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Loet Leydesdorff
 
 

Science & Technology Dynamics
Amsterdam School of Communication Research (ASCoR)
University of Amsterdam

 
<publication and citation profile at Google Scholar>

<click here for publications before 2006>
The Knowledge-Based Economy: Modeled, Measured, Simulated
* The first 25 pages
* Review in Science & Public Policy
* Review in Chinese

 The Self-Organization of
the Knowledge-Based Society
See review in JASIST 

 53(1), 62-63, 2002

 Second Edition 
(Internet)

 Second edition 
(pdf)

2014

Science Visualization and Discursive Knowledge; <pdf>, In: Blaise Cronin & Cassidy Sugimoto (Eds.), Beyond Bibliometrics: Harnessing Multidimensional Indicators of Scholarly Impact (pp. 167-185). Cambridge, MA: MIT Press, 2014.

Hyperincursive Cogitata and Incursive Cogitantes: Scholarly Discourse as a Strongly Anticipatory System, International Journal of Computing Anticipatory Systems (in press).

Loet Leydesdorff & Petra Ahrweiler, In Search of a Network Theory of Innovations: Relations, Positions, and Perspectives, Journal of the American Society for Information Science and Technology (in press).

Loet Leydesdorff and 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", Journal of the American Society for Information Science and Technology (in press)

Loet Leydesdorff, Lutz Bornmann, Werner Marx, and Staša Milojevič, Referenced Publication Years Spectroscopy applied to iMetrics: Scientometrics, Journal of Informetrics, and a relevant subset of JASIST , Journal of Informetrics 8(1) (2014) 162-174.

Loet Leydesdorff and Robert L. Goldstone, Interdisciplinarity at the Journal and Specialty Level: The changing knowledge bases of the journal Cognitive Science, Journal of the Association for Information Science and Technology 65(1) (2014) 164-177.

Loet Leydesdorff and Inga A. Ivanova, Mutual Redundancies in Inter-human Communication Systems: Steps Towards a Calculus of Processing Meaning, Journal of the Association for Information Science and Technology 65(2) (2014) 386-399.

Loet Leydesdorff, Inga Ivanova, and Mark Johnson, The Communication of Expectations and Individual Understanding: Redundancy as Reduction of Uncertainty, and the Processing of Meaning, Kybernetes 43(9/10) (2014), forthcoming.

Loet Leydesdorff, Duncan Kushnir, and Ismael Rafols, Interactive Overlay Maps for US Patent (USPTO) Data Based on International Patent Classifications (IPC). Scientometrics 98(3) (2014) 1583-1599; doi: 10.1007/s11192-012-0923-2 .

Loet Leydesdorff and Staša Milojevič, Scientometrics, in: Micheal Lynch (Editor), International Encyclopedia of Social and Behavioral Sciences, Section 8.5: Science and Technology Studies, Subsection 85030. Elsevier, 2015.

Loet Leydesdorff, Félix de Moya-Anegón, and 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, Journal of the Association of Information Science and Technology (in press).

Loet Leydesdorff, Félix de Moya-Anegón, and Vicente P. Guerrero-Bote, Journal Maps, Interactive Overlays, and the Measurement of Interdisciplinarity on the Basis of Scopus Data (1996-2012) [software], Journal of the Association of Information Science and Technology (in press).

Loet Leydesdorff and Han Woo Park, Can Synergy in Triple-Helix Relations Be Quantified? A Review of the Development of the Triple-Helix Indicator, Triple Helix: A Journal of University-Industry-Government Innovation and Entrepreneurship (in press).

Loet Leydesdorff, Han Woo Park, and Balazs Lengyel, A Routine for Measuring Synergy in University-Industry-Government Relations: Mutual Information as a Triple-Helix and Quadruple-Helix Indicator, Scientometrics 99(1) (2014) 27-35; doi: 10.1007/s11192-013-1079-4

Loet Leydesdorff, Han Woo Park, and Caroline Wagner, International Co-authorship Relations in the Social Science Citation Index: Is Internationalization Leading the Network? Journal of the Association of Information Science and Technology (in press).

Loet Leydesdorff, Evgeniy Perevodchikov, and Alexander Uvarov, Measuring Triple-Helix Synergy in the Russian Innovation Systems at Regional, Provincial and National Levels, Journal of the Association of Information Science and Technology (in press).

Loet Leydesdorff, Caroline S. Wagner, and 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, Journal of Informetrics 8(3) (2014) 606-617.

Loet Leydesdorff and Ping Zhou, Measuring the Knowledge-Based Economy of China in terms of Synergy among Technological, Organizational, and Geographic Attributes of Firms, Scientometrics 98(3) (2014) 1703-1719; doi: 10.1007/s11192-013-1179-1 .

Una Teoría Sociológica de la Comunicación, edited and translated by Gabriel Vélez Cuartas, Liliana Ramirez Ruiz, Javier Torres Nafarrate, et al. México: Universidad Iberoamerica (forthcoming in 2015).

Jonathan Adams, Karen Gurney, Daniel Hook, and Loet Leydesdorff, International collaboration clusters in Africa, Scientometrics 98(1) (2014) 547-556; doi: 10.1007/s11192-013-1060-2 .

Susanne Baumgartner and Loet Leydesdorff, Group-Based Trajectory Modeling of Citations in Scholarly Literature: Dynamic Qualities of "Transient" and "Sticky Knowledge Claims", Journal of the Association for Information Science and Technology 65(4) (2014) 797-811.

Lutz Bornmann & Loet Leydesdorff, Topical connections between institutions within an organisation (institutional co-authorships, direct citation links and co-citations). Scientometrics (in press).

Lutz Bornmann, Loet Leydesdorff, and Jian Wang, How to improve the prediction based on citation impact percentiles for years shortly after the publication date? Journal of Informetrics 8(1) (2014), 175-180.

Lutz Bornmann, Caroline S. Wagner, and Loet Leydesdorff, BRICS countries and scientific excellence: A bibliometric analysis of most frequently-cited papers , Journal of the Association for Information Science and Technology (in press).

Chaomei Chen & Loet Leydesdorff, Patterns of Connections and Movements in Dual-Map Overlays: A New Method of Publication Portfolio Analysis, Journal of the Association for Information Science and Technology 65(2) (2014) 334-351.

Mark Deakin and Loet Leydesdorff (2014), The Triple Helix Model of Smart Cities: a neo-evolutionary perspective, pp. 134-149 in: Mark Deakin (Ed.), Smart Cities: Governing, modelling and analysing the transition. London/New York: Routledge.

Inga A. Ivanova and Loet Leydesdorff, Redundancy Generation in University-Industry-Government Relations: The Triple Helix Modeled, Measured, and Simulated, Scientometrics 99(3) (2014) 927-948; doi: 10.1007/s11192-014-1241-7.

Inga A. Ivanova and Loet Leydesdorff, Rotational Symmetry and the Transformation of Innovation Systems in a Triple Helix of University-Industry-Government Relations. Technological Forecasting and Social Change 86 (2014) 143-156; http://dx.doi.org/10.1016/j.techfore.2013.08.022

Mark Johnson and Loet Leydesdorff, Beers Viable System Model and Luhmanns Communication Theory: Organizations from the Perspective of Metagames, Systems Research and Behavioral Science (in press).

Marcin Kozak, Lutz Bornmann, and Loet Leydesdorff, How have the Eastern European countries of the former Warsaw Pact developed since 1990? A bibliometric study, Scientometrics (in press).

