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Original Articles
Impact factor surge in Korean medical journals during the COVID-19 era: a bibliometric study
Chansu Park, Sejin Park, Hyeonseok Seo, Janghyeog Oh, Dongryeong Kim, Junha Kang, Hanul Kang, Hyunsung Kang, Yaechan Kim, Mi Ah Han
Sci Ed. 2024;11(1):55-61.   Published online December 18, 2023
DOI: https://doi.org/10.6087/kcse.320
  • 2,604 View
  • 85 Download
AbstractAbstract PDFSupplementary Material
Purpose: The multiyear COVID-19 pandemic has affected the volume and speed of publications in scientific journals. This study evaluated trends in the impact measures of international medical journals published in Korea, including the journal impact factor (JIF).
Methods
We selected Science Citation Index Expanded journals with the country/region set to Korea and the academic category classified as “clinical medicine” in Journal Citation Reports. Trends in indicators such as the JIF and Journal Citation Indicator (JCI) were assessed for journals with JIF information from 2018 to 2022. Ratios and differences between the measures were calculated to determine the extent of the change.
Results
We identified 43 journals, and the average JIF of those journals increased from 2.33 in 2018 and 2.50 in 2019 to 3.45 in 2020 and 3.86 in 2021. Other measures, such as the 5-year JIF and JCI, steadily increased, and the proportion of gold open access journals also increased significantly. However, the JCI and Eigenfactor scores remained steady or showed relatively small increases. Furthermore, impact measures declined in 2022, including a JIF decrease to 3.55.
Conclusion
We presented trends in quantitative measurements for international medical journals in Korea, and found an overall increase. Journals need to maintain a rigorous publication process to improve the quality of their research and the research community needs to exercise caution when using quantitative measures to evaluate journals. Further research is required to examine the quantitative indicators of journals, including their publication policies, research topics, and long-term trends.
Publishing trends of journals and articles in Journal Citation Reports during the COVID-19 pandemic: a descriptive study
Sang-Jun Kim, Kay Sook Park
Sci Ed. 2023;10(1):78-86.   Published online February 16, 2023
DOI: https://doi.org/10.6087/kcse.300
  • 2,759 View
  • 265 Download
  • 2 Web of Science
  • 1 Crossref
AbstractAbstract PDFSupplementary Material
Purpose: This study aimed to investigate the changes that occurred in journal and article publishing during the noncontact period that started in 2020 due to COVID-19.
Methods
The integrated journal list in Journal Citation Reports (JCR) 2017–2021 and the search results of Web of Science were analyzed using pivot tables in Microsoft Excel. The articles, citations, impact factor (IF), publishers, open access (OA) status, and compound annual growth rate (CAGR) were investigated using the data.
Results
The CAGRs of articles, citations, and IFs in JCR journals increased throughout the COVID-19 pandemic. Moreover, the increase in OA articles was accompanied by a decreasing share of subscription articles. The top 20 journals in JCR-SCIE (Science Citation Index Expanded), based on the number of articles, accepted OA policies and showed a strong influence, accounting for 7% to 9% of all articles. MDPI and Frontiers were OA publishers included among the top 10 publishers. Large publishers maintained their competitiveness through mergers and acquisitions with OA publishers. Due to the rapid distribution of OA and early access articles as part of the international response to overcome COVID-19, the CAGRs of citations and IFs increased more than that of articles, and the publication and use of journal articles have become more active.
Conclusion
The publication and use trends in JCR journals analyzed herein will provide useful information for researchers’ selection of journals for article submission, analyses of research performance, and libraries’ journal subscription contracts.

