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). Although bibliometric co-authorship research clearly does not provide a complete view of the scientific collaboration process—since working together does not automatically imply a partnership in publication—it is still widely used. Indicators obtained in

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Abstract  

In recent papers, the authors have studied basic regularities of author self-citations. The regularities are related to the ageing, to the relation between self-citations and foreign citations and to the interdependence of self-citations with other bibliometric indicators. The effect of multi-authorship on citation impact has been shown in other bibliometric studies, for instance, by Persson et al. (2004). The question arises whether those regularities imply any relation between number of co-authors and the extent of author self-citations. The results of the present paper confirm the common notion of such effects only in part. The authors show that at the macro level multi-authorship does not result in any exaggerate extent of self-citations.

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Scientometrics
Authors:
Yan Wang
,
Yishan Wu
,
Yuntao Pan
,
Zheng Ma
, and
Ronald Rousseau
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Abstract  

In this paper a new author’s productivity index is introduced, namely the golden productivity index. The proposed index measures the productivity of an individual researcher evaluating the number of papers as well as the rank of co-authorship. It provides an efficient method to measure the author’s contribution in articles writing, compared to other ordinary methods. It gives emphasis to the first authors contributions due to the fact that traditionally the rank of each author shows the magnitude of his contribution in the article.

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? Trends in international co-authorship The total output of scholarly papers published by East-European scholars increased dramatically in the past 20 years (see Table 1 ). This growth has been fueled in part by the expansion of domestic

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Abstract

Knowledge flow between public and private sectors is widely recognized as a way to stimulate innovation and regional development, particularly in science parks. This work employs a bibliometric approach, based on patent citation, non-patent citation, and public–private co-authorship of scientific publications to measure the use of public research in Hsinchu Science Park (HSP) in Taiwan. The result shows that the number of jointly published papers has increased constantly, implying the collaboration between HSP and universities has become more common. However, from the aspect of co-patenting, patent citation, and non-patent reference, technological innovation stemming from public research needs to be enhanced.

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Scientometrics
Authors:
Stojan Pečlin
,
Primož Južnič
,
Rok Blagus
,
Mojca Čižek Sajko
, and
Janez Stare

type of collaboration in which scientists from different countries participate in a research project in a more or less equal manner. On the other hand, in asymmetrical research collaboration the co-authorship of papers represents a transfer of knowledge

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Abstract  

Results are presented of a study covering 1986–91 of the scientific output of Latin American nations. The distribution of the output within the countries is shown: in most countries there is a high concentration in the national capital. The papers co-authored with scientists from other countries are also examined. There has been a notable rise in both the number and proportion of papers co-authored within the region, with the USA and Canada, and, especially, with the countries of the European Community, where a programme of International Scientific Co-operation, to promote just such links, has been active since the mid-1980s in many Latin American countries.

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