Helen Lawton Smith and Loet Leydesdorff, The Triple Helix in the Context of Global Change: Dynamics and Challenges, Prometheus (in press).

Balazs Lengyel, Tamás Sebestyén, and Loet Leydesdorff, Challenges for regional innovation policies in CEE countries: spatial concentration and foreign control of US patenting , Science and Public Policy (in press); doi: 10.1093/scipol/sct087

Lin Z. Li, Loet Leydesdorff, Shoko Nioka, Nannan Sun and Eugene Garfield, Citation analysis of the scientific publications of Britton Chance in ISI citation indexes, Journal of Innovative Optical Health Sciences 8(2) (2014) 1430003 (14 pages); doi: 10.1142/S1793545814300031

Werner Marx, Lutz Bornmann, Andreas Barth, and Loet Leydesdorff, Detecting the historical roots of research fields by reference publication year spectroscopy (RPYS). Journal of the Association for Information Science and Technology 65(4) (2014) 751-764.

John Mingers and Loet Leydesdorff, Identifying Research Fields within Business and Management: A Journal Cross-Citation Analysis, Journal of the Operational Research Society (in press).

Daniele Rotolo and Loet Leydesdorff, Matching MEDLINE/PubMed Data with Web of Science (WoS): A Routine in R-language,  <software>, Journal of the Association for Information Science and Technology (in press).

Caroline Wagner and Loet Leydesdorff, The Growth of Global Science: Implications for Science Policy, Science and Public Policy (in press).

Fred Ye and Loet Leydesdorff, The "Academic Trace" of the Performance Matrix: A mathematical synthesis of the h-index and the Integrated Impact Indicator (I3), Journal of the Association for Information Science and Technology 65(4) (2014) 742-750.

Can Inter-human Communications be Modeled as Autopoietic? Open Peer Commentary to: Hugo Urrestarazu, “Social Autopoiesis?” Constructivist Foundations 9(2) (2014) 168-170.

Lutz Bornmann and Loet Leydesdorff, On the meaningful and non-meaningful use of reference sets in bibliometrics. Letter to the Editor of the Journal of Informetrics 8(1) (2014) 273-275. 

The Triple Helix, the complexity of technological innovations, and the decomposition of national innovation systems.” An interview with Loet Leydesdorff by Ruth Knoblich, in: Maximilian Mayer, Mariana Carpes, and Ruth Knoblich, The Global Politics of Science and Technology Volume I: Concepts from International Relations and Other Disciplines. Berlin: Springer, 2014 (forthcoming),

Han Woo Park, An interview with Loet Leydesdorff: the past, present, and future of the triple helix in the age of big data, Scientometrics 99(1) (2014) 199-202;  http://dx.doi.org/10.1007/s11192-013-1123-4.

Li Jie, Bibliometric analysis of Loet Leydesdorff`s publications, blog, 20 March 2014

De choreometrie van universiteit-industrie-overheidsrelaties: een dans rond de mousse-aux-trois-chocolats, in: Henk de Regt & Chunglin Kwa (Eds.), Building Bridges - Connecting Science, Technology and Philosophy. Amsterdam: VU University Press, 2014, pp. 85-88.

in preparation:
* Loet Leydesdorff, Floortje Alkemade, Gaston Heimeriks, and Rinke Hoekstra, Geographic and Technological Perspectives on "Photovoltaic Cells": Patents as Instruments for Exploring Innovation Dynamics
* Inga A. Ivanova and Loet Leydesdorff, Knowledge-Generating Efficiency in Innovation Systems: The Relation between Structural and Temporal Effects
* Balazs Lengyel and Loet Leydesdorff, Diverse Effects of Foreign Investments in the Regional Innovation Systems of Hungary: Synergy Measurement Based on Complexity Theory and Entropy Statistics
* Daniele Rotolo, Ismael Rafols, Michael Hopkins, and Loet  Leydesdorff, Scientometric Mapping as a Strategic Intelligence Tool for the Governance of Emerging Technologies ; <maps>


2013

Triple Helix of University-Industry-Government Relations, in: Elias G. Carayannis (Ed.), Encyclopedia of Creativity, Innovation, and Entrepreneurship, New York: Springer, 2013, pp. 1844-1851; with an additional note on N-Tuple of Helices, in: ibidem, pp. 1400-1402.

Statistics for the Dynamic Analysis of Scientometric Data: The evolution of the sciences in terms of trajectories and regimes, Scientometrics 96(3) (2013) 731-741; doi: 10.1007/s11192-012-0917-0.  <pdf>

Sociological and Communication-Theoretical Perspectives on the Commercialization of the Sciences, Science & Education 22(10) (2013) 2511-2527; doi: 10.1007/s11191-012-9458-4 <open access>.

An Evaluation of Impacts in "Nanoscience & nanotechnology:" Steps towards standards for citation analysis, Scientometrics 94(1) (2013) 35-55; <open access> .

Loet Leydesdorff, Stephen Carley, and Ismael Rafols, Global Maps of Science based on the new Web-of-Science Categories, Scientometrics 94(2) (2013) 589-593; <open access>  [software]

Loet Leydesdorff & Martin Meyer, A Reply to Etzkowitz' Comments to Leydesdorff & Martin (2010): Technology Transfer and the End of the Bayh-Dole Effect, Scientometrics 97(3) (2013), 927-934; doi: 10.1007/s11192-013-0997-5.

Loet Leydesdorff & Tobias Opthof, Citation Analysis using the Medline Database at the Web of Knowledge: Searching "Times Cited" with Medical Subject Headings (MESH), Journal of the American Society for Information Science and Technology 64(5) (2013), 1076-1080.

Loet Leydesdorff, Filippo Radicchi, Lutz Bornmann, Claudio Castellano, and Wouter de Nooy, Field-normalized Impact Factors: A Comparison of Rescaling versus Fractionally Counted IFs, Journal of the American Society for Information Science and Technology 64(11) (2013) 2299-2309. [Field-normalized impact factors are available from here.]

Loet Leydesdorff, Ismael Rafols, and Chaomei Chen, Interactive Overlays of Journals and the Measurement of Interdisciplinarity on the basis of Aggregated Journal-Journal Citations; Journal of the American Society for Information Science and Technology 64(12) (2013) 2573-2586; <software>

Loet Leydesdorff, Daniele Rotolo, and Wouter de Nooy, Innovation as a Nonlinear Process, the Scientometric Perspective, and the Specification of an "Innovation Opportunities Explorer.", Technology Analysis and Strategic Management 25(6) (2013) 641-653; http://dx.doi.org/10.1080/09537325.2013.801948 .

Loet Leydesdorff & Øivind Strand, The Swedish System of Innovation: Regional Synergies in a Knowledge-Based Economy, Journal of the American Society for Information Science and Technology 64(9) 1890-1902; DOI: 10.1002/asi.22895.

Loet Leydesdorff, Caroline S. Wagner, Han Woo Park, and Jonathan Adams, International Collaboration in Science: The Global Map and the Network, El Profesional de la Información 22(1) (2013) 87-94. [Spanish version available at http://www.elprofesionaldelainformacion.com/contenidos/2013/enero/07_esp.pdf ]

Loet Leydesdorff, Ping Zhou, and Lutz Bornmann, How can Journal Impact Factors be Normalized across Fields of Science? An Assessment in terms of Percentile Ranks and Fractional Counts, Journal of the American Society for Information Science and Technology 64(1) (2013) 96-107.

