Author-level metrics

It presents information on Bibliometric indicators of scientific productivity
Portal SISBI
29/03/2018 - 16:51 - updated 29/03/2018 - 16:51
Target audience: 
Student / Professor / Admnistrative technician / External community
Subject matter: 


Índice H

The h-index was developed by J. E. Hirsch from University of California in 2005 as a tool to combine quantity and quality of academic output. It is defined as the largest "h" number of articles of a given researcher, who has at least the same "h" number of quotations each. To achieve a high index h it is necessary that, besides publishing a lot of articles, a great number of those published articles have individually a high index of quotation. For example, an h-index of 40 means that, of a researcher's entire scientific output, 40 titles have 40 or more citations. This measure disregards the asymmetric value of highly cited articles or those that have not yet been cited. 

Index H can be acquired by consulting Web of Science or Scopus data base available at Portal Capes, searching by author’s name that one wants to know the index and determined the period that one wants to evaluate.

In Web of Science search results, click on "Create Quotation Report". In the "Results analysis" option you can check the sources in which the Papers were published, dates, research areas and other information. 

In Scopus search results, click on 'View quotation overview.' As in the analysis are considered only the works of the sources indexed in the base, it can occur differences between the indexes obtained in Web of Science and Scopus.


Impact Factor

Created by Eugene Garfield, founder of the Institute for Scientific Information (ISI), the Impact Factor (IF) is the citation average of articles in a given journal calculated from the number of citations of articles in this title in a given year, published in previous biennium, divided by the total number of articles published in it, in this biennium.  

Example: To know the impact factor of the periodical X in the year 2012, it is necessary to add the number of citations of your articles made that year, the publications of 2010 and 2011 and divide by the total of articles published in periodical X in these two years. Assuming that 27 articles in this journal published in 2010 had 215 citations in 2012 and 35 articles in 2011 had 247 citations in 2012, one can obtain the impact factor of this title in the year of 2012, adding up the amount of Citations that the title received this year, referring to the articles of 2010 and 2011, which in this case results in 462 and divide by the total number of articles published in these two years that would be 62.

Calculation: 462/62 = 7,4516129 

Which means that on average each article published in periodical X in the period 2010/2011 was quoted 7, 451 times in 2012.

The Journal Citation Report (JCR) database of Thomson Reuters available on Portal Capes provides the Impact Factor for journals indexed by the Web of Science databases, also available on Capes Portal. You can search the JCR Science Edition or JCR Social Science Edition editions by determining the year of the impact factor you want in the options:        

  • Group of journals by area of knowledge, publisher or country of publication;    
  • Specific periodical title;;    
  • All indexed titles in the Web of Science database.


Qualis (CAPES)

Application that allows to classify and consult Qualis (Classification of vehicles disseminators of scientific production, by area of knowledge in CAPES *). The classification is divided into eight strata presented in descending order of value namely:

  • A1, the highest
  • A2 
  • B1
  • B2
  • B3
  • B4
  • B5
  • C, with zero weight.  

It offers:

  • The classification of journals by ISSN, title, classification / evaluation area and complete list of titles;       
  • QUALIS criteria by area of knowledge in the periods 2007/2009 and 2010/2012;
  • E-mail from the coordinators of evaluation areas commissions

* Coordination of Improvement of Higher Level Personnel