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Volume 60 • Number 4 • July–August 2012<br />
OPERATIONS RESEARCH<br />
Volume 60<br />
•<br />
Number 4<br />
OPERATIONS RESEARCH<br />
July<br />
•<br />
August<br />
•<br />
2012<br />
Conditional Value-at-Risk and Average Value-at-Risk: Estimation and Asymptotics<br />
So Yeon Chun, Alexander Shapiro, Stan Uryasev<br />
A Broader View of Designing the Liver Allocation System<br />
Mustafa Akan, Oguzhan Alagoz, Baris Ata, Fatih Safa Erenay, Adnan Said<br />
Bullwhip Effect Measurement and Its Implications<br />
Li Chen, Hau L. Lee<br />
Ordering Policies <strong>for</strong> Periodic-Review Inventory Systems with Quantity-Dependent Fixed Costs<br />
Ozgun Caliskan-Demirag, Youhua (Frank) Chen, Yi Yang<br />
Technical Note—On Optimal Policies <strong>for</strong> Inventory Systems with Batch Ordering<br />
Woonghee Tim Huh, Ganesh Janakiraman<br />
Strategies <strong>for</strong> a Centralized Single Product Multiclass M/G/1 Make-to-Stock Queue<br />
Hossein Abouee-Mehrizi, Barı¸s Balcıo˘glu, Opher Baron<br />
Priority Assignment in Emergency Response<br />
Evin Uzun Jacobson, Nilay Tanık Argon, Serhan Ziya<br />
Learning Consumer Tastes Through Dynamic Assortments<br />
Canan Ulu, Dorothée Honhon, Aydın Alptekino˘glu<br />
Solving an Infinite Horizon Adverse Selection Model Through Finite Policy Graphs<br />
Hao Zhang<br />
Robust Assortment Optimization in Revenue Management Under the Multinomial Logit Choice Model<br />
Paat Rusmevichientong, Huseyin Topaloglu<br />
Optimal Pricing in Networks with Externalities<br />
Ozan Candogan, Kostas Bimpikis, Asuman Ozdaglar<br />
Release Time Scheduling and Hub Location <strong>for</strong> Next-Day Delivery<br />
Hande Yaman, Oya Ekin Karasan, Bahar Y. Kara<br />
A Polyhedral Study of Multiechelon Lot Sizing with Intermediate Demands<br />
Minjiao Zhang, Simge Küçükyavuz, Hande Yaman<br />
Robust and Stochastically Weighted Multiobjective Optimization Models and Re<strong>for</strong>mulations<br />
Jian Hu, Sanjay Mehrotra<br />
Three Ideas <strong>for</strong> the Quadratic Assignment Problem<br />
Matteo Fischetti, Michele Monaci, Domenico Salvagnin<br />
Dynamic Pricing Under a General Parametric Choice Model<br />
Josef Broder, Paat Rusmevichientong<br />
Hazard Rate Scaling of the Abandonment Distribution <strong>for</strong> the GI/M/n + GI Queue in Heavy Traffic<br />
Josh Reed, Tolga Tezcan<br />
Overflow Networks: Approximations and Implications to Call Center Outsourcing<br />
Itai Gurvich, Ohad Perry
EDITOR-IN-CHIEF<br />
Stefanos A. Zenios<br />
Stan<strong>for</strong>d University<br />
Graduate School of Business<br />
Stan<strong>for</strong>d, CA 94305<br />
zenios_stefanos@gsb.stan<strong>for</strong>d.edu<br />
(650) 725-9663<br />
AREA EDITORS<br />
O PERATIONS R ESEARCH<br />
MANAGING EDITOR<br />
Joan Taylor<br />
INFORMS<br />
7240 Parkway Drive<br />
Suite 300<br />
Hanover, MD 21076<br />
joan.taylor@in<strong>for</strong>ms.org<br />
(410) 449-0721<br />
PRODUCTION EDITOR<br />
Candita Gerzevitz<br />
INFORMS<br />
7240 Parkway Drive<br />
Suite 300<br />
Hanover, MD 21076<br />
candita.gerzevitz@in<strong>for</strong>ms.org<br />
(401) 826-8158<br />
METHODS<br />
CONTEXTUAL AREAS<br />
CROSSCUTTING AREAS (continued)<br />
Decision Analysis<br />
Kevin McCardle<br />
University of Cali<strong>for</strong>nia, Los Angeles<br />
Anderson School of Management<br />
Los Angeles, Cali<strong>for</strong>nia<br />
kmccardl@anderson.ucla.edu<br />
(310) 825-3926<br />
Financial Engineering<br />
Benjamin van Roy<br />
Stan<strong>for</strong>d University<br />
Management Science and Engineering<br />
Stan<strong>for</strong>d, Cali<strong>for</strong>nia<br />
bvr@stan<strong>for</strong>d.edu<br />
(650) 725-0544<br />
Environment, Energy, and Sustainability (cont’d.)<br />
Beril Toktay<br />
