@article{KaessStrahringerWestner, author = {K{\"a}ss, Sebastian and Strahringer, Susanne and Westner, Markus}, title = {Practitioners' Perceptions on the Adoption of Low Code Development Platforms}, series = {IEEE Access}, journal = {IEEE Access}, publisher = {IEEE}, issn = {2169-3536}, doi = {10.1109/ACCESS.2023.3258539}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-59170}, pages = {30}, abstract = {Organizations are under increasing pressure to develop applications within budget and time at high quality. Therefore, multiple organizations adopt Low Code Development Platforms (LCDP) to develop applications faster and cheaper compared to traditional application development. However, current research on LCDP adoption lacks empirical grounding as well as a deeper understanding of the importance of adoption drivers and inhibitors. We conducted semi-structured interviews and a Delphi study with seventeen experts to address these gaps. As a result, we identified twelve drivers and nineteen inhibitors for adopting LCDPs. We show that the experts have a consensus on the most and the least important drivers and inhibitors for LCDP adoption. Yet, the ranking of the drivers and inhibitors between the most and least important is highly context dependent. For some drivers and inhibitors, the experts' ranking is similar to academic literature, whereas, for others, it differs. In conclusion, the study at hand empirically validates drivers and inhibitors for LCDP adoption, adds six new drivers and six new inhibitors to the body of knowledge, and analyses the importance of these factors.}, language = {en} } @article{DotterHaugWeberetal., author = {Dotter, Caroline and Haug, Sonja and Weber, Karsten and Schnell, Rainer and Scharf, Anna and Altenburcher, Amelie}, title = {Analyzing factors determining vaccination willingness against COVID-19 in Germany 2020}, series = {Vaccine: X}, volume = {14}, journal = {Vaccine: X}, publisher = {Elsevier}, doi = {10.1016/j.jvacx.2023.100342}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-62900}, pages = {6}, abstract = {The study is based on a German single-topic population survey on vaccination willingness against COVID-19 (VWC) by the authors (2020, n = 2014). The single-topic survey allowed us to test several competing explanations for VWC, as discussed in the literature. The VWC in the sample was 67.3\%. Logistic regression was used to identify factors affecting VWC. Being at high risk from COVID-19 and having received flu vaccination have a positive impact on VWC. Perceived VWC of friends has a strong positive effect on respondents' VWC. Bivariate relationships of gender, age, and level of education with VWC were no longer significant in a multivariate analysis. Trust in alternative medicine and belief in conspiracy theories have a negative effect on VWC.}, language = {en} } @misc{OPUS4-266, title = {Angewandte Forschung in der Wirtschaftsinformatik: Prozesse, Technologien, Anwendungen, Systeme und Management}, editor = {Barton, Thomas and Erdlenbruch, Burkhard and Herrmann, Frank and M{\"u}ller, Christian}, publisher = {Verlag News \& Media}, address = {Berlin}, doi = {10.15771/978-3-936527-38-4}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-2660}, abstract = {Die Wirtschaftsinformatik, die von den Mitgliedern des Arbeitskreises Wirtschaftsinformatik an Fachhochschulen im deutschsprachigen Raum vertreten wird, basiert auf drei S{\"a}ulen, n{\"a}mlich der Informatik, der Betriebswirtschaft und der Wirtschaftsinformatik selbst, worunter Systeme zur Steuerung betriebswirtschaftlicher Prozesse verstanden werden - dies entspricht auch der Empfehlung der Gesellschaft f{\"u}r Informatik und liegt den Evaluierungen der Akkreditierungsverfahren zugrunde. Diese S{\"a}ulen inkludieren fast zwangsl{\"a}ufig eine substantielle Heterogenit{\"a}t an Projekten mit der industriellen Praxis wie auch in der Forschung. Die Einreichungen zur Tagung best{\"a}tigten diese Erwartung. Beispiele sind mehrere Arbeiten zur „Datenbank SAP HANA", zu (allgemeinen) Entwicklungsthemen wie zum „Datenbank-Join" oder der „Internetsuche" und zu IT-Systemen wie beispielsweise „F{\"u}nf Jahre produktiver Einsatz eines man- dantenf{\"a}higen Data-Warehouse-Systems". Andere Arbeiten befassen sich mit eher technischen Themen wie mobilen (End-)Ger{\"a}ten wie „Plattformunabh{\"a}ngiges, mobiles, integriertes Hochwassermeldesystem f{\"u}r Mittelhessen" oder „Electronic vs. Mobile Banking" und der Nutzung von Cloud wie beim „Aufbau einer ‚Private Cloud' mit OpenStack". Mehrere Arbeiten befassen sich mit der IT-Unterst{\"u}tzung logistischer Fragestellungen wie die „Ermittlung von prognoserelevanten Absatzzahlen in der Praxis eines großen Lebensmittelkonzerns", mit Prozessen wie „Business Process Excellence und der Zusammenhang mit dem Unternehmenserfolg" sowie mit Management wie „Faktoren f{\"u}r nachhaltigen Unternehmenserfolg".