• Journal of Astronomy and Space Sciences
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• v.23 no.1
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• pp.55-70
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• 2006

There are many astronomical records of comets in Korean history books. We collected those of the comet that appeared in the winter of the year 1664. These records were written in Daily Reports of the Royal Observatory on Astronomical Events (星變測候單子), Final Reports of the Royal Observatory on An Astronomical Events (天變謄錄), the Daily Records of the Royal Secretariat of the Joseon Dynasty (承政院日記), and the Chronicle of the Joseon Dynasty (朝鮮王朝實錄). We used the Olbers' method for determination of preliminary orbit of the comet, and compared the result with the previous researches. In the Oblers' method the orbit is assumed to be parabolic (e=1). We obtained the following orbital elements: perifocal distance q=1.07\pm0.008AU, perifocal passage time $T=2329165.50\pm0.72$ days, argument of the perifocus $\omega=318^{\circ}.2\pm2^{\circ}.29$, longitude of ascending node $\Omega=85^{\circ}.23\pm2^{\circ}53(J1665)$(J1665), inclination $i=160^{\circ}.28\pm1^{|circ}.56$.

• The Journal of Korean Association of Computer Education
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• v.22 no.3
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• pp.135-146
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• 2019

Big data analysis is actively used for collecting and analyzing direct information on related topics in each field of society. Applying big data analysis technology in education field is increasingly interested in Korea, because applying this technology helps to identify the effectiveness of education methods and policies and applying them for policy formulation. In this paper, we propose our approach of utilizing big data analysis technology in education field. We focus on free semester program, one of the current core education policies, and we analyze the main points of interests and differences in the free semester through analysis and visualization of texts that are written on the operation reports prepared by each school. We compare regional differences in key characteristics and interests based on the free semester operation reports from middle schools particularly at Seoul and Gangwon-do regions. In conclusion, applying and utilizing big data analysis technology according to the needs and requirements of education field is a great significance.

• The Journal of Internal Korean Medicine
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• v.42 no.1
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• pp.53-66
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• 2021

Objective: The purpose of this study was to collect and evaluate evidence of herbal medicine treatments for the residual effects of COVID-19. Methods: Nine electronic databases, namely PubMed, Science Direct, CINAHL, CNKI, Wanfang, J-STAGE, CiNii, OASIS, and Science ON, were searched with the following keywords: 'COVID-19'; 'sequelae'; 'Convalescence' for 'P (Population)' and 'Medicine, Chinese Traditional'; 'Korean medicine'; 'Herbal medicine' for 'I (Intervention)'. For the selected studies, various clinical data were extracted including patient symptoms, pattern identification, herbal medicines prescribed, and treatment results. Results: A total of nine clinical studies were identified (two case control trials; one case series; and six case reports). Various residual symptoms had been detected in the recovery stage of COVID-19 with the most commonly used pattern identifications being deficiency in both lung and spleen and in both qi and yin. Any herbal medicine prescriptions were written using these patterns. We found several reports of the positive effect of herbal medicines in that it improved symptoms, lung function, and lung inflammation. No adverse events were reported. Conclusions: The results indicate that treatment with herbal medicines has a possible therapeutic effect on the residual symptoms of COVID-19. Large-scale studies are necessary to confirm the effectiveness of these approaches.

• The Journal of the Convergence on Culture Technology
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• v.7 no.1
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• pp.66-74
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• 2021

This study was conducted to identify the trends in newspaper articles related to nurses reported after the COVID-19 pandemic, and analyze the image of nurses in newspaper articles. The target of analysis is 199 articles related to nurses reported in four major domestic newspapers for 10 months from January 2020 to October 2020, when the domestic COVID-19 pandemic in full swing. As a result of the analysis, compared to the past, the volume of reports of articles related to nurses increased, and there were many articles on the topic of nurses being treated poorly compared to work, having a sense of vocation and caring for patients. There were many reports of articles that were favorable or neutral, and most of them were reporters, but few were written by professional reporters or medical personnel including nurses. Unlike previous studies, the proportion of nurses in nurse-related articles was often treated as the main character. Both the nursing and the media should make systematic and continuous efforts to ensure that accurate descriptions of the various roles and activities of nurses appear in the newspaper.

• Research in Mathematical Education
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• v.18 no.4
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• pp.237-256
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• 2014

This paper reports findings from a written assessment which was designed to investigate Chinese primary school students' understanding of the equal sign and equation structure. The investigation included a sample of 110 Grade 3, 112 Grade 4, and 110 Grade 5 students from four schools in China. Significant differences were identified among the three grades and no gender differences were found. The majority of Grades 3 and 4 students were found to view the equal sign as a place indicator meaning "write the answer here" or "do something like computation", that is, holding an operational view of the equal sign. A part of Grade 5 students were found to be able to interpret the equal sign as meaning "the same as", that is, holding a relational view of the equal sign. In addition, even though it was difficult for Grade 3 students to recognize the underlying structure in arithmetic equation, quite a number of Grades 4 and 5 students were able to recognize the underlying structure on some tasks. Findings in this study suggest that Chinese primary school students demonstrate a relational understanding of the equal sign and a strong structural sense of equations in an earlier grade. Moreover, what found in the study support the argument that students' understanding of the equal sign is influenced by the context in which the equal sign is presented.

