Pr. Gallien’s research involves the design, analysis and implementation of mathematical models to improve the efficiency of supply chains and global health delivery systems.
His research involves collaborations with firms at the frontier of supply chain management including Amazon, Dell and Zara, working on topics that include inventory distribution (“Initial Shipment Decisions for New Products at Zara” Operations Research 63 (2), pp. 269–286,2015 (with A. Mersereau, M. Nóvoa, A. Dapena and A. Garro).), procurement optimization Dynamic Procurement of New Products with Covariate Information: The Residual Tree Method,”(with G.-Y. Ban and A. Mersereau), submitted to Manufacturing & Service Operations Management, 2017.), dynamic pricing (“Clearance Pricing for a Fast Fashion Retailer” Operations Research 60 (6), pp. 1404–1422, 2012 (with F. Caro). Finalist in the 2012 EURO Excellence in Practice Competition. Finalist in the 2010 Practice Competition of the Pricing and Revenue Management Section of INFORMS.), warehouse control optimization To Wave Or Not To Wave? Order Release Policies for Warehouses with an Automated Sorter” (with T. Weber), Manufacturing & Service Operations Management 12 (4), pp. 642–662, 2010.) and dynamic supply routing Implementing Supply Routing Optimization in a Make-To-Order Manufacturing Network” (with J. Foreman, J. Alspaugh, F. Lopez, R. Bhatnagar and C.C. Teo), Manufacturing & Service Operations Management 12 (4), pp. 547–568, 2010.). Some of this work has been tested as part of large-scale field experiments and implemented in software run by global corporations.
Photo 1: Shipment receipt at a retail store. Photo 2: A global distribution warehouse.
Pr. Gallien has also been collaborating with the Global Fund, the World Bank, the Clinton Health Access Initiative, IBM and the Governments of Zambia and Mozambique on the mathematical analysis of global health delivery systems, working on topics that include inventory distribution of essential medicines, (“The Impact of Inventory Management on Stock-Outs of Essential Drugs in Sub-Saharan Africa: Secondary Analysis of a Field Experiment in Zambia,” PLoS ONE 11(5), 2016 (with Z. Leung, A. Chen and P. Yadav). doi:10.1371/journal.pone.0156026.), design of HIV early infant diagnosis networks (“Improving HIV Early Infant Diagnosis Supply Chains in Sub-Saharan Africa: Models and Application to Mozambique”, to appear in Operations Research, 2017 (with S. Deo and J. Jónasson). First Prize in the 2014 Manufacturing and Service Operations Management Student Paper Competition of INFORMS.) and performance-based procurement funding (“National Drug Stockout Risks in Africa: Analysis of the Global Fund Disbursement Process for Procurement from 2002 to 2013”, to appear in Production and Operations Management, 2017 (with I. Rashkova, P. Yadav and R. Atun).). Some of this work has influenced policy guidelines to practitioners and motivated field deployment projects in sub-Saharan Africa.
Photo 1: Medicine distribution in rural Africa. Photo 2: Field research in northern Ghana.