GENICHI TAGUCHI, DSc, is Executive Director of the American Supplier Institute (ASI). Dr. Taguchi, an international authority in quality engineering, was awarded the prestigious Deming Prize in 1960 and the Willard F. Rockwell Medal in 1986. He was inducted into the World Level of the Hall of Fame for Engineering, Science, and Technology in 1998, and the Automotive Hall of Fame in 1997. He authored or coauthored forty books and more than 400 technical articles in leading journals.SUBIR CHOWDHURY, DEng, is Chairman and CEO of ASI Consulting Group. He is one of the world's foremost authorities in helping leaders achieve positive and measurable results in business process improvement. He has been awarded the Willard F. Rockwell Medal and was inducted into the World Level of the Hall of Fame for Engineering, Science, and Technology in 2004. Hailed by the New York Times as the "Leading Quality Expert," he is the author of eleven books, including The Power of Six Sigma, which has sold more than a million copies and has been translated into twenty languages.The late YUIN WU was executive director of ASI. He penned the first English (and Chinese) translations of Taguchi's work, and is credited with conducting the first Taguchi Methods experiments in the United States while working with private industry in California. He was active as a consultant in North America as well as many countries in Europe, South America, and Asia. He was the author of several books and hundreds of technical papers.