• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2003.11a
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• pp.1341-1345
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• 2003

직물의 소리에 의해 유발되는 감성을 토대로 직물의 소리를 색채와 매치시키는 실험을 실시하여 직물의 소리를 색으로 변환해 봄으로써 시각과 생각에 의한 복합감성을 활용한 직물 디자인을 제안해 보고자 하였다. 의류소재 30개의 소리를 녹음하여 군집분석한 후 각 군집별로 섬유의 종류를 고려하여 총 6개의 소리를 선택하여 주관적 감성평가와 색 변환실험에 사용하였다. 직물의 소리는 섬유의 조성에 관계없이 주로 Blue, Purple Blue 그리고 무채색으로 표현되었다. 그런, wool은 Gr(grayish), silk는 Dk(dark), polyester는 Dl(dull), nylon은 Dk(dark)등의 차분하고, 안정되고, 점잖은 느낌의 색조로, cotton과 flax는 P(pale)와 Vp(very pale) 같은 부드럽고 가벼운 느낌의 색조로 표현되었다. 따라서 직물의 소리 감성을 설명하는 요소는 색상보다는 색조에 있음을 알 수 있었다.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.25 no.1
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• pp.18-29
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• 2011

Light emitting diode(LED) technology has been increasingly developed and larger color gamut by LED illuminations can be reproduced; therefore more efficient LED lighting design can be accomplished under a consideration of color emotion. Fifty-two LED colors which are uniformly distributed on the uniform chromaticity space are evaluated in terms of fatigueness and preference and their relation to three color-appearance attributes(lightness, chroma and hue) are investigated. As a result, 23 human observers likely to prefer and feel comfortable, when lightness of a given LED color stimulus increases as well as its chroma decreases. The highest fatigueness score is observed in red color series and the most preferred LED color is found in green color series. In addition, fatigueness and preference show a strong negative linear relation and their Pearson correlation is higher than -0.8.

• Proceedings of the KIEE Conference
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• 1999.07c
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• pp.1126-1129
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• 1999

In this paper theoretical review for the design and the algorithm of Artificial Fault Generator, on the power distribution center is which able to purposely generate and get rid of fault with the view of testing distribution systems including switchgears, was made. For the following paper verification with EMTP will be performed in order to review the function and the algorithm so that the optimized design can be established.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.27 no.10
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• pp.1778-1784
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• 2003

Vibration control of plates with a passive electrical damper is presented in this paper. This electrical absorber, piezoelectric patches connected with a resistor and an inductor in series, is analogous to the damped mechanical vibration absorber. For estimating the effectiveness of piezoelectric absorber, the governing equations of motion are derived using a classical laminate plate theory and Hamilton principle. The developed theoretical analysis is validated experimentally for a simply-supported aluminum plate in order to demonstrate the performance of passive electrical damper. The result shows that the vibration amplitude is reduced about 14dB for the targeted first vibration mode.

• Journal of the Korean Society of Costume
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• v.42
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• pp.59-68
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• 1999

The purpose of this study is to survey the color preference of mothers for the clothing of their children whose clothing is usually chosen by their mothers. The survey was performed by showing 60 color samples to provide the useful data for the fashion color planning. The result of this study shows that the prefe-rences in hue and tone are different mainly by season. The most preferred colors are yellow for boys and pink for girls in spring white in summer-beige in fall and black in winter. The most preferred tones for boys are pale in spring and summer dull in fall and dark in winter For girls light tone is most preferred in spring and pale in summer bright in fall and dark in winter Analysis of tone preferences in 6 colors shows that bright and clear are commonly preferred tones for children's clothing. Pale light vivid tones of yellow green and blue are preferred for girls and boys. Dark purple is preferred in fall and winter while pale tone is preferred in spring and summer. Red is preferred for girls especially in pale bright vivid tones while dark grayish and deep tones are preferred for boys in fall and winter.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2009.01a
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• pp.80-84
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• 2009

This paper investigates the relationship between the compression ratio and the gamut area for a reconstructed image when using JPEG and JPEG2000. Eighteen color samples from the Macbeth ColorChecker are initially used to analyze the relationship between the compression ratio and the color bleeding phenomenon, i.e. the hue and chroma shifts in the a*b* color plane. In addition, twelve natural color images, divided into two groups depending on four color attributes, are also used to investigate the relationship between the compression ratio and the variation in the gamut area. For each image group, the gamut area for the reconstructed image shows an overall tendency to increase when increasing the compression ratio, similar to the experimental results with the Macbeth ColorChecker samples. However, with a high compression ratio, the gamut area decreases due to the mixture of adjacent colors, resulting in more grey.

