- 2001 - 2001 Tohoku University Graduate School of International Cultural Studies
- 1997 - 2001 東北大学言語文化部 教授
- 1993 - 1997 東北大学言語文化部 助教授
- 1989 - 1993 東北大学教養部 助教授
- 1984 - 1989 Kagoshima University
- 1978 - 1984 Kagoshima University
- 1977 - 1978 Kagoshima University
- Tohoku University Graduate School of International Cultural Studies, Department of Language Studies Professor
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