RE: Dramatic Growth of Open Access - March 31, 2009

["Ian Russell" <ian.russell@cytherean.co.uk>]

Do you have a citation for the figure of 15% green OA that you 
quote, Stevan?

In the first URL you quote, Bjork et al come up with a figure of 
11.3% and even then admitted that "It is much more difficult to 
estimate the prevalence of green open access" and given their 
sample size was necessarily small (300 papers from a total of 
1.35 million (their estimate)), that "the absolute numbers are so 
small for each category that it is difficult to generalize to the 
whole target population."

Ian Russell
ALPSP

-----Original Message-----
From: owner-liblicense-l@lists.yale.edu
[mailto:owner-liblicense-l@lists.yale.edu] On Behalf Of Stevan Harnad
Sent: 07 April 2009 22:25
To: liblicense-l@lists.yale.edu
Subject: Re: Dramatic Growth of Open Access - March 31, 2009

Journal articles that are OA, as a percentage of annual journal
articles published is of course not the same as the percentage of
annual journal articles that are published in OA journals (Gold
OA). There's also the percentage of annual journal articles that
are published in non-OA journals but made OA through author
self-archiving (Green OA). The latter percentage is about 15% and
growing, especially because Green OA self-archiving can be, and
is being, mandated by their authors' institutions and funders.

Stevan Harnad

http://informationr.net/ir/14-1/paper391.html
http://www.eprints.org/openaccess/policysignup/

On Mon, Apr 6, 2009 at 7:33 PM, <Toby.GREEN@oecd.org> wrote:

> A dramatic growth in OA journal titles is one thing, but surely
> what counts is the number of OA articles as a percentage of all
> articles. Last week at UKSG, Derk Haank of Springer estimated
> that about 5-7% of newly published articles were OA today and he
> expected growth to be modest. He also reckoned that OA's share of
> all newly published articles would stabilize at about 10%. Does
> anyone have any figures on the share of OA articles as a
> percentage of all articles to corroborate or challenge Derk's
> estimates?
>
> Toby Green
> OECD