Associate Editor ("Manufacturing, Operations and Scheduling"), Operations Research 1988 - 1994.
Associate Editor, Operations Research Letters 1989 - 1993.
Regular Referee for above journals, as well as Management Science, Naval Research Logistics, European Journal of Operational Research, International Journal of Production Economics and occasional referee for several other journals.
Member of Organizing Committee, 2009 ORSIS.
Member of Program Organizing Committee, 2010 MSOM conference.
Member of Program Committee, 1996 MSOM Conference.
Member of Program Committee, 1996 Multi-Echelon Inventory Systems Conference.
Organized the 1990 Multi-Echelon Inventory Systems Conference at the University of Waterloo.