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Loet Leydesdorff
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- affiliation: University of Amsterdam
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Journal Articles
- 2023
- [j261]Cinzia Daraio, Simone Di Leo, Loet Leydesdorff:
A heuristic approach based on Leiden rankings to identify outliers: evidence from Italian universities in the European landscape. Scientometrics 128(1): 483-510 (2023) - [j260]Giovanni Abramo, Isidro F. Aguillo, Dag W. Aksnes, Kevin W. Boyack, Quentin L. Burrell, Juan Miguel Campanario, Zaida Chinchilla-Rodríguez, Rodrigo Costas, Ciriaco Andrea D'Angelo, Anne-Wil Harzing, Hamid R. Jamali, Vincent Larivière, Loet Leydesdorff, Marc Luwel, Ben Martin, Philipp Mayr, Katherine W. McCain, Isabella Peters, Ismael Ràfols, Nicolás Robinson-García, Torben Schubert, Henry Small, Cassidy R. Sugimoto, Mike Thelwall, Peter van den Besselaar, Thed N. van Leeuwen, Ludo Waltman:
Retraction of Predatory publishing in Scopus: evidence on cross-country differences lacks justification. Scientometrics 128(2): 1459-1461 (2023) - 2022
- [j259]Caroline S. Wagner, Lin Zhang, Loet Leydesdorff:
A discussion of measuring the top-1% most-highly cited publications: quality and impact of Chinese papers. Scientometrics 127(4): 1825-1839 (2022) - 2021
- [j258]Loet Leydesdorff, Inga A. Ivanova:
The measurement of "interdisciplinarity" and "synergy" in scientific and extra-scientific collaborations. J. Assoc. Inf. Sci. Technol. 72(4): 387-402 (2021) - [j257]Loet Leydesdorff, Caroline S. Wagner, Lin Zhang:
Are University Rankings Statistically Significant? A Comparison among Chinese Universities and with the USA. J. Data Inf. Sci. 6(2): 67-95 (2021) - [j256]Lin Zhang, Loet Leydesdorff:
The Scientometric Measurement of Interdisciplinarity and Diversity in the Research Portfolios of Chinese Universities. J. Data Inf. Sci. 6(4): 13-35 (2021) - [j255]Andreas Thor, Lutz Bornmann, Robin Haunschild, Loet Leydesdorff:
Which are the influential publications in the Web of Science subject categories over a long period of time? CRExplorer software used for big-data analyses in bibliometrics . J. Inf. Sci. 47(3) (2021) - [j254]Loet Leydesdorff, Lutz Bornmann:
Disruption indices and their calculation using web-of-science data: Indicators of historical developments or evolutionary dynamics? J. Informetrics 15(4): 101219 (2021) - [j253]Loet Leydesdorff, Lutz Bornmann, Caroline S. Wagner:
Improved clusterings and visualizations of 11, 359 journals in the JCRs 2015. Scientometrics 126(6): 5353-5354 (2021) - 2020
- [j252]Loet Leydesdorff, Franz Hoegl:
The evolutionary dynamics of expectations: Interactions among codes in inter-human communications. Biosyst. 198: 104236 (2020) - [j251]Iina Hellsten, Loet Leydesdorff:
Automated analysis of actor-topic networks on twitter: New approaches to the analysis of socio-semantic networks. J. Assoc. Inf. Sci. Technol. 71(1): 3-15 (2020) - [j250]Robin Haunschild, Loet Leydesdorff, Lutz Bornmann:
Library and Information Science Papers Discussed on Twitter: A new Network-based Approach for Measuring Public Attention. J. Data Inf. Sci. 5(3): 5-17 (2020) - [j249]Gangan Prathap, Somenath Mukherjee, Loet Leydesdorff:
Within-journal self-citations and the Pinski-Narin influence weights. J. Informetrics 14(1): 100989 (2020) - [j248]Robin Haunschild, Loet Leydesdorff, Lutz Bornmann, Iina Hellsten, Werner Marx:
Corrigendum to "Does the public discuss other topics on climate change than researchers? A comparison of explorative networks based on author keywords and hashtags" [J. Informetrics 13 (2019) 695-707]. J. Informetrics 14(1): 101020 (2020) - [j247]Lutz Bornmann, Christian Ganser, Alexander Tekles, Loet Leydesdorff:
Does the hα-index reinforce the Matthew effect in science? The introduction of agent-based simulations into scientometrics. Quant. Sci. Stud. 1(1): 331-346 (2020) - [j246]Loet Leydesdorff, Ismael Ràfols, Stasa Milojevic:
Bridging the divide between qualitative and quantitative science studies. Quant. Sci. Stud. 1(3): 918-926 (2020) - [j245]Lutz Bornmann, Loet Leydesdorff:
Historical roots of Judit Bar-Ilan's research: a cited-references analysis using CRExplorer. Scientometrics 123(3): 1193-1200 (2020) - [j244]Loet Leydesdorff, Lutz Bornmann:
"Interdisciplinarity" and "Synergy" in the Œuvre of Judit Bar-Ilan. Scientometrics 123(3): 1247-1260 (2020) - [j243]Xiaozan Lyu, Ping Zhou, Loet Leydesdorff:
Eco-system mapping of techno-science linkages at the level of scholarly journals and fields. Scientometrics 124(3): 2037-2055 (2020) - 2019
- [j242]Inga A. Ivanova, Øivind Strand, Loet Leydesdorff:
An Eco-Systems Approach to Constructing Economic Complexity Measures: Endogenization of the technological Dimension using Lotka-Volterra equations. Adv. Complex Syst. 22(1): 1850023:1-1850023:21 (2019) - [j241]Loet Leydesdorff, Lutz Bornmann, Caroline S. Wagner:
The Relative Influences of Government Funding and International Collaboration on Citation Impact. J. Assoc. Inf. Sci. Technol. 70(2): 198-201 (2019) - [j240]Loet Leydesdorff, Lutz Bornmann, John Mingers:
Statistical significance and effect sizes of differences among research universities at the level of nations and worldwide based on the leiden rankings. J. Assoc. Inf. Sci. Technol. 70(5): 509-525 (2019) - [j239]Loet Leydesdorff, Caroline S. Wagner, Igone Porto Gómez, Jordan A. Comins, Fred Y. Phillips:
Synergy in the knowledge base of U.S. innovation systems at national, state, and regional levels: The contributions of high-tech manufacturing and knowledge-intensive services. J. Assoc. Inf. Sci. Technol. 70(10): 1108-1123 (2019) - [j238]Loet Leydesdorff, Caroline S. Wagner, Lutz Bornmann:
Interdisciplinarity as diversity in citation patterns among journals: Rao-Stirling diversity, relative variety, and the Gini coefficient. J. Informetrics 13(1): 255-269 (2019) - [j237]Robin Haunschild, Loet Leydesdorff, Lutz Bornmann, Iina Hellsten, Werner Marx:
Does the public discuss other topics on climate change than researchers? A comparison of explorative networks based on author keywords and hashtags. J. Informetrics 13(2): 695-707 (2019) - [j236]Loet Leydesdorff, Caroline S. Wagner, Lutz Bornmann:
Diversity measurement: Steps towards the measurement of interdisciplinarity? J. Informetrics 13(3): 904-905 (2019) - [j235]Loet Leydesdorff, Lutz Bornmann, Tobias Opthof:
hα: the scientist as chimpanzee or bonobo. Scientometrics 118(3): 1163-1166 (2019) - [j234]Lutz Bornmann, Alexander Tekles, Loet Leydesdorff:
How well does I3 perform for impact measurement compared to other bibliometric indicators? The convergent validity of several (field-normalized) indicators. Scientometrics 119(2): 1187-1205 (2019) - [j233]Loet Leydesdorff, Lutz Bornmann, Jonathan Adams:
The integrated impact indicator revisited (I3*): a non-parametric alternative to the journal impact factor. Scientometrics 119(3): 1669-1694 (2019) - 2018
- [j232]Loet Leydesdorff, Mark William Johnson, Inga A. Ivanova:
Toward a calculus of redundancy: Signification, codification, and anticipation in cultural evolution. J. Assoc. Inf. Sci. Technol. 69(10): 1181-1192 (2018) - [j231]Lutz Bornmann, Jonathan Adams, Loet Leydesdorff:
The negative effects of citing with a national orientation in terms of recognition: National and international citations in natural-sciences papers from Germany, the Netherlands, and the UK. J. Informetrics 12(3): 931-949 (2018) - [j230]Jordan A. Comins, Stephanie A. Carmack, Loet Leydesdorff:
Patent citation spectroscopy (PCS): Online retrieval of landmark patents based on an algorithmic approach. J. Informetrics 12(4): 1223-1231 (2018) - [j229]Jordan A. Comins, Loet Leydesdorff:
Data-Mining the Foundational Patents of Photovoltaic Materials: An Application of Patent Citation Spectroscopy. J. Sci. Res. 7(2): 79-83 (2018) - [j228]Lutz Bornmann, Robin Haunschild, Loet Leydesdorff:
Reference publication year spectroscopy (RPYS) of Eugene Garfield's publications. Scientometrics 114(2): 439-448 (2018) - [j227]Loet Leydesdorff, Caroline S. Wagner, Lutz Bornmann:
Betweenness and diversity in journal citation networks as measures of interdisciplinarity - A tribute to Eugene Garfield. Scientometrics 114(2): 567-592 (2018) - [j226]Lutz Bornmann, Loet Leydesdorff:
Count highly-cited papers instead of papers with h citations: use normalized citation counts and compare "like with like"! Scientometrics 115(2): 1119-1123 (2018) - [j225]Loet Leydesdorff, Caroline S. Wagner, Lutz Bornmann:
Discontinuities in citation relations among journals: self-organized criticality as a model of scientific revolutions and change. Scientometrics 116(1): 623-644 (2018) - [j224]Loet Leydesdorff:
Diversity and interdisciplinarity: how can one distinguish and recombine disparity, variety, and balance? Scientometrics 116(3): 2113-2121 (2018) - 2017
- [j223]Loet Leydesdorff, Wouter de Nooy:
Can "hot spots" in the sciences be mapped using the dynamics of aggregated journal-journal citation Relations? J. Assoc. Inf. Sci. Technol. 68(1): 197-213 (2017) - [j222]Daniele Rotolo, Ismael Ràfols, Michael M. Hopkins, Loet Leydesdorff:
Strategic intelligence on emerging technologies: Scientometric overlay mapping. J. Assoc. Inf. Sci. Technol. 68(1): 214-233 (2017) - [j221]Loet Leydesdorff, Adina Nerghes:
Co-word maps and topic modeling: A comparison using small and medium-sized corpora (N < 1, 000). J. Assoc. Inf. Sci. Technol. 68(4): 1024-1035 (2017) - [j220]Jordan A. Comins, Loet Leydesdorff:
Identification of long-term concept-symbols among citations: Do common intellectual histories structure citation behavior? J. Assoc. Inf. Sci. Technol. 68(5): 1224-1233 (2017) - [j219]Loet Leydesdorff, Wouter de Nooy, Lutz Bornmann:
The Power-weakness Ratios (PWR) as a Journal Indicator: Testing the "Tournaments" Metaphor in Citation Impact Studies. J. Data Inf. Sci. 1(3): 6-26 (2017) - [j218]Stephen Carley, Alan L. Porter, Ismael Ràfols, Loet Leydesdorff:
Visualization of Disciplinary Profiles: Enhanced Science Overlay Maps. J. Data Inf. Sci. 2(3): 68-111 (2017) - [j217]Loet Leydesdorff, Han Woo Park:
Full and fractional counting in bibliometric networks. J. Informetrics 11(1): 117-120 (2017) - [j216]Lutz Bornmann, Loet Leydesdorff:
Skewness of citation impact data and covariates of citation distributions: A large-scale empirical analysis based on Web of Science data. J. Informetrics 11(1): 164-175 (2017) - [j215]Loet Leydesdorff:
In Praise of Bibliometrics. J. Informetrics 11(2): 595-597 (2017) - [j214]Xiaojun Hu, Loet Leydesdorff, Ronald Rousseau:
Heterogeneity in an undirected network: Definition and measurement. J. Informetrics 11(2): 669-682 (2017) - [j213]Loet Leydesdorff:
The positive side of discursive disagreements in the social sciences. J. Informetrics 11(4): 1043 (2017) - [j212]Jordan A. Comins, Loet Leydesdorff:
Citation algorithms for identifying research milestones driving biomedical innovation. Scientometrics 110(3): 1495-1504 (2017) - [j211]Loet Leydesdorff, Lutz Bornmann, Caroline S. Wagner:
Generating clustered journal maps: an automated system for hierarchical classification. Scientometrics 110(3): 1601-1614 (2017) - [j210]Caroline S. Wagner, Travis A. Whetsell, Loet Leydesdorff:
Growth of international collaboration in science: revisiting six specialties. Scientometrics 110(3): 1633-1652 (2017) - [j209]Loet Leydesdorff, Dieter Franz Kogler, Bowen Yan:
