1. Prof. of Civ. Engrg., Dept. of Civ. Engrg., State Univ. of New York at Buffalo, Buffalo, N.Y.
2. Assoc. Prof., School of Civ. and Environmental Engrg., Comell Univ., Ithaca, N.Y.
3. Assoc. Prof., School of Civ. and Environmental Engrg., Cornell Univ., Ithaca, N.Y.
4. Asst. Prof., Dept. of Civ. Engrg., State Univ. of New York at Buffalo, Buffalo, N.Y.