ARTHUR P. BORESI, PhD, is Professor Emeritus in the Department of Civil andArchitectural Engineering at the University of Wyoming in Laramie. He is the coauthor of a number of books, including Statics and Dynamics, Approximate Solution Methods in Engineering Mechanics, and Advanced Mechanics of Materials (Wiley). KEN P. CHONG, PhD, PE, is Director of the Mechanics and Materials Program at the National Science Foundation (NSF) in Arlington, Virginia. He is the author of books that include Intelligent Structures, Mechanics of Oil Shale, and Materials for the New Millennium.