Mapping patent classifications: portfolio and statistical analysis, and the comparison of strengths and weaknesses. Scientometrics 112(3): 1573-1591 (2017) - 2016
- [j208]Loet Leydesdorff, Lutz Bornmann, Jordan A. Comins, Stasa Milojevic:
Citations: Indicators of Quality? The Impact Fallacy. Frontiers Res. Metrics Anal. 1: 1 (2016) - [j207]Ping Zhou, Loet Leydesdorff:
A Comparative Study of the Citation Impact of Chinese Journals with Government Priority Support. Frontiers Res. Metrics Anal. 1: 3 (2016) - [j206]Loet Leydesdorff, Lutz Bornmann:
The operationalization of "fields" as WoS subject categories (WCs) in evaluative bibliometrics: The cases of "library and information science" and "science & technology studies". J. Assoc. Inf. Sci. Technol. 67(3): 707-714 (2016) - [j205]Loet Leydesdorff, Gaston Heimeriks, Daniele Rotolo:
Journal portfolio analysis for countries, cities, and organizations: Maps and comparisons. J. Assoc. Inf. Sci. Technol. 67(3): 741-748 (2016) - [j204]Loet Leydesdorff, Caroline S. Wagner, Lutz Bornmann:
Replicability and the public/private divide. J. Assoc. Inf. Sci. Technol. 67(7): 1777-1778 (2016) - [j203]Iina Hellsten, Loet Leydesdorff:
The construction of interdisciplinarity: The development of the knowledge base and programmatic focus of the journal Climatic Change, 1977-2013. J. Assoc. Inf. Sci. Technol. 67(9): 2181-2193 (2016) - [j202]Loet Leydesdorff, Félix de Moya-Anegón, Wouter de Nooy:
Aggregated journal-journal citation relations in scopus and web of science matched and compared in terms of networks, maps, and interactive overlays. J. Assoc. Inf. Sci. Technol. 67(9): 2194-2211 (2016) - [j201]Qiuju Zhou, Loet Leydesdorff:
The normalization of occurrence and Co-occurrence matrices in bibliometrics using Cosine similarities and Ochiai coefficients. J. Assoc. Inf. Sci. Technol. 67(11): 2805-2814 (2016) - [j200]Johann Bauer, Loet Leydesdorff, Lutz Bornmann:
Highly cited papers in Library and Information Science (LIS): Authors, institutions, and network structures. J. Assoc. Inf. Sci. Technol. 67(12): 3095-3100 (2016) - [j199]Andreas Thor, Werner Marx, Loet Leydesdorff, Lutz Bornmann:
Introducing CitedReferencesExplorer (CRExplorer): A program for reference publication year spectroscopy with cited references standardization. J. Informetrics 10(2): 503-515 (2016) - [j198]Loet Leydesdorff, Lutz Bornmann, Ping Zhou:
Construction of a pragmatic base line for journal classifications and maps based on aggregated journal-journal citation relations. J. Informetrics 10(4): 902-918 (2016) - [j197]Jordan A. Comins, Loet Leydesdorff:
RPYS i/o: software demonstration of a web-based tool for the historiography and visualization of citation classics, sleeping beauties and research fronts. Scientometrics 107(3): 1509-1517 (2016) - [j196]Han Woo Park, Jungwon Yoon, Loet Leydesdorff:
The normalization of co-authorship networks in the bibliometric evaluation: the government stimulation programs of China and Korea. Scientometrics 109(2): 1017-1036 (2016) - [j195]A. I. M. Jakaria Rahman, Raf Guns, Loet Leydesdorff, Tim C. E. Engels:
Measuring the match between evaluators and evaluees: cognitive distances between panel members and research groups at the journal level. Scientometrics 109(3): 1639-1663 (2016) - [j194]Andreas Thor, Werner Marx, Loet Leydesdorff, Lutz Bornmann:
New features of CitedReferencesExplorer (CRExplorer). Scientometrics 109(3): 2049-2051 (2016) - [j193]Loet Leydesdorff, Jordan A. Comins, Aaron A. Sorensen, Lutz Bornmann, Iina Hellsten:
Cited references and Medical Subject Headings (MeSH) as two different knowledge representations: clustering and mappings at the paper level. Scientometrics 109(3): 2077-2091 (2016) - [j192]Loet Leydesdorff, Paul Wouters, Lutz Bornmann:
Professional and citizen bibliometrics: complementarities and ambivalences in the development and use of indicators - a state-of-the-art report. Scientometrics 109(3): 2129-2150 (2016) - 2015
- [j191]John Mingers, Loet Leydesdorff:
A review of theory and practice in scientometrics. Eur. J. Oper. Res. 246(1): 1-19 (2015) - [j190]Loet Leydesdorff, Félix de Moya-Anegón, Vicente P. Guerrero-Bote:
Journal maps, interactive overlays, and the measurement of interdisciplinarity on the basis of Scopus data (1996-2012). J. Assoc. Inf. Sci. Technol. 66(5): 1001-1016 (2015) - [j189]Loet Leydesdorff, Evgeniy Perevodchikov, Alexander Uvarov:
Measuring triple-helix synergy in the Russian innovation systems at regional, provincial, and national levels. J. Assoc. Inf. Sci. Technol. 66(6): 1229-1238 (2015) - [j188]Lutz Bornmann, Caroline S. Wagner, Loet Leydesdorff:
BRICS countries and scientific excellence: A bibliometric analysis of most frequently cited papers. J. Assoc. Inf. Sci. Technol. 66(7): 1507-1513 (2015) - [j187]Daniele Rotolo, Loet Leydesdorff:
Matching Medline/PubMed data with Web of Science: A routine in R language. J. Assoc. Inf. Sci. Technol. 66(10): 2155-2159 (2015) - [j186]Lutz Bornmann, Loet Leydesdorff:
Does quality and content matter for citedness? A comparison with para-textual factors and over time. J. Informetrics 9(3): 419-429 (2015) - [j185]Wouter de Nooy, Loet Leydesdorff:
The dynamics of triads in aggregated journal-journal citation relations: Specialty developments at the above-journal level. J. Informetrics 9(3): 542-554 (2015) - [j184]John Mingers, Loet Leydesdorff:
Identifying research fields within business and management: a journal cross-citation analysis. J. Oper. Res. Soc. 66(8): 1370-1384 (2015) - [j183]Robin Haunschild, Lutz Bornmann, Loet Leydesdorff:
Networks of reader and country status: an analysis of Mendeley reader statistics. PeerJ Comput. Sci. 1: e32 (2015) - [j182]Lutz Bornmann, Loet Leydesdorff:
Topical connections between the institutions within an organisation (institutional co-authorships, direct citation links and co-citations). Scientometrics 102(1): 455-463 (2015) - [j181]Loet Leydesdorff, Floortje Alkemade, Gaston Heimeriks, Rinke Hoekstra:
Patents as instruments for exploring innovation dynamics: geographic and technological perspectives on "photovoltaic cells". Scientometrics 102(1): 629-651 (2015) - [j180]Marcin Kozak, Lutz Bornmann, Loet Leydesdorff:
How have the Eastern European countries of the former Warsaw Pact developed since 1990? A bibliometric study. Scientometrics 102(2): 1101-1117 (2015) - [j179]Loet Leydesdorff:
Can technology life-cycles be indicated by diversity in patent classifications? The crucial role of variety. Scientometrics 105(3): 1441-1451 (2015) - [j178]Loet Leydesdorff:
Can intellectual processes in the sciences also be simulated? The anticipation and visualization of possible future states. Scientometrics 105(3): 2197-2214 (2015) - 2014
- [j177]Loet Leydesdorff, Robert L. Goldstone:
Interdisciplinarity at the journal and specialty level: The changing knowledge bases of the journal cognitive science. J. Assoc. Inf. Sci. Technol. 65(1): 164-177 (2014) - [j176]Chaomei Chen, Loet Leydesdorff:
Patterns of connections and movements in dual-map overlays: A new method of publication portfolio analysis. J. Assoc. Inf. Sci. Technol. 65(2): 334-351 (2014) - [j175]Loet Leydesdorff, Inga A. Ivanova:
Mutual redundancies in interhuman communication systems: Steps toward a calculus of processing meaning. J. Assoc. Inf. Sci. Technol. 65(2): 386-399 (2014) - [j174]Fred Y. Ye, Loet Leydesdorff:
The "academic trace" of the performance matrix: A mathematical synthesis of the h-index and the integrated impact indicator (I3). J. Assoc. Inf. Sci. Technol. 65(4): 742-750 (2014) - [j173]Werner Marx, Lutz Bornmann, Andreas Barth, Loet Leydesdorff:
Detecting the historical roots of research fields by reference publication year spectroscopy (RPYS). J. Assoc. Inf. Sci. Technol. 65(4): 751-764 (2014) - [j172]Susanne E. Baumgartner, Loet Leydesdorff:
Group-based trajectory modeling (GBTM) of citations in scholarly literature: Dynamic qualities of "transient" and "sticky knowledge claims". J. Assoc. Inf. Sci. Technol. 65(4): 797-811 (2014) - [j171]Loet Leydesdorff, Han Woo Park, Caroline S. Wagner:
International coauthorship relations in the Social Sciences Citation Index: Is internationalization leading the Network? J. Assoc. Inf. Sci. Technol. 65(10): 2111-2126 (2014) - [j170]Loet Leydesdorff, Petra Ahrweiler:
In search of a network theory of innovations: Relations, positions, and perspectives. J. Assoc. Inf. Sci. Technol. 65(11): 2359-2374 (2014) - [j169]Loet Leydesdorff, Lutz Bornmann, Werner Marx, Stasa Milojevic:
Referenced Publication Years Spectroscopy applied to iMetrics: Scientometrics, Journal of Informetrics, and a relevant subset of JASIST. J. Informetrics 8(1): 162-174 (2014) - [j168]Lutz Bornmann, Loet Leydesdorff, Jian Wang:
How to improve the prediction based on citation impact percentiles for years shortly after the publication date? J. Informetrics 8(1): 175-180 (2014) - [j167]Lutz Bornmann, Loet Leydesdorff:
On the meaningful and non-meaningful use of reference sets in bibliometrics. J. Informetrics 8(1): 273-275 (2014) - [j166]Loet Leydesdorff, Caroline S. Wagner, Lutz Bornmann:
The European Union, China, and the United States in the top-1% and top-10% layers of most-frequently cited publications: Competition and collaborations. J. Informetrics 8(3): 606-617 (2014) - [j165]Peter van den Besselaar, Lutz Bornmann, Loet Leydesdorff:
Correction. J. Informetrics 8(4): 801 (2014) - [j164]Loet Leydesdorff, Mark William Johnson, Inga A. Ivanova:
The communication of expectations and individual understanding: Redundancy as reduction of uncertainty, and the processing of meaning. Kybernetes 43(9/10): 1362-1371 (2014) - [j163]Jonathan Adams, Karen Gurney, Daniel W. Hook, Loet Leydesdorff:
International collaboration clusters in Africa. Scientometrics 98(1): 547-556 (2014) - [j162]Loet Leydesdorff, Duncan Kushnir, Ismael Ràfols:
Interactive overlay maps for US patent (USPTO) data based on International Patent Classification (IPC). Scientometrics 98(3): 1583-1599 (2014) - [j161]Loet Leydesdorff, Ping Zhou:
Measuring the knowledge-based economy of China in terms of synergy among technological, organizational, and geographic attributes of firms. Scientometrics 98(3): 1703-1719 (2014) - [j160]Loet Leydesdorff, Han Woo Park, Balázs Lengyel:
A routine for measuring synergy in university-industry-government relations: mutual information as a Triple-Helix and Quadruple-Helix indicator. Scientometrics 99(1): 27-35 (2014) - [j159]Inga A. Ivanova, Loet Leydesdorff:
A simulation model of the Triple Helix of university-industry-government relations and the decomposition of the redundancy. Scientometrics 99(3): 927-948 (2014) - 2013
- [j158]Loet Leydesdorff, Ping Zhou, Lutz Bornmann:
How can journal impact factors be normalized across fields of science? An assessment in terms of percentile ranks and fractional counts. J. Assoc. Inf. Sci. Technol. 64(1): 96-107 (2013) - [j157]Loet Leydesdorff, Tobias Opthof:
Citation analysis with medical subject Headings (MeSH) using the Web of Knowledge: A new routine. J. Assoc. Inf. Sci. Technol. 64(5): 1076-1080 (2013) - [j156]Lutz Bornmann, Loet Leydesdorff:
Statistical tests and research assessments: A comment on Schneider (2012). J. Assoc. Inf. Sci. Technol. 64(6): 1306-1308 (2013) - [j155]Loet Leydesdorff, Øivind Strand:
The Swedish system of innovation: Regional synergies in a knowledge-based economy. J. Assoc. Inf. Sci. Technol. 64(9): 1890-1902 (2013) - [j154]Loet Leydesdorff, Filippo Radicchi, Lutz Bornmann, Claudio Castellano, Wouter de Nooy:
Field-normalized impact factors (IFs): A comparison of rescaling and fractionally counted IFs. J. Assoc. Inf. Sci. Technol. 64(11): 2299-2309 (2013) - [j153]Fred Y. Ye, Susan S. Yu, Loet Leydesdorff:
The Triple Helix of university-industry-government relations at the country level and its dynamic evolution under the pressures of globalization. J. Assoc. Inf. Sci. Technol. 64(11): 2317-2325 (2013) - [j152]Loet Leydesdorff, Ismael Ràfols, Chaomei Chen:
Interactive overlays of journals and the measurement of interdisciplinarity on the basis of aggregated journal-journal citations. J. Assoc. Inf. Sci. Technol. 64(12): 2573-2586 (2013) - [j151]Lutz Bornmann, Loet Leydesdorff, Rüdiger Mutz:
The use of percentiles and percentile rank classes in the analysis of bibliometric data: Opportunities and limits. J. Informetrics 7(1): 158-165 (2013) - [j150]Erjia Yan, Ying Ding, Blaise Cronin, Loet Leydesdorff:
A bird's-eye view of scientific trading: Dependency relations among fields of science. J. Informetrics 7(2): 249-264 (2013) - [j149]Lutz Bornmann, Loet Leydesdorff:
The validation of (advanced) bibliometric indicators through peer assessments: A comparative study using data from InCites and F1000. J. Informetrics 7(2): 286-291 (2013) - [j148]Loet Leydesdorff:
Does the specification of uncertainty hurt the progress of scientometrics? J. Informetrics 7(2): 292-293 (2013) - [j147]Han Woo Park, Loet Leydesdorff:
Decomposing social and semantic networks in emerging "big data" research. J. Informetrics 7(3): 756-765 (2013) - [j146]Loet Leydesdorff:
The revised SNIP indicator of Elsevier's Scopus. J. Informetrics 7(4): 859-860 (2013) - [j145]Lutz Bornmann, Loet Leydesdorff, Jian Wang:
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). J. Informetrics 7(4): 933-944 (2013) - [j144]Loet Leydesdorff:
An evaluation of impacts in "Nanoscience & nanotechnology": steps towards standards for citation analysis. Scientometrics 94(1): 35-55 (2013) - [j143]Loet Leydesdorff, Stephen Carley, Ismael Ràfols:
Global maps of science based on the new Web-of-Science categories. Scientometrics 94(2): 589-593 (2013) - [j142]Stasa Milojevic, Loet Leydesdorff:
Information metrics (iMetrics): a research specialty with a socio-cognitive identity? Scientometrics 95(1): 141-157 (2013) - [j141]Loet Leydesdorff:
Statistics for the dynamic analysis of scientometric data: the evolution of the sciences in terms of trajectories and regimes. Scientometrics 96(3): 731-741 (2013) - [j140]Loet Leydesdorff, Martin Meyer:
A reply to Etzkowitz' comments to Leydesdorff and Martin (2010): technology transfer and the end of the Bayh-Dole effect. Scientometrics 97(3): 927-934 (2013) - [j139]Loet Leydesdorff, Daniele Rotolo, Wouter de Nooy:
Innovation as a nonlinear process, the scientometric perspective, and the specification of an 'innovation opportunities explorer'. Technol. Anal. Strateg. Manag. 25(6): 641-653 (2013) - 2012
- [j138]Robert D. Shelton, Loet Leydesdorff:
Publish or patent: Bibliometric evidence for empirical trade-offs in national funding strategies. J. Assoc. Inf. Sci. Technol. 63(3): 498-511 (2012) - [j137]Loet Leydesdorff, Lutz Bornmann:
Mapping (USPTO) patent data using overlays to Google Maps. J. Assoc. Inf. Sci. Technol. 63(7): 1442-1458 (2012) - [j136]Loet Leydesdorff, Lutz Bornmann:
Percentile ranks and the integrated impact indicator (I3). J. Assoc. Inf. Sci. Technol. 63(9): 1901-1902 (2012) - [j135]Loet Leydesdorff, Daniele Rotolo, Ismael Ràfols:
Bibliometric perspectives on medical innovation using the medical subject Headings of PubMed. J. Assoc. Inf. Sci. Technol. 63(11): 2239-2253 (2012) - [j134]Loet Leydesdorff:
Accounting for the uncertainty in the evaluation of percentile ranks. J. Assoc. Inf. Sci. Technol. 63(11): 2349-2350 (2012) - [j133]Loet Leydesdorff, Ismael Ràfols:
Interactive overlays: A new method for generating global journal maps from Web-of-Science data. J. Informetrics 6(2): 318-332 (2012) - [j132]Lutz Bornmann, Félix de Moya-Anegón, Loet Leydesdorff:
The new Excellence Indicator in the World Report of the SCImago Institutions Rankings 2011. J. Informetrics 6(2): 333-335 (2012) - [j131]Lutz Bornmann, Loet Leydesdorff:
Which are the best performing regions in information science in terms of highly cited papers? Some improvements of our previous mapping approaches. J. Informetrics 6(2): 336-345 (2012) - [j130]Alireza Abbasi, Liaquat Hossain, Loet Leydesdorff:
Betweenness centrality as a driver of preferential attachment in the evolution of research collaboration networks. J. Informetrics 6(3): 403-412 (2012) - [j129]Loet Leydesdorff:
McCall's area transformation versus the integrated impact indicator (I3). J. Informetrics 6(4): 513-514 (2012) - [j128]Loet Leydesdorff, Ulrike Felt:
Edited Volumes, Monographs and Book Chapters in the Book Citation Index (BKCI) and Science Citation Index (SCI, Sosci, A&HCI). J. Sci. Res. 1(1): 28-34 (2012) - [j127]Gangan Prathap, Loet Leydesdorff:
The World of Science According to Performance Indicators Based on Percentile Ranking Normalization. J. Sci. Res. 1(1): 53-59 (2012) - [j126]Ki-Seok Kwon, Han Woo Park, Minho So, Loet Leydesdorff:
Has globalization strengthened South Korea's national research system? National and international dynamics of the Triple Helix of scientific co-authorship relationships in South Korea. Scientometrics 90(1): 163-176 (2012) - [j125]Loet Leydesdorff, Tobias Opthof:
A rejoinder on energy versus impact indicators. Scientometrics 90(2): 745-748 (2012) - [j124]Loet Leydesdorff:
Alternatives to the journal impact factor: I3 and the top-10% (or top-25%?) of the most-highly cited papers. Scientometrics 92(2): 355-365 (2012) - [j123]Loet Leydesdorff, Lutz Bornmann:
Testing differences statistically with the Leiden ranking. Scientometrics 92(3): 781-783 (2012) - [j122]Gaston Heimeriks, Loet Leydesdorff:
Emerging search regimes: measuring co-evolutions among research, science, and society. Technol. Anal. Strateg. Manag. 24(1): 51-67 (2012) - 2011
- [j121]Loet Leydesdorff, Tobias Opthof:
Scopus' SNIP indicator: Reply to Moed. J. Assoc. Inf. Sci. Technol. 62(1): 214-215 (2011) - [j120]Loet Leydesdorff, Lutz Bornmann:
How fractional counting of citations affects the impact factor: Normalization in terms of differences in citation potentials among fields of science. J. Assoc. Inf. Sci. Technol. 62(2): 217-229 (2011) - [j119]Loet Leydesdorff, Ismael Ràfols:
Local emergence and global diffusion of research technologies: An exploration of patterns of network formation. J. Assoc. Inf. Sci. Technol. 62(5): 846-860 (2011) - [j118]Loet Leydesdorff, Jung C. Shin:
How to evaluate universities in terms of their relative citation impacts: Fractional counting of citations and the normalization of differences among disciplines. J. Assoc. Inf. Sci. Technol. 62(6): 1146-1155 (2011) - [j117]Loet Leydesdorff, Lutz Bornmann, Rüdiger Mutz, Tobias Opthof:
Turning the tables on citation analysis one more time: Principles for comparing sets of documents. J. Assoc. Inf. Sci. Technol. 62(7): 1370-1381 (2011) - [j116]Lutz Bornmann, Loet Leydesdorff:
Which cities produce more excellent papers than can be expected? A new mapping approach, using Google Maps, based on statistical significance testing. J. Assoc. Inf. Sci. Technol. 62(10): 1954-1962 (2011) - [j115]Loet Leydesdorff, Lutz Bornmann:
Integrated impact indicators compared with impact factors: An alternative research design with policy implications. J. Assoc. Inf. Sci. Technol. 62(11): 2133-2146 (2011) - [j114]Loet Leydesdorff, Björn Hammarfelt, Almila Akdag Salah:
The structure of the Arts & Humanities Citation Index: A mapping on the basis of aggregated citations among 1, 157 journals. J. Assoc. Inf. Sci. Technol. 62(12): 2414-2426 (2011) - [j113]Loet Leydesdorff, Ismael Ràfols:
Indicators of the interdisciplinarity of journals: Diversity, centrality, and citations. J. Informetrics 5(1): 87-100 (2011) - [j112]Loet Leydesdorff, Tobias Opthof:
Remaining problems with the "New Crown Indicator" (MNCS) of the CWTS. J. Informetrics 5(1): 224-225 (2011) - [j111]Ping Zhou, Loet Leydesdorff:
Fractional counting of citations in research evaluation: A cross- and interdisciplinary assessment of the Tsinghua University in Beijing. J. Informetrics 5(3): 360-368 (2011) - [j110]Loet Leydesdorff, Kasper Welbers:
The semantic mapping of words and co-words in contexts. J. Informetrics 5(3): 469-475 (2011) - [j109]Lutz Bornmann, Loet Leydesdorff, Christiane Walch-Solimena, Christoph Ettl:
Mapping excellence in the geography of science: An approach based on Scopus data. J. Informetrics 5(4): 537-546 (2011) - [j108]Loet Leydesdorff:
"Structuration" by intellectual organization: the configuration of knowledge in relations among structural components in networks of science. Scientometrics 88(2): 499-520 (2011) - [j107]Loet Leydesdorff:
Katy Börner: Atlas of science: visualizing what we know - The MIT Press, Cambridge, MA/London, UK, 2010, US$20. Scientometrics 88(2): 675-677 (2011) - [j106]Tobias Opthof, Loet Leydesdorff:
A comment to the paper by Waltman et al., Scientometrics, 87, 467-481, 2011. Scientometrics 88(3): 1011-1016 (2011) - 2010
- [j105]Loet Leydesdorff:
The knowledge-based economy and the triple helix model. Annu. Rev. Inf. Sci. Technol. 44(1): 365-417 (2010) - [j104]Loet Leydesdorff:
Redundancy in Systems Which Entertain a Model of Themselves: Interaction Information and the Self-Organization of Anticipation. Entropy 12(1): 63-79 (2010) - [j103]Loet Leydesdorff, Félix de Moya-Anegón, Vicente P. Guerrero-Bote:
Journal maps on the basis of Scopus data: A comparison with the Journal Citation Reports of the ISI. J. Assoc. Inf. Sci. Technol. 61(2): 352-369 (2010) - [j102]Loet Leydesdorff, Alkim Almila Akdag Salah:
Maps on the basis of the Arts & Humanities Citation Index: The journals Leonardo and Art Journal versus "digital humanities" as a topic. J. Assoc. Inf. Sci. Technol. 61(4): 787-801 (2010) - [j101]Ping Zhou, Xinning Su, Loet Leydesdorff:
A comparative study on communication structures of Chinese journals in the social sciences. J. Assoc. Inf. Sci. Technol. 61(7): 1360-1376 (2010) - [j100]Loet Leydesdorff, Olle Persson:
Mapping the geography of science: Distribution patterns and networks of relations among cities and institutes. J. Assoc. Inf. Sci. Technol. 61(8): 1622-1634 (2010) - [j99]Ismael Ràfols, Alan L. Porter, Loet Leydesdorff:
Science overlay maps: A new tool for research policy and library management. J. Assoc. Inf. Sci. Technol. 61(9): 1871-1887 (2010) - [j98]Loet Leydesdorff:
The communication of meaning and the structuration of expectations: Giddens' "structuration theory" and Luhmann's "self-organization". J. Assoc. Inf. Sci. Technol. 61(10): 2138-2150 (2010) - [j97]Loet Leydesdorff, Tobias Opthof:
Scopus's source normalized impact per paper (SNIP) versus a journal impact factor based on fractional counting of citations. J. Assoc. Inf. Sci. Technol. 61(11): 2365-2369 (2010) - [j96]Lutz Bornmann, Loet Leydesdorff, Peter van den Besselaar:
A meta-evaluation of scientific research proposals: Different ways of comparing rejected to awarded applications. J. Informetrics 4(3): 211-220 (2010) - [j95]Tobias Opthof, Loet Leydesdorff:
