dynamic animations of journal maps; preprint version

Loet Leydesdorff loet at LEYDESDORFF.NET
Mon Feb 11 14:41:33 EST 2008

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:loet at leydesdorff.net> loet at leydesdorff.net;
<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; schank at ira.uka.de.

aps.pdf> <click here for pdf>
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