• Journal of The Korean Association For Science Education
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• v.38 no.1
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• pp.27-42
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• 2018

This study aims to suggest the conceptual framework for the Nature of Technology (NOT) by examining the current researches regarding the NOT in science and technology education and to analyze the conceptions of experts in science, technology, and engineering fields based on the framework of NOT. The NOT conceptual framework developed in the study consisted of the six domains of NOT, which are 1. Technology as artifacts, 2. Technology as knowledge, 3. Technology as practice, 4. Technology as system, 5. The role of technology in society, and 6. History of technology. Also, the results of analyzing the conceptions for the 30 experts in science, technology, and engineering fields emphasize on the three domains of the 3. Technology as practice, 4. Technology as system, and 5. The role of technology in society among the 6 domains of the framework of the six domains of the NOT framework. This findings are different from the results of previous researches conducted in science and technology education for exploring the conceptions of NOT in the POV of the public and students. As such, the results show that while the public and students possess naive ideas on NOT only focusing on the technology as products and tools, experts in science, technology, and engineering fields possess the authentic views of the NOT reflecting the complex and abstract concepts of technology in terms of the perspectives of philosophy of technology.

• Proceedings of the Korean Magnestics Society Conference
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• 2007.05a
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• pp.157.1-157.1
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• 2007

• International Journal of Advanced Culture Technology
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• v.6 no.4
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• pp.152-157
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• 2018

In the late 19th century and early 20th century, Among those of the Northeast Asia three countries, school physical education and military-style gymnastics of Chosun can be regarded as having been the most nationalistic. The adoption of modern physical education in public schools was from the proclamation of 'the Order on Building the Country through Education by King Gojong in February 1895. This paper intends to examine the process of adopting military-style gymnastics education which played the central role in school physical education in the late Chosun period. But, unlike the common guess that military-style gymnastics in public schools in late Chosun would have been full of patriotism and nationalism, the textbooks and teaching contents of Chosun Military Officers' School were very similar to those of Japan, which is an unexpected fact. Therefore, Chosun decided to accept the Japanese-type military-style gymnastics and military training to improve physical strength of youngsters and military power. The fact that, with the advent of modern education, physical education was emphasized above all else has a very important meaning to the history of Korean physical education. Physical activity education emerged as a major education course which had been unthinkable in previous ages. The second characteristics is that the process of adopting military-style gymnastics and its contents were influenced by Japan Third, even if military-style gymnastics was imported from Japan as part of school physical education course in late Chosun period, its aim was to train military man powers for the independence movement against Japan, rather than to develop harmonious body.

• Korean Journal of Health Education and Promotion
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• v.21 no.3
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• pp.87-100
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• 2004

Objective: This research has been conducted in order to conduct sex education using information and communication technologies (ICT) which is currently taught to elementary school students, understand how this method of education affects the knowledge of and attitude towards sexual health in them, so that it could be actually applied in classrooms. Subject: 115 students were divided into three different groups: a comparison group of 38 students (who were given no sex education at all), control 2 group of 39 students (who were given sex education via video programmes), and control 1 group of 38 students (who were given sex education using ICT). Research Tool: A questionnaire used by the literature studies. After verifying content validity, it was modified and supplemented in this way: sex knowledge was reduced to 26, and sex attitude was also reduced to 11. The reliability of the research tool was Cronbach's a=0.86 for sex knowledge tool, and Cronbach's a=0.81 for sex attitude tool. The collected data have been analysed using SPSS 11.0 program. The content validity was analysed by factor analysis and multiple regression analysis, and hypothesis verification was analysed using repeated measure ANOVA test. Result: 1) In sex knowledge marks, there was a significant difference according to the group (p=.009) and point of time (p=.000), and there was a significant interaction between the groups and point of time(P=.000). As a result, it turned out that both video programmes and ICT were significantly effective in improve the knowledge. 2) In sex attitude marks, there were no significant differences according to the group (p=.213), but there was a significant difference according to point of time (p=.002), and there was a significant interaction between the groups and point of time(P=.018). As a result, it turned out that only the education method using ICT was effective in improving the attitude. Conclusion: From the results of this research, it can be said that the sex education using ICT was the most effective method in improving the sex knowledge and attitude of students at elementary school. Therefore, it is advisable that the sex education methods using ICT should be developed and applied continuously.

• Journal of The Korean Association of Information Education
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• v.8 no.2
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• pp.167-176
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• 2004

Due to the development of information communication technology, educational environment has undergone much change and various types of teaching and learning methods based on information communication technology has been suggested. Recently, remote education using the internet are also spreading. However, in current classrooms, students are asked to do an teacher-centered assignment, which they are required to collect and report some information using the internet. This method does not help students use the advantages of learning using the internet, which stimulate students-students interaction and teacher-students interaction.Thus, this study focused on the problem-based learning system based on video communication technology. The researcher designed the problem-based learning system based on video communication technology and applied the system to classes at elementary school. The results were analyzed in terms of students-students interaction and teacher-students interaction in the internet. This research found that the problem-based learning system stimulates teacher and students communication and has positive effects on students' attitude and interest in learning. This research proposes that the traditional teacher-centered teaching method can be supplemented with cyber space learning, which has the merit of problem-based learning model.

