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the number of times articles published in the journal during each of the most recent 10 years were cited by individual specific journals during the year (the twenty journals with the greatest number of citations are given) and several measures derived from these data for a given journal: its impact factor, immediacy index, etc.
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.
Scopus is a scientific abstract and citation database, launched by the academic publisher Elsevier as a competitor to older Web of Science in 2004. [1] The ensuing competition between the two databases has been characterized as "intense" and is considered to significantly benefit their users in terms of continuous improvement in coverage, search/analysis capabilities, but not in price.
Renewable Energy is a monthly peer-reviewed scientific journal covering research on renewable energy, sustainable energy and the energy transition. It is published by Elsevier and the editor-in-chief is Soteris Kalogirou (Cyprus University of Technology). According to the Journal Citation Reports, the journal has a 2021 impact factor of 8.634. [1]
According to Journal Citation Reports, the journal has a 2022 impact factor of 9.4. [1] PNAS is the second most cited scientific journal, with more than 1.9 million cumulative citations from 2008 to 2018. [2] In the past, PNAS has been described variously as "prestigious", [3] [4] "sedate", [5] "renowned" [6] and "high impact". [7]
When science journals were evaluated with a PageRank-based algorithm, however, the Journal of Biological Chemistry ranked first. [7] Using the Eigenfactor metric, the Journal of Biological Chemistry ranked 5th among all ISI-indexed journals in 2010. [8] The impact factor of the journal in 2021 was 5.486. [9]
Author Impact Factor: Author Impact Factor (AIF) is the Impact Factor applied to authors. [5] The AIF of an author in year is the mean number of citations given by papers published in year to papers published by in a period of years before year . Unlike the h-index, AIF is able to capture trends and variations of the impact of the scientific ...
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. [6]