Stephan D. Murphy is Engineering Manager for TEXTRON Inc., Danville, Pennsylvania, where he is responsible for CAD/CAM, automation projects, and manufacturing engineering of blades and vanes for aircraft gas turbines. Mr. Murphy is the author of numerous articles and reports on manufacturing technology and holds two U.S. patents. He is a member of the Institute of Electrical and Electronics Engineers and American Association for the Advancement of Science. Mr. Murphy received the B.S. degree in electrical engineering from Case Western Reserve University, Cleveland, Ohio.