from applied linguistic point of view, the fundamental question facing the language teachers, methodologists and course designers is which procedure is more effective in fl/sl: learning to use or using to learn? definitely, in order to be a competent language user, knowledge of language system is necessary, but it is not sufficient to be a successful language user. that is why there was a gradu...

During the past decade, residential consumers’ adoption of energy-efficient lighting has increased slowly in the United States. To identify residential consumers’ attitudes and behaviors toward the adoption of energy-efficient lighting, this study examined gender differences in (1) residential consumers’ environmental behaviors in relation to lighting practice and (2) background variables of en...

Light emitting diodes (LEDs) and SSL (solid state lighting) are relatively new light sources, but are already widely applied for outdoor lighting. Despite this, there is little available information allowing planners and designers to evaluate and weigh different sustainability aspects of LED/SSL lighting when making decisions. Based on a literature review, this paper proposes a framework of sus...

High quality artificial lighting of public places is one the necessary functions sustainable cities. It much more than just providing sufficient light intensity with reduced energy consumption and low environmental impact. The solution to this challenge not only technological, but also requires consideration subjective approach, such as psychological, sociological, aesthetic-functional. article...

The adoption of energy efficiency measures in building codes places constraints on lighting designers that they fear will reduce the quality of the lit environment. This experiment was designed to test the hypothesis that lighting quality, as understood by lighting designers, affects the task performance, mood, comfort, health, and aesthetic judgements of office workers. Nine lighting systems w...

Subsurface scattering and light transport in volumetric media are critical to achieve a realistic depiction of a material. We describe several analytical approximations and methods for volumetric light transport in media of various optical properties that are efficient and easy to compute. Most natural materials exhibit a sudden surge in brightness called the opposition effect around the zero p...

In order to find out appropriate lighting levels to create safe nighttime street environments, the nature of the relationships between pedestrian behaviour and lighting (illuminance) levels was explored using the PAMELA facility at University College London. The behaviour examined was the avoidance of collision with another pedestrian or an obstacle, and the facial recognition distance and the ...

Day lighting is one of the important qualitative factors in housing, which is also effective on health and well-being of occupants. Extensive glass surfaces and Transparency in building facades provides good daylight quantity for interior spaces. However, this lighting system is not appropriate for climates faced with higher sunlight radiation (Such as hot-humid areas), due to overheating and d...