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It was retitled Journal of Acquired Immune Deficiency Syndromes and Human Retrovirology (ISSN 1077-9450) in 1995, returning to the title Journal of Acquired Immune Deficiency Syndromes in 1999. [2] [3] It was originally published by Raven Press. [1] The journal was an official publication of the International Retrovirology Association until 2000.
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.
Journal ranking is widely used in academic circles in the evaluation of an academic journal's impact and quality. Journal rankings are intended to reflect the place of a journal within its field, the relative difficulty of being published in that journal, and the prestige associated with it.
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]
In addition to the network-based SJR indicator, the SJR also provides a more direct alternative to the impact factor (IF), in the form of average citations per document in a 2-year period, abbreviated as Cites per Doc. (2y). [7] [8]
Other companies report similar metrics, such as the CiteScore, based on Scopus. However, very high journal impact factor or CiteScore are often based on a small number of very highly cited papers. For instance, most papers in Nature (impact factor 38.1, 2016
Author-level metrics are citation metrics that measure the bibliometric impact of individual authors, researchers, academics, and scholars. Many metrics have been developed that take into account varying numbers of factors (from only considering the total number of citations, to looking at their distribution across papers or journals using statistical or graph-theoretic principles).
The original logotype from the Altmetrics Manifesto. [1]In scholarly and scientific publishing, altmetrics are non-traditional bibliometrics [2] proposed as an alternative [3] or complement [4] to more traditional citation impact metrics, such as impact factor and h-index. [5]