Does the specification of uncertainty hurt the progress of scientometrics? Journal of Informetrics 7(2) (2013) 292-293 [in reply to Schneider, 2012].

The revised SNIP indicator of Elsevier's Scopus, Letter to the Editor of the Journal of Informetrics 7(4) (2013) 859-860.

Niklas Luhmanns Magnificent Contribution to the Sociological Tradition: The Emergence of the Knowledge-Based Economy as an Order of Expectations, in: Nachtflug der Eule: 150 Stimmen zum Werk von Niklas Luhmann. Gedenkbuch zum 15. Todestag von Niklas Luhmann (8. Dezember 1927 Lüneburg - 6. November 1998 Oerlinghausen), Magdalena Tzaneva (Ed.). Berlin: LiDi Europe Verlagshaus, 2013.

Lutz Bornmann, Loet Leydesdorff, and 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), Journal of Informetrics 7(4) (2013), 933-944.

Lutz Bornmann & Loet Leydesdorff, Macro-indicators of citation impacts of six prolific countries: InCites data and the statistical significance of trends, PLoS ONE 8(2) (2013): e56768.; doi:10.1371/journal.pone.0056768.

Lutz Bornmann & Loet Leydesdorff, The validation of (advanced) bibliometric indicators through peer assessments: A comparative study using data from InCites and F1000, Journal of Informetrics 7(2) (2013) 286-291.

Lutz Bornmann & Loet Leydesdorff, Statistical Tests and Research Assessments: A comment on Schneider (2012), Journal of the American Society for Information Science and Technology 64(6) 1306-1308; <pdf>

Lutz Bornmann, Loet Leydesdorff & Rüdiger Mutz, The use of percentiles and percentile rank classes in the analysis of bibliometric data: opportunities and limits. Journal of Informetrics 7(1) (2013) 158-165.

Wilfred Dolfsma & Loet Leydesdorff, Patentkaart van Nederland in aantal en kwaliteit, ESB 98 (4652), 25 januari 2013, pp. 42-44.

Staša Milojević & Loet Leydesdorff, Information Metrics (iMetrics): A Research Specialty with a Socio-Cognitive Identity? Scientometrics 95(1) (2013) 141-157.

Han Woo Park and Loet Leydesdorff, Decomposing Social and Semantic Networks in Emerging “Big Data” Research, Journal of Informetrics 7(3) (2013) 756-766.

Øivind Strand and Loet Leydesdorff, Where may Synergy be Indicated in the Norwegian Innovation System? Triple-Helix Relations among Technology, Organization, and Geography, Technology Forecasting and Social Change 80(3) (2013) 471-484; available at http://dx.doi.org/10.1016/j.techfore.2012.08.010

Bas van Heur, Loet Leydesdorff, and Sally Wyatt, Turning to Ontology in STS? Turning to STS through 'Ontology'. Social Studies of Science 43(3) (2013) 341-362.

Michelina Venditti, Emanuela Reale, & Loet Leydesdorff, The Disclosure of University Research for Societal Demand: A Non-Market Perspective on the “Third Mission” Science & Public Policy 40(6) (2013) 792-800; http://www.leydesdorff.net/pescara-chieti/

Erjia Yan, Ying Ding, Blaise Cronin, and Loet Leydesdorff, A bird’s-eye view of scientific trading: Dependency relations among fields of science, Journal of Informetrics 7(2) (2013) 249-264.

Fred Y. Ye, Susan S. Yu, and Loet Leydesdorff, The Triple Helix of University-Industry-Government Relations at the Country Level, and Its Dynamic Evolution under the Pressures of Globalization, Journal of the American Society for Information Science and Technology 64(11) (2013), 2317-2325.

ИНСТИТУЦИОНАЛЬНОЕ МОДЕЛИРОВАНИЕ ИННОВАЦИОННОГО РАЗВИТИЯ: ОТ ТРОЙНОЙ К N-СПИРАЛЯМ, translated by Marina Leonova;  Conference "Marketing and Society," Kazan, 2013, pp. 97-99.

Le relazioni tra università, aziende e pubblica amministrazione nella regione Abruzzo e lo sviluppo de una knowledge-based economy. Pp. 15-21 in: Sviluppo nella globalizatione o... povertà. UnionCamere Abruzzo, Teramo. [English original; translated by Emilia Ferone.]


2012

Radical Constructivism and Radical Constructedness: Luhmann's Sociology of Semantics, Organizations, and Self-Organization, Constructivist Foundations 8(1) (2012) 85-92 [with discussion section and author's responses on pp 93-102: Kate Distin, Symbolically Generalized Communication Media: A Category Mistake?; Roger Harnden, Some Reflections on Meaning, pp. 95-97; Author's Response: The Continuous Reconstruction of a Pluralistic Society as an Order of Expectations, pp. 97-99; bibliography: pp. 100-102.]

Alternatives to the Journal Impact Factor: I3 and the Top-10% (or Top-25%?) of the Most-Highly Cited Papers, Scientometrics 92(2) (2012) 355-365; doi: 10.1007/s11192-012-0660-6 <printed version>

The Triple Helix, Quadruple Helix, ..., and an N-tuple of Helices: Explanatory Models for Analyzing the Knowledge-based Economy, Journal of the Knowledge Economy 3(1) (2012) 25-35; doi: 10.1007/s13132-011-0049-4); <printed version>

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, El Profesional de la Información 21(1) (2012), 43-49;   Comparación y Predicción de las Cuotas Mundiales de Publicación de los EUA, EU-27 y China usando la nueva Interfáz Web of Science versus Scopus [versión en español]

McCall's Area Transformation versus the Integrated Impact Indicator (I3), Journal of Informetrics 6(4) (2012) 513-514.

Accounting for the Uncertainty in the Evaluation of Percentile Ranks, Journal of the American Society for Information Science and Technology 63(11) (2012) 2349-2350. [software]

"Scientometrics [Elm-sanji]". Translated into Persian by Mahsa Nikzad. pp. 3-13, in Khabarnameye Elm-sanji [Scientometrics Newsletter]. No. 6. Tehran: Iranian Research Institute for Information Science and Technology; <http://irandoc.ac.ir/info-science/smetrics-nl.html>

Loet Leydesdorff and Lutz Bornmann, Mapping (USPTO) Patent Data using Overlays to Google Maps, Journal of the American Society for Information Science and Technology 63(7) (2012) 1442-1458. [software]

Loet Leydesdorff and Lutz Bornmann, Testing Differences Statistically with the Leiden Ranking, Scientometrics 92(3) (2012), 781-783; doi: 10.1007/s11192-012-0636-6 <printed version>

Loet Leydesdorff and Lutz Bornmann, Percentile Ranks and the Integrated Impact Indicator (I3), Journal of the American Society for Information Science and Technology 63(9) (2012), 1901-1902..

Loet Leydesdorff and Lutz Bornmann, The Integrated Impact Indicator (I3), the top-10% Excellence Indicator, and the use of non-parametric statistics, Research Trends, Issue 29, July 2012.

Loet Leydesdorff and Ulrike Felt, Edited Volumes, Monographs, and Book Chapters in the Book Citation Index (BCI) and Science Citation Index (SCI, SoSCI, A&HCI), Journal of Scientometric Research 1(1) (2012) 28-34.

