Authors: Savić, Miloš
Ivanović, Mirjana
Radovanović, Miloš
Ognjanović, Zoran 
Pejović, Aleksandar
Jakšić Kruger, Tatjana 
Title: The structure and evolution of scientific collaboration in Serbian mathematical journals
Journal: Scientometrics
Volume: 101
Issue: 3
First page: 1805
Last page: 1830
Issue Date: 1-Jan-2014
Rank: M21a
ISSN: 0138-9130
DOI: 10.1007/s11192-014-1295-6
Abstract: 
Digital preservation of scientific papers enables their wider accessibility, but also provides a valuable source of information that can be used in a longitudinal scientometric study. The Electronic Library of the Mathematical Institute of the Serbian Academy of Sciences and Arts (eLib) digitizes the most prominent mathematical journals printed in Serbia. In this paper, we study a co-authorship network which represents collaborations among authors who published their papers in the eLib journals in an 80 year period (from 1932 to 2011). Such study enables us to identify patterns and long-term trends in scientific collaborations that are characteristic for a community which mainly consists of Serbian (Yugoslav) mathematicians. Analysis of connected components of the network reveals a topological diversity in the network structure: the network contains a large number of components whose sizes obey a power-law, the majority of components are isolated authors or small trivial components, but there is also a small number of relatively large, non-trivial components of connected authors. Our evolutionary analysis shows that the evolution of the network can be divided into six periods that are characterized by different intensity and type of collaborative behavior among eLib authors. Analysis of author metrics shows that betweenness centrality is a better indicator of author productivity and long-term presence in the eLib journals than degree centrality. Moreover, the strength of correlation between productivity metrics and betweenness centrality increases as the network evolves suggesting that even more stronger correlation can be expected in the future.
Keywords: Author metrics | Co-authorship network | Collaborative behaviour | Connected components | Digital library | Evolutionary trends | Serbian mathematical journals
Publisher: Kluwer Academic Publishers
Project: Intelligent techniques and their integration into wide-spectrum decision support 
Development of new information and communication technologies, based on advanced mathematical methods, with applications in medicine, telecommunications, power systems, protection of national heritage and education 

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