}, subject = {Wirtschaftsinformatik}, language = {de} } @misc{OPUS4-244, title = {Logistische Anwendungen in der Wirtschaftsinformatik}, editor = {Barton, Thomas and Erdlenbruch, Burkhard and Herrmann, Frank and M{\"u}ller, Christian}, publisher = {Verlag News \& Media}, address = {Berlin}, organization = {Arbeitskreis Wirtschaftsinformatik an Fachhochschulen (AKWI)}, isbn = {978-3-936527-24-7}, doi = {10.15771/978-3-936527-24-7}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-2448}, abstract = {Seit jeher zeichnet sich die Wirtschaftsinformatik durch eine große thematische Breite aus, da sie ihre Aufgabe in der Entwicklung und Anwendung von Theorien, Konzepten, Modellen, Methoden und Werkzeugen f{\"u}r die Analyse, Gestaltung und Nutzung von Informationssystemen sieht. Dabei greift die Wirtschaftsinformatik auch auf Ans{\"a}tze der Betriebswirtschaftslehre sowie der Informatik zur{\"u}ck, die sie erweitert, integriert und um eigene spezifische Ans{\"a}tze erg{\"a}nzt. Es freut uns mit diesem Tagungsband Forschungs- und Entwicklungsarbeiten vorstellen zu d{\"u}rfen, die belegen, dass und wie an Fachhochschulen an dieser Aufgabe der Wirtschaftsinformatik im Rahmen der Logistik gearbeitet wird. Eine grundlegende Aufgabe von Wirtschaftsinformatikern ist die Integration heterogener Softwaresysteme zur Unterst{\"u}tzung von Unternehmensprozessen. Ausgehend von einer Anforderungsspezifikation werden f{\"u}r Unternehmen geeignete Softwaresysteme beschafft. In dem Beitrag „Verkn{\"u}pfung von Softwarel{\"o}sungen in einem IT-Logistiknetzwerk" wird quasi der umgekehrten Aufgabestellung nachgegangen, wie n{\"a}mlich heterogene Systeme so verkn{\"u}pft werden k{\"o}nnen, dass mit ihnen gemeinsam Unternehmensprozesse unterst{\"u}tzt werden k{\"o}nnen. W{\"a}hrend in diesem Beitrag die technische Verkn{\"u}pfung {\"u}ber eine dedizierte Architektur nicht im Detail vorgestellt wird, ist sie Gegenstand in dem Beitrag „Ein Informationssystem f{\"u}r das RFID-gest{\"u}tzte Beh{\"a}ltermanagement". Konkret handelt es sich um den Architekturstil REST (Representational State Transfer). Prozessverbesserungen lassen sich durch die Nutzung von Simulations- und Optimierungsmodellen erreichen. Typischerweise werden diese als „stand-alone"- Systeme betrieben, und sie erhalten ihre Daten von einem ERP-, PPS- oder allgemein von einem „Decision Support"-System. Dies erfordert eine Schnittstelle. Einen Vorschlag enth{\"a}lt der Beitrag „Konzeption einer Datenschnittstelle f{\"u}r Klassen von Simulations- und Optimierungsmodellen". Beispiele f{\"u}r die L{\"o}sung von Optimierungsproblemen werden in den Beitr{\"a}gen „Einfuhrzollmanagement - neue Chancen und Herausforderungen f{\"u}r die Standortoptimierung" und „Gestaltung von Logistiknetzen mit der EDA-Heuristik" beschrieben. Kern des ersten Beitrags ist die Formulierung eines geeigneten Optimierungsmodells, welches mit einem rechnergest{\"u}tzter Optimierungssystem gel{\"o}st wird. Im zweiten Beitrag wird die L{\"o}sung von einem sehr anspruchsvollen Optimierungsproblem durch ein heuristisches Verfahren angen{\"a}hert. Ein wichtiges Themengebiet der Wirtschaftsinformatik ist die Verbindung von Gesch{\"a}ftsprozessmodellierung und Softwareentwicklung. Einen Ansatz dazu beschreibt der Beitrag „Modellgetriebene Softwareentwicklung auf der Grundlage realer Gesch{\"a}ftsprozessoptimierung". Generell zunehmende Bedeutung in der Wirtschaftsinformatik hat das Wissensmanagement. In dem Beitrag „Konzept, Methoden und offene Fragen f{\"u}r einen Web-Service zur Analyse des Wissensmanagement-Reifegrades in Logistikunternehmen" wird die Relevanz dieses Themas und sein Umsetzungsgrad bei Logistikunternehmen aus verschiedenen L{\"a}ndern erl{\"a}utert, und es wird ein Rahmenkonzept f{\"u}r ein Wissensmanagement in Logistikunternehmen in Form einer webbasierten Infrastruktur dargestellt.