Biographical sketch of author

Alan D. Marwick   IBM Research Division, Thomas J. Watson Research Center, P.O. Box 704, Yorktown Heights, New York 10598 (electronic mail: marwick@us.ibm.com). Dr. Marwick received B.Sc. and D.Phil. degrees in physics from the University of Sussex in Britain, then worked on the application of nuclear methods of analysis to research problems in materials science and the effect of radiation on solids, first at the AEA Harwell Laboratory in Britain and then at the Watson Research Center. More recently he has led groups working on on-line access to the scientific literature, digital libraries, information retrieval, natural language processing, and knowledge management. In addition to his technical interests, he works on the practical problems of applied research and technology transfer in an industrial environment. Dr. Marwick currently manages the Knowledge Management Technology Department at the Research Center.