Guest Professor, Communication, Philosophy, & Technology, Wageningen University

Roy Wilkins Professor of Human Relations and Social Justice, Hubert H. Humphrey School …

Universidad de La Laguna

Institute of Public Goods and Policies (IPP) Spanish National Research Council (CSIC)

Professor of public policy and administration, Pennsylvania State University

Professor, Applied Economics and Management, Cornell University

University of Nebraska Bureau of Business Research

President, Fulbright University Vietnam

The National University of "Ostroh Academy",

University of Georgia (retired)