}, subject = {Informationstechnik}, language = {de} } @misc{OPUS4-222, title = {Management und IT. Tagungsband zur AKWI-Fachtagung vom 16. bis 18.09.2012 an der Hochschule Pforzheim (FH)}, editor = {Barton, Thomas and Erdlenbruch, Burkhard and Herrmann, Frank and M{\"u}ller, Christian and Schuler, Joachim}, publisher = {Verlag News \& Media}, address = {Berlin}, organization = {Arbeitskreis Wirtschaftsinformatik an Fachhochschulen (AKWI)}, isbn = {978-3-936527-30-8}, doi = {10.15771/978-3-936527-30-8}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-2225}, abstract = {Wirtschaftsinformatik befasst sich mit allen Themen, die an der Schnittstelle zwischen Informatik und Betriebswirtschaft anzutreffen sind. So geht es in der Wirtschaftsinformatik - basierend auf dem Wissen und dem Verstehen der betriebswirtschaftlichen Konzepte und Anwendungen - insbesondere darum, IT-Systeme f{\"u}r die betriebliche Praxis zu entwickeln, einzuf{\"u}hren und zu betreiben. Eine wissenschaftliche Fachtagung, die den Titel „Management und IT" tr{\"a}gt, setzt an einer solchen Beschreibung der Wirtschaftsinformatik an.}, subject = {Wirtschaftsinformatik}, language = {de} } @misc{OPUS4-216, title = {Herausforderungen an die Wirtschaftsinformatik: Integration und Konnexion}, editor = {Barton, Thomas and Erdlenbruch, Burkhard and Guckert, Michael and Herrmann, Frank and M{\"u}ller, Christian}, publisher = {Verlag News \& Media}, address = {Berlin}, isbn = {978-3-936527-36-0}, doi = {10.15771/978-3-936527-36-0}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-2165}, abstract = {Das aufgerufene Thema „Herausforderungen an die Wirtschaftsinformatik: Integration und Konnexion" provozierte Beitr{\"a}ge, die thematisch ein sehr breites Spektrum abdecken. Neben theoretischen Betrachtungen und Definitionen des sicher noch nicht final gepr{\"a}gten Begriffs der Konnexion gab es auch sehr praktische Beitr{\"a}ge wie die Darstellung von konkreten prototypischen Entwicklungsvorhaben. Auch das ist ein Indiz f{\"u}r die lebendige Landschaft der Wirtschaftsinformatik an den deutschsprachigen Hochschulen f{\"u}r Angewandte Wissenschaften.}, subject = {Wirtschaftsinformatik}, language = {de} } @misc{OPUS4-233, title = {Betriebliche Anwendungssysteme}, editor = {Barton, Thomas and Erdlenbruch, Burkhard and Herrmann, Frank and M{\"u}ller, Christian}, publisher = {Verlag News \& Media}, address = {Berlin}, organization = {Arbeitskreis Wirtschaftsinformatik an Fachhochschulen (AKWI)}, isbn = {978-3-936527-26-1}, doi = {10.15771/978-3-936527-26-1}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-2333}, abstract = {In heutigen Unternehmen werden im Kern alle Aufgaben durch Anwendungssysteme direkt oder durch diese unterst{\"u}tzt erledigt. Folglich beschreiben betriebliche Anwendungssysteme heute im Grunde, welche Aufgaben in Unternehmen {\"u}berhaupt zu l{\"o}sen sind und welche davon automatisiert und somit durch Software erledigt bzw. unterst{\"u}tzt werden k{\"o}nnen. Die Arbeit an und mit Betrieblichen Anwendungssystemen ist gekennzeichnet durch eine große thematische Breite und demonstriert die f{\"u}r die Wirtschaftsinformatik charakteristische Nutzung von Ans{\"a}tzen der Betriebswirtschaftslehre sowie der Informatik. Deswegen erwarteten die Herausgeber sehr heterogene Themenvorschl{\"a}ge und sie wurden nicht entt{\"a}uscht. Die letztlich ausgew{\"a}hlten Themen stellen aktuelle Entwicklungs- und anwendungsorientierte Forschungsprojekte zu Gesch{\"a}ftsprozessen, Standardsoftware, Softwareentwicklung und Betrieb von Anwendungssystemen vor. Dadurch beschreiben sie das heute existierende Berufsbild von Wirtschaftsinformatikern und -innen in der industriellen Praxis.}, language = {de} } @article{Richter, author = {Richter, Stefanie}, title = {Integrated Care for People with Dementia}, series = {Geriatrics}, volume = {2}, journal = {Geriatrics}, number = {1}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/geriatrics2010001}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-22091}, pages = {1 -- 13}, abstract = {This article presents results of the social-scientific evaluation of an established care model for people with dementia developed by the professionals as a result of acute problems in care in north-east Germany. In addition to the central elements of the model, the conditions of intersectoral and interprofessional cooperation as well as the qualification profile requirements of the professional groups involved are presented in detail. The results can give suggestions for the organization of integrated care for people with dementia in other countries. Further, the author would hereby like to highlight the gain from the scientific examination of solutions to problems in the field.