Professional activities (selected)

• 2013 - present
  Initiator and Member of the Board of the Foundation 'Samen Energie Neutraal (Together Energy Neutral)'
  
  
• 2001 - present
  Member of the European Academy of Sociology
  
  
• 1999 - present
  Editorial Board member of Rationality and Society
  
  
• 1995 - present
  Founder and Scientific Director of DECIDE bv (DECision Insights and Developments in Europe)
  
  
• 2011 - 2017
  Initiator and Chaiman of the Board of the Energy Cooperative Association Grunneger Power
  
  
• 2007 - 2017
  Member of the Advisory Committee on 'Employer and Society' of the employers organization VNO-NCW Noord
  
  
• 2002 - 2017
  Member of the Board of Research Institute and Graduate School SOM (Economy and Business School, University of Groningen)
  
  
• 1992 - 2016
  Member of the Scientific Board of the Dutch Documentation Center for Political Parties, Groningen
  
  
• 1992 - 2015
  Editorial Board member of Journal of Mathematical Sociology
  
  
• 2008 - 2014
  Member of Urgenda Platform
  
  
• 2005 - 2007
  Member of the Programmatic Steering Board of the Hague Institute for the Internationalisation of Law (HIIL)
  
  
• 1999 - 2007
  Board Member of the Foundation for the Digital Monument for the Jewish Community
  
  
• 1999 - 2007
  Coordinator of the European Group on ìExplaining EU Decision Makingî, University of Groningen, Leyden, Nijmegen, Konstanz, Helsinki, Ann Arbor
  
  
• 1995 - 2007
  Member of the Board of Directors of the International Network for Social Network Analysis (INSNA)
  
  
• 1994 - 2007
  Editorial Board member of Journal of Computational and Mathematical Organization Theory
  
  
• 2002 - 2005
  Member of the Council of the Rationality and Society Section of ASA
  
  
• 1993 - 2002
  Scientific Director of the Groningen, Utrecht, Nijmegen Graduate and Research School "The Interuniversity Center for Social Science Theory and Methodology (ICS)"
  
  
• 1992 - 1997
  Member of the Scientific Board of "Der Mannheimer Zentrum f¸r Europ‰ische Sozialforschung"
  
  
• 1990 - 1996
  Member of the Supervising Board of GESIS, the German "Gesellschaft Sozial-wissenschaftlicher Infrastruktur-einrichtungen" (the coordinating organization of the Zentralarchiv Cologne, ZUMA Mannheim, and InformationsZentrum Sozialwissenschaften Bonn)
  
  
• 1986 - 1993
  Member of the ICS Board