Results 111 to 120 of about 22,263 (163)

Transforming Health and Reducing Perinatal Anxiety Through Virtual Engagement: Protocol for a Randomized Controlled Trial.

open access: yesJMIR Res Protoc
Ponting C   +7 more
europepmc   +1 more source

Simple correlations between point daylight factor, average daylight factor and vertical daylight factor under all sky conditions and building design implications

Indoor and Built Environment, 2022
The customary method for calculating daylight illuminance in a building is the daylight factor approach, which is assumed under the conventional overcast sky. However, such an approach is not flexible enough to predict diffuse illuminance in the presence of non-overcast skies.
Danny H.W. Li   +3 more
openaire   +1 more source

Useful daylight illuminances: A replacement for daylight factors

Energy and Buildings, 2006
This paper describes the application of a new paradigm, called useful daylight illuminance (UDI), to assess daylight in buildings. The UDI paradigm is designed to aid the interpretation of climate-based analyses of daylight illuminance levels that are founded on hourly meteorological data for a period of a full year.
Azza Nabil, John Mardaljevic
openaire   +1 more source

Daylight factor meter

Journal of Scientific Instruments, 1960
A brief survey and criticism of existing methods of measuring daylight factors is followed by a description of an improved daylight factor meter, in which the current outputs of two photoelectric cells are compared by a null-balance method. When one cell is exposed inside the building and the other outside, the ratio of the illuminations at the two ...
openaire   +1 more source

A daylight factor integrator

Journal of Scientific Instruments, 1931
This instrument determines mechanically the illumination at a point on a horizontal surface due to the direct light from the sky visible at that point. The instrument is set up at the point, and a telescope incorporated in it is made to traverse the boundary of the visible sky.
openaire   +1 more source

A simple daylight factor meter

Journal of Scientific Instruments, 1954
A simple daylight factor meter, based on a commercially available foot-candle meter, is described. An adjustable sensitivity device enables the reading to be set to a fixed value when the instrument is directed towards the open sky, thus fixing the denominator of the daylight factor fraction.
J Longmore, R G Hopkinson
openaire   +1 more source

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