}, subject = {Demenz}, language = {en} } @article{PangerlSukulRuecketal., author = {Pangerl, Jonas and Sukul, Pritam and R{\"u}ck, Thomas and Fuchs, Patricia and Weigl, Stefan and Miekisch, Wolfram and Bierl, Rudolf and Matysik, Frank-Michael}, title = {An inexpensive UV-LED photoacoustic based real-time sensor-system detecting exhaled trace-acetone}, series = {Photoacoustics}, volume = {38}, journal = {Photoacoustics}, publisher = {Elsevier}, issn = {2213-5979}, doi = {10.1016/j.pacs.2024.100604}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-71279}, pages = {12}, abstract = {n this research we present a low-cost system for breath acetone analysis based on UV-LED photoacoustic spectroscopy. We considered the end-tidal phase of exhalation, which represents the systemic concentrations of volatile organic compounds (VOCs) - providing clinically relevant information about the human health. This is achieved via the development of a CO2-triggered breath sampling system, which collected alveolar breath over several minutes in sterile and inert containers. A real-time mass spectrometer is coupled to serve as a reference device for calibration measurements and subsequent breath analysis. The new sensor system provided a 3σ detection limit of 8.3 ppbV and an NNEA of 1.4E-9 Wcm 1Hz 0.5. In terms of the performed breath analysis measurements, 12 out of 13 fell within the error margin of the photoacoustic measurement system, demonstrating the reliability of the measurements in the field.}, language = {en} } @article{BauerSterner, author = {Bauer, Franz and Sterner, Michael}, title = {Impacts of lifestyle changes on energy demand and greenhouse gas emissions in Germany}, series = {Renewable and Sustainable Energy Reviews}, volume = {207}, journal = {Renewable and Sustainable Energy Reviews}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1364-0321}, doi = {10.1016/j.rser.2024.114944}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-77682}, pages = {17}, abstract = {Most energy scenario studies typically focus on technological options and fuel substitution for decarbonising future energy systems. Lifestyle changes are rarely considered, although they can significantly reduce energy demand and climate change mitigation efforts. By using an energy system model, this study shows that it is possible to reduce final energy demand in Germany by 61 \% in 2050 relative to 2019 levels, resulting in an annual per capita energy demand of 44 GJ for a representative country of the Global North. This goal can be achieved through a combination of technological measures and lifestyle changes without sacrificing a decent standard of living. Societal chances can eliminate reliance on not-yet-established negative emission technologies, reduce energy dependency, and reduce the need for energy-intensive hydrogen and e-fuels. Downsizing the energy system provides an opportunity for strengthening climate change mitigation, decrease material demand and reduce land use.}, language = {en} } @inproceedings{RuikenLandmannZoelleretal., author = {Ruiken, Axel and Landmann, Philipp and Z{\"o}ller, Ralf and Wolff, Thomas}, title = {Untersuchungen zum Tragverhalten von Einfach- und Mehrfachverbundankern im Zuge des BA 2/2 der A281 in Bremen}, series = {Vortr{\"a}ge der 38. Baugrundtagung, 25. bis 27. September 2024, Bremen}, booktitle = {Vortr{\"a}ge der 38. Baugrundtagung, 25. bis 27. September 2024, Bremen}, publisher = {Aktiv Druck \& Verlag GmbH}, address = {Ebelsbach}, organization = {Deutsche Gesellschaft f{\"u}r Geotechnik e.V. (DGGT)}, isbn = {978-3-932653-57-5}, doi = {10.35096/othr/pub-7766}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-77662}, pages = {129 -- 135}, abstract = {Im Vorfeld zum Neubau der A281 BA2/2 in Bremen wurden u.a. 14 Eignungsanker hergestellt und das Lastabtragsverhalten in den anstehenden Wesersanden ermittelt. Die Verpressk{\"o}rper wurden in Sanden mit mitteldichter und dichter Lagerung angeordnet und dabei die L{\"a}nge und Anzahl der Verpressk{\"o}rper systematisch variiert. Neben der Messung von Kraft und Verschiebung am Ankerkopf wurde mithilfe hochaufl{\"o}sender faseroptischer Instrumentierung von Verpressk{\"o}rpern und Ankerlitzen der Lastabtrag {\"u}ber den reinen Verpressk{\"o}rper hinaus {\"u}ber die gesamte Verbundl{\"a}nge ermittelt. Anhand der Ergebnisse wird die sukzessive Aktivierung der Baugrundwiderst{\"a}nde sichtbar. Die Ergebnisse zeigen einen n{\"a}herungsweise linearen Zusammenhang zwischen den untersuchten 6 m bis 12 m langen Verpressk{\"o}rpern und den ermittelten Herausziehwiderst{\"a}nden im Sand und somit ein deutlich g{\"u}nstigeres Lastabtragsverhalten, als es bisherige Erfahrungen gezeigt haben.