• Publications
  • Influence
Do Altmetrics Work? Twitter and Ten Other Social Web Services
Altmetric measurements derived from the social web are increasingly advocated and used as early indicators of article impact and usefulness. Nevertheless, there is a lack of systematic scientificExpand
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Tweeting biomedicine: An analysis of tweets and citations in the biomedical literature
Data collected by social media platforms have been introduced as new sources for indicators to help measure the impact of scholarly research in ways that complement traditional citation analysis. Expand
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The Oligopoly of Academic Publishers in the Digital Era
The consolidation of the scientific publishing industry has been the topic of much debate within and outside the scientific community, especially in relation to major publishers’ high profit margins.Expand
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Bibliometrics: global gender disparities in science.
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Characterizing Social Media Metrics of Scholarly Papers: The Effect of Document Properties and Collaboration Patterns
A number of new metrics based on social media platforms—grouped under the term “altmetrics”—have recently been introduced as potential indicators of research impact. Despite their current popularity,Expand
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Self-Selected or Mandated, Open Access Increases Citation Impact for Higher Quality Research
We found that articles whose authors have supplemented subscription-based access to the publisher's version by self-archiving their own final draft to make it accessible free for all on the web (“Open Access”, OA) are cited significantly more than articles in the same journal and year that have not been made OA. Expand
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Benchmarking scientific output in the social sciences and humanities: The limits of existing databases
We examine the strong link between bibliometrics and the Thomson Scientific's database and review the differences in the production and diffusion of knowledge in the social sciences and humanities (SSH) and the natural sciences and engineering (NSE). Expand
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Comparing bibliometric statistics obtained from the Web of Science and Scopus
This paper uses macrolevel bibliometric indicators to compare results obtained from the WoS and Scopus. Expand
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Green and Gold Open Access Percentages and Growth, by Discipline
We compared the percent and growth rate of Green and Gold OA for 14 disciplines in two random samples of 1300 articles per discipline out of the 12,500 journals indexed by Thomson-Reuters-ISI using a robot that trawled the web for OA full-texts. Expand
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Scholarly use of social media and altmetrics: A review of the literature
Social media has become integrated into the fabric of the scholarly communication system in fundamental ways, principally through scholarly use of social media platforms and the promotion of new indicators based on these platforms. Expand
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