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Abstract

In this paper we continue our investigation of the micro-structure of the Matthew effect for countries (MEC). After the recent identification of a new type of scientific journal, the Matthew core journal (MCJ), we study the relations of MCJ to other types of core journals - publication, citation, and participation core journals. 144 MCJ out of 2712 SCI-journals in our sample account for half of the MEC. A typology of the MCJ can be established. The exclusive role of the MCJ consists in carrying a high number of Matthew citations due to the competition of many countries for a high impact of their papers. The research fronts in science are "boiling" in the MCJ. The 144 MCJ are sufficient to construct a country rank distribution that reflects world science performance

Source

Globalisierung und Wissensorganisation: Neue Aspekte für Wissen, Wissenschaft und Informationssysteme: Proceedings der 6. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation Hamburg, 23.-25.9.1999. Hrsg.: H.P. Ohly, G. Rahmstorf u. A. Sigel

Type

a

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Type

a

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Abstract

The Matthew effect for countries (MEC) consists of the systematic deviation in the number of actual (observed) citations from the number of expected citations: A few countries, expecting a high impact (i.e., a high number of cites per paper) receive a surplus of citations, while the majority of countries, expecting a lower impact, lose citations. The MEC is characterized by numerous facets, but two are the most impressive. The first is the possibility of ranking the science nations by their overall efficiency of scientific performance, thus making the MEC attractive for science policy. The second is the concentration of the MEC in a small number of scientific journals which happen to be the most competitive markets for scientific papers and, therefore, are of interest to librarians as well as scientists. First, by using an appropriate measure for the above-mentioned deviation of the observed from the expected citation rate one can bring the countries under investigation into a rank order, which is almost stable over time and independent of the main scientific fields and the size (i.e., publication output) of the participating countries. Metaphorically speaking, this country rank distribution shows the extent to which a country is using its scientific talents. This is the first facet of the MEC. The second facet appears when one studies the mechanism (i.e., microstructure) of the MEC. Every journal contributes to the MEC. The "atoms" of the MEC are redistributed citations, whose number turns out to be a new and sensitive indicator for any scientific journal. Bringing the journals into a rank order according to this indicator, one finds that only 144 journals out of 2,712 contain half of all redistributed citations, and thus account for half of the MEC. We give a list of these "Matthew core journals" (MCJ) together with a new typology relating the new indicator to the well-known ones, such as publication or citation numbers. It is our hypothesis that the MCJ are forums of the fiercest competition in science--the "Olympic games in science" proceed in this highest class of scientific journals.

Type

a

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Abstract

Presents a feature of information science implemented for the 1st time by the offer of Science Citation Index (SCI) on CD-ROM: the implementation of the so-called bibliographic linking in a commercial data base. Discusses the difference between cocitation linking and bibliographic linking, and illustrates the implementation within the SCI data base by means of an example.

Type

a

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Type

a