- 1991 - 1993 The University of Tokushima
- 1991 - 1993 Tokushima University, Professor
- 1993 - - 徳島大学総合科学部 教授
- 1993 - - Tokushima University, Professor
- 1981 - 1991 The University of Tokushima
- 1981 - 1991 Tokushima University, Assistant Professor
- 1979 - 1981 The University of Tokushima
- 1979 - 1981 Tokushima University, Lecturer
- 1978 - 1979 The University of Tokushima
- 1978 - 1979 Tokushima University, Research Assistant
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