Loet Leydesdorff & Tobias Opthof, A Rejoinder on Energy versus Impact Indicators, Scientometrics 90(2) (2012), 745-748; doi: 10.1007/s11192-011-0502-y.

Loet Leydesdorff & Ismael Rafols, Interactive Overlays: A New Method for Generating Global Journal Maps from Web-of-Science Data, Journal of Informetrics 6(3) (2012), 318-332. [software]

Loet Leydesdorff, Daniele Rotolo, and Ismael Rafols, Bibliometric Perspectives on Medical Innovation using the Medical Subject Headings (MeSH) of PubMed, Journal of the American Society for Information Science and Technology 63(11) (2012) 2239-2253. [software]

Alireza Abbasi, Liaquat Hossain, and Loet Leydesdorff, Betweenness Centrality as a Driver of Preferential Attachment in the Evolution of Research Collaboration Networks, Journal of Informetrics 6(3), (2012) 403-412.

Lutz Bornmann and Loet Leydesdorff, Which cities' paper output and citation impact are above expectation in information science? Some improvements of our previous mapping approaches, Journal of Informetrics 6(2) (2012) 336-345.

Lutz Bornmann, Felix de Moya-Anegón, and Loet Leydesdorff, The new excellence indicator in the World Report of the SCImago Institutions Rankings 2011. Journal of Informetrics 6(3) (2012) 333-335.

Lutz Bornmann, Loet Leydesdorff, and Günter Krampen, Which are the best cities for psychology research worldwide? A map visualizing city ratios of observed and expected numbers of highly-cited papers. European Journal of Psychology 8(4), (2012)535-546, doi: 10.5964/ejop.v8i4.482. <open access>

Gaston Heimeriks and Loet Leydesdorff, Emerging Search Regimes: Measuring Co-evolutions among Research, Science, and Society, Technology Analysis and Strategic Management 24(1) (2012) 51-67.

Ki-Seok Kwon, Han Woo Park, Minho So, and 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) (2012) 163-176; doi: 10.1007/s11192-11011-10512-11199.

Gangan Prathap and Loet Leydesdorff, The world of science according to performance indicators based on percentile ranking normalization, Journal of Scientometric Research  1(1) (2012) 53-59. 

Ismael Rafols, Loet Leydesdorff, Alice O'Hare, Paul Nightingale, & Andy Stirling, How journal rankings can suppress interdisciplinary research. A comparison between innovation studies and business & management, Research Policy 41(7) (2012), 1262-1282.

Alkim Almila Akdag Salah & Loet Leydesdorff, The Development of the Journal Environment of Leonardo, Leonardo 45(1) (2012), 88-89.

Robert D. Shelton and Loet Leydesdorff, Publish or Patent: Bibliometric evidence for empirical trade-offs in national funding strategies, Journal of the American Society for Information Science and Technology 63(3) (2012), 498-511.
 
Vlieger, Esther, and Loet Leydesdorff, Visualization and Analysis of Frames in Collections of Messages: Content Analysis and the Measurement of Meaning, in: Manuel Mora, Ovsei Gelman, Annette Steenkamp, and Maresh S. Raisinghani (Eds.), Research Methodologies, Innovations and Philosophies in Systems Engineering and Information Systems, Hershey PA: Information Science Reference, 2012, pp. 321-339, doi: 10.4018/978-1-4666-0179-6.ch16.

Caroline Wagner and Loet Leydesdorff, An Integrated Impact Indicator (I3): A new definition of "impact" with policy relevance, Research Evaluation 21(3), 183-188.

Loet Leydesdorff & Øivind Strand, Triple-Helix Relations and Potential Synergies Among Technologies, Industries, and Regions in Norway, Procedia - Social and Behavioral Sciences 52 (2012) 1-4.

Is Communication Emerging or Sui Generis? Construvist Foundations, 8(1) (2012), 111-112 [Commentary to Manfred Füllsack, Communication Emerging? pp. 103-110.]

2011

"Meaning" as a sociological concept: A review of the modeling, mapping, and simulation of the communication of knowledge and meaning, Social Science Information 50(3-4) (2011) 391-413; <pdf-version>

De Ontwikkeling van Kennis in Wetenschappelijke Communicatie: Onzekerheid en Codificatie in Anticipatorische Systemen [The development of knowledge in scholarly discourse: Uncertainty and codification in anticipatory systems], Inaugural lecture (in Dutch), June 30, 2011.

"Structuration" by Intellectual Organization: The Configuration of Knowledge in Relations among Scientific Texts, Scientometrics 88(2) (2011) 499-520.

Bibliometrics/Citation networks, in: George A. Barnett (Ed.), The Encyclopedia of Social Networks, Sage, 2011, Vol. I, pp. 72-74.

Датэрміновае сістэмы і апрацоўкі сэнсу, [Anticipatory Systems and the Processing of Meaning: A Simulation Inspired by Luhmann's Theory of Social Systems. Journal of Artificial Societies and Social Simulation, Vol. 8, No. 2 (2005) Paper 7; translated into Belorussian by Martha Ruszkowski and W.H. Geeks.

Este societatea un sistem de auto-organizare? [Is Society a Self-Organizing System? Journal for Social and Evolutionary Systems 16 (1993) 331-349; translated into Rumanian by Alexander Ovsov].

Loet Leydesdorff & Lutz Bornmann, Integrated Impact Indicators (I3) compared with Impact Factors (IFs): An alternative design with policy implications. Journal of the American Society for Information Science and Technology, 62(11) 2133-2146.

Loet Leydesdorff & Lutz Bornmann, How fractional counting affects the Impact Factor: Normalization in terms of differences in citation potentials among fields of science, Journal of the American Society for Information Science and Technology 62(2) 217-229; <pdf-version>

Loet Leydesdorff, Lutz Bornmann, Rüdiger Mutz, and Tobias Opthof, Turning the Tables of Citation Analysis One More Time: Principles for comparing sets of documents, Journal of the American Society for Information Science and Technology 63(7) (2011) 1370-1381.

Loet Leydesdorff & Mark Deakin, The Triple Helix Model and the Meta-Stabilization of Urban Technologies in Smart Cities, Journal of Urban Technology 18(2) (2011) 53-63; <pdf-version>

Loet Leydesdorff, Björn Hammarfelt, and Alkim Almila Akdag Salah, The structure of the Arts & Humanities Citation Index: A mapping on the basis of aggregated citations among 1,157 journals Journal of the American Society for Information Science and Technology 62(12) (2011) 2414-2426.

Loet Leydesdorff & Tobias Opthof, Scopus' SNIP Indicator: Reply to Moed, Journal of the American Society for Information Science and Technology 62(1) (2011), 214-215.

Loet Leydesdorff & Tobias Opthof, Remaining problems with the “New Crown Indicator” (MNCS) of the CWTS, Letter to the Editor, Journal of Informetrics 5 (2011) 224-225; <pdf version>

Loet Leydesdorff & Ismael Rafols, Indicators of the Interdisciplinarity of Journals: Diversity, Centrality, and Citations, Journal of Informetrics 5(1) (2011) 87-100; <pdf version>

Loet Leydesdorff & Ismael Rafols, How do emerging technologies conquer the world? An exploration of patterns of diffusion and network formation, Journal of the American Society for Information Science and Technology 62(5) (2011) 846-860; <pdf-version>
 
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, Journal of the American Society for Information Science and Technology, 62(6) (2011) 1146-1155; <pdf version>

Loet Leydesdorff & Esther, Visualizing Meaning: Steps towards Visualization of the Communication of Meaning, SemiotiX  XN-5 (2011).

