• 디자인학연구
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• 제14권1호
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• pp.71-81
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• 2001

현대 금속가구디자인은 기술과 재료의 새로운 도입과 구조적 해결, 가치관의 변화, 표현방법의 변화 그리고 정치 사회 구조를 통한 시대정신의 표현을 압축하여 표현하고 있다. 따라서 금속가구디자인 작업에 앞서 금속가구디자인의 시대적 흐름을 이해하고 특성을 파악하는 것이 금속가구디자인의 전문성을 강화하고 개발하기 위한 중요한 요건인 것이다. 본 연구에서는 금속가구디자인의 배경 및 특성을 구분·정리하여, 금속가구 발달에 영향을 미쳤던 제반 환경 및 사회적 요인들과 관계를 이론적 틀로 제시함으로서 각 시대별 금속가구디자인의 특성과 문화의 발달을 이해하고, 파악할 수 있는 기회를 제공하는데 그 의의가 있다. 각 시대별 금속가구의 종류는 다양하나, 여기에서 지칭하는 금속가구는 의자에 한정하여 정리하였다.

• Structural Engineering and Mechanics
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• 제54권5호
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• pp.891-908
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• 2015

For a systematic study on wind-induced vibration characteristics of large hyperbolic cooling towers with different feature sizes, the pressure measurement tests are finished on the rigid body models of three representative cooling towers with the height of 155 m, 177 m and 215 m respectively. Combining the refined frequency-domain algorithm of wind-induced responses, the wind-induced average response, resonant response, background response, coupling response and wind vibration coefficients of large cooling towers with different feature sizes are obtained. Based on the calculating results, the parametric analysis on wind-induced vibration of cooling towers is carried out, e.g. the feature sizes, damping ratio and the interference effect of surrounding buildings. The discussion shows that the increase of feature sizes makes wind-induced average response and fluctuating response larger correspondingly, and the proportion of resonant response also gradually increased, but it has little effect on the wind vibration coefficient. The increase of damping ratio makes resonant response and the wind vibration coefficient decreases obviously, which brings about no effect on average response and background response. The interference effect of surrounding buildings makes the fluctuating response and wind vibration coefficient increased significantly, furthermore, the increase ranges of resonant response is greater than background response.

• 전기전자학회논문지
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• 제20권1호
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• pp.31-44
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• 2016

본 논문에서는 자유 시점 텔레비전에서 시점 합성 영상 획득을 위해 시공간적 배경 정보 추정 기반 홀 채움 방식을 제안한다. 신뢰할 수 있는 시간적 배경 정보를 획득하기 위해 새로운 배경 코드북의 구성 및 갱신하는 과정을 수행한다. 더불어, 공간적인 국부 배경 정보 추정을 위해 홀 영역의 배경 및 전경 영역의 구별 및 갱신 과정을 수행한다. 추정된 시공간 배경 정보를 조합하여 홀 채움 과정을 수행하고, 잔여 홀 채움을 수행하기 위해 깊이 배경 정보를 이용한 우선순위 함수를 결정하여 표본 기반 인페인팅 기법을 적용한다. 실험 결과를 통해 제안 방식은 기존방식들과 비교하여 평균 0.3~0.6dB의 성능 향상이 있음을 확인하였으며, 동영상 특성 및 홀 형태에 관계없이 제안된 방식이 새로운 시점 영상을 효과적으로 합성할 수 있음을 확인할 수 있었다.

• 한국의류산업학회지
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• 제19권5호
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• pp.653-660
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• 2017

Recently, consumers' evaluation and purchase of online design has been increasing due to the popularization of designing through personal computers, but there has not been enough studies on consumers' brain wave responses depending on the change of PC monitor's color. Therefore, this study investigated how brain waves changed when different background colors with gray patterns were presented through PC monitors. Six background colors with same tone of slightly low saturation were selected, including ivory, yellow, pink, green, blue and pure white as a base color. The brightness and characteristics of color used were analyzed using the luminance meter and color scales. Brain wave was measured by EEG measurement equipment. Brain wave measurement was carried out with 9 subjects at 6 points: F3, F4, T3, T4, O1, and O2. Stimuli were shown for 15 seconds each and black screens were displayed for 15 seconds between each stimulus. As results, the brain waves at O1 responded sensitively by different background colors, followed by F4 and T4. Brain index such as 'RT', 'RA', 'RG', 'RSA', and 'RAHB' showed significant differences depending on the background color at O1, whereas 'RST' differed at F4. Yellow and blue backgrounds pair was the only stimuli that showed significant differences in six brain indices mentioned. Yellow background had higher value of 'RG' at O1 and higher 'RST' at F4, indicating yellow background enhanced concentration. Blue background activated 'RT', 'RA', 'RSA', 'RAHB' at O1, meaning blue background induced calm and stable state.

