Information services provider Thomson Reuters, US, has announced the release of the 2009 Journal Citation Reports (JCR). JCR claims to be the most widely used tool for assessing the world's leading journals. The metrics it offers, including Journal Impact Factor, empower users to objectively evaluate a journal's performance and its influence on research globally.
Featuring over 9,100 of the world's most highly cited peer-reviewed publications, the 2009 JCR includes 861 journals added through the Thomson Reuters Regional Content Expansion. This multi-year initiative aims to enrich the collection of regionally important and influential international journals represented in JCR and other Thomson Reuters services.
Included in 2009's release are features that help users visualise and evaluate the journal data in context, including Five-Year Impact Factor, which helps users evaluate journals in the context of their specific field; Eigenfactor Metrics that assess a journal's prestige and citation influence by considering scholarly literature as a network of journal-to-journal relationships; Rank-in-Category Tables, a unique visualisation tool illustrating at a glance a journal's performance in the context of multiple categories; and Journal 'Self-Citations,' an analysis of a journal's self citations and their effect on the Journal Impact Factor calculation.
Used by librarians, publishers, authors, researchers and bibliometricians alike, JCR offers a systematic, objective means to critically evaluate the world's leading journals with quantifiable, statistical information based on citation data. The 2009 release analyses the performance of the world's most highly cited, peer-reviewed journals from 2,200 publishers in 78 countries.
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