Loet Leydesdorff & Kasper Welbers, The semantic mapping of words and co-words in contexts, Journal of Informetrics 5(3) (2011), 469-475; <pdf-version>

Lutz Bornmann and Loet Leydesdorff, Which cities produce worldwide excellent papers more than expected? A new mapping approachusing Google Mapsbased on statistical significance testing. Journal of the American Society for Information Science and Technology 62(10) (2011) 1954-1962; [software & manual]

Lutz Bornmann, Loet Leydesdorff, Christiane Walch-Solimena, and Christoph Ettl, Mapping excellence in the geography of the sciences: An approach made possible by using Scopus data, Journal of Informetrics, 5(4), 537-546; [software and  manual]

Wilfred Dolfsma & Loet Leydesdorff, Innovation Systems as Patent Networks: The Netherlands, India and Nanotech, Innovation-Management, Policy & Practice 13(3) (2011) 311-326.

Balázs Lengyel & Loet Leydesdorff, Regional Innovation Systems in Hungary: The Failing Synergy at the National Level, Regional Studies 45(5) (2011), 677-693; <pdf-version>

Tobias Opthof and Loet Leydesdorff, Citation analysis cannot legitimate the strategic selection of excellence. [A comment to the paper by Waltman et al., Scientometrics, 87, 467-481], Scientometrics  88(3) (2011) 1011-1016.

Ronald Rousseau and Loet Leydesdorff, Non-consistency, non-cited items, and the impact factor: A consequence of the arithmetic, ISSI Newsletter 7(1) 10-14; pdf-version

SHI Aolan and Loet Leydesdorff, What do Cited and Citing Environments Reveal about Advances in Atmospheric Physics? Advances in Atmospheric Physics, 28(1), 2011, 238-244.

Esther Vlieger & Loet Leydesdorff, Content Analysis and the Measurement of Meaning: The Visualization of Frames of Collections of Messages, The Public Journal of Semiotics 3(1) (2011) 28-50.

Zhou, Ping & Loet Leydesdorff, Fractional counting of citations in research evaluation: A cross- and interdisciplinary assessment of the Tsinghua University in Beijing, Journal of Informetrics 5(3) (2011) 360-368..

Book review:  Matthias Gross, Ignorance and Surprise: Science, Society, and Ecological Design. Cambridge, MA: MIT Press, 2010; US$ 30; American Journal of Sociology 116(6) (2011) 2022-2024.

Book review:  Katy Börner, Atlas of Science: Visualizing What We Know. Cambridge, MA/ London UK: The MIT Press, 2010; US$ 20; Scientometrics 88(2) (2011) 675-677.

Manfred Bonitz and the Matthew Effect: Quantitative Content Analysis of Citation Contexts, ISSI Newsletter Vol. 25-S, March 2011.

When can the cross-over between China and the USA be expected using Scopus data? Research Trends, Issue 25, November 2011.


2010

Communicative Competencies and the Structuration of Expectations: The creative tension between Habermas’ critical theory and Luhmann’s social systems theory, Complicity 7(2) (2010) 66-76; <pdf version>
 
Eugene Garfield and Algorithmic Historiography: Co-Words, Co-Authors, and Journal Names, Annals of Library and Information Studies 57(3) (2010) 248-260; <pdf-version>

The Communication of Meaning and the Structuration of Expectations: Giddens' "structuration theory" and Luhmann's "self-organization," Journal of the American Society for Information Science and Technology 61(10) (2010) 2138-2150; <pdf-version>

Redundancy in Systems which Entertain a Model of Themselves: Interaction Information and the Self-Organization of Anticipation, Entropy 12(1) (2010) 63-79; <pdf>

Luhmann Reconsidered: Steps towards an empirical research program in the sociology of communication, in: Colin Grant (ed.), Beyond Universal Pragmatics: Essays in the Philosophy of Communication. Oxford: Peter Lang, pp. 149-173. <pdf-version>

Loet Leydesdorff & Alkim Almila Akdag Salah, Maps on the basis of the Arts &Humanities Citation Index: the journals Leonardo and Art Journal, and "Digital Humanities" as a topic, Journal of the American Society for Information Science and Technology 61(4) (2010) 787-801, <pdf-version>

The Knowledge-Based Economy and the Triple Helix Model, Annual Review of Information Science and Technology, Blaise Cronin (Ed.); 44 (2010) 367-417; <pdf-version>

Loet Leydesdorff & Tobas Opthof, Scopus’s Source Normalized Impact per Paper (SNIP) versus a Journal Impact Factor based on Fractional Counting of Citations, Journal of the American Society for Information Science & Technology 61(11) (2010) 2365-2396; DOI: 10.1002/asi.21371); <pdf-version>; Scopus' SNIP Indicator (Rejoinder), Journal of the American Society for Information Science & Technology (in print).

Loet Leydesdorff,  Félix de Moya-Anegón, and Vicente P. Guerrero-Bote,  Journal Maps on the  Basis of Scopus Data: A  Comparison with the  Journal Citation Reports of the ISI. Journal of the American Society for Information Science and Technology, 61(2) (2010) 352-369; DOI: 10.1002/asi.21250; <pdf-version>.

Loet Leydesdorff & Olle Persson, Mapping the Geography of Science: Distribution Patterns and Networks of Relations among Cities and Institutes, Journal of the American Society for Information Science & Technology 61(8) (2010) 1622-1634; <pdf-version> <software and manual>

Loet Leydesdorff & Martin Meyer, The Decline of University Patenting and the End of the Bayh-Dole Effect, Scientometrics 83(2) (2010) 355-362; <pdf-version>

Loet Leydesdorff & Martin Meyer, 东北大学学报(社会科学版)[The Triple Helix Model and the Knowledge-Based Economy,] Journal of Northeastern University (Social Science),  12(1), 2010, 11-18.

Loet Leydesdorff & Girma Zawdie, The Triple Helix Perspective of Innovation Systems, Technology Analysis & Strategic Management 22(7) (2010) 789-804; <pdf-version>

"What Can Heterogeneity Add to the Scientometric Map? Steps towards algorithmic historiography". Pp. 283-289 in: Débordements: Mélanges offerts à Michel Callon, Madeleine Akrich, Yannick Barthe, Fabian Muniesa, and Philip Mustar (Eds.). Paris: École Nationale Supérieure des Mines, Presses des Mines, 2010; <pdf-version>

The Emergence of Nanotechnology”, Places & Spaces: Mapping Science Exhibit; launched at Nov 16-17, Royal Society Global Science Report Launch Conference, Kavli Royal Society International Center, London, England (David Stilgoe and Katy Börner); online at http://scimaps.org/maps/map/the_emergence_of_nan_121/

Lutz Bornmann, Felix de Moya-Anegón, & Loet Leydesdorff, Do Scientific Advancements Lean on the Shoulders of Giants? A Bibliometric Investigation of the Ortega Hypothesis. PLoS ONE 5(10) (2010) e13327. (See also: Zoe Corbyn, "To be the best, cite the best", Nature, 13 October 2010; at http://www.nature.com/news/2010/101013/full/news.2010.539.html.)

