2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of AmsterdamNL104 papers
- Vrije Universiteit AmsterdamNL20 papers
- Radboud University NijmegenNL9 papers
- Amsterdam University CollegeNL8 papers
- Max Planck InnovationDE8 papers
- Centre National de la Recherche ScientifiqueFR7 papers
- Amsterdam NeuroscienceNL6 papers
- Max Planck SocietyDE6 papers
- KU LeuvenBE5 papers
- National Institute for Subatomic PhysicsNL5 papers
- The Ohio State UniversityUS5 papers
- University of OxfordGB5 papers
8 papers · 2 filters
How have the Eastern European countries of the former Warsaw Pact developed since 1990? A bibliometric study
Marcin Kozak, Lutz Bornmann, Loet Leydesdorff
Did the demise of the Soviet Union in 1991 influence the scientific performance of the researchers in Eastern European countries? Did this historical event affect international col…
How to improve the prediction based on citation impact percentiles for years shortly after the publication date?
Lutz Bornmann, Loet Leydesdorff, Jian Wang
The findings of Bornmann, Leydesdorff, and Wang (in press) revealed that the consideration of journal impact improves the prediction of long-term citation impact. This paper furthe…
Journal Maps, Interactive Overlays, and the Measurement of Interdisciplinarity on the Basis of Scopus Data (1996-2012)
Loet Leydesdorff, Félix de Moya-Anegón, Vicente P. Guerrero-Bote
Using Scopus data, we construct a global map of science based on aggregated journal-journal citations from 1996-2012 (N of journals = 20,554). This base map enables users to overla…
Detecting the historical roots of research fields by reference publication year spectroscopy (RPYS)
Werner Marx, Lutz Bornmann, Andreas Barth +1
We introduce the quantitative method named "reference publication year spectroscopy" (RPYS). With this method one can determine the historical roots of research fields and quantify…
The "Academic Trace" of the Performance Matrix: A Mathematical Synthesis of the h-Index and the Integrated Impact Indicator (I3)
Fred Y. Ye, Loet Leydesdorff
The h-index provides us with nine natural classes which can be written as a matrix of three vectors. The three vectors are: X=(X1, X2, X3) indicate publication distribution in the…
Which percentile-based approach should be preferred for calculating normalized citation impact values? An empirical comparison of five approaches including a newly developed citation-rank approach (P100)
Lutz Bornmann, Loet Leydesdorff, Jian Wang
Percentile-based approaches have been proposed as a non-parametric alternative to parametric central-tendency statistics to normalize observed citation counts. Percentiles are base…
International Co-authorship Relations in the Social Science Citation Index: Is Internationalization Leading the Network?
Loet Leydesdorff, Han Woo Park, Caroline Wagner
We analyze international co-authorship relations in the Social Science Citation Index 2011 using all citable items in the DVD-version of this index. Network statistics indicate fou…
Group-Based Trajectory Modeling of Citations in Scholarly Literature: Dynamic Qualities of "Transient" and "Sticky Knowledge Claims"
Susanne Baumgartner, Loet Leydesdorff
Group-based Trajectory Modeling (GBTM) is applied to the citation curves of articles in six journals and to all citable items in a single field of science (Virology, 24 journals),…