• Proceedings of the KIEE Conference
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• 1994.07b
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• pp.1540-1542
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• 1994

This paper describes an experimental study of pattern recognition of partial discharge for three different discharge sources by using neural network(NN) system. The NN system is three layer feedforward connections and its learning method is a backpropagation algorithm incorporating an external teacher signal. Input information for NN is a statistical parameters of a discharge magnitude and the number of pulse count. After learning three typical input patterns, NN system offers good discrimination between different defects.

• Journal of Engineering Education Research
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• v.15 no.6
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• pp.9-18
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• 2012

The purposes of this article are to analyze the conditions of using instructional strategies and using gender sensitive instructional strategies at engineering classes of K University. Qualitative analysis methods were adapted. To achieve the purposes, 35 hours of engineering classes from 11 professors from 9th to 20th of November 2009 were videotaped and analyzed. The research findings were discussed by the checklists for general and gender sensitive the instructional strategies which were recommended for the managing the better classes. Students are influenced by professors not only knowledge and skills but also values and attitudes. Professors who take gender sensitive instructional strategies are expected to give good influence the women students.

• East Asian mathematical journal
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• v.31 no.2
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• pp.245-273
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• 2015

The purpose of this study is to investigate environmental factors that affect mathematics learning of students in multicultural families. For this study, as study subjects, eight elementary school students and one middle school student, who were born and grew up in multicultural families in Korea due to international marriage of Korean father and foreign mother, and their five mothers were selected. To examine factors affecting mathematics learning and interests of students in multicultural families, relationships with parents, friends, and teachers were surveyed, and mathematics attitude test was performed. After conducting one on one interview based on collected questionnaires and results of the attitude test, qualitative data analysis was performed. As a result of survey and interview, positive factors affecting mathematics learning of students in multicultural families included arousing interest in mathematics through mother's mathematics teaching in her mother language and direct teaching, good peer relation, teacher's compliment and encouragement, and lowering the burden of language in accordance with characteristics of mathematics course.

• Journal of Korean Elementary Science Education
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• v.23 no.2
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• pp.110-115
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• 2004

This study investigated the effects of the project approach in science teaching on scientific knowledge and attitudes, science related attitudes of the 6th grade students. Students engaged in the study were divided into comparison group and experimental group. The project approach was applied to the experimental group with various activities while the traditional teaching method was applied to the comparison group with science text book and teacher's guidebook. The data were statistically analysed by SPSS WIN 8.0. The results are as follows: The students of the project approach in science teaching made significant progress in scientific knowledge and attitudes, science related attitudes (p<.05). The students in the project approach was more effective in improvement of curiosity, critical thinking, positive thinking than the traditional teaching method. And the project approach was good for causing interest and helping student's science learning.

• International Journal of Concrete Structures and Materials
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• v.7 no.4
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• pp.295-301
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• 2013

This paper deals with the interfacial effects of silica fume (SF) and styrene-butadiene rubber (SBR) on compressive strength of concrete. Analyzing the compressive strength results of 32 concrete mixes performed over two water-binder ratios (0.35, 0.45), four percentages replacement of SF (0, 5, 7.5, and 10 %) and four percentages of SBR (0, 5, 10, and 15 %) were investigated. The results of the experiments were showed that in 5 % of SBR, compressive strength rises slightly, but when the polymer/binder materials ratio increases, compressive strength of concrete decreases. A mathematical model based on Abrams' law has been proposed for evaluation strength of SF-SBR concretes. The proposed model provides the opportunity to predict the compressive strength based on time of curing in water (t), and water, SF and SBR to binder materials ratios that they are shown with (w/b), (s) and (p).This understanding model might serve as useful guides for commixture concrete admixtures containing of SF and SBR. The accuracy of the proposed model is investigated. Good agreements between them are observed.

• Journal of Fisheries and Marine Sciences Education
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• v.29 no.2
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• pp.436-446
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• 2017

This study was performed to verify the validity and utility of the Korean Behavior Rating Inventory of Executive Function-Preschool Version(BRIEF-P). The BRIEF-P is one of the most used instruments to measure Executive Function(EF) and a teacher-rating assessment method designed to measure the executive function of preschoolers(age 2-5). A total of 200 preschoolers(104 boys, 96 girls; recruited aged 3 to 5years) participated. Confirmatory factor analysis was carried out to evaluate the model structure. Correlation analysis was done to verify the concurrent validity. In the results, the model fit indexes were good with the five BRIEF-P subscales (that is, inhibit, shift, emotional control, working memory, plan/organize). The internal consistency of the BRIEF-P five subscales were supported. As a results, the Korean Behavior Rating Inventory of Executive Function-Preschool Version(BRIEF-P) was confirmed to be a reliable and valid assessment tool to measure executive function in preschoolers.

