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"Structuration" by Intellectual Organization: 
The Configuration of Knowledge in Relations among Structural Components in
Networks of Science

Using aggregated journal-journal citation networks, the measurement of the
knowledge base in empirical systems is factor-analyzed in two cases of
interdisciplinary developments during the period 1995-2005: (i) the
development of nanotechnology in the natural sciences and (ii) the
development of communication studies as an interdiscipline between social
psychology and political science. The results are compared with a case of
stable development: the citation networks of core journals in chemistry.
These citation networks are intellectually organized by networks of
expectations in the knowledge base at the specialty (that is, above-journal)
level. This "structuration" of structural components (over time) can be
measured as configurational information. The latter is compared with the
Shannon-type information generated in the interactions among structural
components: the difference between these two measures provides us with a
measure for the redundancy generated by the specification of a model in the
knowledge base of the system. This knowledge base incurs (against the
entropy law) to variable extents on the knowledge infrastructures provided
by the observable networks of relations. 

<pdf> available at
http://www.leydesdorff.net/structuration/structuration.pdf  
** apologies for cross-postings
________________________________________
Loet Leydesdorff 
Professor, University of Amsterdam
Amsterdam School of Communications Research (ASCoR)
Kloveniersburgwal 48, 1012 CX Amsterdam.
Tel. +31-20-525 6598; fax: +31-842239111
[log in to unmask] ; http://www.leydesdorff.net/ 
Visiting Professor 2007-2010, ISTIC, Beijing; Honorary Fellow 2007-2010,
SPRU, University of Sussex 

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