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Science is the peer-reviewed academic journal of the American Association for the Advancement of Science [A 2] [1] (AAAS) and one of the world's top academic journals. [2] It was first published in 1880, is currently circulated weekly and has a subscriber base of around 130,000.
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 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.
Cell is a peer-reviewed scientific journal publishing research papers across a broad range of disciplines within the life sciences. [1] Areas covered include molecular biology, cell biology, systems biology, stem cells, developmental biology, genetics and genomics, proteomics, cancer research, immunology, neuroscience, structural biology, microbiology, virology, physiology, biophysics, and ...
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.
According to the Journal Citation Reports, the journal has a 2023 impact factor of 6.4. [14] The journal opposes the over-reliance on the impact factor by the scientific community. [ 15 ] In October 2024, Web of Science has put its indexation of eLife in Science Citation Index Expanded on hold, citing the journal's recently-adopted publishing ...
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]
The Science Citation Index Expanded (previously titled Science Citation Index) is a citation index originally produced by the Institute for Scientific Information (ISI) and created by Eugene Garfield.