• 식물병연구
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• 제22권2호
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• pp.100-106
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• 2016

본 연구는 LEDs를 이용한 광질과 광조사 방법이 사과나무를 고사시키는 토양병원균 4종의 균사생장에 미치는 영향을 조사하였다. 그 결과, P. cactorum KACC40166 (역병균), A. rolfsii KACC40170 (흰비단병균) 및 H. mompa KACC40836 (자주날개무늬병균) 균주는 광조사 방법 간에 차이 없이 대조구와 비교하여 처리 간 10% 이내의 차이로 유사한 균사생장을 보였다. 그렇지만, R. necatrix KACC40168 (흰날개무늬병균) 균주의 균사생장은 광조사 방법 간에 공통으로 대조구와 비교하여 LED 청색광, 청색+녹색 혼합광, 청색+적색 혼합광 및 형광등 조사에서 유의하게 억제되었다. R. necatrix KACC40168 균주의 멜라닌 색소는 광조사 방법과는 상관 없이 LED 녹색광과 형광등 하에서 상대적으로 강하게 발현된 반면에, LED 적색광과 대조구에서는 유도되지 않았다. 더욱이, R. necatrix KACC40168 균주의 균사 폭은 광조사 방법 간에 공통으로 대조구와 비교하여 LED 청색광과 청색+녹색 혼합광에서 유의성 있게 얇아졌다.

• 조명전기설비학회논문지
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• 제25권1호
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• pp.30-41
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• 2011

This study performs the subjective evaluations of LED illumination conditions according to three types of color temperatures (7,000[K], 5,000[K], 3,000[K]) after employing LED illumination system in the classroom, Since the objective of this study is to develop an artificial lighting conditions like day light comfortable to students in the classroom, the learning effect based on three types of LED illumination conditions are analyzed. Three factors (learning intention, learning environment, learning motivation) are extracted by ANOVA and there are preference differences of LED illumination conditions between learning intention and learning environment factors. Especially, preference differences of LED illumination conditions are existed about calculation, reading and fatigue reduction. The test results of this study can be applied to obtaining high achievement of learning based on the lighting conditions.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.138.3-138
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• 2001

Because face has non-rigid structure and is influenced by illumination, we need robust face detection algorithm with the variations of external environments (orientation of lighting and face, complex background, etc.). In this paper we develop a new face detection algorithm to achieve robustness. First we transform RGB color into other color space, in which we can reduce lighting effect much. Second, hierarchical image segmentation technique is used for dividing a image into homogeneous regions. This process uses not only color information, but also spatial information. One of them is used in segmentation by histogram analysis, the other is used in segmentation by grouping. And we can select face region among the homogeneous regions by using facial features.

• 한국가구학회지
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• 제24권3호
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• pp.217-225
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• 2013

The furniture of the Joseon era, life sense of human forms a culture has appeared well. Feeling of life refers to the sense of feel natural to the history and traditional culture of the area and their own customs. Further, it is possible to be a sense that reflects the mental contents ego, ethical and religious. Furniture traditional and sophisticated sense like this is to take care of the sophistication that comes out from the inside than the beauty artificial as a function of the sense and user preferences. This is a feeling of unique Korean. Due to changes in the housing, the beauty of these illustrates the altered form mechanically a uniform in modern times. Have that desired to be manufactured furniture by applying the neck Korean furniture of our living environment that will change in Western Europe of today, with the tradition of the modern lifestyle.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2002년도 전력전자학술대회 논문집
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• pp.58-62
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• 2002

The MPPT methods is used to get the maximum energy from the limited size of a photovoltaic array. This study deals with the suitable MPPT method of solar lighting lamp and the improved charge and discharge characteristics. So we proposed the control algorithm for stand-alone photovoltaic array(SPVS). The result of experiment is presented the improved charge characteristics and the charge and discharge times reduction, the depth of discharge control. so, the system stabilization goes up. It is possible economical effect to apply for solar lighting lamp used photovoltaic array

• 조명전기설비학회논문지
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• 제12권2호
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• pp.1-6
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• 1998

INSNA에서 제시하고 있는 환경등급에 따른 광속유지율 산정법에 기초하여, 각 고속도로의 교통량, 주변 지역의 오염 정도에 따라 세분화된 보수율을 산정하는 방법을 제시함으로써 고속도로 조명설계에 있어서 보수율 적용을 손쉽게 할 수 있도록 하였다. 또한, 그러나 기존의 보수율 개념만 가지고는 실제적인 광손실률 값을 얻을 수 없으므로 장치적용률로서 0.9 정도를 고려해야 실제 현장에서 적용하고 있는 보수율에 근사한 값을 얻을 수 있었다.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2008년도 추계학술대회 논문집
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• pp.289-292
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• 2008

This paper represents the electric energy saving using light control system. Without Light Control System(LCS), it is very hard to classify the amount of electric energy saving for lighting, since it is determined by the end-user's preference in times. Typical LCS has an fixed algorithm to control each light's intensity by ON/Off Control, Step Control, or Dimming Control. We have studied the electric energy saving effect in a LCS equiped building with natural lighting. The electric power consumption at the peak power consumption time with LCS reduced up to 65% of the non-controled case.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2008년도 추계학술대회 논문집
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• pp.153-156
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• 2008

According to the conversion of building into skyscraper, most buildings have curtain wall structures, so the shading device of building is required. The types of shading systems are a roller shade, venetian bind, and vatical blind and so on. A miler shade is mostly used among the shading systems. An experimental evaluation was verified whether there was an effect of shading materials(Perforated panel, Fabric) in each condition by an experiment with artificial lighting and daylight.

• 한국실내디자인학회논문집
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• 제21권6호
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• pp.243-251
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• 2012

Theatricals have been with human's history for a long time. And It is also receiving a lot of love in modern times. The stage is recognized another space of time by spectators during the play and the production actualize fictional world by using all destination things on the stage. Therefore, the design of the stage has symbolism and the production needs semiological. The Elements expressed through the stage is composed of stage equipment, costume, lighting, stage effects and the production needs light, sound and costume designers, a stage manager, grips an advertising director for the play. The study analysis on symbolic image on the view of semigical with focused on "Vishnvovvi sad" of Anton Chekhov. The details of the study are symbolism of stage effect and costume, lighting, stage equipment. Furthermore, The study analyze way to symbolic Express korean characteristics and This research is an excellent source for students who are studying the semilogical analysis of stage.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 하계학술대회 논문집 C
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• pp.1073-1075
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• 1998

This paper presents the method of parameter estimation of diffusion model for monitoring Demand-Side Management Program. Bass diffusion model was applied in this paper, which has different values according to parameters ; coefficients of innovation, imitation and potential adopters. Though it is very important to estimate three parameter, there are no empirical results in practice. Thus, this paper presents the method of parameter estimation in case of few data with constraints to reduce the possibility of bad estimation. The constraints are empirical results or expert's decision. Case studies show the diffusion curves of high-efficient lighting and also forecasting of the peak value for power demand considering diffusion of high-efficient lighting, the feedback and least-square parameter estimation method used in this paper enable us to evaluate the status and forecasting of the effect of DSM program.