Citations

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  • Trends in research on ChatGPT and adoption-related issues discussed in articles: a narrative review
    Sang-Jun Kim
    Science Editing.2023; 11(1): 3.     CrossRef
Influence of the top 10 journal publishers listed in Journal Citation Reports based on six indicators
Sang-Jun Kim, Kay Sook Park
Sci Ed. 2020;7(2):142-148.   Published online August 20, 2020
DOI: https://doi.org/10.6087/kcse.209
  • 7,015 View
  • 205 Download
  • 8 Web of Science
  • 9 Crossref
AbstractAbstract PDFSupplementary Material
Purpose: : An accurate evaluation of the influence of the largest publishers in world journal publishing is a starting point for negotiating journal subscriptions and an important issue for research libraries. This study was conducted to evaluate the influence of the largest publishers based on Journal Citation Reports (JCR) indicators.
Methods
From JCR 2014 to 2018 data, a unique journal list by publisher was created in Excel. The top 10 publishers were selected and evaluated in terms of the average share of six JCR indicators including the impact factor, Eigenfactor score, and article influence score, along with the number of journals, articles, and citations.
Results
The top three publishers accounted for about 50% of the JCR indicators, the top five for 60%, and the top 10 for 70%. Therefore, the concentration of the top three publishers, with a share exceeding 50% for five indicators, was more intensive than has been reported in previous studies. For the top 10 publishers, not only the number of journals and articles, but also citations and the impact factor, which reflect the practical use of journals, were increasing.
Conclusion
These evaluation results will be important to research libraries and librarians in deciding upon journal subscriptions using publisher information, to journal publishers trying to list their journals in JCR, and to consortium operators to negotiate strategically. Using the unique journal list created in this research process, various follow-up studies are possible. However, it is also urgent to build a standardized world journal list with accurate information.

Citations

Citations to this article as recorded by  
  • Publishing international library and information science journals: The changing landscape
    Eungi Kim
    Journal of Librarianship and Information Science.2023; 55(2): 478.     CrossRef
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    Rex P. Bringula, Francis Arlando L. Atienza
    Education and Information Technologies.2023; 28(5): 4893.     CrossRef
  • Publishing trends of journals and articles in Journal Citation Reports during the COVID-19 pandemic: a descriptive study
    Sang-Jun Kim, Kay Sook Park
    Science Editing.2023; 10(1): 78.     CrossRef
  • Changes in article share and growth by publisher and access type in Journal Citation Reports 2016, 2018, and 2020
    Sang-Jun Kim, Kay Sook Park
    Science Editing.2022; 9(1): 30.     CrossRef
  • Factors, Components and Dynamics: Investigation of Journal Self-Citation and Citation by Equal Opportunity Model
    Yangping Zhou
    SSRN Electronic Journal.2022;[Epub]     CrossRef
  • Open access status of journals and articles in Journal Citation Reports
    Sang-Jun Kim, Kay Sook Park
    Science Editing.2021; 8(1): 26.     CrossRef
  • Influence of open access journals on the research community in Journal Citation Reports
    Sang-Jun Kim, Kay Sook Park
    Science Editing.2021; 8(1): 32.     CrossRef
  • Self-citation and citation of top journal publishers and their interpretation in the journal-discipline context
    Yangping Zhou
    Scientometrics.2021; 126(7): 6013.     CrossRef
  • Market share of the largest publishers in Journal Citation Reports based on journal price and article processing charge
    Sang-Jun Kim, Kay Sook Park
    Science Editing.2020; 7(2): 149.     CrossRef
Review
Overview of journal metrics
Kihong Kim, Yeonok Chung
Sci Ed. 2018;5(1):16-20.   Published online February 19, 2018
DOI: https://doi.org/10.6087/kcse.112
  • 15,250 View
  • 437 Download
  • 21 Web of Science
  • 18 Crossref
AbstractAbstract PDF
Various kinds of metrics used for the quantitative evaluation of scholarly journals are reviewed. The impact factor and related metrics including the immediacy index and the aggregate impact factor, which are provided by the Journal Citation Reports, are explained in detail. The Eigenfactor score and the article influence score are also reviewed. In addition, journal metrics such as CiteScore, Source Normalized Impact per Paper, SCImago Journal Rank, h-index, and g-index are discussed. Limitations and problems that these metrics have are pointed out. We should be cautious to rely on those quantitative measures too much when we evaluate journals or researchers.

