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Abstract

Seeks to describe the social networks, or invisible colleges, that make up a scientific speciality, in terms of mathematically precise sets generated by document citations and accessible through the Social Science Citation Index. The document and author sets that encompass a scientific specialty are the basis for some interdependent citation matrices. The method of construction of these sets and matrices is illustrated through an application to the literature on invisible colleges

Theme

Citation indexing

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Abstract

Presents a study of the production of scientific papers, coauthorships and R&D expenditures in the OECD countries. Discusses the distribution of papers in the journal 'Science' by OECD country in comparison with 'Science Citation Index' papers as a whole and compares these to the distribution of R&D investments

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Abstract

The collaborative pattern of all Nordic universities, as well as a few universities in the UK and the Netherlands, is analyzed using institutionally co-authored articles retrieved from Science Citation Index. The study shows that there are no major differences between universities of various size when it comes to the proportion of articles with internal, national, or international co-authorships. There are some country variations, but within each country, the differences among the universities are small, if any. When co-authorships were fractionalized according to the number of times a given university occurs among the addresses of an article, there were still no significant differences between universities of varying size. Since external collaboration, whether it is national or international, accounts for more than half of all articles produced by the universities, one is inclined to conclude that the universities function as a kind of cosmopolitan hotel housing nodes of scientific networks that are becoming increasingly international

Aid

Science Citation Index