JEFFREY A. JOINES is an Associate Professor and the Associate Department Head of Undergraduate Programs in the Department of Textile Engineering, Chemistry, and Science at NC State University. He received a B.S. in Electrical Engineering and B.S. in Industrial Engineering, a M.S in Industrial Engineering, and Ph.D. in Industrial Engineering, all from NC State University. He received the 1997 Pritsker Doctoral Dissertation Award from the Institute of Industrial Engineers. He is a member of IEEE, IIE, ASEE, Tau Beta Pi, Etta Kappa Nu, Alpha Pi Mu and Phi Kappa Phi. His research interests include supply chain optimization utilizing computer simulation and computational optimization methods. Dr. Joines teaches graduate and undergraduate classes in computer information systems, computer based modeling in Excel and VBA, and computer simulation for Six-Sigma. Dr. Joines also teaches industry programs in the areas of Design for Six Sigma, Simulation and Six Sigma, and Data Management. Dr. Joines currently serves on the WSC Board of Trustees representing the IEEE Systems, Man, and Cybernetics Society. He has also been an author and session chair for several Winter Simulation Conferences.

STEPHEN D. ROBERTS is a Distinguished Professor in the Edward P. Fitts Department of Industrial and Systems Engineering at NC State University. Professor Roberts received his: Ph.D., M.S.I.E., and B.S.I.E. (with Distinction) from the School of IE at Purdue University. His primary teaching and research interests are in simulation modeling and health systems engineering. He has been a faculty member at NC State University since 1990, serving as Department Head of the Department of Industrial Engineering and as Interim Director of the Integrated Manufacturing Systems Engineering Institute. Prior to serving at NC State, he was a faculty member in the Department of Internal Medicine at the Indiana University School of Medicine and the School of Industrial Engineering at Purdue University as well as the Director of the Health Systems Research Group at Regenstrief Institute for Health Care. Previously, he was a faculty member in the Department of Industrial and Systems Engineering at the University of Florida and Director of the Health Systems Research Division of the J. Hillis Miller Health Center, University of Florida. He has had sabbaticals at Wolverine Software and the University of Central Florida/Institute for Simulation and Training.