• Korea journal of population studies
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• v.4 no.1
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• pp.5-13
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• 1981

• Korean Journal of Food Science and Technology
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• v.11 no.4
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• pp.314-321
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• 1979

• Proceedings of the KSR Conference
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• 2002.05a
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• pp.486-491
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• 2002

As the European Union has strengthened and computerized signalling systems have been widely used, the European common standards for the safety of railway signalling systems such as EN 50126, EN 50128, ENV 50129, EN 50159 began to be published from 1996 in CENELEC. At that time, a safety guideline, 'Safety Guidelines for Computerized Train Control and Protection Systems' was published in Japan. The Korean National Railroad also published a safety recommendation for the train control systems with taking into account the Korean railway conditions. Now the preparations for IEC/TC9 Standards are well underway and these standards correspond to CENELEC Standards referred above. These movements and activities are to cope with many technical and operational changes and to reflect the globalization trend of railway sectors along with the computerization of signalling devices. In this connection, this paper studies the globaliztion trend in the safety standards for railway signalling systems and discusses the counterplans for the trend.

• Journal of Fisheries and Marine Sciences Education
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• v.25 no.5
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• pp.1192-1204
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• 2013

This study aims to analyze the trend of study related to infant multicultural education, targeting the theses carried on Korean journals articles KCI journal and preliminary KCI journal from 2001 to 2012, and to provide analysis results as the basic data for execution of multicultural education. To achieve such goal of study, I analyzed the study trend of infant multicultural education studies carried in Korean journals per year, research subjects, research objects and research methods. As a result of this study, first, the number of studies related to infant multicultural education carried in Korean journals articles from 2001 to 2012 was a total of 190 pieces; for year, 27 pieces in 2008, 23 pieces in 2009, 40 pieces in 2010, 46 pieces in 2011 and 36 pieces in 2012, totaling 172 pieces corresponding to 90.5% of the entire thesis. This means that the number of study thesis began to increase substantially from 2008, meaning increased necessity of multicultural education in the field of child education. Second, as a result of analyzing the study trend per research subjects, research subjects was found in the order of 'beliefs recognition attitudes efficacy'(60 pieces), 'child development and adaptation'(48 pieces), 'programs and scale development'(28 pieces). Third, as a result of analyzing the study trend per objects of research, research objects was found in the order of 'teacher'(75 pieces), 'child'(67 pieces), 'literature'(43 pieces). And lastly, as a result of analyzing the study trend per research methods, research methods was found in the order of 'quantitative research'(112 pieces), 'literature research'(57 pieces), 'qualitative research'(31 pieces).

• The Korean Journal of Pain
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• v.34 no.3
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• pp.322-331
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• 2021

Background: The present study employed National Health Insurance Data to explore complex regional pain syndrome (CRPS) updated epidemiology in a Korean context. Methods: A CRPS cohort for the period 2009-2016 was created based on Korean Standard Classification of Diseases codes alongside the national registry. The general CRPS incidence rate and the yearly incidence rate trend for every CRPS type were respectively the primary and secondary outcomes. Among the analyzed risk factors were age, sex, region, and hospital level for the yearly trend of the incidence rate for every CRPS. Statistical analysis was performed via the chi-square test and the linear and logistic linear regression tests. Results: Over the research period, the number of registered patients was 122,210. The general CRPS incidence rate was 15.83 per 100,000, with 19.5 for type 1 and 12.1 for type 2. The condition exhibited a declining trend according to its overall occurrence, particularly in the case of type 2 (P < 0.001). On the other hand, registration was more pervasive among type 1 compared to type 2 patients (61.7% vs. 38.3%), while both types affected female individuals to a greater extent. Regarding age, individuals older than 60 years of age were associated with the highest prevalence in both types, regardless of sex (P < 0.001). Conclusions: CRPS displayed an overall incidence of 15.83 per 100,000 in Korea and a declining trend for every age group which showed a negative association with the aging shift phenomenon.

