Professor Emeritus of Distance Education, Athabasca University, Canada

Professor of Learning Technology and Communication, The Open University

Professor of Instructional Design and Technology, Virginia Tech

Professor, University at Albany, School of Education, Educational Theory and Practice

Assistant Professor of English Teacher Education at Universitas Teknokrat Indonesia

Professor, IET, The Open University

Professor emeritus, Syracuse University; adjunct professor, LeMoyne College

Science Education, East Carolina University

Professor of Distance Education, Indira Gandhi National Open University

Professor, University of California-Irvine