We hypothesized that it is not open access status but rather exposure in the PubMed platform that affects citation frequency in medical journals. In November 2008, medical journals from Korea began to be added to PubMed Central (PMC). Therefore, it would be interesting to know whether or not their impact factor based on Web of Science has increased since the journals were listed in PMC/PubMed. To answer this question, a citation analysis of seven journals that have been indexed in PMC since 2008 or 2009 was done. Only non-Medline journals were selected and the impact factors of five Medline journals were compared. The impact factor was calculated via Web of Science. Journal Citation Reports (JCR) data were used if the data of the target journals were provided in JCR. Trends for the impact factors of different years were analyzed using dBSTAT ver. 5.0. There has been an increasing rates of the impact factor for the seven non-Medline journals, 1.92 in 2011 over 2010; 3.27 in 2010 over 2009; 1.12 in 2012 over 2011. As for the five Medline journals, the increasing rate in 2010 over 2009 was 1.18; however, those of 2011 over 2010 and 2012 over 2011 were 1.01 and 1.04 respectively. The Science Citation Index Expanded impact factor of medical journals published in Korea can be increased if those journals are published in English and listed in PMC. This is an effect of the platform in which the journals are listed and not just an effect of free access.
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In the era of information technology, scholarly journals cannot escape the rising tide of technological advancement. To be exposed more easily to readers, the web forms of scholarly journals and articles become more important year after year. Furthermore, there is a trend of print journals closing, and a significant emergence of online journals. Journal Article Tag Suite (JATS) extensible markup language (XML) became an National Information Standards Organization standard language in online journal publishing in 2012. It is an essential format to present readers with a more user-friendly interface. JATS XML was developed by PubMed Central (PMC) XML, which was a deposit form of articles to PMC. Editors and other publishing-related personnel should be able to understand the concept and production process of XML files. When JATS XML is produced, a variety of web presentation views can be generated, such as PubReader and epub 3.0. Further, JATS XML can be easily converted to digital object identifier CrossRef XML, CrossMark XML, and FundRef XML. Small scholarly society journal editors and publishers can promote the visibility of their journals by depositing JATS XML files to PMC or ScienceCentral. Owing to these benefits of JATS XML, publishers and editors should now adopt JATS XML for journal publishing.
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CrossRef (http://www.crossref.org) is a not-for-profit membership association of publishers. Since its founding in 2000, CrossRef has provided reference linking services for over 62 million scholarly content items, including journal articles, books and book chapters, conference proceedings, reference entries, technical reports, standards, and data sets. CrossRef also provides additional collaborative services designed to improve trust in the scholarly communications process, including Cited-By linking, CrossCheck plagiarism screening, CrossMark update identification, and the FundRef funder identification service. All of these services continue to develop to try to meet the evolving needs of publishers, and this article attempts to give an overview of them and highlight important updates which have taken place over the last 12 months.
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CrossRef is an association of scholarly publishers that develops shared infrastructure to support more effective scholarly communications. In the 14 years since CrossRef launched, it has developed a number of services that hinge around the Digital Object Identifier (DOI) and the publication metadata submitted to CrossRef by publishers registering DOIs. CrossMark and FundRef are two additional services from CrossRef that publishers can choose to participate in, and both require publishers to provide additional information with the bibliographic metadata provided within their CrossRef deposits. This article will aim to show what this additional metadata is, how it should be formatted and why, so that publishers can use it to enhance their content and participate in additional CrossRef services that benefit the scholarly communications industry.
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