Science/NSF report

[Loet Leydesdorff]

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: 5341
journals. 

The file of the NSF gives for 5394 journals a match with the JCR (including
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 2008
(at p. 5-37) mention 4906 journals. Thus, this is OK.

Thank you so much!

Best wishes, 


Loet
________________________________

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 leydesdorff.net ; http://www.leydesdorff.net/