Georgia <strong>Institute</strong> of Technology<br />
College of Management<br />
Atlanta, Georgia<br />
beril.toktay@mgt.gatech.edu<br />
(404) 385-0104<br />
Optimization<br />
Aharon Ben-Tal<br />
Technion<br />
William Davidson Faculty of Industrial<br />
Engineering and Management<br />
Haifa 32000, Israel<br />
abental@ie.technion.ac.il<br />
+972 4 8294514<br />
R. Ravi<br />
Carnegie Mellon University<br />
School of Computer Science<br />
Pittsburgh, Pennsylvania<br />
ravi@cmu.edu<br />
(412) 269-3694<br />
Simulation<br />
Stephen Chick<br />
INSEAD<br />
Technology and <strong>Operations</strong><br />
Management Area<br />
77305 Fontainebleau Cedex, France<br />
stephen.chick@insead.edu<br />
+33 1.60.72.41.57<br />
Stochastic Models<br />
Jim Dai<br />
Georgia <strong>Institute</strong> of Technology<br />
School of Industrial and Systems Engineering<br />
Atlanta, Georgia<br />
dai@isye.gatech.edu<br />
(404) 894-9139<br />
Costis Maglaras<br />
Columbia University<br />
Graduate School of Business<br />
New York, New York<br />
c.maglaras@columbia.edu<br />
Military and Homeland Security<br />
Moshe Kress<br />
Naval Postgraduate School<br />
<strong>Operations</strong> <strong>Research</strong> Department<br />
Monterey, Cali<strong>for</strong>nia<br />
kress@nps.edu<br />
(831) 656-2927<br />
<strong>Operations</strong> and Supply Chains<br />
Dan Adelman<br />
The University of Chicago<br />
Booth School of Business<br />
Chicago, Illinois<br />
dan.adelman@chicagobooth.edu<br />
(773) 834-2019<br />
Chung Piaw Teo<br />
National University of Singapore<br />
NUS Business School<br />
Singapore 119245, Republic of Singapore<br />
bizteocp@nus.edu.sg<br />
+65 68745223<br />
Transportation<br />
Anton Kleywegt<br />
Georgia <strong>Institute</strong> of Technology<br />
School of Industrial and Systems Engineering<br />
Atlanta, Georgia<br />
anton@isye.gatech.edu<br />
(404) 894-4323<br />
CROSSCUTTING AREAS<br />
Environment, Energy, and Sustainability<br />
Eddie Anderson<br />
University of Sydney<br />
Business School<br />
NSW 2006, Australia<br />
Games, In<strong>for</strong>mation, and Networks<br />
David Gamarnik<br />
Massachusetts <strong>Institute</strong> of Technology<br />
Sloan School of Management<br />
Cambridge, Massachusetts<br />
gamarnik@mit.edu<br />
(617) 253-7779<br />
Asuman Ozdaglar<br />
Massachusetts <strong>Institute</strong> of Technology<br />
Cambridge, Massachusetts<br />
asuman@mit.edu<br />
(617) 324-0058<br />
Marketing Sciences<br />
Duncan Simester<br />
Massachusetts <strong>Institute</strong> of Technology<br />
Sloan School of Management<br />
Cambridge, Massachusetts<br />
simester@mit.edu<br />
(617) 258-0679<br />
OR Forum<br />
Ed Pinker<br />
University of Rochester<br />
Simon School of Business<br />
Rochester, New York<br />
ed.pinker@simon.rochester.edu<br />
(585) 275-2131<br />
OR Practice<br />
Andrés Weintraub<br />
University of Chile<br />
Department of Industrial Engineering<br />
Santiago, Chile<br />
aweintra@dii.uchile.cl<br />
+56 2-9784046<br />
(212) 854-4240<br />
edward.anderson@sydney.edu.au<br />
Policy Modeling and Public Sector OR<br />
+61 2 9036 7546<br />
Pinar Keskinocak<br />
Georgia <strong>Institute</strong> of Technology<br />
Atlanta, Georgia<br />
pinar@isye.gatech.edu<br />
(404) 894-2325<br />
(Editorial Board membership continued on inside back cover.)<br />
<strong>Operations</strong> <strong>Research</strong> (ISSN 0030-364X) is a bimonthly journal published by the <strong>Institute</strong> <strong>for</strong> <strong>Operations</strong> <strong>Research</strong> and the Management Sciences at 7240 Parkway Drive, Suite<br />
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permitted provided that a per-copy fee is paid through the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, www.copyright.com.
