Monthly Archives: mai 2012

The weakening relationship between the Impact Factor and…

The weakening relationship between the Impact Factor and papers’ citations in the digital age :

« Historically, papers have been physically bound to the journal in which they were published but in the electronic age papers are available individually, no longer tied to their respective journals. Hence, papers now can be read and cited based on their own merits, independently of the journal’s physical availability, reputation, or Impact Factor. We compare the strength of the relationship between journals’ Impact Factors and the actual citations received by their respective papers from 1902 to 2009. Throughout most of the 20th century, papers’ citation rates were increasingly linked to their respective journals’ Impact Factors. However, since 1990, the advent of the digital age, the strength of the relation between Impact Factors and paper citations has been decreasing. This decrease began sooner in physics, a field that was quicker to make the transition into the electronic domain. Furthermore, since 1990, the proportion of highly cited papers coming from highly cited journals has been decreasing, and accordingly, the proportion of highly cited papers not coming from highly cited journals has also been increasing. Should this pattern continue, it might bring an end to the use of the Impact Factor as a way to evaluate the quality of journals, papers and researchers. »

URL : http://arxiv.org/abs/1205.4328

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31 mai 2012 · 19 h 55 min

Leaving Elsevier’s big deal an evaluation of…

Leaving Elsevier’s « big deal »: an evaluation of the Italian National Institute of Health experience inside the Bibliosan Consortium :

« In 2011 the Istituto Superiore di Sanità (ISS), the Italian National Institute of Health, has been forced, due to economic reason, to leave the Bibliosan Consortium contract with the publisher Elsevier. The contract, following the “big deal” model, provided for the maintenance of paper subscriptions and the payment of an additional fee for the whole electronic collection (more than 2,000 journal titles). The continuous increase of annual costs has led to unsustainable growth in costs and to the subsequent cancellation of the contract. This meant that more than 500 researchers of the Institute have suddenly had access to just 180 Elsevier current titles instead of the previous 2,000. The study traces the various stages which led to taking this unavoidable decision to cut about half of the Elsevier’s journals and analyzes its impact. »

URL : http://hdl.handle.net/10760/17042

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31 mai 2012 · 19 h 03 min

Beyond citations Scholars’ visibility on the social Web…

Beyond citations: Scholars’ visibility on the social Web :

« Traditionally, scholarly impact and visibility have been measured by counting publications and citations in the scholarly literature. However, increasingly scholars are also visible on the Web, establishing presences in a growing variety of social ecosystems. But how wide and established is this presence, and how do measures of social Web impact relate to their more traditional counterparts? To answer this, we sampled 57 presenters from the 2010 Leiden STI Conference, gathering publication and citations counts as well as data from the presenters’ Web « footprints. » We found Web presence widespread and diverse: 84% of scholars had homepages, 70% were on LinkedIn, 23% had public Google Scholar profiles, and 16% were on Twitter. For sampled scholars’ publications, social reference manager bookmarks were compared to Scopus and Web of Science citations; we found that Mendeley covers more than 80% of sampled articles, and that Mendeley bookmarks are significantly correlated (r=.45) to Scopus citation counts. »

URL : http://arxiv.org/abs/1205.5611

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29 mai 2012 · 18 h 41 min

Le classement de Leiden environnement scientifique et configuration…

Le classement de Leiden: environnement scientifique et configuration :

« Le classement de Leiden s’impose aujourd’hui comme une alternative pertinente et valable vis-à-vis de celui de Shanghai. De nombreux indicateurs font intervenir les caractéristiques propres aux champs disciplinaires et des calculs fondés sur le principe de distribution. Il est conçu par le centre CWTS de l’université néerlandaise de Leiden. »

« The Leiden Ranking is considered today as quite a pertinent and valuable alternative vs. the Shanghai Ranking. A significant number of indicators involve for instance Fields Citation Scores and data distribution. It is conceived by the CWTS of the University of Leiden – The Netherlands. »

URL : http://archivesic.ccsd.cnrs.fr/sic_00696098

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27 mai 2012 · 17 h 20 min

Establishment of Institutional Mechanism for Building National Repository…

Establishment of Institutional Mechanism for Building National Repository in Health Sciences :

« National consolidation of published and unpublished literature in the field of biomedical sciences can playa major role in scholarly communication to help the end users in providing research published in the country.Institutional repositories are a good approach for a cost-effective publishing with a cooperation and participationof each institution for capturing, preserving, managing, and nurturing the discussion. In turn, metadata can be harvested centrally to access the digital information of common interest whereas individual libraries shouldable to preserve digital assets. Institutionalisation mode has been recommended for building national digitalrepository system for the country. The public funding should be provided to apex body so as to formulatethe requisite policies for the spread of open access movement in the country and also formulate a long termsustainable model for building national level system in the country. »

URL : http://publications.drdo.gov.in/ojs/index.php/djlit/article/view/2386

Commentaires fermés sur Establishment of Institutional Mechanism for Building National Repository…

23 mai 2012 · 18 h 27 min