1. Director, Network for Computational Modeling in Social and Ecological Sciences, Tempe, AZ, USA.
2. Director, Urban Eco-Evolutionary Research Network, Seattle, WA, USA.
3. President, International Environmental Modelling and Software Society, Manno, Ticino, Switzerland.
4. Managing Director, Computer Simulation and Advanced Research Technologies, Sydney, NSW, Australia.
5. Head, Systems Modeling and Simulation at the Brain and Mind Centre, University of Sydney, NSW, Australia.
6. Executive Director, Consortium of Universities for the Advancement of Hydrologic Science Inc., Cambridge, MA, USA.
7. President, Operational Research Society, Birmingham, West Midlands, UK.
8. Director, Open Geographic Modeling and Simulation at Nanjing Normal University, Nanjing, Jiangsu, China.
9. President, Society for Modeling and Simulation International, Suffolk, VA, USA.
10. Governing Committee, Mathematical Epidemiology Subgroup of the Society for Mathematical Biology, West Lafayette, IN, USA.
11. Secretary-General, International Society for Ecological Modeling, Severna Park, MD, USA.
12. Director, Business Intelligence Team of the City of Sheffield, Sheffield, South Yorkshire, UK.
13. Director, Center on Social Dynamics and Policy at the Brookings Institution, Washington, DC, USA.
14. Chair, Planet Texas 2050 Bridging Barriers Program at the University of Texas, Austin, TX, USA.
15. Director, Social System Design Lab of Washington University, St. Louis, MO, USA.
16. Director, System Dynamics Group at the University of Bergen, Bergen, Norway.
17. Research Investigator, HealthPartners Institute, Minneapolis, MN, USA.
18. Director, Center for Social Dynamics and Community Health of the University of Pittsburgh, Pittsburgh, PA, USA.
19. Director, Systems Science in Public Health and Health Economics Research Consortium, Sheffield, South Yorkshire, UK.
20. Executive Director, System Dynamics Society, Albany, NY, USA.
21. Director, Center for Open Science, Charlottesville, VA, USA.
22. Director, Computational Epidemiology and Public Health Informatics at the University of Saskatchewan, Saskatoon, SK, Canada.
23. Founder, System Science in Health, Saskatoon, SK, Canada.
24. Director, Intelligent Systems and Geosciences Research Coordination Network, Austin, TX, USA.
25. President, European Social Simulation Association, Zürich, Zürich, Switzerland.
26. President, Society for Medical Decision Making, Bridgewater, NJ, USA.
27. Executive Director, Earth Science Information Partners, Boulder, CO, USA.
28. Co-Leader, Agricultural Model Intercomparison and Improvement Project, New York, NY, USA.
29. President, International Society for the Systems Sciences, Ashland, KY, USA.
30. Director, Center for Community Health Integration at Case Western Reserve University, Cleveland, OH, USA.
31. Executive Director, Community Surface Dynamics Modeling System, Boulder, CO, USA.