O PERATIONS R ESEARCH<br />
Contents Volume 60 • Number 4 • July–August 2012<br />
http://or.pubs.in<strong>for</strong>ms.org/<br />
iii I n T h i s I s s u e<br />
Vol. 60, No. 4, July–August 2012, pp. i–ii<br />
ISSN 0030-364X (print) ISSN 1526-5463 (online)<br />
C r o s s c u t t i n g A r e a s<br />
739 Conditional Value-at-Risk and Average Value-at-Risk: Estimation and Asymptotics<br />
So Yeon Chun, Alexander Shapiro, Stan Uryasev<br />
757 A Broader View of Designing the Liver Allocation System EC<br />
Mustafa Akan, Oguzhan Alagoz, Baris Ata, Fatih Safa Erenay, Adnan Said<br />
C o n t e x t u a l A r e a s<br />
771 Bullwhip Effect Measurement and Its Implications<br />
Li Chen, Hau L. Lee<br />
785 Ordering Policies <strong>for</strong> Periodic-Review Inventory Systems with Quantity-Dependent<br />
Fixed Costs EC<br />
Ozgun Caliskan-Demirag, Youhua (Frank) Chen, Yi Yang<br />
797 Technical Note—On Optimal Policies <strong>for</strong> Inventory Systems with Batch Ordering EC<br />
Woonghee Tim Huh, Ganesh Janakiraman<br />
803 Strategies <strong>for</strong> a Centralized Single Product Multiclass M/G/1 Make-to-Stock Queue EC<br />
Hossein Abouee-Mehrizi, Barı¸s Balcıo˘glu, Opher Baron<br />
813 Priority Assignment in Emergency Response<br />
Evin Uzun Jacobson, Nilay Tanık Argon, Serhan Ziya<br />
833 Learning Consumer Tastes Through Dynamic Assortments EC<br />
Canan Ulu, Dorothée Honhon, Aydın Alptekino˘glu<br />
850 Solving an Infinite Horizon Adverse Selection Model Through Finite Policy Graphs<br />
Hao Zhang<br />
865 Robust Assortment Optimization in Revenue Management Under the Multinomial<br />
Logit Choice Model EC<br />
Paat Rusmevichientong, Huseyin Topaloglu<br />
883 Optimal Pricing in Networks with Externalities EC<br />
Ozan Candogan, Kostas Bimpikis, Asuman Ozdaglar<br />
906 Release Time Scheduling and Hub Location <strong>for</strong> Next-Day Delivery EC<br />
Hande Yaman, Oya Ekin Karasan, Bahar Y. Kara<br />
(Continues on page ii)<br />
<strong>Operations</strong> <strong>Research</strong><br />
© 2012 INFORMS
M e t h o d s<br />
918 A Polyhedral Study of Multiechelon Lot Sizing with Intermediate Demands<br />
Minjiao Zhang, Simge Küçükyavuz, Hande Yaman<br />
936 Robust and Stochastically Weighted Multiobjective Optimization Models and<br />
Re<strong>for</strong>mulations EC<br />
Jian Hu, Sanjay Mehrotra<br />
954 Three Ideas <strong>for</strong> the Quadratic Assignment Problem<br />
Matteo Fischetti, Michele Monaci, Domenico Salvagnin<br />
965 Dynamic Pricing Under a General Parametric Choice Model EC<br />
Josef Broder, Paat Rusmevichientong<br />
981 Hazard Rate Scaling of the Abandonment Distribution <strong>for</strong> the GI/M/n + GI Queue in<br />
Heavy Traffic EC<br />
Josh Reed, Tolga Tezcan<br />
996 Overflow Networks: Approximations and Implications to Call Center Outsourcing EC<br />
Itai Gurvich, Ohad Perry<br />
1010 A p p r e c i a t i o n t o 2011 R e f e r e e s<br />
1015 2 0 1 1 M e r i t o r i o u s S e r v i c e A w a r d Re c i p i e n t s<br />
EC Electronic companions designated above are available as part of the online version at<br />
http://or.journal.in<strong>for</strong>ms.org/.<br />
