Les W. Wyman IBM Systems and Technology Group, 2455 South Road, Poughkeepsie, New York 12601 (lwymanus.ibm.com). Mr. Wyman retired in 1993 as a Senior Technical Staff Member and rejoined IBM in 1999. He has held numerous technical and technical leadership positions in programming systems, channel engineering, and systems architecture, including the mainframe zSeries* logical partitioning and multiple high-performance virtual machine conceptualizations and architectures, the multiple logical channel subsystem conceptualization and architecture, the queued direct I/O (QDIO) architecture, System z zAAP conceptualization, and others. Mr.Wyman has achieved the IBM Ninth Plateau Invention Achievement Award and has received numerous IBM division and corporate technical achievement awards.

José Castaño IBM Systems and Technology Group, 2455 South Road, Poughkeepsie, New York 12601 (castanous.ibm.com). Mr. Castaño received a B.B.A. degree from Pace University. He is the program director and manager for System z strategy and technology for z/OS and the strategy manager for the zSeries on demand initiative. He is the technical chairman of the System z e-Business Leadership Council and the System z System Design Council.

Jeffrey P. Kubala IBM Systems and Technology Group, 2455 South Road, Poughkeepsie, New York 12601 (kubesus.ibm.com). Mr. Kubala received a B.S.E. degree in computer engineering from the University of Connecticut. He is an IBM Distinguished Engineer and Master Inventor in the z/OS development department. He is currently the technical team leader for the System z LPAR hypervisor. Mr. Kubala, in addition, is actively engaged with the iSeries* and pSeries* hypervisor teams as a technical consultant.

Robert J. (Bob) Maddison IBM Software Group, Hursley Park, Winchester, England SO21 2JN (bob_maddisonuk.ibm.com). Mr. Maddison was involved in the development of Java virtual machines specializing in z/OS-specific issues, including the design and implementation of JVM support for zAAPs. He currently works with the recently formed common infrastructure development team in the field of information management.

Bernard R. Pierce IBM Systems and Technology Group, 2455 South Road, Poughkeepsie, New York 12601 (brpierceus.ibm.com). Mr. Pierce has been a leader and innovator in performance analysis and design for thirty years. He is a Senior Technical Staff Member with responsibility for performance analysis and performance design of the z/OS operating system. He has been instrumental in the z/OS design to support zAAPs and zIIPs as well as research in the management of high-end SMP systems. Mr. Pierce is the inventor or coinventor of five patents relating to z/OS resource management.

Robert R. Rogers IBM Systems and Technology Group, 2455 South Road, Poughkeepsie, New York 12601 (rrrogersus.ibm.com). Mr. Rogers received a B.A. degree in mathematics from Marist College. He is an IBM Distinguished Engineer working on System z software system design. He has received several IBM Outstanding Technical Achievement and IBM Outstanding Innovation Awards for his design work. Mr. Rogers was a recipient of the 2000 IBM Chairman's Award.

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