1. Asst. Prof., Dept. of Civ. and Const. Engrg., Bradley Univ., Peoria IL; formerly, Res. Asst., Dept. of Civ. and Envir. Engrg., Univ. of Houston, Houston, TX.
2. Lect., Dept. of Archit. Engrg., Sungkyunkwan Univ., Suwon, Korea; formerly, Res. Assoc., Dept. of Civ. and Envir. Engrg., Univ. of Houston, Houston, TX.
3. Moores Prof., Dept. of Civ. and Envir. Engrg., Univ. of Houston, Houston, TX.