2020 June	President, Society for Risk Analysis, Japan
2019 May	Director (Treasurer), International Association for Impact Assessment
2017-2019	Director, Society of Environmental Science
2016 May	Co-chair, the 36th annual meeting of International Association for Impact Assessment (IAIA16 Nagoya), Secretary-General of Japan Committee for IAIA16
2015 May-	Director, Center of Environmental Information Science, Japan
2015 Jan-	Secretary-General, Japan Branch of International Association for Impact Assessment
2014 Apr-	International Advisory Board, Journal of Korean Society of Environmental Impact Assessment
2012 May-	Vice president, Japan Society for Impact Assessment
2010 Jun-	Director and Secretary-general, Society for Risk Analysis, Japan
2009 Apr-	Member of editorial and award committees, Society for Risk Analysis, Japan
2008 Apr-	International Advisory Board of a Journal, Environmental Impact Assessment Review (Elsevier)
2006-	Director, Japan Association for Risk Management System Studies
2002 to 2012	Editor-in-Chief, Japan Society for Impact Assessment
2001-	Member, Committee for Research on Environmental Disruptions
2000-	Director, Japan Association for Planning Administration
1999 Apr-	Member of Editorial Committee, Japan Society for Environmental Science
1998～2002	Editorial Advisory Board of an International Journal, Risk: Health, Safety and Environment (Official Journal of Risk Assessment and Policy Association)
1995 Apr-	Member of Editorial Committee, Japan Association for Planning Administration
1993 to 1995	Member of Public relations committee, Japan Society for Environmental Science
1991 to 1997	Secretary of Editorial committee, Japan Association for Planning Administration