1. Assistant Professor, Dept. of Mechanical Engineering, Univ. of Texas at El Paso, El Paso, TX 79968 (corresponding author).
2. Professor, Dept. of Civil and Environmental Engineering, Louisiana State Univ., Baton Rouge, LA 80703.
3. Professor, Dept. of Naval Architecture and Ocean Engineering, South China Univ. of Technology, Guangzhou 510641, P.R. China.
4. Assistant Professor, Dept. of Mechanical Engineering, Univ. of Texas at San Antonio, San Antonio, TX 78259.