Results 131 to 140 of about 2,016,170 (332)
Troxler Fading, Eye Movements, and Retinal Ganglion Cell Properties
i-Perception, 2014 We present four movies demonstrating the effect of flicker and blur on the magnitude and speed of adaptation for foveal and peripheral vision along the three color axes that isolate retinal ganglion cells projecting to magno, parvo, and konio layers of ...
Romain Bachy, Qasim Zaidi
doaj +1 more source
CalibratedgrizMagnitudes of Tycho Stars: All-Sky Photometric Calibration Using Bright Stars [PDF]
Publications of the Astronomical Society of the Pacific, 2008 Photometric calibration to 5% accuracy is frequently needed at arbitrary celestial locations; however, existing all-sky astronomical catalogs do not reach this accuracy and time consuming photometric calibration procedures are required. I fit the Hipparcos B_T and V_T magnitudes along with the 2MASS J, H, and K magnitudes of Tycho-2 catalog-stars with ...
openaire +3 more sources
Bright filter-free source of indistinguishable photon pairs
, 2008 We demonstrate a high-brightness source of pairs of indistinguishable photons based on a type-II phase-matched doubly-resonant optical parametric oscillator operated far below threshold.
A. Cerè +27 more
core +1 more source
Photoswitchable Conductive Metal–Organic Frameworks
Advanced Functional Materials, EarlyView.A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu +5 more
wiley +1 more source
A flat faint end of the Fornax cluster galaxy luminosity function
, 2007 We analyse the photometric properties of the early-type Fornax cluster dwarf galaxy population (M_V>-17 mag), based on a wide field imaging study of the central cluster area in V and I band-passes with IMACS/Magellan at Las Campanas Observatory.
C. Mendes de Oliveira +7 more
core +1 more source
Advanced Functional Materials, EarlyView.Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song +4 more
wiley +1 more source
MULTISCALE DIFFERENTIAL METHOD FOR DIGITAL IMAGE SHARPENING [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2014 We have proposed and tested a novel method for digital image sharpening. The method is based on multi-scale image analysis, calculation of differential responses of image brightness in different spatial scales, and the subsequent calculation of a ...
Vitaly V. Bezzubik +4 more
doaj
METHODS FOR CORRECTING TOPOGRAPHICAL EFFECTS IN SATELLlTE DATA
Forestist, 2006 Topography affects magnitude of energy reflected from the terrain to the sensor. which causes radiometric distortion in satellite data. Because of different topographic conditions, same objects show different brightness values in the image.
Ayhan KOÇ, Hakan YENER, H. Oğuz ÇOBAN
doaj +1 more source
Analysis of the Gaia Data Release 3 Parallax Bias at Bright Magnitudes
The Astronomical JournalAbstract The combination of visual and spectroscopic orbits in binary systems enables precise distance measurements without additional assumptions, making them ideal for examining the parallax zero-point offset (PZPO) at bright magnitudes (G < 13) in Gaia.
Ye Ding +3 more
openaire +3 more sources
, 1998 AgapeZ1 is the brightest and the shortest duration microlensing candidate event found in the Agape data. It occured only 42" from the center of M31. Our photometry shows that the half intensity duration of the event6 is 4.8 days and at maximum brightness
Ansari, R. +16 more
core