345 citations · 2k across the 154 of their papers we have counts for
12 papers · 1 filter
Percentile Ranks and the Integrated Impact Indicator (I3)
Loet Leydesdorff, Lutz Bornmann
We tested Rousseau's (in press) recent proposal to define percentile classes in the case of the Integrated Impact Indicator (I3) so that the largest number in a set always belongs…
Testing Differences Statistically with the Leiden Ranking
Loet Leydesdorff, Lutz Bornmann
The Leiden Ranking 2011/2012 provides the Proportion top-10% publications (PP top 10%) as a new indicator. This indicator allows for testing the difference between two ranks for st…
The new Excellence Indicator in the World Report of the SCImago Institutions Rankings 2011
Lutz Bornmann, Felix de Moya-Anegón, Loet Leydesdorff
The new excellence indicator in the World Report of the SCImago Institutions Rankings (SIR) makes it possible to test differences in the ranking in terms of statistical significanc…
Mapping (USPTO) Patent Data using Overlays to Google Maps
Loet Leydesdorff, Lutz Bornmann
A technique is developed using patent information available online (at the US Patent and Trademark Office) for the generation of Google Maps. The overlays indicate both the quantit…
Which cities' paper output and citation impact are above expectation in information science? Some improvements of our previous mapping approaches
Lutz Bornmann, Loet Leydesdorff
Bornmann and Leydesdorff (in press) proposed methods based on Web-of-Science data to identify field-specific excellence in cities where highly-cited papers were published more freq…
Which are the best cities for psychology research worldwide? A map visualizing city ratios of observed and expected numbers of highly-cited papers
Lutz Bornmann, Loet Leydesdorff, Günter Krampen
We present scientometric results about world-wide centers of excellence in psychology. Based on Web of Science data, domain-specific excellence can be identified for cities where h…