1. Assoc. Prof., Dept. of Civ. Engrg. and Engrg. Mech., Univ. of Arizona, Tucson, AZ 85721.
2. Asst. Prof., Dept. of Civ. Engrg., United Arab Emirates Univ., Algimi, Alain, UAE.
3. Grad. Res. Asst., Dept. of Civ. Engrg. and Engrg. Mech., Univ. of Arizona, Tucson, AZ 85721.
4. Formerly Grad. Res. Asst., School of Civ. Engrg., Oklahoma State Univ., Stillwater, OK 74078.
5. Regents' Prof. and Sarkeys Distinguished Prof., Dept. of Agric. Engrg., Oklahoma State Univ., Stillwater, OK 74078.