Contributors

Flavia Bonomo (“An Application of the Traveling Tournament Problem: The Argentine Volleyball League”) holds a PhD in computer science and a degree in mathematics from the University of Buenos Aires. She is an assistant professor in the Computer Science Department of the School of Sciences at the University of Buenos Aires and a researcher at IMAS-CONICET. Her research interests include graph theory, optimization, and applications of OR.

Andrés Cardemil (“An Application of the Traveling Tournament Problem: The Argentine Volleyball League”) holds a degree in computer science from the University of Buenos Aires and is a private consultant in OR. His interests include optimization, heuristics, and applications of OR.

Guillermo Durán (“An Application of the Traveling Tournament Problem: The Argentine Volleyball League” and “Operations Research Techniques for Scheduling Chile's Second Division Soccer League”) holds a PhD in computer science and an undergraduate degree in mathematics from the University of Buenos Aires. He is head of the Instituto de Cálculo and assistant professor in the Mathematics Department of the School of Sciences at the University of Buenos Aires (Argentina), adjunct professor in the Industrial Engineering Department at the University of Chile (Chile), and researcher at CONICET (Argentina). His research interests include operations research, graph theory, combinatorial optimization, and applications of OR.

Mark Grabau (“Softball Scheduling as Easy as 1-2-3 (Strikes You're Out)”) works in IBM Global Business Services' Business Analytics and Optimization (BAO) service line, where he serves as the North American Financial Services Sector Lead for the Advanced Analytics and Optimization (AAO) practice. He is interested in driving effective decisions, actions, and results through the application of OR. He has over 19 years of analytical experience across a breadth of industries. He earned a bachelor's degree in OR from the United States Air Force Academy and master's degrees in OR and statistics from the Colorado School of Mines. He resides in Westerville, Ohio, where he proudly coaches both of his daughters' softball teams.

Mario Guajardo (“Operations Research Techniques for Scheduling Chile's Second Division Soccer League”) is an industrial engineer with a master's degree in operations management from the University of Chile. He is a PhD student in the management science program at the NHH Norwegian School of Economics. His research interests include sports scheduling, inventory management, and oil supply chain management.

Mark Husted (“Scheduling Softball Series in the Rocky Mountain Athletic Conference”) graduated from the Colorado School of Mines with a master's degree in energy systems and power electronics. He earned his undergraduate degree in electrical engineering from the same institution. As a collegiate runner, Mark was the division II national champion over 800m and the distance medley relay; he was also named ESPN's Academic All-American Athlete of the Year. He is pursuing interests in optimization by continuing to create sports schedules.

Kent J. Kostuk (“A Decision Support System for Scheduling the Canadian Football League”) is the industrial engineering director at Federated Co-operatives Limited in Saskatoon, Saskatchewan, Canada. He is a graduate of the Department of Civil Engineering, University of Saskatchewan (BSc, MSc, and PhD) and Stanford University (MS in engineering-economic systems). He has been active in sports analytics for more than 30 years.

Javier Marenco (“An Application of the Traveling Tournament Problem: The Argentine Volleyball League”) holds a PhD and a degree in computer science from the University of Buenos Aires. He is assistant professor at the Sciences Institute at the National University of General Sarmiento and a private consultant in OR. His research interests include integer programming and applications of OR.

Alexandra M. Newman (“Scheduling Softball Series in the Rocky Mountain Athletic Conference”) is an associate professor at the Colorado School of Mines with research interests in applied optimization. She received her PhD in industrial engineering and OR from the University of California at Berkeley and her undergraduate degree in applied mathematics from the University of Chicago. While at the University of Chicago, she was a two-time conference champion and three-time national qualifier in track and field over the distances of 5,000m and 10,000m.

Celso C. Ribeiro (“Scheduling the Brazilian Soccer Tournament: Solution Approach and Practice”) is a full professor in the Department of Computer Science at the Universidade Federal Fluminense, Brazil. He has a bachelor's degree in electrical engineering (Catholic University of Rio de Janeiro, 1976) and an MSc in systems engineering (Federal University of Rio de Janeiro, 1978). He earned his doctorate in computer science at the Ecole Nationale Supérieure des Télécommunications (Paris, France) in 1983. His research is supported by the Brazilian Council of Scientific and Technological Development (CNPq) and by the Rio de Janeiro State Foundation for Research Support (FAPERJ). He was president of the Brazilian Operations Research Society (SOBRAPO, 1989-1990) and the Latin-American Association of Operations Research Societies (ALIO, 1992-1994), and vice-president of the International Federation of Operational Research Societies (IFORS, 1998-2000). He is the general editor of International Transactions in Operational Research, published by IFORS. He chaired the Department of Modernization Programs of the Brazilian Ministry of Education from 2005 to 2007 and served as Adjoint Secretary of Education for Human and Technological Resources of the state of Rio de Janeiro from 2007 to 2008.

