Gyana Parija IBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598 (parijaus.ibm.com). Mr. Parija joined IBM in 1994 upon receiving a Ph.D. degree in industrial engineering, with a major in operations research, from Texas A&M University. His current research and development interests include the application of deterministic and stochastic integer programming modeling and solution techniques to challenging real-world problems.

Tarun Kumar IBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598 (ktarunus.ibm.com). Mr. Kumar received his B.Tech. degree in electronics and telecommunication in 1997 from Jawaharlal Nehru Engineering College, India. After graduation, he worked as an IT consultant for Covansys, joining IBM in 2000. At IBM, he has worked on the design and delivery of innovative solutions in the field of business value modeling, risk management, and grid infrastructure capacity planning. Mr. Kumar's current interests include designing and delivering integrated end-to-end applications incorporating optimization technology to provide customers a competitive advantage.

Haifeng Xi IBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598 (haifengxius.ibm.com). Mr. Xi received his B.S. and M.S. degrees in automation from Tsinghua University, China, in 1995 and 1997, respectively, and his M.S. degree in electrical and computer engineering from the University of Maryland in 1999. In 2002, following three years of IT consulting in enterprise application integration and development, he joined the IBM Thomas J. Watson Research Center to work in the areas of supply chain management and business process management. Mr. Xi's current interests include service-oriented architecture, business integration, supply chain management, and emerging business solutions.

Dan Keller USDA Forest Service, Information Systems Project Office, 740 Simms Street, Golden, Colorado 80401 (DKellerfs.fed.us). Mr. Keller is the Senior Project Manager for the Fire Program Analysis (FPA) project with the USDA Forest Service. His background is in applied applications of operations research and biometrics to natural resource management problems.