Institute for Advanced Management Systems Research. Åbo Akademi University, Turku Finland, 2007-2012, Privat Dozent, 2011-2015 Finnish Distinguished Professor.
Institute for Advanced Management Systems Research. Åbo Akademi University, Turku Finland, 2007-2012.
Information and Communication Technology, Faculty of Technology, Policy and Management, Delft University of Technology, 1998- , Associate Professor, and 2000-2002, 2004, and 2007 – 2009, Interim section leader.
Department of Industrial Engineering and Management Studies, Northwestern University; Evanston, Ill., 2009, Visiting Professor.
Information Studies, Syracuse University, 2004-2005, Visiting Professor
TNO-Strategy, Technology and Policy, Netherlands Organization of Applied Scientific Research (TNO), 1996-1998, Senior advisor and researcher
Mass Communication and Communication Management, University Utrecht, 1996-1999, Associate Professor
Department of Telecommunication, Michigan State University, East Lansing, 1996, Visiting Professor
Tele Denmark Research, Copenhagen, Research Fellow, December 1994
Department Communication Science, University Amsterdam: 1985 - 1996, Assistant Professor
Institute for Labor Research, Catholic University Brabant: 1984, researcher
Institute for Mass Communication, Catholic University Nijmegen: 1979 -1983, researcher
Department of Home Affairs, Directorate General Human Resource-policy: 1979, researcher
Free University Amsterdam: 1975, research assistant