1. Professor and Chair, Dept. of BioResource and Agricultural Engineer, Irrigation Training and Research Center, California Polytechnic State Univ., San Luis Obispo, CA 93407-0253.
2. Controls Specialist, Irrigation Training and Research Center, California Polytechnic State Univ., San Luis Obispo, CA 93407-0253.
3. Irrigation Engineer, Irrigation Training and Research Center, California Polytechnic State Univ., San Luis Obispo, CA 93407-0253.
4. Associate Professor, Dept. of Electrical Engineering, California Polytechnic State Univ., San Luis Obispo, CA 93407-0253.