The issues of realistically rendering naturally illuminated scenes at night are examined. This requires accurate models for moonlight, night skylight, and starlight. In addition, several issues in tone reproduction are discussed: eliminatiing high frequency information invisible to scotopic (night vision) observers; representing the flare lines around stars; determining the dominant hue for the...

background: this study compared the sleep quality and sleepiness in day workers and shift workers. sleep quality and sleepiness in staff nurses were significantly different than employees . shift work is an important factor influencing the sleep quality and sleepiness of nurses. the aim of the present research was to compare three groups: (1) nurses with shiftwork; (2) nurses without shiftwork ...

In normal subjects the later part of the cone a-wave to a brief flash increases in amplitude after 50-100 ms darkness due to a contribution from secondary hyperpolarising cells. We recorded these responses along with clinical ON and OFF ERGs in patients with inner retinal dysfunction to see if this part of the a-wave is affected. Patients with autoimmune-like retinopathy and CSNB2 had abnormal ...

the purpose of this study was the effect of time of training and first night of sleep on implicit (accuracy) and motor (timing) components of timed motor sequences task (tmst) enhancement. forty-eight right-handed students (19-25 years old), who have had adequate sleep quality, were divided into three equal groups according to purdue hand and fingers' fine motor skills test and simple reac...

Fear of the dark is a common complaint of pre-teenage children. 2 It should not be confused with night terrors or panics, in which a child becomes acutely agitated and terror-struck at night, appearing to be awake while in fact asleep and unable to be woken. 4 In contrast, fear of the dark can be experienced by the conscious child in dimly lit or dark conditions. When such fear is excessive it ...

Human presence and accordingly establishing suitable condition for social interactions are important factors in shaping urban spaces. Caring to different aspects of improving environmental qualities especially perception aspect and ease of perception from the environment with legibility improvement is an element that was emphasized from the base of urban design. The role of time, commence of da...

research has shown that shift work, in particular night work, can have negative effects on the health, safety and well-being of workers. our study assessed, in a hospital setting, the effects of bright light (bl) on general health and psychological problems during night shift work. in an experimental design, 15 female nurses at a general hospital that located in tehran were exposed to moderate ...

This paper develops the use of the concept of atmosphere in an ‘assemblage urbanism’ approach, as a way of reevaluating how we understand the night-time city. In doing so, this paper rejects what it sees as an overuse of the term ‘night-time economy’ as a synonym for ‘urban night’. Instead, it seeks to describe the night-time city center as an affective atmosphere, emerging from the arranging o...