چکیده:
Highly cited papers are mostly authored in international collaboration. It is
expected that co-authored papers bring more citations. On the other hand, it is
inevitable that a part of citations is self-citation. This study investigates 134 and
236 highly cited papers in Iran and Turkey, respectively, to determine the extent
to which highly cited papers are affected by author self-citation. A comparison
accross subject disciplines shows that highly cited papers in Clinical Medicine
(in Turky) and Physics (in Iran) received more citations than others while
Engineering stands at the top position based on author self-citation counts in
both countries. There is a significant relashionship between Iranian nationally
co-authored papers and author self-citation. But it is not true of Turkish
researchers. This indicates that Iranian contributors have more tendency toward
author self-citation than Turkish researchers. Consequently, the influence of
author self-citation on highly cited papers is to some extent a matter of citation
behavior.
خلاصه ماشینی:
A comparison accross subject disciplines shows that highly cited papers in Clinical Medicine (in Turky) and Physics (in Iran) received more citations than others while Engineering stands at the top position based on author self-citation counts in both countries.
Studies have shown the impact of self-citations on both journal impact factor and disciplines in different subject categories (Van Raan, 2008; Ghane, 2009; Ghane, 2010; Aksnes, 2003; Gami, Montori, Wilczynski & Hahnes, 2004; Snyder & Bonzi, 1998), but a few ones considered the highly cited papers (Aksnes, 2003), especially related to self-citation.
Since more highly cited papers are internationally co-authored (Persson, 2009) and author self- citations as a part of citations play a significant role in science evaluation, the present study aims to determine the influence of author self-citation (ASC) on HCPs at multicountry level relative to Iran and Turkey.
Consequently, in scientometric studies it is accepted that highly cited papers could be used for scientific excellence (Van Raan, 2000 in Aksnes, 2003) at national and international levels for researchers and their institutions.
Comparing number of highly cited papers in different fields in Iran and Turkey, Engineering has the first rank in both countries (459a & 36%, respectively).
The number of author self-citation more than 20 for highly cited papers is higher in Iran than Turkey (Figure I).
Table 1 Comparison of Citations and ASC in Iran and Turkey {مراجعه شود به فایل جدول الحاقی} The highly cited papers are mostly co-authored internationally (Aksnes, 2003).