David C HaySince the early 1980s, David Hay has been a pioneer in the use of process and data models to support strategic planning, requirements analysis and system design. He has developed enterprise models for many industries, including, among others, pharmacutical research, oil refining and production, film and television, and nuclear energy. In each case, he found the relatively simple structures hidden in formidably complex situations. In addition to being a frequent speaker at international conferences, Mr. Hay has published several books and numerous articles. Read More Read Less