• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2005년도 추계학술발표대회 논문집
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• pp.151-154
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• 2005

These days we are more interested in the space of architecture that how the change is likely to affect and how to be realized human. Human beings are recognizable the space and the creation of the space is eventually effected through human beings being perceptible the space of architecture and the equivalence of the space. That is the light, one of phenomenological elements, has been the first visual experience at birth. This study will concentrate on the importance of the phenomenological light especially indoors and study how architectural elements influence human beings with the light as one of the basic design factors for human life. That is exactly purpose of this research paper and this paper can make our lives worth living significant with the actively various uses inside spaces through the phenomenological light as a natural light in our human beings.

• 한국실내디자인학회논문집
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• 제21권6호
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• pp.3-11
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• 2012

As most modern architectures had been constructed aiming at only both self-reliance and the purity without considering the place, the contemporary architectures have been also exposed to 'the loss of the place' similarly. From recognizing these problems, studying new spatial approach and various movements to create new modern place overcoming this have been progressed. It is meant that building shouldn't exist away from a land, without meanings. It is need to create new space aggressively against varying spaces. Thus, This thesis focus on architect Jean Nouvel among the architects having the insight of space and study his architectural design philosophy through his works creating new space. The aim of this study is to review how to define the 'placeness', and the light as a mediator of place. First of all, this thesis begins with a review what is the 'placeness' as spatial analysis and how to define 'light' as a mediator of place with his books, scholarly lectures, interviews, writing and papers and then analyse how light is represented through 'the place program of light' from his selected works. As a result of it, the thesis provides the possibilities of his constant challenges about 'existence-space-essence' by deriving the characteristics of 'the place program of light' focused on what his architectural approach constructs new space all the time through a regular program even if hard to define all his works as one model.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 추계학술대회
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• pp.109-111
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• 2021

최근 라이트 필드 카메라를 통한 컴퓨터 비전 연구가 활발히 진행되고 있다. 라이트 필드 카메라에서는 공간정보를 가지고 있기 때문에, depth map estimation, super resolution, 3D object detection 과 같은 분야에서 다양한 연구가 진행되고 있다. 본 논문에서는 라이트필드 카메라를 통해 취득되는 7×7 배열의 이미지를 통해 blur 영상에서 객체를 검출하기 위한 방법을 제안한다. 기존의 카메라에서 취약한 blur 영상을 라이트 필드 카메라를 통하여 검출한다. 제안하는 방법은 SSD 알고리즘을 사용하여 실제 라이트 필드 카메라에서 취득한 blur 영상을 사용하여 성능평가를 수행한다

• 한국환경과학회지
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• 제28권5호
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• pp.521-526
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• 2019

In this study, a solar light collector that collects and transmits solar light required for crop production in a closed plant production system was developed. The solar light collector consisted of a Fresnel lens for collecting solar light, and a tracking actuator for tracking solar light from sunrise to sunset to increase the light collection efficiency. The optical fiber that transmitted solar light was made of Glass Optical Fiber (GOF), and it had an excellent optical transmission rate. After collecting the solar light, the amount of light was measured at 5, 10, 15, 20, 25, and 30 cm distances from the GOF through the darkroom by using a light sensor logger connected to a quantum and pyranometer sensor. Compared with solar light, the light intensity of pyranometer sensor measured at 5 cm was 114% higher than solar light, and 61% at 10 cm. In addition, it was observed that it is possible to transmit the necessary amount of light for growing crops up to about 15 cm (as over 22%) through GOF. Therefore, adding diffusers to the solar light collector should be expected to replace artificial light in plant factories or plug seedlings nurseries for leafy vegetables. More studies on the solar light collection devices and the light transmission devices that have high light collection efficiency should be conducted.

• 자동차안전학회지
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• 제11권4호
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• pp.16-21
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• 2019

In recent years, most automobile manufacturers have been using slim light source images to imprint their own brand image and identity. A light guide type lamp is widely used for making these kinds of a slim light source image. A light guide lamp means using a light emitting diode light source at one end of a long cylindrical pipe. The light from the light emitting diode source moves through the pipe by total reflection principle. Moving light is sent forward by various optic structures which is applied in the cylindrical pipe. However, the light guide lamp has a problem that the image of the light differs depending on the viewing direction, and in some cases there is dark section. It means light guide has low quality about lighting image. In this paper, trying to improve the fundamental problems of the light guide mentioned above by using various triz methods. Through functional modeling, estimating the factors affecting the light in the light guide lamp and make various ideas to improve the lighting image using the chain effect cause analysis, function oriented search scientific database techniques. Using these kinds of various TRIZ methods, finally find solutions that can improve the brightness and lighting uniformity of the light guide lamp. The ideas obtained in this paper were applied to actual vehicle development, and several patents achievements were obtained. In conclusion, it is proved that TRIZ method is useful for making ideas in actual automobile industrial field and is also a useful method for acquiring patent.

