF - Theorie und Praxis der Sozialen Arbeit KW - Behindertenhilfe Y1 - 2017 UR - https://content-select.com/de/portal/media/view/59537092-aaf8-4451-9084-76bbb0dd2d03 SN - 0342-2275 VL - 68 IS - 3 SP - 185 EP - 194 PB - Beltz Juventa CY - Weinheim ER - TY - JOUR A1 - Heese, Carl T1 - Der Blick auf das Soziale Umfeld der Rehabilitation JF - Familien-Prisma. Zeitschrift des Zentrums für Familienfragen KW - Rehabilitation Y1 - 2014 UR - https://www.ku.de/fileadmin/190803/Familien-Prisma_2014.pdf VL - 6 SP - 28 EP - 29 PB - Katholische Universität Eichstätt-Ingolstadt CY - Eichstätt ER - TY - CHAP A1 - Heese, Carl ED - Bernhard, Sill T1 - Aktivierung im Alter. Aktuelle Entwicklungslinien eines geragogischen Programms T2 - Alter(n) KW - Geragogik Y1 - 2016 SN - 978-3-8306-7804-5 SP - 215 EP - 238 PB - EOS Verlag CY - St. Ottilien ET - 1. Aufl. ER - TY - JOUR A1 - Heese, Carl A1 - Miklitza, Norbert T1 - Entwicklung und Pflege des Leitbilds JF - Führen und Wirtschaften im Krankenhaus KW - Krankenhausmanagement Y1 - 2017 VL - 11 SP - 1048 EP - 1050 PB - Bibliomed, Med. Verl.-Ges. CY - Melsungen ER - TY - JOUR A1 - Heese, Carl A1 - Stein, Margit ED - Stein, Margit ED - Heese, Carl T1 - Auf welche Schlüsselqualifikationen kommt es an? Ausbilder und Auszubildende bewerten JF - Der Modellversuch "Leistungsstarke Auszubildende nachhaltig fördern". Wissenschaftliche Diskussionspapiere KW - Berufliche Bildung Y1 - 2003 IS - 67 SP - 93 EP - 104 PB - BIBB CY - Bonn ER - TY - JOUR A1 - Heese, Carl ED - Heese, Carl ED - Stein, Margits T1 - Modellversuch "Leistungsstarke Auszubildende nachhaltig fördern" - Ziele und Konzeption JF - Der Modellversuch "Leistungsstarke Auszubildende nachhaltig fördern" KW - Berufliche Bildung Y1 - 2003 IS - 67 SP - 19 EP - 30 PB - BIBB CY - Bonn ER - TY - GEN A1 - Heese, Carl A1 - Schmidt, Hans-Ludwig T1 - Die Rolle der sozialen unterstützung in der neurologischen Frührehabiltation BT - Eine Feldstudie T2 - Rehabilitationswissenschaftliches Kolloquium, 16, 2007, Hannover KW - Rehabilitation Y1 - 2004 SP - 423 EP - 424 PB - WDV CY - Bad Homburg ER - TY - JOUR A1 - Stein, Margit A1 - Heese, Carl T1 - Forderungen an die Berufsausbildung nach PISA JF - Wirtschaft und Berufserziehung. Zeitschrift für Berufsbildung KW - Berufliche Bildung Y1 - 2003 VL - 55. Jg. IS - H. 3 SP - 12 EP - 16 PB - Steiner CY - Stuttgart ER - TY - JOUR A1 - Noster, Ulf A1 - Scholtes, Berthold T1 - Bauschingerefekt und mechanische Zwillingsbildung der Magnesiumlegierung AZ31 JF - Härterei-technische Mitteilungen : HTM ; Zeitschrift für Werkstoffe, Wärmebehandlung, Fertigung Y1 - 2003 UR - https://www.researchgate.net/publication/285130307_Bauschingerefekt_und_mechanische_Zwillingsbildung_der_Magnesiumlegierung_AZ31 VL - 58 SP - 322 EP - 327 PB - Hanser ER - TY - CHAP A1 - Billinger, Wolfgang A1 - Noster, Ulf ED - Degischer, Hans Peter T1 - Bauteilfertigung T2 - Leichtbau Y1 - 2009 SN - 9783527628247 U6 - https://doi.org/10.1002/9783527628247.ch4 SP - 247 EP - 278 PB - Wiley-VCH CY - Weinheim ER - TY - CHAP A1 - Noster, Ulf A1 - Altenberger, Igor A1 - Ritchie, Robert O. A1 - Scholtes, Berthold ED - Wagner, Lothar T1 - Isothermal Fatigue Behavior and Residual Stress States of Mechanically Surface Treated Ti-6Al-4V: Laser Shock Peening vs. Deep Rolling T2 - Shot peening N2 - In this paper, the high-temperature fatigue behavior and residual stress states of a Ti-6Al-4V alloy are investigated after mechanical surface treatment. In particular, the two surface treatments investigated, laser shock peening and deep rolling, were observed to result in significantly different residual stress states. The consequent isothermal fatigue behavior at elevated temperatures, characterized using cyclic deformation curves, are discussed in terms of the stability of the near-surface work hardening and compressive residual stresses. Despite pronounced relaxation of the residual stresses, both laser shock peening and deep rolling led to a significant improvement in the cyclic deformation behavior and, hence, increased fatigue lifetimes at elevated temperatures as compared to untreated materials states. Y1 - 2003 SN - 9783527606580 U6 - https://doi.org/10.1002/3527606580.ch57 SP - 447 EP - 453 PB - Wiley-VCH CY - Weinheim; [Cambridge] ER - TY - JOUR A1 - Nalla, Ravi K. A1 - Altenberger, Igor A1 - Noster, Ulf A1 - Liu, G.Y. A1 - Scholtes, Berthold A1 - Ritchie, Robert O. T1 - On the influence of mechanical surface treatments—deep rolling and laser shock peening—on the fatigue behavior of Ti–6Al–4V at ambient and elevated temperatures JF - Materials Science and Engineering: A N2 - It is well known that mechanical surface treatments, such as deep rolling, shot peening and laser shock peening, can significantly improve the fatigue behavior of highly-stressed metallic components. Deep rolling (DR) is particularly attractive since it is possible to generate, near the surface, deep compressive residual stresses and work hardened layers while retaining a relatively smooth surface finish. In the present investigation, the effect of DR on the low-cycle fatigue (LCF) and high-cycle fatigue (HCF) behavior of a Ti–6Al–4V alloy is examined, with particular emphasis on the thermal and mechanical stability of the residual stress states and the near-surface microstructures. Preliminary results on laser shock peened Ti–6Al–4V are also presented for comparison. Particular emphasis is devoted to the question of whether such surface treatments are effective for improving the fatigue properties at elevated temperatures up to ∼450 °C, i.e. at a homologous temperature of ∼0.4T/Tm (where Tm is the melting temperature). Based on cyclic deformation and stress/life (S/N) fatigue behavior, together with the X-ray diffraction and in situ transmission electron microscopy (TEM) observations of the microstructure, it was found that deep rolling can be quite effective