Articles in Advance. For in<strong>for</strong>mation and to access Articles in Advance <strong>for</strong> <strong>Operations</strong> <strong>Research</strong>, visit<br />
http://or.pubs.in<strong>for</strong>ms.org/.<br />
ii <strong>Operations</strong> <strong>Research</strong> 60(4), pp. i–ii, © 2012 INFORMS
UNCOMMON CAREERS AND AN UNCOMMON<br />
APPROACH TO RESEARCH<br />
<strong>Research</strong> is the driving <strong>for</strong>ce behind our property loss-prevention engineering and understanding of the hazards our clients face. FM Global has been the leader in property loss-prevention<br />
research <strong>for</strong> more than 175 years, and our research department is responsible <strong>for</strong> some of the most important breakthroughs in fire protection and loss-prevention engineering.<br />
Sr. <strong>Research</strong> Scientist – Statistician<br />
The position typically conducts work as part of a research program or project under the supervision of a Team or Program manager. The position will focus on the use of statistics<br />
to analyze all facets of data analysis.<br />
• Must have a Ph.D. in a quantitative science with a major or concentration in<br />
statistics, with 0-4 years experience preferred.<br />
Sr. <strong>Research</strong> Scientist / Sr. <strong>Research</strong> Specialist – Risk & Uncertainty Team Lead<br />
This position will serve as Technical Team Leader to the FM Global <strong>Research</strong> Area Director of Risk, Reliability and Failure Prevention and must exhibit technical and personal leadership,<br />
in addition to technical expertise and problem solving skills to develop new projects and programs and per<strong>for</strong>m challenging work on projects as part of one or more research programs.<br />
A Ph.D. in a quantitative science such as statistics, applied mathematics or operations research or engineering with a concentration in mathematical statistics, and 5+ years of<br />
relevant experience is required with:<br />
• Excellent verbal, written and oral communication skills with a track record of professional<br />
publications and presentations.<br />
• A demonstrated ability to efficiently solve complex problems including the development<br />
of new methods as required.<br />
• Leadership skills demonstrated through interactions with diverse technical staff<br />
both within and outside their discipline.<br />
Please email resume with "position" noted in the Subject line to tiara.adducie@fmglobal.com<br />
Your career. Explored.<br />
Insurance evolved.<br />
fmglobal.com/careers<br />
FM Global is an Equal Opportunity Employer. ©2012 FM Global. All rights reserved.<br />
• Familiar with Excel, Access, Minitab, SQL, MATLAB, Visual Basic, or equivalent<br />
applications as well as Bayesian methods, Monte Carlo and bootstrapping techniques,<br />
and have the ability to define causal relationships from analyses.<br />
• Application of Excel, Access, Minitab, SQL, MATLAB, Visual Basic, or equivalent<br />
applications as well as a strong knowledge of Bayesian methods, Monte Carlo and<br />
bootstrapping techniques.<br />
• Knowledge of Data Envelopment Analysis and supply chain analysis methods<br />
would be advantageous.
