- 1993 - 2001 Koshien University
- 1993 - 2001 Koshien University, Assistant Professor
- 2001 - - 甲子園大学教授
- 2001 - - Koshien University, Professor
- 1987 - 1993 Koshien University
- 1987 - 1993 Koshien University, Lecturer
- 1985 - 1987 京都大学 助手
- 1985 - 1987 Kyoto University, Research Assistant
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