@article{WeberDrueekeLangewitzetal., author = {Weber, Karsten and Dr{\"u}eke, Ricarda and Langewitz, Oliver and Nagenborg, Michael}, title = {Konvergente Medien, Fragmentierung der {\"O}ffentlichkeit und medienethische Anmerkungen}, series = {Merz Medien + Erziehung, Zeitschrift f{\"u}r Medienp{\"a}dagogik}, volume = {53}, journal = {Merz Medien + Erziehung, Zeitschrift f{\"u}r Medienp{\"a}dagogik}, number = {6}, abstract = {Medienkonvergenz f{\"o}rdert 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 {\"O}ffentlichkeit beizutragen, andererseits existieren Bef{\"u}rchtungen, dass sie die bereits bestehende Fragmentierung der {\"O}ffentlichkeit verst{\"a}rken. Am Beispiel der politischen Kommunikation in konvergenten Medien wird die Plausibilit{\"a}t entsprechender Prognosen untersucht.}, language = {de} } @article{Weber, author = {Weber, Karsten}, title = {Im Netz von Clans}, series = {iz3w - Zeitschrift zwischen Nord und S{\"u}d}, journal = {iz3w - Zeitschrift zwischen Nord und S{\"u}d}, number = {315}, pages = {20 -- 23}, language = {de} } @article{WeberNagenborgDrueekeetal., author = {Weber, Karsten and Nagenborg, Michael and Dr{\"u}eke, Ricarda and Langewitz, Oliver}, title = {Ubiquitous Media}, series = {Merz Medien + Erziehung, Zeitschrift f{\"u}r Medienp{\"a}dagogik}, volume = {53}, journal = {Merz Medien + Erziehung, Zeitschrift f{\"u}r Medienp{\"a}dagogik}, number = {6}, pages = {102 -- 110}, abstract = {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 {\"u}ber 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.}, language = {de} } @article{Weber, author = {Weber, Karsten}, title = {Gewalt in den Medien}, series = {Ethica}, volume = {18}, journal = {Ethica}, number = {2}, pages = {1 -- 17}, language = {de} } @article{RoedigerWeber, author = {R{\"o}diger, Karl-Heinz and Weber, Karsten}, title = {und noch einmal: Was ist I\&G?}, series = {FIfF Kommunikation}, volume = {27}, journal = {FIfF Kommunikation}, number = {1}, pages = {7}, language = {de} } @article{WeberDrueeke, author = {Weber, Karsten and Dr{\"u}eke, Ricarda}, title = {Konvergente Medien, Fragmentierung der {\"O}ffentlichkeit und medienethische Anmerkungen}, series = {Zeitschrift f{\"u}r Kommunikations{\"o}kologie und Medienethik}, volume = {12}, journal = {Zeitschrift f{\"u}r Kommunikations{\"o}kologie und Medienethik}, number = {1}, pages = {1 -- 7}, language = {de} } @article{OrwatRaabeBuchmannetal., author = {Orwat, Carsten and Raabe, Oliver and Buchmann, Erik and Anandasivam, Arun and Freytag, Johan-Christoph and Helberger, Natali and Ishii, Kei and Lutterbeck, Bernd and Neumann, Dirk and Otter, Thomas and Pallas, Frank and Reussner, Ralf and Sester, Peter and Weber, Karsten and Werle, Raymund}, title = {Software als Institution und ihre Gestaltbarkeit}, series = {Informatik-Spektrum}, volume = {33}, journal = {Informatik-Spektrum}, number = {6}, doi = {10.1007/s00287-009-0404-z}, pages = {626 -- 633}, abstract = {Software regelt immer mehr zwischenmenschliche Interaktionen. {\"U}blicherweise werden die Funktionsmechanismen, Wirkungen und Gestaltungsoptionen von Regeln in der Institutionenforschung behandelt. In diesem Artikel soll beleuchtet werden, inwieweit sich Ans{\"a}tze der Institutionenforschung auf Software anwenden lassen und was sich aus dieser Forschungsperspektive zu den Regelungswirkungen und Gestaltungsoptionen von Software ableiten l{\"a}sst.}, language = {de} } @article{Weber, author = {Weber, Karsten}, title = {Information Ethics in a Different Voice, Or}, series = {IRIE - International Review of Information Ethics}, volume = {13}, journal = {IRIE - International Review of Information Ethics}, number = {1}, pages = {6 -- 11}, abstract = {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.