Why not try to reconcile the Ulrich's figures with the number of subscription titles reported by major technical libraries, such as CISTI, and also discover to what extent the number of titles has grown?

Best wishes,

Albert Henderson, ed., ELECTRONIC DATABASES AND PUBLISHING (Transaction 1998)

-----Original Message-----
From: Peter Jacso <jacso@HAWAII.EDU>
To: SERIALST <SERIALST@LIST.UVM.EDU>
Sent: Fri, Aug 3, 2012 6:41 pm
Subject: Re: [SERIALST] Update on Ulrichs estimate of total number of active peer-reviewed journals: 55,311

Hi Stevan

The numbers are not correct from the perspective of the number of  active, academic, peer-reviewed journals because the print and digital editions are separate main entries.

Considering that almost half of them are available both in print AND digital formats the number of journals as you specified is closer to 27,000.

There are about 3500 online-only journals in your specified domain (such as Information Research (ISSN1368-1613), which are not double counted. 
27,000 is a good ball-park estimate. 

Further details about this issue are available in my recent review of Ulrich's Serials Analysis System. 

Its pre-print is available at  www.jacso.info/PUB-list-by-years.htm   It is item #802

Best regards
peter 

On Fri, Aug 3, 2012 at 9:07 AM, Stevan Harnad <amsciforum@gmail.com> wrote:
For years now, I've just been re-using an old Ulrich's estimate of about 25,000 for the total number of active peer-reviewed journals.

Prompted by a recent query from someone, I've checked again, and -- unless I've made a mistake in my search -- the number now seems to have doubled to 55,311.

The parameters I used to get this figure were (1) Active, (2) Journal, (3) Academic/Scholarly, (4) Refereed/Peer-reviewed, 

A further breakdown shows that of these 55,311 active peer reviewed journals,

23,527 (43%) are available online

9,354 (17%) are indexed in Thomson-Reuters-ISI's Journal Citation reports

6,962 (13%) are open access journals (freely available online) (Gold OA, presumably not including Hybrid Gold).

769 (11%) of the 9,354 Thomson-Reuters-ISI-indexed journals are open access journals

--

According to the last estimate of journals indexed by SHERPA/ROMEO (which does not include all the journals indexed by Ulrichs, but does include most of the top journals indexed by Thomson-Reuters-ISI):

60% of journals recognize the author's right to provide immediate, un-embargoed open access upon self-archiving their final drafts in their institutional repositories.

--

It would be helpful if others could check and confirm these figures.

Stevan Harnad
***********************************************
* You are subscribed to the SERIALST listserv (Serials in Libraries discussion forum)
* To unsubscribe, send an email to the server address: LISTSERV@LIST.UVM.EDU . Do NOT include a subject line. Type as an email message these two words: SIGNOFF SERIALST
* For additional information, see SERIALST Scope, Purpose and Usage Guidelines.
***********************************************

***********************************************
* You are subscribed to the SERIALST listserv (Serials in Libraries discussion forum)
* To unsubscribe, send an email to the server address: LISTSERV@LIST.UVM.EDU . Do NOT include a subject line. Type as an email message these two words: SIGNOFF SERIALST
* For additional information, see SERIALST Scope, Purpose and Usage Guidelines.
***********************************************

***********************************************
* You are subscribed to the SERIALST listserv (Serials in Libraries discussion forum)
* To unsubscribe, send an email to the server address: LISTSERV@LIST.UVM.EDU . Do NOT include a subject line. Type as an email message these two words: SIGNOFF SERIALST
* For additional information, see SERIALST Scope, Purpose and Usage Guidelines.
***********************************************