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    Luis Erick Coy-Aceves, Benito Corona-Vasquez
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    Journal of Informetrics.2022; 16(4): 101349.     CrossRef
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    Sun Huh
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    Brazilian Dental Journal.2020; 31(5): 457.     CrossRef
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    Ali Yavuz KARAHAN
    Acta Medica Alanya.2020; 4(2): 203.     CrossRef
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    Irish Journal of Medical Science (1971 -).2019; 188(3): 939.     CrossRef
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    Learned Publishing.2019; 32(4): 367.     CrossRef
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    Sun Huh
    Infection & Chemotherapy.2018; 50(3): 219.     CrossRef
Original Articles
Current status of Science Citation Index Expanded listing of Korean medical journals and effect of PubMed electronic publication ahead of print to their impact factors
Jae Jun Shim, Byung-Ho Kim
Sci Ed. 2016;3(2):94-99.   Published online August 20, 2016
DOI: https://doi.org/10.6087/kcse.72
  • 16,006 View
  • 150 Download
AbstractAbstract PDF
This year marked the twentieth anniversary of the Korean Association of Medical Journal Editors (KAMJE). The number of member journals has increased from 105 to 257 since its inception in 1996. In the same period, the number of journals listed in the Science Citation Index Expanded (SCIE) has increased from zero to 35. The average journal impact factor (JIF) that was initially 0.13 has now increased by more than tenfold on average to 1.45 as of 2014. Many KAMJE journals that are not indexed in the SCIE are putting their best effort towards eventual inclusion. Following listing with SCIE, however, editors have turned their attention towards the JIF and have shown interest in early online publication as a means of improving the JIF. The current status of PubMed electronic publication ahead of print (EAP) was surveyed among KAMJE journals that are indexed in the SCIE, and the impact of this EAP on the improvement of the JIF was investigated. Based on the survey, more than half of the members have started or are planning on implementing EAP. However, these efforts were found to be still in their infancy, and they have been insufficient to serve as a basis for scientific analysis. Since the sample size is too small and the implementation period too short to statistically analyze the effects of early publication on the JIF, a case-by-case approach was taken. Based on case studies, it is difficult to draw conclusions yet about whether online early publication enhances the JIF.
Increased citation of Korean scholarly journals during the years 2008 to 2013
Eun Seong Hwang
Sci Ed. 2016;3(1):13-18.   Published online February 19, 2016
DOI: https://doi.org/10.6087/kcse.57
  • 11,375 View
  • 143 Download
AbstractAbstract PDF
Korean academic journals are registered in Korea Citation Index, a government-operated journal indexing system. There has been a constant increase in registry, but whether this change accompanies an increase in quality of the journals has not been determined. In this study, by using the index data of Korea Citation Index, status of journal citation in eight different research fields during the years 2008 to 2013 was analyzed. Impact factors of top 50% journals and the number of the journals with high impact factor increased in all the fields, while the number of journals with low impact factor decreased. The change varied in degree among the different fields, and that in social science and medicine was most positive. These changes appear not to be caused by an increase in self citation, although self citation itself is quite high. International citation of the journals also substantially increased in the fields of science, technology, and medicine. These results indicate a genuine increase in the quality of papers and an improvement in citability of the journals published in Korea. This positive change could be attributed to several factors that include the quality of the information in the papers and the environments that encourage the citation of domestic journals.
Case Studys
Scientific and academic journals in the Philippines: status and challenges
Evelyn Mae Tecson-Mendoza
Sci Ed. 2015;2(2):73-78.   Published online August 14, 2015
DOI: https://doi.org/10.6087/kcse.47
  • 65,535 View
  • 931 Download
  • 6 Web of Science
  • 8 Crossref
AbstractAbstract PDF
As of July 2015, 28 Philippine scientific journals out of 777 Philippine scholarly journals are listed in the master journal lists of Thomson Reuters (TR), Scopus, or both. Of these scientific journals, thirteen are published by universities, two by government institutions, ten by professional organizations and three by private for-profit or non-profit organizations. Nineteen of these journals are over 25 years old, with the Philippine Journal of Science and the Philippine Agricultural Scientist being the oldest at 108 and 103 years in publication, respectively. Scientific journals in the Philippines, like other countries in Asia, face various increasing challenges. Among these challenges are getting listed in the master journal lists and citation databases of TR, Scopus, or both; obtaining funding; reaching a wider readership; attaining higher impact factors; competing for papers; and increased submission of manuscripts from outside the country. To promote the improvement of local journals, the National Academy of Science and Technology Philippines has given outstanding publication awards for scientific papers published in local journals for the past two decades. The Philippine Commission on Higher Education has accredited local journals that are included in either TR and Scopus journal master lists, and provides monetary incentives to accredited journals. Training workshops on scientific article writing and editorial management are conducted for researchers and editors by universities and professional and government organizations. A network of Philippine science editors has been formed to work together to upgrade and modernize selected journals to international standards.

