{"id":2528,"date":"2009-03-11T19:48:00","date_gmt":"2009-03-11T19:48:00","guid":{"rendered":"https:\/\/www.science-metrix.com\/?p=2528"},"modified":"2021-09-29T14:43:29","modified_gmt":"2021-09-29T14:43:29","slug":"the-decline-in-the-concentration-of-citations-1900-2007","status":"publish","type":"post","link":"https:\/\/science-metrix.com\/fr\/the-decline-in-the-concentration-of-citations-1900-2007\/","title":{"rendered":"The decline in the concentration of citations, 1900\u20132007"},"content":{"rendered":"\t\t
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The decline in the concentration of citations, 1900\u20132007<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Larivi\u00e8re, V., Gingras, Y., and Archambault, \u00c9. (2009).\u00a0The decline in the concentration of citations, 1900\u20132007.\u00a0Journal of the American Society for Information Science and Technology (JASIST<\/a>)<\/em>,\u00a060<\/em>(4),\u00a0858\u2013862.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Abstract<\/strong><\/p>

This article challenges recent research (Evans, 2008) reporting that the concentration of cited scientific literature increases with the online availability of articles and journals. Using Thomson Reuters\u2019 Web of Science, the present article analyses changes in the concentration of citations received (2- and 5-year citation windows) by papers published between 1900 and 2005. Three measures of concentration are used: the percentage of papers that received at least one citation (cited papers); the percentage of papers needed to account for 20%, 50%, and 80% of the citations; and the Herfindahl-Hirschman index (HHI). These measures are used for four broad disciplines: natural sciences and engineering, medical fields, social sciences, and the humanities. All these measures converge and show that, contrary to what was reported by Evans, the dispersion of citations is actually increasing.<\/p>

Read the postprint [PDF]<\/a><\/span>.<\/p>

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JASIST<\/p>","protected":false},"author":2,"featured_media":2529,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[9],"tags":[14],"class_list":["post-2528","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-peer-reviewed-papers","tag-bibliometrics"],"yoast_head":"\nThe decline in the concentration of citations, 1900\u20132007 - Science-Metrix<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/science-metrix.com\/fr\/the-decline-in-the-concentration-of-citations-1900-2007\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The decline in the concentration of citations, 1900\u20132007 - Science-Metrix\" \/>\n<meta property=\"og:description\" content=\"JASIST\" \/>\n<meta property=\"og:url\" content=\"https:\/\/science-metrix.com\/fr\/the-decline-in-the-concentration-of-citations-1900-2007\/\" \/>\n<meta property=\"og:site_name\" content=\"Science-Metrix\" \/>\n<meta property=\"article:published_time\" content=\"2009-03-11T19:48:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-09-29T14:43:29+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/science-metrix.com\/wp-content\/uploads\/2021\/07\/iStock_000013199997_Full.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2048\" \/>\n\t<meta property=\"og:image:height\" content=\"2513\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Beverley\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Beverley\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimation du temps de lecture\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/science-metrix.com\/the-decline-in-the-concentration-of-citations-1900-2007\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/science-metrix.com\/the-decline-in-the-concentration-of-citations-1900-2007\/\"},\"author\":{\"name\":\"Beverley\",\"@id\":\"https:\/\/www.science-metrix.com\/fr\/#\/schema\/person\/c4f7df55ca5f7c6260c4fe0f92ee49c2\"},\"headline\":\"The decline in the concentration of citations, 1900\u20132007\",\"datePublished\":\"2009-03-11T19:48:00+00:00\",\"dateModified\":\"2021-09-29T14:43:29+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/science-metrix.com\/the-decline-in-the-concentration-of-citations-1900-2007\/\"},\"wordCount\":173,\"publisher\":{\"@id\":\"https:\/\/www.science-metrix.com\/fr\/#organization\"},\"image\":{\"@id\":\"https:\/\/science-metrix.com\/the-decline-in-the-concentration-of-citations-1900-2007\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/science-metrix.com\/wp-content\/uploads\/2021\/07\/iStock_000013199997_Full.jpg\",\"keywords\":[\"bibliometrics\"],\"articleSection\":[\"Peer-reviewed papers\"],\"inLanguage\":\"fr-CA\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/science-metrix.com\/the-decline-in-the-concentration-of-citations-1900-2007\/\",\"url\":\"https:\/\/science-metrix.com\/the-decline-in-the-concentration-of-citations-1900-2007\/\",\"name\":\"The decline in the concentration of citations, 1900\u20132007 - 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