- 2010/04/01 - 現在 Niigata University Graduate School of Science and Technology Electrical and Information Engineering Professor
- 2005/07/11 - 現在 Nanjing University of Information Science and Technology Visiting Professor
- 2002/06/24 - 現在 Chongqing University of Posts and Telecommunications Visiting Professor
- 1997/05/01 - 現在 Niigata University Faculty of Engineering Professor
- 1998/06/23 - 1998/06/30 通産省工業技術院中国工業技術研究所 流動研究員
- 1988/04/01 - 1997/04/30 Niigata University Faculty of Engineering Associate Professor (as old post name)
- 1979/04/01 - 1988/04/30 Niigata University Faculty of Engineering Assistant
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