The launching of Scopus and Google Scholar, and methodological developments in Social Network Analysis have made many more indicators for evaluating journals available than the traditional Impact Factor, Cited Half-life, and Immediacy Index of the ISI. In this study, these new indicators are compared with one another and with the older ones. Do the various indicators measure new dimensions of t...

In this study we present an application which can be accessed via www.excellence-networks.net and which represents networks of scientific institutions worldwide. The application is based on papers (articles, reviews and conference papers) published between 2007 and 2011. It uses (network) data, on which the SCImago Institutions Ranking is based (Scopus data from Elsevier). Using this data, inst...

Please cite this article as: Winck JC, Morais A. Factor de Impacto e Revista Portuguesa de Pneumologia: knockin’ on heaven’s door. Rev Port Pneumol. 2011; 17: 151—152. respiratory journals which is far from being a leading position. However, the calculated IF of other journals in our «league» like the Archivos de Bronconeumologia was 0.119 in 2000, and the first official IF in 2003 was 0.885. I...

Using data compiled for the SCImago Institutions Ranking, we look at whether the subject area type an institution (university or research-focused institution) belongs to (in terms of the fields researched) has an influence on its ranking position. We used latent class analysis to categorize institutions based on their publications in certain subject areas. Even though this categorization does n...

Despite its widespread acceptance in the scientific world, impact factor (IF) has been criticized recently on many accounts: including lack of quality assessment of the citations, influence of self citation, English language bias, etc. In the current study, we evaluated three indices of journal scientific impact: (IF), Eigenfactor Score (ES), and SCImago Journal rank indicator (SJR) of nuclear ...

background and objective: since it is essential for the research policy makers to acquire knowledge about the global ranks of their countries in in pathology and forensic medicine subject areas, scientometrics experts have been always ranking and analyzing countries on the basis of ‘total number of papers’, ‘total number of citations’ and ‘citations per paper’, etc. materials and methods: the ...

Abstract This work applies a factor analysis with VARIMAX rotation to develop bibliometric indicator, named the Weighted Factor Index, in order derive new classification for journals belonging certain category, alternative one provided by Journal Impact Factor. For this, 16 metrics from three different databases (Web of Science, Scopus and SCImago Rank) are considered. The Weighed Index entails...

introduction: in the current study, we compared h5-index provided by google scholar (gs), impact factor (if) provided by web of sciences (wos), and scimago journal rank indicator (sjr) provided by scopus for quality assessment of nuclear medicine journals. methods: 2013 h5-index, 2012 if, and 2011 sjr of nuclear medicine journals were extracted from their publishers namely gs, wos, and scopus....

The growing use of bibliometrics among researchers has showcased the emergence of various evaluators of scientific research at the author front as well as journal publishers. Several indices has been put forward since the importance of scientific evaluators has gained prominence. Among any such indices, h-index, g-index etc., has been widely used in literature. The regression analysis presented...

In this paper, we propose the V-index (or, Virtuosity index) as a novel metric to assess the scientific virtuosity of academics. This index can be applied to researchers and journals as well. In particular, we show that the V-index fills the gap of h-index and similar metrics in considering the self-citations of authors or journals. The paper provides with three real-world examples: in the firs...