|| Program Committee Memberships
International Conference on Knowledge Management (ICKM 2009), Hong Kong, China, December 3-4, 2009.
European Semantic Web Conference (ESWC) 2009, Workshop on “SemWiki – The Wiki Way of Semantics”, “Scripting for the Semantic Web”, 2009.
K-CAP 2009 – “The Fifth International Conference on Knowledge Capture” is sponsored by ACM SIGART and held in cooperation with AAAI, Redondo Beach, California, 2009.
ACM Hypertext 2009 “Linking people, resources and annotations”, 2009.
Mensch & Computer 2009, Workshop on “Enterprise 2.0 – Web 2.0 im Unternehmen” (Enterprise 2.0 – Web 2.0 in companies), Berlin, 2009.
Conference on Professional Knowledge Management, Workshop on “Corporate Web 2.0: Knowledge networks and social software in companies”, “Knowledge Services & Mashups”, 2009.
Professional Aspects of Knowledge Management (PAKM) 2009, Workshop on “Knowledge Networks: Discovering network structure and patterns using Social Network Analysis”, 2009.
TRIPLE-I ‘08, International Workshop on “Knowledge Acquisition from the Social Web”, Special Track on “Knowledge Services”, 2008.
European Semantic Web Conference (ESWC) 2008, Workshop on “Scripting for the Semantic Web”,
“SemWiki – The Wiki Way of Semantics”, 2008.
European Semantic Web Conference (ESWC) 2007, Workshop on “Bridging the Gap between Semantic Web and Web 2.0”, “Scripting for the Semantic Web”, 2007.
|| Organization / Chairing of Workshops
Co-Chair, Conference on “Social Semantic Web (CSSW)“, SABRE – Software, Agents and Services for Business, Research, and E-Sciences 2007, Leipzig, Germany, 2007.
Co-Chair, Workshop on “Collaborative Knowledge Management“, 4th Conference Professional Knowledge Management, 2007, Potsdam, Germany, 2007.
Member of Organizing Committee, 4th Conference Professional Knowledge Management, 2007, Potsdam, Germany, 2007.
Co-Chair, Workshop on “Applying Social Software for Knowledge Management“, 2nd International Symposium in Media Informatics – “Cow Paths: Agency in Social Software”, Aachen, Germany, 2006.
Chair, Workshop on “Formation of Social Networks in Social Software Applications“, INFORMATIK 2006, Dresden, Germany, 2006.
Co-Chair, Workshop on “Modeling and Analysis of Knowledge Intensive Business Processes“, 3rd Conference Professional Knowledge Management, 2005, Kaiserlautern, Germany, 2005.
|| Reviews for Conferences
AMCIS – American Conference on Information Systems, 2007/08.
ECIS – European Conference on Information Systems, 2007/08/09.
HICSS – Hawaii International Conference on System Sciences, 2007/08/09.
ICIS – International Conference on Information Systems, 2007.
|| Reviews for Publishers
Journal of Technical Communication, 2009
Springer, Textbook: Social Semantic Web, 2008.
Special Issue on “Social Networking through ICTS” Journal of Information Technology, 2009.
|| Editorship
Editorial Board Member, Journal of Emerging Technologies in Web Intelligence (JETWI), since 2009.
|| Miscellaneous
Member of IFIP Working Group 13.7: HCI and Visualisation