Visualization of the Citation Impact Environments of Scientific Journals: An online mapping exercise
loet at LEYDESDORFF.NET
Tue Sep 27 03:53:04 EDT 2005
<http://www.leydesdorff.net/jcr04/index.htm> Visualization of the Citation Impact Environments of Scientific Journals: An online mapping exercise
<http://www.leydesdorff.net/jcr04/jcr2pajek.pdf> <http://www.leydesdorff.net/jcr04/jcr2pajek.pdf> <click here for the PDF version>
Abstract: The aggregated journal-journal citation networks based on the Journal Citation Reports 2004 of the Science Citation Index (5968 journals) and the Social Science Citation Index (1712 journals) are made accessible from the perspective of any of these journals. The vector-space model is used for the normalization and the results are brought online as input-files for the visualization program Pajek. The user thus is able to analyze the citation environment in terms of links and graphs. Furthermore, the local impact of a journal is defined as the share of the total citations in the specific journal’s citation environments; the vertical size of the nodes is varied proportionally to this citation impact. The horizontal size of each node can be used for providing the same information after correction for the within-journal (self‑)citations. In the “citing” environment, the equivalents of this measure can be considered as a citation activity index which maps how the relevant journal environment is perceived by the collective of authors of a journal. As a policy application, the mechanism of interdisciplinary developments among the sciences is elaborated for the case of nanotechnology journals.
One can click on any of the journal names below and obtain the Pajek file corresponding to the citation impact environment of the journal ("cited"). See for further explanation at http://www.leydesdorff.net/jcr04/index.htm.
cited journal files from the <http://www.leydesdorff.net/jcr03/cited> SCI
cited journal files from the <http://www.leydesdorff.net/jcr04/cited> SCI
citing journal files from <http://www.leydesdorff.net/jcr03/citing> the SCI
citing journal files from <http://www.leydesdorff.net/jcr04/citing> the SCI
cited journal files from <http://www.leydesdorff.net/jcr03s/cited> the SoSCI
cited journal files from <http://www.leydesdorff.net/jcr04s/cited> the SoSCI
citing journal files from <http://www.leydesdorff.net/jcr03s/citing> the SoSCI
citing journal files from <http://www.leydesdorff.net/jcr04s/citing> the SoSCI
** apologies for cross-postings. This is a draft version; comments and suggestions are welcome.
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loet at leydesdorff.net <mailto:loet at leydesdorff.net> ; http://www.leydesdorff.net/
The Challenge of <http://www.upublish.com/books/leydesdorff-sci.htm> Scientometrics; The <http://www.upublish.com/books/leydesdorff.htm> Self-Organization of the Knowledge-Based Society
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