1. Graduate Student, Dept. of Civil, Construction, and Environmental Engineering, North Carolina State Univ., Raleigh, NC 27695-7908.
2. Director, Lean Construction Institute, 101 Alpine Dr., Box 1003, Ketchum, ID 83340-1003.
3. Academy Professor, Dept. of Civil and Mechanical Engineering, United States Military Academy, West Point, NY 10996.
4. Chair, Dept. of System Engineering and Engineering Management, Univ. of North Carolina at Charlotte, NC 28223.
5. Associate Professor, Dept. of Civil, Construction, and Environmental Engineering, North Carolina State Univ., Raleigh, NC 27695-7908 (corresponding author).