• Journal of the Korean Institute of Rural Architecture
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• v.9 no.2
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• pp.121-128
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• 2007

This study aims to propose directions of color-scape about fishing village and harbor in East coast. In order to offer better landscape in harbor; Namae and Sachun, such as regional atmosphere and identification are to analyze with color planning. For the quality of color-scape, natural color, regional color of harbor may be possible to work out future harbor surrounding by evaluation scale and then hue, value, chroma can be estimated systematically. This survey suggests that color of harbor is to be environmental and regional color control. We analyze that the color-scape planning through the both whole harmony and organic combination is important elements of satisfaction to the people of experience with color environments. Consequently, some proposal of color guideline by analysis of color simulation will be useful to make out preliminary design criteria in improvement of color.

• Journal of Mechanical Science and Technology
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• v.19 no.5
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• pp.1138-1147
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• 2005

This paper aims at demonstrating the feasibility of active control of beams with a multiobjective state-feedback control technique. The multiobjective state-feedback controller is de­signed on a linear matrix inequality (LMI) approach for the multiobjective synthesis. The design objectives are to achieve a mix of Hoo performance and H2 performance satisfying constraints on the closed-loop pole locations in the face of model uncertainties. The controller is also designed to reject the effects of the noise and external of disturbances. For the theoretical analysis, the governing equation of motion is derived by Hamilton's principle to describe the dynamics of a smart structural system. Numerical examples are presented to demonstrate the effectiveness of the integrated robust controller in damping out the multiple vibration modes of the piezo/beam system.

• Journal of the Korean Society of Clothing and Textiles
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• v.22 no.3
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• pp.384-395
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• 1998

The objectives of this study were to analyze the color characteristics of Saikdong by the standardized color system and to applicate it's color characteristics to fashion design. 25 traditional costumes made with Saikdong were selected from four museums in Seoul. The colors were measured using CE 310 and analyzed by Munsell HV/C. The results were shown as follows; 1. The frequently used hues in Saikdong are warm colors such as red, orange, yellow. Except purplish blue, cool colors show low usage ratio. 2. The tones of medium lightness and saturation are most frequent in Saikdong colors. 3. The characteristics of color combination are the contrast of hue and the similarity in tones. This makes the saikdong splendid and harmonious. 4. Based on this anaylized characteristics of Saikdong color combination, fashion designs were developed by computer simulations.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2004.11a
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• pp.279-286
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• 2004

본 논문에서는 출입국자 관리의 효율성과 체계적인 출입국 관리를 위하여 위조 여권을 판별할 수 있는 지능형 여권 얼굴 인증 시스템을 제안한다. 제안하는 지능형 여권 얼굴 인증 시스템은 여권 이미지에서 여권 코드 문자열을 인식하여 여권 사용자의 사진 및 관련 정보를 여권 데이터베이스에서 추출한다. 추출된 출입국자의 사진 및 얼굴과 여권에 부착된 사진 및 얼굴과의 유사도 측정을 통하여 여권 사진의 위조 여부을 판단한다. 이때, 이미지의 유사도 측정을 위해서 다양한 실험을 통한 결과를 종합 분석해 본 결과 사진 영역의 인증에는 Luminance, Edge, RGB 특징이, 얼굴 영역의 인증을 위해서는 Hue, YIQ-I, YCbCr-Cb 특징이 효과적인 것으로 나타났으며 사진 영역의 유사도와 얼굴영역의 유사도가 모두 0.8이상인 경우 정상적인 여권으로 판정하고 그렇지 않은 경우 위조가 되었을 가능성이 있는 여권으로 판정하는 방법을 사용하여 FAR 3.1%, FRR 2.7%의 우수한 결과를 나타내었다.