Science/NSF report

Stephen J Bensman notsjb at LSU.EDU
Tue Feb 19 10:28:16 EST 2008

I should like to point out that what you are counting are not really
journals.  The JCRs do not define journals as bibliographic entities.
What you are counting are disaggregated title segments, which have to be
combined into bibliographic entities in accordance with the logic of
your research.  I would suggest that you study chapter 12 of the
Anglo-American Cataloging Rules on "Continuing Resources", which is also
available online in French and German translations.  I would also
suggest that you become acquainted with MARC Codes 770-785, so that you
can trace in OCLC the bibliographic history of the JCR title segments.
Otherwise what you may working with a random mass of serial segments
unrecognizable to your audience of interest.  

Stephen J. Bensman
LSU Libraries
Louisiana State University
Baton Rouge, LA   70803
notsjb at

-----Original Message-----
From: ASIS&T Special Interest Group on Metrics
[mailto:SIGMETRICS at LISTSERV.UTK.EDU] On Behalf Of Loet Leydesdorff
Sent: Tuesday, February 19, 2008 8:52 AM
Subject: Re: [SIGMETRICS] Science/NSF report

Dear Vladimir,

Yes, this solves the issue. The SCI contained 3722 journals in 2005, the
SSCI 1747. The sum is 5469, but there is some overlap, and therefore:

The file of the NSF gives for 5394 journals a match with the JCR
the expanded set). Thus, this seems OK.

The IpIq Fieldname "Professional Fields" is attributed in 2005 to 446 of
these journals.
5469 - 446 = 4948 or alternatively: 5341 - 446 = 4895. The Indicators
(at p. 5-37) mention 4906 journals. Thus, this is OK.

Thank you so much!

Best wishes, 


Loet Leydesdorff 
Amsterdam School of Communications Research (ASCoR), 
Kloveniersburgwal 48, 1012 CX Amsterdam. 
Tel.: +31-20- 525 6598; fax: +31-20- 525 3681 
loet at ; 


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