A holistic approach to daylight dynamics in our built environment can have beneficial outcomes for both physiological and visual effects on humans. Simulations of how variables affect light levels the horizontal work plane are compared their effects, measured as melanopic EDI (Melanopic Equivalent Daylight Illuminance) a vertical plane. The were calculated simulated office space ALFA software (...

To study the characteristics of light and dark adaptation in tunnel portals, to determine influencing factors light–dark vision adaptation, basic lighting linear design data were obtained. In this study, we used a light-shielded tent simulate environment tunnel, observe driver recognition time for target objects during process, analyze human vision. Based on experimental data, examined relation...

NURBS surface representation, combined with Differential Evolution (DE), enables us to perform automated non-imaging reflector design. The overall result is a simple automated nonimaging reflector design technique and only a little data such as desired illuminance distribution and searching limits are needed. Merit functions specific to non-imaging reflector design are presented. Using differen...

This paper presents an experimental study with 47 participants on the influence of lighting on performance and well-being in an office environment. Well-being, alertness and performance were evaluated and measured in two rooms with artificial lighting and one room with day lighting. The evaluations were correlated to cortisol/melatonin saliva samples, illuminance and spectral composition of the...

This paper reports accurate measurements of the radiation characteristics and optical properties of Nannochloropsis oculata in the photosynthetically active radiation (PAR) region. These marine microalgae were grown in 2 cm thick culture bottles with vented caps exposed, on one side, to either white fluorescent light bulbs or red LEDs emitting at 630 nm. The illuminance varied from 2000 to 10,0...

This paper proposes a novel entropy-weighted Gabor-phase congruency (EWGP) feature descriptor for head-pose estimation on the basis of feature fusion. Gabor features are robust and invariant to differences in orientation and illuminance but are not sufficient to express the amplitude character in images. By contrast, phase congruency (PC) functions work well in amplitude expression. Both illumi...

The present study investigates the effect of fixed external shading devices’ geometry on thermal comfort, daylighting and energy demand for cooling heating in hot dry climate city Ghardaïa (Algeria). A parametric analysis was performed by using three software: RADIANCE 2.0 DAYSIM 3.1 simulation TRNSYS.17 dynamic simulation. Three device parameters were assessed: spacing between slats, tilted an...

The purpose of this study is to examine the relationship between “visibility from inside” and “estimated visibility outside” factors that affect in various lighting environments windows order predict visual privacy. From results experiments actual housing complex laboratory, it was found linear relation established for all types window treatment. unaffected by condition, shape, or evaluation po...