}, language = {de} } @article{AlbrechtHellerbrandWeiningeretal., author = {Albrecht, Sophie Viktoria and Hellerbrand, Stefan and Weininger, Florian and Thiel, Charlotte}, title = {Strategies for Minimizing Environmental Impact in Construction: A Case Study of a Cementitious 3D Printed Lost Formwork for a Staircase}, series = {materials}, volume = {18}, journal = {materials}, publisher = {MDPI}, doi = {10.3390/ma18040825}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-79236}, pages = {18}, abstract = {The construction industry faces significant challenges, including environmental sustainability, rising material costs, and a shortage of skilled labor. Digital fabrication technologies offer innovative solutions to address these issues by reducing raw material consumption and waste generation. Among these, 3D printing technologies offer distinct advantages over traditional construction methods, particularly in handling complex geometries. However, the significant environmental impact of cement in 3D printed concrete, due to its high rheological and printability requirements, remains a concern. This study introduces a novel application of 3D printed permanent formwork in the construction of a winder staircase, assessed through an Environmental Life Cycle Assessment (LCA) from cradle to gate. By comparing the environmental impacts of various construction materials and processes, this study highlights the comparative advantages and disadvantages of conventional methods versus 3D printing. The LCA results reveal that traditional production methods, particularly those using plywood formwork, exhibit higher environmental impacts. In contrast, timber formwork performs better than most 3D printed mixtures in terms of Global Warming Potential (GWP), Acidification Potential (AP), and abiotic depletion potential (ADP). The findings of this study underscore the potential of additive manufacturing for sustainable construction, particularly through the use of low-clinker cement in 3D printed formwork, offering a promising pathway towards reducing the environmental footprint of construction activities}, language = {en} } @article{WestnerReichenederMatschi, author = {Westner, Markus and Reicheneder, Matthias and Matschi, Markus}, title = {From Captive Centers to Global Integration}, series = {Information Resources Management Journal}, volume = {38}, journal = {Information Resources Management Journal}, number = {1}, publisher = {IGI Global}, issn = {1533-7979}, doi = {10.4018/IRMJ.373322}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-80406}, pages = {25}, abstract = {Contemporary developments in virtual work and global talent management are transforming information technology (IT) nearshoring and offshoring practices, yet research on organizational responses remains limited. Through expert interviews with 33 IT executives (76\% chief information officers) from Germany's top 500 companies, this article examines organizational models, strategies, and good practices in IT nearshoring and offshoring. It reveals a shift from traditional captive centers toward fully integrated global teams, enabling high-value task delivery and reflecting increased workforce maturity. Companies are expanding their operations driven by talent needs rather than cost savings, with success factors including employee integration and robust on-site management. This study contributes to theory and practice by providing a framework for understanding organizational models in global IT delivery and offering actionable insights for executives, emphasizing workforce integration over geographical separation.