Results 271 to 280 of about 11,447,501 (301)

Supra‐threshold contrast matching and the effects of contrast threshold and age

Clinical and Experimental Optometry, 2007
The effects of age on contrast threshold are well known but little is known about its effect on supra-threshold contrast perception. This study examines supra-threshold contrast matching and the effects of age in naïve observers.Two age groups (from 20 to 50 years with 14 subjects and 51 years and older with 15 subjects) participated in the study ...
Ming, Mei, Susan J, Leat, Jeffery, Hovis
openaire   +2 more sources

Effects of rod activity on color threshold

Vision Research, 1976
Abstract The specific thresholds of blue and red lights, measured extrafoveally in a dark-adapted state, were obtained at intensities below the cone-plateau level of the long-term dark-adaptation curve, while the specific thresholds of green lights were obtained at intensities above the cone-plateau level.
B, Stabell, U, Stabell
openaire   +2 more sources

Resonances and Threshold Effects

1980
Much of the energy-dependent structure observed in low-energy electron scattering arises from resonances and threshold effects. Resonances are due to nearly bound states of the (N + 1)-electron system of target atom and external electron. In a time-dependent formalism, such a state decays with a finite lifetime if it interacts with states in an ...
openaire   +1 more source

Influence of threshold selection in modeling peaks over threshold based nonstationary extreme rainfall series

Journal of Hydrology, 2021
V Agilan
exaly  

The Effect of Aging on Olfactory Threshold

Journal of Gerontology, 1963
G M, KIMBRELL, E, FURCHTGOTT
openaire   +2 more sources

Characteristic analysis of Otsu threshold and its applications

Pattern Recognition Letters, 2011
Shengzhou Xu
exaly  

Background and threshold: critical comparison of methods of determination

Science of the Total Environment, 2005
Peter Filzmoser, Clemens Reimann, Robert G Garrett   +2 more
exaly  

Improving the Reliability of Testing the Speech Reception Threshold for Sentences

International Journal of Audiology, 1979
R Plomp
exaly  

Towards operational guidelines for over-threshold modeling

Journal of Hydrology, 1999
Michel Lang, T B M J Ouarda, B Bobée
exaly  

Threshold Effects in Online Group Buying

Management Science, 2015
Mengze Shi, Jiahua Wu
exaly