Caveats for the journal and field normalizations in the CWTS ("Leiden") evaluations of research performance. J. Informetrics 4(3): 423-430 (2010) - [j94]Loet Leydesdorff, Tobias Opthof:
Normalization at the field level: Fractional counting of citations. J. Informetrics 4(4): 644-646 (2010) - [j93]Loet Leydesdorff, Martin Meyer:
The decline of university patenting and the end of the Bayh-Dole effect. Scientometrics 83(2): 355-362 (2010) - [j92]Loet Leydesdorff, Girma Zawdie:
The triple helix perspective of innovation systems. Technol. Anal. Strateg. Manag. 22(7): 789-804 (2010) - 2009
- [j91]Loet Leydesdorff:
Interaction information: linear and nonlinear interpretations. Int. J. Gen. Syst. 38(6): 681-685 (2009) - [j90]Loet Leydesdorff, Ismael Ràfols:
A global map of science based on the ISI subject categories. J. Assoc. Inf. Sci. Technol. 60(2): 348-362 (2009) - [j89]Loet Leydesdorff, Yuan Sun:
National and international dimensions of the Triple Helix in Japan: University-industry-government versus international coauthorship relations. J. Assoc. Inf. Sci. Technol. 60(4): 778-788 (2009) - [j88]Leo Egghe, Loet Leydesdorff:
The relation between Pearson's correlation coefficient r and Salton's cosine measure. J. Assoc. Inf. Sci. Technol. 60(5): 1027-1036 (2009) - [j87]Stephen J. Bensman, Loet Leydesdorff:
Definition and identification of journals as bibliographic and subject entities: Librarianship versus ISI Journal Citation Reports methods and their effect on citation measures. J. Assoc. Inf. Sci. Technol. 60(6): 1097-1117 (2009) - [j86]Loet Leydesdorff:
How are new citation-based journal indicators adding to the bibliometric toolbox? J. Assoc. Inf. Sci. Technol. 60(7): 1327-1336 (2009) - [j85]Loet Leydesdorff, Carole Probst:
The delineation of an interdisciplinary specialty in terms of a journal set: The case of communication studies. J. Assoc. Inf. Sci. Technol. 60(8): 1709-1718 (2009) - [j84]Ismael Ràfols, Loet Leydesdorff:
Content-based and algorithmic classifications of journals: Perspectives on the dynamics of scientific communication and indexer effects. J. Assoc. Inf. Sci. Technol. 60(9): 1823-1835 (2009) - [j83]Diana Lucio-Arias, Loet Leydesdorff:
An indicator of research front activity: Measuring intellectual organization as uncertainty reduction in document sets. J. Assoc. Inf. Sci. Technol. 60(12): 2488-2498 (2009) - [j82]Diana Lucio-Arias, Loet Leydesdorff:
The dynamics of exchanges and references among scientific texts, and the autopoiesis of discursive knowledge. J. Informetrics 3(3): 261-271 (2009) - [j81]Loet Leydesdorff, Caroline S. Wagner:
Macro-level indicators of the relations between research funding and research output. J. Informetrics 3(4): 353-362 (2009) - [j80]Loet Leydesdorff, Caroline S. Wagner:
Is the United States losing ground in science? A global perspective on the world science system. Scientometrics 78(1): 23-36 (2009) - [j79]Han Woo Park, Loet Leydesdorff:
Knowledge linkage structures in communication studies using citation analysis among communication journals. Scientometrics 81(1): 157-175 (2009) - 2008
- [j78]Loet Leydesdorff:
Configurational Information as Potentially Negative Entropy: The Triple Helix Model. Entropy 10(4): 391-410 (2008) - [j77]Loet Leydesdorff:
On the normalization and visualization of author co-citation data: Salton's Cosine versus the Jaccard index. J. Assoc. Inf. Sci. Technol. 59(1): 77-85 (2008) - [j76]Loet Leydesdorff:
Caveats for the use of citation indicators in research and journal evaluations. J. Assoc. Inf. Sci. Technol. 59(2): 278-287 (2008) - [j75]Loet Leydesdorff, Ping Zhou:
Co-word analysis using the Chinese character set. J. Assoc. Inf. Sci. Technol. 59(9): 1528-1530 (2008) - [j74]Loet Leydesdorff:
Patent classifications as indicators of intellectual organization. J. Assoc. Inf. Sci. Technol. 59(10): 1582-1597 (2008) - [j73]Loet Leydesdorff, Thomas Schank:
Dynamic animations of journal maps: Indicators of structural changes and interdisciplinary developments. J. Assoc. Inf. Sci. Technol. 59(11): 1810-1818 (2008) - [j72]Diana Lucio-Arias, Loet Leydesdorff:
Main-path analysis and path-dependent transitions in HistCiteTM-based historiograms. J. Assoc. Inf. Sci. Technol. 59(12): 1948-1962 (2008) - [j71]Loet Leydesdorff, Caroline S. Wagner:
International collaboration in science and the formation of a core group. J. Informetrics 2(4): 317-325 (2008) - [j70]Han Woo Park, Loet Leydesdorff:
Korean journals in the Science Citation Index: What do they reveal about the intellectual structure of S&T in Korea? Scientometrics 75(3): 439-462 (2008) - [j69]Loet Leydesdorff:
The delineation of nanoscience and nanotechnology in terms of journals and patents: A most recent update. Scientometrics 76(1): 159-167 (2008) - 2007
- [j68]Loet Leydesdorff:
Visualization of the citation impact environments of scientific journals: An online mapping exercise. J. Assoc. Inf. Sci. Technol. 58(1): 25-38 (2007) - [j67]Ping Zhou, Loet Leydesdorff:
A comparison between the China Scientific and Technical Papers and Citations Database and the Science Citation Index in terms of journal hierarchies and interjournal citation relations. J. Assoc. Inf. Sci. Technol. 58(2): 223-236 (2007) - [j66]Loet Leydesdorff:
Betweenness centrality as an indicator of the interdisciplinarity of scientific journals. J. Assoc. Inf. Sci. Technol. 58(9): 1303-1319 (2007) - [j65]Loet Leydesdorff:
Should co-occurrence data be normalized? A rejoinder. J. Assoc. Inf. Sci. Technol. 58(14): 2411-2413 (2007) - [j64]Ronald N. Kostoff, J. Antonio del Río, Héctor D. Cortés, Charles Smith, Andrew Smith, Caroline S. Wagner, Loet Leydesdorff, George Karypis, Guido Malpohl, Rene Tshiteya:
Clustering methodologies for identifying country core competencies. J. Inf. Sci. 33(1): 21-40 (2007) - [j63]Loet Leydesdorff, Martin Meyer:
The scientometrics of a Triple Helix of university-industry-government relations (Introduction to the topical issue). Scientometrics 70(2): 207-222 (2007) - [j62]Diana Lucio-Arias, Loet Leydesdorff:
Knowledge emergence in scientific communication: from "fullerenes" to "nanotubes". Scientometrics 70(3): 603-632 (2007) - [j61]Loet Leydesdorff, Ping Zhou:
Nanotechnology as a field of science: Its delineation in terms of journals and patents. Scientometrics 70(3): 693-713 (2007) - [j60]Loet Leydesdorff:
Mapping interdisciplinarity at the interfaces between the Science Citation Index and the Social Science Citation Index. Scientometrics 71(3): 391-405 (2007) - [j59]Ping Zhou, Loet Leydesdorff:
The citation impacts and citation environments of Chinese journals in mathematics. Scientometrics 72(2): 185-200 (2007) - 2006
- [j58]Robert L. Goldstone, Loet Leydesdorff:
The Import and Export of Cognitive Science. Cogn. Sci. 30(6): 983-993 (2006) - [j57]Loet Leydesdorff:
Can scientific journals be classified in terms of aggregated journal-journal citation relations using the Journal Citation Reports? J. Assoc. Inf. Sci. Technol. 57(5): 601-613 (2006) - [j56]Loet Leydesdorff, Stephen J. Bensman:
Classification and powerlaws: The logarithmic transformation. J. Assoc. Inf. Sci. Technol. 57(11): 1470-1486 (2006) - [j55]Loet Leydesdorff, Liwen Qiu Vaughan:
Co-occurrence matrices and their applications in information science: Extending ACA to the Web environment. J. Assoc. Inf. Sci. Technol. 57(12): 1616-1628 (2006) - [j54]Loet Leydesdorff:
The biological metaphor of a second-order observer and the sociological discourse. Kybernetes 35(3/4): 531-546 (2006) - [j53]Michaël Deinema, Loet Leydesdorff:
The two faces of American power: Military and political communication during the Cuban missile crisis. Kybernetes 35(3/4): 547-566 (2006) - [j52]Iina Hellsten, Loet Leydesdorff, Paul Wouters:
Multiple presents: how search engines rewrite the past. New Media Soc. 8(6): 901-924 (2006) - [j51]Loet Leydesdorff, Iina Hellsten:
Measuring the meaning of words in contexts: An automated analysis of controversies about 'Monarch butterflies, ' 'Frankenfoods, ' and 'stem cells'. Scientometrics 67(2): 231-258 (2006) - 2005
- [j50]Loet Leydesdorff:
Similarity measures, author cocitation analysis, and information theory. J. Assoc. Inf. Sci. Technol. 56(7): 769-772 (2005) - [j49]Loet Leydesdorff, Jin Bihui:
Mapping the Chinese Science Citation Database in terms of aggregated journal-journal citation relations. J. Assoc. Inf. Sci. Technol. 56(14): 1469-1479 (2005) - [j48]Loet Leydesdorff:
Anticipatory Systems and the Processing of Meaning: a Simulation Study Inspired by Luhmann's Theory of Social Systems. J. Artif. Soc. Soc. Simul. 8(2) (2005) - [j47]Loet Leydesdorff, Virginia Trimnle, Peter Vinkler:
Walk-round. Scientometrics 63(2): 407-419 (2005) - [j46]Loet Leydesdorff, Ping Zhou:
Are the contributions of China and Korea upsetting the world system of science? Scientometrics 63(3): 617-630 (2005) - [j45]Han Woo Park, Heung Deug Hong, Loet Leydesdorff:
A comparison of the knowledge-based innovation systems in the economies of South Korea and the Netherlands using Triple Helix indicators. Scientometrics 65(1): 3-27 (2005) - 2004
- [j44]Paul Wouters, Iina Hellsten, Loet Leydesdorff:
Internet time and the reliability of search engines. First Monday 9(10) (2004) - [j43]Loet Leydesdorff:
The university-industry knowledge relationship: Analyzing patents and the science base of technologies. J. Assoc. Inf. Sci. Technol. 55(11): 991-1001 (2004) - [j42]Loet Leydesdorff:
Clusters and maps of science journals based on bi-connected graphs in Journal Citation Reports. J. Documentation 60(4): 371-427 (2004) - [j41]Loet Leydesdorff:
Top-down decomposition of the Journal Citation Reportof the Social Science Citation Index: Graph- and factor-analytical approaches. Scientometrics 60(2): 159-180 (2004) - 2003
- [j40]Loet Leydesdorff:
Empirical evidence of self-organization? A rejoinder. J. Assoc. Inf. Sci. Technol. 54(8): 804 (2003) - [j39]Loet Leydesdorff:
Rejoinder to Van den Besselaar's letter entitled Descriptive statistics, inferential statistics, rhetorical statistics. J. Assoc. Inf. Sci. Technol. 54(11): 1077-1078 (2003) - [j38]Loet Leydesdorff:
Can networks of journal-journal citations be used as indicators of change in the social sciences? J. Documentation 59(1): 84-104 (2003) - [j37]Caroline S. Wagner, Loet Leydesdorff:
Seismology as a dynamic, distributed area of scientific research. Scientometrics 58(1): 91-114 (2003) - [j36]Loet Leydesdorff, Martin Meyer:
The Triple Helix of university-industry-government relations. Scientometrics 58(2): 191-203 (2003) - [j35]Loet Leydesdorff:
The mutual information of university-industry-government relations: An indicator of the Triple Helix dynamics. Scientometrics 58(2): 445-467 (2003) - 2002
- [j34]Loet Leydesdorff:
Dynamic and evolutionary updates of classificatory schemes in scientific journal structures. J. Assoc. Inf. Sci. Technol. 53(12): 987-994 (2002) - [j33]Loet Leydesdorff:
Indicators of structural change in the dynamics of science: Entropy statistics of the SCI Journal Citation Reports. Scientometrics 53(1): 131-159 (2002) - 2001
- [j32]Loet Leydesdorff, Gaston Heimeriks:
The self-organization of the European Information Society: The case of biotechnology. J. Assoc. Inf. Sci. Technol. 52(13): 1262-1274 (2001) - [j31]Loet Leydesdorff:
Technology and Culture: the Dissemination and the Potential 'Lock-in' of New Technologies. J. Artif. Soc. Soc. Simul. 4(3) (2001) - [j30]Marta Riba Vilanova, Loet Leydesdorff:
