- 2017/04/01 - 現在 Yokohama National University Faculty of Urban Innovation Professor
- 2011/04 - 現在 Tohoku University
- 2011/04 - 2017/03 Otsuma Women's University Faculty of Social Information Studies Professor
- 2000/04 - 2011/03 Tohoku University Faculty of Arts and Letters Professor
- 2010/10 - 2011/01 Universitas Udayana (UNUD) Visiting Professor
- 2009/03 - 2009/04 University of Indonesia, Visiting Professor
- 1993 - 2001 Tohoku University The Faculty of Arts and Letters
- 2001 - - 東北大学大学院文学研究科 教授
- 1993/04 - 2000/03 Tohoku University Graduate School of Arts and Letters Professor
- 1996/03 - 1996/06 University of Indonesia, Visiting Professor
- 1991/04 - 1993/03 Tohoku University Graduate School of Education Professor
- 1991 - 1993 東北大学教養部 教授
- 1987/04 - 1991/03 Kanagawa University Faculty of Foreign Languages Professor
- 1980/04 - 1991/03 Ritsumeikan University College of Social Sciences,Associate Professor Associate Professor (as old post name)
- 1987 - 1991 Kanagawa University Faculty of Foreign Languages
- 1980 - 1987 Ritsumeikan University College of Social Sciences
- Yokohama National University
- Otsuma Women's University School of Social Information Studies, Department of Social Information Studies Professor
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