[okfn-br] New article on delayed open access

Quinta Junho 6 13:14:46 UTC 2013

---------- Forwarded message ----------
From: David Solomon <dsolomon em msu.edu>
Date: Tue, Jun 4, 2013 at 11:30 PM
Subject: [BOAI] New article on delayed open access
To: SPARC-OAForum <SPARC-OAForum em arl.org>, boai-forum em ecs.soton.ac.uk

*Sorry for cross postings. The accepted version of following article has
recently become available:*

Delayed Open Access – an overlooked high-impact category of openly
available scientific literature

Mikael Laakso, Bo-Christer Björk

Abstract: Delayed open access (OA) refers to scholarly articles in
subscription journals made available openly on the web directly through the
publisher at the expiry of a set embargo period. Though a substantial
number of journals have practiced delayed OA since they started publishing
e-versions, empirical studies concerning open access have often overlooked
this body of literature. This study provides comprehensive quantitative
measurements by identifying delayed OA journals, collecting data concerning
their
publication volumes, embargo lengths, and citation rates. Altogether 492
journals were identified, publishing a combined total of 111 312 articles
in 2011. 77,8 % of these articles were made open access within 12 months
from publication, with 85,4 %
becoming available within 24 months. A journal impact factor analysis
revealed that delayed OA journals have on average twice as high average
citation rates compared to closed subscription journals, and three times as
high as immediate OA journals. Overall the results demonstrate that delayed
OA journals constitute an important segment of the openly available
scholarly journal literature, both by their sheer article

This is a preprint of an article accepted for publication in Journal of the
American Society for Information Science and Technology. Copyright © 2012
(American Society for Information Science and Technology)

*You can download it from our portal for research on open access publishing:
*
*
*
*http://www.openaccesspublishing.org/*<http://www.openaccesspublishing.org/>

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*Carolina Rossini*
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