Researcher Impact

Citation analysis is key to identifying highly valued research and plays a role in rating the impact of both journals and researchers. The impact factor (IF) of a academic journal is determined by the average number of citations per articles published in the two preceding years.  This information may be helpful in deciding where to target research.


Citation counts allow scholars to rank individual works and to calculate their own impact as researchers (h-index).  H-index or Hirsch index is a measurement based on both the number of publications and the number of citations per publication. An h-index of 10 means that an individual scholar has published ten works that have been cited at least ten times.  The h-index grows as citations accumulate.

 As a single measure of impact, h-index has many known limitations, and a number of supplemental measures have been developed.  As a comparative measure, it may work best for researchers in the same discipline who are at the same stage of their academic lives.

 UTSA faculty have access to two tools for measuring research production and impact.

Thomson ISI Web of Science

Indexing and abstracting service covering arts, humanities, sciences, and social sciences.  Researchers can obtain a Researcher ID and use it to:

  • View/track publication history in ISI-listed publications
  • Create citation reports
  • Calculate h-index

 Notable features

  • Citations can be easily copied into a researcher’s ORCID profile


  • Web of Science core collection: over 8400 high-impact journals indexed by ISI in
    • Science Citation Index Expanded (1900-present)
    • Social Sciences Citation Index (1900-present)
    • Arts & Humanities Citation Index (1975-present)
    • Conference Proceedings Citation Index- Science (1990-present)
    • Conference Proceedings Citation Index- Social Science & Humanities (1990-present)
  • Medline: over 4800 leading journals in life sciences from the U.S. and abroad (1950-present)
  • SciELO citation index: scholarly literature published in leading open access journals from Latin America, Portugal, Spain, and South Africa (1997-present)

Google Scholar

Indexes books and book chapters, conference proceedings, government reports, theses and dissertations, working papers, pre-prints, and journal articles, including journals not listed in Web of Science.  Users can set up a scholar profile to manage citations.  My Citations allows users to:

  • Capture publication history and citations in Google Scholar
  • Calculate h-index

Alternatively, researchers can use freeware such as Publish or Perish (PoP), to collect Google Scholar citations.  PoP offers search refinements and other features not available in Google.

Google Scholar coverage

  • Google not open about its data sources, but independent studies show strengths in Social Sciences, particularly Education, Economics, Sociology and Psychology
  • Coverage in hard sciences is reportedly low, compared to ISI
  • Coverage of pre-1990 publications may not be as good as ISI and Scopus


  • My Citations and PoP can both export citations, but neither integrates with ORCID, meaning citations must be manually entered in an ORCID profile.
  • Lower data quality, including (reportedly) incorrect identification of authors