In recent years, the relationship of collaboration among scientists and the citation impact of papers have been frequently investigated. Most of the studies show that the two variables are closely related: an increasing collaboration activity (measured in terms of number of authors, number of affiliations, and number of countries) is associated with an increased citation impact. However, it is ...

Many studies show that open access (OA) articles-articles from scholarly journals made freely available to readers without requiring subscription fees-are downloaded, and presumably read, more often than closed access/subscription-only articles. Assertions that OA articles are also cited more often generate more controversy. Confounding factors (authors may self-select only the best articles to...

nursing research in the middle east: a multi-layer bibliometric study rashidi a * received: 12 aug , 2013 accepted: 26 oct , 2013 abstract background & aims: nurses along with other clinical professions play important role on people's health around the world. however various bibliometric analysis in medical care have shown a notable level of sophistication, a few bibliometric analysis has ...

Eysenbach has suggested that the OA (Green) self-archiving advantage might just be an artifact of potential uncontrolled confounding factors such as article age (older articles may be both more cited and more likely to be self-archived), number of authors (articles with more authors might be more cited and more self-archived), subject matter (the subjects that are cited more, self-archive more)...

In this study, the authors have three objectives: 1. To make aggregated journal-journal citation networks based on the Journal Citation Reports 2004 of the Science Citation Index (5968 journals) and the Social Science Citation Index (1712 journals) accessible online from the perspective of any of these journals. The results are available at http://www.leydesdorff.net/jcr04 as input-files for th...