Skip Ribbon Commands
Skip to main content

Researcher

Profile Picture

Todd Combs, Ph.D.

Associate Laboratory Director, Energy and Environment Science and Technology

Research Areas:

Biography:
Dr. Combs recently joined INL as the Associate Laboratory Director for EES&T. Before joining INL, he served as the Director of the Global Science Division at Argonne National Laboratory where he led a multidisciplinary research team of over 200 that found solutions to protect against, mitigate, respond to, and recover from a wide spectrum of national and global security threats. He also served nearly 14 months as Argonne's interim Associate Laboratory Director for Energy and Global Security, where he led an applied R&D organization of over 800 people addressing domestic and global sustainable energy and security issues. In his role, he oversaw research and operational activities of the energy systems, nuclear engineering, and global security sciences division. Todd earned his doctorate in operations research and master's degree in operations analysis from the Air Force Institute of Technology, and is a graduate of the U.S. Military Academy at West Point. A colonel in the U.S. Air Force Reserve, his military experience includes assignments at the Air Force Research Laboratory, the Air Force Office of Scientific Research, and the Air Force Studies and Analyses Agency. He is a member of the Institute for Operations Research and the Management Sciences and the Military Operations Research Society.

Education:

​Ph.D., Operations Research - Air Force Institute of Technology

M.S., Operations Analysis - Air Force Institute of Technology

B.S., Operations Research - United States Military Academy

Affiliations:

​Institute for Operations Research and the Management Sciences

Military Operations Research Society

Publications:

REFEREED PUBLICATIONS
Ozik, Jonathan, Nicholson Collier, Todd E. Combs, Charles M. Macal, and Michael North, “Repast Simphony Statecharts,” Journal of Artificial Societies and Social Simulation, Vol 18(3)11, 2015.


Riddle, Matthew, Charles M. Macal, Guenter Conzelmann, Todd E. Combs, Diana Bauer, and Fletcher Fields, “Global Critical Materials Markets: An Agent-based Modeling Approach,” Resources Policy, Vol 45, 2015.


Dashora, Yogesh, John W. Barnes, Rekha S. Pillai, Todd E. Combs, and Michael Hilliard, “Optimized Energy Management for Large Organizations Utilizing an On-Site PHEV Fleet, Storage Devices, and Renewable Electricity Generation”, Energy Systems, Vol 3(2), 2012.


Dashora, Yogesh, John W. Barnes, Rekha S. Pillai, Todd E. Combs, Michael Hilliard, and Madhu Chinthavali, “The PHEV Charging Infrastructure Planning (PCIP) Problem,” International Journal of Emerging Electric Power Systems, Vol 11(2), 2010.


*Combs, Todd E. and James T. Moore, “A Hybrid Tabu Search/Set Partitioning Approach to Tanker Crew Scheduling,” Military Operations Research, Vol 9(1), 2004. *This paper was selected as “Best in Group” at the mobility operations session of the 2002 Military Operations Research Society (MORS) Symposium and was runner-up in the symposium’s annual Barchi
paper competition.


Combs, Todd E. and William P. Fox, "Finding a Better Starting Point for the Method of Feasible Directions," COED Journal, Vol. V, No. 2, 1995.


OTHER PUBLICATIONS
Combs, Todd E., Ike Patterson, Glen Harrison, Lucia Spears, Ian Gross, Ingrid Busch, Rick Schmoyer, and Michael Schultze. “Military Munitions Transportation Analysis” ORNL/TM-2011/480, Oak Ridge National Laboratory, 2011.


