- 2002/04/01 - 現在 Kokushikan University School of Asia 21, Department of Asia 21
- 2001/04/01 - 2002/03/31 Kokushikan University Center for Information Science
- 1999/04 - 2001/03 Niigata University of International and Information Studies Professor
- 1997/04 - 1999/03 Sirius Corporation
- 1969/06 - 1997/03 Nippon Steel Corporation
- Kokushikan University School of Asia 21, Department of Asia 21
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