illuminance levels
The trend of natural illuminance levels in 14 Chinese cities in the past 50 years
... Aerosols can usually be divided into natural and an- thropogenic aerosols. Natural aerosols mainly refer to aerosols that are released into the atmosphere by vol- canic eruption. Volcanic eruptions in 1982 and 1991 af- ...
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Turkish D light : accentuating heritage values with daylight
... daylight illuminance levels is essential in daylight studies of museums and exhibition buildings given the sensitivity of artworks and other objects to excessive exposure to illuminance ...natural ...
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Assessment of Natural and Artifical Lighting Levels in Lecture Rooms (A Case of Sunyani Technical University)
... light illuminance. The results reveal that on an average the illuminance levels by artificial lighting in the lectures halls in blocks (G), (F) (HCIM) is excellent as compared with the acceptable ...
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Occupant density and daylight illuminance level fluctuation for office building in Malaysia
... needed levels for occupants. A range of illuminance levels is necessary for occupants to enhance visual ...adequate illuminance levels are ...
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Browse Title Index
... of illuminance level is started with the isocontour graphics as seen in Figure 7 and ...Higher illuminance level are shown with orange-red colour, while the blue colour shows the lower ...higher ...
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Energy-Saving Potential of Daylighting in the Atria of Colleges in Najran University, Saudi Arabia
... generate illuminance levels of up to 100 000 lux at midday (Frank, Doug, Jeff, & Josh, ...daylight illuminance under the clear sky of Najran city will be measured and discussed in this ...
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... retinal illuminance under four sets of ...six illuminance levels indicated with tick marks on the illuminance axis ...versus illuminance (SVI) curve at those ...
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A Photometric Characterization Methodology for Daylighting Fixtures
... an illuminance data set produced in AGI32 with a 35 degree angles louver for Raleigh, NC on March 21 st at noon with cloudy sky ...record illuminance values and visual effect. The illuminance ...
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Capturing age-related changes in functional contrast sensitivity with decreasing light levels in monocular and binocular vision
... Participants viewed the screen binocularly, followed by the right eye alone and then the left eye alone at each light level. 52 The eye not being tested was covered with an opaque, infrared transmitting filter which ...
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Distributed Intelligent Lighting System by Performing New Model for Illuminance and Color Temperature in the Workplace
... illumination levels higher than specified values while minimizing pow- er consumption using different types of least squares to estimate illuminance at the ...target illuminance and target color ...
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Evaluation of chromaticity coordinate shifts for visually perceived image in terms of exposure to external illuminance
... external illuminance sources with “cold” white color are characterized by substantial shift of visually perceived colors from the area of saturated red and green towards the point of white color determined by the ...
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Relative Method of Measuring Coefficient of Luminous Intensity of Retro Reflective Devices
... One of the main characteristics of retro reflecting materials is the specific coefficient of retro reflective luminance CRL, which determines the coefficient of retro reflectance of material under given illumination and ...
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Parametric Study of Light-Well Design for Day-Lighting Analysis under Clear Skies
... Previous research on the topic has demonstrated that the longer and narrower a lightwell is, the less efficient it becomes; the larger and wider it is, the larger illuminance it provides [3]. Kristl and Krainer ...
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Analysing efficiency of vertical transfer light pipe in medium depth building
... As energy crisis building industry becomes one of the effective parts of sustainable progress in communities, it guides us to provide efficient light, by using lightpipes as daylight guidance system. Evidances show that ...
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Lighting for subsidiary streets: investigation of lamps of different SPD. Part 1 - Visual Performance
... A colour naming task was carried out concurrently with semantic rating tests 4 applied to the lighting in a large room of dimensions 10.5m deep, 6.1m wide and 5.7m high. This was carried out under the same five light ...
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The neuronal basis of a sensory analyser, the acridid movement detector system I Effects of simple incremental and decremental stimuli in light and dark adapted animals
... A target moving against a contrasting background produces equal numbers of ON and OFF stimuli these terms are here used to refer to incremental and decremental changes in illuminance of [r] ...
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Changes in color vision with decreasing light level: separating the effects of normal aging from disease.
... light levels is more compromised in patients with early signs of ocular pathology [4] and the effects of mild acute hypoxia in normal subjects are also more detectable at lower light levels [5,6,46,47], it ...
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Road lighting for pedestrians: Effects of luminaire position on the detection of raised and lowered trip hazards
... Past studies investigating the effects of illuminance and SPD on the detection of peripheral obstacles Study Experimental design Participants Lighting conditions Task Observation period [r] ...
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Light and noise conditions of buildings for breeding dairy cows
... There should be technological lighting in the vis- ual field of animals 60 lx, independent of working lighting. It should work 14 h a day (Habel 1991). The value of illuminance in the animal stables is 50 lx ...
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Evidence for response contraction bias in side-by-side matching tasks
... the illuminance of the second stimulus until the two appear equal, as near as is possible, according to the prescribed visual ...the illuminance ratio is established, and the mean illuminance ratio ...
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