1. Sr. Scientific Officer, Inst. of Hydro., Wallingford, Oxon, United Kingdom
2. Assoc. Dean, Coll. of Engrg., and Prof. of Civ. Engrg., Colorado State Univ., Fort Collins, Colo.
3. Assoc. Prof. of Civ. Engrg., Colorado State Univ., Fort Collins, Colo.