TY - JOUR A1 - Günther, Oliver T1 - Vorwort Y1 - 2013 SN - 978-3-941880-75-7 ER - TY - JOUR A1 - Fabian, Benjamin A1 - Kunz, Steffen A1 - Konnegen, Marcel A1 - Müller, Sebastian A1 - Günther, Oliver T1 - Access control for semantic data federations in industrial product-lifecycle management JF - Computers in industry : an international, application oriented research journal N2 - Information integration across company borders becomes increasingly important for the success of product lifecycle management in industry and complex supply chains. Semantic technologies are about to play a crucial role in this integrative process. However, cross-company data exchange requires mechanisms to enable fine-grained access control definition and enforcement, preventing unauthorized leakage of confidential data across company borders. Currently available semantic repositories are not sufficiently equipped to satisfy this important requirement. This paper presents an infrastructure for controlled sharing of semantic data between cooperating business partners. First, we motivate the need for access control in semantic data federations by a case study in the industrial service sector. Furthermore, we present an architecture for controlling access to semantic repositories that is based on our newly developed SemForce security service. Finally, we show the practical feasibility of this architecture by an implementation and several performance experiments. KW - Access control KW - Data federation KW - Information integration KW - Product lifecycle management KW - Semantic data Y1 - 2012 U6 - https://doi.org/10.1016/j.compind.2012.08.015 SN - 0166-3615 VL - 63 IS - 9 SP - 930 EP - 940 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Winkler, Till J. A1 - Goebel, Christoph A1 - Bidault, Francis A1 - Günther, Oliver T1 - Information technology and business practieses in Germany BT - results from the 2011 bit survey JF - The UCLA Anderson Business and Information Technologies (BIT) Project Y1 - 2012 U6 - https://doi.org/10.1142/9789814390880_0005 SP - 81 EP - 114 PB - world scientific CY - Singapore ER - TY - JOUR A1 - Günther, Oliver A1 - Brecht, Franziska A1 - Eckhardt, Andreas A1 - Berger, Christian T1 - Corporate career presences on social network sites: an analysis of hedonic and utilitarian value JF - CHI '12 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems N2 - Due to the shortage of skilled workforce and the increasing usage of social network sites, companies increasingly apply social network sites to attract potential applicants. This paper explores how corporate career presences on network sites should be realized in order to attract potential applicants. Therefore, we tested the impact of seven individual characteristics (namely Appointments, Daily Working Routine, Jobs, Corporate News, Entertainment, Media Format, and Features) of these corporate career presences that we extracted by a comprehensive pre-study on users' perceived hedonic and utilitarian value of these presences on social network sites. Based on an online survey with 470 participants, the results reveal a highly significant impact of five characteristics that corporate career presences provide both a hedonic as well as a utilitarian value to the user Y1 - 2012 SN - 978-1-4503-1015-4 U6 - https://doi.org/10.1145/2207676.2208408 SP - 2441 EP - 2450 PB - ACM CY - Texas ER - TY - JOUR A1 - Günther, Oliver T1 - Big Data: What is it? And what does it mean for science, economy and society? JF - Informatik-Spektrum Y1 - 2014 UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-84897396415&partnerID=MN8TOARS U6 - https://doi.org/10.1007/s00287-014-0783-7 SN - 0170-6012 VL - 37 IS - 2 SP - 85 EP - 86 PB - Springer Verlag CY - Heidelberg ER - TY - JOUR A1 - Günther, Oliver T1 - Die Vorstandsperspektive JF - Informatik-Spektrum Y1 - 2013 U6 - https://doi.org/10.1007/s00287-013-0743-7 SN - 0170-6012 VL - 36 IS - 6 SP - 505 EP - 507 PB - Springer CY - Heidelberg ER - TY - GEN A1 - Günther, Oliver T1 - Grußwort des Präsidenten der Universität Potsdam T2 - Deutsch-Ungarisches Symposium 2018 Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-409910 SN - 978-3-86956-428-9 SP - 13 EP - 16 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - JOUR A1 - Krasnova, Hanna A1 - Veltri, Natasha F. A1 - Günther, Oliver T1 - Self-disclosure and privacy calculus on social networking sites the role of culture intercultural dynamics of privacy calculus JF - Business & information systems engineering : the international journal of Wirtschaftsinformatik N2 - Social Network Sites (SNSs) rely exclusively on user-generated content to offer engaging and rewarding experience to its members. As a result, stimulating user communication and self-disclosure is vital for the sustainability of SNSs. However, considering that the SNS users are increasingly culturally diverse, motivating this audience to self-disclose requires understanding of their cultural intricacies. Yet existing research offers only limited insights into the role of culture behind the motivation of SNS users to self-disclose. Building on the privacy calculus framework, this study explores the role of two cultural dimensions - individualism and uncertainty avoidance - in self-disclosure decisions of SNS users. Survey responses of US and German Facebook members are used as the basis for our analysis. Structural equation modeling and multi-group analysis results reveal the distinct role of culture in the cognitive patterns of SNS users. The authors find that trusting beliefs play a key role in the self-disclosure decisions of users from individualistic cultures. At the same time, uncertainty avoidance determines the impact of privacy concerns. This paper contributes to the theory by rejecting the universal nature of privacy calculus processes. The findings provide for an array of managerial implications for SNS providers as they strive to encourage content creation and sharing by their heterogeneous members. KW - Social networking sites KW - Self-disclosure KW - Privacy KW - Trust KW - Culture Y1 - 2012 U6 - https://doi.org/10.1007/s12599-012-0216-6 SN - 1867-0202 VL - 4 IS - 3 SP - 127 EP - 135 PB - Springer CY - Heidelberg ER - TY - GEN A1 - Günther, Oliver ED - Gunnarsson, Logi ED - Zimmermann, Andreas T1 - Grußwort des Präsidenten der Universität Potsdam T2 - 20 Jahre MenschenRechtsZentrum Y1 - 2015 SP - 9 EP - 11 PB - BWV Berliner Wissenschafts-Verlag CY - Berlin ER - TY - CHAP A1 - Günther, Oliver T1 - Zum Geleit T2 - Raum und Zahl im Fokus der Wissenschaften : eine multidisziplinäre Vorlesungsreihe Y1 - 2015 SN - 978-3-86464-082-7 SP - 7 EP - 8 PB - Trafo CY - Berlin ER -