Co-author and Keyword Networks and their Clustering Appearance in Preventive Medicine Fields in Korea: Analysis of Papers in the Journal of Preventive Medicine and Public Health, 1991~2006.

Minsoo Jung; Dongjun Chung

doi:10.3961/jpmph.2008.41.1.1

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English Abstract Co-author and Keyword Networks and their Clustering Appearance in Preventive Medicine Fields in Korea: Analysis of Papers in the Journal of Preventive Medicine and Public Health, 1991~2006.: Minsoo Jung, Dongjun Chung; Journal of Preventive Medicine and Public Health 2008;41(1):1-9
DOI: https://doi.org/10.3961/jpmph.2008.41.1.1

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¹Department of Medical Sociology, Graduate School of Public Health, Seoul National University, Korea. snu6449@anu.ac.kr
²Department of Statistics, University of Wisconsin-Madison, Korea.

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Abstract

OBJECTIVES
This study evaluated knowledge structure and its effect factor by analysis of co-author and keyword networks in Korea's preventive medicine sector. METHODS: The data was extracted from 873 papers listed in the Journal of Preventive Medicine and Public Health, and was transformed into a co-author and keyword matrix where the existence of a 'link' was judged by impact factors calculated by the weight value of the role and rate of author participation. Research achievement was dependent upon the author's status and networking index, as analyzed by neighborhood degree, multidimensional scaling, correspondence analysis, and multiple regression. RESULTS: Co-author networks developed as randomness network in the center of a few high-productivity researchers. In particular, closeness centrality was more developed than degree centrality. Also, power law distribution was discovered in impact factor and research productivity by college affiliation. In multiple regression, the effect of the author's role was significant in both the impact factor calculated by the participatory rate and the number of listed articles. However, the number of listed articles varied by sex. CONCLSIONS: This study shows that the small world phenomenon exists in co-author and keyword networks in a journal, as in citation networks. However, the differentiation of knowledge structure in the field of preventive medicine was relatively restricted by specialization.

Keywords: Preventive medicine Sociology Interdisciplinary communication Korea

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