Why Catalonia cannot be considered as a regional innovation system. Scientometrics 50(2): 215-240 (2001) - 2000
- [j29]Loet Leydesdorff:
Is the European Union Becoming a Single Publication System? Scientometrics 47(2): 265-280 (2000) - [j28]Andrés Zelman, Loet Leydesdorff:
Threaded Email Messages in Self-Organization and Science & Technology Studies Oriented Mailing Lists. Scientometrics 48(3): 361-380 (2000) - 1999
- [j27]Loet Leydesdorff, Paul Wouters:
Between texts and contexts: Advances in theories of citation? (A rejoinder). Scientometrics 44(2): 169-182 (1999) - 1998
- [j26]Loet Leydesdorff:
Theories of citation? Scientometrics 43(1): 5-25 (1998) - 1997
- [j25]Loet Leydesdorff:
Why Words and Co-Words Cannot Map the Development of the Sciences. J. Am. Soc. Inf. Sci. 48(5): 418-427 (1997) - [j24]Paul Wouters, Loet Leydesdorff:
Introduction. Scientometrics 38(1): 3-5 (1997) - [j23]Loet Leydesdorff, Peter van den Besselaar:
Scientometrics and communication theory: Towards theoretically informed indicators. Scientometrics 38(1): 155-174 (1997) - 1996
- [j22]Peter van den Besselaar, Loet Leydesdorff:
Mapping Change in Scientific Specialties: A Scientometric Reconstruction of the Development of Artificial Intelligence. J. Am. Soc. Inf. Sci. 47(6): 415-436 (1996) - 1994
- [j21]Loet Leydesdorff, Paul Wouters:
Crisis or critique? Scientometrics 30(2-3): 433-437 (1994) - [j20]Loet Leydesdorff:
Book review. Scientometrics 30(2-3): 539-541 (1994) - [j19]Loet Leydesdorff:
The generation of aggregated journal-journal citation maps on the basis of the CD-ROM version of the Science Citation Index. Scientometrics 31(1): 59-84 (1994) - [j18]Paul Wouters, Loet Leydesdorff:
Has Price's dream come true: Is scientometrics a hard science? Scientometrics 31(2): 193-222 (1994) - 1993
- [j17]Peter van den Besselaar, Loet Leydesdorff:
Research Performance in Artificial Intelligence and Robotics: An International Comparison. AI Commun. 6(2): 83-91 (1993) - [j16]Loet Leydesdorff, Susan E. Cozzens:
The delineation of specialties in terms of journals using the dynamic journal set of the SCI. Scientometrics 26(1): 135-156 (1993) - 1992
- [j15]Loet Leydesdorff:
Irreversibilites in science and technology networks: An empirical and analytical approach. Scientometrics 24(2): 321-357 (1992) - [j14]Loet Leydesdorff:
A validation study of "LEXIMAPPE". Scientometrics 25(2): 295-312 (1992) - [j13]Loet Leydesdorff:
A reply to Courtial's comments. Scientometrics 25(2): 317-319 (1992) - 1991
- [j12]Loet Leydesdorff:
On the "scientometric decline" of British science. One additional graph in reply to Ben Martin. Scientometrics 20(2): 363-367 (1991) - 1990
- [j11]Loet Leydesdorff:
Relations among science indicators or more generally among anything one might wish to count about texts - I. The static model. Scientometrics 18(3-4): 281-307 (1990) - [j10]Loet Leydesdorff:
Relations among science indicators or more generally among anything one might wish to count about texts - II. The dynamics of science. Scientometrics 19(3-4): 271-296 (1990) - [j9]Loet Leydesdorff:
The prediction of science indicators using information theory. Scientometrics 19(3-4): 297-324 (1990) - 1989
- [j8]Loet Leydesdorff:
The relations between qualitative theory and scientometric methods in science and technology studies - Introduction to the topical issue. Scientometrics 15(5-6): 333-347 (1989) - [j7]Olga Amsterdamska, Loet Leydesdorff:
Citations: Indicators of significance? Scientometrics 15(5-6): 449-471 (1989) - [j6]Eda Kranakis, Loet Leydesdorff:
Teletraffic conferences: Studying a field of engineering science. Scientometrics 15(5-6): 563-591 (1989) - [j5]Loet Leydesdorff:
The science citation index and the measurement of national performance in terms of numbers of scientific publications. Scientometrics 17(1-2): 111-120 (1989) - 1987
- [j4]Loet Leydesdorff:
Various methods for the mapping of science. Scientometrics 11(5-6): 295-324 (1987) - [j3]Loet Leydesdorff:
Towards a theory of citation? Scientometrics 12(5-6): 305-309 (1987) - 1986
- [j2]Loet Leydesdorff:
The development of frames of references. Scientometrics 9(3-4): 103-125 (1986) - 1981
- [j1]Loet Leydesdorff, H. van Erkelens:
Some social-psychological aspects of becoming a physicist. Scientometrics 3(1): 27-45 (1981)
Conference and Workshop Papers
- 2019
- [c13]Loet Leydesdorff, Lutz Bornmann, Jonathan Adams:
The Integrated Impact Indicator (I3) and the Journal Impact Factor: A Non‑Parametric Alternative. ISSI 2019: 23-34 - [c12]Lutz Bornmann, Alexander Tekles, Loet Leydesdorff:
The convergent validity of several (field-normalized) bibliometric indicators: How well does I3 perform for impact measurement? ISSI 2019: 112-124 - [c11]Xiaozan Lyu, Ping Zhou, Loet Leydesdorff:
Can the Emergence of New Developments in the Techno-Sciences be Indicated as 'Hot Spots' in Journal Maps? ISSI 2019: 253-258 - [c10]Andreas Thor, Lutz Bornmann, Robin Haunschild, Loet Leydesdorff:
Which are the influential publications in the Web of Science subject categories over a long period of time? CRExplorer software used for big-data analyses in bibliometrics. ISSI 2019: 501-510 - [c9]Inga A. Ivanova, Nataliya Smorodinskaya, Loet Leydesdorff:
Toward Better Growth Policies in a Modern Economy: The Comparison of Three Complexity Indices. ISSI 2019: 804-813 - [c8]Robin Haunschild, Loet Leydesdorff, Lutz Bornmann:
Library and Information Science papers discussed on Twitter: a new network-based approach for measuring public attention. ISSI 2019: 2481-2482 - 2015
- [c7]Loet Leydesdorff:
The dynamics of journal-journal citation relations: Can "hot spots" in the sciences be mapped? ASIST 2015: 1-4 - [c6]Diana Lucio-Arias, Gabriel Velez-Cuartas, Loet Leydesdorff:
SciELO Citation Index and Web of Science: Distinctions in the Visibility of Regional. ISSI 2015 - [c5]Ping Zhou, Loet Leydesdorff:
An International Comparison of the Citation Impact of Chinese Journals with Priority Funding. ISSI 2015 - 2012
- [c4]Loet Leydesdorff, Ulrike Felt:
"Books" and "book chapters" in the book citation index (BKCI) and science citation index (SCI, SoSCI, A&HCI). ASIST 2012: 1-7 - [c3]Stasa Milojevic, Bradley M. Hemminger, Jason Priem, Chaomei Chen, Loet Leydesdorff, Scott B. Weingart:
Information visualization state of the art and future directions. ASIST 2012: 1-3 - 2008
- [c2]Loet Leydesdorff:
Tracing "interdisciplinarity" using time series of journal maps: The visualization and dynamic animation of journal-journal citation relations. ASIST 2008: 1-8 - 2004
- [c1]Loet Leydesdorff, Jin Bihui:
Mapping the Chinese Science Citation Database. ASIST 2004: 488-495
Parts in Books or Collections
- 2019
- [p1]Loet Leydesdorff, Inga A. Ivanova, Martin Meyer:
Synergy in Innovation Systems Measured as Redundancy in Triple Helix Relations. Springer Handbook of Science and Technology Indicators 2019: 421-443
Informal and Other Publications
- 2022
- [i218]Caroline S. Wagner, Lin Zhang, Loet Leydesdorff:
A discussion of measuring the top-1 percent most-highly cited publications: Quality and impact of Chinese papers. CoRR abs/2202.00781 (2022) - 2020
- [i217]Loet Leydesdorff, Caroline S. Wagner, Lin Zhang:
Are University Rankings Statistically Significant? A Comparison among Chinese Universities and with the USA. CoRR abs/2011.08591 (2020) - 2019
- [i216]Lutz Bornmann, Alexander Tekles, Loet Leydesdorff:
The convergent validity of several (field-normalized) bibliometric indicators: How well does I3 perform for impact measurement? CoRR abs/1901.07337 (2019) - [i215]Andreas Thor, Lutz Bornmann, Robin Haunschild, Loet Leydesdorff:
Which are the influential publications in the Web of Science subject categories over a long period of time? CRExplorer software used for big-data analyses in bibliometrics. CoRR abs/1901.08775 (2019) - [i214]Gangan Prathap, Loet Leydesdorff:
Impact factors, Within-Journal Self-citations, and the Pinski-Narin Influence Weights: An analysis using both subfields and the complete Journal Citation Reports 2017. CoRR abs/1905.01725 (2019) - [i213]Lutz Bornmann, Christian Ganser, Alexander Tekles, Loet Leydesdorff:
Does the hα index reinforce the Matthew effect in science? Agent-based simulations using Stata and R. CoRR abs/1905.11052 (2019) - 2018
- [i212]Jordan A. Comins, Loet Leydesdorff:
Data-mining the Foundational Patents of Photovoltaic Materials: An application of Patent Citation Spectroscopy. CoRR abs/1801.09479 (2018) - [i211]Lutz Bornmann, Jonathan Adams, Loet Leydesdorff:
The negative effects of citing with a national orientation in terms of recognition: national and international citations in papers from Germany, the Netherlands, and UK. CoRR abs/1802.00983 (2018) - [i210]Loet Leydesdorff, Caroline S. Wagner, Lutz Bornmann:
Discontinuities in Citation Relations among Journals: Self-organized Criticality as a Model of Scientific Revolutions and Change. CoRR abs/1803.00554 (2018) - [i209]Loet Leydesdorff:
Diversity and Interdisciplinarity: How Can One Distinguish and Recombine Disparity, Variety, and Balance? CoRR abs/1803.09317 (2018) - [i208]Loet Leydesdorff, Ivan Cucco:
Regions, Innovation Systems, and the North-South Divide in Italy. CoRR abs/1805.11821 (2018) - [i207]Tobias Hecking, Loet Leydesdorff:
Topic Modelling of Empirical Text Corpora: Validity, Reliability, and Reproducibility in Comparison to Semantic Maps. CoRR abs/1806.01045 (2018) - [i206]Loet Leydesdorff, Caroline S. Wagner, Lutz Bornmann:
Interdisciplinarity as Diversity in Citation Patterns among Journals: Rao-Stirling Diversity, Relative Variety, and the Gini coefficient. CoRR abs/1807.04115 (2018) - [i205]Loet Leydesdorff, Tobias Opthof:
Revisiting Relative Indicators and Provisional Truths. CoRR abs/1808.09665 (2018) - [i204]Loet Leydesdorff, Lutz Bornmann, Tobias Opthof:
hα: The Scientist as Chimpanzee or Bonobo. CoRR abs/1810.06998 (2018) - [i203]Robin Haunschild, Loet Leydesdorff, Lutz Bornmann, Iina Hellsten, Werner Marx:
Does the public discuss other topics on climate change than researchers? A comparison of networks based on author keywords and hashtags. CoRR abs/1810.07456 (2018) - [i202]Loet Leydesdorff, Lutz Bornmann, Jonathan Adams:
I3: A Non-Parametric Alternative to the Journal Impact Factor. CoRR abs/1812.03448 (2018) - 2017
- [i201]Loet Leydesdorff, Mark William Johnson, Inga A. Ivanova:
Toward a Calculus of Redundancy: The feedback arrow of expectations in knowledge-based systems. CoRR abs/1701.02455 (2017) - [i200]Loet Leydesdorff, Dieter Franz Kogler, Bowen Yan:
Mapping Patent Classifications: Portfolio and Statistical Analysis, and the Comparison of Strengths and Weaknesses. CoRR abs/1702.07481 (2017) - [i199]Loet Leydesdorff, Caroline S. Wagner, Lutz Bornmann:
Betweenness and Diversity in Journal Citation Networks as Measures of Interdisciplinarity - A Tribute to Eugene Garfield -. CoRR abs/1705.03272 (2017) - [i198]Helen F. Xue, Loet Leydesdorff, Fred Y. Ye:
Probing Multivariate Indicators for Academic Evaluation. CoRR abs/1707.01635 (2017) - [i197]Lutz Bornmann, Robin Haunschild, Loet Leydesdorff:
Reference Publication Year Spectroscopy (RPYS) of Eugene Garfield's publications. CoRR abs/1708.04442 (2017) - [i196]Lutz Bornmann, Caroline S. Wagner, Loet Leydesdorff:
The geography of references in elite articles: What countries contribute to the archives of knowledge. CoRR abs/1709.06479 (2017) - [i195]Jordan A. Comins, Stephanie A. Carmack, Loet Leydesdorff:
