Tumblr WhatsApp Reddit Viber Messenger Print Qatar WhatsApp Number List E-Mail Post navigation Previous article Post navigation The Impact Factor is a bibliometric indicator devised by Eugene Garfield in Qatar WhatsApp Number List (Garfield, 1955) with the aim of assessing quantitatively and annually the overall contribution that a journal makes to science. To do this, the journal takes into account the citations received by all the articles, Qatar WhatsApp Number List understanding that the citations are direct proof of the scientific contribution of the papers. The Impact Factor is calculated with an easy and intuitive formula; To calculate the Impact Factor of a journal in a given year (for example 2017), the number of citations that the journal in question receives in Qatar WhatsApp Number List.

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for articles published in its two previous years is counted and relativized by the number of works he has published in those two years. The Impact Factor is calculated in the Qatar WhatsApp Number List context of the Web of Science and more specifically to the journals indexed in the Science Citation Index and Social Science Citation Index databases , and only takes into account the citations received by the Qatar WhatsApp Number List population from the databases of the main set ” Core Collection “. That is why it cannot be said that a journal has an impact factor calculated if it does not belong to these databases. Since 1975, the Institute of Scientific Qatar WhatsApp Number List Information (ISI) publishes annually reports on citation of Web of Science journals.

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( Journal Citation Reports ) where the Impact Factor for Qatar WhatsApp Number List each journal is calculated and these are grouped and ordered, using said indicator. , by subject categories, which generates an express ranking for the journals by positions and quartiles for each subject area. Qatar WhatsApp Number List Limitations: It is only calculated for journals indexed in the Science Citation Index and Social Science Citation Index of the Web of Science. It is very sensitive to manipulations such as self-citations, that is, a journal could corrupt its articles by modifying them to obtain more citation, even when other similar indicators: IPP, Scimago Journal Rank, Qatar WhatsApp Number List , H-Index and SNIP Bibliography Garfield, E

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