• 한국분무공학회지
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• 제25권3호
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• pp.111-118
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• 2020

This paper describes the effect of DME, biodiesel blended fuels on the macroscopic spray characteristics in a high pressure diesel injection system using Background Oriented Schlieren (BOS) method. The BOS method for visualization of impingement evaporation sprays to analyze macroscopic spray properties and evolutionary processes. In this work, the blending ratio of DME in the blended fuel are 0, 50, 100% by weight ratio. In order to investigate the macroscopic impinged spray characteristics under the various injection parameters and blending ratio. In this work, a mini-sac type single-hole nozzle injector with nozzle hole was length 0.7 mm and diameter of 0.3 mm was used. According to the result, the spray area of the collision wall increased as the DME mixing ratio increased, and the evolutionary pattern showed a stepwise increase due to the collision effect of the wall. Also, results of impinged spray area were increased according to increasing injection pressure.

• 한국전자통신학회논문지
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• 제9권2호
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• pp.149-154
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• 2014

실외에서 영상기반의 화재감지는 시간, 날씨 변화에 따른 조도와 그림자 등에 의하여 성능에 영향을 받는다. 본 논문에서는 주간에 화재감지를 위하여 외부조명 변화에 강건한 배경추정 알고리즘과 결합된 연기검출 방법을 제안한다. 혼합 가우스 모델(mixture Gaussian model)을 배경추정에 적용하고 분리된 후보영역에 대하여 연기의 통계적 특성을 적용하여 연기를 검출한다. 주간 야외에서 획득한 영상에 대하여 제안하는 방법이 실외 연기검출에 유용한 것을 확인한다.

• 한국유기농업학회지
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• 제14권2호
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• pp.117-137
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• 2006

Environment-friendly(EF) agricultural policy developed to support high-quality farm products, such as organic farm products, doing so for the sake of strengthening the competitive power of Korean agriculture after the agreement of UR. The details of the policy are as follows : enforcing certification of organic farm products, establishing of the Law of Fostering the EF agriculture, carrying out the order of direct-payment, setting up the Five Year Plan for EF agriculture, etc. This study focuses on the background of social economy, the standpoint of EF farming in agricultural policy, and the analysis of the characteristics in EF agriculture. Three aspects in the background of the policy are as follows : the social movement, the social economy, and the social system. The standpoint and characteristics of the policy are studied by the analysis of the target and means of the policy which is based on the policy documents.

• Journal of Information Display
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• 제13권3호
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• pp.101-106
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• 2012

This study was conducted to enhance the cubic effect by representing an image with a sense of three-dimensional (3D) depth, using chromostereopsis, among the characteristics of human visual perception. An algorithm that enhances the cubic effect, based on the theory that the cubic effect of the chromostereoptic effect and the chromostereoptic reversal effect depends on the lightness of the background, classifies the layers of the 3D image input into the foreground, middle, and background layers according to the depth of the image input. It suits the characteristics of human visual perception because it controls the color factor that was adaptively detected through experiments on each layer; and it can achieve an enhanced cubic effect that is suitable for the characteristics of the image input.

• 한국실내디자인학회논문집
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• 제22권1호
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• pp.97-104
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• 2013

This study aims at finding out the characteristics and influences of Libeskind's early drawing works through comparisons of each drawing. The importance of his experimental drawing works is not only their uniqueness but also relationship to creation and development of his architecture. Libeskind's musical and educational background had great impacts on forming his early drawings. A series of drawings including 'Micromegas', 'Chamberworks', and 'Theatrum Mundi' shows variety and experiments about reconstruction of three dimensional architectural fragments, abstractive line drawing and plane oriented painting. Libeskind himself cease to experiment drawing techniques but their characteristics still remain in his sketches, diagram and conceptual drawings. In spite of influences of undergraduate design studios, theoretical background of graduate studies, their experimental features are due to his continuous endeavor to make and develop his drawing skills and contents. As a result, his early drawings act as media and way to communicate and develop his concepts.

• 성인간호학회지
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• 제26권3호
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• pp.320-329
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• 2014

Purpose: The purpose of this study was to analyze the effect of sexual attitude among the elderly to their sexual life while exploring the moderating effect of general characteristics in the relationship between sexual attitude and sexual life. Methods: A descriptive research design was used. The subjects were 322 married elderly from four silver centers in Seoul and Gangwon-do. Aging Sexuality Attitude Scale developed by White (1982) was used to examine sexual life status and general characteristics of the subjects (gender, age, academic background, religion, economic status, and residential type). For data analysis, ${\chi}^2$-test, t-test, and ANOVA were conducted. Since the dependent variable of sexual life is a binary variable, hierarchical logistic regression was implemented. Results: There were 180 people (55.9%) who had a sexual life. Depending on gender (${\chi}^2$=35.03, p<.001), academic background (${\chi}^2$=29.45, p<.001), and economic status (${\chi}^2$=7.36, p=.025), the subjects showed significant difference in terms of sexual life. Regarding sexual attitude, the subjects showed significant difference depending on gender (t=-5.47, p<.001), age (t=-2.31, p=.021), academic background (t=5.16, p<.001), economic status (F=3.17, p=.043), and sexual life status (t=4.99, p<.001). Conclusion: It is important to devise the sex education program in consideration of gender, age, and academic background that showed moderating effects.