in retarding the initiation and initial propagation of fatigue cracks in Ti–6Al–4V at such higher temperatures, despite the almost complete relaxation of the near-surface residual stresses. In the absence of such stresses, it is shown that the near-surface microstructures, which in Ti–6Al–4V consist of a layer of work hardened nanoscale grains, play a critical role in the enhancement of fatigue life by mechanical surface treatment. KW - Deep rolling KW - Elevated temperature behavior KW - Fatigue KW - Laser shock peening KW - Residual stress KW - Surface treatment KW - Ti–6Al–4V Y1 - 2003 U6 - https://doi.org/10.1016/S0921-5093(03)00069-8 SN - 1873-4936 VL - 355 IS - 1-2 SP - 216 EP - 230 PB - Elsevier ER - TY - CHAP A1 - Ucsnik, Stephan A. A1 - Gradinger, Rudolf A1 - Noster, Ulf A1 - Pahr, Dieter H. T1 - Finite element based optimization of a novel metal-composite-joint T2 - 1st EUCOMAS, European Conference on Materials and Structures in Aerospace, Conference Berlin, May 26 - 27, 2008  N2 - Aerospace and automotive industries employ three main techniques to set up joints between metal and fibre reinforced plastics parts (FRP); adhesive bonding, mechanical fastening with rives/bolts and a hybrid combination. A new joint technique has been developed to combine the two advantageous mechanisms form-closure and adhesion in a fibre-friendly way. Prior is established through metal structures (pins) which are perpendicularly welded onto metal surfaces with an arc-welding-process. They intrude into the FRP during lay-up and therefore set up a first connection. The composite-matrix is responsible for latter adhesive bonding and final form closure. Finite-element-analyses of cylindrically shaped joints are carried out to get detailed knowledge of the influence of parameters like pin-number, pin-position, pin-height, pin-form sleeve-geometry, and stiffness behaviour. Long calculation times of 3D-models lead to the introduction of a corresponding 2D-axisymmetric-model which is used to run parameter-studies within a reasonable time. For this novel technique the combination of fibre-friendly form closure and adhesive bonding of interface plays a major role. A well selected amount of vertical reinforcements, their placement and geometrical dimensions will lead to a stiffer joint. Goal is to minimize fibre-deletion and overlap length to improve load-transfer and joint-strength, to reduce weight in high-strength-applications as well as the avoidance of safety rivets. Y1 - 2008 SN - 0083-5560 SP - 371 EP - 379 PB - VDI-Verlag CY - Düsseldorf ER - TY - CHAP A1 - Altenberger, Igor A1 - Nalla, R. K. A1 - Noster, Ulf A1 - Scholtes, Berthold A1 - Ritchie, Robert O. T1 - On the fatigue behavior and associated effect of residual stresses in deep rolled and laser shock peened Ti-6Al-4V at ambient and elevated temperatures T2 - 2003 TMS annual meeting N2 - Mechanical surface treatments, such as deep rolling, shot peening and laser shock peening, can significantly improve the fatigue behavior of highly stressed metallic components. Deep rolling is an especially attractive technique since it is possible to generate deep, near-surface compressive residual stresses and work hardening while retaining a relatively smooth surface finish. Indeed, this technique is best known for increasing the fatigue strength and lifetime of steel components such as crankshafts. Although most work on deep rolling has been on steels, recently it has also been applied with reasonable success to titanium alloys. Accordingly, in this investigation, we examine the effect of deep rolling on the high-cycle fatigue behavior of Ti-6Al-4V, with particular emphasis on the thermal and mechanical stability of the residual stress states and near-surface microstructures. Preliminary results on laser shock peened Ti-6Al-4V are also presented for comparison. In addition, we examine whether these surface treatments are effective in retaining fatigue strength at the higher temperatures of 300 to 450C. Based on the cyclic deformation and stress/life behavior, together with the X-ray and microstructural observations, it is found that deep rolling can be quite effective in retarding the initiation and initial propagation of fatigue cracks in Ti-6Al-4V at such higher temperatures, despite the almost complete relaxation of the residual stresses at the surface. This clearly implies that, in addition to residual stresses, near-surface microstructures, which in Ti-6Al-4V consist of ultrafine near-surface nanostructures, play a critical role in the enhancement of fatigue lifetimes by mechanical surface treatments. Y1 - 2003 UR - https://www.researchgate.net/publication/273462702_On_the_fatigue_behavior_and_associated_effect_of_residual_stresses_in_deep_rolled_and_laser_shock_peened_Ti-6Al-4V_at_ambient_and_elevated_temperatures SP - 359 PB - The Minerals, Metals & Materials Society (TMS) ER - TY - CHAP A1 - Altenberger, Igor A1 - Noster, Ulf A1 - Scholtes, Berthold A1 - Ritchie, Robert O. ED - Wagner, Lothar T1 - High Temperature Fatigue of Mechanically Surface Treated Materials T2 - Shot peening N2 - Introduction The most well known effect of mechanical surface treatments on metallic materials is the improvement in fatigue properties. It is therefore not surprising that most of the archival literature on mechanical surface treatments, such as shot peening, deep rolling and laser shock peening, deals with the effect of near-surface properties on fatigue behavior. Most of these studies, however, are confined to room temperature fatigue behavior; in comparision, the effect of mechanical surface treatment on fatigue behavior at high temperatures has been rarely investigated [1-5]. The reason for this disparity can be found in the popular belief that fatigue strength improvement by mechanical surface treatments is mainly due to the presence of compressive residual