1. Professor, School of Engineering, Univ. of Alaska–Anchorage, 3211 Providence Dr., Anchorage, Alaska 99508. E-mail: afhl@uaa.alaska.edu
2. Professor, School of Engineering, Univ. of Alaska–Anchorage, 3211 Providence Dr., Anchorage, Alaska 99508. E-mail: afhkz@uaa.alaska.edu
3. GV Jones and Associates, Inc., 1200 E 76th Ave., Suite 1207, Anchorage, Alaska 99518. E-mail: dan_s@gvjones.com