• 1967-2000  Professor of the Department of East Asian Languages, University of California, Berkeley
• 1998-2000  D.H. Chen Distinguished Professor of Buddhist Studies, University of California, Berkeley
• 2004-2006  President, University of the West
• 1997-present  Director of Electronic Cultural Atlas Initiative, Information School, University of California, Berkeley

• Prajnaparamita
• Early Chan in China and Tibet the history and interpretation of Buddhism in Korea, China, Mongolia, Tibet, and Thailand
• The application of new technology to the study of Buddhist texts and traditions

Selected Publications:

• 'An Early Mahayana Sermon about the Body of the Buddha and the making of Images' Artibus Asiae Vol. 36 No. 4(1974)
• 'The Oldest Mahayana Sutra: Its Significance for the Study of Buddhist Development' Eastern Buddhist New Series Vol. VIII No. 1. May(1975)
• 'Introduction of Buddhism to Korea and Subsequent Development' in Charles Prebish, ed. Buddhism: A Modern Perspective (University Park, PA: Pennsylvania State University Press, 1975)
• Lewis R. Lancaster and Sungbae ParkThe Korean Buddhist Canon: A Descriptive Catalogue (University of California Press: Berkeley, 1979)(Digital Reprint, by Charles Muller Japan, 2001)
• 'The Dunhuang Manuscripts: The Current State of Research' Dunhuang Manuscript Forgeries, edited by Susan Whitfield, British Library Studies in Conservation Science, Vol. 3, London(2002)
• With David J. Bodenhamer, 'The Electronic Cultural Atlas Initiative and the North American Religion Atlas' Past Time, Past Place: GIS for History, edited by Anne Kelly Knowles (ESRI Press: Redlands, CA, 2002)
• 'Pattern Recognition and Analysis in the Chinese Buddhist Canon: A Study of ‘Original Enlightenment' Pacific World Third Series, vol 60(2010)