Lutz Bornmann, Loet Leydesdorff, & Peter van den Besselaar, A Meta-evaluation of Scientific Research Proposals: Different Ways of Comparing Rejected to Awarded Applications. Journal of Informetrics 4(3) (2010) 211-220; <pdf-version>

Wilfred Dolfsma & Loet Leydesdorff, The Citation Field of Evolutionary Economics, Journal of Evolutionary Economics 20(5) (2010), 645-664..

Iina Hellsten, James Dawson, & Loet Leydesdorff, Implicit Media Frames: Automated analysis of public debate on artificial sweeteners, Public Understanding of Science 19(5) (2010) 590-608; <pdf-version>

Willem Halffman & Loet Leydesdorff, Is Inequality among Universities Increasing? Gini Coefficients and the Elusive Rise of Elite Universities, Minerva 48(1) (2010) 55-72; <pdf-version>

Tobias Opthof & Loet Leydesdorff, Caveats for the journal and field normalizations in the CWTS ("Leiden") evaluations of research performance, Journal of Informetrics 4(3) (2010) 423-430; <pdf-version>

Loet Leydesdorff & Tobias Opthof, Normalization at the field level: fractional counting of citations (Rejoinder), Journal of Informetrics 4(4) (2010) 644-646.

Han Park & Loet Leydesdorff, Longitudinal Trends in Networks of University-Industry-Government Relations in South Korea: The Role of Programmatic Incentives, Research Policy 39(5) 640-649; <pdf-version>.

Ismael Rafols, Alan Porter & Loet Leydesdorff, Science overlay maps: a new tool for research policy and library management, Journal of the American Society for Information Science & Technology 61(9) (2010) 1871-1887; <pdf-version> <software and manual>.

Ping Zhou, Xinning Su & Loet Leydesdorff, A comparative study on communication structures of Chinese journals in the social sciences, Journal of the American Society for Information Science & Technology 61(7) 1360-1376.

Loet Leydesdorff, Wilfred Dolfsma, & Gerben van der Panne, Measuring the knowledge base of an economy in terms of triple-helix relations, in: Ricardo Viale and Henry Etzkowitz (eds.), The Capitalization of Knowledge. Cheltenham, UK/ Northampton, MA: Edward Elgar, pp. 291-311.

Journals, in: David H. Guston, Encyclopedia of Nanoscience and Society. London: Sage, 2010; pp. 380f. <pdf-version>

2009

How are new citation-based journal indicators adding to the bibliometric toolbox?, Journal of the American Society for Information Science and Technology 60(7) (2009) 1327-1336; <pdf-version>

The Non-linear dynamics of meaning-processing in social systems, Social Science Information, 48(1) (2009) 5-33. <pdf-version>

Interaction Information: Linear and Nonlinear Interpretations, Intern. Journal of General Systems 38(6) (2009) 681-685.

Loet Leydesdorff & Caroline Wagner, Macro-level Indicators of the Relations between Research Funding and Research Output; Journal of Informetrics 3(4) (2009), 353-362, http://dx.doi.org/10.1016/j.joi.2009.05.005; <pdf-version>

Loet Leydesdorff & Sander Franse, The communication of meaning in social systems, Systems Research and Behavioral Science 26(1) (2009) 109-117; <pdf-version>

Loet Leydesdorff & Carole Probst, The delineation of an interdisciplinary specialty in terms of a journal set: the case of Communication Studies, Journal of the American Society for Information Science and Technology 60(8) (2009) 1709-1718; <pdf-version>

Loet Leydesdorff & Yuan Sun, National and International Dimensions of the Triple Helix in Japan: University-Industry-Government versus International Co-Authorship Relations, Journal of the American Society for Information Science and Technology 60(4) (2009) 778-788; <pdf-version>

Loet Leydesdorff & Ismael Rafols, A Global Map of Science Based on the ISI Subject Categories, Journal of the American Society for Information Science and Technology 60(2) (2009) 348-362; <pdf-version>; <interactive maps of science> <map of science kit for overlays>

Loet Leydesdorff & Caroline Wagner, Is the United States losing ground in science?  A global perspective on the world science system (updated for 2006), Scientometrics 78(1) (2009) 23-36. <pdf-version>

Diana Lucio-Arias & Loet Leydesdorff, An Indicator of Research Front Activity: Measuring Intellectual Organization as Uncertainty Reduction in Document Sets, Journal of the American Society for Information Science & Technology 60(12) (2009) 2488-2498; <pdf-version> <software>.

Ricardo Arencibia-Jorge, Loet Leydesdorff , Zaida Chinchilla-Rodríguez, Ronald Rousseau, and Soren W. Paris, Retrieval of very large numbers of items in the Web of Science: an exercise to develop accurate search strategies. El Profesional de la Información 18(5) (2009) 555-559.

Peter van den Besselaar & Loet Leydesdorff,  Past  Performance, Peer Review and Project Selection in the Social Sciences, Research Evaluation 18(4) (2009) 273-288; <pdf-version>

Diana Lucio-Arias & Loet Leydesdorff, The Dynamics of Exchanges and References among Scientific Texts, and the Autopoiesis of Discursive Knowledge, Journal of Informetrics 3(3) (2009) 261-271; <pdf-version>

Wilfred Dolfsma & Loet Leydesdorff, Lock-In and Break-Out from Technological Trajectories: Modeling and Policy Implications, Technological Forecasting and Social Change 76(7) (2009) 932-941; http://dx.doi.org/10.1016/j.techfore.2009.02.004; <pdf-version>

Ismael Rafols & Loet Leydesdorff, Content-based and Algorithmic Classifications of Journals: Perspectives on the Dynamics of Scientific Communication and Indexer Effects, Journal of the American Society for Information Science and Technology 60(9) (2009) 1823-1835; <pdf-version>

Leo Egghe & Loet Leydesdorff, The relation between Pearson's correlation coefficient r and Salton's cosine measure, Journal of the American Society for Information Science and Technology 60(5) (2009) 1027-1036. <pdf-version>

Steven Bensman & Loet Leydesdorff, Definition and Identification of Journals as Bibliographic and Subject Entities: Librarianship vs. ISI Journal Citation Reports (JCR) Methods and Their Effect on Citation Measures,  Journal of the American Society for Information Science and Technology 60(6) (2009) 1097-1117.

Ping Zhou & Loet Leydesdorff, Chemistry in China -- a bibliometric view, Chemistry Today 27(6) (2009) 18-22.

Han Park & Loet Leydesdorff, Knowledge linking structures in communication studies using citation analysis among communication journals, Scientometrics 81(1) (2009) 157-175, <pdf-version>

Loet Leydesdorff & Wilfred Dolfsma, Van onderzoeksinput naar -output, Economisch Statistische Berichten ESB 94(4564), 10 juli 2009, pp. 426-427.

Wilfred Dolfsma & Loet Leydesdorff, Economie en bedrijfskunde evalueren, Economisch Statistische Berichten ESB 94(4559), 1 mei 2009, pp. 280-282.

2008

Configurational Information as Potentially Negative Entropy: The Triple Helix Model, Entropy 10(4), 391-420, 2008; <pdf-version>

The Communication of Meaning and Knowledge in a Knowledge-Based Economy, Guest Column, SemiotiX nr. 13, at http://www.semioticon.com/semiotix/semiotix13/sem-13-02.html

Loet Leydesdorff, Thomas Schank, Andrea Scharnhorst, & Wouter De Nooy, Animating the development of Social Networks over time using a dynamic extension of multidimensional scaling. El Profesional de la Información 17(6) (2008) 611-626.

