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Now available:
 
Local Citation Impact Environments of 7,525 Scientific Journals in 2005
("cited"); 
At <http://www.leydesdorff.net/jcr05/citing/index.htm> 
Local Citation Activity Environments of 7,525 Scientific Journals in 2005
("citing") 
At <http://www.leydesdorff.net/jcr05/citing/index.htm> 

One can click on any of the journal names and obtain the Pajek file
corresponding to the citation impact environment of the journal ("cited" or
"citing," respectively). See for further explanation: "Visualization of the
Citation Impact Environment of Scientific Journals: An online mapping
exercise," Journal of the Amererican Society for Information Science and
Technology (forthcoming) <http://www.leydesdorff.net/jcr04/index.htm> <pdf
version: http://www.leydesdorff.net/jcr04/jcr2pajek.pdf>  

The 2005 matrices are based on taking the one-percent threshold of "total
citations" *after* correction for within-journal citations. This
main-diagonal value is sometimes so large that it overshadows the
environment and therefore it is no longer included in setting the threshold
for the delineation of the set.

* apologies for cross-postings

________________________________

Loet Leydesdorff 
Amsterdam School of Communications Research (ASCoR)
Kloveniersburgwal 48, 1012 CX Amsterdam
Tel.: +31-20- 525 6598; fax: +31-20- 525 3681 
[log in to unmask] ; http://www.leydesdorff.net/ 

The Knowledge-Based Economy: Modeled, Measured, Simulated. 385 pp.; US$
18.95
<http://www.universal-publishers.com/book.php?method=ISBN&book=1581129378> 

 
 

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