}, subject = {Offshoring}, language = {en} } @article{HauslerHolznerEhrnspergeretal., author = {Hausler, Peter and Holzner, Lukas and Ehrnsperger, Matthias and Bierl, Rudolf}, title = {Evaluation of the creep strength of samples produced by fused deposition modeling}, series = {Open Engineering}, volume = {14}, journal = {Open Engineering}, number = {1}, publisher = {de Gruyter}, doi = {10.1515/eng-2024-0084}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-79760}, pages = {10}, abstract = {Data sheets for 3D printing materials typically include softening temperature, impact strength, tensile strength, and stiffness. However, creep strength, an important parameter for components used over an extended period, is usually not included. Nevertheless, this parameter is of significant importance for components that are used over an extended period of time.This study compares the long-term creep behavior of a selection of materials that are commonly used in fused deposition modeling 3D printing. The materials under investigation are acrylonitrile butadiene styrene, acrylonitrile styrene acrylate, polylactic acid, and polycarbonate. In addition, the influence of fiber reinforcements on these materials is also examined. A simple, reproducible test procedure is proposed for users to determine and compare creep resistance of materials. This enables developers to select materials suitable for their own requirements on creep resistance and allows 3D-printing users to compare different materials. Results suggest that fiber reinforcement generally improves creep stability in 3D-printing materials, with GreenTEC Pro Carbon and add:north PC Blend HT LCF showing the most promise in this study.}, language = {en} } @incollection{Leinweber, author = {Leinweber, Juliane}, title = {Digitale Versorgung in der Logop{\"a}die/Sprachtherapie Von der Pr{\"a}senz- und Videotherapie zur Teletherapie}, series = {Digitale Technik f{\"u}r ambulante Pflege und Therapie II - Impulse f{\"u}r die Praxis}, booktitle = {Digitale Technik f{\"u}r ambulante Pflege und Therapie II - Impulse f{\"u}r die Praxis}, editor = {Weber, Karsten and Haug, Sonja and Lauer, Norina and Mohr, Christa and Pfingsten, Andrea and Raptis, Georgios and Bahr, Gudrun}, publisher = {transcript}, address = {Bielefeld}, doi = {10.14361/9783839467275-012}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-65039}, pages = {145 -- 152}, language = {de} } @misc{OPUS4-7391, title = {Digitale Technik f{\"u}r ambulante Pflege und Therapie III}, editor = {Weber, Karsten and Haug, Sonja and Lauer, Norina and Mohr, Christa and Pfingsten, Andrea and Raptis, Georgios and Bahr, Gudrun}, edition = {1. Aufl.}, publisher = {transcript}, address = {Bielefeld}, isbn = {978-3-8394-6728-2}, doi = {10.14361/9783839467282}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-73914}, abstract = {Dieser Artikel untersucht die Machbarkeit und Wirksamkeit einer physiotherapeutischen Tele-Intervention bei Schlaganfallpatient*innen. Die prospektive, nicht kontrollierte Interventionsstudie basiert auf einem Mixed-Methods-Design und analysiert funktionelle Ver{\"a}nderungen sowie die Lebensqualit{\"a}t der Teilnehmenden vor und nach der Intervention. Eingeschlossen wurden postakute und chronische Schlaganfallpatient*innen mit stabilen Krankheitsbildern, die in ihrem h{\"a}uslichen Umfeld lebten. Die Intervention bestand aus videobasierten Einzelsitzungen und einer optionalen Gruppenintervention, die Physiotherapie und Logop{\"a}die kombinierte. Die Ergebnisse zeigten signifikante Verbesserungen in der Arm-Hand-Funktion und der Teilhabef{\"a}higkeit. Die Teletherapie erwies sich als eine praktikable Erg{\"a}nzung zur traditionellen Rehabilitation, insbesondere in l{\"a}ndlichen Regionen, und f{\"o}rderte die Autonomie und das aktive Engagement der Patient*innen in ihrem Genesungsprozess. Die Studie belegt das Potenzial teletherapeutischer Maßnahmen zur {\"U}berbr{\"u}ckung von Versorgungsl{\"u}cken und zur Sicherstellung einer kontinuierlichen, hochfrequenten Rehabilitation.}, subject = {AAL-Technik}, language = {de} } @article{GradZentgrafSchultheissetal., author = {Grad, Marius and Zentgraf, Jan and Schultheiss, Ulrich and Esper, Lukas and Diemar, Andreas and Noster, Ulf and Spiess, Lothar}, title = {Effect of Carbon Content on the Phase Composition, Microstructure and Mechanical Properties of the TiC Layer Formed in Hot-Pressed Titanium-Steel Composites}, series = {Metals}, volume = {14}, journal = {Metals}, number = {9}, publisher = {MDPI AG}, issn = {2075-4701}, doi = {10.3390/met14090959}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-74617}, abstract = {During the hot pressing of pure titanium and different carbon steels in a temperature range of ϑ = 950-1050 °C, a compound layer up to dL≈10 μm thick is formed at the titanium-steel interface. With a higher carbon content of the used steel, the layer thickness