Daniela Sabán (“An Application of the Traveling Tournament Problem: The Argentine Volleyball League”) holds a degree in computer science from the University of Buenos Aires and is a graduate student in computer science.

Marjorie Cone Saur (“Scheduling Softball Series in the Rocky Mountain Athletic Conference”) is an analyst on the global market analysis team within Rio Tinto Kennecott Utah Copper. She received both her MS in mineral and energy economics and BS in economics and business from the Colorado School of Mines in Golden, Colorado. As an undergraduate student-athlete on the women's varsity softball team, she earned all-district academic honors from ESPN Magazine and first team all-RMAC academic honors.

Kaleigh Starr (“Scheduling Softball Series in the Rocky Mountain Athletic Conference”) is a graduate student pursuing a master's degree in mineral and energy economics from the Colorado School of Mines (CSM). She completed her undergraduate degree at CSM in economics and business. As an undergraduate, Kaleigh participated on the CSM softball team, garnering all-conference accolades in the 2008, 2009, and 2010 seasons, and honorable mention all-American recognition in the 2009 season as an outfielder.

Michael A. Trick (“Scheduling Major League Baseball Umpires and the Traveling Umpire Problem”) is Professor of Operations Research and Associate Dean, Research at the Tepper School of Business, Carnegie Mellon University. His research is in the areas of discrete optimization, sports scheduling, and social choice. He was president of INFORMS in 2002 and is a Fellow of that society.

Sebastián Urrutia (“Scheduling the Brazilian Soccer Tournament: Solution Approach and Practice”) is a professor in the Computer Science Department at the Federal University of Minas Gerais, Belo Horizonte, Brazil. He received his BS degree in computer science in 2001 from the University of Buenos Aires. In 2005, he earned a PhD in informatics from the Pontifical Catholic University of Rio de Janeiro, Brazil. After receiving his PhD, he joined the OR laboratory at the Federal University of Minas Gerais, where he works in the development of optimization algorithms. He is active in local search heuristics and integer programming algorithms. He served as a reviewer for several major journals and international conferences in these areas, published several papers in archival journals and international conferences, and presented his work at a number of technical meetings. Recently he has collaborated with Celso Ribeiro and the Brazilian Football Confederation in scheduling the yearly Brazilian soccer championship.

Keith A. Willoughby (“A Decision Support System for Scheduling the Canadian Football League”) is an associate professor in the Edwards School of Business at the University of Saskatchewan. Previously he was employed as a senior OR specialist with the Health Quality Council. He earned his PhD at the University of Calgary and is a lifelong fan of the Canadian Football League.

Rodrigo Wolf-Yadlin (“Operations Research Techniques for Scheduling Chile's Second Division Soccer League”) works in public transportation at Metro de Santiago, in Chile. He earned a degree in industrial engineering at the University of Chile, where he also completed a master's in OR. He has worked at the University of Chile as a lecturer in both optimization and operations management. His publications in international journals focus mainly on sports scheduling.

Hakan Yildiz (“Scheduling Major League Baseball Umpires and the Traveling Umpire Problem”) is an assistant professor in the Department of Supply Chain Management at Michigan State University. He received his MS and PhD degrees in OR from the Tepper School of Business at Carnegie Mellon University. His research is on modeling and developing solution methods for logistics optimization problems such as scheduling and routing vehicles and resources, facility location, and supply chain network design.

Tallys Yunes (“Scheduling Major League Baseball Umpires and the Traveling Umpire Problem”) is assistant professor of management science at the School of Business Administration, University of Miami. His research interests include optimization and hybrid methods, with applications in planning, scheduling, and product line simplification. He holds a PhD in OR from Carnegie Mellon University, as well as MS and BS degrees in computer science and computer engineering from the University of Campinas in Brazil.