Combs, Todd E., Ike Patterson, Rekha S. Pillai, Ingrid Busch, Richard Schmoyer, Michael Schultze, Neil Thomas, Rick Goeltz, Robert Gibson, and Jacquelyn Richardson. “Air Cargo Cost Analysis Project Summary Analysis Report: Miami International Airport (Freighter)” ORNL/TM-2009/068, Oak Ridge National Laboratory, 2009. (One of a series of 5 related technical reports)


Pillai, Rekha S., Ike Patterson, Ingrid Busch, Richard Schmoyer, Michael Schultze, Todd E. Combs, Neil Thomas, Rick Goeltz, Robert Gibson, and Jacquelyn Richardson. “Air Cargo Cost Analysis Project Summary Analysis Report: Denver International Airport” ORNL/TM-2009/073, Oak Ridge National Laboratory, 2009. (One of a series of 10 related technical reports)


Pillai, Rekha S., Ike Patterson, Ingrid Busch, Richard Schmoyer, Neil Thomas, Michael Schultze, and Todd E. Combs. “Air Cargo Explosives Detection Pilot Program: Enterprise Modeling and Analysis Results” ORNL/TM-2009/014, Oak Ridge National Laboratory, 2009.


Combs, Todd E. and David Hislop. “At the Edges of the Critical Information Infrastructure (Chapter 2 contributor),” Department of Defense Sponsored Information Security Research: New Methods for Protecting Against Cyber Threats, John Wiley and Sons, 2007.


Combs, Todd E. “A Combined Adaptive Tabu Search and Set Partitioning Approach for the Crew Scheduling Problem with an Air Tanker Crew Application,” Ph.D. Dissertation, Air Force Institute of Technology, 2002.


Combs, Todd E. “Statistical Modeling and Optimization of Nuclear Waste Vitrification,” M.S. Thesis, Air Force Institute of Technology, 1997.

Presentations:

​Military Keynote Speaker: Combs, Todd, “Modeling & Simulation’s Role as a Service to Military & Homeland Security Decision Makers” Winter Simulation Conference ’16, Washington, D.C., 2016.


Rose, Terri and Todd Combs, “Air Cargo Cost Estimating Project (ACCEP)” ADSA11 Workshop – Explosive Detection in Air Cargo Part 2, Boston, MA, 2014.


Conzelmann, Guenter, Matthew Riddle, Todd Combs, Jonathan Ozik, Diana Bauer, and Fletcher Fields, “Analyzing Global Critical Materials Market Dynamics Using GCMat – a New Agent-based Model (Poster)” Critical Materials Institute: Second Annual Meeting, Ames, Iowa, 2014.


Combs, Todd, Matthew Riddle, Charles Macal, and Guenter Conzelmann, “Development of an Agent-Based Model for the Critical Materials Market (Poster)” MORS Symposium, Alexandria, VA, 2013.


Kudo, Terence Y., Todd E. Combs, and David B. Gillespie. “Individual Cost Assessment Model (ICAM)” MORS Symposium, Alexandria, VA, 2013.


Alfaro, Jaime and Todd E. Combs. “Optimal Basing for Optimal Geopresence – A Multi-objective Decision Making Process,” MORS Symposium, Monterey, CA, 2004.


Combs, Todd E. and James T. Moore. “A Hybrid Tabu Search/Set Partitioning Approach to Tanker Crew Scheduling,” MORS Symposium, Ft. Leavenworth, KS, 2002.


Combs, Todd E., James T. Moore, and J. Wesley Barnes. “The Tanker Crew Scheduling Problem,” Institute for Operations Research and the Management Sciences (INFORMS) Annual Meeting, Miami, FL, 2001.


Combs, Todd. E., “An Efficient Group Theoretic Tabu Search Approach to the Crew Scheduling Problem,” MORS Education Colloquium, Ft. Belvoir, VA, 2001.


Combs, Todd E. and William P. Fox. “Finding a Better Starting Point for the Method of Feasible Directions,” TIMS/ORSA Joint National Conference, Boston, MA, 1994.

Research Interests:

​Application of Operations Research to Energy, Homeland Security, and Military Problems
Simulation Modeling and Analysis (Discrete Event and Agent-based)
Optimization Using the Integration of Metaheuristic Search and Exact Methods

Version: 7.0
Created at 5/3/2017 1:56 PM by Phyllis L. King
Last modified at 5/10/2017 12:15 PM by Phyllis L. King