1. Professor and Chair, Dept. of Civil and Environmental Engineering and Geodetic Sciences, 470 Hitchcock Hall, 2070 Neil Ave., Columbus, OH 43210.
2. Professor, Dept. of Aerospace Engineering, Applied Mechanics, and Aviation, The Ohio State Univ., Columbus, OH 43210.
3. Assistant Professor, Dept. of Architectural Engineering, Semyung Univ., Jecheon, Chungbuk 390-711, Korea.
4. Graduate Research Associate, School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0355.