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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 Citation Index. Currently, the JCR, as a distinct service, is based on citations compiled from the Science Citation Index Expanded and the Social Sciences Citation Index. [2]
According to the Journal Citation Reports, its 2014 impact factor is 2.600, ranking it 25 out of 86 journals in the category "Health Care Sciences & Services" [1] and 12 out of 70 journals in the category "Health Policy & Services". [2]
The Emerging Sources Citation Index (ESCI) is a citation index produced since 2015 by Thomson Reuters and now by Clarivate. 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 ...
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). ISI was acquired by Thomson Scientific & Healthcare in 1992, [4] and became known as Thomson ISI.
The indexing database covers more than 9,200 notable and significant journals, across 178 disciplines, from 1900 to the present. These are alternatively described as the world's leading journals of science and technology, because of a rigorous selection process. [8] [9] [10]
The candidates are so named based on the citation impact of their published research. Thomson Reuters Citation Laureates was established in 1989. The list pertains to likely Nobel Prize winners in medicine, chemistry, physics, and economics. There appears to be a correlation between high citation rates for a published researcher and the award ...
According to the Journal Citation Reports, the journal had a 2020 impact factor of 9.079, ranking it 18th out of 162 journals in the category "Immunology", [2] 3rd out of 92 journals in the category "Infectious Diseases" [3] and 12th out of 137 journals in the category "Microbiology". [4]
In 2010, a criticism was voiced pointing toward certain deficiencies of the journal impact factor calculation process, based on Thomson Reuters Web of Science, such as: journal citation distributions usually are highly skewed towards established journals; journal impact factor properties are field-specific and can be easily manipulated by ...