• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.5
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• pp.2023-2029
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• 2012

The purpose of this study were to identify the effect of Learning Together(LT) on underachiever's academic achievement and learning attitudes. To solve above study purpose, the subject of this study were 20 second-grade underachiever selected from two classes of middle school. The subject classified into two group. In this study, the experimental group were participated in LT method and comparison group were participated lecture-centered instruction. Experimental period were 8 weeks. After the experimental treatment, underachiever's academic achievement and learning attitudes carried out post-test. And the results of the data were analyzed by t-test and MANOVA. The results were as follows: A academic achievement and learning attitude of underachiever's through LT method was significantly higher than those learning through lecture-centered instruction. Especially, a self-confidence, success-expect, attention, affection as subordinate variables of learning attitude was significantly higher than those learning through lecture-centered instruction. In conclusion, LT method effect on underachiever's academic achievement and learning attitudes. As observed by the above results, a LT method should be an applicable to underachiever's education program plan as an effective means of enhancing their academic achievement and learning attitudes.

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2018.06a
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• pp.136-136
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• 2018

듀얼 페이즈(DP) 강철과 같은 고강도강(HSS), TRIP강, TWIP강은 무게를 줄이고 자동차의 안전을 향상시키기 위해서 자동차 산업에서 광범위하게 쓰이고 있다. HSS강의 내부식성을 향상시키기 위해서, 향상된 박막 재료와 기존의 아연도금 공정을 대체하는 공정 방법이 필요하다. Zn-Mg 박막은 강의 부식 방지에 대한 강력한 후보이며, 물리적 기상 증착 공정(PVD)은 강의 Zn-Mg 박막의 증착을 위한 유망한 공정이다. 그러나 이전 연구에서 보고 된 바와 같이 Zn-Mg 박막은 Zn-Mg 박막의 높은 취성으로 인하여 Zn 박막에 비하여 접착력이 매우 불충분하였다. 따라서 본 연구에서는 Zn-Mg 박막의 첩착력을 향상시키기 위해 TRIP강 기판 위에 증발 증착법을 활용하여 Zn-Mg/Zn 이중층 박막을 합성하고 진공에서 열처리를 실시하여 박막의 깊이에 따른 Mg의 함량 변화를 유도하였다. Zn-Mg/Zn 박막 합성 시 EMH-PVD를 활용하여 증착하였으며, Zn 중간층을 모재와 Zn-Mg 층 사이에 증착하고 진공중에서 열처리를 실시하여 박막 내에서 Mg 함량의 기울기 변화가 박막의 밀착력에 주는 영향을 평가하였다. 증착된 박막은 FE-SEM을 통하여 미세조직과 박막의 두께를 분석하였고 line-EDS를 통하여 깊이에 따른 Zn와 Mg의 변화를 분석하였으며 XRD를 사용하여 합금상을 분석하였다. Lap shear test를 활용하여 박막의 밀착력을 정략적으로 분석하였다. FE-SEM 및 EDS 분석 결과 Zn-Mg/Zn 박막을 진공에서 열처리를 실시한 후 FE-SEM으로 분석한 결과 미세조직의 큰 차이는 보이지 않았으나, line-EDS 결과 Mg이 확산되는 것을 확인 할 수 있었다. XRD 분석 결과 확산한 Mg에 의해서 Zn상은 감소하고 $Mg_2Zn_{11}$, $MgZn_2$와 같은 합금상은 증가하는 것을 확인하였다. Lap shear test 결과 $200^{\circ}C$에서 열처리한 Zn-15wt.%Mg/Zn 박막의 경우 밀착력이 19 MPa로 열처리를 하지 않았을 경우(11 MPa)보다 향상되는 것을 확인하였다. 이러한 결과는 통하여 Zn-Mg 박막의 두께의 Mg의 함량 변화에 의해서 박막의 밀착력이 변화되는 것을 알 수 있다.

• Journal of the Korean Society of Food Science and Nutrition
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• v.30 no.6
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• pp.1026-1032
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• 2001

Microwave treatment was studied to investigate the antioxidant ability of rice hull and rice bran. The color changes were related to the intensity of microwave and to the treated time on rice bran. However, the electron donating abilities of rice hull and rice bran extract were not much affected by microwave intensity. Rice hull extract treated with a 100 W microwave showed 80% inhibition of lipid peroxidation when fish oil was treated with $H_2O$$_2$. Also inhibition activity against lipid peroxidation in rice hull is more stable than that of rice bran when treated with microwave. Overall, rice hull extract showed better antioxidant activity than rice bran. It seems that rice hull contains higher antioxidant components as well as the browning reaction products having anti-oxidant activity during microwave treatment.

• Journal of Digital Contents Society
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• v.11 no.4
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• pp.513-518
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• 2010

As the number of the deaf who go out into the society has been increasing, in most of the lectures, the demands for the sign language interpretation and the accuracy of the interpretation have become more important. Especially, in order to improve the accuracy of the sign language interpretation, the interpreter must be aware of the appearances of the lecturer and the contents of the lecture, and at the same time, the interpreter must look toward the audience. This research introduces a system which can be effective in a small classrooms or auditorium, by providing the maximum information about the lecturer and the contents of the lecture. Also, in order to verify the effectiveness of the proposed system, this research includes the discussions about the related systems and test methods. In conclusion, delivering the images of the lecturer and the contents of the lecture to the interpreter by employing the proposed system has been proved effective.

