Lutz Bornmann


2019

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Statistical significance and effect sizes of differences among research universities at the level of nations and worldwide based on the leiden rankings
Loet Leydesdorff | Lutz Bornmann | John Mingers
2019 Volume 70 Issue 5

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The Relative Influences of Government Funding and International Collaboration on Citation Impact
Loet Leydesdorff | Lutz Bornmann | Caroline S. Wagner
2019 Volume 70 Issue 2

2018

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"Smart girls" versus "sleeping beauties" in the sciences: The identification of instant and delayed recognition by using the citation angle
Fred Y. Ye | Lutz Bornmann
2018 Volume 69 Issue 3

2017

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Relative Citation Ratio (RCR): An empirical attempt to study a new field-normalized bibliometric indicator
Lutz Bornmann | Robin Haunschild
2017 Volume 68 Issue 4

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Is collaboration among scientists related to the citation impact of papers because their quality increases with collaboration? An analysis based on data from F1000Prime and normalized citation scores
Lutz Bornmann
2017 Volume 68 Issue 4

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An empirical look at the nature index
Lutz Bornmann | Robin Haunschild
2017 Volume 68 Issue 3

2016

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Highly cited papers in Library and Information Science (LIS): Authors, institutions, and network structures
Johann Bauer | Loet Leydesdorff | Lutz Bornmann
2016 Volume 67 Issue 12

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Overlay maps based on Mendeley data: The use of altmetrics for readership networks
Lutz Bornmann | Robin Haunschild
2016 Volume 67 Issue 12

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What do altmetrics counts mean? A plea for content analyses
Lutz Bornmann
2016 Volume 67 Issue 4

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A new approach to the QS university ranking using the composite I-distance indicator: Uncertainty and sensitivity analyses
Marina Dobrota | Milica Bulajic | Lutz Bornmann | Veljko Jeremic
2016 Volume 67 Issue 1

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How much does the expected number of citations for a publication change if it contains the address of a specific scientific institute? A new approach for the analysis of citation data on the institutional level based on regression models
Lutz Bornmann
2016 Volume 67 Issue 9

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Replicability and the public/private divide
Loet Leydesdorff | Caroline S. Wagner | Lutz Bornmann
2016 Volume 67 Issue 7

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The operationalization of "fields" as WoS subject categories (WCs) in evaluative bibliometrics: The cases of "library and information science" and "science & technology studies"
Loet Leydesdorff | Lutz Bornmann
2016 Volume 67 Issue 3

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The application of bibliometrics to research evaluation in the humanities and social sciences: An exploratory study using normalized Google Scholar data for the publications of a research institute
Lutz Bornmann | Andreas Thor | Werner Marx | Hermann Schier
2016 Volume 67 Issue 11

2015

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Distribution of women and men among highly cited scientists
Lutz Bornmann | Johann Bauer | Robin Haunschild
2015 Volume 66 Issue 12

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How well does a university perform in comparison with its peers? The use of odds, and odds ratios, for the comparison of institutional citation impact using the Leiden Rankings
Lutz Bornmann | Rüdiger Mutz
2015 Volume 66 Issue 12

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Interrater reliability and convergent validity of F1000Prime peer review
Lutz Bornmann
2015 Volume 66 Issue 12

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Complex tasks and simple solutions: The use of heuristics in the evaluation of research
Lutz Bornmann
2015 Volume 66 Issue 8

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Nature's top 100 revisited
Lutz Bornmann
2015 Volume 66 Issue 10

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Which of the world's institutions employ the most highly cited researchers? An analysis of the data from highlycited.com
Lutz Bornmann | Johann Bauer
2015 Volume 66 Issue 10

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BRICS countries and scientific excellence: A bibliometric analysis of most frequently cited papers
Lutz Bornmann | Caroline S. Wagner | Loet Leydesdorff
2015 Volume 66 Issue 7

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Testing for the fairness and predictive validity of research funding decisions: A multilevel multiple imputation for missing data approach using ex-ante and ex-post peer evaluation data from the Austrian science fund
Rüdiger Mutz | Lutz Bornmann | Hans-Dieter Daniel
2015 Volume 66 Issue 11

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Growth rates of modern science: A bibliometric analysis based on the number of publications and cited references
Lutz Bornmann | Rüdiger Mutz
2015 Volume 66 Issue 11

2014

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Is there currently a scientific revolution in Scientometrics?
Lutz Bornmann
2014 Volume 65 Issue 3

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Do we still need peer review? An argument for change - By T.H.P. Gould
Lutz Bornmann
2014 Volume 65 Issue 1

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Distributions instead of single numbers: Percentiles and beam plots for the assessment of single researchers
Lutz Bornmann | Werner Marx
2014 Volume 65 Issue 1

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On the function of university rankings
Lutz Bornmann
2014 Volume 65 Issue 2

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The reception of publications by scientists in the early days of modern science
Lutz Bornmann
2014 Volume 65 Issue 10

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On scientific misconduct
Harry Collins | Lutz Bornmann
2014 Volume 65 Issue 5

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From P100 to P100': A new citation-rank approach
Lutz Bornmann | Rüdiger Mutz
2014 Volume 65 Issue 9

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On the problems of dealing with bibliometric data
Werner Marx | Lutz Bornmann
2014 Volume 65 Issue 4

