. light is an environmental factor, which has profound influences on broilers performance and frequently overlooked management practices. this study was conducted to compare the effects of different lighting programs on growth, carcass parts and economical performance using 320 one day–old broilers (arian 386) in completely randomized design with 4 treatments and 8 replicates per each treatment...

In lighting studies with turkey hens, long ahemeral (AH; non-24 h) light-dark cycles have consistently resulted in greater, although not statistically significant, fertility than control 24 h light-dark cycles. The present study was designed to further evaluate AH lighting effects on fertility by an evaluation of the effectiveness of artificial insemination (AI) under less than optimal conditio...

Behavioural models derived from on-going field studies can provide the basis for predicting personal action taken to adjust lighting levels, remedy direct glare, and save energy in response to physical conditions. Enabling these behavioural models in advanced lighting simulation programs, such as DAYSIM and the Lightswitch Wizard, allows for a more realistic estimate of lighting use under dynam...

An experiment in a mock-up office space gave occupants control over dimmable lighting circuits after a day working under pseudo-random lighting conditions. Data analysis indicated that the lighting experienced during the day influenced the changes in lighting made at the end of the day. Occupants chose to reduce screen glare if any existed. Even after allowing for the effect of glare, desktop i...

We show how to actively compute qualitative shape properties directly from image intensities that is, without having to rst \reconstruct the surface". Our approach diverges from classical active shape from shading [1] in two important ways. First, we do not attempt to compute a dense depth map of the surface. We rather detect the presence of certain qualitative geometric features. Second, we us...

Augmented Reality (AR) is the means of using a combination of hardware and software to enhance a person's vision of the world with useful information about his/her surroundings. In recent years, there have been many different implementations of Augmented Reality. The vast majority of these implementations have assumed that lighting conditions are static, usually in an indoor or outdoor environm...

Many previous works on photometric stereo have shown how to recover the shape and reflectance properties of an object using multiple images taken under a fixed viewpoint and variable lighting conditions. However, most of them only dealt with a single point light source in each image. In this paper, we show how to perform photometric stereo with four images which are taken under distant but gene...

A gait experiment was performed. The participants were tested under shoes, floors, surface and lighting conditions. They gave floor slipperiness ratings before and after a gait trial. The perceived sense of slip (PSOS) was collected. It was found that the perceived floor slipperiness (PFS) before walking was affected significantly by the lighting, floor and surface conditions. Relative low PFS ...