نویسندگان
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
This paper examines the role of world countries in
Library and Information Science (LIS) research for a 50 year period
(1963-2012) using scientometrics and Social Network Analysis
(SNA) approaches. A total of 58757 papers published in 83 journals
indexed in the Web of Science’s Information Science and Library
Science subject category were covered in this study. The overall
structure and evolution of the collaboration network of countries were
investigated using macro-level SNA metrics such as density,
connectedness, clustering coefficient, mean distance, diameter,
components and clusters of the network. Additionally, scientometric
indicators such as the number of publications, number of citations and
self-citations, citations per paper, number of highly cited papers,
percentage of citedness, activity index and relative quality index as
well as four micro-level SNA metrics, namely degree, betweenness,
closeness and number of immediate vertices were adopted to analyze
the function of countries in the network. Findings show that the
58757 papers sampled was contributed by 151 unique countries
(vertices) connected together through 11535 links (co-authorships).
The collaboration network of countries seems to exhibit “scale-free”
and “small world” network properties and the famous notion of “six
degrees of separation” is valid in this network. The co-authorship
network of countries consists of 15 components, the largest of which
contains 137 vertices, yielded a ratio of 90% of the whole network.
Clustering analysis shows that this network comprises 39 clusters.Amongst them, the eleventh and ninth clusters which contain US and UK, have the
highest density. The function of the top 50 countries in LIS research was also
studied using various scientometric and SNA matrices
کلیدواژهها [English]
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