• Title, Summary, Keyword: 야간조도

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Luminous Characteristics of Urban Street Between Day and Night (도시가로의 주.야간 빛환경 특성 분석에 관한 연구)

  • Shim, In-Bo;Kim, Bong-Kyun;Kim, Jeong-Tai
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • pp.194-201
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    • 2005
  • 도시에서의 빛의 연출은 도시의 축을 부각시키고, 가로의 아이덴티티를 연출함으로서 도시의 인지도를 향상시킬 수 있다. 또한 야간의 경관은 인공조명을 이용한 빛의 연출로 주간과는 다른 빛환경 경관을 연출할 수 있다. 이에 본 연구는 도시 가로 중에서 상업가로와 주거가로를 대상으로 주 야간의 빛환경 특성을 분석하여, 가로의 용도에 따른 주야간의 빛환경 차이를 고찰하였다. 이를 위하여 두 가로의 일정길이에 대하여 수평면조도, 스칼라 조도, 휘도 및 색온도를 측정하였으며 측정결과를 용도별, 주 야별로 비교하여 분석하였다. 측정한 결과를 정리하면 다음과 같다. (1)수평면조도의 측정 결과, 주간의 주거가로에 비하여 상업가로가 28.8[%] 높게 나타났으며 야간의 경우 87.2[%] 높게 나타났다. (2) 스칼라조도의 측정결과, 스칼라조도의 특성상 전반적으로 균일한 분포를 보이며, 수평면 조도와 마찬가지로 주간에 비하여 야간에 84[%] 높은 값이 측정되었다. (3) 휘도의 측정 결과, 주간 배경에 대한 대상의 휘도비는 상업과 주거가로가 1:2이하로 나타나 조화로운 가로경관을 연출하며, 야간배경에 대한 대상의 휘도비는 상업가로는 1:17로 활기 있는 경관을 연출하고 주거가로는 1:5로 가로경관 이미지에 적당한 강조효과가 나타났다. (4) 색온도의 측정 결과, 주간의 배경은 맑은 하늘의 색온도를 나타냈으며 대상은 상쾌하고 활동적인 이미지의 색온도를 나타내었다. 또한 야간의 경우 상업가로와 주거가로 모두 나트륨 등의 영향을 받아 전반적으로 따뜻한 느낌의 색온도가 연출되었다.

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Effect of Night Illumination on Growth and Grain Yield of Wheat and Barley (야간조명에 대한 대ㆍ소맥의 생육 및 수량반응)

  • 김영용;김충국;김시주;강병화
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.4 no.1
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    • pp.18-22
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    • 2002
  • This experiment was conducted to investigate the effect of night illumination on the growth and yield of wheat and barley. Three varieties of barley and four cultivars of wheat were tested under the different night illuminance which was controlled in the range of 1.2∼20 Lux during whole growth season at night. As night illumination was stronger, the culm length of all varieties tended to be shorter. The shortening was greater in barley than wheat. Node number, awn length and culm diameter tended to decrease as the light intensity was stronger. Internode length above the 4th and 5th node was remarkably decreased by the stronger illuminance. The degree of decrease in spike length affected by the night illuminance was much larger in the late-maturing variety among wheat cultivars. As night illumination was stronger, days to heading was shortened in general. The range of decrease was 2 to 10 days under 10∼20 Lux condition similarly in both barley and wheat. Effect of night illumination on heading date and days from initial heading to full heading was not considerably different between the crops and among varieties except Kangbori. Night illumination decreased the grain yield by 12.5% in barley, and 11.0% in wheat at 2.1∼5.0 Lux condition, and 34.6% in barley, and 29.3 % in wheat at 10∼20 Lux condition compared to control. Yield reduction was significantly different among varieties, being greatest in Kangbori among barley varieties, and in Chokwang (late-maturring variety) and Changkwang (late-maturring variety) among wheat varieties. It was interpreted that the decrease of grain yield was resulted from the decrease in the number of spikes and the number of grains per spike under the stronger night illumination. The decrease of grain yield was more directly attributed to the decrease in the number of grains per spike.

