Results 21 to 30 of about 240,816 (302)

A Cortical Edge-integration Model of Object-Based Lightness Computation that Explains Effects of Spatial Context and Individual Differences

open access: yesFrontiers in Human Neuroscience, 2014
Previous work demonstrated that perceived surface reflectance (lightness) can be modeled in simple contexts in a quantitatively exact way by assuming that the visual system first extracts information about local, directed steps in log luminance, then ...
Michael E Rudd, Michael E Rudd
doaj   +1 more source

Sonification as a possible stroke rehabilitation strategy

open access: yesFrontiers in Neuroscience, 2014
Despite cerebral stroke being one of the main causes of acquired impairments of motor skills worldwide, well-established therapies to improve motor functions are sparse.
Daniel S. Scholz   +6 more
doaj   +1 more source

The Impact of Effective Microorganisms on Flesh Color and Chemical Composition of Raw Potato Tubers

open access: yesApplied Sciences, 2021
The objective of this study was to develop an innovative method of potato cultivation, with limited use of chemicals, for use in food processing.
Piotr Pszczółkowski   +3 more
doaj   +1 more source

Physical Characteristics of Small Space Objects at High Orbits Based on Optical Methods [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2017
Optical observation is one of the most common techniques used for characterizing the physical properties of unknown objects and debris in space. This research presents measurements and properties of the new object 96019 from ground-based optical ...
Afaf M. Abd El-Hameed   +2 more
doaj   +1 more source

Laser Focusing System for High Brightness Polarized Electron Source for SPLEEM [PDF]

open access: yes, 2007
For construction of a high brightness polarized electron source for SPLEEM (Spin Polarized Low Energy Electronic Microscope), a new transmission type photocathode has been developed at Nagoya Univ. In our scheme, a laser light is injected from backside
Monno, T.   +10 more
core   +1 more source

Lightness and brightness [PDF]

open access: yesCurrent Biology, 2007
What is lightness? Lightness is the perceptual dimension that runs from black, through gray, to white. The physical counterpart of lightness is the permanent property of a surface that determines what percentage of light the surface reflects. Surfaces that appear white reflect about 90% of the light striking them. Black surfaces reflect about 3%.
openaire   +2 more sources

Bright spine [PDF]

open access: yesJournal of General and Family Medicine, 2018
The spine is homogeneously osteosclerotic and which appears to have no particular abnormal findings, however, that was proved to be a result of multiple metastases from prostate cancer. We should consider the possibility of prostate cancer if we see a "bright spine" on X-ray examination.
Ogushi, Akihiko   +2 more
openaire   +2 more sources

Snow stratigraphic heterogeneity within ground-based passive microwave radiometer footprints: implications for emission modeling [PDF]

open access: yes, 2014
Two-dimensional measurements of snowpack properties (stratigraphic layering, density, grain size and temperature) were used as inputs to the multi-layer Helsinki University of Technology (HUT) microwave emission model at a centimeter-scale horizontal ...
Sandells, Melody   +7 more
core   +1 more source

Determining the relationship between cognitive performance and LED lamp color temperature and personality type in students [PDF]

open access: yesInternational Journal of Industrial Engineering and Production Research, 2023
Background: The lighting of the work environment and its quantitative and qualitative characteristics, such as the intensity of the light and the color temperature, as a physical characteristic, have a great impact on the mental health, behavior and ...
hamed alizadeh   +4 more
doaj  

Characteristics of Photon Beam and Preservation of Coherence in Fourth-Generation Light Sources

open access: yesApplied Sciences, 2021
Fourth-generation storage rings (4GSRs) that exploit the multi-bend achromat lattice concept may be able to surpass the brightness and coherence that are attained using the present third-generation storage rings.
Bonghoon Oh   +4 more
doaj   +1 more source

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