• 대한교통학회지
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• 제21권6호
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• pp.67-73
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• 2003

본 연구는 기존의 신호등의 시각적 인지도를 향상시켜 운전자의 인지실수를 예방하고 안전운전을 도모하기 위해 보조녹색신호가 추가된 신호등에 대한 연구를 수행하였다. 기존의 3색, 4색 신호등과 보조녹색신호를 추가로 제시한 3색, 4색 신호등을 자동차 모의실험장치를 통하여 비교한 결과 두 가지의 신호등간의 유의한 차이가 있는 것으로 나타났다. 이러한 결과는 개선된 신호등이 현장 적용시 운전자가 스스로 의식하지 못하는 상태에서 제동시점을 다소 앞당겨준다는 점에서 안전운전에 기여할 수 있는 가능성을 보여주었다. 본 연구 결과는 실제 운전자의 반응을 비교함과 동시에 주관적인 행동반응을 조사함으로써, 연구결과의 실제 적용가능성을 제시하였다는데 그 의의가 있다고 할 수 있다.

• The Korean Journal of Ecology
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• 제28권2호
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• pp.105-112
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• 2005

Environmental factors such as light and low $CO_2$ concentrations trigger events which may result in stomatal opening. Stomatal aperature is largely controlled by the solute contents of guard cells, but not exclusively, by through changes in their content of potassium salts, with $K^+$ balanced either by $Cl^-$ or malate, depending on the species and conditions. However, how these signals are sensed and how they are transduced into driving the ion fluxes that control stomatal movements is not still fully understood. The basic role of stomata is regulating transpiration and photosynthesis. Photosynthesis plays a central role in the physiology of plants and an understanding of its response to light is, therefore, critical to any discussion of how plants sense and respond to light. It had been proposed that the evidences pointed three possible mechanisms for the light response. Firstly, there is a direct response of stomata to light. Secondly. there is an indirect response of stomata to light through the effect of $CO_2$. Lastly, there are some evidences for a third effect of light on stomata. However, attempts to investigate how these three possible mechanisms explained in detail in response to light have not been made. Therefore, this study is examined the differences among these three possible mechanisms.

• 한국과학교육학회지
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• 제38권6호
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• pp.813-823
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• 2018

본 연구의 목적은 빛에 대한 초등학생들의 이미지 스키마를 통해 이들의 개념적 은유 유형을 분석하는 것이다. 연구 참여자는 경상남도 G시의 한 개 초등학교 6학년 학생 162명이다. 이 연구를 위해 분석틀이 고안되었으며, 그 분석틀은 이미지 스키마 분석틀과 체계적 기능 문법 분석틀이다. 학생들의 빛 개념을 묻는 질문지도 개발되었다. 연구 결과는 다음과 같다. 첫째, 광원에 대해 학생들은 빛에 대해 두 가지의 구조를 가지고 있음을 보였으며, 그 두 가지는 빛이 광원으로부터 나와 직선으로 공간에 퍼져나간다는 것과 빛이 광원 주위에 정지해 있다는 것이다. 둘째, 물체를 보는 과정에 대한 이해에서는, 학생들은 과학자적 개념을 포함하여 5개의 구조를 나타냈다. 셋째, 빛의 반사에 대한 이해에서는 학생들은 과학자적 개념을 포함하여 4가지의 개념 구조를 나타냈다.

• 한국멀티미디어학회논문지
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• 제24권1호
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• pp.30-39
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• 2021

Research in the field of health lighting has continued to advance to reproduce the color temperature of natural light which periodically changes. However, most of this research could only reproduce a uniform circadian color temperature of natural light, therefore failing to realize the characteristics of the circadian cycle of color temperature difference by latitude and longitude. To reproduce the color temperature of natural light on which the characteristics of a region are reflected, the collection technology of real-time characteristics of natural light is needed. If the color temperatures which are not within a periodical pattern due to climate changes, etc., are measured, it will be difficult to judge the occurrence (presence) of the anomalies and to reproduce the circadian cycle of the color temperature of natural light. Therefore, this study proposes an algorithm for judging the anomalies in real time based on the sliding window to reproduce the color temperature of natural light. First, the natural light characteristics DB collected through the on-site measurement were analyzed, the differential values at a one-minute interval were calculated and examined, and then representative color temperature circadian patterns by solar terms were drawn. The anomalies were then detected by the application of the sliding window that calculated the deviation of the color temperature for the measured color temperature data set, which was collected through RGB sensors, while moving along the time sequence. In addition, the presence of anomalies was verified through the comparison study between the detection results and the representative circadian cycle of the color temperature by solar term. The judgment method for the anomalies from the measured color temperature of natural light was proposed for the first time, confirming that the proposed method was capable of detecting the anomalies with an average accuracy of 94.6%.

• 한국실내디자인학회논문집
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• 제14권3호
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• pp.199-207
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• 2005

We recognize analysing and quantifying an effect of light and colors on people' psychological response changing according to environmental conditions as important. Therefore, this study intends to improve efficiency in realizing emotional design that contributes to creation of helpful and pleasant interior using architecture that is able to refresh human emotion or light and colors which are important factors in interior design. For the purpose, this study analyses an effect of colors in interior space and the effect of interaction between light and color through modeling to identify types of psychological response. And it is to present a generalized conclusion through an analysis of meaning of the two effects. The ultimate goal of this study is to identify the value and possibility of actual design. This study measures response on questionnaire through representative vocabulary by abstracting based on evaluation image selected through the 1st and 2nd preparatory research and grouping similar words. In next step, images represented both by light and colors are presented as virtual space and for data input and analysis based on psychological response corresponding to each image, this study uses SPSS 11.0 statistical package program to analyse data collected. The space to be experimented is a livingroom, a center of residential area.