- 2016/04 - 現在 Nihon-University, Callege of Risk Management professor
- 2007/04 - 現在 Nihon University, graduate school of Journalism professor
- 2010/04 - 2016/03 Nihon University, Callege of Law professor
- 2003/04 - 2012/03 Meiji University, lecturer
- 2008/04 - 2010/04 Visiting Scholar, SIWPS (Arnold Saltzman Institute of War and Peace Studies), Columbia University
- 2006/04 - 2008/03 Sophia University, lecturer
- 2005/04 - 2007/03 Toyo University, lecturer
- 2004/04/01 - 2006/03/31 Keio University, lecturer
- 2004/04 - 2006/03 Keio University, lecturer
- 2002/10 - 2005/03 Nihon University, College of Law, lecturer
- 1999/04 - 2002/09 Tokiwa University, lecturer
- 1996/04/01 - 1999/03/31 日本学術振興会特別研究員(東京大学社会情報研究所)
- 1996/04 - 1999/03 日本学術振興会特別研究員(東京大学社会情報研究所)
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Japanese Political Science Association
, Japan Society for Disaster Information Studies
, The Association for the Study of Security Science
, 社会情報学会
, The Japanese Society of Social Psychology
, 情報通信学会
, The Japan Society for Studies in Journalism and Mass Communication