techniques for scientific visualization, of which the virtual wind tunnel is the main focus. He began work in the virtual reality field in 1984 at VPL Research, working on a graphics-based programming environment using the prototype DataGlove for input; later he was involved in work on the DataGlove model II. He joined the VIEW lab at the NASA-Ames Research Center in 1987, where he was involved in integrating the various input-output and graphics systems into a virtual environment. This included research in software architectures for virtual reality systems and human factors. In 1991, he was cochair of the IEEE Symposium on Research Frontiers in Virtual Reality and is program cochair of the IEEE Virtual Reality Annual International Symposium.

NORMAN HACKERMAN is chairman of the Scientific Advisory Board at the Robert A. Welch Foundation. He is president emeritus of Rice University, where he was president and a professor of chemistry for 15 years. Prior to that, he had a long and distinguished career at the University of Texas at Austin, where he served as president and held various positions, including director of the Corrosion Research Laboratory and on state boards and on committees focusing on various aspects of research and education. He was technical editor and then editor of the Journal of the Electrochemical Society from 1950 to 1990. He has served on a dozen National Academy of Science/National Research Council panels and committees and is a past chairman of the Board on Energy Studies and of the Commission on Physical Sciences, Mathematics, and Applications. He is the author or coauthor of more than 200 publications. He has a Ph.D. in chemistry from Johns Hopkins University.

JOHN M. HOLLERBACH is professor of computer science at the University of Utah. From 1989 to 1994 (including his time of membership on the committee) he was the natural sciences and engineering/Canadian Institute for Advanced Research professor of robotics at McGill University. From 1982 to 1989 he was on the faculty of the Department of Brain and Cognitive Sciences and a member of the Artificial Intelligence Laboratory at the Massachusetts Institute of Technology. He received a Ph.D. in computer science from MIT in 1978. He was a member of the Administrative Committee of the IEEE Robotics and Automation Society from 1989 to 1993. He is a technical editor of the IEEE Transactions on Robotics and Automation, treasurer of the IEEE/ASME Journal of Microelectromechanical Systems, and a senior editor of Presence.

JAMES R. LACKNER is Riklis professor of physiology and director of the Ashton Graybiel Spatial Orientation Laboratory at Brandeis University. He received B.Sc. and Ph.D. degrees from the Massachusetts Institute of



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