We shall generalize the concept of our previous paper (Shirabe & Tomizawa, 2002), which proposed an index for international scientific co-authorship. Based on a simple model of domestic and international co-authorships, we focused on likelihood of overseas access to co-authorships in the paper. Here, in consideration of bidirectionality of international co-authorship, we shall extend our previous index to two symmetrical indices. The indices can draw a reasonably clear picture of international co-authorship, with regard to difference in patterns of international co-authorship among countries.
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.
The paper is introducing an economic method (interindustry relations analysis) into studies of autopoietic systems and shows its application to scientometrics, which can also be regarded as the analysis of autopoietic systems. The merit of the application is discussed, and the outline of the proof of a related theorem is suggested in the appendix.
An outcome of nuclear safety research (NSR) done by JAERI (Japan Atomic Energy Research Institute) was case studied by the
bibliometric method. (1) For LOCA (loss-of-coolant accident) a domestic share of JAERI in monoclinic research paper was 63%
at the past (20) 1978–1982 but was decreased to 40% at the present 1998–2002. For co-authored papers a domestic share between
JAERI and PS (public sectors) was zero at past (20) but increased to 4% at the present. Research cooperation is active between
Tokyo University and JAERI or between JAERI and Nagoya University. (2) It is revealed that LOCA outputs born by NSR-JAERI
reflected partly to those of the Safety Licensing Guidelines, however, a share of NSR-JAERI could not determined due to the
lack of necessary information in the Guideline.