• Journal of the Korean Society for information Management
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• v.26 no.4
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• pp.169-186
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• 2009

This paper examined what factors affect the immediacy index showing the average number of times an article is cited in the year it is published. Not only Seventy-one immediacy indexes for subject field biology on JCR 2008 edition were gathered, but also many characteristics of scholarly journals that may influence the indexes directly or indirectly were aggregated. Simple correlation coefficient analysis, factor analysis, and regression analysis were performed on the paper. Therefore factors such as physical volume, availability, forthcoming issue, age and language explaining 67.64% of total variance were identified. After regression analysis using these factors as independent variables, the results were statistically significant. The results showed physical volumes, the total pages of publication, have an influence upon immediacy indexes obviously, although it is expected that journal reputations may affect immediacy indexes. Generally open access journals had high immediacy indexes. High ranked journals on immediacy index were apt to be issued frequently, uploaded very often on PMC, and published in major countries including United States and United Kingdom.

• Journal of Information Management
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• v.36 no.3
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• pp.51-70
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• 2005

It is meaningful to develop the scholarly digital archives in a respect that it could preserve the research papers using digital media. The scholarly digital archives provide scientists with the information source with which scientists could actively accomplish research. This study measured based on the citation analysis to what extent PMC, which is life science scholarly digital archives, has an effect on the scholarly communication in the same subject field. The findings are as follows. First, the three citation indicators, impact factor, immediacy index, and half-life, have no remarkable difference in between pre and post-digital archives era. Second, there were more cases that the major citation indicators increased rather than ones decreased with the appearance of the scholarly digital archives, as a result of ranking the scholarly journals after classifying according to subjects.

• Journal of the Korean Society for information Management
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• v.32 no.4
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• pp.7-27
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• 2015

This study is to analyze impact factor, self-citation, immediacy index and cited half-life through citation analysis of scholarly journals of LIS field in Korea. This study was analysed the 9,329 references cited in Korean scholarly journal of LIS field. As a result, it analyzed that the articles of Korean LIS journal among the cited references in scholarly journal of LIS field in Korea is very insignificant. In other words, the percentage of citations was observed 19.1% in Journal of Korean Library and Information Science Society (KSLIS), 20.2% in Journal of the Korean Society for Library and Information Science (KLISS), 17.0% in Journal of the Korean Society for Information Management (KOSIM), 18.8% in Korean Biblia Society for Library and Information Science (KBIBLIA). Also, the cited half-life was analysed 5.87 years in KSLIS, 5.40 years in KLISS, 4.25 years in KOSIM, 3.57 years in KBIBLIA. And Impact factor has been found to be very low compared to journals of other fields.