1. Asst. Prof., Dept. of Mech. Engrg., Univ. of Toronto Toronto, Canada; formerly, Research Assoc., Inst. of Hydromechanics, Univ. of Karlsruhe, Karlsruhe, Germany
2. Prof. of Civ. Engrg. and Dir., Inst. of Hydromechanics, Univ. of Karlsruhe, Karlsruhe, Germany
3. Grad. Student, School of Civ. Engrg., Georgia Inst. of Tech., Atlanta, Ga.; formerly, Research Asst., Inst. of Hydromechanics, Univ. of Karlsruhe, Karlsruhe, Germany