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Text of the page (random words):
ited half life the median age of the articles that were cited in journal citation reports each year for example if a journal s half life in 2005 is 5 that means the citations from 2001 to 2005 are half of all the citations from that journal in 2005 and the other half of the citations precede 2001 94 aggregate impact factor for a subject category it is calculated taking into account the number of citations to all journals in the subject category and the number of articles from all the journals in the subject category immediacy index the number of citations the articles in a journal receive in a given year divided by the number of articles published journal citation indicator jci a jif that adjusts for scientific field it is similar to source normalized impact per paper calculated based on the scopus database 95 jci is available for all journals in the web of science core collection wos cc including the ahci esci bci cpci while jif is only available for the scie and ssci however starting in june 2023 jif will also be issued for all journals in the wos cc 96 jif quartile ranking a rank based on the four quartiles within a given subject or topic category 97 jif percentile ranking a percentile rank computed for a particular subject category 98 a given journal may attain a different quartile or percentile in different categories as with the impact factor there are some nuances to this for example clarivate excludes certain article types such as news items correspondence and errata from the denominator 10 99 100 101 other measures of scientific impact edit main article citation metrics further information scientometrics additional journal level metrics are available from other organizations for example citescore is a metric for serial titles in scopus launched in december 2016 by elsevier 102 103 while these metrics apply only to journals there are also author level metrics such as the h index that apply to individual researchers in addition article level metrics measure impact at an article level instead of journal level other more general alternative metrics or altmetrics that include article views downloads or mentions in social media offer a different perspective on research impact concentrating more on immediate social impact in and outside academia 61 104 counterfeit impact factors edit fake impact factors or bogus impact factors are produced by certain companies or individuals 105 according to an article published in the electronic physician these include global impact factor citefactor and universal impact factor 105 jeffrey beall maintained a list of such misleading metrics 106 107 another deceitful practice is reporting alternative impact factors calculated as the average number of citations per article using citation indices other than jcr such as google scholar e g google based journal impact factor or microsoft academic 108 false impact factors are often used by predatory publishers 109 110 consulting journal citation reports master journal list can confirm if a publication is indexed by the journal citation reports 111 the use of fake impact metrics is considered a red flag 112 see also edit science portal author impact factor citation impact goodhart s law journalology notes on alternatives edit quality not quantity dfg adopts rules to counter the flood of publications in research press release deutsche forschungsgemeinschaft german research foundation 2010 dfg press release no 7 the leiden manifesto for research metrics 2015 plan s implementation guidelines february 2019 references edit 1 2 waltman ludo traag vincent antonio 1 march 2021 use of the journal impact factor for assessing individual articles statistically flawed or not f1000research 9 366 doi 10 12688 f1000research 23418 2 pmc 7974631 pmid 33796272 1 2 curry s february 2018 let s move beyond the rhetoric it s time to change how we judge research nature 554 7691 147 bibcode 2018natur 554 147c doi 10 1038 d41586 018 01642 w pmid 29420505 1 2 hutchins bi yuan x anderson jm santangelo gm september 2016 relative citation ratio rcr a new metric that uses citation rates to measure influence at the article level plos biology 14 9 e1002541 doi 10 1371 journal pbio 1002541 pmc 5012559 pmid 27599104 thomson corporation acquired isi online july 1992 archived from the original on 15 may 2013 retrieved 26 february 2012 via highbeam research acquisition of the thomson reuters intellectual property and science business by onex and baring asia completed press release 3 october 2016 journal citation reports web of science group retrieved 14 september 2019 web of science group web of science group 5 august 2019 retrieved 28 july 2020 1 2 the clarivate impact factor clarivate 20 june 1994 nature 2017 journal citation reports web of science science ed thomson reuters 2018 1 2 mcveigh me mann sj september 2009 the journal impact factor denominator defining citable counted items jama 302 10 1107 9 doi 10 1001 jama 2009 1301 pmid 19738096 hubbard sc 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p