increases. The carbon concentration within the layer is in the range of stoichiometry for TiC. Apart from TiC, no other phases can be detected by X-ray diffraction (XRD) measurements inside the formed layer. The calculation of the activation energy for the TiC layer formation is Q = 126.5-136.7 kJ mol-1 and is independent of the carbon content of the steel. The resulting microstructure has a grain size gradient, wherein the mechanical properties, such as hardness and Young's modulus, are almost constant. Statistical analysis using Response Surface Methodology (RSM) indicates that the carbon content of the steel has the most significant influence on layer thickness, followed by annealing temperature and annealing time. By selecting the appropriate carbon steel and the subsequent removal of the steel, it is possible to produce targeted TiC layers on titanium substrates, which holds enormous potential for this material in wear-intensive applications.}, language = {en} } @article{AltmannSchleglVolbert, author = {Altmann, Matthias and Schlegl, Peter and Volbert, Klaus}, title = {A low-power wireless system for energy consumption analysis at mains sockets}, series = {EURASIP Journal on Embedded Systems}, journal = {EURASIP Journal on Embedded Systems}, number = {1}, publisher = {Springer Nature}, doi = {10.1186/s13639-016-0041-y}, pages = {18}, abstract = {Introduction: Improving energy efficiency and reducing energy wastage is an important topic of our time. But it is quite difficult to figure out how much of our total electricity bill can be mapped to which device or at what time the device used it. We believe energy efficiency of normal households can be improved, if this kind of transparency would be available. In this article, we present a system for energy measurement at mains sockets to gain a transparent view of energy consumption for each device in a household. It consists of several smart energy measuring devices (SEMDs) that use a low-power radio protocol to dynamically build and connect to a radio network to transfer power usage date to a server. At the server, the data is stored and can be accessed via web interface. Results: Our primary goal was to build a back-end system for an energy metering platform with very low energy consumption. This platform can provide data for a variety of services that enables users (the consumers) to understand and improve their energy consumption behavior and increase overall energy efficiency of their households.}, language = {en} } @article{MayerRabindranathBoerneretal., author = {Mayer, Matthias and Rabindranath, Raman and B{\"o}rner, Juliane and H{\"o}rner, Eva and Bentz, Alexander and Salgado, Josefina and Han, Hong and B{\"o}se, Holger and Probst, J{\"o}rn and Shamonin (Chamonine), Mikhail and Monkman, Gareth J. and Schlunck, G{\"u}nther}, title = {Ultra-Soft PDMS-Based Magnetoactive Elastomers as Dynamic Cell Culture Substrata}, series = {PLoS ONE}, volume = {8}, journal = {PLoS ONE}, number = {10}, publisher = {PLOS}, doi = {10.1371/journal.pone.0076196}, abstract = {Mechanical cues such as extracellular matrix stiffness and movement have a major impact on cell differentiation and function. To replicate these biological features in vitro, soft substrata with tunable elasticity and the possibility for controlled surface translocation are desirable. Here we report on the use of ultra-soft (Young's modulus <100 kPa) PDMS-based magnetoactive elastomers (MAE) as suitable cell culture substrata. Soft non-viscous PDMS (<18 kPa) is produced using a modified extended crosslinker. MAEs are generated by embedding magnetic microparticles into a soft PDMS matrix. Both substrata yield an elasticity-dependent (14 vs. 100 kPa) modulation of α-smooth muscle actin expression in primary human fibroblasts. To allow for static or dynamic control of MAE material properties, we devise low magnetic field (≈40 mT) stimulation systems compatible with cell-culture environments. Magnetic field-instigated stiffening (14 to 200 kPa) of soft MAE enhances the spreading of primary human fibroblasts and decreases PAX-7 transcription in human mesenchymal stem cells. Pulsatile MAE movements are generated using oscillating magnetic fields and are well tolerated by adherent human fibroblasts. This MAE system provides spatial and temporal control of substratum material characteristics and permits novel designs when used as dynamic cell culture substrata or cell culture-coated actuator in tissue engineering applications or biomedical devices.