Centre for Science and Technology Studies Centre for Science and Technology Studies 2333AL Leiden Zuid Holland 31715273909

Centre for Science and Technology Studies

The Centre for Science and Technology Studies (CWTS) studies scientific research and its connections to technology, innovation, and society. Our research, bibliometric and scientometric tools, and evaluation expertise provide a solid basis for supporting research assessment and strategic decision making and for developing science policy.





  • Distance matters in a university's local outreach and regional impact

    Introducing a new indicator in the U-Multirank 2019 edition.

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  • Indicators for social good

    Research evaluation has a bad reputation. Scientists have long lamented that bibliometric indicators have not only ceased to provide meaningful information, but have served to distort the very mechanisms they intend to measure.

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  • Indicators of open access publishing in the CWTS Leiden Ranking 2019

    Open science is becoming a critical topic in the current science policy and research management landscape, in which open access (OA) is seen as the first necessary step forward towards an open work environment in modern day scholarly life. Given its importance, the inclusion of indicators on OA penetration is a natural step in the 2019 edition of the CWTS Leiden Ranking. Until now, university ranking producers have mostly focused their efforts on reporting regular performance indicators (publications, citations, awards, reputation surveys, etc.), leaving out this important new dimension of scholarly communication. In this post, we describe the methodological approach used for assigning the OA labels in the Leiden Ranking 2019. The Leiden Ranking is the first university ranking to include in a comprehensive manner the uptake of OA publishing by universities worldwide.

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