CWTS Working Paper Series

The aim of the CWTS Working Paper Series is to disseminate the research that is carried out at our institute. The series serves as an outlet for papers under review, for pre-print papers, and for background papers (e.g., supplementary material for which journals lack space). The series is distributed through the digital repository of Leiden University (openaccess.leidenuniv.nl).

2015

Survey on the Labour Market Position of PhD graduates: Development of a Novel Questionnaire
Cathelijn Waaijer, Rosalie. Belder, Cornelis van Bochove, Hans Sonneveld and Inge van der Weijden
CWTS-WP-2015-001
http://hdl.handle.net/1887/32604

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2014

Accountability in context: Effects of research evaluation systems on publication practices, disciplinary norms and individual working routines in the faculty of Arts of Uppsala University
Björn Hammarfelt and Sarah de Rijcke
CWTS-WP-2014-003
http://hdl.handle.net/1887/26056


CitNetExplorer: A new software tool for analyzing and visualizing citation networks
Nees Jan van Eck and Ludo Waltman
CWTS-WP-2014-002
http://hdl.handle.net/1887/25359


Do 'altmetrics' correlate with citations? Extensive comparison of altmetric indicators with citations from a multidisciplinary perspective 
Rodrigo Costas, Zohreh Zahedi and Paul Wouters
CWTS-WP-2014-001
http://hdl.handle.net/1887/23041

2013

Detection of different types of ‘talented’ researchers in the Life Sciences through bibliometric indicators: methodological outline  
Rodrigo Costas and Ed Noyons
CWTS-WP-2013-006
http://hdl.handle.net/1887/22165


A smart local moving algorithm for large-scale modularity-based community detection
Ludo Waltman and Nees Jan van Eck 
CWTS-WP-2013-005
http://hdl.handle.net/1887/21868


Conducting pro-social research: Cognitive diversity, research excellence and awareness about the social impact of research
Pablo D’Este, Oscar Llopis and Alfredo Yegros
CWTS-WP-2013-004
http://hdl.handle.net/1887/21419

 

F1000 recommendations as a new data source for research evaluation: A comparison with citations
Ludo Waltman and Rodrigo Costas
CWTS-WP-2013-003
http://hdl.handle.net/1887/20766

 

Counting publications and citations: Is more always better?
Ludo Waltman, Nees Jan van Eck, and Paul Wouters
CWTS-WP-2013-002
http://hdl.handle.net/1887/20468

 

A systematic empirical comparison of different approaches for normalizing citation impact indicators.
Ludo Waltman and Nees Jan van Eck
CWTS-WP-2013-001
http://hdl.handle.net/1887/20467
 

2012

Societal returns of scientific research. How can we measure it?
Ingeborg Meijer
CWTS-WP-2012-014
http://hdl.handle.net/1887/20385
 

Career policy and research output
Cornelis van Bochove
CWTS-WP-2012-013
http://hdl.handle.net/1887/20131
 

Citation analysis may severely underestimate the impact of clinical research as compared to basic research
Nees Jan van Eck, Ludo Waltman, Anthony F.J. van Raan, Robert J.M. Klautz, and Wilco C. Peul
CWTS-WP-2012-012
http://hdl.handle.net/1887/19924
 

Some modifications to the SNIP journal impact indicator
Ludo Waltman, Nees Jan van Eck, Thed N. van Leeuwen and Martijn S. Visser
CWTS-WP-2012-011
http://hdl.handle.net/1887/19815
 

Source normalized indicators of citation impact: An overview of different approaches and an empirical comparison
Ludo Waltman and Nees Jan van Eck
CWTS-WP-2012-010
http://hdl.handle.net/1887/19825
 

R&D globalization processes and university-industry research cooperation: measurement and indicators
Robert Tijssen 
CWTS-WP-2012-009
http://hdl.handle.net/1887/19352
 

On the calculation of percentile-based bibliometric indicators
Ludo Waltman and Michael Schreiber
CWTS-WP-2012-008
http://hdl.handle.net/1887/19354
 

The Leiden Ranking 2011/2012: Data collection, indicators, and interpretation
Ludo Waltman, Clara Calero-Medina, Joost Kosten, Ed C.M. Noyons, Robert J.W. Tijssen, Nees Jan van Eck, Thed N. van Leeuwen, Anthony F.J. van Raan, Martijn S. Visser, and Paul Wouters
CWTS-WP-2012-007
http://hdl.handle.net/1887/19353
 

A new methodology for constructing a publication-level classification system of science
Ludo Waltman and Nees Jan van Eck
CWTS-WP-2012-006
http://hdl.handle.net/1887/19351
 

An empirical analysis of the use of alphabetical authorship in scientific publishing
Ludo Waltman
CWTS-WP-2012-005
http://hdl.handle.net/1887/19350
 

Careers in science: Policy issues according to Nature and Science editorials
Cathelijn J.F. Waaijer
CWTS-WP-2012-004
http://hdl.handle.net/1887/20429
 