curry s hill s et al july 2015 the metric tide report of the independent review of the role of metrics in research assessment and management report doi 10 13140 rg 2 1 4929 1363 monastersky r 14 october 2005 the number that s devouring science the chronicle of higher education arnold dn fowler kk 2011 nefarious numbers notices of the american mathematical society 58 3 434 437 arxiv 1010 0278 bibcode 2010arxiv1010 0278a valderrama p escabias m valderrama mj jiménez contreras e baca p march 2020 influential variables in the journal impact factor of dentistry journals heliyon 6 3 e03575 bibcode 2020heliy 603575v doi 10 1016 j heliyon 2020 e03575 pmc 7082530 pmid 32211547 1 2 the plos medicine editors june 2006 the impact factor game it is time to find a better way to assess the scientific literature plos medicine 3 6 e291 doi 10 1371 journal pmed 0030291 pmc 1475651 pmid 16749869 agrawal aa april 2005 corruption of journal impact factors pdf trends in ecology evolution 20 4 157 bibcode 2005tecoe 20 157a doi 10 1016 j tree 2005 02 002 pmid 16701362 archived from the original pdf on 19 june 2010 fassoulaki a papilas k paraskeva a patris k august 2002 impact factor bias and proposed adjustments for its determination acta anaesthesiologica scandinavica 46 7 902 5 doi 10 1034 j 1399 6576 2002 460723 x pmid 12139549 s2cid 20805963 schutte hk svec jg 2007 reaction of folia phoniatrica et logopaedica on the current trend of impact factor measures folia phoniatrica et logopaedica 59 6 281 5 doi 10 1159 000108334 pmid 17965570 s2cid 7595296 journal citation reports notices archived from the original on 15 may 2010 retrieved 24 september 2009 mcleod s 25 september 2020 should authors cite sources suggested by peer reviewers six antidotes for handling potentially coercive reviewer citation suggestions learned publishing 34 2 282 286 doi 10 1002 leap 1335 issn 0953 1513 s2cid 225004022 wilhite aw fong ea february 2012 scientific publications coercive citation in academic publishing science 335 6068 542 3 bibcode 2012sci 335 542w doi 10 1126 science 1212540 pmid 22301307 s2cid 30073305 lynch jg march 2012 business journals combat coercive citation science 335 6073 1169 1 1169 bibcode 2012sci 335 1169l doi 10 1126 science 335 6073 1169 a pmid 22403371 dyer c february 1997 widow can be inseminated with husband s sperm bmj 314 7079 461 doi 10 1136 bmj 314 7079 461d pmc 2125988 pmid 9056791 gargouri y hajjem c lariviere v gingras y carr l brody t harnad s 2018 the journal impact factor a brief history critique and discussion of adverse effects arxiv 1801 08992 cs dl al hoorie a vitta jp 2019 the seven sins of l2 research a review of 30 journals statistical quality and their citescore sjr snip jcr impact factors language teaching research 23 6 727 744 doi 10 1177 1362168818767191 s2cid 149857357 falagas me alexiou vg 2008 the top ten in journal impact factor manipulation archivum immunologiae et therapiae experimentalis 56 4 223 6 doi 10 1007 s00005 008 0024 5 pmid 18661263 s2cid 7482376 tort ab targino zh amaral ob 2012 rising publication delays inflate journal impact factors plos one 7 12 e53374 bibcode 2012ploso 753374t doi 10 1371 journal pone 0053374 pmc 3534064 pmid 23300920 fong ea wilhite aw 2017 authorship and citation manipulation in academic research plos one 12 12 e0187394 bibcode 2017ploso 1287394f doi 10 1371 journal pone 0187394 pmc 5718422 pmid 29211744 adler r ewing j taylor p 2009 citation statistics a report from the international mathematical union imu in cooperation with the international council of industrial and applied mathematics iciam and the institute of mathematical statistics ims pdf statistical science 24 1 1 14 arxiv 0910 3529 doi 10 1214 09 sts285 issn 0883 4237 jstor 20697661 s2cid 219477 brembs b 2018 prestigious science journals struggle to reach even average reliability frontiers in human neuroscience 12 37 doi 10 3389 fnhum 2018 00037 pmc 5826185 pmid 29515380 gargouri y hajjem c lariviere v gingras y carr l brody t harnad s 2009 the impact factor s matthew effect a natural experiment in bibliometrics arxiv 0908 3177 physics soc ph severin anna strinzel michaela egger matthias barros tiago sokolov alexander mouatt julia vilstrup müller stefan 29 august 2023 dirnagl ulrich ed relationship between journal impact factor and the thoroughness and helpfulness of peer reviews plos biology 21 8 e3002238 doi 10 1371 journal pbio 3002238 eissn 1545 7885 issn 1544 9173 lccn 2003212293 oclc 1039259630 pmc 10464996 pmid 37643173 vessuri hebe guédon jean claude cetto ana maría september 2014 excellence or quality impact of the current competition regime on science and scientific publishing in latin america and its implications for development current sociology 62 5 647 665 doi 10 1177 0011392113512839 eissn 1461 7064 issn 0011 3921 s2cid 25166127 via sage publishing moore s neylon c eve mp o donnell dp pattinson d 2017 excellence r us university research and the fetishisation of excellence 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sprucing up one s impact factor nature 40...
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