1. Department of Management Science, Universidad del Azuay, Av. 24 de Mayo 7-77 y Hernán Malo, Cuenca, Ecuador
2. Department of Agricultural and Biological Engineering, College of Agricultural and Life Sciences, University of Florida, Gainesville, FL, 32611, USA
3. Food and Resource Economics Department, College of Agricultural and Life Sciences, University of Florida, Gainesville, FL, 32611, USA