Professor of MIS, University of Minnesota 1961-2004

Simon Fraser University

University Professor, University of Pittsburgh

University of Georgia

The University of Jordan - Professor of Management Information Systems

East Carolina University

William S. Lee Distinguished Professor in Management, Clemson University

University of Nevada Las Vegas

Professor of Business School, Sungkyunkwan University

Professor at Universidad Politécnica de Madrid (RoR:03n6nwv02), Madrid, SPAIN