1. Postdoctoral Research Associate, 498 Town Engineering Building, Dept. of Civil, Construction, and Environmental Engineering, Iowa State Univ., Ames, IA 50011.
2. Professor Emeritus, Dept. of Civil Engineering, Univ. of Illinois at Urbana-Champaign, 205 N Mathews NCEL Rm. 1215, Urbana, IL 61801.