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The QS World University Rankings are a ranking of the world's top universities produced by Quacquarelli Symonds published annually since 2004. In 2024, they ranked 1500 universities, with the Massachusetts Institute of Technology, Imperial College London, University of Oxford, Harvard University and University of Cambridge taking the top 5 spots. [15]
The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as indexed by Clarivate's Web of Science.
In any given year, the CiteScore of a journal is the number of citations, received in that year and in previous three years, for documents published in the journal during the total period (four years), divided by the total number of published documents (articles, reviews, conference papers, book chapters, and data papers) in the journal during the same four-year period: [3]
While these journals still did not receive an impact factor until the next year, they did contribute citations to the calculation of other journals' impact factors. [ 4 ] [ 5 ] In July 2022, Clarivate announced that journals in the ESCI obtain an impact factor effective from JCR Year 2022 first released in June 2023.
In a study assessing an increasingly-diversified array of publishers and their service to the academic community, Janice S. Lewis concluded that college and university librarians ranked university presses higher and commercial publishers lower than did members of the American Political Science Association. [4]
The impact factor relates to a specific time period; it is possible to calculate it for any desired period. For example, the JCR also includes a five-year impact factor, which is calculated by dividing the number of citations to the journal in a given year by the number of articles published in that journal in the previous five years. [14] [15]
The journal is abstracted and indexed in Scopus, Social Sciences Citation Index, America: History and Life, Academic Search Premier, FRANCIS, PASCAL, EBSCO Education Source, Educational research abstracts (ERA), Information Science and Technology Abstracts, Library and Information Science Abstracts, Library Literature and Information Science, and MLA - Modern Language Association Database.
Impact factor. 1.220 (2019) ... Annals of the Royal College of Surgeons of England is a medical journal published eight ... This page was last edited on 19 January ...