Varietal Difference in Heading Date of Rice by Night Illumination (야간 조도에 따른 벼 품종별 출수 반응)

  • 김충국;조현숙;최성호;이진모;변종영
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.48 no.3
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    • pp.209-215
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    • 2003
  • This experiment was conducted to study the varietal and ecological difference of rice in heading date by night illumination. The degree of delay in heading date and days from heading initiation to full heading (DHIF) of rice were in the order of mid-late maturing cultivars (MLC)> medium maturing cultivars (MEC) >early maturing cultivars (EAC) >very early maturing cultivars (VEC). However, the MEC showed significant variation in days to heading; Kwanganbyeo delayed significantly, but Ansanbyeo did not. The comparative sensitivity of different rice ecotypes per lux in delayed heading was 0.09-0.10, 0.14-0.26, 0.16-0.58, and 0.35-0.54 day in VEC, EAC, MEC, and MLC, respectively; the shortest ion Odaebyeo (0.09 day), moderate in Daeanbyeo (0.35 day), and the longest in Kwanganbyeo (0.58 day). Difference of DHFI was 0.-1 day in VEC, -l-2 days in EAC, 0-l6 days in MEC and 6-18 days in MLC under 50-70 lux compared to 2 lux; Daejinbyeo (-1 day), Hwaseongbyeo (6 days), Chucheongbyeo (9 days), Kwanganbyeo (16 days), and Ilpumbyeo (18 days).

An Analysis for the Night illuminance Affected on Light Environments and Weather Conditions (광환경과 기상조건에 따른 야간조도 영향 분석)

  • Lee, Jaewon;Park, Inchun;Choi, Cheolmin;Kim, Young-chul
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.24 no.1
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    • pp.25-32
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    • 2016
  • This study deals with the light environments and weather conditions affecting to the night illuminance over the Korean peninsula. The experiment was executed to analyze the effects on the illuminance at separate sites(Gyeryong and Pilseung) considering the different light environments. The analysis was applied to illuminance measurement from the lightmeter, which was developed for the IYA(International Year of Astronomy) 2009, in order to observe the illuminance of areal networks. The weather observations, such as the cloud cover and visibility, were used to understand the quantitative influence of the illuminance to the selected sites. The results show that the illuminance measurements are significantly different from data of the operational illuminance prediction model which simply applies extinction effect for the illuminance. It shows that these differences are caused by the light environments and weather conditions for each site. Therefore, it can be confirmed that the night illuminance is the output of interaction with the characteristics of light for luminous sources.

A Study on Improvement of Lighting Environment of Night-Scape in Anyang-si (안양시 야간경관 조명환경 개선방향에 관한 연구)

  • Park, Joo-Young;Oh, Min-Seok;Kim, Hway-Suh
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.23 no.2
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    • pp.27-35
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    • 2009
  • This study aimed to find problems of nightscape of Anyang-si through examination of behavioral pattern at night and measurement of illumination and luminance in accordance with regional classification following 6 regional classifications on the basis of ur1xm characteristic of Anyang-si. Basic concept of nightscape creation was application of improvement plan with analysis of regional problems and creation of artistic value to enhance image of Anyang-si as a city of art. To obtain balance and unity of night illumination, concept of light zoning was applied to smooth-transform method by regions. Especially, right to view harmonized with surrounding scenery was secured through creating gradual skyline compatible with neighbor buildings using division of each buildings according to their heights. In addition, way to improvement of night lighting environment was proposed as to illumination, height, type of lamp and arrangement of street lights and furniture in accordance with regional characteristics.

Response of Rudder Fish to the White Lights (백색광에 대한 벵에돔의 반응)

  • 양용림
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.25 no.2
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    • pp.37-43
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    • 1989
  • The purpose of this study is to find the light intensity which induced maximum gathering rate and to observe the variation of the gathering rate both in daytime and at night by suing Rudder fish, Girella punctata(Gray). An experimental tank(360L*50W*55H cm) was set up in a dark room. An illumination system was attached to the end of one side of the tank to control horizontal light intensity. Eight artificial light sources were prepared by combination of three light bulbs(10W, 60W, 100W) and eight filters. During the experiment water depth was maintained 50cm level in the tank. The tank was marked into six longitudinal sections each being 60cm long to observe the distribution of fish. The fish were acclimatized in dark condition for 50 minutes prior to the main experiment. Upon turning on the light, the number of fish in each section was counted 60 times every 30 seconds, and the gathering rate was obtained from the average number of fish in each section. The light intensity inducing maximum gathering rate was 2.98 lux(1.90-4.40 lux) at daytime and 298.56 lux(188.44-444.96 lux) at night. The variation of the gathering rate of fish in illumination time was great and irregularly fluctuated, but did not show any definite pattern. It was somewhat difference between daytime and night.

