Warren M. Rohsenow is a former professor of mechanical engineering and director of the Heat Transfer Laboratory at MIT. Dr. Rohsenow received the Max Jacob Memorial Award for his work in heat transfer. James P. Hartnett is director of the Energy Resource Center and was professor of mechanical engineering at the University of Illinois in Chicago. Dr. Hartnett was the recipient of the ASME Memorial Award for his work in this field. Young I. Cho is professor of mechanical engineering in the Department of Mechanical Engineering and Mechanics at Drexel University, Philadelphia, Pennsylvania. Dr. Cho was awarded the 1995 University Research Award at Drexel University.