• Journal of The Korean Association For Science Education
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• v.40 no.5
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• pp.531-542
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• 2020

The purpose of this study is to explore the research trend changes of convergence education since 2011 compared to the convergence education research that has been steadily continuing in science education. The trend in convergence education were investigated by comparing the number of publications, research subjects, research content, and topic linkages with previous studies, and using the network analysis method to check recent research trends. In the field of science education, the number of papers related to convergence education has been published more than 8.0% steadily, and it has been increasing since 2012, then decreasing again from 2015 and gradually increasing again from 2017. The subjects of study were high in elementary school students, while those in middle school, high school, and university students were low. While the number of in-service teachers increased, the number of pre-service teachers decreased, and the literature and public increased somewhat. In study content, effectiveness studies decreased, while development studies increased, and theoretical and perception studies appeared similar. In thematic linkage, the intra-science linkage was 23.9%, and the extra-science linkage was 76.1% and engineering/technology and art were high in extra-science linkage. In network analysis, elementary, science, STEAM, and program words have a high frequency of appearance and appear together with other words to lead the network. The educational implications of the research trend of convergence education will be more emphasized in the field of science education in the future, and in order to take root in the education field, research on secondary students should be more actively studied. In addition, it is necessary to move away from research on STEAM-centered program development and effects, and to increase research to establish the philosophical basis and theoretical of convergence education.

• The Journal of Society for e-Business Studies
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• v.19 no.3
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• pp.51-64
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• 2014

It becomes more and more important for business survival to have the ability to predict the future with uncertainties increasing faster and faster. To predict the future, text mining tools are one of the main candidate other than traditional quantitative analyses, but those efforts are still at their infancy. This paper is to introduce one of those efforts using the case of company "P" in the steel industry. Even with only four month pilot studies, we found strong possibilities, if not testified robustly, to predict future industrial trends using text mining tools. For these text mining case studies, we categorized steel industry trend keywords into ten components (10 categories) to study ten different subjects for each category. Once found any meaningful changes in a trend, we had investigated in more detail what and how some trend happened so. To be more roust, firstly we need to define more cleary the purpose of text mining analyses. Then we need to categorize industry trend key words in a more systematic way using systems thinking models. With these improvements, we are quite sure that applying text mining tools to analyzing industry trends will contribute to predicting the future industry trends as well as to identifying the unseen trends otherwise.

• The Mathematical Education
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• v.58 no.4
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• pp.483-505
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• 2019

Across the world, there is a movement to incorporate computational thinking(CT) into school curricula, and math is at the heart of this movement. This paper reviewed the meanings of CT based on the point of view of Jeanette Wing, and the trend of domestic and international studies that incorporated CT into the field of mathematics education was analyzed to provide implications for mathematics education and future research. Results indicated that the meaning of CT, defined by mainly computer educators, varied in their operationalization of CT. Although CT and mathematical thinking generally have common points that are oriented toward problem solving, there were differences in the way of abstraction that is central to the two thinking processes. The experimental studies on CT in the field of mathematics education focused mainly on the development of students' cognitive capacities and affective domains through programming(coding). Furthermore, the previous studies were mainly conducted on students in school, and the studies conducted in the context of higher education, including pre-service and in-service teachers, were insufficient. Implications for mathematics teacher educators and teacher education as well as the relationship between CT and mathematical thinking are discussed.

• Research in Community and Public Health Nursing
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• v.15 no.2
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• pp.228-236
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• 2004

Purpose: This study attempted to see the trend of researches in nursing old people. Method: We analyzed a total of 105 articles that were published in The Journal of Korean Community Nursing, J. Korean Community Health Nursing Academic Society. The J. of Korea Acad. Soc. of Home Care Nursing from 1987 to June 2003. Result: 1. It was found that researches on old people nursing had increased every year since 1995 and most largely in 1995$\sim$1999. 2. It was known that the majority of researches were designed to be non-experimental and their subjects were old people over 65 living at home. 3. Nursing interventions used in experimental studies were music therapy and various health promotion programs. 4. Major research concepts are physical activities, mental health, physical health, medical management, social health, quality of life and family health. Conclusion: The number of studies has increased in community nursing journals, but there have been not many studies about polices and management for old people living in community society and suggestions of practical alternatives. Thus it is necessary to carry out more community nursing studies about management and education for old people.

• Journal of Digital Convergence
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• v.18 no.9
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• pp.433-440
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• 2020

The purpose of this study is to analyze the research trend by conducting a systematic review of domestic research on clinical fieldwork in occupational therapy. From 2000 to 2019, papers registered in the Google Scholar, RISS, KISS, and National Library of Korea databases were searched. The search term was "Occupational Therapy" AND "Clinical Fieldwork", and a total of 8 studies were finally selected. As a result of analyzing the research trend, the most frequently used data collection method were surveys 6 studies(75.0%), and the most frequent subject were occupational therapy students was 6 studies(75.0%). The most frequent main theme was satisfaction of clinical fieldwork 4 studies(50.0%). In the future, it was confirmed that quantitative and qualitative growth of clinical research related to occupational therapy in Korea is needed.