1. Professor Emeritus, Dept. of Civil and Coastal Engineering, 365 Weil Hall, Univ. of Florida, Gainesville, FL 32611 (corresponding author).
2. Visiting Research Scholar, Dept. of Civil and Coastal Engineering, 365 Weil Hall, Univ. of Florida, Gainesville, FL 32611.
3. Graduate Research Assistant, Dept. of Agricultural and Biological Engineering, P.O. Box 110510, Univ. of Florida, Gainesville, FL 32611.
4. Research Assistant, Dept. of Civil Engineering, Yildiz Technical Univ., Esenler, Istanbul 34210, Turkey.