Results 41 to 50 of about 46,927 (198)

Modelling of the Luminance Coefficient in the Light Scattered by a Mineral Mixture Using Machine Learning Techniques

open access: yesApplied Sciences
The primary objective of the research and analysis reported in this article was to determine an effective method for predicting the luminance coefficient of the mineral mixture for asphalt concrete and stone mastic asphalt.
Grzegorz Mazurek   +2 more
doaj   +1 more source

Wavelet-Based Local Contrast Enhancement for Satellite, Aerial and Close Range Images

open access: yesRemote Sensing, 2017
The methods used for image contrast enhancement in the wavelet domain have been previously documented. The essence of these methods lies in the manipulation of the image during the reconstruction process, by changing the relationship between the ...
Krystian Pyka
doaj   +1 more source

Low-level and high-level modulations of fixational saccades and high frequency oscillatory brain activity in a visual object classification task

open access: yesFrontiers in Psychology, 2013
Until recently induced gamma-band activity (GBA) was considered a neural marker of cortical object representation. However induced GBA in the electroencephalogram (EEG) is susceptible to artifacts caused by miniature fixational saccades.
Maciej eKosilo   +7 more
doaj   +1 more source

Street lighting a basic component of modern road infrastructure and traffic [PDF]

open access: yesJournal of Research and Innovation for Sustainable Society
. Road safety is now a priority for all international bodies, and reducing road fatalities has been accepted as a key objective by both the United Nations and the European Union.
Gheorghe Neamțu, Marinela Ință
doaj  

LED (Light-Emitting Diode) Road Lighting in Practice: An Evaluation of Compliance with Regulations and Improvements for Further Energy Savings

open access: yesEnergies, 2016
Light-emitting diode (LED) road lighting has been widely implemented in recent years, but few studies have evaluated its performance after installation.
Annika K. Jägerbrand
doaj   +1 more source

BOLD responses in human primary visual cortex are insensitive to substantial changes in neural activity

open access: yesFrontiers in Human Neuroscience, 2013
The relationship between BOLD-fMRI (blood oxygenation level dependent-functional magnetic resonance imaging) and magnetoencephalography (MEG) metrics were explored using low-level visual stimuli known to elicit a rich variety of neural responses. Stimuli
Jennifer Blanche Swettenham   +2 more
doaj   +1 more source

Extremely Luminous Atmospheres [PDF]

open access: yesInternational Astronomical Union Colloquium, 1999
AbstractWe present the effects that inhomogeneities have on radiating atmospheres. It is shown that nonuniformities in a medium induce a reduction of the effective opacity which subsequently increases the Eddington Luminosity. The most striking effect however that arises from the dependence of the opacity on the inhomogeneities, is the possibility of a
openaire   +1 more source

Visual Surround Suppression in Schizophrenia

open access: yesFrontiers in Psychology, 2013
Compared to unaffected observers patients with schizophrenia (SZ) show characteristic differences in visual perception, including a reduced susceptibility to the influence of context on judgments of contrast – a manifestation of weaker surround ...
Marc S. Tibber   +12 more
doaj   +1 more source

Luminous

open access: yes, 2018
As an observer, I have enjoyed the momentary happenings of the world. In India, I have watched shimmering waves from the shores of the Bay of Bengal. In Utah, I have admired gleaming sunlight on freshly fallen snow on the mountains. Peering into the kiln at peak temperature I have been in awe of the bright white light.
openaire   +3 more sources

Are We Luminous?

open access: yesPhilosophy and Phenomenological Research, 2013
Since its appearance over a decade ago, Timothy Williamson's anti‐luminosity argument has come under sustained attack. Defenders of the luminous overwhelmingly object to the argument's use of a certain margin‐for‐error premise. Williamson himself claims that the premise follows easily from a safety condition on knowledge together with his description ...
openaire   +3 more sources

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