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Analysis of Urban Park Nightscape based on the Design-Construction Process and Current Status - Focused on Yeouido Park - (도시공원 야간경관의 조성 과정과 실태 분석 - 여의도공원을 중심으로 -)

  • Kim, Hyun-Geun;Kim, Ah-Yeon
    • Journal of the Korean Institute of Landscape Architecture
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    • v.46 no.2
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    • pp.14-26
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    • 2018
  • Light has been an essential part of human life. The advancement of technology has changed cities' nightscape and night activities in a drastic way. Lighting has influenced the identity of a city while promoting a variety of civic nighttime cultural pursuits, yet lighting design has not been considered adequately in the field of landscape architecture. This study aims to analyze the current status of lighting in urban parks through interviews with professionals, literature and regulation reviews, analysis of design documents and a field survey focused on Yeouido Park in Seoul. The findings and improvement directions are as follows. First, it is necessary to develop a specific lighting design method in order to avoid a marginalized, passive approach such as light fixture installation. Second, the existing standards of illuminance by KS A 3011 regulating only horizontal illuminance has turned out not to evaluate the current nightscape of urban parks properly. Therefore the criteria and guideline for analysis and design for nightscape should be articulated. Third, there are no design or management strategies to consider the changing landscape of urban parks, which is necessary due to the changing characteristics of park ecosystems. Lastly, detailed guidelines for distinguished spaces in urban parks should be studied and suggested.

Growth and Yield Response of Rice Cultivars to Different Night illumination Intensities (야간조명 광도에 따른 벼 품종별 생육 및 수량 반응)

  • 김충국;조현숙;서종호;최성호;변종영
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.47 no.6
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    • pp.471-474
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    • 2002
  • This experiment was conducted to investigate the response of rice growth and grain yield to night illumination. Three cultivars Heugjubyeo (early maturing), Hwaseongbyeo (medium maturing), and Ilpumbyeo(mid-late maturing) were tested under different light intensities ranging 1.0 to 20.0 lux (0.3 to 5.6 $1\mu\textrm{W}$ $cm^{-2}$). Awn length of all cultivars became longer as night illumination intensity increased; 4.09 cm under 10-20 lux compared to 1.93cm under 2 lux in Hwaseongbyeo. However culm and spike length ere not affected by night illumination. Night illumination delayed flowering by 3 days in Heugjinjubyeo, 5 days in Hwaseongbyeo, and 9 days in Ilpumbyeo at 10-20 lux compared to that at 2 lux. Grain yield was reduced by 10.0% in Heugjinjubyeo, 17.7% in Hwaseongbyeo, and 20.7% in Ilpumbyeo at 10-20 lux compared to 2 lux condition.

항공장애물 표식설치에 관하여

  • Korea Institute of Registered Architects
    • Korean Architects
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    • no.10
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    • pp.28-33
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    • 1974
  • 항공기의 운행 안전을 위해 제40조 및 동법 시행 규칙 제133조, 제134조, 제135조, 제140조, 제141조, 제142조와 국제민간항공조약 부속서 제12조에 의거 설치 운용하고 있는 항공장애물 표식에 있어 건물 및 기지 시설 설치지 임의 설치, 또는 비설비 방치로 인해 항공장애물표식(주간 및 야간)관리 운용상 많은 지장을 초래하고 있을 뿐 아니라, 항공기 안전 운항의 불안전 요소가 되고 있어, 건물 및 기지 설비 시설 당국의 항공장애물 표식 적부검사를 받도록 관계기관에 요망하고 있는 바, 특히, 회원의 고층건물 설비 시 유의할 사항임으로 ‘항공기 관계조문’ ‘시행규칙’ ‘설치기준’ 및 ‘항공기장애물 설치허가신청서’의 양식을 소개한다.

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Lighting Design of Subsidiary Facilities in the Golf Club (골프장 부대시설에 대한 조명 설계)

  • Kim, Dong-Hyun;Oh, Seong-Bo
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • pp.159-161
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    • 2008
  • 본 논문에서는 골프장 부대시설중 고객 동선에 있는 주차장의 조도를 실측하여 평가하고, 주차장 조도 실측과 야외연습장의 야간조명안을 토대로 Lumen Designer 시뮬레이션 프로그램을 이용하여 한국산업규격 조도기준에 적합한 주차장의 조명 개선방안을 제시하였고 이용 고객의 불편사항을 해소하기 위하여 연습장의 야간조명 설계계획을 수립하여 이를 토대로 시뮬레이션을 통하여 최적의 모델을 도출하였다.

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