Centrality Measures for Journals included in the JCR
loet at LEYDESDORFF.NET
Thu Jun 8 04:22:30 EDT 2006
Centrality Measures of <http://www.leydesdorff.net/centrality/index.htm>
7379 Journals included in
the <http://www.leydesdorff.net/centrality/index.htm> Science Citation
Index and Social Science Citation Index 2004
The four centrality measures used by UCINET were applied to the aggregated
journal-journal citations contained in the Journal Citation Reports of the
Science Citation Index 2004 and Social Science Citation Index 2004.
. See for definitions of the centrality measures: R. A. Hanneman & M.
Riddle (2005). Introduction to Social Network Methods. Riverside, CA:
University of California, Riverside; at http://faculty.ucr.edu/~hanneman/.
. The program UCINET is available at http://www.analytictech.com/ .
The large number of decimals is copied from the output of UCINET. The user
may wish to adapt this to one's own preference.
. The cited patterns are used as the row variables and the citing
patterns as the column variables; the measures thus provide centrality in
terms of "being cited."
See for more information about the data:
. Mapping <http://www.leydesdorff.net/sci_sosci/index.htm>
Interdisciplinarity at the Interfaces between the Science Citation Index and
the Social Science Citation Index, Paper presented at the International
Conference on Network Science, NetSci 2006, Bloomington, IN, May 22-25,
2006; <pdf-version <http://www.leydesdorff.net/sci_sosci/sci+sosci.pdf> >
. Visualization of the Citation Impact
<http://www.leydesdorff.net/jcr04> Environments of Scientific Journals: An
online mapping exercise, Journal of the American Society for Information
Science and Technology (forthcoming). <pdf-version
. "Betweenness as an Indicator of Interdisciplinarity of Scientific
Journals." Paper to be presented at the 9th International S&T Indicators
Conference. Leuven (Belgium), September 7-9, 2006.
The download file <http://www.leydesdorff.net/jcr04/centrality/index.htm>
is large; a browser may need a bit of time
** apologies for cross-postings
Amsterdam School of Communications Research (ASCoR)
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