- 2006/04 - 現在 Rikkyo University Department of Culture and Tourism Studies, College of Tourism
- 2006/04 - 現在 Professor,Department of Culture and Tourism Studies,College of Tourism,RIKKYO UNIVERSITY
- 1998/04 - 2006/03 Rikkyo University Department of Tourism, College of Tourism
- 1998/04 - 2006/03 Professor,Department of Tourism and Hospitality Management,College of Tourism,RIKKYO UNIVERSITY
- 1996/10 - 1998/03 Rikkyo University College of Social Relations
- 1996/10 - 1998/03 Professor,Department of Culture and Tourism Studies,College of Sociology,RIKKYO UNIVERSITY
- 1995/06 - 1996/09 大阪大学留学生センター 教授
- 1995/06 - 1996/09 Professor
- 1992/04 - 1995/05 Osaka University Faculty of Language and Culture
- 1992/04 - 1995/05 Professor
- 1991/01 - 1992/03 日本語教育研究所 代表
- 1984/01 - 1991/12 国立国語研究所日本語教育センター日本語教育研修室 室長
- 1984/01 - 1991/12 Head
- 1976/10 - 1983/12 国立国語研究所日本語教育センター日本語教育研修室 研究員
- 1976/10 - 1983/12 Researcher
- Rikkyo University College of Tourism, Department of Culture and Tourism Studies Professor
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