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Dr. Rafael Diaz

Rafael Diaz is Research Affiliate at the MIT Center for Transportation and Logistics. Previously, he has been PhD Program Director and Professor of Supply Chain Management at the MIT-Zaragoza International Logistics Program, as well as a Research Associate Professor of Modeling and Simulation at Old Dominion University’s Virginia Modeling, Analysis, and Simulation Center (VMASC).

He has a Ph.D. degree in the field of Modeling and Simulation focused on Operations and Supply Chains Management and an M.B.A degree in financial analysis and information technology from Old Dominion University. He holds a B.S. in Industrial Engineering from Jose Maria Vargas University, Venezuela.

Prof. Diaz's research interests lie in the general area of supply chain management, logistics, production planning, lean manufacturing systems, and the intersection between operations management and information and technology. He is also interested in researching healthcare management and humanitarian logistics systems. Dr. Diaz's publications have appeared in several prestigious peer-reviewed journals including Production and Operations Management (POM), International Journal of Production Economics (IJPE), Computers and Industrial Engineering (CAIE), and Transportation Research Part A and Part E. Over the years, his research has been supported by a number of sponsors including National Institutes of Health (NIH), Virginia Department of Emergency Management (VDEM), U.S. Housing and Urban Development (HUD), and the U.S. Department of Labor (DOL).

Prior to his academic career, Dr. Diaz worked for seven years as a process engineer and management consultant in the international consulting arena.


