{"id":18426,"date":"2017-01-21T16:15:52","date_gmt":"2017-01-21T15:15:52","guid":{"rendered":"https:\/\/jurnsearch.wordpress.com\/?p=18426"},"modified":"2017-01-21T16:15:52","modified_gmt":"2017-01-21T15:15:52","slug":"doi-availability-levels","status":"publish","type":"post","link":"https:\/\/jurn.link\/jurnsearch\/index.php\/2017\/01\/21\/doi-availability-levels\/","title":{"rendered":"DOI availability levels"},"content":{"rendered":"<p><a href=\"http:\/\/link.springer.com\/article\/10.1007\/s11192-016-2225-6\">&#8220;Availability of digital object identifiers in publications archived by PubMed&#8221;<\/a>, 3rd January 2017.  For&#8230;<\/p>\n<blockquote><p>&#8220;the period 1966\u20132015 (50 years). Of the 496,665 articles studied over this period, 201,055 have DOIs (40.48%).&#8221;<\/p><\/blockquote>\n<p>So just under 60% are without DOIs, and that&#8217;s for biomedical in PubMed &mdash; albeit when including thirty years of pre-1995 (pre the mass Internet) coverage. More recently, for 2015, the study found that 13.5% of new content was still without a DOI.<\/p>\n<p>The DOI-free figures for the humanities will be far higher, according to <a href=\"http:\/\/www.sciencedirect.com\/science\/article\/pii\/S1751157715301176\">&#8220;Availability of digital object identifiers (DOIs) in Web of Science and Scopus&#8221;<\/a>, February 2016&#8230;<\/p>\n<blockquote><p>&#8220;Many journals related to the Natural Sciences and Medicine with considerable impact have no DOI. Arts &amp; Humanities WoS [Web of Science] categories have the highest percentage of documents without DOI.&#8221; &#8230; &#8220;exceeding 50% only since 2013. The observed values for Books and Proceedings are even lower despite the importance of these document types &#8230;&#8221;<\/p><\/blockquote>\n<p>As for DOI availability within articles in repositories, <a href=\"http:\/\/www.irus.mimas.ac.uk\/help\/faq\/\">IRUS-UK<\/a> provides a &#8220;DOI Summary&#8221; field giving &#8220;the numbers and percentages that have DOIs available&#8221; in UK repositories, although the access to their datasets is controlled. IRUS-UK has no summary infographics that I could find, relevant to DOI availability.  But it would be interesting to determine what proportion of UK repository free\/open journal articles have DOIs.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;Availability of digital object identifiers in publications archived by PubMed&#8221;, 3rd January 2017. For&#8230; &#8220;the period 1966\u20132015 (50 years). Of &hellip;<\/p>\n<p><a href=\"https:\/\/jurn.link\/jurnsearch\/index.php\/2017\/01\/21\/doi-availability-levels\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,16],"tags":[],"class_list":["post-18426","post","type-post","status-publish","format-standard","hentry","category-how-to-improve-academic-search","category-spotted-in-the-news"],"_links":{"self":[{"href":"https:\/\/jurn.link\/jurnsearch\/index.php\/wp-json\/wp\/v2\/posts\/18426","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jurn.link\/jurnsearch\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jurn.link\/jurnsearch\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jurn.link\/jurnsearch\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jurn.link\/jurnsearch\/index.php\/wp-json\/wp\/v2\/comments?post=18426"}],"version-history":[{"count":0,"href":"https:\/\/jurn.link\/jurnsearch\/index.php\/wp-json\/wp\/v2\/posts\/18426\/revisions"}],"wp:attachment":[{"href":"https:\/\/jurn.link\/jurnsearch\/index.php\/wp-json\/wp\/v2\/media?parent=18426"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jurn.link\/jurnsearch\/index.php\/wp-json\/wp\/v2\/categories?post=18426"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jurn.link\/jurnsearch\/index.php\/wp-json\/wp\/v2\/tags?post=18426"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}