Loet Leydesdorff & Thomas Schank, Dynamic Animations of Journal Maps: Indicators of Structural Change and Interdisciplinary Developments, Journal of the American Society for Information Science and Technology 59(11), 1810-1818, 2008. <pdf-version>; <software>

Loet Leydesdorff & Caroline Wagner, International collaboration in science and the formation of a core group, Journal of Informetrics 2(4) (2008) 317-325 <pdf-version> <http://dx.doi.org/10.1016/j.joi.2008.07.003>

Patent Classifications as Indicators of Intellectual Organization, Journal of the American Society for Information Science and Technology 59(10), 1582-1597, 2008; <pdf-version>

Caveats for the Use of Citation Indicators in Research and Journal Evaluations, Journal of the American Society for Information Science and Technology 59(2), 278-287, 2008.  <pdf-version>

Measuring Research Output with Science & Technology Indicators, Scirus Topics Page, June 4, 2008.
 
The delineation of nanoscience and nanotechnology in terms of journals and patents: a most recent update. Scientometrics 76(1), 159-167, 2008. <pdf-version>

On the Normalization and Visualization of Author Co-citation Data: Salton's cosine versus the Jaccard Index, Journal of the American Society for Information Science and Technology, 59(1) , 77-85, 2008. <pdf-version>

The Communication of Meaning in Anticipatory Systems: A Simulation Study of the Dynamics of Intentionality in Social Interactions, Vice-Presidential Address at the 8th Int. Conference of Computing Anticipatory Systems (CASYS07), Liège, Belgium, 6-11 August 2007. In: D. M. Dubois (Ed.) Proceedings of the 8th Intern. Conf. on Computing Anticipatory Systems CASYS'07. Melville, NY: American Institute of Physics Conference Proceedings, Vol. 1051 (2008) pp. 33-49. <pdf-version>

Complexity science and intentional systems, Educational Research Review 3(1) (2008) 92-93. <pdf-version>

5 Questions concerning Bibliometrics, Library Connect Newsletter, 6(4) (2008), pp. 8-9.

Loet Leydesdorff & Ping Zhou, Co-Word Analysis using the Chinese Character Set, Journal of the American Society for Information Science and Technology 59(9), 1528-1530, 2008; <pdf-version>; <software>

Loet Leydesdorff, Robert L. Goldstone, & Thomas Schank, Betweenness Centrality and the Interdisciplinarity of Cognitive Science, at the webpage of Cognitive Science: A Multidisicplinary Journal, <animation>.

Diana Lucio-Arias & Loet Leydesdorff, Main-path analysis and path-dependent transitions in HistCite™-based historiograms, Journal of the American Society for Information Science and Technology 59(12), 1948-1962, 2008 <pdf-version>; <software>

Wilfred Dolfsma & Loet Leydesdorff, “Medium-tech” industries may be of greater importance to a local economy than “High-tech” firms: New methods for measuring the knowledge base of an economic system, Medical Hypotheses, 71(3) (2008) 330-334; <pdf-version>.

Lengyel, Balázs & Loet Leydesdorff, A magyar gazdaság tudás-alapú szerveződésének mérése: az innovációs rendszerek szinergiáinak térbelisége, Közgazdasági Szemle [Economic Review], LV. évf., 2008. június (522–547. o.); <pdf-version>

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) (2008) 439-462; <pdf-version>

Zhou, Ping & Loet Leydesdorff, China Ranks Second in Scientific Publications since 2006, ISSI Newletter, Nr. 13, March 2008, pp. 7-9.

Zhou, Ping & Loet Leydesdorff, A Comparative Analysis of Chinese and International Journal-Journal Relations, in: Greater China's Quest for Innovation, in: Henry Rowen, Marguerite Gong Hancock, and William Miller (Eds.), Stanford, CA: Shorenstein Asian Pacific Center, Brookings Institution Press, 2008, pp. 269-279..

Complexity and Technology, in: Theme section KM 1.29- Knowledge Management, Organizational Intelligence and Learning, and Complexity, L. Douglas Kiel (Ed.), Vol. 2, pp. 42-58. Encyclopedia of Life Support Systems (EOLSS). Oxford, UK: Eolss Publishers, 2007; <pdf-version>.

Wilfred Dolfsma & Loet Leydesdorff, Journals as Constituents of Scientific Discourse: Economic Heterodoxy, On the Horizon 16(4), 214-225, 2008; <pdf-version>

Wilfred Dolfsma & Loet Leydesdorff, Het Nederlandse Innovatiesysteem, ESB, 4 april 2008, pp. 214-215.

2007

Scientific Communication and Cognitive Codification: Social Systems Theory and the Sociology of Scientific Knowledge, European Journal of Social Theory 10(3), 375-388, 2007; <pdf-version>

A kommunikáció szociológiai elmélete: Társadalmi kommunikáció sorozat (translated by Jakab András). Budapest: Typotext, 2007. ISBN: 963 9548 54 5.

Include Citations When Ranking Institutions and Scholars, Communications of the ACM, 50 (9), 14, 2007.

The Generation and Communication of Meaning in Social Systems, Visualizing Network Dynamics Competition, At NetSci07, New York Hall of Science, Queens, NY, May 20th-25th, 2007.

Luhmann's Communication-Theoretical Specification of the 'Genomena' of Husserl's Phenomenology, pp. 233-243 in: Edmundo Balsemão Pires (Ed.), Public Space, Power and Communication, Coimbra:  Edições Afrontamento, 2007. <pdf-version>

„Während auf hoher See ein Sturm tobt...“: Innovationssysteme, regionale Entwicklung und wissensbasierte Ökonomie aus der Perspektive des Triple-Helix-Modells. In: Hanno Pahl und Lars Meier (Hrsg.), Kognitiver Kapitalismus. Marburg: Metropolis Verlag, pp. 163-193.

The position of Tibor Braun’s Œuvre: Bibliographic Journal Coupling. In: The Multidimensional World of Tibor Braun, at the occasion of his 75th birthday, Wolfgang Glänzel, András Schubert, Balázs Schlemmer (Eds.) (Leuven: Steunpunt O&O, KU. )

Should Co-occurrence Data be Normalized? A Rejoinder to: Waltman, L., Van Eck, N. J. (2007). Some comments on the question whether co-occurrence data should be normalized. Journal of the American Society for Information Science and Technology 58(14), 2411-2413, 2007.

"Betweenness Centrality" as an Indicator of the "Interdisciplinarity" of Scientific Journals, Journal of the American Society for Information Science and Technology 58(9), 1303-1309, 2007. <pdf-version>

Mapping Interdisciplinarity at the Interfaces between the Science Citation Index and the Social Science Citation Index, Scientometrics 71(3), 391-405, 2007; <pdf-version>

Loet Leydesdorff & Ping Zhou, Nanotechnology as a Field of Science: Its Delineation in Terms of Journals and Patents. Scientometrics, 70(3), 693-713, 2007 <pdf-version

Diana Lucio-Arias and Loet Leydesdorff, Knowledge Emergence in Scientific Communication: From “Fullerenes” to “Nanotubes", Scientometrics, 70(3), 603-632, 2007.