  • Behr JG, Diaz R., Akpinar-Elce, M. Health Service Utilization and Poor Health Reporting in Asthma Patients. International Journal of Environmental Research and Public Health, 2016. Vol. 13 (7), art. 645.
  • Diaz, R. Using dynamic demand information and zoning for the storage of non-uniform density stock keeping units. International Journal of Production Research. Vol. 54, (8), 2016, pp. 2487-2498.
  • Hua, L., Behr, JG., Díaz, R. Population vulnerability to storm flooding in Coastal Virginia, USA. Integrated Environmental Assessment and Management. Vol. 12 (3), July 2016, pp. 500-509.
  • Behr JG, Diaz R. Emergency Department Frequent Utilization for Non-Emergent Presentments: Results from a Regional Urban Trauma Center Study. PLoS ONE, 2016, Vol. 11 (1): e0147116.
  • Diaz, R., Bailey, M.P., Kumar, S. Analizing a lost-sale stochastic inventory model with Markov-modulated demands: A simulation-based optimization study. Journal of Manufacturing Systems, Vol. 38, 2016, pp. 1-12.
  • Diaz, R., Behr, J., Kumar, S., Britton, B. Modeling chronic disease patient flows diverted from emergency departmens to patien-centered medical homes. IIE Transactions on Healthcare Systems Engineering. Vol. 5, 2015, pp. 268-285.
  • Diaz R. Combining Layout and Zoning Warehouse Solutions for the Storage of Non-uniform Density Stock Keeping Units. International Journal of Production Research (IJPR). Forthcoming.
  • Diaz R., Kumar Sameer, Bailey Mike. Analyzing Lost-Sale Stochastic Inventory Model with Markov-Modulated Demands: A Simulation-based Optimization Study. Journal of Manufacturing Systems. Forthcoming.
  • Behr G., Diaz R. Giles Bridget. Emergency Department Frequent Utilization for Non-emergent Presentments: Results from a Regional Urban Trauma Center Study. PLOS ONE. Forhtcoming.
  • Diaz R., Behr Joshua, Britton B. Modeling Chronic Disease Patient Flows Diverted from Emergency Departments to Patient-Centered Medical Homes. IIE Transactions – Healthcare Systems Engineering. Forthcoming.
  • Diaz R., Behr Joshua, Britton B. Analyzing Chronic Disease Management Impacts on Ambulatory Healthcare Capacity: A Simulation Framework. Simulation. Forthcoming.
  • Behr J. G., Diaz R. Knapp Barry, Kratzke Cynthia (2015). Framework for Classifying Compliance and Medical Immediacy among low activity presentations at an urban trauma center. International Journal of Emergency Medicine. Forthcoming.
  • Diaz R., Behr J. Quantifying the Economic and Demographic Impact of Transport Infrastructure Investments Framework. Simulation. Acepted.
  • Ng ManWo, Diaz R., Behr Joshua. Inter- and Intra-regional Evacuation Behavior during Hurricane Irene: Results from a Large-Scale Phone Survey. Journal of Travel Behaviour and Society (2016) Vol 3 pp 21-28.
  • Akpinar-Elci Muge, Martin Francis, Behr Joshua, Diaz R. Saharan Dust, climate variability, and Asthma. International Journal of Biometeorology (2015) Vol 59 (11) pp 1667-1671.
  • Diaz R., Behr Joshua, Longo Francesco, Landaeta Rafael, Nicoletti Letizia. Modeling Energy Portfolio Scoring: A Simulation Framework. International Journal of Business Analytics (IJBAN).(2015) Vol 2(4) pp1-22.
  • ManWo Ng, Diaz R., Joshua Behr. Departure time choice behavior for hurricane evacuation planning: The case of the understudied medically fragile population Transportation Research Part E: Logistics and Transportation Review. (2015) Vol 77 pp 215-226.
  • Diaz R., Sameer Kumar, Behr Joshua (2015). Housing Recovery in the Aftermath of a Catastrophe: Material Resources Perspective. Computers & Industrial Engineering Journal (C&IE). Vol 81 pp 130-139.
  • Diaz R., Szklo-Coxe, Mariana, Behr Joshua. Modeling the Transition from Adverse to Healthy Sleep Behaviors among School Age Children:A simultaion Approach. International Journal of Information Systems and Social Change (2015). Vol. 6 (2). pp 1-15, April-June 2015.
  • Liu Hua, Behr Joshua, Diaz R. Population vulnerability to storm surge flooding in coastal Virginia, U.S.A. Integrated Environmental Assessment and Management (IEAM). n/a, August 2015.
  • Kumar Sameer, Diaz R., Behr Joshua. Modeling the effects of labor on housing reconstruction: A system perspective (2015). International Journal of Disaster Risk Reduction (IJDRR) Vol 12 pp 154-162.
  • Nicoletti Letizia, Chiurco Alessandro, Arango Carlos, Diaz R . Hybrid approach for container terminals performances evaluation and analysis. International Journal of Simulation and Process Modelling (2014) Vol. 9(1) pp 104-112.
  • Diaz R., Behr Joshua. Analyzing the effects of serially–correlated demands on costs and service levels: a lost–sale case inventory system. International Journal of Applied Management Science (IJAMS) (2014) Vol. 6, No. 4 pp 285-303.
  • ManWo Ng, Joshua Behr, Diaz R. (2014). Unraveling the evacuation behavior of the medically fragile population: Findings from hurricane Irene. Transportation Research Part A: Policy and Practice Vol 64 pp 122-134.
  • Behr J., Diaz R. (2014) Modeling and simulation standards development, adoption and conformity in the attainment of system values: A framework for the tension between two process ideals. Simulation. 90 (5) pp 591-605.
  • Diaz R., Behr J. A Simulation Framework for Evaluating the Effectiveness of Chronic Disease Management Interventions (2014). International Journal of Information Systems in the Service Sector (IJISSS). Vol. 6 No. 4. pp 40-59.
  • Diaz R., Behr J, Anna Jeng, Manwo Ng. The Effects of Transit Corridor Developments on the Healthcare Access of Medically Fragile Vulnerable Populations (2013). International Journal of Privacy and Health Information Management (IJPHIM) Vol 1 (2) 57-75.
  • Behr J. and Diaz R. Disparate health implications stemming from the propensity of elderly and medically fragile populations to shelter in place during severe storm events. Journal of Public Health Management and Practice (JPHMP) (2013) Vol 19 S55-S62.
  • Diaz R., Behr J., Liu Hua, Longo, Francesco. A Systems Framework for Modeling Health Disparities in the Prevalence in Chronic Conditions following a Natural Disaster Event. International Journal of Privacy and Health Information Management (IJPHIM) (2012) Vol 1 (1) pp 12-28.
  • James Blando, Leonard Bielory, Viann Nguyen, Diaz R., Hueiwang Anna Jeng (2012). Anthropogenic Climate Change and Allergic Diseases. Atmosphere (2012) Vol. 3 pp 200-212.
  • Ardalan, A. and Diaz R. An Evaluation of the NERJIT Priority Rule in a Kanban-Controlled Flowshop. Production and Operations Management (POMS). (2012) Vol 21 (5) 923-938.
  • Diaz R., Behr J. & Tulpule M. A System Dynamics Model for Simulating Ambulatory Health Care Demands. Simulation in Healthcare. (2012) Vol. 7. No. 4: 243-250.
  • Ardalan, A. and Diaz R. NERJIT: Using Net Requirement Data in Kanban-Controlled Jumbled-Flow Shops. Production and Operations Management (POMS) (2012) Vol 21 pp 606–618.
  • Diaz R. and Ezell Barry C. Using Analytical Network Process Decision Methodology to Analyze and Allocate Resources in the Army Training Support System, International Journal of Operations Research and Informations Systems, (2012) Vol. 3 (3) pp 53-73.
  • Diaz R. and Ezell Barry C. A Simulation-based Optimization Approach to a Lost Sale Stochastic Inventory Model, International International Journal of Operations Research and Informations Systems, (2012) Vol. 3 (2) pp 46-63.
  • Diaz R. and Bailey M. Building knowledge to improve enterprise performance from inventory simulation models. International Journal of Production Economics (IJPE). (2011) Vol134 (1) pp 108-113.
  • Diaz R., Talley W., & Tulpule M. Forecasting Empty Container Volumes. Special Issue of the Asian Journal of Shipping and Logistics (2011) Vol. 27 (2) 217-236.
  • Diaz R and Ardalan A. An Analysis of Dual-Kanban Just-In-Time Systems in a Non-repetitive Environment. Production and Operations Management (POMS). (2010) Vol. 19, No. 2.