Archives par mot-clé : Bibliométrie

oaDOI à la loupe : un service et un outil de mesure

Article publié sur le Carnet’ISt le 3 novembre 2016

Cet outil, grâce à un simple copier-coller du DOI d’un document, va à la recherche d’une éventuelle version en accès libre. Un lien oaDOI.org est en quelque sorte une alternative au résolveur doi.org afin d’éviter à l’utilisateur de se retrouver devant une version payante du document qu’il cherche alors qu’il en existe une version en Open Access.

Lire la suite : https://carnetist.hypotheses.org/835

Altmetrics: medición de la influencia de los medios en el impacto social de la investigación

Alonso-Arévalo, Julio and Cordón-García, José-Antonio and Maltrás-Barba, Bruno Altmetrics: medición de la influencia de los medios en el impacto social de la investigación. Cuadernos de Documentación Multimedia, 2016, vol. 27, n. 1. http://revistas.ucm.es/index.php/CDMU/article/view/52870

Social media is changing the way we interact, present ideas and information and judge the quality of content and contributions. In recent years there have been hundreds of platforms to freely share all kinds of information and connect across networks. These new tools generate activity statistics and interactions among users such as mentions, retweets, conversations, comments on blogs or Facebook; managers references showing popularity ratings of more references shared by other researchers or repositories that generate statistics of visits or downloads of articles. This paper analyzes that have meaning and implications altmetrics, what are its advantages and critical platforms (Almetric.com, ImpactStory, Plos altmetrics, PlumX), reports progress and benefits for authors, publishers and librarians. It concluded that the value of alternative metrics as a complementary tool citation analysis is evident, although it is suggested that you should dig deeper into this issue to unravel the meaning and the potential value of these indicators to assess their potential.

Lire la suite : http://revistas.ucm.es/index.php/CDMU/article/view/52870

Correlación entre indicadores bibliométricos en revistas de Web of Science y Scopus

Salvador-Oliván, José-Antonio and Agustín-Lacruz, María-Del-Carmen Correlación entre indicadores bibliométricos en revistas de Web of Science y Scopus. Revista General de Información y Documentación, 2015, vol. 25, n. 2, pp. 341-359. http://eprints.rclis.org/28624/

This article compares the correlation between bibliometric indicators obtained from journals indexed in the Web of Science (WoS) and Scopusdatabases in 2013. Indicators selected for analysis include impact factor (FI), 5-year impact factor (5yrFI), Inmediacy index, Eigenfactor Score (EF), Article Influence Score (AIS), SCImago Journal Rank (SJR), cites/docs 2 years (FIScopus), h-index, Impact Per publication (IPP) and Source Normalized Impact per Paper (SNIP).From 10700 journals listed in both databases,9657 for analysis were selected because they contained all indicators.Correlations were determined for each pair of indicators and were tested with Spearman’s rho. The results shown that the correlations between several indicators are high and that they exhibit similar values in science and social sciences, providing evidence of convergent validity. Only H-index presented the lowest values providing complementaryinformation to other indicators.

Lire la suite : http://eprints.rclis.org/28624/

The dark side of Open Access in Google and Google Scholar: the case of Latin-American repositories

Orduña-Malea Enrique et Lopez-Cozar Emilio Delgado, 2014, « The dark side of Open Access in Google and Google Scholar: the case of Latin-American repositories », 17 juin 2014, publié sur le site ArXiv.org. http://arxiv-web3.library.cornell.edu/abs/1406.4331

Since repositories are a key tool in making scholarly knowledge open access, determining their presence and impact on the Web is essential, particularly in Google (search engine par excellence) and Google Scholar (a tool increasingly used by researchers to search for academic information). The few studies conducted so far have been limited to very specific geographic areas (USA), which makes it necessary to find out what is happening in other regions that are not part of mainstream academia, and where repositories play a decisive role in the visibility of scholarly production. The main objective of this study is to ascertain the presence and visibility of Latin American repositories in Google and Google Scholar through the application of page count and visibility indicators. For a sample of 137 repositories, the results indicate that the indexing ratio is low in Google, and virtually nonexistent in Google Scholar; they also indicate a complete lack of correspondence between the repository records and the data produced by these two search tools. These results are mainly attributable to limitations arising from the use of description schemas that are incompatible with Google Scholar (repository design) and the reliability of web indicators (search engines). We conclude that neither Google nor Google Scholar accurately represent the actual size of open access content published by Latin American repositories; this may indicate a non-indexed, hidden side to open access, which could be limiting the dissemination and consumption of open access scholarly literature.

Lire la suite : http://arxiv-web3.library.cornell.edu/abs/1406.4331

A longitudinal comparison of citation rates and growth among open access journals

Bo-Christer Björk, Mikael Laakso, David Solomon and others (2013). A longitudinal comparison of citation rates and growth among open access journals. Publié sur le site Research on open access publishing le 23 avril 2013. Lire la suite : http://www.openaccesspublishing.org/2013/04/27/34/

Article accepté pour publication dans Journals of Infometrics http://www.sciencedirect.com/science/article/pii/S175115771300028

The study documents the growth in the number of journals and articles along with the increase in normalized citation rates of open access (OA) journals listed in the Scopus bibliographic database between 1999 and 2010. Longitudinal statistics on growth in journals/articles and citation rates are broken down by funding model, discipline, and whether the journal was launched or had converted to OA. The data were retrieved from the web sites of SCIMago Journal and Country Rank (journal /article counts), JournalM3trics (SNIP2 values), Scopus (journal discipline) and Directory of Open Access Journals (DOAJ) (OA and funding status). OA journals/articles have grown much faster than subscription journals but still make up less that 12% of the journals in Scopus. Two-year citation averages for journals funded by article processing charges (APCs) have reached the same level as subscription journals. Citation averages of OA journals funded by other means continue to lag well behind OA journals funded by APCs and subscription journals. We hypothesize this is less an issue of quality than due to the fact that such journals are commonly published in languages other than English and tend to be located outside the four major publishing countries.

Lire la suite : http://www.openaccesspublishing.org/2013/04/27/34/