• 한국환경보건학회지
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• 제5권1호
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• pp.40-45
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• 1978

We have selected 36 schools of a total of night high schools for boys and girls in seoul and measured intensity of illumination of the classroom, The corridors and the stairs that students study and live, with priority given to an illumination, a primary factor of environmental sanitation of school following is the result. 1. The maximum average intensity of illumination of the classroom is 93.2 Lux, and the minimum average intensity of illumination 39.5 Lux. Mean$\pm$S, is 59.03$\pm$22.8 Lux 2. The maximum average intensity of illumination of the corridor is 39.2 Lux, and the minimum average intensity of illumination 11.1 Lux. 3. The maximum average intensity of illumination of the stair is 11.58 Lux, and the minimum average intensity, of illumination 4.92 Lux, mean$\pm$S.D is 7.88$\pm$10.0Lux. 4. Schools with tile illumination facilities more than 50 Lux are 63.8% and less than 50 Lux are 36.2%. 5. Schools with 9-11 facilities of a source of light per classroom by a fluorescent lamp are the most as 30.50%. 6. As for the corridor, schools with the illumination equipment less than 10 Lux are 27.8%, are more than 10 Lux 72.2% 7. As for the stairs schools with the illumination equipment less than 10 Lux are 77.8%, and more than 10 Lux 10 Lux 22.2%.

• Agricultural and Biosystems Engineering
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• 제3권1호
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• pp.35-43
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• 2002

The spectral color resolution of an image is very important in color image analysis. Two factors influencing the spectral color resolution of an image are illumination intensity and lens aperture for a selected vision system. An optimal combination of illumination intensity and lens aperture for color image analysis was determined in the study. The method was based on a model of dynamic range defined as the absolute difference between digital values of selected foreground and background color in the image. The role of illumination intensity in machine vision was also described and a computer program for simulating the optimal combination of two factors was implemented for verifying the related algorithm. It was possible to estimate the non-saturating range of the illumination intensity (input voltage in the study) and the lens aperture by using a model of dynamic range. The method provided an optimal combination of the illumination intensity and the lens aperture, maximizing the color resolution between colors of interest in color analysis, and the estimated color resolution at the combination for a given vision system configuration.

• 대한치과보철학회지
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• 제44권4호
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• pp.374-382
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• 2006

Purpose: This study was designed to investigate the present conditions of illumination techniques in dental clinics in order to contribute improvement of operating environment. This study also aimed exploring qualitative and quantitative luminous intensity required for color temperature in dental clinic illumination, which was a critical part of esthetic dentistry. Materials and methods: A total of forty-eight local dental clinics were selected for sampling a) luminous intensity, and b) color temperature. The author measured the luminous intensity and the color temperature with lux meter and color meter respectively between 12pm and 2pm. The dental unit chair placed in the general operation positions were kept the distance 60 cm then all dental units were measured three times and averaged. The author measured the luminous intensity and color temperature with both common dental operating light and then without operating light in different office environments. The study was conducted under three conditions: 1 artificial illumination in clear day light 2. artificial illumination in cloudy day light, and 3. artificial illumination alone. Results : The results obtained were as follows. 1. The average luminous intensity in dental clinic lighting was 425 lux which was not sufficient to produce the optimal shade of the patient's teeth. Furthermore, the average luminous intensity even in full operating lighting was 9532 lux which fell short of the required level of 10,000 lux. 2. The average color temperature of all dental clinics surveyed was 5169 K which met the optimal range. However, only 33.3% fell in the correct region between 5,000-5,500 K as 25% were over 5,500 K and 41.6% were below 5,000 K. As a result, 66.7% were under insufficient color temperature conditions. 3. The dental unit chair placed next to a window, hence exposure to natural lighting, had significantly higher luminous intensity and color temperature compared to the dental unit chair which didn't have a window or natural lighting. 4. The data analysis revealed that only 6.3% of the dental clinic were met the standard of the average luminous intensity and color temperature.

• 로봇학회논문지
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• 제6권2호
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• pp.173-181
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• 2011

Recognition of traffic signs helps an unmanned ground vehicle to decide its behavior correctly, and it can reduce traffic accidents. However, low cost traffic sign recognition using a vision sensor is very difficult because the signs are exposed to various illumination conditions. This paper proposes a new approach to solve this problem using an illuminometer which detects the intensity of illumination. Using the intensity of illumination, the recognizer adjusts the parameters for image processing. Therefore, we can reduce the loss of information such as the shape and color of traffic signs. Experimental results show that the proposed method is able to improve the performance of traffic sign recognition in various weather and lighting conditions.

• 한국실내디자인학회논문집
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• 제19권4호
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• pp.82-89
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• 2010

The studies published up to now, related to the correlation between spatial structure and visitors' behavior in a museum are rather relatively lacking when it comes to the in-depth consideration for the effect of the actual exhibition environment. So the main purpose of this study is to define the correlation between the light environment and the visitors' behavior. Towards this end, this study uses 'space syntax' to quantify the spatial structure with 'integration', 'connectivity' and 'control value'. Meanwhile, 'tracking score' and 'tracking frequency' were selected as the scope among the indices of behavior's analysis. The results of this study are as follows; First, integration and correlation of tracking score and tracking frequency are lowest when it comes to the extra large historical museums where the difference of intensity of illumination by each convex space. Meanwhile, the most considerable effect is exerted by control value. Compared to tracking score, tracking frequency is closely related to 'syntactic variables'. Second, visitors do not take the short cut the dark exhibition space even when very dark exhibition spaces continue after passing through relatively bright space. Analysis of visitors' behavior by control value in the exhibition space composed of this type of intensity of illumination environment is not valid. Third, visitors move to relatively brighter transitional space compared to the exhibition space with low intensity of illumination when passing through dark exhibition continually. Meanwhile, when visitors pass through the exhibition space there is some difference intensity of illumination they move to relatively dark exhibition center among the subsequent exhibition spaces. Accordingly, when the composition of exhibition space that continues onto the environment of low intensity of illumination is inevitable, differentiating intensity of illumination appropriately would be effective in inducing visit to the subsequent exhibition space.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 추계학술대회 논문집
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• pp.1402-1406
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• 2004

