1. Research Postdoctoral Associate, Department of Agricultural Economics and Agribusiness; University of Arkansas; Fayetteville AR 72701.
2. Assistant Professor, Department of Agricultural, Food, and Resource Economics; Michigan State University; East Lansing MI 48824.
3. Professor and Tyson Chair in Food Policy Economics, Department of Agricultural Economics and Agribusiness; University of Arkansas; Fayetteville AR 72701
4. Adjunct Professor, Korea University; Norwegian Institute of Bioeconomy Research, and NBER.
5. Associate Professor, Department of Agricultural Sciences; Alma Mater Studiorum, University of Bologna; 50-40127 Bologna Italy