ASSOCIATE EDITORS<br />
Ali Abbas<br />
University of Illinois at<br />
Urbana–Champaign<br />
Shabbir Ahmed<br />
Georgia <strong>Institute</strong> of Technology<br />
Oguzhan Alagoz<br />
University of Wisconsin,<br />
Madison<br />
Eric Anderson<br />
Northwestern University<br />
Ravi Anupindi<br />
University of Michigan<br />
Mor Armony<br />
New York University<br />
Baris Ata<br />
Northwestern University<br />
Alper Atamturk<br />
University of Cali<strong>for</strong>nia,<br />
Berkeley<br />
Michael Atkinson<br />
Naval Postgraduate School<br />
Michael Ball<br />
University of Maryland<br />
Arnold Barnett<br />
Massachusetts <strong>Institute</strong><br />
of Technology<br />
Russell Barton<br />
Pennsylvania State University<br />
Manel Baucells<br />
Universitat Pompeu Fabra<br />
Amir Beck<br />
Technion, Israel<br />
Damian R. Beil<br />
University of Michigan<br />
David Bell<br />
Harvard University<br />
Peter C. Bell<br />
University of Western Ontario<br />
Fernando Bernstein<br />
Duke University<br />
Omar Besbes<br />
Columbia University<br />
Michel Bierlaire<br />
École Polytechnique Fédérale<br />
de Lausanne (EPFL),<br />
Switzerland<br />
John R. Birge<br />
University of Chicago<br />
Mark Broadie<br />
Columbia University<br />
David B. Brown<br />
Duke University<br />
Sam Burer<br />
University of Iowa<br />
James B. Bushnell<br />
University of Cali<strong>for</strong>nia,<br />
Davis<br />
Alberto Caprara<br />
University of Bologna<br />
Xin Chen<br />
University of Illinois at<br />
Urbana–Champaign<br />
Mung Chiang<br />
Princeton University<br />
William L. Cooper<br />
University of Minnesota<br />
Charles Corbett<br />
University of Cali<strong>for</strong>nia,<br />
Los Angeles<br />
Jose R. Correa<br />
Universidad de Chile<br />
Gregory DeCroix<br />
University of Wisconsin,<br />
Madison<br />
Rommert Dekker<br />
Erasmus School of Economics<br />
René de Koster<br />
Erasmus Univeristy<br />
Shijie Deng<br />
Georgia <strong>Institute</strong> of Technology<br />
Francis E. de Vericourt<br />
INSEAD<br />
Antonius Dieker<br />
Georgia <strong>Institute</strong> of Technology<br />
Izak Duenyas<br />
University of Michigan<br />
Ozlem Ergun<br />
Georgia <strong>Institute</strong> of Technology<br />
Awi Federgruen<br />
Columbia University<br />
Jerzy Filar<br />
Flinders University<br />
Jan C. Fransoo<br />
Technische Universiteit<br />
Eindhoven, The Netherlands<br />
Peter Frazier<br />
Cornell University<br />
Jérémie Gallien<br />
London Business School<br />
Ayalvadi Ganesh<br />
University of Bristol<br />
Vishal Gaur<br />
Cornell University<br />
Kay Giesecke<br />
Stan<strong>for</strong>d University<br />
Boaz Golany<br />
Technion, Israel<br />
Oktay Günlük<br />
IBM <strong>Research</strong><br />
Itai Gurvich<br />
Northwestern University<br />
Albert Y. Ha<br />
Hong Kong University of<br />
Science and Technology<br />
Peter Haas<br />
IBM Almaden <strong>Research</strong> Center<br />
Nicholas G. Hall<br />
The Ohio State University<br />
John J. Hasenbein<br />
University of Texas at Austin<br />
Martin Haugh<br />
Columbia University<br />
Dick den Hertog<br />
Tilburg University<br />
L. Jeff Hong<br />
Hong Kong University of<br />
Science and Technology<br />
Ali Jadbabaie<br />
University of Pennsylvania<br />
Ramesh Johari<br />
Stan<strong>for</strong>d University<br />
Roman Kapuscinski<br />
University of Michigan<br />
Jeffrey Kharoufeh<br />
University of Pittsburgh<br />
Daniel Kuhn<br />
Imperial College London<br />
Gilbert Laporte<br />
HEC Montréal, Canada<br />
Chung-Yee Lee<br />
Hong Kong University of<br />
Science and Technology<br />
Adam Letch<strong>for</strong>d<br />
Lancaster University<br />
Retsef Levi<br />
Massachusetts <strong>Institute</strong><br />
of Technology<br />
Mark Lewis<br />
Cornell University<br />
Andrew Lim<br />
University of Cali<strong>for</strong>nia,<br />
Berkeley<br />
Kyle Y. Lin<br />
Naval Postgraduate School<br />
Jeffrey T. Linderoth<br />
University of Wisconsin, Madison<br />
Vadim Linetsky<br />
Northwestern University<br />
Shie Mannor<br />
Technion, Israel<br />
Patrice Marcotte<br />
Université de Montréal,<br />
Canada<br />
Thomas McCormick<br />
University of British Columbia<br />
Adam Mersereau<br />
University of North Carolina<br />
Ciamac Moallemi<br />
Columbia University<br />
