1. Ph.D. Candidate, State Univ. of New York at Buffalo, Buffalo, NY 14260.
2. Ph.D. Candidate, Rice Univ., Houston, TX 77005.
3. Professor, State Univ. of New York at Buffalo, Buffalo, NY 14260.
4. Professor, Rice Univ., Houston, TX 77005 (corresponding author).
5. President, Taylor Devices Inc., 90 Taylor Dr., North Tonawanda, NY 14120.