The citations to a set of academic articles are typically unevenly shared, with many articles attracting few citations and few attracting many. It is important to know more precisely how citations are distributed in order to help statistical analyses of citations, especially for sets of articles from a single discipline and a small range of years, as normally used for research evaluation. This ...

The purpose of this study is to compare the changing behavior of two counting methods (whole counting and whole-normalized counting) and inflation rate at country level research productivity and impact. For this, publication data on tribology research published between 1998 and 2012 from SCOPUS has been used. Only internationally collaborated papers are considered for comparison between two cou...

a IASMA Research and Innovation Centre, Fondazione Edmund Mach, Environment and Natural Resources Area, Via E. Mach 1, 38010 S. Michele all'Adige, TN, Italy b Leibniz-Institute for Zoo and Wildlife Research (IZW), Evolutionary Genetics, Postfach 601103, 10252 Berlin, Germany c Gulf Coast Geospatial Center, The University of Southern Mississippi, 1203 Broad Ave, Gulfport, MS 39501, USA d Departm...

Many journals post accepted articles online before they are formally published in an issue. Early citation impact evidence for these articles could be helpful for timely research evaluation and to identify potentially important articles that quickly attract many citations. This article investigates whether Microsoft Academic can help with this task. For over 65,000 Scopus in-press articles from...

BACKGROUND Web of Science and Scopus are the leading databases of scholarly impact. Recent studies outside the field of nursing report differences in journal coverage and quality. PURPOSE A comparative analysis of nursing publications reported impact. METHOD Journal coverage by each database for the field of nursing was compared. Additionally, publications by 2014 nursing faculty were colle...

A new methodology is proposed for comparing Google Scholar (GS) with other citation indexes. It focuses on the coverage and citation impact of sources, indexing speed, and data quality, including the effect of duplicate citation counts. The method compares GS with Elsevier’s Scopus, and is applied to a limited set of articles published in 12 journals from six subject fields, so that its finding...

h-index retrieved by citation indexes (Scopus, Google scholar, and Web of Science) is used to measure the scientific performance and the research impact studies based on the number of publications and citations of a scientist. It also is easily available and may be used for performance measures of scientists, and for recruitment decisions. The aim of this study is to investigate the difference ...

Background: The purpose of this scientometric investigation was to analyze some features of the international scientific communications in the field of the diagnosis of obstructive sleep apnea. Methods: The publication output on this interdisciplinary topic that had been reflected in three data-bases (Web of Science, MEDLINE and Scopus) for the period from 2009 till 2013 was analyzed. The follo...