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구진회,이재원,이우석,정종환,이규목,한진석 한국조명·전기설비학회 2012 한국조명·전기설비학회 학술대회논문집 Vol.2012 No.10
The outdoor lighting has made our living environment safe and active. But the spilt light from the outdoor lighting has caused health problem like the failure to thrive, nearsightedness, sleeplessness, depression. Also, the spilt light from the outdoor lighting has caused the various environmental problem like a light trespass in residential area. So, the ministry of environment has tried to manage the light pollution caused by lightings through the law of the light pollution prevention. But the measuring method of the light pollution is not yet established. So, in this paper, we survey the measurement errors of the luminance meter according to the measurement conditions and the measurement environment.
감성공학을 기초한 냉장고의 음질 인덱스 개발에 관한 연구
구진회,김중래,이은영 한국소음진동공학회 2004 한국소음진동공학회 논문집 Vol.14 No.11
The international competition in refrigerator markets has continuously required the research for sound quality of a refrigerator to improve the quality of a life. In this paper, A new method for evaluation of the sound quality of a refrigerator is developed based on human sensibility engineering by using ANN(artificial neural network). In this paper, the loudness and the sharpness of the refrigerator's signals was used for the input value in ANN's training process because the loudness and the sharpness has a good correlation between the output of the ANN and the target of the individual evaluation In the training process. Two input factor was used repeatedly in the training process to get more optimum weighting value. And then finally we developed the sound quality index of a refrigerator. The developed sound quality index was confirmed by the 96.5 % of correlation between the output of the ANN and the real evaluation. It will be applied to evaluate the sound quality of a refrigerator in the industry.
조명 시뮬레이션을 통한 도로조명 주택 침입광 개선 평가
구진회,이재원,이규목,정대관,이우석,차준석 한국실내환경학회 2013 한국실내환경학회지 Vol.10 No.4
The light trespass problem still has not been solved for a long time because of the complex influences of the reflection or overlap lights. To solve the light trespass problem, the assessment of the characteristics of the spilt light carry out firstly. In this study, we estimated the light trespass reducing performance of various load lightings using by RELUX lighting simulation program. In the simulation program, we designed the lighting environment according to the streetlight installation guideline by the ministry of land, transport and maritime affairs. And we estimated the light trespass caused by roadway lighting from first floor position to fourth floor position. And we compare the light trespass caused by back light of the roadway lighting with the light trespass caused by forward light. Then we estimated the effect of light trespass by improving the light distribution of roadway lighting from Backlight rating 3 to Backlight rating zero. From the research, we find that the light trespass caused by roadway lighting maximize at the first floor position of the house. And the light trespass contribution rate by backlight and forward light is 66 percentage and 33 percentage respectively. And we estimated that the light trespass can be decreased about 40% by improving the backlight. The result derived from this research will be helpful to establish the light pollution reduction plan to minimize the adverse effect by the spilt light from the roadway lighting.