Analysis of Co-Authorship Indicators, Betweenness Centrality and Structural Holes of the Iranian Nanotechnology Researchers in Science Citation Index (1991-2011)

Abstract

This research aimed to investigate Iranian papers on nanotechnology area against some scientometrics indicators such as most prolific, most cited and so on. The statistical population were all papers have been published by Iranian researchers on nanotechnology in the Science Citation Index (SCI) from 1991 to 7 August 2011 (4605 records) that has been done with the aim of identifying, the most prolific, most cited and most effect of Iranian nanotechnology scientists. The results showed that the collaborative index in per-document was 3.39. The highest collaborative index was in 1997 with six authors by per-document. Iranian nanotechnology researchers' degree of collaboration was 0.96 this indicates, greater tendency of nanotechnology authors towards co-authorship. Considering total collaboration coefficient (0.64), nanotechnology authors have shown tendency to production of scientific collaborative document. The highest collaboration coefficient (0.83) And the lowest collaboration coefficient (0.5) have been allocated to the 1997 and 1991 respectively.

Keywords

• science citation index
• collaboration coefficient
• degree of collaboration
• collaborative index
• co-authorship network
• betweenness centrality
• structural hole