stresses, and since such stresses should anneal out at elevated temperatures, mechanical surface treatments for high temperature applications would appear questionable. However, this view may be over simplistic as there is always a possibility that the residual stresses may be at least partially stable at elevated temperatures [6]; in addition, other factors may be involved, such as the nature of the near-surface microstructure. Accordingly, it is the objective of this study to examine the role of mechanical surface treatments on the high temperature fatigue behavior of several metallic engineering materials. Moreover, it is the aim of this work to clarify what are the critical temperature "thresholds' at which near-surface microstructures and residual stresses become unstable and whether this can explain the observed fatigue behavior. Y1 - 2003 SN - 9783527606580 U6 - https://doi.org/10.1002/3527606580.ch62 SP - 483 EP - 489 PB - Wiley-VCH CY - Weinheim; [Cambridge] ER - TY - BOOK A1 - Altenberger, Igor A1 - Wagner, Lothar A1 - Mhaede, Mansour A1 - Juijerm, Patiphan A1 - Noster, Ulf T1 - Effect of Deep Rolling on the Cyclic Performance of Magnesium and Aluminium Alloys in the Temperature Range 20-250°C T3 - The 10th International Conference on Shot Peening (ICSP), Conference Proceedings, Tokyo Japan, 15th to 18th September, 2008 N2 - Mechanical surface treatments such as deep rolling or laser-shock peening can markedly affect the cyclic performance of light-weight alloys, especially if significant thick work hardened surface regions are induced. At room temperature, the cyclic deformation behaviour is strongly influenced by the nature of the induced near-surface microstructures provided that they remain stable during fatigue loading. At elevated temperatures, the stability of near-surface work hardening and local microstructures plays an even more important role since the process-induced residual compressive stresses are likely to anneal out partially or completely. This overview illustrates to what extent deep rolling can effect the cyclic performance of various wrought light alloys being fatigue loaded in stress control at ambient and elevated temperatures. KW - Deep Rolling KW - Aluminum Alloys KW - Magnesium Alloys KW - High Temperature Fatigue Y1 - 2008 UR - https://www.researchgate.net/publication/273319235_Effect_of_Deep_Rolling_on_the_Cyclic_Performance_of_Magnesium_and_Aluminium_Alloys_in_the_Temperature_Range_20-250C ER - TY - JOUR A1 - Voyer, Joel A1 - Peterlechner, Christian A1 - Noster, Ulf T1 - Flame sprayed Al-12Si coatings for the improvement of the adhesion of composite casting profiles JF - Journal of Thermal Spray Technology N2 - In this study, flame sprayed Al-12Si coatings were produced on the surface of inlays (aluminum profiles) of composite castings parts. The aim was to enhance the strength between the joining partners inlay and cast. Due to the high surface roughness and the presence of pores in the coatings, combined with the formation of an intermetallic phase at the interface, the adhesion of flame sprayed inlays could be enhanced by a factor of 2 compared to blank inlays and by a factor of 1.3 when compared to sand-blasted inlays. However, results also show that gaps are present, mostly at the interface between the inlays and the flame sprayed coatings, and these gaps have a negative effect on the joining strength of the composite casting parts. Therefore, optimizing the adhesion of the coating on the Al profiles via an improvement in both the sand-blasting and the flame spraying parameters would be beneficial for further enhancement of the adhesion of composite casting parts. KW - aluminum composites KW - fatigue and fracture KW - flame spray KW - influence of properties Y1 - 2008 U6 - https://doi.org/https://doi.org/10.1007/s11666-008-9235-8 SN - 1544-1016 SN - 1059-9630 VL - 17 IS - 5-6 SP - 824 EP - 830 PB - Springer CY - Boston, Mass. ER - TY - CHAP A1 - Steffens, Oliver A1 - Szabó, Peter A1 - Lenz, Michael A1 - Farkas, Gábor T1 - Thermal transient characterization methodology for single-chip and stacked structures BT - Best Paper Award T2 - Semiconductor Thermal Measurement and Management Symposium, 2005 N2 - High-power semiconductor packages typically exhibit a 3D heat flow, resulting in large lateral changes in chip and case surface temperature. For single-chip devices we propose to use an unambiguous definition for the junction-to-case thermal resistance as a key parameter, based on a transient measurement technique with much higher repeatability, also for very low thermal resistances compared to a two-point thermal resistance measurement. The technique is illustrated on thermal transient measurements of power MOSFETs. A comparison between different thermal coupling to the ambient is used to demonstrate the method's capability to reveal even subtle internal details of the package. The concept is extended to multichip and stacked-chip structures, where transfer impedances have to be introduced. Here, the dynamic properties of the package are important and complex impedance mapping is the proper way to characterize the package. KW - Thermal resistance KW - Temperature KW - Electrical resistance measurement KW - Impedance KW - Assembly KW - Semiconductor device packaging KW - Surface resistance KW - Measurement techniques KW - MOSFETs Y1 - 2005 U6 - https://doi.org/10.1109/STHERM.2005.1412198 SN - 1065-2221 SP - 313 EP - 321 PB - IEEE ER - TY - CHAP A1 - Steffens, Oliver A1 - Suhrke, Michael A1 - Rössler, Ulrich ED - Kramer, Bernhard T1 - Ground state and collective excitations of quantum dots: Correlation effects and Hund’s rule in magnetic field T2 - Advances in Solid State Physics N2 - We review ground-state properties and collective excitations of semiconductor quantum dots in a magnetic field obtained from current-spin density-functional