1. Research Engineer; formerly, Dept. of Civil and Environmental Engineering Lehigh Univ., ATLSS Engineering Research Center, 117 ATLSS Drive, Imbt Labs, Bethlehem, PA 18015.
2. Professor Emeritus, Dept. of Civil and Environmental Engineering, Lehigh Univ., ATLSS Engineering Research Center, 117 ATLSS Drive, Imbt Labs, Bethlehem, PA 18015.