Distinguished Professor of Public Administration, American University (Washington, DC)

College of Business, University of Louisville

Manager, HumRRO

Utrecht University - Associate Professor

Yildiz Technical University,Turkey

Professor of Educational Leadership, University of Wisconsin-Madison

Professor of Higher Education Management

Professor of Management, California State University, Fullerton

Professor, University of Thessaly, Department of Business Administration

Universidad de Manizales (Manizales - Colombia)