نتایج جستجو برای: daylight metrics

تعداد نتایج: 69027  

2010
Yannick Benezeth Pierre-Marc Jodoin Bruno Emile Hélène Laurent Christophe Rosenberger

In this paper, we propose a human detection process using Far-Infrared (FIR) and daylight cameras mounted on a stereovision setup. Although daylight or FIR cameras have long been used to detect pedestrians, they nonetheless suffer from known limitations. In this paper, we present how both can collaborate inside a stereovision setup to reduce the false positive rate inherent to their individual ...

2012
M. Sadeghipour C. R. Drew Adrian Smith Gordon Gill

Climate-Based Daylight Modelling (CBDM) is a methodology that allows the prediction of several measures of daylight using the sky condition from location specific meteorological data. CBDM was originally used as a means for predicting indoor daylight availability and intensity. Since the scalability of the method has been proved it has been applied at different architectural scales for differen...

2004
P. C. Chou K. F. Chang

Because of the characteristics of the subtropical climate in Taiwan, the abundant daylight can be applied well on the savings of the lighting power. This study was to figure out the illumination environment indoors and to introduce the daylight as far as the inner part of rooms. The field measurement and numerical simulation were adopted. A nine-channel photometer was used to measure the illumi...

Journal: :Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine 2014
Mohamed Boubekri Ivy N Cheung Kathryn J Reid Chia-Hui Wang Phyllis C Zee

STUDY OBJECTIVE This research examined the impact of daylight exposure on the health of office workers from the perspective of subjective well-being and sleep quality as well as actigraphy measures of light exposure, activity, and sleep-wake patterns. METHODS Participants (N = 49) included 27 workers working in windowless environments and 22 comparable workers in workplaces with significantly...

Journal: :Veterinary and comparative orthopaedics and traumatology : V.C.O.T 2017
Erin M Katz Ruth M Scott Christopher B Thomson Eileen Mesa Richard Evans Michael G Conzemius

Objective To determine if environmental variables affect the average daily activity counts (AC) of dogs with osteoarthritis (OA) and/or owners' perception of their dog's clinical signs or quality of life. Methods The AC and Canine Brief Pain Inventory (CBPI) owner questionnaires of 62 dogs with OA were compared with daily environmental variables including the following: average temperature (°C)...

Journal: :ecopersia 2013
hamid reza kamyab abdolrassoul salman mahiny

logistic regression (lr) was used to model urban growth between the years 1987 and 2001 in gorgan city, north east of iran. three groups of variables including economic-social, land use and biophysical variables were used in the modeling practice. using covariance of the independent variables, distance to administrative and sporting centers plus distance to cities were removed. roc (relative op...

Journal: :iranian journal of science and technology (sciences) 2008
n. sadegh-zadeh

the main objective of this paper is to find the necessary and sufficient condition of a given finslermetric to be einstein in order to classify the einstein finsler metrics on a compact manifold. the consideredeinstein finsler metric in the study describes all different kinds of einstein metrics which are pointwiseprojective to the given one. this study has resulted in the following theorem tha...

2016
Annika K. Jägerbrand Jonas Sjöbergh

Light conditions are known to affect the number of vehicle accidents and fatalities but the relationship between light conditions and vehicle speed is not fully understood. This study examined whether vehicle speed on roads is higher in daylight and under road lighting than in darkness, and determined the combined effects of light conditions, posted speed limit and weather conditions on driving...

Journal: :Journal of photochemistry and photobiology. B, Biology 2008
A V Parisi J Turner D J Turnbull P Schouten N Downs

The research question of whether there are any influences in the scattered or diffuse erythemal UV exposures to a horizontal plane over a five month period due to the change from standard time to daylight saving time, has been investigated by using physical measurements and applying them to both standard time and daylight saving time. The diffuse erythemal UV was considered for fixed lunch brea...

2013
Friedrich Edelhäuser Florian Hak Ullrich Kleinrath Birgit Lühr Peter F. Matthiessen Johannes Weinzirl Dirk Cysarz

Background. Light exposure to the eye can influence different physiological functions, for example, the suprachiasmatic nucleus (SCN). By affecting the autonomic nervous system, the SCN may influence the heart rate variability (HRV). Standardized colored light exposure alters HRV but the results are inconsistent. In this study we investigated the effects of nonstandardized red light (approx. 64...

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