Loet Leydesdorff and Martin Meyer, The Scientometrics of a Triple Helix of University-Industry-Government Relations (Introduction to the Topical Issue), Scientometrics, 70(2), 207-222, 2007.  <pdf-version>

Visualization of the Citation Impact Environments of Scientific Journals: An online mapping exercise, Journal of the American Society for Information Science and Technology 58(1), 25-38, 2007 . <pdf-version>

Environment and Planning B: Planning and Design as a Journal: The interdisiplinarity of its environment and the citation impact, Environment and Planning B 34(5), 826-838, 2007; <pdf-version>

Peter van den Besselaar & Loet Leydesdorff, Past Performance as Predictor of Successful Grant Applications: A Case Study. The Hague: Rathenau Institute, SciSA Report 0706.

Lutz Bornmann, Loet Leydesdorff, and Werner Marx, Citation Environment of Angewandte Chemie, CHIMIA 61(3), 104-109, 2007. <pdf>

Zhou, Ping & 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. Journal of the American Society for Information Science and Technology 58(2), 223-236, 2007; <pdf-version>

Zhou, Ping & Loet Leydesdorff, The Citation Impacts and Citation Environments of Chinese Journals in Mathematics, Scientometrics 72(2), 185-200, 2007. <pdf-version>

Zhou, Ping & Loet Leydesdorff,  Analysis of the Citation Environments of Journals in Computer Science, Journal of the China Society for Scientific and Technical Information, 26(6), 923-933, 2007. <pdf-version>

S&T Publication Rates: the bigger picture, SciDev.Net, 20 December 2007.

Kostoff, R. N., del Rio, J. A., Cortes, H. D., Smith, C., Smith, A., Wagner, C., Leydesdorff, L., Karypis, G., Malpohl, G., & Tshiteya, R. (2007). Clustering methodologies for identifying country core competencies. Journal of Information Science, 33(1), 21-40.

Indicators of Structural Change in the Dynamics of Science: Entropy Statistics of the SCI Journal Citation Reports, In: T. Braun (ed.), The Impact Factors of Scientific and Scholarly Journals. Its Use and Misuse.  Budapest: Akadémiai  Kiadó, 2007, pp. 97-126. (click here for pdf-version)

Top-down Decomposition of the Journal Citation Report of the Social Science Citation Index: Graph- and factor-analytical approaches. In: T. Braun (ed.), The Impact Factors of Scientific and Scholarly Journals. Its Use and Misuse.  Budapest: Akadémiai  Kiadó, 2007, pp. 127-148.


200
6:

The Knowledge-Based Economy: Modeled, Measured, Simulated. Boca Raton, FL: Universal Publishers. 385 pp. ISBN 158112-937-8.

Anticipation and the Non-linear dynamics of Meaning-Processing in Social Systems, Paper to be presented at the World Congress of Sociology, Durban, July 2006. <pdf-version>

Loet Leydesdorff and Martin Meyer, Triple Helix Indicators of Knowledge-Based Innovation Systems (Introduction to the Special Issue), Research Policy, 35(10), 2006, 1441-1449. <pdf-version>

Hyperincursion and the Globalization of a Knowledge-Based Economy, In: D. M. Dubois (Ed.) Proceedings of the 7th Intern. Conf. on Computing Anticipatory Systems CASYS'05, Liège, Belgium, 8-13 August 2005. Melville, NY: American Institute of Physics Conference Proceedings, Vol. 839, 2006, pp. 560-569; <pdf-version>

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), 2006, 231-258. <pdf-version>

Loet Leydesdorff and Michael Fritsch, Measuring the Knowledge Base of Regional Innovation Systems in Germany in terms of a Triple Helix Dynamics, Research Policy, 35(10), 2006, 1538-1553. <pdf-version>

Loet Leydesdorff, Wilfred Dolfsma, & Gerben van der Panne, Measuring the Knowledge Base of an Economy in terms of Triple-Helix Relations among 'Technology, Organization, and Territory',  Research Policy 35(2), 2006, 181-199.  <pdf-version>

Can Scientific Journals be Classified in terms of Aggregated Journal-Journal Citation Relations using the Journal Citation Reports? Journal of the American Society for Information Science and Technology, 57(5) (2006) 601-613. <pdf-version>

Loet Leydesdorff & Stephen Bensman, Classification and Powerlaws: The logarithmic tranformation, Journal of the American Society for Information Science and Technology 57(11) (2006) 1470-1486. <pdf-file>

Zhou, Ping & Loet Leydesdorff, The emergence of China as a leading nation in science, Research Policy, 35(1), 2006, 83-104 <pdf version>

A kommunikáció szociológiai elmélete: Társadalmi kommunikáció sorozat (transl. Jakab András). Budapest: Typotext, 2006. 250 pp. ISBN: 963 9548 54 5.

卢曼,哈贝马斯和沟通理论, (transl. Feng Jianpeng, 2006) <pdf-version>. [original in: Systems Research and Behavioral Science, 17(3) (2000) 273–288]

Loet Leydesdorff & Liwen Vaughan, Co-occurrence Matrices and their Applications in Information Science: Extending ACA to the Web Environment, Journal of the American Society for Information Science & Technology 57(12) (2006) 1616-1628. <pdf-version>

"While a Storm is Raging on the Open Sea": Regional Development in a Knowledge-based Economy, Journal of Technology Transfer, 31(1), 2006, 189-203. <pdf-version>

Philip Cooke and Loet Leydesdorff, Regional Development in the Knowledge-Based Economy: The Construction of Advantage. Introduction to the Special Issue. Journal of Technology Transfer, 31 (1), 2006, 5-15; <pdf-version>

The Biological Metaphor of a (Second-order) Observer and the Sociological Discourse, Kybernetes 35 (3/4) (2006), 531-546 <pdf-version>

Michaël Deinema and Loet Leydesdorff, The Two Faces of American Power: Military and Political Communication during the Cuban Missile Crisis, Kybernetes 35 (3/4) (2006) 547-566; <pdf-version>

The Knowledge-Based Economy and the Triple Helix Model. In: Wilfred Dolfsma & Luc Soete (Eds.), Understanding the Dynamics of a Knowledge Economy, Cheltenham: Edward Elgar, 2006, pp. 42-76.

Rob Goldstone and Loet Leydesdorff, The Import and Export of Cognitive Science, Cognitive Science 30(6) (2006), 983-993. <pdf-version>

Iina Hellsten, Loet Leydesdorff, & Paul Wouters, Multiple Presents: How Search Engines Re-write the Past, New Media & Society, 8(6) (2006), 901-924; <pdf-version>

Loet Leydesdorff, Ping Zhou, Min-ho So, & Han-Woo Park, 세계 과학 시스템의 변화 [Recognizing a change in World Science System], The Journal of Yeungnam Regional Development 35(2) (2006), 69-86; <pdf-version>

Caroline Wagner & Loet Leydesdorff, Measuring the globalization of knowledge networks, Paper presented at “Blue Sky II 2006:” What Indicators for Science, Technology and Innovation Policies in the 21st Century. Paris: OECD; at http://www.oecd.org/document/24/0,2340,en_2649_34451_37083800_1_1_1_1,00.html.

Special issue: Toward an ecosystem for innovation -  implications for management, policy and higher education. Introduction by Sheila Tobias, Kenneth Smith, and Loet Leydesdorff. Industry & Higher Education 20(4), 2006, 215-277.

The Triple Helix and Knowledge-Based Innovation Systems. Pp. 143-152 in: Cooperation between the economic, academic and governmental spheres: Mechanisms and levers, Miroslav Rebernik et al. (Eds.), Proceedings of the 26th Conference on Entrepreneurship and Innovation, Maribor, Slovenia, March 30-31, 2006.

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