• Journal of Power Electronics
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• v.17 no.5
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• pp.1298-1307
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• 2017

The constant on-time current-mode controlled (COT-CMC) switching dc-dc converter is stable, with no subharmonic oscillation in its current loop when a voltage ripple in its outer voltage loop is ignored. However, when its output capacitance is small or its feedback gain is high, subharmonic oscillation may occur in a COT-CMC buck converter with a proportional-integral (PI) compensator. To investigate the subharmonic instability of COT-CMC buck converters with a PI compensator, an accurate reduced-order asynchronous-switching map model of a COT-CMC buck converter with a PI compensator is established. Based on this, the instability behaviors caused by output capacitance and feedback gain are investigated. Furthermore, an approximate instability condition is obtained and design-oriented stability boundaries in different circuit parameter spaces are yielded. The analysis results show that the instability of COT-CMC buck converters with a PI compensator is mainly affected by the output capacitance, output capacitor equivalent series resistance (ESR), feedback gain, current-sensing gain and constant on-time. The study results of this paper are helpful for the circuit parameter design of COT-CMC switching dc-dc converters. Experimental results are provided to verify the analysis results.

• Journal of The Korean Association For Science Education
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• v.23 no.5
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• pp.443-457
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• 2003

The research aimed to compare science curriculum between Korea and Israel and find out characteristics of science curriculum in Israel at middle school level. The middle school 'science' of the 7th revised national curriculum in Korea and middle school 'science and technology' in Israel were compared. Among characteristics of the Israel curriculum of 'science and technology,' distinct ones are as follows: First, 'science and technology' was most highly emphasized with the largest number of time allotment among all subjects at middle school level in Israel. Second, the contents of 'science and technology' were classified into seven areas of 'energy and interaction', 'materials', 'organism', 'earth and the universe', 'technological systems and products' . 'information and communication',and 'ecosystems' rather than four areas of energy, materials, life and earth in Korea. Third, 'organism' was allocated with the highest number of hours among seven areas. Fourth, objectives of each content of 'science and technology' were divided into three categories: scientific aspect, technological aspect, and social value and objectives of each category were related to one another. This characteristic seems to stress STS, multidisciplinary, and interdisciplinary approaches in 'science and technology' in Israel. Such characteristics of the 'science and technology' education in Israel are likely to make significant contributions to establish human resources of highly developing science and technology including IT, BT, NT, ST in the future society. Reflecting upon the characteristics of 'science and technology' education in Israel, Korea might seek for ways to improve its national power based on science and technology through strengthening science and emphasizing science and technology contents among school curriculum.

• Journal of the Korea Fashion and Costume Design Association
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• v.16 no.4
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• pp.137-156
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• 2014

This study focuses on the middle school textbook Technology Home Economics 2, revised in 2009, and aims to analyze the clothing-related contents within the Technology and Home Economics curriculum. All Korean elementary, middle and high school curricula have evolved through a number of changes and repeated revisions from their first versions, and reached their current seventh revised edition in 2009. Over this process, subjects connected to home economics have formed the following structure: Practical Courses in elementary school (5thand6thgrade)and Technology and Home Economics in middle and high school. The curriculum contents of the subjects Technology and Home Economics are divided into Development and Family, Clothing, Dietary Life, Habitation, Home Management and Consumption. Each curriculum teaches the students about its respective contents, e.g. Clothing brings the students in contact with clothing-related matters. Curricula and education methods help students find their own interests during middle and high school. Their school studies determine what majors they are seeking to choose in college and university. There are diverse university programs in Korea that are related to clothing. The above-mentioned textbook deals with clothing in the chapter Eco-friendly Clothing and Mending Habits. The results of this analysis shall help the development of the constantly changing textbook curricula, and furthermore become a reference to middle and high school students who aspire a practical and creative clothing education.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.51 no.2
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• pp.188-194
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• 2015

The powered purse seine fishery is an important fishery accounting for 19.4% of adjacent water fishery production in Korea, and the commercial fishing is associated with high rate of fatal and non-fatal occupational injury. The hazard analysis for the fishermen's safety of offshore large powered purse seiner was conducted to serve as a basic data for improving the healthy and safe working environment of fishermen using fishermen's occupational accidents of the national federation of fisheries cooperatives (NFFC) in 2013 (n=583). As a result, the occupational accident occurrence rate of this fishery was 182.6‰ in all industries 30.9 times the rate of that. In addition, death and missing rate was found to have a very serious level management to 25.1‰ in all industries of death of 17.5 times. The accident occurred in 72.3 to 85.8% was happened at sea. The others, slipping and struck by object etc occurred more frequently in order in the frequency of accident occurrence pattern. However, the occurrence rate of death and missing did not match the frequency of accident pattern. In other words, slipping occurred frequently higher while death and missing risk was not high. And the contact with fishing gear and fall in the waters was low while death and missing risk was high. The results are expected to contribute for identification and assessment of safety hazard occurred in offshore large powered purse seiners.

• Journal of Korean Home Economics Education Association
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• v.9 no.1
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• pp.39-52
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• 1997

The purposes of this study are 1) to identify the position and the problems of Home Economics in Elementary School, and 2) to propose orientation for the future curriculum revision. Elementary Home Economics, historically, has been partially practiced as a part of Practical Arts Education. As a results, the nature of Home Economics Education has been distorted and lacked the disciplinary consistency with Middle School Home Economics Education： the curriculum of Home Economics Education ignored the importance of the understanding family life as well as underscored the technical skills. The identified status and problems has on implication for the subject’s further development. The propositions for Elementary Home Economics Education which has the original intention, are as follows：(1) the curriculum of Practical Arts Education must be built on theorectical base and criteria. (2) the name of subject, Practical Arts Education, must be changed to [Technology$.$Home Economics]. (3) the contents of the subject must be practical which to promote motivations and interest of students.