Konstantin E. Avrachenkov is Director of Research at INRIA Sophia Antipolis, France. He is an associate editor of the International Journal of Performance Evaluation and has published more than 40 journal and 50 refereed conference articles. His main research interests are Markov processes, singular perturbation theory, queuing theory, mathematical programming, game theory, and performance evaluation of communication networks. Jerzy A. Filar is Director of Flinders Mathematical Sciences Laboratory at Flinders University, Australia. He is a co-author of Competitive Markov Decision Processes (1996) and has authored or co-authored approximately 100 refereed research papers. He is a Fellow of the Australian Mathematical Society. His research interests span both theoretical and applied topics in operations research, optimisation, game theory, applied probability, and environmental modelling. Phil G. Howlett is Emeritus Professor of Industrial and Applied Mathematics, University of South Australia. He is a member and former Leader of the Scheduling and Control Group (SCG) in the Centre for Industrial and Applied Mathematics (CIAM) and a member of the Barbara Hardy Institute. He was Director of CIAM, 1998-2004; Director of the Australian Mathematics-in-Industry Study Group, 2000-2003; and Chair of ANZIAM (Australia and New Zealand Industrial and Applied Mathematics), 2008-2009. He has worked on the development of optimal driving strategies for trains and solar-powered racing cars and on railway operations efficiency as well as other areas of applied mathematics, including recent work on management of water supply systems, rainfall modelling, and singular perturbations of linear operators.