"TREC 2007 Legal Track Interactive Task: A report from the LIU team". Presented at the TREC 2007 Conference Legal Track Workshop, Gaithersburg, MD, November 6, 2007.

"Downloads vs. citations in economics: Relationships, contributing factors & beyond". Presented at the 11th International Society for Scientometrics and Informetrics Conference, Madrid, Spain. June 26, 2007.

"Search beyond Google". Presentation given at the Long Island University ASIS&T Student Chapter event. February 21, 2007.

"Role of librarians in the digital age". Invited speech at "Changing Role of Librarians", the 35^th Annual Continuing Education Conference, Academic and Special Libraries Division, Nassau County Library Association, Nassau Community College, New York<, May 23, 2006.

"Curricula of LIS programs in the USA: A content analysis". Presented at the Asia-Pacific Conference on Library & Information Education & Practice (A-LIEP), Singapore, April 3-6, 2006.

"Current awareness service of the RePEc digital library: Progress, performance and potentials" Presented at the CAS Symposium on the Sustainable Development & Innovation of Libraries. Beijing, China, December 22, 2003.

"Why are sitations (hyperlinks) made?" Presented at the 9th International Conference on Scientometrics and Informetrics, Beijing, China. August28, 2003.

"Electronic books: Viewpoints from users and potential users". Presented at the Annual Meeting of the American Society for Information Science, Philadelphia, November 20, 2002.

"Emerging generations of Web retrieval tools". Presented at InfoToday 2002, New York, May 15, 2002.

"Library and Information Science Schools in Canada and USA: A Webometric Perspective". Co-authored with Shaoyi He and Mike Thelwall. Presented at the ALISE (Association for Library and Information Science Education) Conference, New Orleans, January 16, 2002.

"A Webometric analysis of the ALA accredited LIS schools' Websites" .  Presented at the 8th International Conference on Scientometrics and Informetrics, Sydney, Australia, July 20, 2001.

“E-books and your library: Promises and issues”. Invited speech, given at the 30th Annual Continuing Education Conference, Academic and Special Libraries Division, Nassau County Library Association. April 27, 2001.

“A citation analysis of Belver Griffith’s work”. Presented at the 2nd International Symposium on Quantitative Evaluation of Research Performances and 6th National Conference on Scientometrics and Informetrics, Shanghai, China. October 24, 2000.

"Research in image indexing and retrieval: A scientometric study". Talk given at the Doctoral Colloquium of Palmer School of Library & Information Science, Long Island University, March 9, 2000.

"Electronic journals versus printed journals: An evaluation framework". Co-presented with Aditi Bandyopadhyay at the 20th National Online Meeting, New York, May 19, 1999.

"Hyperlinks as index terms: Exhaustivity, specificity and beyond". Co-presented with Shaoyi He at the Annual Meeting of the American Society for Information Science, Pittsburgh, October 29, 1998.

"Search capabilities of Web-based search engines". Presented at the 3rd ACM (Association for Computing Machinery) Conference on Digital Libraries 1998, Pittsburgh, June 25, 1998.

"Searching and evaluating networked resources on international education". Invited talk, given at the Tenth Biennial Seminar on International Education, the Institute of International Education, New York, May 18, 1998.

"Internet search services vs. online database services". Presented at the 19th National Online Meeting, New York, May 13, 1998.

"Hyperlinks: How well do they represent the intellectual content of digital collections?". Presented at the Annual Meeting of the American Society for Information Science, Washington, DC, November 5, 1997.

"Internet search tools: What can they offer to users?". Presented at the 18th National Online Meeting, New York, May 15, 1997.

"Search engines for the World Wide Web: A comparative study and evaluation methodology".  Presented at the Annual Meeting of the American Society for Information Science, Baltimore, MD, October 23, 1996.

"Seamless networking in China: Progress, problems, and perspectives". Co-presented with Huijie Chen at the Annual Meeting of the American Society for Information Science, Alexandria, VA, October 19, 1994.

"Internet and digital libraries: Their implications for developing countries". Presented at the 4th Beijing International Symposium on Computer-based Information Management, Beijing, China, October 14-18, 1994.

"E-mail in scientific communication". Presented at the 15th National Online Meeting, New York, May 12, 1994.