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전기적 스트레스에 따른 Offset 구조를 갖는 n-채널 다결정 실리콘 박막 트랜지스터의 특성 분석
변문기,이제혁,임동규,백희원,김영호 한국전기전자재료학회 2000 전기전자재료학회논문지 Vol.13 No.2
The effects of electrical on n-channel offset gated poly-Si TFT's have been investigated. It is observed that the electrical field near the drain region in offset devices is smaller than that of conventional device by simulation results. The variation rate of threshold voltage and subthreshold slope decrease with increasing the offset length because of lowering the electric field near the drain region. The offset gated poly-Si TFT's have been probed effective in reducing the degradation rate of device performance under electrical stressing.
부산시 都市 어메니티 構造의 解釋에 關한 硏究 (Ⅰ) : 海岸型을 中心으로 Seascape Type
金承煥,邊文箕,楊偉周 동아대학교 환경문제연구소 1990 硏究報告 Vol.13 No.1
A Study on the method of evaluating the urban amenity structure in Pusan city was established. Taejong-dae and Haeun-dae, tourism and landscape areas for survey sites were selected as a seascape type. Amenity elements made up of each space by region were abstracted form the Semantic Differential method. According to the factor analysis on the basis of SD scale values, Kaiser's measure of sampling adequacy for 24 variables in 0.709 and very high. Four factors including pleasantness, health, convenience and safety showed 58.03 percent for total variance. By dint of multiple regression, the model is as follows : Y=5.0895+0.1994·X_(10)+0.2107·X ₁₁-0.3998·X_(16). All variables in the model were significant at 0.001 level. Cognitive structure of amenity depended on 4 variables-「straight-up-unprincipled」「clean-dirty」 and 「continuous-discontinuous」. According to the result of regression on satisfaction, the variables of satisfaction affecting amenity are the quality of green space and the harmony with the surroundings. The abstracted results of amenity elements are revealed as natural environments including sea, sands and rocks, and plant elements including woods and flower beds which raised amenity. The elements of social surroundings including cars, a street stall, noise and wastes, and elements of structures including pavement, fence and peddler harmed amenity. I think the consideration on the aboved could improve amenity of each region.
쾌적한 도시환경의 창출을 위한 도시 어메니티 구조에 관한 연구
김승환,변문기 한국조경학회 1991 韓國造景學會誌 Vol.18 No.4
A study on the method of evaluation the urban amenity structure in Pusan city was established. Finally a survey sites out of 41 regions were selected on the basis of questionnaires : Taejong-dae and Haeun-dae as a seascape, Pumosa and Daesin-park as a mountain, Daechong-park and Seongjigok-park as a mixed, and Chungryulsa, Yongdoosan-park and U. N. Cemetry as a urban type. The abstracted results of amenity elements were revealed as natural environments including convex type as beach, reservoir, valley and mountain, and plant elements including woods and flower beds which raised amenity. The elements of social surroundings including children's playing, the aged's rest, and elements of structures including historic and memorial structures and high buildings. Amenity element made up of each space by region were abstracted from the Semantic Differential method. According to the factor analysis on the ground SD scale values, Kaiser's measure of sampling adequacy for 24 variables is 08602 and very high. Four factors including pleasantness, healthiness, convenience and safety showed 54.42 percent for total variance. By means of multiple regression, the model was as follows : Y=1.6636+0.3684X4+0.1955X11+0.1614X15-0.1688X23+0.1468X24. Therefore, Y:amenity, X4:beautiful-ugly, X11:clean-dirty, X15:creative-imitative, X23:cozy-dreary, X24:free-restrained. All variables in the model were significant at 0.001 level. According to the results of regression on satisfaction, the variables of satisfaction affecting amenity are the size of green space, the condition of management and the harmony with the surroundings. I think the considerating on the above could improve amenity of each region and further Pusan city.