1984-88 Member, Board of the Canadian Mathematics Society
1985-88 Member, Research Committee of the CMS
1987-88 Chair, Constitution Revision Committee of the CMS
1988-91 Member, NSERC Mathematics Grant Selection Committee
1989-91 Chairman, NSERC Mathematics Grant Selection Committee
1989-93 Member, Steering Committee Centre for Mathematical Research, Montreal
1991 Member, Committee on the Presidential Appointment, Dalhousie
1991-93 Appraisals Committee, Ontario Council on Graduate Studies
1992-96 Member, NSERC Committee on Collaborative Research Initiatives
1992-96 MAA Panel of Visiting Lecturers
1992- Member, Simon Fraser Centre for System Science
1993- Member, Simon Fraser University Research Council
1993-2002/06 Director, Simon Fraser Centre for Experimental and Constructive Mathematics
1994-98 British Columbia Rhodes Scholarship Selection Committee
1995-98 Member, CMS Electronic Services Committee
1995-99 Member, CMS Board
1995-97 Chair, CMS Electronic Services Committee
1995 Member, NSF Scientific Computing Research Environments for the Mathematical Sciences (SCREMS) Panel, April
1995-97 Member, Mathematics Liaison Committee with NSERC
1995-96 Co-chair Executive of the Pacific Institute for the Mathematical Sciences
1996-99 Steering Committee, Simon Fraser Centre for System Science
1996 Simon Fraser member SCBC/BCHRF Health Technology Assessment competition
1996-97 HPCnet (High Performance Computing) Executive Committee
1996-99 Academy of Science, Simon Fraser Representative, Royal Society of Canada
1997, 1998 Canadian Representative, NATO Advisory Panel on Collaborative Research Grants
1997- Member, Scientific Committee, FONDAP in Applied Mathematics (FMA), CONICYT (Chilean Science Foundation)
1997-2003 Member Advisory Board for the Canada Institute for Scientific and Technical Information (CISTI) of the National Research Council of Canada
1997-98 CMS Representative to Virtuoso, Industry Canada's Virtual Centre for On-line Scholarly Publishing
1997- Canadian Computational Initiative (c3.ca) Executive Committee (1997-98); National Board (1998-2005).
1998-2000 Member, Royal Society of Canada's Public Awareness of Science Committee.
1998 Chair, NATO Advisory Panel on Collaborative Research Grants
1998- Selection Committee of the Royal Society for the McNeil Medal for the Public Awareness of Science.
1998-99 Dean of Science Search Committee, Simon Fraser University.
1998-02 Member, International Mathematical Union (IMU) Executive's Committee on Electronic Information and Communication (CEIC); Deputy chair 2000-02.
1999, 2000 Member, NATO Physical Science & Engineering and Technology Panel
1999-00 President Elect Canadian Mathematical Society and CMS representative to AMS Council
1999-00 Presidential Search Committee, Simon Fraser University
April-May 2000 Member, Review Panel, Mathematics and Statistics Department, University of Western Australia.
2000-02 President Canadian Mathematical Society; CMS representative to AMS Council and Fields Institute Board
2000-02 Member College of Reviewers, Canada Research Chairs (CRC) Program
2000- Founding Member, SFU Institute for Health Research and Education (IHRE)
2001-03 Chair, Advisory Board for the Canada Institute for Scientific and Technical Information (CISTI) of the National Research Council of Canada
2002-03 Past President Canadian Mathematical Society
2002-06 Chair, International Mathematical Union (IMU) Executive's Committee on Electronic Information and Communication (CEIC)
2003 Member, C3.ca Association Inc Long Range Plan Advisory Committee
2000-05 Member, WestGrid Executive Committee, Chair 2003-04.
2003-04 Dean of Science Search Committee, Simon Fraser University.
2004-07 Chair, CMS International Affairs Committee
2004-07 Mathematical Association of America Board of Governors, Governor at Large representing Canadians.
2004-07 Member, Killam Selection Committee
2004-07 Associate Publisher, Books and New Media, Canadian Mathematical Society