• Journal of The Korean Association For Science Education
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• v.32 no.1
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• pp.1-14
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• 2012

The purpose of this study is to analyze the student's modeling patterns of modeling experiments. The 1st year students who were taking the general chemistry laboratory course performed three modeling inquiry experiments and submitted laboratory reports. Students expressed the model in a formula form and/or a written form. Student's modeling patterns could be classified by five types; 'Refining tentative modeling', 'Accepting alternative modeling', 'Discarding tentative modeling', 'Failing to find causes', 'Disbelieving results'. This modeling experiment provides for students the opportunity for understanding how a scientific model is created and what the nature of scientific modeling is.

• Korean Journal of Occupational Health Nursing
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• v.7 no.2
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• pp.130-135
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• 1998

To investigate the working characteristics of the workers by place of duty, a study was carried out among 591 male workers aged 20-55 employed in an automobile industry in Korea. Workers participated to this study were divided into low back pain(LBP) and control group, according to the self-reports by written questionnaires. Work factors and complaint rates of low back pain were compared to the work places. The results were as follows ; 1) The complaint rates of low back pain were 49.2%(292 men) as a whole, 58.6%(34 men) in Production Control Department I, 50.2%(120 men) in Stamping Tool Department, 46.9%(138 men) in Bus Department. 2) Lifting and earring work of individual workers were directly associated with low back pain. Frequency of lifting and carring work is higher in the Final Body Section(Production Dept. I) and Body I Section(Bus Dept.). 3) LBP group were more frequently involved in working in awkward position(Quality Control Section of Stamping Tool Dept.), bending(Body I Section of Bus Dept.) and twisting posture(Sash Section and Body I Section of Bus Dept.). 4 )Workers exposed to vibration during working shows the higher complaint rate of low back pain.

• The Mathematical Education
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• v.51 no.2
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• pp.131-144
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• 2012

The purpose of this study is to investigate the change of mathematics pre-service teachers' teaching behaviors in microteaching. This study is organized along the following lines: 1) mathematics pre-service teachers conduct twice microteachings, 2) the microteaching recordings and lesson observation reports written by pre-service teachers are analyzed. Through reviewing the first microteaching, pre-service teacher have reviewed and found out improvements of their teaching. In the second microteaching, pre-service teachers' teaching behaviors have been positively and effectively changed with respect to teaching methods, proposal of learning objectives, prior knowledge usage, presenting lesson's content, concise descriptions, brief language usages, multimedia, and appropriate questions. However, they frequently used inappropriate expressions from their unconscious habits. Therefore, the educational institutions should provide opportunities involved in well-structured microteaching training program with pre-service teachers, which in turn, help pre-service teachers to have more positive teaching competence.

• Transactions of the Korean Society of Pressure Vessels and Piping
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• v.10 no.1
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• pp.70-74
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• 2014

An Operating Experience Report(OER) has written about events and accidents happened at a Nuclear Power Plant(NPP). The purpose of publishing the OER is to prevent the similar event or accident repeatedly by spreading the experience of a single plant to other plants personnel. In this paper, it is analyses that the foreign NPPs' OERs on JIT published by the International Nuclear Agency(WANO, INPO, COG, BE). The analysis introduced in this paper is performed along with the various factors such as type of work, root-cause, and equipment. The root-cause analysis about the OERs shows that the Human-error is the major factor in foreign NPPs, but on the other hand equipment problem is the main part of the Domestic NPPs. The ratio of the foreign NPP's OERs on JIT according to the type of work was applied to KHNP-JIT developed nowadays for the first time in KOREA.

• Journal of Fisheries and Marine Sciences Education
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• v.15 no.2
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• pp.154-165
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• 2003

Fisheries and shipping industry as national basic industry need continuous growth and basic human resource development for international competition. This study was carried out through investigating of the related literature and reports. The purpose of study for developing direction and subject matter of curriculum in the fisheries marine science high school was as follows. Recently, reforms of vocational high school will expand professionalization and specialization. Therefore systematic curriculum of basic knowledge, basic skill and technical is required more and more in field work of fishery and merchant marine. The other important factors of curriculum improvement were cooperative role between school and local industry, adaptation of basic ability, job analysis, various curriculum opening. Above all, teachers of fisheries and merchant marine high school require advanced consciousness and must participate in revising curriculum. And the textbook of fisheries and merchant marine high school is useful to improve the level of learning ability degree and must be written by the related teacher, and the textbook contents must be studied by the expert group under professors leading to advanced discipline and skill of field work.