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Detecting the historical roots of research fields by reference publication year spectroscopy (RPYS)
Werner Marx | Lutz Bornmann | Andreas Barth | Loet Leydesdorff
2014 Volume 65 Issue 4

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What proportion of excellent papers makes an institution one of the best worldwide? Specifying thresholds for the interpretation of the results of the SCImago Institutions Ranking and the Leiden Ranking
Lutz Bornmann | Félix de Moya Anegón
2014 Volume 65 Issue 4

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The wisdom of citing scientists
Lutz Bornmann | Werner Marx
2014 Volume 65 Issue 6

2013

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Multilevel-statistical reformulation of citation-based university rankings: The Leiden ranking 2011/2012
Lutz Bornmann | Rüdiger Mutz | Hans-Dieter Daniel
2013 Volume 64 Issue 8

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The problem of percentile rank scores used with small reference sets
Lutz Bornmann
2013 Volume 64 Issue 3

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How to analyze percentile citation impact data meaningfully in bibliometrics: The statistical analysis of distributions, percentile rank classes, and top-cited papers
Lutz Bornmann
2013 Volume 64 Issue 3

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How can journal impact factors be normalized across fields of science? An assessment in terms of percentile ranks and fractional counts
Loet Leydesdorff | Ping Zhou | Lutz Bornmann
2013 Volume 64 Issue 1

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What is societal impact of research and how can it be assessed? a literature survey
Lutz Bornmann
2013 Volume 64 Issue 2

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Do Universities or Research Institutions With a Specific Subject Profile Have an Advantage or a Disadvantage in Institutional Rankings? A Latent Class Analysis With Data From the SCImago Ranking
Lutz Bornmann | Félix de Moya Anegón | Rüdiger Mutz
2013 Volume 64 Issue 11

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Field-normalized impact factors (IFs): A comparison of rescaling and fractionally counted IFs
Loet Leydesdorff | Filippo Radicchi | Lutz Bornmann | Claudio Castellano | Wouter de Nooy
2013 Volume 64 Issue 11

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Statistical tests and research assessments: A comment on Schneider (2012)
Lutz Bornmann | Loet Leydesdorff
2013 Volume 64 Issue 6

2012

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Percentile ranks and the integrated impact indicator (I3)
Loet Leydesdorff | Lutz Bornmann
2012 Volume 63 Issue 9

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The Anna Karenina principle: A way of thinking about success in science
Lutz Bornmann | Werner Marx
2012 Volume 63 Issue 10

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Mapping (USPTO) patent data using overlays to Google Maps
Loet Leydesdorff | Lutz Bornmann
2012 Volume 63 Issue 7

2011

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Is interactive open access publishing able to identify high-impact submissions? A study on the predictive validity of Atmospheric Chemistry and Physics by using percentile rank classes
Lutz Bornmann | Hermann Schier | Werner Marx | Hans-Dieter Daniel
2011 Volume 62 Issue 1

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Do we need the E-index in addition to the h-index and its variants?
Lutz Bornmann
2011 Volume 62 Issue 7

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Turning the tables on citation analysis one more time: Principles for comparing sets of documents
Loet Leydesdorff | Lutz Bornmann | Rüdiger Mutz | Tobias Opthof
2011 Volume 62 Issue 7

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Integrated impact indicators compared with impact factors: An alternative research design with policy implications
Loet Leydesdorff | Lutz Bornmann
2011 Volume 62 Issue 11

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How fractional counting of citations affects the impact factor: Normalization in terms of differences in citation potentials among fields of science
Loet Leydesdorff | Lutz Bornmann
2011 Volume 62 Issue 2

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Which cities produce more excellent papers than can be expected? A new mapping approach, using Google Maps, based on statistical significance testing
Lutz Bornmann | Loet Leydesdorff
2011 Volume 62 Issue 10

2010

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Reference standards and reference multipliers for the comparison of the citation impact of papers published in different time periods
Werner Marx | Lutz Bornmann | Manuel Cardona
2010 Volume 61 Issue 10

2009

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Do we need the h index and its variants in addition to standard bibliometric measures?
Lutz Bornmann | Rüdiger Mutz | Hans-Dieter Daniel
2009 Volume 60 Issue 6

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Universality of citation distributions-A validation of Radicchi et al.'s relative indicator c_ = c/c_ at the micro level using data from chemistry
Lutz Bornmann | Hans-Dieter Daniel
2009 Volume 60 Issue 8

2008

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Are there better indices for evaluation purposes than the h index? A comparison of nine different variants of the h index using data from biomedicine
Lutz Bornmann | Rüdiger Mutz | Hans-Dieter Daniel
2008 Volume 59 Issue 5

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Selecting manuscripts for a high-impact journal through peer review: A citation analysis of communications that were accepted by Angewandte Chemie International Edition, or rejected but published elsewhere
Lutz Bornmann | Hans-Dieter Daniel
2008 Volume 59 Issue 11

2007

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Multiple publication on a single research study: Does it pay? The influence of number of research articles on total citation counts in biomedicine
Lutz Bornmann | Hans-Dieter Daniel
2007 Volume 58 Issue 8

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What do we know about the h index?
Lutz Bornmann | Hans-Dieter Daniel
2007 Volume 58 Issue 9
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