}, language = {en} } @article{WeberHaug, author = {Weber, Karsten and Haug, Sonja}, title = {Geocaching und Raumnutzung}, series = {Standort - Zeitschrift f{\"u}r angewandte Geographie}, volume = {36}, journal = {Standort - Zeitschrift f{\"u}r angewandte Geographie}, number = {1}, doi = {10.1007/s00548-012-0195-3}, pages = {17 -- 24}, abstract = {Geocaching ist eine Art internetbasierte Schnitzeljagd, die im {\"o}ffentlichen Raum stattfindet. Der Artikel erl{\"a}utert die Funktionsweise des Geocaching als Freizeitbesch{\"a}ftigung und beschreibt anhand einer Datenerhebung die Verbreitung in Deutschland. Mit den stark steigenden Teilnehmerzahlen gehen Konflikte bei der Nutzung des {\"o}ffentlichen Raums - insbesondere sind hiervon naturnahe R{\"a}ume wie W{\"a}lder betroffen - und von Privatbesitz einher. Die Konfliktfelder werden exemplarisch aufgef{\"u}hrt, die Herausforderungen f{\"u}r die angewandte Geographie dargelegt. Durch die Anwendung neuer Technologien wie des GPS im Freizeitbereich bildet sich eine neue Form der Raumnutzung heraus. Damit verbunden sind f{\"u}r die angewandte Geographie noch weitgehend ungenutzte M{\"o}glichkeiten der Stadtentwicklung, des Regionalmanagements oder der Bildung. Zugleich treten mit der zunehmenden Verbreitung des Geocaching neue Konfliktfelder der Raumnutzung offen zu Tage.}, language = {de} } @article{WeberBittnerManzeschkeetal., author = {Weber, Karsten and Bittner, Uta and Manzeschke, Arne and Rother, Elisabeth and Quack, Fredericke and Dengler, Kathrin and Fangerau, Heiner}, title = {Taking Patient Privacy and Autonomy More Seriously}, series = {American Journal of Bioethics}, volume = {12}, journal = {American Journal of Bioethics}, number = {9}, doi = {10.1080/15265161.2012.699147}, pages = {51 -- 53}, language = {en} } @misc{HornbergerThielVollmann, author = {Hornberger, Helga and Thiel, Norbert and Vollmann, Markus}, title = {Fully ceramic tooth replacement with a frame made of cer-stabilised zircon-oxide}, pages = {8}, abstract = {Vollkeramischer Zahnersatz mit einem Ger{\"u}st, das aus einem Ger{\"u}stmaterial 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 Ger{\"u}st von 0-40 Vol\% bezogen auf das Volumen des Ger{\"u}sts sowie einer auf das Ger{\"u}stmaterial abgestimmten Verblendkeramik.Die Erfindung betrifft die Verwendung von cer-stabilisiertem ZrO2 zur Herstellung von Ger{\"u}stmaterialien, die als Restauration im Dentalbereich einsetzbar sind.}, language = {en} } @misc{AechtnerHornbergerNageletal., author = {Aechtner, Stefan and Hornberger, Helga and Nagel, Emil and Thiel, Norbert}, title = {Composite material and method for the preparation thereof}, pages = {5}, abstract = {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.}, language = {en} } @misc{MuerrleHornberger, author = {Muerrle, Ulrich and Hornberger, Helga}, title = {Method of making a ceramic restoration}, pages = {8}, abstract = {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).}, language = {en} } @article{Weber, author = {Weber, Karsten}, title = {New Mobile Devices and Surveillance}, series = {Postmodern Openings Journal}, volume = {3}, journal = {Postmodern Openings Journal}, number = {3}, abstract = {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.}, language = {en} } @article{ManzeschkeWeberFangerauetal., author = {Manzeschke, Arne and Weber, Karsten and Fangerau, Heiner and Rother, Elisabeth and Dengler, Kathrin}, title = {An ethical evaluation of telemedicine applications must consider four major aspects}, series = {International Journal of Technology Assessment in Health Care}, volume = {29}, journal = {International Journal of Technology Assessment in Health Care}, number = {1}, doi = {10.1017/S0266462312000773}, pages = {110 -- 111}, language = {en} } @article{Weber, author = {Weber, Karsten}, title = {What is it like to encounter an autonomous artificial agent?}, series = {AI \& Society}, volume = {28}, journal = {AI \& Society}, number = {4}, doi = {10.1007/s00146-013-0453-3}, pages = {483 -- 489}, abstract = {Following up on Thomas Nagel's paper "What is it like to be a bat?" and Alan Turing's essay "Computing machinery and intelligence," it shall be claimed that a successful interaction of human beings and autonomous artificial agents depends more on which characteristics human beings ascribe to the agent than on whether the agent really has those characteristics. It will be argued that Masahiro Mori's concept of the "uncanny valley" as well as evidence from several empirical studies supports that assertion. Finally, some tentative conclusions concerning moral implications of the arguments presented here shall be drawn}, language = {en} } @article{Weber, author = {Weber, Karsten}, title = {Internet = Demokratie?