- 1997 - 2001 Hiroshima University
- 1997 - 2001 Hiroshima University, Professor
- 2001 - - 広島大学大学院 教授
- 2001 - - Hiroshima University, Guraduate School Professor
- 1991 - 1997 Hiroshima University
- 1991 - 1997 Hiroshima University, Assistant Professor
- 1981 - 1991 Hiroshima University
- 1981 - 1991 Hiroshima University, Lecturer
- 1975 - 1981 Hiroshima University
- 1975 - 1981 Hiroshima University, Research Assistant
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