2014 - 2015 | Professor, Shanghai University, China |
2007-2012 | Visiting Professor, Open University, Milton Keynes, Great Britain |
1978 - 2013 | Professor, Faculty of Social Sciences, University of Kassel, Germany |
2004 | Visiting Professor, Research Institute for Higher Education, Hiroshima University, Japan |
1994 - 1995 | Dean, Department of Applical Social Sciences and Law, Comprehensive University of Kassel, Germany
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1978 - 2004 | Director (for 14 years), Centre for Research on Higher Education and Work, University of Kassel, Germany |
1994 - 1996 | Professor (part-time), College of Europe, Brugge, Belgium |
1986 - 1992 | Professor (part-time), School of Education and Social Policy, Northwestern University, Evanston, Illinois, U.S. |
1992 - 1993 | Fellow of the Special Exchange Programme between Japan and Europe, provided by the Japanese Foreign Ministry, at Nagoya University, Japan |
1985 - 1986 | Fellow, Netherlands Institute for Advanced Study in the Humanities and Social Sciences, Wassenaar, Netherlands |
1982 - 1983 | Visiting Professor, University of Educational Sciences, Klagenfurt, Austria |
1980 - 1982 | Vice-president, Comprehensive University at Kassel, Germany |
1968 - 1978 | Research Fellow, Max-Planck-Institute for Educational Research, Berlin, Germany |
1973 - 1977 | Lecturer (part-time), Institute for East Asian Studies, Free University of Berlin, Germany |
1970 - 1972 | Fellow, Japan Society for the Promotion of Science; Guest Researcher, National Institute for Educational Research, Tokyo, Japan |
1968 - 1970 | Lecturer (part-time), Department of Sociology, Free University of Berlin, Germany |
1964 - 1968 | Independent Research Fellow (part-time), Max-Planck-Institute for Educational Research, Berlin, Germany |