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. As a journal-level metric, it is … Zobacz więcej 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 Zobacz więcej In any given year, the two-year journal impact factor is the ratio between the number of citations received in that year for publications in that journal that were published in the two preceding years and the total number of "citable items" published in … Zobacz więcej Numerous critiques have been made regarding the use of impact factors, both in terms of its statistical validity and also of its implications for how science is carried out and … Zobacz więcej Some related metrics, also calculated and published by the same organization, include: • Cited half-life: the median age of the articles that … Zobacz więcej While originally invented as a tool to help university librarians to decide which journals to purchase, the impact factor soon became used as a measure for judging academic success. This use of impact factors was summarised by Hoeffel in 1998: Zobacz więcej Given the growing criticism and its widespread usage as a means of research assessment, organisations and institutions have begun to take steps to move away from the … Zobacz więcej • Science portal • Author impact factor • Citation impact • Goodhart's law Zobacz więcej WitrynaThe Impact of COVID-19 on Education - OECD
Impact
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