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    Visualization of the Citation Impact Environments of Scientific Journals: An online mapping exercise

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    Author
    Leydesdorff, Loet
    Issue Date
    2006
    Submitted date
    2006-03-19
    Keywords
    Citation Analysis
    Local subject classification
    Visualization
    Journal
    Citation
    Vector-space
    Pajek
    Map
    
    Metadata
    Show full item record
    Citation
    Visualization of the Citation Impact Environments of Scientific Journals: An online mapping exercise 2006,
    URI
    http://hdl.handle.net/10150/105221
    Abstract
    Aggregated journal-journal citation networks based on the Journal Citation Reports 2004 of the Science Citation Index (5968 journals) and the Social Science Citation Index (1712 journals) are made accessible from the perspective of any of these journals. A vector-space model is used for normalization, and the results are brought online at http://www.leydesdorff.net/jcr04 as input-files for the visualization program Pajek. The user is thus able to analyze the citation environment in terms of links and graphs. Furthermore, the local impact of a journal is defined as its share of the total citations in the specific journal's citation environments; the vertical size of the nodes is varied proportionally to this citation impact. The horizontal size of each node can be used to provide the same information after correction for within-journal (self )citations. In the "citing" environment, the equivalents of this measure can be considered as a citation activity index which maps how the relevant journal environment is perceived by the collective of authors of a given journal. As a policy application, the mechanism of interdisciplinary developments among the sciences is elaborated for the case of nanotechnology journals.
    Type
    Preprint
    Language
    en
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