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김한호(Han Ho Kim),권재술(Jae Sul Kwon),김범기(Beom Ki Kim) 한국초등과학교육학회 1994 초등과학교육 Vol.13 No.2
The purpose of this study was to investigate Korean children`s(1∼5th) conceptions about sound: the production of sound, the transmission of sound. Using interview, data were collected from 80 children, and analysed by category schemes. The major findings of this study were as follows: 1. Younger children thought that sound production was often attributed to the impact or to the properties of the object. 2. Sound transmission was not an idea which was expressed by many children. Some children considered sound to travel through the string on the string telephone, or through air, but what was meant by `air` was often unclear. Sometimes, they regarded sound as a different kind of matter. 3. A notable feature in children`s conceptions on sound was context-dependent.
발견수업모형과 가설검증수업모형에 대한 이론적 분석과 현장 적용 연구
김한호(Han Ho Kim),권재술(Jae Sul Kwon) 한국초등과학교육학회 1995 초등과학교육 Vol.14 No.2
The researcher tried to find out the similarities as well as the differences between Discovery Teaching Model(DTM) and Hypothesis-Testing Model(HTM) in light of their philosophy, aims and assumptions, supporting psychology, the procedures used in the classroom teaching, social system, and support system. With this theoretical analyses and comparisons of the teaching models, the researcher investigated the effectiveness of the models by the classroom applications. For the classroom applications, four classes were sampled from two elementary schools. The design of research was nonequivalent control group pretest-posttest design. The intervention for the experimental groups were 12 weeks. The results of the classroom application were analysed in light of students concepts, science inquiry skills, attitudes towards science. As the result of theoretical analyses, the models were basically similar in emphasizing pupils` meaningful learning; however, they were different in their aims, procedure of classroom teaching, social system, and support system. The results of the classroom application showed that DTM was effective in the development of science concepts, the scientific methods, and attitudes towards science. HTM was effective for improving in science process skills.
가스터빈용 열교환기의 주름진 덕트에서 종횡비 변화가 열전달 특성에 미치는 영향
김한호(Han Ho Kim),황상동(Sang Dong Hwang),조형희(Hyung Hee Cho),최재호(Jae Ho Cho),전승배(Seung Bae Jeon) 한국유체기계학회 2001 유체기계 연구개발 발표회 논문집 Vol.- No.-
The present study investigates convective heat/mass transfer and flow characteristics in wavy ducts of primary surface heat exchanger. Experiments using a naphthalene technique are carried out to determine the local transfer characteristics for flow in the corrugated wall duct. The aspect ratios of the rectangular duct cross-section are 7.3, 4.7 and 1.8 with a corrugation angle of 145°. The Reynolds numbers, based on the duct hydraulic diameter, are ranged from 1000 to 5000. The local heat/mass transfer measurement is conducted in the spanwise directions. The results show that Tayler-Gortler vortices exist on the pressure surface. Flow separation on the suction surface appears at a high Reynolds number resulting in a sharp decrease in the local transfer rates, but relatively high transfer rates are obtained in the reattachment region.
청소년 인성교육을 위한 위드 폴(K-CSI) 직업체험 효과성 검증
김한호 ( Kim Han Ho ),김상인 ( Kim Sang In ) 국제뇌교육종합대학원 인성교육연구원 2018 인성교육연구 Vol.3 No.1
본 연구는 과학수사 직업체험인 위드 폴(K-CSI) 청소년 직업체험활동을 통해 청소년 범죄를 예방하고 대안적 인성교육 방법으로 모색하는데 그 연구의 목적이 있다. 본 연구의 목적을 달성하기 위해 청소년 범죄예방 교육을 위해 제작된 법 교육 웹툰 동영상을 시청하였다. 동영상의 내용은 사례 중심의 청소년 범죄 예방 내용이다. 동영상을 시청한 청소년 1,542명이 설문조사에 응답하였다. 본 연구의 결과는 응답자 88%가 긍정적인 설문 응답을 하였다. 연구결과는 범죄의 형사처벌에 대한 인식강화, 범죄예방 효과, 비행청소년 대한 부 정적인 시각, 윤리의식 함양, 범죄행위에 대한 부정적인 인식, 범죄 행위 검거 실효성 인식에 대해 긍정적으로 나타났다. 본 연구의 결론을 제시하면 다음과 같다. 첫째, 청소년 범죄 예방을 위해 긍정적인 부분에서 인성교육 프로그램 개발 및 적용 방안을 모색할 필요가 있다. 둘째, 청소년들이 경험적으로 인식할 수 있는 범죄예방 프로그램을 개발하고 적용할 기관이나 단체가 필요하다. 셋째, 청소년 범죄예방은 가정과 학교와 지역사회가 연대하여 지속적인 관심과 지원이 필요하다. The purpose of this study is to prevent teen crime through cultivating compliance law and improving legal attitude. The method of study was watched video of web - toon which was prepared for the prevention of juvenile crime. The content of the video is case-based prevention of juvenile crime, adolescents 1,542 who watched the videos responded to the survey. Survey results are expressed in percentages and tables. About 88 percent of the respondents answered positively. The results of the study showed that positive attitudes toward criminal punishment of crime, crime prevention effect, negative view of delinquent adolescents, ethical awareness, negative perception of criminal behavior, and perceived effectiveness of criminal behavior were positive. This program proposes to participate as a youth for the whole country.
김한호(Han Ho Kim) 한국농업경제학회 2001 農業經濟硏究 Vol.42 No.3
This study investigates the export price responses to exchange rate movements in the major Korean Ginseng exporting markets. Three major exporting markets(U.S.A., Japan, Hongkong) to which six major Korean Ginseng products are exported were compared with each other by estimating exchange rate pass-through coefficients through Stock-Watson`s DOLS method. The estimated effects varied with the markets and with the products, and were relatively high compared to those estimated by other similar studies on manufactured products. In general symmetric effects of exchange rates on export prices between appreciation and depreciation periods were revealed, which is also quite different from the results of the studies on manufactured products reporting asymmetric effects in general.