Kamran Moinzadeh<br />
University of Washington<br />
Andrea Montanari<br />
Stan<strong>for</strong>d University<br />
Karthik Natarajan<br />
Singapore University of Technology<br />
and Design<br />
Alexandra Newman<br />
Colorado School of Mines<br />
Tava Olsen<br />
University of Auckland<br />
Ozalp Ozer<br />
University of Texas at Dallas<br />
Rodney Parker<br />
University of Chicago<br />
Raghu Pasupathy<br />
Virginia Tech<br />
Georgia Perakis<br />
Massachusetts <strong>Institute</strong><br />
of Technology<br />
Georg Ch. Pflug<br />
University of Vienna<br />
Andy B. Philpott<br />
University of Auckland<br />
Erica Lee Plambeck<br />
Stan<strong>for</strong>d University<br />
Ioana Popescu<br />
INSEAD<br />
Warren Powell<br />
Princeton University<br />
Ramandeep Randhawa<br />
University of Southern<br />
Cali<strong>for</strong>nia<br />
Randall S. Robinson<br />
Kaj A. Rosling<br />
Linnaeus University<br />
Johannes Royset<br />
Naval Postgraduate School<br />
Mikael Ronnqvist<br />
Norwegian School of<br />
Economics and Business<br />
Administration<br />
Paat Rusmevichientong<br />
University of Southern<br />
Cali<strong>for</strong>nia<br />
Martin Savelsbergh<br />
The University of Newcastle,<br />
Australia<br />
Alan Scheller-Wolf<br />
Carnegie Mellon University<br />
Nicola Secomandi<br />
Carnegie Mellon University<br />
Jay Sethuraman<br />
Columbia University<br />
Devavrat Shah<br />
Massachusetts <strong>Institute</strong><br />
of Technology<br />
Sanjay Shakkottai<br />
University of Texas at Austin<br />
Max Zuo-Jun Shen<br />
University of Cali<strong>for</strong>nia,<br />
Berkeley<br />
Melvyn Sim<br />
National University of<br />
Singapore<br />
J. Cole Smith<br />
University of Florida<br />
Jim Smith<br />
Duke University<br />
Xuanming Su<br />
University of Pennsylvania<br />
Peng Sun<br />
Duke University<br />
Roberto Szechtman<br />
Naval Postgraduate School<br />
Terry Taylor<br />
University of Cali<strong>for</strong>nia,<br />
Berkeley<br />
Tolga Tezcan<br />
University of Rochester<br />
Huseyin Topaloglu<br />
Cornell University<br />
Olivier Toubia<br />
Columbia University<br />
Ilia Tsetlin<br />
INSEAD<br />
Garrett van Ryzin<br />
Columbia University<br />
Gustavo Vulcano<br />
New York University<br />
Amy R. Ward<br />
University of Southern<br />
Cali<strong>for</strong>nia<br />
Adam Wierman<br />
Cali<strong>for</strong>nia <strong>Institute</strong><br />
of Technology<br />
Susan Xu<br />
Pennsylvania State University<br />
David Yao<br />
Columbia University<br />
Wenan Zang<br />
University of Hong Kong<br />
Greg Zaric<br />
University of Western Ontario<br />
Jiawei Zhang<br />
New York University<br />
Shuzhong Zhang<br />
University of Minnesota<br />
Yao Zhao<br />
Rutgers University<br />
Shaohui Zheng<br />
Hong Kong University of<br />
Science and Technology<br />
Xunyu Zhou<br />
University of Ox<strong>for</strong>d<br />
Yong-Pin Zhou<br />
University of Washington,<br />
Seattle<br />
A Journal of the <strong>Institute</strong> <strong>for</strong> <strong>Operations</strong> <strong>Research</strong> and the Management Sciences
The mission of <strong>Operations</strong> <strong>Research</strong><br />
<strong>Operations</strong> <strong>Research</strong> aims to publish high quality papers<br />
that represent the true breadth of the methodologies<br />
and applications that define our field. It serves the entire<br />
operations research community, including practitioners,<br />
researchers, educators, and students. In that respect,<br />
the papers that appear in the journal must<br />
satisfy three essential requirements: operations-focused,<br />
scientific, broad.<br />
For more details and up-to-date policies,<br />
please visit our home page:<br />
http://or.pubs.in<strong>for</strong>ms.org/.<br />
Advisory Board<br />
Patrick T. Harker<br />
University of Delaware<br />
HauL.Lee<br />
Stan<strong>for</strong>d University<br />
Thomas L. Magnanti<br />
Massachusetts <strong>Institute</strong> of Technology<br />
George L. Nemhauser<br />
Georgia <strong>Institute</strong> of Technology<br />
William P. Pierskalla<br />
University of Cali<strong>for</strong>nia, Los Angeles<br />
H. Donald Ratliff<br />
Georgia <strong>Institute</strong> of Technology<br />
Ward Whitt<br />
Columbia University
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