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H-다리우스 블레이드의 형상 변화에 따른 기동특성 해석
정진환,강기원,김범수,이장호,Jeong, Jin-Hwan,Kang, Ki-Won,Kim, Berm-Soo,Lee, Jang-Ho 한국유체기계학회 2011 한국유체기계학회 논문집 Vol.19 No.3
This paper describes the numerical analysis of effect of geometric variation on the straight-bladed vertical axis wind turbine. Geometry variation is performed with pockets on the blades. The results presented in this numerical analysis show the general flow pattern of near the bladed, and azimuth angle variation on stating torque value. It is shown that the pockets makes torque higher about 80%.
정진환(Jeong, Jin-Hwan),이창식(Lee, Chang-Seek) 한국산학기술학회 2012 한국산학기술학회논문지 Vol.13 No.1
본 연구는 다문화가정 부부 108쌍을 대상으로 여성결혼이민자의 삶의 만족과 관련 변인간의 상관관계와 삶 의 만족에 영향을 미치는 변인을 파악하고자 하였다. 본 연구는 2011년 5월부터 8월까지 4개월에 걸쳐 진행되었다. 본 연구의 결과는 다음과 같다. 첫째, 여성결혼이민자의 삶의 만족 및 희망은 남편의 희망 및 삶의 만족과 정적 상관 관계를 보였고, 부부갈등과는 부적 상관관계를 보였으나 남편의 부부갈등은 유의미한 상관이 없는 것으로 나타났다. 둘째, 여성결혼이민자의 삶의 만족에 영향을 미치는 변인은 여성결혼이민자의 주도사고와 남편의 삶의 만족으로 나타 났으며, 그 중에서 희망의 주도사고가 가장 영향력 있는 변인이었다. 본 연구는 다문화가정 부부의 자료를 활용하여 여성결혼이민자의 삶의 만족과 희망, 그리고 부부갈등에 대해 처음으로 관심을 가졌으며 이러한 결과는 다문화가정의 안정을 위한 기초자료로 활용할 수 있다는데 큰 의미를 두고자 한다. This study aimed at identifying the correlation of satisfaction with life and related variables, and the variables influencing the satisfaction with life of women immigrants. The subjects for the study were 108 couple of multicultural families. The main results were as follows. First, women immigrants’ satisfaction with life and hope were positively correlated with husbands’ hope and satisfaction with life, and negatively correlated with marital conflict. But there were no significant correlation with marital conflict. Second, the result of regression analysis showed that predictors influencing satisfaction with life of women immigrants were women immigrants’ agency thinking and husbands’ satisfaction with life.
정진환 ( Jin Hwan Jeong ),이창식 ( Chang Seek Lee ) 한국농촌지도학회 2011 농촌지도와 개발 Vol.18 No.1
As multicultural family gradually increased, our society is changing towards multicultural society. This study tried to identify the factors related with social distance of adolescent of multicultural family. The participants were 568 middle school students living in S city, D and H county in Chungnam province. Data for the study were analyzed by frequency, mean comparison, correlation and regression analysis. The study results were summarized as follows. First, there were significant differences in social distance according to gender, school record, and place of residence. Second, there were significant differences in social distance according to degree of intimacy between general adolescents. Third, as a result of correlation analysis, the lower self-esteem was, the lower value orientation was, the lower cultural diversity was; the higher social distance is. Accordingly, social distance for adolescents had negative correlations with self-esteem, value orientation, and cultural diversity. Fourth, variables affecting social distance were gender, school record, family composition, place of residence, friend from multicultural family, intention to be a friend, experience of overseas travel, self-esteem, value orientation, cultural diversity. Among them, intention to be a friend was a main predictor.
건물 일체형 태양광 발전시스템(BIPV) 지붕의 화재 성능 분석
정진환(Jeong Jin-Hwan),최원석(Choi Won-Seok),서형민(Seo Hyung-Min),임보혁(Lim Bo-Hyuk) 한국태양에너지학회 2023 한국태양에너지학회 논문집 Vol.43 No.6
Currently, fire tests for building integrated solar modules and fire tests for roof materials are managed separately. Thus, it is necessary to establish an appropriate test method for a building integrated photovoltaic (BIPV) system for the roof because the roof BIPV system has both of these characteristics, i.e., solar modules and building materials. In this research, two types of roof BIPV systems (with solar modules, without solar modules) were tested and analyzed for their fire performance, respectively. Fire tests were conducted based on KS F2257-1 and KS F2257-5. The results showed that the system with the module has weaker fire resistance performance than the system without it.