1. Assistant Professor, Food and Resource Economics Department; University of Florida; 2725 S Binion Rd Apopka FL 32703-8504
2. Assistant Professor, Department of Food and Resource Economics, College of Life Sciences and Biotechnology; Korea University; Anam-Dong, Seongbuk-Gu Seoul 136-701 Republic of Korea
3. Assistant Professor; Jiangxi University of Finance and Economics; 168 East Shuanggang Road Nanchang China
4. Professor, Department of Agricultural and Biological Engineering; University of Florida; 205 Frazier Rogers Hall, P.O. Box 110570 Gainesville FL 32611-0570