1. Associate Professor, Construction Engineering and Management Program, Dept. of Civil and Environmental Engineering, Univ. of Cincinnati, P.O. Box 210071, Cincinnati, OH 45221-0071.
2. Graduate Student, Construction Engineering and Management Program, Dept. of Civil and Environmental Engineering, Univ. of Cincinnati, Cincinnati, OH 45221-0071.
3. Associate Professor, Industrial and Manufacturing Engineering Program, Dept. of Mechanical, Industrial and Nuclear Engineering, 633 Rhodes, Univ. of Cincinnati, Cincinnati, OH 45221-0072.
4. Professor Emeritus, Construction Engineering and Management Program, Dept. of Civil and Environmental Engineering, Univ. of Cincinnati, P.O. Box 210071, Cincinnati, OH 45221-0071.