Patent Citation Spectroscopy (PCS): Algorithmic retrieval of landmark patents. CoRR abs/1710.03349 (2017) - [i194]Loet Leydesdorff, Caroline S. Wagner, Igone Porto Gómez, Jordan A. Comins, Fred Y. Phillips:
Synergy in the Knowledge Base of U.S. Innovation Systems at National, State, and Regional Levels: The Contributions of High-Tech Manufacturing and Knowledge-Intensive Services. CoRR abs/1710.11017 (2017) - [i193]Loet Leydesdorff, Lutz Bornmann, John Mingers:
Statistical Significance and Effect Sizes of Differences among Research Universities at the Level of Nations and Worldwide based on the Leiden Rankings. CoRR abs/1710.11020 (2017) - [i192]Iina Hellsten, Loet Leydesdorff:
Automated Analysis of Topic-Actor Networks on Twitter: New approach to the analysis of socio-semantic networks. CoRR abs/1711.08387 (2017) - [i191]Loet Leydesdorff, Lutz Bornmann, Caroline S. Wagner:
The relative influences of government funding and international collaboration on citation impact. CoRR abs/1712.04659 (2017) - 2016
- [i190]Jordan A. Comins, Loet Leydesdorff:
Identification of long-term concept-symbols among citations: Can documents be clustered in terms of common intellectual histories? CoRR abs/1601.00288 (2016) - [i189]Andreas Thor, Werner Marx, Loet Leydesdorff, Lutz Bornmann:
Introducing CitedReferencesExplorer (CRExplorer): A program for Reference Publication Year Spectroscopy with Cited References Disambiguation. CoRR abs/1601.01199 (2016) - [i188]Jordan A. Comins, Loet Leydesdorff:
RPYS i/o: A web-based tool for the historiography and visualization of citation classics, sleeping beauties, and research fronts. CoRR abs/1602.01950 (2016) - [i187]Inga A. Ivanova, Øivind Strand, Duncan Kushnir, Loet Leydesdorff:
Economic and Technological Complexity: A Model Study of Indicators of Knowledge-based Innovation Systems. CoRR abs/1602.02348 (2016) - [i186]Loet Leydesdorff, Lutz Bornmann, Jordan A. Comins, Stasa Milojevic:
Citations: Indicators of Quality? The Impact Fallacy. CoRR abs/1603.08452 (2016) - [i185]Loet Leydesdorff, Lutz Bornmann, Ping Zhou:
A Reproducible Journal Classification and Global Map of Science Based on Aggregated Journal-Journal Citation Relations. CoRR abs/1604.02716 (2016) - [i184]Loet Leydesdorff, Lutz Bornmann, Jordan A. Comins, Werner Marx, Andreas Thor:
Referenced Publication Year Spectroscopy (RPYS) and Algorithmic Historiography: The Bibliometric Reconstruction of András Schubert's Œuvre. CoRR abs/1604.04705 (2016) - [i183]Han Woo Park, Jungwon Yoon, Loet Leydesdorff:
The Normalization of Co-authorship Networks in the Bibliometric Evaluation: The Government Stimulation Programs of China and Korea. CoRR abs/1605.03593 (2016) - [i182]Inga A. Ivanova, Øivind Strand, Loet Leydesdorff:
What is the effect of synergy in international collaboration on regional economies? CoRR abs/1605.06013 (2016) - [i181]Andreas Thor, Werner Marx, Loet Leydesdorff, Lutz Bornmann:
New features of CitedReferencesExplorer (CRExplorer). CoRR abs/1607.01266 (2016) - [i180]Loet Leydesdorff, Jordan A. Comins, Aaron A. Sorensen, Lutz Bornmann, Iina Hellsten:
Cited References and Medical Subject Headings (MeSH) as Two Different Knowledge Representations: Clustering and Mappings at the Paper Level. CoRR abs/1607.06263 (2016) - [i179]Loet Leydesdorff, Inga A. Ivanova:
"Open Innovation" and "Triple Helix" Models of Innovation: Can Synergy in Innovation Systems Be Measured? CoRR abs/1607.08090 (2016) - [i178]Loet Leydesdorff, Paul Wouters, Lutz Bornmann:
Professional and Citizen Bibliometrics: Complementarities and ambivalences in the development and use of indicators. CoRR abs/1609.04793 (2016) - [i177]A. I. M. Jakaria Rahman, Raf Guns, Loet Leydesdorff, Tim C. E. Engels:
Measuring the match between evaluators and evaluees: Cognitive distances between panel members and research groups at the journal level. CoRR abs/1609.07171 (2016) - [i176]Loet Leydesdorff, Lutz Bornmann, Caroline S. Wagner:
Generating Clustered Journal Maps: An Automated System for Hierarchical Classification. CoRR abs/1610.03779 (2016) - [i175]Jordan A. Comins, Loet Leydesdorff:
Citation algorithms for identifying research milestones driving biomedical innovation. CoRR abs/1611.01658 (2016) - [i174]Lutz Bornmann, Loet Leydesdorff:
Skewness of citation impact data and covariates of citation distributions: A large-scale empirical analysis based on Web of Science data. CoRR abs/1611.01935 (2016) - [i173]Loet Leydesdorff, Han Woo Park:
Full and Fractional Counting in Bibliometric Networks. CoRR abs/1611.06943 (2016) - [i172]Dieter Franz Kogler, Gaston Heimeriks, Loet Leydesdorff:
Patent Portfolio Analysis of Cities: Statistics and Maps of Technological Inventiveness. CoRR abs/1612.05810 (2016) - [i171]Caroline S. Wagner, Travis A. Whetsell, Loet Leydesdorff:
Growth of International Cooperation in Science: Revisiting Six Case Studies. CoRR abs/1612.07208 (2016) - 2015
- [i170]John Mingers, Loet Leydesdorff:
A Review of Theory and Practice in Scientometrics. CoRR abs/1501.05462 (2015) - [i169]Loet Leydesdorff:
Can "Hot Spots" in the Sciences Be Mapped Using the Dynamics of Aggregated Journal-Journal Citation Relations? CoRR abs/1502.00229 (2015) - [i168]Inga A. Ivanova, Loet Leydesdorff:
Knowledge-generating Efficiency in Innovation Systems: The relation between structural and temporal effects. CoRR abs/1502.05145 (2015) - [i167]Loet Leydesdorff, Gaston Heimeriks, Daniele Rotolo:
Journal Portfolio Analysis for Countries, Cities, and Organizations: Maps and Comparisons. CoRR abs/1502.05676 (2015) - [i166]Loet Leydesdorff:
Bibliometrics/Citation networks. CoRR abs/1502.06378 (2015) - [i165]Qiuju Zhou, Loet Leydesdorff:
The Normalization of Occurrence and Co-occurrence Matrices in Bibliometrics using Cosine Similarities and Ochiai Coefficients. CoRR abs/1503.08944 (2015) - [i164]Johann Bauer, Loet Leydesdorff, Lutz Bornmann:
Highly-cited papers in Library and Information Science (LIS): Authors, institutions, and network structures. CoRR abs/1504.02576 (2015) - [i163]Loet Leydesdorff:
Can the Intellectual Processes in Science Also Be Simulated? The Anticipation and Visualization of Possible Future States. CoRR abs/1504.04801 (2015) - [i162]Wouter de Nooy, Loet Leydesdorff:
The Dynamics of Triads in Aggregated Journal-Journal Citation Relations: Specialty Developments at the Above-Journal Level. CoRR abs/1504.05840 (2015) - [i161]Robin Haunschild, Lutz Bornmann, Loet Leydesdorff:
Networks of reader and country status: An analysis of Mendeley reader statistics. CoRR abs/1504.07482 (2015) - [i160]Loet Leydesdorff:
Scientometrics and Science Studies: From Words and Co-Words to Information and Probabilistic Entropy. CoRR abs/1505.06007 (2015) - [i159]Loet Leydesdorff, Alexander M. Petersen, Inga A. Ivanova:
The Self-Organization of Meaning and the Reflexive Communication of Information. CoRR abs/1507.05251 (2015) - [i158]Loet Leydesdorff, Caroline S. Wagner, Lutz Bornmann:
Replicability and the public/private divide. CoRR abs/1509.08798 (2015) - [i157]Gabriel Velez-Cuartas, Diana Lucio-Arias, Loet Leydesdorff:
Regional and Global Science: Latin American and Caribbean publications in the SciELO Citation Index and the Web of Science. CoRR abs/1510.02453 (2015) - [i156]Loet Leydesdorff, Adina Nerghes:
Co-word Maps and Topic Modeling: A Comparison from a User's Perspective. CoRR abs/1511.03020 (2015) - [i155]Loet Leydesdorff, Henry Etzkowitz, Duncan Kushnir:
The Globalization of Academic Entrepreneurship? The Recent Growth (2009-2014) in University Patenting Decomposed. CoRR abs/1512.04214 (2015) - [i154]Alexander M. Petersen, Daniele Rotolo, Loet Leydesdorff:
The Interaction of 'Supply', 'Demand', and 'Technological Capabilities' in terms of Medical Subject Headings: A Triple Helix Model of Medical Innovation. CoRR abs/1512.07250 (2015) - 2014
- [i153]Loet Leydesdorff, Han Woo Park:
Can Synergy in Triple-Helix Relations be Quantified? A Review of the Development of the Triple-Helix Indicator. CoRR abs/1401.2342 (2014) - [i152]Loet Leydesdorff, Floortje Alkemade, Gaston Heimeriks, Rinke Hoekstra:
Geographic and Technological Perspectives on "Photovoltaic Cells: " Patents as Instruments for Exploring Innovation Dynamics. CoRR abs/1401.2778 (2014) - [i151]Loet Leydesdorff, Caroline S. Wagner, Lutz Bornmann:
The European Union, China, and the United States in the Top-1% and Top-10% Layers of Most-Frequently-Cited Publications: Competition and Collaborations. CoRR abs/1404.0462 (2014) - [i150]Loet Leydesdorff, Félix de Moya-Anegón, Wouter de Nooy:
Aggregated journal-journal citation relations in Scopus and Web-of-Science matched and compared in terms of networks, maps, and interactive overlays. CoRR abs/1404.2505 (2014) - [i149]Lutz Bornmann, Caroline S. Wagner, Loet Leydesdorff:
BRICS countries and scientific excellence: A bibliometric analysis of most frequently-cited papers. CoRR abs/1404.3721 (2014) - [i148]Caroline S. Wagner, Loet Leydesdorff, Lutz Bornmann:
Recent Developments in China-U.S. Science Cooperation. CoRR abs/1404.6545 (2014) - [i147]Daniele Rotolo, Loet Leydesdorff:
Matching MEDLINE/PubMed Data with Web of Science (WoS): A Routine in R-language. CoRR abs/1406.4161 (2014) - [i146]Loet Leydesdorff:
Information, Meaning, and Intellectual Organization in Networks of Inter-Human Communication. CoRR abs/1406.5688 (2014) - [i145]Loet Leydesdorff, Lutz Bornmann:
The Operationalization of "Fields" as WoS Subject Categories (WCs) in Evaluative Bibliometrics: The cases of "Library and Information Science" and "Science & Technology Studies". CoRR abs/1407.7849 (2014) - [i144]Inga A. Ivanova, Øivind Strand, Loet Leydesdorff:
Synergy cycles in the Norwegian innovation system: The relation between synergy and cycle values. CoRR abs/1409.2760 (2014) - [i143]Loet Leydesdorff, Gohar Feroz Khan, Lutz Bornmann:
The Generation of Large Networks from Web-of-Science Data. CoRR abs/1409.4898 (2014) - [i142]Loet Leydesdorff, Wouter de Nooy, Lutz Bornmann, Gangan Prathap:
The "Tournaments" Metaphor in Citation Impact Studies: Power-Weakness Ratios (PWR) as a Journal Indicator. CoRR abs/1411.0906 (2014) - [i141]Loet Leydesdorff:
Can Technology Life-Cycles Be Indicated by Diversity in Patent Classifications? CoRR abs/1411.2858 (2014) - 2013
- [i140]Loet Leydesdorff, Caroline S. Wagner, Han Woo Park, Jonathan Adams:
International Collaboration in Science: The Global Map and the Network. CoRR abs/1301.0801 (2013) - [i139]Loet Leydesdorff, Ismael Ràfols, Chaomei Chen:
Interactive Overlays of Journals and the Measurement of Interdisciplinarity on the basis of Aggregated Journal-Journal Citations. CoRR abs/1301.1013 (2013) - [i138]Balázs Lengyel, Tamás Sebestyén, Loet Leydesdorff:
USPTO Patent Maps in Central Europe: Can "Cathedrals" be Built on the Ruins of Socialism? CoRR abs/1301.1757 (2013) - [i137]Jonathan Adams, Karen Gurney, Daniel W. Hook, Loet Leydesdorff:
International collaboration clusters in Africa. CoRR abs/1301.5159 (2013) - [i136]Loet Leydesdorff, Inga A. Ivanova:
Mutual Redundancies in Inter-human Communication Systems: Steps Towards a Calculus of Processing Meaning. CoRR abs/1301.6849 (2013) - [i135]Loet Leydesdorff, Martin Meyer:
Technology Transfer and the End of the Bayh-Dole Effect: Patents as an Analytical Lens on University-Industry-Government Relations. CoRR abs/1302.4864 (2013) - [i134]Susanne E. Baumgartner, Loet Leydesdorff:
Group-Based Trajectory Modeling of Citations in Scholarly Literature: Dynamic Qualities of "Transient" and "Sticky Knowledge Claims". CoRR abs/1303.4366 (2013) - [i133]Daniele Rotolo, Ismael Ràfols, Michael M. Hopkins, Loet Leydesdorff:
Mapping the De Facto Governance of Emerging Science and Technologies. CoRR abs/1303.4672 (2013) - [i132]Loet Leydesdorff, Han Woo Park, Caroline S. Wagner:
International Co-authorship Relations in the Social Science Citation Index: Is Internationalization Leading the Network? CoRR abs/1305.4242 (2013) - [i131]Loet Leydesdorff, Ping Zhou:
Measuring the Knowledge-Based Economy of China in terms of Synergy among Technological, Organizational, and Geographic Attributes of Firms. CoRR abs/1305.6862 (2013) - [i130]Loet Leydesdorff:
Elsevier's Scopus has a revised SNIP indicator for journal ranking. CoRR abs/1306.3771 (2013) - [i129]Lutz Bornmann, Loet Leydesdorff, Jian Wang:
Which percentile-based approach should be preferred for calculating normalized citation impact values? An empirical comparison of five approaches including a newly developed one (P100). CoRR abs/1306.4454 (2013) - [i128]Fred Y. Ye, Loet Leydesdorff:
The "Academic Trace" of the Performance Matrix: A Mathematical Synthesis of the h-Index and the Integrated Impact Indicator (I3). CoRR abs/1307.3616 (2013) - [i127]Werner Marx, Lutz Bornmann, Andreas Barth, Loet Leydesdorff:
Detecting the historical roots of research fields by reference publication year spectroscopy (RPYS). CoRR abs/1307.8239 (2013) - [i126]Inga A. Ivanova, Loet Leydesdorff:
Redundancy Generation in University-Industry-Government Relations: The Triple Helix Modeled, Measured, and Simulated. CoRR abs/1308.3836 (2013) - [i125]Loet Leydesdorff, Lutz Bornmann, Werner Marx, Stasa Milojevic:
The historical roots of iMetrics: Referenced Publication Years Spectroscopy (RPYS) routinized and applied to Scientometrics, Journal of Informetrics, and (a subset of) JASIST. CoRR abs/1309.5706 (2013) - [i124]Loet Leydesdorff, Evgeniy Perevodchikov, Alexander Uvarov:
Measuring Triple-Helix Synergy in the Russian Innovation Systems at Regional, Provincial and National Levels. CoRR abs/1310.3040 (2013) - [i123]Loet Leydesdorff, Félix de Moya-Anegón, Vicente P. Guerrero-Bote:
Journal Maps, Interactive Overlays, and the Measurement of Interdisciplinarity on the Basis of Scopus Data (1996-2012). CoRR abs/1310.4966 (2013) - [i122]Lutz Bornmann, Loet Leydesdorff, Jian Wang:
How to improve the prediction based on citation impact percentiles for years shortly after the publication date? CoRR abs/1311.4731 (2013) - [i121]Marcin Kozak, Lutz Bornmann, Loet Leydesdorff:
How have the Eastern European countries of the former Warsaw Pact developed since 1990? A bibliometric study. CoRR abs/1312.3077 (2013) - 2012
- [i120]Loet Leydesdorff:
The Knowledge-Based Economy and the Triple Helix Model. CoRR abs/1201.4553 (2012) - [i119]Loet Leydesdorff:
Alternatives to the Journal Impact Factor: I3 and the Top-10% (or Top-25%?) of the Most-Highly Cited Papers. CoRR abs/1201.4638 (2012) - [i118]Loet Leydesdorff, Stephen Carley, Ismael Ràfols:
Global Maps of Science based on the new Web-of-Science Categories. CoRR abs/1202.1914 (2012) - [i117]Loet Leydesdorff:
McCall's Area Transformation versus the Integrated Impact Indicator (I3). CoRR abs/1202.4133 (2012) - [i116]Loet Leydesdorff, Daniele Rotolo, Wouter de Nooy:
Innovation as a Nonlinear Process, the Scientometric Perspective, and the Specification of an "Innovation Opportunities Explorer". CoRR abs/1202.6235 (2012) - [i115]Loet Leydesdorff, Daniele Rotolo, Ismael Ràfols:
Bibliometric Perspectives on Medical Innovation using the Medical Subject Headings (MeSH) of PubMed. CoRR abs/1203.1006 (2012) - [i114]Loet Leydesdorff, Tobias Opthof:
Citation Analysis with Medical Subject Headings (MeSH) using the Web of Knowledge: A new routine. CoRR abs/1203.4725 (2012) - [i113]Loet Leydesdorff:
Accounting for the Uncertainty in the Evaluation of Percentile Ranks. CoRR abs/1204.1894 (2012) - [i112]Loet Leydesdorff, Ulrike Felt:
Edited Volumes, Monographs, and Chapters in the Book Citation Index (BKCI) and Science Citation Index (SCI, SoSCI, A&HCI). CoRR abs/1204.3717 (2012) - [i111]Loet Leydesdorff, Ping Zhou, Lutz Bornmann:
How Can Journal Impact Factors be. CoRR abs/1205.0668 (2012) - [i110]Lutz Bornmann, Loet Leydesdorff:
Citation impact of papers published from six prolific countries: A national comparison based on InCites data. CoRR abs/1205.0680 (2012) - [i109]Caroline S. Wagner, Loet Leydesdorff:
An Integrated Impact Indicator (I3): A New Definition of "Impact" with Policy Relevance. CoRR abs/1205.1419 (2012) - [i108]Loet Leydesdorff:
Advances in Science Visualization: Social Networks, Semantic Maps, and Discursive Knowledge. CoRR abs/1206.3746 (2012) - [i107]Loet Leydesdorff:
Statistics for the Dynamic Analysis of Scientometric Data: The evolution of the sciences in terms of trajectories and regimes. CoRR abs/1206.3747 (2012) - [i106]Loet Leydesdorff, Stasa Milojevic:
Scientometrics. CoRR abs/1208.4566 (2012) - [i105]Fred Y. Ye, Susan S. Yu, Loet Leydesdorff:
The Triple Helix of University-Industry-Government Relations at the Country Level, and Its Dynamic Evolution under the Pressures of Globalization. CoRR abs/1209.1260 (2012) - [i104]Stasa Milojevic, Loet Leydesdorff:
Information Metrics (iMetrics): A Research Specialty with a Socio-Cognitive Identity? CoRR abs/1209.3406 (2012) - [i103]Loet Leydesdorff, Øivind Strand:
The Swedish System of Innovation: Regional Synergies in a Knowledge-Based Economy. CoRR abs/1210.4396 (2012) - [i102]Loet Leydesdorff, Duncan Kushnir, Ismael Ràfols:
Interactive Overlay Maps for US Patent (USPTO) Data Based on International Patent Classifications (IPC). CoRR abs/1210.6456 (2012) - [i101]Lutz Bornmann, Loet Leydesdorff, Rüdiger Mutz:
The use of percentiles and percentile rank classes in the analysis of bibliometric data: Opportunities and limits. CoRR abs/1211.0381 (2012) - [i100]Lutz Bornmann, Loet Leydesdorff:
The validation of (advanced) bibliometric indicators through peer assessments: A comparative study using data from InCites and F1000. CoRR abs/1211.1154 (2012) - [i99]Loet Leydesdorff, Filippo Radicchi, Lutz Bornmann, Claudio Castellano, Wouter de Nooy:
Field-normalized Impact Factors: A Comparison of Rescaling versus Fractionally Counted IFs. CoRR abs/1211.2571 (2012) - [i98]Inga A. Ivanova, Loet Leydesdorff:
Rotational Symmetry and the Transformation of Innovation Systems in a Triple Helix of University-Industry-Government Relations. CoRR abs/1211.2573 (2012) - [i97]Erjia Yan, Ying Ding, Blaise Cronin, Loet Leydesdorff:
A bird's-eye view of scientific trading: Dependency relations among fields of science. CoRR abs/1211.5820 (2012) - [i96]Loet Leydesdorff, Han Woo Park, Balázs Lengyel:
A Routine for Measuring Synergy in University-Industry-Government Relations: Mutual Information as a Triple-Helix and Quadruple-Helix Indicator. CoRR abs/1211.7230 (2012) - [i95]Loet Leydesdorff, Robert L. Goldstone:
Interdisciplinarity at the Journal and Specialty Level: The changing knowledge bases of the journal Cognitive Science. CoRR abs/1212.0823 (2012) - [i94]John Mingers, Loet Leydesdorff:
Identifying Research Fields within Business and Management: A Journal Cross-Citation Analysis. CoRR abs/1212.6773 (2012) - 2011
- [i93]Gaston Heimeriks, Loet Leydesdorff:
Emerging Search Regimes: Measuring Co-evolutions among Research, Science, and Society. CoRR abs/1101.2591 (2011) - [i92]Loet Leydesdorff, Lutz Bornmann, Rüdiger Mutz, Tobias Opthof:
Normalizing the measurement of citation performance: Principles for comparing sets of documents. CoRR abs/1101.3863 (2011) - [i91]Ping Zhou, Loet Leydesdorff:
Fractional counting of citations in research evaluation: A cross- and interdisciplinary assessment of the Tsinghua University in Beijing. CoRR abs/1101.4750 (2011) - [i90]Loet Leydesdorff, Björn Hammarfelt, Alkim Almila Akdag Salah:
The structure of the Arts & Humanities Citation Index: A mapping on the basis of aggregated citations among 1,157 journals. CoRR abs/1102.1934 (2011) - [i89]Ronald Rousseau, Loet Leydesdorff:
Non-consistency, non-cited items, and the impact factor: A consequence of the arithmetic. CoRR abs/1102.2567 (2011) - [i88]Tobias Opthof, Loet Leydesdorff:
Citation analysis cannot legitimate the strategic selection of excellence. CoRR abs/1102.2569 (2011) - [i87]Robert D. Shelton, Loet Leydesdorff:
Publish or Patent: Bibliometric evidence for empirical trade-offs in national funding strategies. CoRR abs/1102.3047 (2011) - [i86]Lutz Bornmann, Loet Leydesdorff:
Which cities produce excellent papers worldwide more than can be expected? A new mapping approach--using Google Maps--based on statistical significance testing. CoRR abs/1103.3216 (2011) - [i85]Loet Leydesdorff, Lutz Bornmann:
Integrated Impact Indicators (I3) compared with Impact Factors (IFs): An alternative research design with policy implications. CoRR abs/1103.5241 (2011) - [i84]Ismael Ràfols, Loet Leydesdorff, Alice O'Hare, Paul Nightingale, Andy Stirling:
How journal rankings can suppress interdisciplinarity. The case of innovation studies in business and management. CoRR abs/1105.1227 (2011) - [i83]Loet Leydesdorff, Ismael Ràfols:
Interactive Overlays: A New Method for Generating Global Journal Maps from Web-of-Science Data. CoRR abs/1105.2925 (2011) - [i82]Loet Leydesdorff:
Book review: Katy Börner, Atlas of Science: Visualizing What We Know. Cambridge, MA/ London UK: The MIT Press, 2010. CoRR abs/1105.3469 (2011) - [i81]Lutz Bornmann, Loet Leydesdorff, Christiane Walch-Solimena, Christoph Ettl:
Mapping excellence in the geography of science: An approach based on Scopus data. CoRR abs/1105.4736 (2011) - [i80]Loet Leydesdorff:
Hyperincursive Cogitata and Incursive Cogitantes: Scholarly Discourse as a Strongly Anticipatory System. CoRR abs/1106.5651 (2011) - [i79]Loet Leydesdorff, Tobias Opthof:
A Rejoinder on Energy versus Impact Indicators. CoRR abs/1108.5845 (2011) - [i78]Lutz Bornmann, Loet Leydesdorff:
Which cities' paper output and citation impact are above expectation in information science? Some improvements of our previous mapping approaches. CoRR abs/1109.1173 (2011) - [i77]Loet Leydesdorff:
An Evaluation of Impacts in "Nanoscience & nanotechnology:" Steps towards standards for citation analysis. CoRR abs/1109.2306 (2011) - [i76]Loet Leydesdorff:
World Shares of Publications of the USA, EU-27, and China Compared and Predicted using the New Interface of the Web-of-Science versus Scopus. CoRR abs/1110.1802 (2011) - [i75]Lutz Bornmann, Félix de Moya-Anegón, Loet Leydesdorff:
The new Excellence Indicator in the World Report of the SCImago Institutions Rankings 2011. CoRR abs/1110.2305 (2011) - [i74]Loet Leydesdorff, Lutz Bornmann:
Mapping (USPTO) Patent Data using Overlays to Google Maps. CoRR abs/1110.5712 (2011) - [i73]Michelina Venditti, Emanuela Reale, Loet Leydesdorff:
The Disclosure of University Research for Societal Demand: A Non-Market Perspective on the "Third Mission". CoRR abs/1111.5684 (2011) - [i72]Alireza Abbasi, Liaquat Hossain, Loet Leydesdorff:
Betweenness Centrality as a Driver of Preferential Attachment in the Evolution of Research Collaboration Networks. CoRR abs/1111.6804 (2011) - [i71]Loet Leydesdorff, Lutz Bornmann:
