• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.8
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• pp.5619-5626
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• 2015

The zenithal light is the one that is entered down into the interior space or the spaces such as the inner court, through windows high located in the wall or openings of the roof. The aim of this study is to analyze the types of mechanism for the zenithal light by studying some examples related to the zenithal opening, and to investigate those characteristics. One of the most important features is a structural unit of the skylight entering the room. In this study, according to the structural unit, the direct light type, the duct-type and the shade type was distinguished, and each type can be divided into several modified types. Precisely, the direct light type is divided into an unexposed type and an exposed type of the source of light. The duct type is also divided into an intensive duct type and a distributed duct type. The shade type is classified into a ceiling surface shade, a reflections objet shade, a double ceiling shade and a wall shade.

• 한국정보디스플레이학회:학술대회논문집
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• 2006.08a
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• pp.1711-1714
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• 2006

Anchoring energy of liquid crystals on solid substrates is a key parameter in liquid crystal technology. A nonperturbative method of its measurement by dynamic light scattering on thermal orientational fluctuations is presented, The ratio of the zenithal and azimuthal anchoring coefficients is shown to be equal to the ratio of the orientational elastic constants.