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Scientific journal status in Japan: the case of agricultural sciences journals, primarily Grassland Science
Toshihiko Yamada
Sci Ed. 2015;2(1):14-17.   Published online February 28, 2015
DOI: https://doi.org/10.6087/kcse.30
  • 16,003 View
  • 126 Download
  • 1 Web of Science
  • 1 Crossref
AbstractAbstract PDF
In Japan, most scholarly journals have been published by scientific societies as in other Asian countries. In those days, Japanese and English language articles were commonly found within the same issue of an academic journal published by scientific societies. Many societies of natural sciences started to publish separate periodicals of international journals with an English version and a domestic Japanese version 20 years ago due to the internationalization of the scientific community. The Japanese Society of Grassland Science has also published both an international journal called Grassland Science and a domestic journal called Japanese Journal of Grassland Science (Nihon Sochigakkai Shi) since 2005. The first impact factor for Grassland Science was announced in 2013. International foreign handling editors represent more than half of all handling editors covering the world. Thus, recently, the number of submissions from foreign countries, especially from China, has drastically increased. With the increase in submissions, it becomes difficult to edit a journal professionally because the editors are generally professors in universities and scientists in national institutes who work as part-time volunteer editors and have been changed frequently. The decrease in the number of members is also a serious problem in many societies of agriculture sciences. The construction of an Asian network for scientific information may be one direction in the near future. Additionally, it is be necessary to change to open access journals in order to stabilize the publishing management of the journals.

Citations

Citations to this article as recorded by  
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    Kihong Kim
    Science Editing.2015; 2(1): 1.     CrossRef
Original Articles
Pattern of reference types and impact factors of journals in the Korea Citation Index according to academic discipline
So-Hyeong Kim
Sci Ed. 2015;2(1):10-13.   Published online February 28, 2015
DOI: https://doi.org/10.6087/kcse.29
  • 20,388 View
  • 109 Download
  • 1 Web of Science
  • 1 Crossref
AbstractAbstract PDF
The Korea Citation Index (KCI) is a citation database for scholarly journals from Korea, the number of journals of which is 2,168 in January, 2015. This article aims to analyze the pattern of reference types and impact factors of journals in the KCI according to academic discipline. Journals of the KCI were classified according to academic discipline: humanities, arts and sports, social science, science, and multi-disciplinary science. Science journals were sub-classified as natural science, engineering, agriculture & fisheries, and medical health. The pattern of reference types was classified as journal article, book, report/thesis/internet, and others. Changing patterns of the two-year impact factor were described according to the publication year of journals in each discipline. The reference type of each discipline in 2010 showed different patterns. In humanities, the portion of books out of cited literatures was 51.1%, while the portion of books in natural science, engineering, medical health, and agriculture & fisheries fields were 11.0%, 10.0%, 7.0%, and 11.0%, respectively. In social science, the portion of journal articles was 53.1% and books 27.3%. In medical health, the portion of journal article was 87.6%. Journals’ average impact factors in 2011 were 0.9 for social science, 0.8 for arts and sports, 0.55 for interdisciplinary, 0.5 for agriculture and fisheries and humanities, 0.45 for natural science, 0.32 for engineering, and 0.3 for medical health. Researchers in humanities in Korea use books as a primary source of references, while those in other disciplines use journals as a major source of references. Higher impact factors in social science journals and lower ones in science journals mean that social scientists in Korea deal with mainly domestic topics, while scientist deal with global topics.

