- 2018/10 - 現在 Hiroshima University
- 2018/07 - 現在 Hiroshima University
- 2013/04 - 2017/03 国立国会図書館 調査及び立法考査局 専門調査員
- - 2013/03 University of Tsukuba Faculty of Business Sciences Professor
- 2005/09 - - 筑波大学大学院ビジネス科学研究科 教授(大学研究センター)
- 2005 - - Professor, Research Center for University Studies, Graduate school of Business Sciences, University of Tsukuba
- 2000 - 2004 University of Tsukuba Reseach Center for University Studies
- 2000 - 2004 Associate Professor, Research Center for University Studies, University of Tsukuba
- 2000 - 2002 科学技術庁科学技術政策研究所 総括主任研究官(併任)
- 2000 - 2002 Director of Research, National Institute of Science and Technology Policy (NISTEP), MEXT
- 1993 - 2000 The University of Electro-Communications Graduate School of Information Systems
- 1993 - 2000 Associate Professor, Graduate School of Information Systems, University of Electro-Communications
- 1991 - 1993 Bunkyo University Faculty of International Studies
- 1991 - 1993 Lecturer, School of International Studies, Bunkyo University
- 1986 - 1991 Tokyo Institute of Technology School of Engineering
- 1986 - 1991 Assistant Professor, Department of Social Engineering, Tokyo Institute of Technology
- 1986 - University of Tsukuba Institute of Philosophy
- 1986 - Research Associate, Institute of Philosophy, University of Tsukuba