- 1984 - 1998 Hokkai-Gakuen University
- 1984 - 1998 Hokkai-Gakuen University, Assistant Professor
- 1998 - - 北海学園大学 教授
- 1998 - - Hokkai-Gakuen University, Professor
- 1981 - 1984 Hokkai-Gakuen University
- 1981 - 1984 Hokkai-Gakuen University, Lecturer
- 1978 - 1981 National Institute of Technology, Kushiro College
- 1978 - 1981 Kushiro National College of Technology, Lecturer
- 1977 - 1978 National Institute of Technology, Kushiro College
- 1977 - 1978 Kushiro National College of Technology, Research Assistant
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