theory. Due to exchange-correlation, a generalized Hund’s rule in magnetic field can be established which leads to spin alignment in partially occupied energy shells at the Fermi energy. This results, in distinct spin structures in single-electron addition spectra. Current-dependent exchange-correlation modifies the magnetic-field dependence of the ground state configuration and leads to deviations from plain spin-density calculations. Moreover it gives rise to spontaneous current textures at zero magnetic field. Collective excitation spectra, explicitly calculated for inelastic light scattering, exhibit novel features in their magnetic field dependence due to a finite ground-state spin density. KW - Spin Density KW - Fermi Energy KW - Collective Excitation KW - Addition Spectrum KW - Inelastic Light Scattering Y1 - 1999 SN - 978-3-540-44553-1 U6 - https://doi.org/10.1007/BFb0107469 VL - 39 SP - 111 EP - 120 PB - Friedr. Vieweg & Sohn CY - Braunschweig ER - TY - JOUR A1 - Szabó, Peter A1 - Steffens, Oliver A1 - Lenz, Michael A1 - Farkas, Gábor T1 - Transient junction-to-case thermal resistance measurement methodology of high accuracy and high repeatability JF - IEEE Transactions on Components and Packaging Technologies N2 - High-power packages show a characteristic three-dimensional heat flow resulting in large lateral changes in chip and case surface temperature. This paper proposes an unambiguous definition for the R/sub thJC/ junction-to-case thermal resistance as a key parameter of such packages based on a transient measurement technique ensuring high repeatability even at very low R/sub th/ values. The technique is illustrated on thermal transient measurements of high-power MOSFET devices. It is also presented how the same measurement results can be used for die attach quality analysis. Finally, a comparative method is shown for measuring the differences of R/sub th/ values among samples with many times higher resolution compared with a direct R/sub thJC/ measurement. KW - Thermal resistance KW - Electrical resistance measurement KW - Temperature KW - Packaging KW - Cold plates KW - MOSFET circuits KW - Semiconductor device measurement KW - Surface resistance KW - Microassembly KW - Thermal conductivity Y1 - 2005 U6 - https://doi.org/10.1109/TCAPT.2005.859768 SN - 1521-3331 VL - 28 IS - 4 SP - 630 EP - 636 ER - TY - JOUR A1 - Steffens, Oliver A1 - Schlösser, Tilman A1 - Rotter, Peter A1 - Ensslin, Klaus A1 - Suhrke, Michael A1 - Kotthaus, Jörg A1 - Rössler, Ulrich A1 - Holland, M. T1 - From the two-dimensional electron gas to antidot superlattices: Magnetoresistance effects in the transition regime JF - Journal of Physics: Condensed Matter N2 - Magnetoresistance measurements and theoretical calculations for two-dimensional electron systems under a perpendicular magnetic field are presented which illuminate transport effects due to a periodic electrostatic potential modulation. We focus on features arising from the resolution of the magnetic miniband structure which are beyond the perturbative regime governed by the dispersion of Landau bands. Our non-perturbative quantum-mechanical calculations reveal that the dispersion of individual minibands is responsible for the complicated behaviour of the magnetoresistance in the regime of intermediate modulation strength. In particular, the interplay between miniband and scattering contributions to the conductivity leads to an almost structureless magnetoresistance in this regime followed by the formation of antidot peaks due to the miniband conductivity. Y1 - 1998 U6 - https://doi.org/10.1088/0953-8984/10/17/016 SN - 0953-8984 VL - 10 IS - 17 SP - 3859 EP - 3872 ER - TY - JOUR A1 - Wensauer, Andreas A1 - Steffens, Oliver A1 - Suhrke, Michael A1 - Rössler, Ulrich T1 - Laterally coupled few-electron quantum dots JF - Physical Review B N2 - We present ground-state calculations for laterally coupled quantum dots containing 2, 4, and 8 electrons. As our emphasis is on spin effects our results are obtained by applying spin-density functional theory (SDFT). By varying the distance between the centers of the coupled quantum dots, the transition from weak to strong coupling situation is realized. For the 2-electron system we also apply the Heitler-London approximation and analytical concepts to check the reliability of SDFT calculations in this case. In addition we discuss the features of the Coulomb staircase of laterally coupled quantum dots in the weak and strong coupling regimes in comparison to that of a circular parabolic quantum dot. Y1 - 2000 U6 - https://doi.org/10.1103/PhysRevB.62.2605 VL - 62 IS - 4 SP - 2605 ER - TY - CHAP A1 - Steffens, Oliver A1 - Suhrke, Michael A1 - Rössler, Ulrich ED - Gershoni, David T1 - Correlation in few-electron quantum dots: Spin effects and spontaneous currents T2 - 24rd International Conference on the Physics of Semiconductors (ICPS 24), Jerusalem, Israel, August 2-7, 1998 Y1 - 1999 SN - 978-981-02-3613-7 PB - World Scientific CY - Singapore ER - TY - JOUR A1 - Steffens, Oliver A1 - Suhrke, Michael A1 - Rössler, Ulrich T1 - Shell structure and exchange-related spin effects for quantum dots in a magnetic field JF - Physica B N2 - Ground-state calculations based on current spin density-functional theory for circular parabolic quantum dots are presented which reveal interesting spin effects in dependence on an external magnetic field: Hund's first rule (well-known from atomic physics for zero magnetic field) is related to the level occupancy near the Fermi energy and determines the spin configuration of the ground state in finite magnetic field. Consequently, the addition spectrum of the quantum dot exhibits a specific non-monotonous dependence on magnetic field, which is visible in recent quantum transport experiments. KW - Quantum dot KW - Current spin density-functional theory KW - Exchange correlation Y1 - 