Authors:Zaida Chinchilla-Rodríguez, Anuska Ferligoj, Sandra Miguel, Luka Kronegger, and Félix de Moya-Anegón
The paper introduces the use of blockmodeling in the micro-level study of the internal structure of co-authorship networks over time. Variations in scientific productivity and researcher or research group visibility were determined by observing authors’ role in the core-periphery structure and crossing this information with bibliometric data. Three techniques were applied to represent the structure of collaborative science: (1) the blockmodeling; (2) the Kamada-Kawai algorithm based on the similarities in co-authorships present in the documents analysed; (3) bibliometrics to determine output volume, impact and degree of collaboration from the bibliographic data drawn from publications. The goal was to determine the extent to which the use of these two complementary approaches, in conjunction with bibliometric data, provides greater insight into the structure and characteristics of a given field of scientific endeavour. The paper describes certain features of Pajek software and how it can be used to study research group composition, structure and dynamics. The approach combines bibliometric and social network analysis to explore scientific collaboration networks and monitor individual and group careers from new perspectives. Its application on a small-scale case study is intended as an example and can be used in other disciplines. It may be very useful for the appraisal of scientific developments.
Authors:Félix de Moya-Anegón, Zaida Chinchilla-Rodríguez, Benjamín Vargas-Quesada, Elena Corera-Álvarez, Francisco Muñoz-Fernández, Antonio González-Molina, and Victor Herrero-Solana
Our aim is to compare the coverage of the Scopus database with that of Ulrich, to determine just how homogenous it is in the
academic world. The variables taken into account were subject distribution, geographical distribution, distribution by publishers
and the language of publication. The analysis of the coverage of a product of this nature should be done in relation to an
accepted model, the optimal choice being Ulrich’s Directory, considered the international point of reference for the most
comprehensive information on journals published throughout the world. The results described here allow us to draw a profile
of Scopus in terms of its coverage by areas — geographic and thematic — and the significance of peer-review in its publications.
Both these aspects are highly pragmatic considerations for information retrieval, the evaluation of research, and the design
of policies for the use of scientific databases in scientific promotion.