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Visiting Profesor, Faculty of Information Science, University of Bergen, Berge, Norway
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Visiting Faculty, National Institute of Education, Nanyang Technological University, Singapore, February, 1999.
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National Science Foundation Site Visit Team, Greenfield Coalition, Detroit, MI, October, 1998
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Organizing Committee, International Conference on Computers in Education (Asian), 1995 - present
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Instructional Designer, (National Distance Education Project), University of Brasilia, Brasil. October, 1996, September, 1998
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Editorial Advisory Board, Intelligent Tutoring Media, 1995-6
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Invited Participant, NSF Educational Technology Workshop, Vienna, VA, September 29-October 2, 1995.
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Conference Chair, International Conference on Computers in Education, Singapore, December, 1995
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Co-Director, NATO Advanced Study Institute, Conceptual Models for Designing Hypermedia, Heriot-Watt University, Edinburgh, Scotland, August 14-22, 1994.
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Advisory Board, Ed-Tech Review: International Forum on Educational Technology Issues and Applications (published by the Association for the Advancement of Computing in Education, 1993-
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Editorial Board, Association for Learning Technology Journal (published in U.K.), 1993-
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Invited Member, International Federation for Information Processing, Archamps, France, September, 1993
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Scientific Committee, International Open Workshop on Knowledge Acquisition, Representation, and Processing, Rzeszow University of Technology and the Polish Academy of Sciences, May, 1993
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Program Evaluator, Universiti Sains Malaysia, Pulua Penang, Malaysia, March, 1993
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Program Committee, Educational Media, International Conference, Orlando, June, 1993
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Faculty, Interuniversitair Centrum voor Onderwikjsevaluatie, Rijksuniversiteit Groningen en Universiteit Twente, Summer School, August 27-29, 1992.
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Editor, Journal of Educational Multimedia and Hypermedia, 1991 --
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Program Committee, 4th International Conference on Computers and Learning, June 17-20, 1992, Acadia University, Nova Scotia
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Co-Director, NATO Advanced Research Workshop, Constructivistic Learning Environments, Leuven, Belgium, May 15-18, 1991.
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Member, Board of Directors, Colorado Institute for Artificial Intelligence, 1990-91
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Director, NATO Advanced Research Workshop, "Cognitive Tools for Learning", Twente University, Enschede, NL, July 4-10, 1990
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Editorial Board: Educational Technology: Research and Development, 1989-1993
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Editorial Consultant: Educational Technology: Research & Development, 1988 -
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Director, NATO Advanced Research Workshop, "Designing Hypertext for Learning", Tubingen, FRG, July 3-7, 1989.
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Contributing Editor, Educational Technology magazine, 1988-present
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Planning Task Force, Professional Trainer Series, American Society for Training and Development, Rocky Mountain Chapter.
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Educational Research Consultant/Coordinator, IBM Computer Assisted Instruction Project, University of North Carolina at Chapel Hill, November, 1985-1986
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Instructor, Study Skills and Strategies Course, Office of Orientation, University of North Carolina at Greensboro, 1984-5
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Editorial Consultant, Educational Communications and Technology Journal, 1984 - 1988
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Editorial Board, International Journal of Instructional Media, 1983- present
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Reviewer, Educational Media Products, Educational Technology magazine
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Newsletter Editor, SIG/Nonprint Media, American Society for Information Science, 1978
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Instructional Designer, Undergraduate Teacher Media Preparation Project, Educational Media Department, Temple University, 1975-76
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Television Production Technician, Cameraman, Floor Manager, Lighting Director, Teaching Resources Center, University of Delaware, 1966 - 1969
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Business Manager, Producer, Announcer, WHEN Radio Station, University of Delaware, 1967 - 1969