CENTER OF EXCELLENCE IN SPACE DATA AND INFORMATION SCIENCES

Dr. Yelena Yesha

Director of the Center of Excellence in Space Data and Information Sciences (CESDIS),and tenured Professor in the Department of Computer Science and Electrical Engineering at the University of Maryland, Baltimore County and also holds a joint appointment with the University of Maryland's Institute for Advanced Computer Studies (UMIACS) in College Park.

Research Interests and Professional Activities

Distributed databases, distributed systems, digital libraries, electronic commerce, and performance modeling.

• New Initiatives / Projects / Conferences
• Professional Activities and Honors
• Applied Information Technologies , Acting Branch Head

Education and Career History

• Education and Career History

Professional Service

Journal Participation

• International Journal on Digital Libraries, Editor-in-Chief
• The Journal of Very Large Databases, Editor
• International Journal on Intelligent and Cooperative Information Systems, Guest Editor
• Journal of Systems and Software, Guest Editor
• IEEE Transactions on Knowledge and Data Engineering, Guest Editor

Selected Publications

Authored more than 50 papers and edited seven volumes in the areas of distributed databases, distributed systems, and performance modeling.

Book Chapters

• Digital Libraries and Electronic Commerce (with Nabil Adam and Brad Fordham), in "Digital Libraries: Current Issues'', Nabil Adam, Bharat Bhargava and Yelena Yesha editors, Lecture Notes in Computer Science, appeared in May, 1995, publisher: Springer Verlag.
• Electronic Commerce: An Overview (with Nabil Adam), in ``Electronic Commerce'', Nabil Adam and Yelena Yesha editors, Lecture Notes in Computer Science, January, 1996, publisher: Springler Verlag.

Selected Papers in Refereed Journals

• Algorithms for a Core and k-Tree of a Tree (with S. Peng and A.B. Stephens), Journal of Algorithms, Volume 15, No. 3, pp. 143 - 159
• Extensions to the C Programming Language for Enhanced Failure Detection (with David Flater and E. Park), Software Practice and Experience, Volume 23(6), pp. 617-628, June 1993.
• Optimal Allocation for Partially Replicated Database Systems on Ring Networks (with Brooke Stephens and Keith Humenik), IEEE Transactions on Knowledge and Data Engineering, Vol. 6, No. 6, pp. 975 - 982, December, 1994.
• Probabilistic Analysis of Transaction Blocking Under Arbitrary Data Access Distribution in Database Systems (with Mukesh Singhal and Mike Liu), Information Sciences: An International Journal, Vol. 78, No. 3-4, pp. 161-187, May 1994.
• An Efficient Management of Read-Only Data in a Distributed Information System (with David Flater), Journal of Intelligent and Cooperative Information Systems, Vol. 2, No. 3, pp. 319 - 334, November 1993.
• A Lower Bound on the Probability of Conflict Under Nonuniform Access in Database Systems (with K. Humenik, P. Matthews and A.B. Stephens), Algorithmica, Vol. 13, No. 3, pp. 283 - 300, March 1995.
• Optimal Allocation for Partially Replicated Database Systems on Tree-based Networks (with Brooke Stephens and Keith Humenik), Applied Mathematics Letters, Vol. 8, No. 1, pp. 71-76, January 1995.
• Managing Read-Only Data on Arbitrary Networks with Fully Distributed Caching (with David Flater), International Journal on Intelligent and Cooperative Information Systems. Vol. 3, No. 3, pp. 279-292, 1994.
• On a Unified Framework fo rthe Evaluatin of Distributed Quorum Attainment Protocls (with Daniel Menasce') and Konstantinos Kalpakis), IEEE Transactions on Software Engineering, Vol. 20, No. 11, pp. 868-884, November 1994.
• Minimizing Message Complexity in Partially Replicated Databases on Hypercube Networks (with Keith Humenik, Peter Matthews and Brooke Stephens), accepted for publication in Networks.
• ALIBI: A Novel Approach to Resource Discovery (with David Flater), accepted for publication in Internet Research, 30 pages.

Selected Papers in Refereed Conference Proceedings

• An Approximate Performance Model of a Unitree Mass Storage System (with Milt Halem, Daniel Menasce and Odysseas Pentakalos), in the Proceedings of the Fourteenth IEEE Symposium on Mass Storage Systems, Monterey, California, September 11-14,1995.
• An Analytic Model of Hierarchical Mass Storage Systems with Network-Attached Devices (with Odysseas Pentakalos and Daniel Menasce), to appear in ACM SIGMETRICS, Philadelphia, PA, May, 1996.

Invited Papers in Conference Proceedings

• Issues for Bringing Digital Libraries into Public Use, (with David Flater), Proceedings of the Third NASA GSFC Conference on Mass Storage Systems and Technologies, pp. 389-392, College Park, Maryland, October 19-21, 1993.

Edited Volumes

• Information and Knowledge Management: Expanding the Definition of "Database" (with Timothy Finin and Charles Nicholas), Lecture Notes in Computer Science, Volume 752, Springer Verlag, 1993.
• Digital Libraries: Current Issues (with Nabil Adam and Bharat Bhargava), to appear in March, 1995, Lecture Notes in Computer Science, Springer Verlag.
• Electronic Commerce (with Nabil Adam), in preparation, accepted for publication, Lecture Notes in Computer Science, Springer Verlag.

Edited Proceedings

• Proceedings of the First ISMM International Conference on Information and Knowledge Management, Baltimore Maryland, 668 pages, November 8 - 11, 1992.
• Proceedings of the Second International Conference on Information and Knowledge Management (with Nabil Adam and Timothy Finin), Washington, DC, 728 pages, ACM Press, November 1 - 5, 1994.
• Proceedings of the Third International Conference on Information and Knowledge Management (with Nabil Adam and Bharat Bhargava), Gaithersburg, Maryland, 463 pages, ACM Press, November 29 - December 2, 1994.

Author: The CESDIS Administrative Branch / CESDIS An Institute of Universities Space Research Association, NASA Goddard Space Flight Center, Greenbelt, Maryland.
Last revised: 25 JAN 96 moc