1. Assistant Professor, Dept. of Engineering Technology, Univ. of Houston, Houston, TX 77204-4020.
2. Associate Director, CII, Univ. of Texas at Austin, Austin, TX 78759-5316.
3. Joe C. Walter Jr. Chair Emeritus in Engineering, Dept. of Civil Engineering, Univ. of Texas at Austin, Austin, TX 78712-0276.