1. PhD Student, Lab. of Hydraulics, Hydrol. and Glaciology (VAW), Fed. Inst. of Technol. (ETH), CH-8092 Zurich, Switzerland.
2. Sr. Lect. in Fluid Mech., River and Coast. Hydr. and Envir. Engrg., Dept. of Civ. Engrg., Univ. of Queensland, Brisbane QLD 4072, Australia.
3. Lect., Technical Univ. of Lisbon, IST, Dept. of Civ. Engrg., Lisbon 1096, Portugal.
4. Prof., Dept. of Civ. Engrg., Nihon Univ., Coll. of Sci. and Tech., Kanda Surugadai, 1-8 Chiyoda-ku, Tokyo 101-8308, Japan.
5. Asst. Prof., Dept. of Civ. Engrg., Nihon Univ., Coll. of Sci. and Tech., Tokyo, Japan.