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Abstract  

The aim of this study is to contribute to the debate on the relationship between scientific mobility and international collaboration. This case study deals with leading Chinese researchers in the field of plant molecular life sciences who returned to their home country. A correlation analysis of their mobility history, publication output, and international co-publication data, shows the relationship between scientific output, levels of international collaboration and various individual characteristics of returned researchers. The outcome of the analysis suggests that while host countries may loose human capital when Chinese scientists return home, the so-called “return brain drain”, they may also gain in terms of scientific linkages within this rapidly emerging and globalizing research field.

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Summary  

This paper examines the extent of the 'home advantage' effect in the USPTO and the EPO patent data and in the OECD triadic patent families. By comparing a set of internationalisation indicators for a sample of European, US and Japanese MNEs it finds that, contrary to what is often assumed, this effect is not only present in the USPTO but also in the EPO. OECD triadic patent data, instead, are not biased towards any particular home country. It also finds that, because MNEs do not systematically file their patents with the EPO, the USPTO and the JPO, the OECD triadic patent family dataset excludes many patents, especially those invented in the US and accounted for in the USPTO, though it is mainly only low-value patents that are excluded. Thus OECD triadic patents can be considered a satisfactory alternative to the USPTO and the EPO for measuring R&D internationalisation.

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lag, patent cohort and country (Jaffe and Trajtenberg 1999 ). A second bias relates to localization or distance (i.e., the propensity to cite patents originating from the same geographical area). This relates to the ‘home bias’ that describes the

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a new and clearly visible rising trend of patent ownership in the home country as well as the premier global patenting System like of WIPO-PCT and US-PTO. Improved technological capability is also reflected in terms of the ability of India to raise

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meritocracy, bureaucratization and so on). In a previous survey we studied the behavior of Italian researchers who decide to emigrate to another country to ascertain the push and pull factors and to investigate their willingness to return home after a

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Scientometrics 53 281 – 296 . home.html. NII ( 2003b ), NACSIS-IR homepage . Available: http

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References Bar-Ilan , J. 2002 How much information search engines disclose on the links to a Web page? — A longitudinal case study of the ‘Cybermetrics' home page

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‘Cybermetrics' home page Journal of Information Science 28 6 455 – 466 . Bjorneborn , L. Ingwersen , P

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. Bates , M. J. Lu , S. 1997 An explanatory profile of personal home pages: content, design, metaphors Online & CDROM Review 21 6

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Obituary

Jan Vlachý (1937–2010)

Scientometrics
Author: Hans-Jürgen Czerwon

better. He had at home a huge archive of reprints, books and a collection of documents for statistical analyses, especially in physics. Jan has compiled the data exclusively from the printed versions of databases (e.g. Physics Abstracts , Physics Briefs

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