Professor of Operations Management, Adelphi University

School of Business, Costa Rica Institute of Technology (ITCR)

Universitat Politècnica de Catalunya (UPC)

International Food Policy Research Institute

Distinguished Professor of Economics, Syracuse University

Professor of Econometrics, University of Cagliari and CRENoS

School of Management, University of Texas at Dallas

Hong Kong Polytechnic University

Professor of Economics, Technische Universität Darmstadt

Professor of Econometrics, University of Las Palmas de Gran Canaria (Spain)