Associate Editor, Queueing Systems: Theory and Applications (QUESTA), 1994-2008
Associate Editor, Management Science, 1997-2008
Senior Associate Editor, Manufacturing and Service Operations Management (M&SOM), 2003-2006
Associate Editor, Mathematics of Operations Research (MOR), 1990-1999
INFORMS Lanchester Prize Committee, 2006-2008
APS (Applied Probability Society) Awards Committee, 2006-2008 (Chair, 2007)
International Advisory Committee: The 2005 IEEE International Conference on Service Operations, Logistics and Informatics, Beijing, August 2005
Program Committee: 13th INFORMS Applied Probability Conference, Ottawa, July 2005
Organizing Committee: Call Center Workshop, CRM (Center for Mathematical Research), Montreal, July 2004
Program Committee: 12th INFORMS Applied Probability Conference, Beijing, June 2003
Yosef Levy ORSIS Prize Committee, 2003
Program Committee: The 14th International Symposium on Transportation and Traffic Theory, Jerusalem, 1998
Program Committee: The Eleventh International Conference of the Israel Society for Quality, Jerusalem, November 1996
Session Organization: Stochastic Networks, 3rd World Congress of the Bernoulli Society and 57th Annual Meeting of the IMS, June 1994
Program Committee: INRIA/ORSA/TIMS/SMAI Conference on Applied Probability, Paris, June 1993
Session Organization: Bandit Processes, INRIA/ORSA/TIMS/SMAI Conference on Applied Probability, Paris, June 1993
Session Organization: Hierarchical Modelling of Queueing Networks, ORSA/TIMS Conference, Philadelphia, October 1990
On organization, advisory and prize committees of various conferences
Reviewer for the Annals Prob., Annals Stat., Math. OR, Mgt. Science, SIAM J. on Control and Optimization, J. of Multivariate Anal., JASA, NSF (Probability, Statistics, Operations Research and Production Systems), and more
