- 1993 - 1996 Hiroshima Shudo University
- 1993 - 1996 Hiroshima Shudo University, Professor
- 1989 - 1993 University of East Asia
- 1989 - 1993 University of East Asia, Assistant Professor
- 1983 - 1989 University of East Asia
- 1983 - 1989 University of East Asia, lecturer
- 1982 - 1983 Hiroshima University
- 1982 - 1983 Hiroshima University, Research Assistant
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