- 2011/09 - 現在 Yamagata University Manager
- 2003/04 - 現在 Yamagata University Abolition organization Department of Mechanical Systems Engineering Professor
- 2003/04 - 現在 Yamagata University Department of Mechanical Systems Engineering Professor
- 2014/04 - 2017/03 Yamagata University Director in General
- 2011/09 - 2013/03 Yamagata University Director in General
- 2010/04 - 2011/08 Yamagata University Others
- 2007/09 - 2010/03 Yamagata University Others
- 2004/04 - 2007/08 Yamagata University Others
- 1994/10 - 2003/03 Yamagata University Abolition organization Department of Mechanical Systems Engineering Associate Professor (as old post name)
- 1994/10 - 2003/03 Yamagata University Faculty of Engineering Department of Mechanical Systems Engineering Associate Professor (as old post name)
- 1995/08 - 1996/08 Chalmers University of Technology Researcher
- 1992/04 - 1994/09 Yamagata University Abolition organization Department of Mechanical Systems Engineering Research Assistant
- 1992/04 - 1994/09 Yamagata University Faculty of Engineering Department of Mechanical Systems Engineering Research Assistant
- 1980/04 - 1992/03 Akita University
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