}, series = {Ethica}, volume = {21}, journal = {Ethica}, number = {4}, language = {de} } @article{Weber, author = {Weber, Karsten}, title = {Vorausschau und Regulierung von Innovationsprozessen im Bereich der ubiquit{\"a}ren Informations- und Kommunikationstechnologie}, series = {Modern Management Review / Dawna Nazwa - Zardądzanie i Marketing}, volume = {20}, journal = {Modern Management Review / Dawna Nazwa - Zardądzanie i Marketing}, number = {3}, doi = {10.7862/rz.2013.mmr.39}, abstract = {On the one hand technological innovations can create new markets and can provide for solutions of current social problems; on the other hand the can raise questions concerning environmental and/or social adequacy on short-, middle-, and long-range time scales. In or-der to strengthen the positive outcomes of innovations and to reduce or even prevent nega-tive effects, the task of technology assessment is to predict the positive as well as the nega-tive effects and repercussions of innovations as early as possible. However, it must be pre-supposed that first, it must be possible to make to a certain extent reliable predications about the future development and second, that regulatory measurements in order to strengthen the positive outcomes of innovations and to reduce or even prevent negative effects will find their respective addressees. But if one takes, for instance, ubiquitous information and com-munication technology into account it can be demonstrated that those conditions rarely can be met. This is the result of the types of innovation which take place in case of ICT as well as of the so-called Collingridge dilemma. Both factors reduce the reliability of predictions. Furthermore, regulatory measurements often do not find their addressees since the borders of the societal subsystems in which innovation take place are blurring and therefore, these subsystems often cannot be reached with mainstream regulatory approaches like laws.}, language = {de} } @article{Weber, author = {Weber, Karsten}, title = {{\"O}konomische {\"U}berlegungen zum Wissenschaftsbetrieb}, series = {Modern Management Review / Dawna Nazwa - Zardądzanie i Marketing}, volume = {20}, journal = {Modern Management Review / Dawna Nazwa - Zardądzanie i Marketing}, number = {4}, doi = {10.7862/rz.2013.hss.55}, abstract = {Nachhaltigkeit und nachhaltiges Wirtschaften sind sp{\"a}testens 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 Energietr{\"a}ger sind hierf{\"u}r sowohl als endliche Ressourcen als auch als Gef{\"a}hrdung anderer knapper Ressourcen wie eine saubere Umwelt ein paradigmatisches Beispiel. Da es jedoch nicht nur materielle Ressourcen, sondern auch Immaterialg{\"u}ter gibt, soll untersucht werden, ob Konzepte der Nachhaltigkeit und des nachhaltigen Wirtschaftens auch in Bezug auf Immaterialg{\"u}ter wie Informationen und Wissen angewendet werden k{\"o}nnen. Dazu wird es notwendig sein, zun{\"a}chst die spezifischen {\"o}konomischen Eigenschaften von Informatio-nen und Wissen herauszuarbeiten. Dabei zeigt sich, dass Immaterialg{\"u}ter durch Anwendung von Immaterialg{\"u}terrechten zu knappen Ressourcen gemacht werden k{\"o}nnen. Wenn aber auch Informationen und Wissen faktisch zu den knappen Ressourcen gez{\"a}hlt werden m{\"u}s-sen, so macht es Sinn, Nachhaltigkeit auch f{\"u}r Immaterialg{\"u}ter 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 l{\"a}nger stattfindenden Ver{\"a}nderungen des Wissenschaftsbetriebs und des wissenschaft-lichen Publikationswesens gef{\"a}hrden 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 w{\"a}ren, da beide Teile des wissenschaftlichen Publikationswesens aufeinander angewiesen sind.}, language = {de} } @article{Weber, author = {Weber, Karsten}, title = {Is there really a concept called "inherent ethical concern"?}, series = {American Journal of Bioethics Neuroscience}, volume = {5}, journal = {American Journal of Bioethics Neuroscience}, number = {1}, doi = {10.1080/21507740.2013.868377}, pages = {39 -- 40}, language = {en} } @article{Weber, author = {Weber, Karsten}, title = {Normative Herausforderungen an Technik f{\"u}r die Pflege im Alter}, series = {Hauswirtschaft und Wissenschaft. Europ{\"a}ische Zeitschrift f{\"u}r Haushalts{\"o}konomie, Haushaltstechnik und Sozialmanagement}, volume = {62}, journal = {Hauswirtschaft und Wissenschaft. Europ{\"a}ische Zeitschrift f{\"u}r Haushalts{\"o}konomie, Haushaltstechnik und Sozialmanagement}, number = {3}, pages = {1 -- 8}, subject = {Altengerechte