2012 Conference Co-Chair, 51st Annual Meeting of the Western Regional Science Association, Poipu, Kauai, Hawaii, February 8-11, 2012.
2011 Advisor to the Vice President for Research, George Washington University, Washington, DC.
2010 – present Member of the Board, International Society for Ecological Economics.
2009 Co-organizer, Joint General Services Administration (GSA), HOK and University of Maryland Center for Integrative Environmental Research (CIER) Workshop on Sustainable Development in the Federal Portfolio of Programs and Actions, Department of the Interior, Washington, DC, March 6, 2009
2007 – 2009 Project Associate, Urbanization and Global Environmental Change, IHDP Core Project, Arizona State University, Tempe, Arizona.
2007 – 2008 Member, Steering Committee, Conference on the Human Dimensions of Global Environmental Change and International Conference of the Social-Ecological Research Programme, ‘Long-Term Policies: Governing Social-Ecological Change’, February 2008, Berlin.
2007 – 2008 Member, International Scientific Advisory Committee, Sustainable City Conference 2008, Skiathos, Greece.
2005 – 2008 Member, Science Advisory Committee of the Marine Management Area Science project, funded by the Moore Foundation, based at Conservation International, Washington, D.C.
2005 – present Member of the Board, Western Regional Science Association.
2005 – present Council Member, International Society for Industrial Ecology.
2005 – 2006 Member, International Scientific Advisory Committee, Sustainable City Conference, July 2006, Tallin, Estonia.
2004 – 2005 Co-Chair, Annual Conference of the International Society for Industrial Ecology, Stockholm, Sweden.
2003 – 2006 US Society for Ecological Economics, Policy Committee.
2003 – 2004 Member, Conference Committee, International Society for Industrial Ecology.
2001 – 2004 Internationalization Taskforce, School of Public Affairs, University of Maryland.
2001 Co-organizer of the workshop on Mauritius Environmental Rource Management and Industrial Development (MERMAID), University of Mauritius and Mauritius Research Council, Reduit, Mauritius, June 25 – 29, 2001.
2001 US-China Productivity Center, Ministry of Science and Technology of China and University of Maryland, Integration Design Team Member.
2000 – 2001 Scientific Leadership Network, Ecosystem Dynamics and Essential Human Needs (EDHN), American Association for the Advancement of Science, Washington, D.C.
2000 Review of tenure case for the Department of Civil and Environmental Engineering, Lafayette College, Easton, Pennsylvania.
2000 – 2003 Member of the International Steering Committee, Workshop to Design an Integrated Regional Model of the Human-Ecosystem-Climate System in Southern Africa: Interactions at River Basin, National, and Regional Levels, Maputo, Mozambique.
2000 Co-organizer of the workshop on “Climate’s Long-term Impacts on Metro Boston”, Fletcher School of Law and Diplomacy, Tufts University, Medford, Massachusetts, March 2000.
1999 – 2000 Member of the Scientific Advisory Committee for the Systems Science 2000 Conference, University of Osnabrück, Osnabrück, Germany.
1996 –1998 Member of the Publications Committee of the International Society of Ecological Economics.
1996 Host and co-organizer of the international workshop on Dynamic Modeling, Boston, MA, August 1996.
1995 – 1996 Co-organizer, Fourth Biennial Conference of the International Society for Ecological Economics.