Moustafa A. Chaaban, P.E., has had a career that spans over 40 years. Beginning in 1958, he was a mechanical engineer for Egypt's five-year industrial plan. After obtaining his Ph.D. in 1970, his focus turned to academia, where he has been involved with the development of new courses and teaching techniques for the engineering curriculum. He has contributed to the establishment of mechanical engineering departments at Khartoum University, Khartoum, Sudan (1970-72) and King Abdulaziz University, Jeddah, Saudi Arabia (1977-82), the industrial engineering department at the University of Jordan, Amman, Jordan (1987-89), and the Technology Research Center, University of United Arab Emirates, Al-Ain, Abu Dhabi, United Arab Emirates (1989-93). Chaaban currently is professor of production engineering at Ain Shams University. Ph.D. (1970), Imperial College, University of London.

Patrick Oosthuizen was born and schooled in South Africa. He obtained his bachelor's degree from the University of Cape Town and a master's in aerospace engineering from the University of Toronto. After teaching for several years at the University of Cape Town, he joined Queen's University of Hamilton, Ontario, in 1968. He teaches convective heat transfer, compressible fluid flow, finite element methods and aerospace engineering. His current research interests are natural and mixed convective heat transfer, measurement of local heat transfer rates, flow in porous media and solar crop drying. Oosthuizen is the author of more than 400 technical papers and has written Compressible Fluid Flow and Convective Heat Transfer Analysis. He has received a number of teaching and research paper awards, been involved with the organization of many national and international conferences and has edited several conference proceedings. Ph.D. (1968), University of Cape Town.

S.A. Sherif has been on the faculty at the University of Florida since 1991. Previously, he taught at the University of Miami (1987-91) and Northern Illinois University (1984-87). He is a faculty fellow of NASA-Kennedy, NASA-Marshall, Argonne National Laboratory, AFOSR and the Arnold Engineering Development Center. He has authored 19 bound volumes, eight book chapters, 70 refereed journal papers and 110 conference papers and technical reports. Sherif has made contributions to the understanding of the mechanism of frost and ice formation in the supersaturated zone, second law analysis and optimization of advanced energy systems, and heat-actuated space thermal management systems. He served as chair of the Coordinating Group for Fluid Measurements of the Fluids Engineering Division (FED) and as a member of FED's Special Awards Committee, the Honors Committee and K-19 of the Heat Transfer Division (HTD). He is currently serving a five-year term on the Executive Committee of the Advanced Energy Systems Division. Ph.D. (1985), Iowa State University.

Joseph L. Smith, Jr., P.E., has been an ASME member since 1959. He has been at MIT since 1955, joining the mechanical engineering faculty in 1958. Starting in 1967, he assumed a leadership role in developing the undergraduate thermodynamic curriculum that has been used in the mechanical engineering department at MIT. His research has been in cryogenic refrigeration, entropy flow, entropy generation, refrigeration techniques, stirling cycle cryogenic refrigeration analysis and pressure cycling thermal regeneration, periodic heat transfer driven by pressure cycles and utilization of a complex heat transfer coefficient. Smith was a pioneer in the development of high-speed superconducting rotors cooled internally by liquid helium and in the development of continuous transfer of liquid helium rotor. He played a leadership role in demonstrating the feasibility of a synchronous alternator with rotating superconducting field winding at the 10-MW power level. He has operated the helium liquefaction facility at MIT since 1964 with systematic upgrades and reliability improvements as graduate thesis projects. Sc.D. (1959), Massachusetts Institute of Technology.

Allan Zarembski, P.E., has been an industry leader for almost three decades. He is president of Zeta-Tech, a consulting engineering firm he founded in 1984 in Cherry Hill, N.J., which serves the railroad, transit and transportation systems industries. The recipient of P.E. licenses in five states, he has two master's degrees from Princeton University. His professional career includes positions with Grumman Aerospace and the Association of American Railroads. In 1981, he became director of research and development for two major railroad track supply companies, Pandrol Inc. and Speno Rail Services Inc. His expertise includes rail fasteners, ballast and subgrades. Zarembski originated the concept of proactive rail grinding to maintain conformal wheel rail contact, which significantly reduces rail and wheel wear, saving countless dollars. He is a leading track research expert and won the Rail Transportation Award in 1992. He has been a consultant to the World Bank and the United Nations on railroad matters. Ph.D. (1975), Princeton University.

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