Technik}, language = {de} } @article{SwigonWeber, author = {Swigon, Marzena and Weber, Karsten}, title = {Managing Knowledge and Information by Students}, series = {Journal for Information \& Knowledge Management}, volume = {13}, journal = {Journal for Information \& Knowledge Management}, number = {4}, doi = {10.1142/S0219649214500300}, abstract = {The concept of Personal Knowledge and Information Management (PKIM) is based, among others, on two theories: Personal Information Management (PTM) and Personal Knowledge Management (PKM), which hitherto were both subjects of separate studies. Moreover, the concept of PKIM is related to IL, which is a concept of information skills and competences of individuals — a person who manages knowledge has to be information literate. Some of the empirical studies results in the field of PKIM, started in Poland and recently continued in Germany, are presented. As the research method an unstructured questionnaire with open questions was used. Given the results of the survey as well as taking into account the subject literature, the concepts of PIM, PKM, and Information Literacy (IL) seem to be compatible and connected with each other. Our respondents perceive Knowledge and Information as well as knowledge management (KM) and information management (IM) in the context of learning and studying as integrated areas of interests. Although they do see differences between them, interconnections and relations seem more important. Furthermore, KM and IM are recognized as tools of coping with information overload. All aspects that have repercussions on KM and IM are related to three categories: personal characteristics, environment (macro and micro environment), and knowledge and information sources.}, language = {en} } @article{HornbergerMarquisFranks, author = {Hornberger, Helga and Marquis, Peter M. and Franks, J.}, title = {The impact of diamond-like coatings on the strength of dental ceramics}, series = {Journal of Dental Research}, volume = {74}, journal = {Journal of Dental Research}, pages = {522}, language = {en} } @article{HornbergerMarquisChristiansenetal., author = {Hornberger, Helga and Marquis, Peter M. and Christiansen, Silke H. and Albrecht, Manuel and Strunk, Horst P. and Franks, J.}, title = {Microstructure of a high strength alumina-glass composite combined with a diamond like carbon coating}, series = {Electron Microscopy and Analysis}, journal = {Electron Microscopy and Analysis}, doi = {10.1557/JMR.1996.0244}, pages = {559 -- 562}, abstract = {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.}, language = {en} } @article{HornbergerMarquis, author = {Hornberger, Helga and Marquis, Peter M.}, title = {Mechanical properties and microstructure of In-Ceram}, series = {Glastechnische Berichte - Glass Science and Technology}, volume = {68}, journal = {Glastechnische Berichte - Glass Science and Technology}, number = {6}, pages = {188 -- 194}, language = {en} } @article{HornbergerWeissmannLutz, author = {Hornberger, Helga and Weissmann, R. and Lutz, N.}, title = {Machining of silica glasses using excimer laser radiation}, series = {Glastechnische Berichte - Glass Science and Technology}, volume = {69}, journal = {Glastechnische Berichte - Glass Science and Technology}, number = {2}, pages = {44 -- 49}, language = {en} } @article{HornbergerMarquisChristiansenetal., author = {Hornberger, Helga and Marquis, Peter M. and Christiansen, Silke H. and Strunk, Horst P.}, title = {Microstructure of a high strength alumina glass composite}, series = {Journal of Materials Research}, volume = {11}, journal = {Journal of Materials Research}, number = {4}, doi = {10.1557/JMR.1996.0104}, pages = {855 -- 858}, abstract = {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.}, language = {en} } @article{ChristiansenAlbrechtStrunketal., author = {Christiansen, Silke H. and Albrecht, Manuel and Strunk, Horst P. and Hornberger, Helga and Marquis, Peter M. and Franks, J.}, title = {Mechanical properties and microstructural analysis of a diamond-like carbon coating on an alumina/glass composite}, series = {Journal of Materials Research}, volume = {11}, journal = {Journal of Materials Research}, number = {8}, doi = {10.1557/JMR.1996.0244}, pages = {1934 -- 1942}, abstract = {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.}, language = {en} }