1. Assistant Professor, Depts. of Ocean/Civil and Environmental Engineering, Univ. of Rhode Island, Narragansett, RI 02882. E-mail: baxter@oce.uri.edu
2. University Distinguished Professor, Emeritus, Charles E. Via, Jr., Dept. of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA 24061. E-mail: jkm@vt.edu