Journal Citation Reports® Notices

Welcome to Journal Citation Reports®, a unique Web-based research tool that allows you to evaluate and compare journals using citation data drawn from approximately 12,000 scholarly and technical journals and conference proceedings from more than 3,300 publishers in over 60 countries. Journal Citation Reports is the only source of citation data on journals, and includes virtually all specialties in the areas of science, technology, and social sciences.

Upgrade News

• 2011 JCR Data Release
• 2011 JCR Data Update
• Expanded Metrics and Features
• Editorial Information
• How to Cite JCR
• Browser-Related Issues
• Thomson Reuters Customer Technical Support

2011 JCR Data Release

This release of Journal Citation Reports provides 2011 data. The 2012 edition of Journal Citation Reports will be made available mid-year 2013.

Regional Content Expansion

Throughout the years 2007-2009, more than 1,600 journals that focus on topics of regional interest were added to Web of Science. Data used to calculate JCR metrics include citations from these journals as each was included in our citation indexes. Most of these titles are now included in the list of titles available in the 2011 JCR. To get information about the new regional content in JCR, go to http://isiwebofknowledge.com/products_tools/multidisciplinary/webofscience/contentexp/.

To access the list of titles receiving their first Journal Impact Factor in the 2011 data, go to http://scientific.thomsonreuters.com/imgblast/JCR-newlist-2011.pdf.

To access the complete list of JCR 2011 titles, go to http://scientific.thomsonreuters.com/imgblast/JCRFullCovlist-2011.pdf.

2011 JCR Data Update

After JCR data were published in June 2012, we were able to obtain materials whose absence had prevented journals from receiving a Journal Impact Factor, as well as to correct metrics for a small number of journals. The 2011 JCR Web data are now complete and all updates have been fully incorporated into the product.

Expanded Metrics and Features

• 5-Year Journal Impact Factor is the average number of times articles from a journal published in the past five years have been cited in the JCR year. For journals in subjects where citation activity continues to rise through several years, this metric allows more of their total citation activity to be included in a critical performance metric.
• Eigenfactor® Metrics, comprising the Eigenfactor® Score and Article Influence® Score, use JCR citation data to assess the influence of a journal in relation to other journals. These metrics, based on five years of citation activity, consider not just the count of citations but the structure of the citation network. Eigenfactor Metrics are available only for JCR years 2007 and later.
• Journal Self Cites provides analyses of journal self citations and their contribution to the Journal Impact Factor calculation.
• Rank-in-Category reveals the ranking of a journal in its subject categories based on the Journal Impact Factor. An accompanying Impact Factor box plot depicts the distribution of Impact Factors for all journals in a category.

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Editorial Information

Title Changes

• The 2011 JCR data (Science and Social Sciences editions combined) contain 45 journals with new titles in 2009 or 2010 resulting from a publication changing title, merging with another title or splitting into two or more separate titles. 
• To see a full list of 2009 and 2010 title changes:
  • From the Welcome page, if you select View a group of journals…, Search for a specific journal, or View all journals, the resulting screen will contain a link to Journal Title Changes that are specific to the edition and year of the JCR in which you are working. 
  • In addition, any individual journal record that is affected by a year 2009 or year 2010 title change will contain a title changes link in the Full Journal Record in the Journal Information section.  This will note the specific nature of the change as well as the other title/titles involved. 

Combined titles

• The titles listed below are published in individually titled sections. The individual sections are listed in Web of Science according to their unique titles. For the purposes of JCR listing, the sections are combined and the parent title is retained with a single Journal Impact Factor that combines item counts and citation data for all sections. The decision to combine sections to a single JCR listing is based on JCR Editors' analysis of citation aggregation effectiveness. 
• ENER EDUC SCI TECH-A and ENER EDUC SCI TECH-B are combined to: ENERGY EDUC SCI TECH
• J GEOPHYS RES-ATMOS, J GEOPHYS RES-BIOGEO, J GEOPHYS RES-EARTH, J GEOPHYS RES-OCEANS, J GEOPHYS RES-PLANET, J GEOPHYS RES-SOL EA, and J GEOPHYS RES-SPACE are combined to: J GEOPHYS RES
• TIERAERZTL PRAX G N and TIERAERZTL PRAX K H are combined to TIERAERZTL PRAX
• TISSUE ENG PART B-RE, TISSUE ENG PART C-ME and TISSUE ENG PT A are combined to TISSUE ENG

Title Suppressions

Metrics for the titles listed below are not published in the 2011 JCR. Suppressed titles were found to have anomalous citation patterns resulting in a significant distortion of the Journal Impact Factor, so that the rank does not accurately reflect the journal’s citation performance in the literature. The Journal Impact Factor provides an important and objective measure of a journal’s contribution to scholarly communication, and its distortion by an excessive concentration of citations is a serious matter. JCR staff will monitor these journals going forward and the titles will be included in a future edition of JCR when the problem of citation concentration has been resolved. In the meantime, coverage of these journals in Web of Science and other Thomson Reuters products is not changed.

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How to Cite JCR

When citing  Journal Citation Reports, be sure to include the following information:

• The JCR data year that you are referencing.
• The full name, Journal Citation Reports. Include the registered trademark symbol.
• The edition: Science Edition or Social Sciences Edition. (The edition is not essential.)
• Name of the publisher, Thomson Reuters.
• Copyright year. The copyright year appears at the bottom of every page in JCR.
  

Examples:

2008 Journal Citation Reports® Science Edition (Thomson Reuters, 2009)

2007 Journal Citation Reports® Social Sciences Edition (Thomson Reuters, 2008)

2005 Journal Citation Reports® (Thomson Reuters, 2006)

Browser-Related Issues

System Requirements

Thomson Reuters supports the following operating systems and browsers:

Thomson Reuters Customer Technical Support

If you have questions about using our products or about your access to them, please visit our support page at http://science.thomsonreuters.com/support/. This page has links to our support Knowledgebase, the local telephone numbers and hours of operation. When you click on the Open eTicket tab, your issue will be immediately routed to your local support team.

Please go to http://science.thomsonreuters.com/techsupport/datachange/ to request changes to the database.

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This file was last updated on 09/26/2012

Thomson Reuters and its product names and acronyms used herein are trademarks, registered trademarks, and service marks used under license. Thomson Reuters has no proprietary interest in the marks or names of others. Eigenfactor® Metrics, Eigenfactor® Score, Article Influence® Score are Licensed Marks used with permission from the University of Washington.

Copyright© 2012 The Thomson Reuters Corporation