Citations

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    Sun Huh
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Correlation among the citation indices of Korean scientific journals listed in international databases
Jung A Kim, Sun Huh, Min Sun Chu
Sci Ed. 2014;1(1):27-36.   Published online February 13, 2014
DOI: https://doi.org/10.6087/kcse.2014.1.27
  • 24,057 View
  • 184 Download
  • 7 Web of Science
  • 6 Crossref
AbstractAbstract PDF

We would like to verify the correlation among various citation indicators of 62 Korean scientific journals listed in the Web of Science (WoS) and Scopus. From a total of 85 Korean journals listed in both WoS as of January 2013, and 132 journals listed in Scopus as of 2011, 62 Korean journals listed in both citation indices were selected for analysis. Citation index indicators selected for analysis include impact factor (IF), 5-year impact factor (5yrIF), Eigenfactor score (EF), article influence score (AIS) (list of WoS indicators), SCImago journal rank (SJR), h-index, and impact index (ImIndex) (list of Scopus indicators). It took an average of eight years for a newly founded journal to be listed in Science Citation Index Expanded (SCIE). Since the IF, ImIndex, and AIS values failed to exceed 1.0, Korean journals’ popularity and prestige were confirmed to be minimal. Analyzed journals that were written in English exhibited higher SJR and h-index values than ones written in Korean. WoS’ IF exhibited a correlation with WoS’ 5yrIF, EF, AIS, and Scopus’ SJR, h-index, and ImIndex. Since the ‘popularity and prestige of Korean journals’ have been confirmed to be minimal, steps must be taken to improve this status. Popularity-based indicators have been shown to strongly correlate with prestige-based indicators in Korean science journals. Therefore, there must be a strategic approach taken to improve IF values.

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Increase in frequency of citation by SCIE journals of non-Medline journals after listing in an open access full-text database
Geum-Hee Jeong, Sun Huh
Sci Ed. 2014;1(1):24-26.   Published online February 13, 2014
DOI: https://doi.org/10.6087/kcse.2014.1.24
  • 20,535 View
  • 198 Download
  • 30 Web of Science
  • 35 Crossref
AbstractAbstract PDF

We hypothesized that it is not open access status but rather exposure in the PubMed platform that affects citation frequency in medical journals. In November 2008, medical journals from Korea began to be added to PubMed Central (PMC). Therefore, it would be interesting to know whether or not their impact factor based on Web of Science has increased since the journals were listed in PMC/PubMed. To answer this question, a citation analysis of seven journals that have been indexed in PMC since 2008 or 2009 was done. Only non-Medline journals were selected and the impact factors of five Medline journals were compared. The impact factor was calculated via Web of Science. Journal Citation Reports (JCR) data were used if the data of the target journals were provided in JCR. Trends for the impact factors of different years were analyzed using dBSTAT ver. 5.0. There has been an increasing rates of the impact factor for the seven non-Medline journals, 1.92 in 2011 over 2010; 3.27 in 2010 over 2009; 1.12 in 2012 over 2011. As for the five Medline journals, the increasing rate in 2010 over 2009 was 1.18; however, those of 2011 over 2010 and 2012 over 2011 were 1.01 and 1.04 respectively. The Science Citation Index Expanded impact factor of medical journals published in Korea can be increased if those journals are published in English and listed in PMC. This is an effect of the platform in which the journals are listed and not just an effect of free access.

