Dynamic Animations of <http://www.leydesdorff.net/journals/index.htm> Journal Maps: <http://www.leydesdorff.net/journals/index.htm> Indicators of Structural <http://www.leydesdorff.net/journals/index.htm> Changes and Interdisciplinary Developments
The dynamic analysis of structural change because of potentially interdisciplinary developments among fields of science requires the integration of multivariate and time-series analysis. Recent developments in animation techniques enable us to distinguish the stress originating in each time-slice from the stress originating from the sequencing of time-slices, and thus to optimize the trade-offs between these two sources of variance using multidimensional scaling (MDS). Unlike traditional MDS, network visualization programs allow us to show not only the positions of the nodes, but also their relational attributes like betweenness centrality. Betweenness centrality in the vector space can be considered as an indicator of interdisciplinarity. Using this indicator, the dynamics of the citation impact environments of the journals Cognitive Science, Social Networks, and Nanotechnology are animated and assessed in terms of processes of structural change among the disciplines involved. Loet Leydesdorff <http://users.fmg.uva.nl/lleydesdorff/journals/#_ftn1> [a] & Thomas Schank <http://users.fmg.uva.nl/lleydesdorff/journals/#_ftn2> [b] <http://users.fmg.uva.nl/lleydesdorff/journals/#_ftnref1> [a] Amsterdam School of Communications Research (ASCoR), University of Amsterdam, Kloveniersburgwal 48, 1012 CX Amsterdam, The Netherlands; <mailto:[EMAIL PROTECTED]> [EMAIL PROTECTED]; <http://www.leydesdorff.net/> http://www.leydesdorff.net <http://users.fmg.uva.nl/lleydesdorff/journals/#_ftnref2> [b] Technical University of Karlsruhe, Faculty of Informatics, ITI Wagner, Box 6980, 76128 Karlsruhe, Germany; [EMAIL PROTECTED] <http://www.leydesdorff.net/journals/Dynamic%20Animations%20of%20Journal%20M aps.pdf> <click here for pdf>
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