- 2011/04 - 現在 Sapporo Gakuin University
- 1984 - 2011 Sapporo Gakuin University
- 1980 - 1984 札幌商科大学 教授
- 1980 - 1984 Sapporo College of Commerce, Professor
- 1984 - - Sapporo Gakuin University, Professor (name changed)
- 1975 - 1980 札幌商科大学 助教授
- 1975 - 1980 Sapporo College of Commerce, Assistant Professor
- 1970 - 1975 札幌商科大学 専任講師
- 1970 - 1975 Sapporo College of Commerce, Instructor
- 1968 - 1970 札幌商科大学 助手
- 1968 - 1970 Sapporo College of Commerce, Research Assistant
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