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Scientific Reports is a peer-reviewed open-access scientific mega journal published by Nature Portfolio, covering all areas of the natural sciences. The journal was established in 2011. [ 1 ] The journal states that their aim is to assess solely the scientific validity of a submitted paper, rather than its perceived importance, significance, or ...
Journal Citation Reports (JCR) is an annual publication by Clarivate. [1] It has been integrated with the Web of Science and is accessed from the Web of Science Core Collection. It provides information about academic journals in the natural and social sciences, including impact factors. JCR was originally published as a part of the Science ...
The impact factor was devised by Eugene Garfield, the founder of the Institute for Scientific Information (ISI) in Philadelphia. Impact factors began to be calculated yearly starting from 1975 for journals listed in the Journal Citation Reports (JCR).
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]
Tausch, A. (2011). On the Global Impact of Selected Social-Policy Publishers in More Than 100 Countries. Journal of Scholarly Publishing, 42(4), 476–513. Tausch, A. (2018). The Market Power of Global Scientific Publishing Companies in the Age of Globalization: An Analysis Based on the OCLC Worldcat (June 16, 2018).
SCImago Journal Rank is a measure of the scientific influence of scholarly journals based on citation data.
According to the publisher, the index includes "peer-reviewed publications of regional importance and in emerging scientific fields". [1] The ESCI is accessible through the Web of Science, together with other Clarivate indexes. [2] [3] As of June 2021, all journals indexed in ESCI are also included in the Journal Citation Reports.
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]