1998 U6 - https://doi.org/10.1016/S0921-4526(98)00557-2 VL - 256-258 SP - 147 EP - 151 ER - TY - JOUR A1 - Steffens, Oliver A1 - Rössler, Ulrich A1 - Suhrke, Michael T1 - Generalized Hund's rule in the addition spectrum of a quantum dot JF - EPL (Europhysics Letters) N2 - We report on ground-state calculations based on current-spin density-functional theory for circular parabolic quantum dots. Hund's first rule, well-known from atomic physics, applies not only at zero magnetic field; analogous rules, related to the level occupancy near the Fermi energy, determine the spin configuration of the ground state in finite magnetic field. Consequently, the addition spectrum of the quantum dot exhibits a specific non-monotonous dependence on magnetic field. We discuss our results with focus on recent experiments which may already contain indications of this new feature. Y1 - 1998 U6 - https://doi.org/10.1209/epl/i1998-00276-4 VL - 42 IS - 5 SP - 529 EP - 534 ER - TY - JOUR A1 - Steffens, Oliver A1 - Suhrke, Michael T1 - Novel spin features in Raman spectra of few-electron quantum dots JF - Physical Review Letters N2 - We employ a self-consistent, dynamic spin-density functional concept beyond the dipole approximation in order to calculate the collective modes of few-electron quantum dots with partial spin polarization. Because of Hund's rule in a magnetic field the mode energies exhibit characteristic discontinuities in their magnetic-field dependence, which is a manifestation of ground-state transitions between different spin configurations. A finite ground-state spin density couples collective charge- and spin-density excitations. We predict their observability in state-of-the-art Raman experiments. Y1 - 1999 U6 - https://doi.org/10.1103/PhysRevLett.82.3891 VL - 82 IS - 19 SP - 3891 EP - 3894 PB - American Physical Society ER - TY - JOUR A1 - Steffens, Oliver A1 - Suhrke, Michael A1 - Rössler, Ulrich T1 - Spontaneously-broken time-reversal symmetry in quantum dots JF - EPL (Europhysics Letters) N2 - We present current-spin density-functional calculations for circular parabolic quantum dots in zero magnetic field. We find the possibility for broken time-reversal symmetry via exchange correlation with spontaneously induced orbital currents. For certain electron numbers, this results in new current textures which give rise to a finite magnetization even for ground states with vanishing total angular momentum. Y1 - 1998 U6 - https://doi.org/10.1209/EPL/I1998-00460-0 SN - 1286-4854 VL - 44 SP - 222 EP - 228 ER - TY - RPRT A1 - Steffens, Oliver A1 - Rössler, Ulrich A1 - Suhrke, Michael T1 - Comment on "Shell Filling and Spin Effects in a Few Electron Quantum Dot" T2 - Physical Review Letters N2 - We briefly report on calculated addition spectra for electrons in a circular quantum dot with perpendicular magnetic field. We compare our current density functional theory calculations with recent experiments by Tarucha et al. [PRL 77, 3613 (1996)]. We find a very good qualitative agreement of the structures and find an additional effect caused by Hund's first rule in magnetic field, which gives rise to new substructures not discussed in the paper by Tarucha. Y1 - 1996 UR - http://arxiv.org/abs/cond-mat/9711077 VL - 77 SP - 3613 ER - TY - JOUR A1 - Steffens, Oliver A1 - Suhrke, Michael A1 - Rotter, Peter A1 - Rössler, Ulrich T1 - From Landau levels to universal fluctuations: Level statistics for lateral superlattices JF - Physical Review B N2 - We study the energy-level statistics for electrons in a lateral two-dimensional superlattice in dependence on the strength of the modulation potential at a given perpendicular magnetic field. The interminiband statistics at some selected point in the magnetic Brillouin zone shows a transition from degenerate Landau levels to universal spectral correlations while the corresponding classical dynamics displays a crossover from regular cyclotron orbits to chaotic motion. In terms of the nearest-neighbor spacing distribution, we observe the occurrence of level repulsion for all nonzero modulation amplitudes, which indicates a discontinuous transition to universal fluctuations for the smallest level spacings when the rotational invariance of the system is broken by a finite superlattice potential. In order to test the universality of the transition on larger scales, we propose a random matrix model with one transition parameter for comparison. Confirmed by two different types of potential shapes, we detect an explicit influence of the potential shape on the level spacing distributions, which hence cannot be described by the one-parameter model. Using the spectral rigidity, however, universal long-range fluctuations in the regime of negligible Landau-level mixing are found, in agreement with our random matrix model. Y1 - 1997 U6 - https://doi.org/10.1103/PhysRevB.55.4486 VL - 55 IS - 7 SP - 4486 EP - 4493 ER - TY - JOUR A1 - Steffens, Oliver A1 - Wensauer, Andreas A1 - Suhrke, Michael T1 - Collective excitations in quantum dots: Calculated Raman spectra JF - physica status solidi (b) N2 - Electronic Raman scattering provides information on excited states, whose collective character as being related to the charge or spin density can be distinguished by using different polarization configurations. We employ time-dependent spin-density functional theory to calculate Raman spectra for circular semiconductor quantum dots with up to 10 electrons for the polarized and depolarized configuration and in dependence on an external magnetic field and the momentum transfer. Our results demonstrate an increase of the collective (or many-particle) character of the excitations with increasing momentum transfer and a mixing of spin- and charge-density modes for excitations from ground states with finite spin density. These results have predictive character, because corresponding experiments