• Philosophy of Education
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• no.49
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• pp.235-270
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• 2013

The aim of this study is to make clear the significance of art education for solving problem in elementary and secondary school. These days, our students have so many negative problems in school and society, for example, school violence, group teasing, group outcasts, arrogate teacher's authority, school collapse, dehumanization get soused excessive and such like. We must support to make humanization through a normal art education and art class. Art, music, physical and literature education is a good methods for human education and mental therapy. The best art education is enlightening the children's imagination and curiosity. To enlighten. in art class at the school, teachers must think about enlightening the children's imagination and curiosity. Aesthetic experience includes creative activities and appreciative activities for human formation. The school must expend effort to increase the art class in each week, because students can change positively in aesthetic experience and aesthetic environment.

• 중국학논총
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• no.71
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• pp.83-106
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• 2021

South Korean users of second language have been often heard such assessments as "you don't' have confidence" and "your writing is good, but your speech is poor." Some scholars have pointed out the teaching method as the cause. In other countries, the mainstreamargument is that students can have practical language experience in a more liberal atmosphere through small group-oriented classes rather than through teacher-centered whole-group activities in foreign language curriculums. Many teachers are using various learning tools or a combination of different teaching methods to minimize the shortcomings of the grammar translation method. However, unlike other studies, the present study focuses on improving the grammar translation teaching method itself.

• Journal of Korean Home Economics Education Association
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• v.20 no.4
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• pp.173-186
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• 2008

This study aimed to examine the operation of the Home Economics education courses in the graduate schools of education, and to find out how graduate students perceive them. Data were collected with the use of handbooks issued by 11 graduate schools of education located in Seoul, and through telephone conversations with the administrative staff. To determine how graduate students majoring in Home Economics perceive their Home Economics courses, a survey was conducted among the graduate students in 10 graduate schools of education, and a total of 131 accomplished questionnaires were used for data analysis. The results of the study are as follows. First, all 11 graduate schools aimed to retrain their teachers, enhance their professionalism, and produce home economics education experts. The Home Economics Education courses come in two strands; a teacher's course and a major course. Most of the schools require a total of 30 credits. All Schools lack professors. Only 3 graduate schools have a home Economics Department in the College of Education. All graduate schools are offering a teacher's course based on a teacher's certification system. In a major course, Home Economics education has the largest number of subjects, with Clothing and Textiles and Food and Nutrition being given greater emphasis, and Consumer Economics, Home Economics Management, Child Care, and Family and Housing Studies being given less emphasis. Second, they mostly regard the graduate school of education as producer of experts, followed by producers of teachers and teacher re-trainers. Those who were majoring in Home Economics Education in college, and the teachers, are more interested in teacher re-training, while the non-teachers and those who were not majoring in Home Economics Education are more interested in producing teachers. They are less satisfied with the operation of the graduate school of education. But they are generally satisfied with the Home Economics Education course. Graduate students registered the lowest satisfaction with a major course, especially experimental subjects. For a teacher's course, the graduate students who are not teachers exhibited higher satisfaction, whereas the teachers showed lower satisfaction. But teachers registered more satisfaction with the practical use of major subjects in the educational field, thinking that their major was a big help in their work at a school. As for what has to be improved with regard to the Home Economics Education course, many cited the necessity of securing a good faculty and expanding the major subjects.

• Journal of the Korean School Mathematics Society
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• v.20 no.4
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• pp.387-404
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• 2017

In this paper, in the last 4 years(2014~2017 school year), we classified the probability and statistical items based on the evaluation scope of the mathematics subject content knowledge which were presented by the Korea Institute for Curriculum and Evaluation, and the classified items were analyzed. As a result, First, in order to induce normalization of the probability and statistical curriculum, four assessment field should be evenly distributed. Second, integrated thinking and comprehensive analytical thinking assessment is required. Third, item an epilogue should be used to measure mathematical thinking and logical competence. Fourth, the ratio of the number of items in probability and statistics to the number of that was 7.7%~10.0%, and the ratio according to the item weighting was 5.0%~7.5%. Fifth, it maintains the policy of stabilizing a good the level of difficulty of the items. Finally, probability and statistical assessment should focus on measuring problem solving ability from an inductive point of view.