1. Member, ASCE
2. MS, Dept. of Envir. Engrg., Nat. Cheng-Kung Univ., Tainan, Taiwan, Republic of China.
3. Prof., Dept. of Envir. Engrg., Nat. Cheng-Kung Univ., Tainan, Taiwan, Republic of China.
4. Prof., Dept. of Sys. Engrg., Univ. of Pennsylvania, Philadelphia, PA 19104.