Testing Differences Statistically with the Leiden Ranking. CoRR abs/1112.4037 (2011) - [i70]Loet Leydesdorff, Lutz Bornmann:
Percentile Ranks and the Integrated Impact Indicator (I3). CoRR abs/1112.6281 (2011) - [i69]Esther Vlieger, Loet Leydesdorff:
Visualization and Analysis of Frames in Collections of Messages: Content Analysis and the Measurement of Meaning. CoRR abs/1112.6286 (2011) - 2010
- [i68]Loet Leydesdorff:
Redundancy in Systems which Entertain a Model of Themselves: Interaction Information and the Self-organization of Anticipation. CoRR abs/1001.1143 (2010) - [i67]Loet Leydesdorff:
Knowledge-Based Innovation Systems and the Model of a Triple Helix of University-Industry-Government Relations. CoRR abs/1001.1308 (2010) - [i66]Yuko Fujigaki, Loet Leydesdorff:
Quality Control and Validation Boundaries in a Triple Helix of University-Industry-Government: 'Mode 2' and the Future of University Research. CoRR abs/1001.1315 (2010) - [i65]Gaston Heimeriks, Loet Leydesdorff, Peter van den Besselaar:
Distributed scientific communication in the European information society: Some cases of "Mode 2" fields of research. CoRR abs/1001.1320 (2010) - [i64]Iina Hellsten, James Dawson, Loet Leydesdorff:
Implicit media frames: Automated analysis of public debate on artificial sweeteners. CoRR abs/1001.4368 (2010) - [i63]Loet Leydesdorff, Peter van den Besselaar:
Scientometrics and Communication Theory: Towards Theoretically Informed Indicators. CoRR abs/1001.4433 (2010) - [i62]Loet Leydesdorff, Olle Persson:
Mapping the Geography of Science: Distribution Patterns and Networks of Relations among Cities and Institutes. CoRR abs/1001.5016 (2010) - [i61]Wilfred Dolfsma, Loet Leydesdorff:
The Citation Field of Evolutionary Economics. CoRR abs/1001.5018 (2010) - [i60]Loet Leydesdorff:
What Can Heterogeneity Add to the Scientometric Map? Steps towards algorithmic historiography. CoRR abs/1002.0532 (2010) - [i59]Tobias Opthof, Loet Leydesdorff:
Caveats for the journal and field normalizations in the CWTS ("Leiden") evaluations of research performance. CoRR abs/1002.2769 (2010) - [i58]Loet Leydesdorff, Ismael Ràfols:
Indicators of the Interdisciplinarity of Journals: Diversity, Centrality, and Citations. CoRR abs/1003.3613 (2010) - [i57]Loet Leydesdorff, Tobias Opthof:
Scopus's Source Normalized Impact per Paper (SNIP) versus a Journal Impact Factor based on Fractional Counting of Citations. CoRR abs/1004.3580 (2010) - [i56]Loet Leydesdorff:
The Production of Probabilistic Entropy in Structure/Action Contingency Relations. CoRR abs/1005.0707 (2010) - [i55]Loet Leydesdorff:
Eugene Garfield and Algorithmic Historiography: Co-Words, Co-Authors, and Journal Names. CoRR abs/1005.5444 (2010) - [i54]Loet Leydesdorff, Tobias Opthof:
Scopus' SNIP Indicator. CoRR abs/1006.2895 (2010) - [i53]Loet Leydesdorff, Tobias Opthof:
Normalization at the field level: fractional counting of citations. CoRR abs/1006.2896 (2010) - [i52]Loet Leydesdorff, Lutz Bornmann:
How fractional counting affects the Impact Factor: Steps towards field-independent classifications of scholarly journals and literature. CoRR abs/1007.4749 (2010) - [i51]Alkim Almila Akdag Salah, Loet Leydesdorff:
The Development of the Journal Environment of Leonardo. CoRR abs/1009.1466 (2010) - [i50]Loet Leydesdorff, Tobias Opthof:
Remaining problems with the "New Crown Indicator" (MNCS) of the CWTS. CoRR abs/1010.2379 (2010) - [i49]Loet Leydesdorff, Jung C. Shin:
How to evaluate universities in terms of their relative citation impacts: Fractional counting of citations and the normalization of differences among disciplines. CoRR abs/1010.2465 (2010) - [i48]Loet Leydesdorff, Ismael Ràfols:
How Do Emerging Technologies Conquer the World? An Exploration of Patterns of Diffusion and Network Formation. CoRR abs/1011.3120 (2010) - [i47]Loet Leydesdorff:
"Meaning" as a sociological concept: A review of the modeling, mapping, and simulation of the communication of knowledge and meaning. CoRR abs/1011.3244 (2010) - [i46]Loet Leydesdorff, Kasper Welbers:
The semantic mapping of words and co-words in contexts. CoRR abs/1011.5209 (2010) - [i45]Ping Zhou, Loet Leydesdorff:
Fractional counting of citations in research evaluation: An option for cross- and interdisciplinary assessments. CoRR abs/1012.0359 (2010) - [i44]Shi Aolan, Loet Leydesdorff:
What the Cited and Citing Environments Reveal of "Advances in Atmospheric Sciences"? CoRR abs/1012.1939 (2010) - [i43]Loet Leydesdorff:
"Structuration" by Intellectual Organization: The Configuration of Knowledge in Relations among Structural Components in Networks of Science. CoRR abs/1012.5735 (2010) - 2009
- [i42]Loet Leydesdorff:
How are new citation-based journal indicators adding to the bibliometric toolbox? CoRR abs/0909.4457 (2009) - [i41]Ricardo Arencibia Jorge, Loet Leydesdorff, Zaida Chinchilla-Rodríguez, Ronald Rousseau, Soren W. Paris:
Retrieval of very large numbers of items in the Web of Science: an exercise to develop accurate search strategies. CoRR abs/0911.1305 (2009) - [i40]Diana Lucio-Arias, Loet Leydesdorff:
The Dynamics of Exchanges and References among Scientific Texts, and the Autopoiesis of Discursive Knowledge. CoRR abs/0911.1308 (2009) - [i39]Leo Egghe, Loet Leydesdorff:
The relation between Pearson's correlation coefficient r and Salton's cosine measure. CoRR abs/0911.1318 (2009) - [i38]Han Park, Loet Leydesdorff:
Knowledge linkage structures in communication studies using citation analysis among communication journals. CoRR abs/0911.1320 (2009) - [i37]Loet Leydesdorff:
Caveats for the Use of Citation Indicators in Research and Journal Evaluations. CoRR abs/0911.1440 (2009) - [i36]Loet Leydesdorff:
The delineation of nanoscience and nanotechnology in terms of journals and patents: a most recent update. CoRR abs/0911.1445 (2009) - [i35]Loet Leydesdorff:
On the Normalization and Visualization of Author Co-Citation Data Salton's Cosine versus the Jaccard Index. CoRR abs/0911.1447 (2009) - [i34]Loet Leydesdorff, Ping Zhou:
Co-word Analysis using the Chinese Character Set. CoRR abs/0911.1451 (2009) - [i33]Diana Lucio-Arias, Loet Leydesdorff:
Main-path analysis and path-dependent transitions in HistCite(TM)-based historiograms. CoRR abs/0911.1454 (2009) - [i32]Han Woo Park, Loet Leydesdorff:
Korean journals in the Science Citation Index: What do they reveal about the intellectual structure of S&T in Korea? CoRR abs/0911.1456 (2009) - [i31]Wilfred Dolfsma, Loet Leydesdorff:
Journals as constituents of scientific discourse: economic heterodoxy. CoRR abs/0911.2364 (2009) - [i30]Loet Leydesdorff:
Visualization of the Citation Impact Environments of Scientific Journals: An online mapping exercise. CoRR abs/0911.2731 (2009) - [i29]Lutz Bornmann, Loet Leydesdorff, Werner Marx:
Citation Environment of Angewandte Chemie. CoRR abs/0911.3086 (2009) - [i28]Ping Zhou, Loet Leydesdorff:
A Comparison between the China Scientific and Technical Papers and Citations Database and the Science Citation Index in terms of journal hierarchies and inter-journal citation relations. CoRR abs/0911.3087 (2009) - [i27]Ping Zhou, Loet Leydesdorff:
The Citation Impacts and Citation Environments of Chinese Journals in Mathematics. CoRR abs/0911.3091 (2009) - [i26]Loet Leydesdorff:
Indicators of Structural Change in the Dynamics of Science: Entropy Statistics of the SCI Journal Citation Reports. CoRR abs/0911.3093 (2009) - [i25]Loet Leydesdorff:
Environment and Planning B as a Journal: The interdisciplinarity of its environment and the citation impact. CoRR abs/0911.3095 (2009) - [i24]Loet Leydesdorff, Iina Hellsten:
Measuring the Meaning of Words in Contexts: An automated analysis of controversies about Monarch butterflies, Frankenfoods, and stem cells. CoRR abs/0911.3411 (2009) - [i23]Loet Leydesdorff:
Can Scientific Journals be Classified in terms of Aggregated Journal-Journal Citation Relations using the Journal Citation Reports? CoRR abs/0911.3415 (2009) - [i22]Loet Leydesdorff, Stephen J. Bensman:
Classification and Powerlaws: The Logarithmic Transformation. CoRR abs/0911.3416 (2009) - [i21]Loet Leydesdorff, Liwen Qiu Vaughan:
Co-occurrence Matrices and their Applications in Information Science: Extending ACA to the Web Environment. CoRR abs/0911.3422 (2009) - [i20]Lutz Bornmann, Loet Leydesdorff, Peter van den Besselaar:
A Meta-evaluation of Scientific Research Proposals: Different Ways of Comparing Rejected to Awarded Applications. CoRR abs/0911.3558 (2009) - [i19]Robert L. Goldstone, Loet Leydesdorff:
The Import and Export of Cognitive Science. CoRR abs/0911.3641 (2009) - [i18]Iina Hellsten, Loet Leydesdorff, Paul Wouters:
Multiple Presents: How Search Engines Re-write the Past. CoRR abs/0911.3643 (2009) - [i17]Loet Leydesdorff:
Similarity Measures, Author Cocitation Analysis, and Information Theory. CoRR abs/0911.4292 (2009) - [i16]Diana Lucio-Arias, Loet Leydesdorff:
An Indicator of Research Front Activity: Measuring Intellectual Organization as Uncertainty Reduction in Document Sets. CoRR abs/0911.4302 (2009) - [i15]Loet Leydesdorff:
Giddens' "structuration," Luhmann's "self-organization," and the operationalization of the dynamics of meaning. CoRR abs/0911.5565 (2009) - [i14]Loet Leydesdorff:
Clusters and Maps of Science Journals Based on Bi-connected Graphs in the Journal Citation Reports. CoRR abs/0912.1221 (2009) - [i13]Loet Leydesdorff:
The university-industry knowledge relationship: Analyzing patents and the science base of technologies. CoRR abs/0912.1224 (2009) - [i12]Loet Leydesdorff, Jin Bihui:
Mapping the Chinese Science Citation Database. CoRR abs/0912.1227 (2009) - [i11]Koen Frenken, Loet Leydesdorff:
Scientometrics and the evaluation of European integration. CoRR abs/0912.1231 (2009) - [i10]Loet Leydesdorff, Janelle Ward:
Communication of Science Shop Mediation: A Kaleidoscope of University-Society Relations. CoRR abs/0912.1238 (2009) - [i9]Loet Leydesdorff:
The Construction and Globalization of the Knowledge Base in Inter-human Communication Systems. CoRR abs/0912.1357 (2009) - [i8]Loet Leydesdorff, Andrea Scharnhorst:
Measuring the Knowledge Base: A Program of Innovation Studies. CoRR abs/0912.1368 (2009) - [i7]Loet Leydesdorff:
The Mutual Information of University-Industry-Government Relations: An Indicator of the Triple Helix Dynamics. CoRR abs/0912.1369 (2009) - [i6]Loet Leydesdorff:
'Interaction' versus 'action' in Luhmann's sociology of communication. CoRR abs/0912.1370 (2009) - [i5]Caroline S. Wagner, Loet Leydesdorff:
A study of seismology as a dynamic, distributed area of scientific research. CoRR abs/0912.1371 (2009) - [i4]Loet Leydesdorff:
Communication and Knowledge: How is the knowledge base of an economy constructed? CoRR abs/0912.1372 (2009) - [i3]Loet Leydesdorff, Alkim Almila Akdag Salah:
Maps on the basis of the Arts & Humanities Citation Index: The journals Leonardo and Art Journal versus "Digital Humanities" as a topic. CoRR abs/0912.3098 (2009) - [i2]Ismael Ràfols, Alan L. Porter, Loet Leydesdorff:
Science overlay maps: a new tool for research policy and library management. CoRR abs/0912.3882 (2009) - 2008
- [i1]Ismael Ràfols, Loet Leydesdorff:
Content-based and Algorithmic Classifications of Journals: Perspectives on the Dynamics of Scientific Communication and Indexer Effects. CoRR abs/0812.4332 (2008)
Coauthor Index
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