• Journal of the Korea Convergence Society
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• v.12 no.12
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• pp.161-167
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• 2021

The purpose of this study is to provide a solution through a methodological approach so that character education can be naturally acquired in team-based learning activities. In the spring semester of 2021, a total of 69 college students in two groups were studied, and as a result of the study, the total score of character education virtues in the post-test was greatly improved in the experimental group (p<.001). The correlation between sub-items of team-based learning and pre and post-test results for character sub-items, self-regulation, consideration, communication, self-esteem, and responsibility, were statistically significant. This study shows character education through team-based learning had positive results. However, future research through a wider range of subjects is needed, and various teaching methods are being applied to propose verification of the effectiveness of character education.

• Journal of the Health Care and Life Science
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• v.9 no.1
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• pp.77-86
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• 2021

This study is a research study to determine the effect of online lecture substitution for subjects due to COVID-19 on self-directed learning ability, academic achievement, and online learning satisfaction of nursing students. From September to October 2020, the final 113 nursing students of data recovered as enrolled in the Department of Nursing at a university located in G City were analyzed. The data collected were analyzed by performing descriptive statistics and hierarchical regression analysis using the SPSS 21.0 program. The study results are summarized as follows. The average score of self-directed learning was 3.32±0.39, academic achievement 3.32±0.75, and learning satisfaction was 3.31±0.78. Factors affecting online learning satisfaction were found to be preferred learning methods and academic achievement. Based on the results of this study, it is necessary to design instruction and operate classes to improve online learning satisfaction by evaluating the learner's learning method in advance when running nursing school subjects as online lectures for nursing students.

• Journal of The Korean Association of Information Education
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• v.24 no.6
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• pp.643-652
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• 2020

Since the 21st century knowledge and information society 20 years ago, online education has been emphasized. Online courses at online universities or universities have been activated in developed countries. But to this day, online lectures have not been activated at education colleges and have been used as supplementary educational materials. Since February 2020, the company has been forced to provide online education due to external factors of the coronavirus. In this study, the results of the results of the first semester of 2020 by organizing the online lectures in the same way as the offline lectures for the 2019 prospective teachers are as follows. Online education can be seen as effective in terms of understanding the achievement criteria, in terms of developing teaching materials, in terms of evaluation data development and evaluation methods, and in terms of students' ability to provide software education.

• Journal of Digital Convergence
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• v.19 no.7
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• pp.341-348
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• 2021

This study identified learners' immersion, focusing on online video education platforms, Zoom and Webex, used in colleges after the 'Covid-19', and suggested design improvement measures to improve immersion. Through prior research and literature research, the components of immersion and screen components of the online distance education platform were identified, and measures to improve immersion were suggested through questionnaire surveys and in-depth interviews. The research method was conducted for 5 days from April 7 to 12, 2021 for 50 college students and graduate students in their 20s and 30s who are receiving online education through Zoom and Webex, and 6 people were interviewed in-depth. As a result of the experiment, the communication between learners and lecturers was deduced as the biggest factor, so a design plan to facilitate communication between learners and lecturers was proposed based on Gutenberg's diagram. As online video education is predicted to continue even after the Covid-19, continuous online video education immersion research is needed, and we hope that it can contribute to the direction of the research.

• Journal of Science Education
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• v.46 no.3
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• pp.237-254
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• 2022

The purpose of this study is to examine the changes in the science teaching professionalism self-perception of pre-service elementary teacher as shown in science education lesson course. The subjects of this study were 25 pre-service elementary teachers enrolled in the second year at G National university of education. And the scale of this study were derived and applied by modifying and supplementing the scale of previous studies. The results of this study are as follows: it was found that science teaching professionalism and self-perception of pre-service elementary teachers are improving. In short, it was found that there are significant changes in all sub-domains such as professionalism development efforts, educational contents, instructional method, educational environment and atmosphere, assessment and science teaching preference. As a result of examining the related contents in detail along with the combustion-related science lesson plan, Padlet, and post-test descriptive question responses, there were some good categories and some categories that needed to be supplemented. Based on these results, a plan for enhancing the science teaching professionalism of pre-service elementary teacher needs to be considered.

• School Mathematics
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• v.5 no.3
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• pp.275-295
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• 2003

This study intends to understand the practice of elementary school mathematics education, focusing on the teaching and learning methods. To achieve these goals, we reviewed and analysed instructional methods pertaining to both (general) pedagogy and mathematics education. And we designed and implemented a questionnaire survey regarding the elementary school teachers' opinions. Moreover, we observed several mathematics lessons of elementary school to understand better the practice of teaching and learning. From these survey and observation, we learned several important aspects of investigation and development of instructional methods.