, Volume 51, Issue 1, pp 69-115

National characteristics in international scientific co-authorship relations

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Abstract

The main objective of this study is the elaboration of national characteristics in internationalscientific co-authorship relations. An attempt is made to find statistical evidence of symmetry andasymmetry in co-publication links, of the relation between international co-authorship and bothnational research profiles and citation impact. Four basic types can be distinguished in the relativespecialisation of domestic and internationally co-authored publications of 50 most activecountries in 1995/96 concerning the significance of the difference between the two profiles.

Co-publication maps reveal structural changes in international co-authorship links in the lastdecade. Besides stable links and coherent clusters, new nodes and links have also been found. Notall links between individual countries are symmetric. Specific (unidirectional) co-authorshipaffinity could also be detected in several countries.

As expected, international co-authorship, on an average, results in publications with highercitation rates than purely domestic papers. However, the influence of international collaborationon the national citation impact varies considerably between the countries (and within oneindividual country between fields). In some cases there is, however, no citation advantage for oneor even for both partners.