As a method of confirming light flickering, we tried to confirm the flicker index measured by Flickermeter and the application possibility by using digital intensity of illumination meter. Also, after simulating the quality deterioration of electric power and generating a various voltage change, we studied on the function between the flicker index measured by Flickermeter and the flicker index for the intensity of illumination by using digital intensity of illumination meter.

• 한국농림기상학회지
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• 제4권2호
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• pp.80-85
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• 2002

야간조명 광도의 변화가 참깨와 들깨이 생육 및 수량에 미치는 영향을 검토하고자 참깨는 안산깨와 서둔깨, 들깨는 종실용인 옥동들깨와 엽실겸용인 아름들깨를 사용하여 1.0~10.0Lx(5~28 ㎽ m$^{-2}$ , 0.01~0.14 $\mu$㏖ s$^{-1}$ m$^{-2}$ )의 광도로 전 생육기간 동안 밤새조명을 하여 시험을 수행한 결과는 다음과 같다. 1 참깨 생육은 야간조명 광도가 높을수록 경장과 초삭고는 증가되었으며, 분지수는 감소되었고, 개화 및 성숙기가 지연되었다. 2. 참깨 수량은 야간조명 광도가 높을수록 주당삭수와 등숙율이 감소되어 수량이 감소되었으며, 서둔깨보다 안산개의 감소정도가 컸다. 3. 들깨의 생육은 야간조명시 절수가 증가되었으며, 분지수는 감소하였다. 4. 들깨의 개화와 성숙기는 야간조명 광도가 높을수록 현저하게 지연되었으며, 야간조명 광도 2Lx 이하에 비하여 6~10Lx에서는 개화가 21~28일이 지연되었다. 5. 들깨의 수량은 야간광도가 높을수록 화방군수와 화방당 삭수 및 천립중이 감소되어 야간조명 광도 2Lx이하에 비하여 6~10Lx에서는 89~98%가 감소되어 수량을 기대할 수 없었다. 6. 수량과 생육특성과의 상호관계는 참깨와 들깨에서 모두 개화까지의 소요일수와는 고도의 부의 상관을 나타내었으며, 참깨의 주당삭수, 등숙율과 들깨의 화방군수, 화방당 립수와는 정의 상관을 나타내었다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2010년도 추계학술대회 논문집
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• pp.1009-1010
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• 2010

• 구강회복응용과학지
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• 제30권4호
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• pp.289-298
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• 2014

목적: 본 연구는 치과 기공실의 조명이 심미 보철을 위한 색조의 분별과 조화, 재현에 적당한지 알아보기 위한 실태 조사이다. 연구 재료 및 방법: 48곳의 치과 기공실을 대상으로 lux meter와 color meter를 이용하여 포세린 작업대(porcelain table) 상판 중심의 조도와 색온도를 측정 하였다. 각각의 기공실을 자연광(day light)과 인공조명(artificial illumination)이 있는 오후 12시 - 2시 사이와 인공조명 만이 있는 오후 7시 - 10시 사이, 2차례 측정하였고, 맑은 날과 흐린 날로 구분하였다. 결과: 1. 전체 기공실의 평균 조도는 1871 lx이었고, 67%의 기공실이 1600 lx를 넘겨 색과 관련한 작업을 하기에 적합한 조도를 갖추었으나 33%의 기공실은 이에 미치지 못하였다. 2. 전체 기공실의 평균 색온도는 6506 K로 색과 관련한 작업을 하기에 부적절하였다. 적정 색온도인 5000 - 5500 K를 만족하는 기공실은 없었다. 3. 전체 기공실의 낮과 밤의 조도(P = 0.73) 및 맑은 날과 흐린 날의 조도(P = 0.89)와 낮과 밤의 색온도(P = 0.17) 및 맑은 날과 흐린 날의 색온도(P = 0.51)는 유의한 차이를 보이지 않았다. 결론: 본 연구에서 조사된 치과 기공실의 조명은 색과 관련한 작업을 하기에 부적절한 경우가 많았다.

• 한국가구학회지
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• 제24권1호
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• pp.33-41
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• 2013

As professional postnatal care systems have been rapidly supplied, there is sharp increase of postnatal care centers without legal regulations for a mother and a infant. For the quick recovery of mothers, newborn infants that have weaker immune systems are being managed in group in the postnatal care centers. Recently, the attention of the postnatal care centers has been growing because the problem of pneumonia which led to result in a casuality in a infant unit was happen. So, this research analyzed the indoor environment of infant unit through measuring formaldehyde, carbon dioxide, intensity of illumination. As a result of the data, infant units showed higher concentration of formaldehyde and carbon dioxide than Indoor Air Quality Control Law. Moreover, infant units was measured higher intensity of illumination than the range of optimum illumination for infants.