on few-electron dots have not yet been performed. Y1 - 1999 U6 - https://doi.org/10.1002/(SICI)1521-3951(199909)215:1<365::AID-PSSB365>3.0.CO;2-C VL - 215 SP - 365 EP - 371 PB - Wiley ER - TY - JOUR A1 - Suhrke, Michael A1 - Steffens, Oliver A1 - Rotter, Peter A1 - Rössler, Ulrich T1 - Quantum chaos and magnetotransport in lateral superlattices: The transition from weak to strong modulation potential JF - Physica E: Low-dimensional Systems and Nanostructures N2 - Magnetotransport in lateral superlattices covers a variety of apparently different physics dependent on the amplitude of the modulation potential relative to the Fermi energy ranging from the weakly modulated 2DEG to the antidot lattice. Here we investigate the transition between weak modulation and antidots within the quantum-mechanical theory by studying (i) the single-particle spectrum with respect to quantum signatures of classical chaos and (ii) the change of characteristic features in the magnetoresistance starting from the Kubo formula. KW - Lateral superlattices KW - Quantum chaos KW - Level statistics KW - Magnetotransport KW - Commensurability oscillations Y1 - 1997 U6 - https://doi.org/10.1016/S1386-9477(97)00060-X SN - 1386-9477 VL - 1 IS - 1-4 SP - 281 EP - 287 ER - TY - CHAP A1 - Siders, C. W. A1 - Cavalleri, Andrea A1 - Tóth, Csaba A1 - Wilson, K. R. A1 - Squier, Jeff A. A1 - Barty, C. P. J. A1 - Kammler, Martin A1 - Sokolowski-Tinten, Klaus A1 - Horn-von Hoegen, Michael A1 - von der Linde, D. T1 - Femtosecond X-ray diffraction of short-pulse irradiated semiconductors T2 - Summaries of Papers Presented at the Lasers and Electro-Optics. CLEO '02. Technical Diges, 24-24 May 2002, Long Beach, CA, USA N2 - Summary form only given, as follow. Ultrafast optical-pump, X-ray diffraction probe experiments are providing new ways to study transient processes including the direct observation of the atomic motion by which many solid-state processes and chemical and biochemical reactions take place. Current table-top-terawatt femtosecond laser systems provide an attractive source of few-hundred femtosecond duration bursts of angstrom-scale X-ray radiation with fluxes comparable to standard rotating anode sources. Their compact size enables time resolved structural dynamics to be studied in the small laboratory with temporal resolution better than typical molecular vibrational periods. Ultrafast structural dynamics in crystalline samples are readily studied with such systems and experiments to be discussed in this talk include ultrafast non-thermal solid-to-liquid transition in thin single-crystal Ge-111 films grown on Si-111 substrates; ultrafast non-thermal solid-to-solid transitions in bulk vanadium dioxide from a low temperature insulating phase to a high temperature metallic phase; and harmonic and anharmonic coherent acoustic dynamics in layered Ge-111/Si-111 and bulk GaAs-111 samples. Future improvements in high-average power short-pulse lasers will enable the study of a wider class of materials such as amorphous solids or liquid-phase dynamics of simple molecules, while proposed 4th generation light sources based upon single-pass X-ray free-electron lasers will permit singleshot structural determination of complex biomolecules. KW - high-speed techniques KW - X-ray diffraction KW - laser beam effects KW - semiconductor materials KW - solid-liquid transformations KW - solid-state phase transformations KW - metal-insulator transition Y1 - 2002 U6 - https://doi.org/10.1109/CLEO.2002.1033997 SP - 297 EP - 298 PB - IEEE ER - TY - JOUR A1 - Sokolowski-Tinten, Klaus A1 - Horn-von Hoegen, Michael A1 - von der Linde, D. A1 - Cavalleri, Andrea A1 - Siders, C. W. A1 - Brown, F. L. H. A1 - Leitner, D. M. A1 - Tóth, Csaba A1 - Squier, Jeff A. A1 - Barty, C. P. J. A1 - Wilson, K. R. A1 - Kammler, Martin T1 - Transient lattice dynamics in fs-laser-excited semiconductors probed by ultrafast X-ray diffraction JF - Journal de Physique IV N2 - A study of lattice dynamics in fs-laser-excited crystalline bulk Ge and Ge/Si-heterostructures, using time-resolved x-ray diffraction, was presented. Fast energy transport deep into the bulk of the material, coherent acoustic phonon dynamics, lattice anharmonicity, and vibrational transport across a buried interfaces were observed. Graphs showing time-dependent shifts of the centroid of the measured rocking curves in the Ge-overlayer and in the Si-substrate for different fluences, were presented. Y1 - 2001 U6 - https://doi.org/10.1051/jp4:2001290 VL - 11 IS - Pr2 SP - 473 EP - 477 PB - EDP ER - TY - JOUR A1 - Cavalleri, Andrea A1 - Siders, C. W. A1 - Brown, F. L. H. A1 - Leitner, D. M. A1 - Tóth, Csaba A1 - Squier, Jeff A. A1 - Barty, C. P. J. A1 - Wilson, K. R. A1 - Sokolowski-Tinten, Klaus A1 - Horn-von Hoegen, Michael A1 - von der Linde, D. A1 - Kammler, Martin T1 - Anharmonic lattice dynamics in germanium measured with ultrafast x-ray diffraction JF - Physical review letters N2 - Damping of impulsively generated coherent acoustic oscillations in a femtosecond laser-heated thin germanium film is measured as a function of fluence by means of ultrafast x-ray diffraction. By simultaneously measuring picosecond strain dynamics in the film and in the unexcited silicon substrate, we separate anharmonic damping from acoustic transmission through the buried interface. The measured damping rate and its dependence on the calculated temperature of the thermal bath is consistent with estimated four-body, elastic dephasing times (T2) for 7-GHz longitudinal acoustic phonons in germanium. Y1 - 2000 U6 - https://doi.org/10.1103/PhysRevLett.85.586 VL - 85 IS - 3 SP - 586 EP - 589 PB - APS ER - TY - JOUR A1 - Sokolowski-Tinten, Klaus A1 - Cavalleri, Andrea A1 - Siders, C. W. A1 - Brown, F. L. H. A1 - Leitner, D. M. A1 - Tóth, Csaba A1 - Kammler, Martin A1 - Horn-von Hoegen, Michael A1 - von der Linde, D. A1 - Squier, Jeff A. A1 - Barty, C. P. J. A1 - Wilson, K. R. T1 - Time-resolved x-ray diffraction study of ultrafast acoustic phonon dynamics in Ge/Si-heterostructures JF - Chemical Physics N2 - Using time-resolved x-ray diffraction the ultafast strain dynamics in fs-laserexcited Ge/Si-heterostructures has been studied. A fluence dependent, anharmonic damping of the impulsively generated acoustic phonons and vibrational transport across the buried Ge/Si-interface are observed. Y1 - 2001 U6 - https://doi.org/10.1007/978-3-642-56546-5_81 VL - 66 SP - 281 EP - 283 PB - Springer ER - TY - JOUR A1 - Siders, C. W. A1 - Cavalleri, Andrea A1 - Sokolowski-Tinten, Klaus A1 - Tóth, Csaba A1 - Guo, T. A1 - Kammler, Martin A1 - Horn-von Hoegen, Michael A1 - Wilson, K. R. A1 - von der Linde, D. A1 - Barty, C. P. J. T1 - Direct Observation of Ultrafast Non-thermal Melting by Ultrafast X-ray Diffraction JF - Ultrafast Phenomena XII N2 - Ultrafast nonthermal melting of femtosecond laser-irradiated germanium was observed directly for the first time using sub-picosecond, 1.54-angstrom x-ray diffraction. Such measurements allow the study of transient atomic motion fundamental to many processes in physics, chemistry, and biology. Y1 - 2000 U6 - https://doi.org/10.1007/978-3-642-56546-5_80 VL - 66 SP - 276 EP - 280 PB - Springer ER - TY - JOUR A1 - Sokolowski-Tinten, Klaus A1 - Blome, Christian A1 - Blums, Juris A1 - Shymanovich, Uladzimir A1 - Nicoul, M. A1 - Cavalleri, Andrea A1 - Tarasevitch, A. A1 - Horn-von Hoegen, Michael A1 - Kammler, Martin A1 - von der Linde, D. T1 - Ultrafast X-ray diffraction JF - Ultrafast Phenomena XIV N2 - In the last few years the generation of femtosecond pulses in the X-ray regime has become possible. These ultrashort X-ray pulses have enabled femtosecond time- resolution to be extended to X-rays. Y1 - 2005 U6 - https://doi.org/10.1007/3-540-27213-5_53 VL - 79 SP - 170 EP - 174 PB - Springer ER - TY - JOUR A1 - Siders, C. W. A1 - Cavalleri, Andrea A1 - Sokolowski-Tinten, Klaus A1 - Tóth, Csaba A1 - Guo, T. A1 - Kammler, Martin A1 - Horn-von Hoegen, Michael A1 - Wilson, K. R. A1 - von der Linde, D. A1 - Barty, C. P. J. T1 - Detection of nonthermal melting by ultrafast X-ray diffraction JF - Science N2 - Using ultrafast, time-resolved, 1.54 angstrom x-ray diffraction, thermal and ultrafast nonthermal melting of germanium, involving passage through nonequilibrium extreme states of matter, was observed. Such ultrafast, optical-pump, x-ray diffraction probe measurements provide a way to study many other transient processes in physics, chemistry, and biology, including direct observation of the atomic motion by which many solid-state processes and chemical and biochemical reactions take place. Y1 - 1999 U6 - https://doi.org/10.1126/science.286.5443.1340 VL - 286 IS - 5443 SP - 1340 EP - 1342 ER - TY - CHAP A1 - Sokolowski-Tinten, Klaus A1 - Blome, Christian A1 - Blums, Juris A1 - Shymanovich, Uladzimir A1 - Nicoul, M. A1 - Cavalleri, Andrea A1 - Tarasevitch, A. A1 - Horn-von Hoegen, Michael A1 - Kammler, Martin A1 - von der Linde, Dietrich ED - Kobayashi, Tetsuro T1 - Ultrafast X-ray diffraction T2 - Ultrafast Phenomena XIV N2 - In the last few years the generation of femtosecond pulses in the X-ray regime has become possible. These ultrashort X-ray pulses have enabled femtosecond time- resolution to be extended to X-rays. Y1 - 2004 SN - 978-3-540-27213-7 U6 - https://doi.org/10.1007/3-540-27213-5_53 VL - 79 SP - 170 EP - 174 PB - Springer CY - Berlin, Heidelberg ER - TY - CHAP A1 - Sokolowski-Tinten, Klaus A1 - von der Linde, D. A1 - Siders, C. W. A1 - Cavalleri, Andrea A1 - Tóth, Csaba A1 - Guo, T. A1 - Wilson, K. R. A1 - Barty, C. P. J. A1 - Kammler, Martin A1 - Horn-von Hoegen, Michael T1 - Lattice dynamics of femtosecond laser-excited semiconductors probed by ultrafast x-ray diffraction T2 - Applications of High Field and Short Wavelength Sources VIII N2 - The present knowledge of the atomic structure of matter is to a large extent due to x-ray spectroscopies. Y1 - 1999 U6 - https://doi.org/10.1364/HFSW.1999.PD3 PB - Optica ER - TY - JOUR A1 - Pan, Mi A1 - Linner, Thomas A1 - Pan, Wei A1 - Cheng, Huimin A1 - Bock, Thomas T1 - Influencing factors of the future utilisation of construction robots for buildings: A Hong Kong perspective JF - Journal of Building Engineering N2 - Construction robots are expected to have disruptive impacts on the building industry, but 8 there is still a lack of utilisation. While significant attention has been paid to technical 9 advancement, little has been done to comprehensively understand the broader societal issues 10 associated with the use of this technology. This paper aims to provide a holistic exploration 11 of the influencing factors of the future utilisation of construction robots in a systems manner, 12 analyse the interactions among these factors and identify the key ones that are most 13 influential in shaping the technological transformation. A modified fuzzy decision-making 14 trial and evaluation laboratory (DEMATEL) method is developed and applied. Hong Kong 15 was selected as the desirable case for the study due to its vibrant yet challenging built 16 environments. Factors were first systematically identified and synthesised before being 17 empirically verified, evaluated and analysed through the modified fuzzy DEMATEL. The 18 results demonstrate the multi-faceted and complexly interrelated factors influencing the 19 utilisation of construction robots. Eleven influencing factors were determined as critical for 20 shaping the future trajectory of robotic applications, among which “construction cost”, 21 “governmental support” and “the scale of prefabrication” are the most influential ones. The 22 findings indicate that more interdisciplinary efforts and broader non-technical discussions are 23 needed to achieve the successful transition