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Abstract  

This paper is proposing a new index for international scientific co-authorship, which is based on a simple model of domestic and international co-authorships. The index draws a modestly different picture of international collaboration, concerning a country"s size effect on the likelihood of internationally co-authored papers.

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Summary  

The macro-level country-by-country co-authorship, cross-reference and cross-citation analysis started in our previous paper,1 continues with revealing the cross-national preference stucture of the 36 selected countries. Preference indicators of co-authorship, cross-reference and cross-citation are defined, presented and discussed. The study revealed that geopolitical location, cultural relations and language are determining factors in shaping preferences whether in co-authorship, cross-reference or cross-citation. Areas like Central Europe, Scandinavia, Latin America (supplemented with Spain and Portugal), the Far East or the Australia-New Zealand-South Africa triad form typical “clusters” with mutually strong preferences towards each other. The USA appears to have a distinguished role enjoying universal preference, which - in the cross-reference and cross-citation case - is asymmetric for the greater part of the countries under study.

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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.

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Abstract  

We analyse the co-authorship networks of researchers affiliated at universities in Turkey by using two databases: the international SSCI database and the Turkish ULAKBIM database. We find that co-authorship networks are composed largely of isolated groups and there is little intersection between the two databases, permitting little knowledge diffusion. There seems to be two disparate populations of researchers. While some scholars publish mostly in the international journals, others target the national audience, and there is very little intersection between the two populations. The same observation is valid for universities, among which there is very little collaboration. Our results point out that while Turkish social sciences and humanities publications have been growing impressively in the last decade, domestic networks to ensure the dissemination of knowledge and of research output are very weak and should be supported by domestic policies.

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Scientometrics
Authors:
Antonio Perianes-Rodríguez
,
Carlos Olmeda-Gómez
, and
Félix Moya-Anegón

Abstract  

The present paper proposes a method for detecting, identifying and visualizing research groups. The data used refer to nine Carlos III University of Madrid departments, while the findings for the Communication Technologies Department illustrate the method. Structural analysis was used to generate co-authorship networks. Research groups were identified on the basis of factorial analysis of the raw data matrix and similarities in the choice of co-authors. The resulting networks distinguished the researchers participating in the intra-departmental network from those not involved and identified the existing research groups. Fields of research were characterized by the Journal of Citation Report subject category assigned to the bibliographic references cited in the papers written by the author-factors. The results, i.e., the graphic displays of the structures of the socio-centric and co-authorship networks and the strategies underlying collaboration among researchers, were later discussed with the members of the departments analyzed. The paper constitutes a starting point for understanding and characterizing networking within research institutions.

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Abstract  

Scientific outputs from Serbia, Croatia and Slovenia, and the patterns of co-authorship between them and five western countries and with each other have been determined from theScience Citation Index. They reflect accurately the political situation underlying the recent break-up of the former Yugoslavia, and long-term international alliances and friendships, but also take account of geographical proximity, which assists scientific co-operation. There is no evidence of changes in the ethnic composition of Serbian and Croatian scientists overall, as revealed by the names of their researchers before and after the civil war. However some changes appear to have taken place in Serbia outwith Belgrade, which are consistent with the reports of the expulsion of Croats living in Vojvodina.

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Abstract  

An attempt is made to find statistical evidences of the relation between international co-authorship and citation impact. It was found that international co-authorship, in average, results inpublications with higher citation rates than purely domestic papers. No correlation has beenfound, however, between the strength of co-authorship links and the relative citation eminence ofthe resulting publications. International co-authorship links in chemistry, as represented by thewell-known Salton's measure, displayed a characteristic pattern reflecting geopolitical, historical,linguistic, etc. relations among countries. A new indicator, representing also the asymmetry ofco-authorship links was used to reveal main "attractive" and "repulsive" centres of co-operation.

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Abstract  

This paper studies cooperation patterns in Spain between science history researchers by analysing co-authorship in the scientific publications of the Social Science Citation Index (SSCI) and the Science Citation Index (SCI) databases.

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Summary  

Analysing co-authored publications has become the standard way to measure research collaborations. At the same time bibliometric researchers have advised that co-authorship based indicators should be handled with care as a source of evidence on actual scientific collaboration. The aim of this study is to assess how well university-industry collaborations can be identified and described using co-authorship data. This is done through a comparison of co-authorship data with industrial funding to a medical university. In total 436 companies were identified through the two methods. Our results show that one third of the companies that have provided funding to the university had not co-authored any publications with the university. Further, the funding indicator identified only 16% of the companies that had co-authored publications. Thus, both co-authorship and funding indicators provide incomplete results. We also observe a case of conflicting trends between funding and co-authorship indicators. We conclude that uncritical use of the two indicators may lead to misinterpretation of the development of collaborations and thus provide incorrect data for decision-making.

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Abstract  

This paper investigates factors behind co-authorships between scientists in Iran and elsewhere. It also compares the Iranian pattern of collaboration with other countries. A questionnaire was sent out to Iranian scientists in fields of physics, chemistry, and biology who had published an internationally co-authored journal article during 2003. The results show that not all co-authored articles were the result of a collaborative project. Also, the main collaborative motives behind the co-authorships were identified and described. Among these, we could mention sharing laboratory devices, accessing knowledge, and increased efficiency of the study at hand. It is clear that emigrated Iranian scientists play an important role as collaborators and probably also as links to the international scientific community as a whole. Cultural factors mix with scientific and work related ones. Although the proportion of international co-authorships is lower than in most other countries, the collaborative pattern seems rather similar.

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