Basic Research and Prosperity: Sampling and Selection of Technological Possibilities and of Scientific Hypotheses as an Alternative Engine of Endogenous Growth
Cornelis A. van Bochove
CWTS-WP-2012-003
http://hdl.handle.net/1887/18636

 

Approaching the ‘Reward Triangle’: general analysis of the presence of funding acknowledgements and ‘peer interactive communication’ in scientific publications
Rodrigo Costas and Thed N. van Leeuwen
CWTS-WP-2012-002
http://hdl.handle.net/1887/18648

 

Referencing patterns of individual researchers: do top scientists rely on more extensive information sources?
Rodrigo Costas, Thed N. van Leeuwen, and María Bordons
CWTS-WP-2012-001
http://hdl.handle.net/1887/18674
 

2011

The inconsistency of the h-index
Ludo Waltman and Nees Jan van Eck
CWTS-WP-2011-008
http://hdl.handle.net/1887/18659
 

The “Mendel syndrome” in science: durability of scientific literature and its effects on bibliometric analysis of individual scientists
Rodrigo Costas, Thed van Leeuwen and Anthony F.J. van Raan
CWTS-WP-2011-007
http://hdl.handle.net/1887/18650
 

Book reviews in humanities research evaluations
Alesia Zuccala and Thed van Leeuwen
CWTS-WP-2011-006
http://hdl.handle.net/1887/17652

 

A recursive field-normalized bibliometric performance indicator: An application to the field of library and information science
Ludo Waltman, Erjia Yan, and Nees Jan van Eck
CWTS-WP-2011-005
http://hdl.handle.net/1887/17653

 

Universality of citation distributions revisited
Ludo Waltman, Nees Jan van Eck, and Anthony F.J. van Raan
CWTS-WP-2011-004
http://hdl.handle.net/1887/17651

 

Globalisation of science in kilometers
Ludo Waltman, Robert J.W. Tijssen, and Nees Jan van Eck
CWTS-WP-2011-003
http://hdl.handle.net/1887/16650

 

An evolutionary model of price competition among spatially distributed firms
Ludo Waltman, Nees Jan van Eck, Rommert Dekker, and Uzay Kaymak
CWTS-WP-2011-002
http://hdl.handle.net/1887/16628

 

Do age and professional rank influence the order of authorship in scientific publications? Some evidence from a micro-level perspective
Rodrigo Costas and María Bordons
CWTS-WP-2011-001
http://hdl.handle.net/1887/16685

 

2010

Poverty research in a development policy context
Alesia Zuccala and Nees Jan van Eck
CWTS-WP-2010-011
http://hdl.handle.net/1887/16172

 

Bibliometric mapping of Computer and Information Ethics
Richard Heersmink, Jeroen van den Hoven, Nees Jan van Eck, and Jan van den Berg
CWTS-WP-2010-010
http://hdl.handle.net/1887/16097

 

Towards a new crown indicator: An empirical analysis
Ludo Waltman, Nees Jan van Eck, Thed N. van Leeuwen, Martijn S. Visser, and
Anthony F.J. van Raan
CWTS-WP-2010-009
http://hdl.handle.net/1887/16091

 

A unified approach to mapping and clustering of bibliometric networks
Ludo Waltman, Nees Jan van Eck, and Ed C.M. Noyons
CWTS-WP-2010-008
http://hdl.handle.net/1887/15685

 

A bibliometric classificatory approach for the study and assessment of research performance at the individual level: the effects of age on productivity and impact
Rodrigo Costas, Thed N. van Leeuwen, and María Bordons
CWTS-WP-2010-007
http://hdl.handle.net/1887/15098

 

Towards a new crown indicator: Some theoretical considerations
Ludo Waltman, Nees Jan van Eck, Thed N. van Leeuwen, Martijn S. Visser, and
Anthony F.J. van Raan
CWTS-WP-2010-006
http://hdl.handle.net/1887/15079

 

Rivals for the crown: Reply to Opthof and Leydesdorff
Anthony F.J. van Raan, Thed N. van Leeuwen, Martijn S. Visser, Nees Jan van Eck, and Ludo Waltman
CWTS-WP-2010-005
http://hdl.handle.net/1887/15078

 

The relation between Eigenfactor, audience factor, and influence weight
Ludo Waltman and Nees Jan van Eck
CWTS-WP-2010-004
http://hdl.handle.net/1887/15081

 

A comparison of two techniques for bibliometric mapping: Multidimensional scaling and VOS
Nees Jan van Eck, Ludo Waltman, Rommert Dekker, and Jan van den Berg
CWTS-WP-2010-003
http://hdl.handle.net/1887/15069

 

Discarding the ‘basic science/applied science’ dichotomy: A Knowledge Utilization Triangle classification system of research journals
Robert J.W. Tijssen
CWTS-WP-2010-002
http://hdl.handle.net/1887/15046

 

On the map: Nature and Science editorials
Cathelijn J.F. Waaijer, Cornelis A. van Bochove and Nees Jan van Eck
CWTS-WP-2010-001
http://hdl.handle.net/1887/14759

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