}, language = {en} } @article{ReinkerBlaesingBierletal., author = {Reinker, Lukas and Bl{\"a}sing, Dominic and Bierl, Rudolf and Ulbricht, Sabina and Dendorfer, Sebastian}, title = {Correlation of Acceleration Curves in Gravitational Direction for Different Body Segments during High-Impact Jumping Exercises}, series = {sensors}, volume = {23}, journal = {sensors}, number = {4}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/s23042276}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-58217}, abstract = {Osteoporosis is a common disease of old age. However, in many cases, it can be very well prevented and counteracted with physical activity, especially high-impact exercises. Wearables have the potential to provide data that can help with continuous monitoring of patients during therapy phases or preventive exercise programs in everyday life. This study aimed to determine the accuracy and reliability of measured acceleration data at different body positions compared to accelerations at the pelvis during different jumping exercises. Accelerations at the hips have been investigated in previous studies with regard to osteoporosis prevention. Data were collected using an IMU-based motion capture system (Xsens) consisting of 17 sensors. Forty-nine subjects were included in this study. The analysis shows the correlation between impacts and the corresponding drop height, which are dependent on the respective exercise. Very high correlations (0.83-0.94) were found between accelerations at the pelvis and the other measured segments at the upper body. The foot sensors provided very weak correlations (0.20-0.27). Accelerations measured at the pelvis during jumping exercises can be tracked very well on the upper body and upper extremities, including locations where smart devices are typically worn, which gives possibilities for remote and continuous monitoring of programs.}, language = {en} } @article{RusavyCechovaDendorferetal., author = {Rusavy, Zdenek and Cechova, Hana and Dendorfer, Sebastian and Kalis, Vladimir and Ismail, Khaled M.}, title = {Is the Finnish grip tight enough? A manometric study of two manual perineal protection techniques}, series = {Acta Obstetricia et Gynecologica Scandinavica}, journal = {Acta Obstetricia et Gynecologica Scandinavica}, edition = {Early view}, publisher = {Wiley}, doi = {10.1111/aogs.15033}, language = {en} } @article{SchmitzNeumannNeumannetal., author = {Schmitz, Paul and Neumann, Christoph Cornelius and Neumann, Carsten and Nerlich, Michael and Dendorfer, Sebastian}, title = {Biomechanical analysis of iliac crest loading following cortico-cancellous bone harvesting}, series = {Journal of Orthopaedic Surgery and Research}, volume = {13}, journal = {Journal of Orthopaedic Surgery and Research}, number = {108}, publisher = {Springer Nature}, doi = {10.1186/s13018-018-0822-1}, pages = {1 -- 8}, abstract = {Background Iliac crest bone harvesting is a frequently performed surgical procedure widely used to treat bone defects. The objective of this study is to assess the biomechanical quantities related to risk for pelvic fracture after harvesting an autologous bone graft at the anterior iliac crest. Methods Finite element models with a simulated harvest site (sized 15 × 20 mm, 15 × 35 mm, 30 × 20 mm and 30 × 35 mm) in the iliac wing are created. The relevant loading case is when the ipsilateral leg is lifted off the ground. Musculoskeletal analysis is utilized to compute the muscle and joint forces involved in this motion. These forces are used as boundary conditions for the finite element analyses. Bone tissue stress is analyzed. Results Critical stress peaks are located between the anterior superior iliac spine (ASIS) and the anterior edge of the harvest site. Irrespective of the graft size, the iliac wing does not show any significant stress peaks with the harvest site being 20 to 25 mm posterior to the ASIS. The harvest area itself inhibits the distribution of the forces applied on the ASIS to extend to the posterior iliac wing. This leads to a lack of stress posterior to the harvest site. A balanced stress distribution with no stress peaks appears when the bone graft is taken below the iliac crest. Conclusion A harvest site located at least 20 to 25 mm posterior to the ASIS should be preferred to minimize the risk of iliac fatigue fracture.}, subject = {Beckenkammknochen}, language = {en} }