1. Professor, Dept. of Civil and Environmental Engineering and Wood Materials and Engineering Laboratory, Washington State Univ., Pullman, WA 99164-2910.
2. Assistant Professor, Dept. of Civil and Environmental Engineering, The Univ. of Texas at San Antonio, San Antonio, TX 78249-0668.
3. Associate Professor, Dept. of Engineering Mechanics, Univ. of Nebraska–Lincoln, Lincoln, NE 68588-0526.