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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.
The values for Nature journals lie well above the expected ca. 1:1 linear dependence because those journals contain a significant fraction of editorials. CiteScore was designed to compete with the two-year JCR impact factor, which is currently the most widely used journal metric. [7] [8] Their main differences are as follows: [9]
While some of the principles for avoiding famines had been laid out in the first book of the Bible, [23] they were not always understood. Historical hunger relief efforts were often largely left to religious organizations and individual kindness. Even up to early modern times, political leaders often reacted to famine with bewilderment and ...
The simplest journal-level metric is the journal impact factor, the average number of citations that articles published by a journal in the previous two years have received in the current year, as calculated by Clarivate. Other companies report similar metrics, such as the CiteScore, based on Scopus.
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.
The American Political Science Review (APSR) is a quarterly peer-reviewed academic journal covering all areas of political science. It is an official journal of the American Political Science Association and is published on their behalf by Cambridge University Press. APSR was established in 1906 and is the flagship journal in political science ...
Perspectives on Politics is a quarterly peer-reviewed academic journal covering political science. It was established in 2003 and is published by Cambridge University Press on behalf of the American Political Science Association. The editors-in-chief are Ana Arjona and Wendy Pearlman (Northwestern University).
The impact factor (IF) or journal impact factor (JIF) of an academic journal is a measure reflecting the yearly average number of citations to recent articles published in that journal. It is frequently used as a proxy for the relative importance of a journal within its field; journals with higher impact factors are often deemed to be more ...