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  • Journal of Gastric Cancer's Promotion to International Journal from the Perspective of Biliometric Analysis
    Sun Huh
    Journal of Gastric Cancer.2016; 16(1): 8.     CrossRef
  • Clinics in Orthopedic Surgery's Evolution into an International Journal Based on Journal Metrics
    Sun Huh
    Clinics in Orthopedic Surgery.2016; 8(2): 127.     CrossRef
  • How to Promote the Korean Journal of Child Studies to an International Journal
    Sun Huh
    Korean Journal of Child Studies.2016; 37(1): 7.     CrossRef
  • Analysis of the suitability of the Korean Federation of Science and Technology Societies journal evaluation tool
    Geum‐Hee Jeong, Sun Huh
    Learned Publishing.2016; 29(3): 193.     CrossRef
  • Current status of Science Citation Index Expanded listing of Korean medical journals and effect of PubMed electronic publication ahead of print to their impact factors
    Jae Jun Shim, Byung-Ho Kim
    Science Editing.2016; 3(2): 94.     CrossRef
  • Status of digital standards in Korean medical journals in 2016
    Geum Hee Jeong, Sun Huh
    Science Editing.2016; 3(2): 100.     CrossRef
  • How much progress has been made in journal metrics two years after the citation analysis of theKorean Journal of Urology?
    Sun Huh
    Korean Journal of Urology.2015; 56(4): 276.     CrossRef
  • Evidence of the Internationalization ofClinical EndoscopyBased on Journal Metrics
    Sun Huh
    Clinical Endoscopy.2015; 48(4): 317.     CrossRef
  • Scientific and academic journals in the Philippines: status and challenges
    Evelyn Mae Tecson-Mendoza
    Science Editing.2015; 2(2): 73.     CrossRef
  • The Elevation ofAnnals of Rehabilitation Medicineto the Status of an International Journal After Adopting an English-Only Policy
    Sun Huh
    Annals of Rehabilitation Medicine.2015; 39(5): 661.     CrossRef
  • How much is Journal of Educational Evaluation for Health Professions promoted based on journal metrics?
    Sun Huh
    Journal of Educational Evaluation for Health Professions.2015; 12: 57.     CrossRef
  • Journal Metrics-Based Position ofDiabetes & Metabolism Journalafter the Change of Its Text Language to English
    Sun Huh
    Diabetes & Metabolism Journal.2014; 38(3): 187.     CrossRef
  • Editing and publishing scholarly journals in the internet age
    Kihong Kim
    Science Editing.2014; 1(1): 2.     CrossRef
  • Application of new information technologies to scholarly journals: ORCID, CrossMark, and FundRef
    Sun Huh
    Journal of the Korean Medical Association.2014; 57(5): 455.     CrossRef
  • How Far Has theInternational Neurourology JournalProgressed Since Its Transformation Into an English Language Journal?
    Sun Huh
    International Neurourology Journal.2014; 18(1): 3.     CrossRef
  • The basics of CrossRef extensible markup language
    Rachael Lammey
    Science Editing.2014; 1(2): 76.     CrossRef
  • Journal Article Tag Suite 1.0: National Information Standards Organization standard of journal extensible markup language
    Sun Huh
    Science Editing.2014; 1(2): 99.     CrossRef
  • How Journal Metrics Illustrate the Transformation of Archives of Plastic Surgery into an International Journal
    Sun Huh
    Archives of Plastic Surgery.2014; 41(06): 617.     CrossRef
  • What is the position ofClinical and Experimental Reproductive Medicinein its scholarly journal network based on journal metrics?
    Sun Huh
    Clinical and Experimental Reproductive Medicine.2014; 41(4): 147.     CrossRef

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