of the industry towards robotic construction. The 24 findings further reveal the driving forces of environmental pressures behind the future 25 utilisation of construction robots. Detailed utilisation scenarios which fit to the evolution of 26 the whole society are recommended for future research. Y1 - 2020 U6 - https://doi.org/10.1016/j.jobe.2020.101220 VL - 30 IS - July PB - Elsevier ER - TY - JOUR A1 - Hornberger, Helga A1 - Marquis, Peter M. A1 - Christiansen, Silke H. A1 - Albrecht, M. A1 - Strunk, Horst P. A1 - Franks, J. T1 - Microstructure of a high strength alumina-glass composite combined with a diamond like carbon coating JF - Electron Microscopy and Analysis N2 - We investigate the mechanical and microstructural properties of a diamond-like carbon coating (DLC) which is deposited by plasma enhanced chemical vapor deposition (PECVD) onto an alumina/aluminosilicate glass composite used for biomedical applications. Ball-on-ring tests yield a fracture strength that is essentially influenced by the surface topology/roughness. The surface topology of the coating is investigated by atomic force microscopy (AFM). Tribology tests and nanoindentation represent the wear resistance and hardness; these are properties that are mainly influenced by the microstructural properties of the DLC coating. This microstructure is investigated by transmission electron microscopy (TEM) and analyzed by parallel electron energy loss spectroscopy (PEELS). For the general applicability of the coated composite, the interfacial adhesion of the DLC coating on the comparably rough substrate (roughness amplitudes and wavelengths are in the micrometer range) is important. Therefore, we focus on TEM investigations that show the interface to be free of gaps and pores that we, together with a characteristic microstructure adjacent to the interface, relate to the excellent adhesion. The interlayer consists of a high density of SiC grains, part of them directly bound to the substrate, and part of them bound to other SiC grains. This interlayer is followed by an essentially different region of the coating as concerns the microstructure; this region consists of nanocrystalline diamond particles embedded in an amorphous carbon matrix. It is this heterogeneous microstructure to which we attribute (i) the good adhesion based upon the interface stabilizing SiC grains, and (ii) the high hardness and wear resistance based upon the diamond nanocrystals in the coating. Y1 - 1995 U6 - https://doi.org/10.1557/JMR.1996.0244 SP - 559 EP - 562 ER - TY - JOUR A1 - Christiansen, Silke H. A1 - Albrecht, M. A1 - Strunk, Horst P. A1 - Hornberger, Helga A1 - Marquis, Peter M. A1 - Franks, J. T1 - Mechanical properties and microstructural analysis of a diamond-like carbon coating on an alumina/glass composite JF - Journal of Materials Research N2 - We investigate the mechanical and microstructural properties of a diamond-like carbon coating (DLC) which is deposited by plasma enhanced chemical vapor deposition (PECVD) onto an alumina/aluminosilicate glass composite used for biomedical applications. Ball-on-ring tests yield a fracture strength that is essentially influenced by the surface topology/roughness. The surface topology of the coating is investigated by atomic force microscopy (AFM). Tribology tests and nanoindentation represent the wear resistance and hardness; these are properties that are mainly influenced by the microstructural properties of the DLC coating. This microstructure is investigated by transmission electron microscopy (TEM) and analyzed by parallel electron energy loss spectroscopy (PEELS). For the general applicability of the coated composite, the interfacial adhesion of the DLC coating on the comparably rough substrate (roughness amplitudes and wavelengths are in the micrometer range) is important. Therefore, we focus on TEM investigations that show the interface to be free of gaps and pores that we, together with a characteristic microstructure adjacent to the interface, relate to the excellent adhesion. The interlayer consists of a high density of SiC grains, part of them directly bound to the substrate, and part of them bound to other SiC grains. This interlayer is followed by an essentially different region of the coating as concerns the microstructure; this region consists of nanocrystalline diamond particles embedded in an amorphous carbon matrix. It is this heterogeneous microstructure to which we attribute (i) the good adhesion based upon the interface stabilizing SiC grains, and (ii) the high hardness and wear resistance based upon the diamond nanocrystals in the coating. Y1 - 1996 U6 - https://doi.org/10.1557/JMR.1996.0244 VL - 11 IS - 8 SP - 1934 EP - 1942 ER - TY - JOUR A1 - Hornberger, Helga A1 - Marquis, Peter M. A1 - Christiansen, Silke H. A1 - Strunk, Horst P. T1 - Microstructure of a high strength alumina glass composite JF - Journal of Materials Research N2 - The morphology and microstructure of an Al2O3 glass composite (trade name In-Ceram, Vita Zahnfabrik) were studied using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The composite was produced by infiltration of a lanthanum-based glass throughout a porous Al2O3 body. This alumina body was formed by three classes of particles differing in size and shape: faceted particles typically ≤4 μm in diameter, platelets of average diameter 8 μm, 1.5 μm thickness, and small spheres 0.4 μm in diameter. The outstanding strength properties of the composite (600 MPa, ball-on-ring test) are a result of the high wetting capability of the glass phase on the Al2O3 surface. In addition, plastic strain relaxation in the faceted particles by dislocation formation compensates partially for residual stresses and impedes crack formation at the glass/Al2O3 interface. Y1 - 1996 U6 - https://doi.org/10.1557/JMR.1996.0104 VL - 11 IS - 4 SP - 855 EP - 858 ER -