- 2007/04 - 現在 Gakushuin University Faculty of Science
- 2007/04 - 現在 Faculty of Science, Gakushuin University Professor
- 1995/04 - 2007/03 Faculty of Science, Gakushuin University Associate Professor
- 1995/04 - 2007/03 Gakushuin University Faculty of Science
- 1993/04 - 1995/03 Faculty of Science, Nagoya University Lecturer
- 1993/04 - 1995/03 Nagoya University School of Science
- 1988/04 - 1993/03 College of General Education, Nagoya University Lecturer
- 1988/04 - 1988/10 JSPS's Research Fellow, Waseda University.
- 1988/04 - 1988/08 日本学術振興会特別研究員(早稲田大学)
- 1985/04 - 1988/03 Faculty of Science, Gakushuin University Research Associate
- 1985/04 - 1988/03 Gakushuin University Faculty of Science
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