Results 71 to 80 of about 664,049 (296)

Releasing aperture filter constraints [PDF]

, 2007
Aperture filters are a recently introduced class of nonlinear filters used in image processing. In this paper we present a new approach for aperture filter design, improving operator performance with respect to the MSE measure by releasing some of the ...
Marshall, S.
core  

Galaxy-galaxy(-galaxy) lensing as a sensitive probe of galaxy evolution

, 2012
The gravitational lensing effect provides various ways to study the mass environment of galaxies. We investigate how galaxy-galaxy(-galaxy) lensing can be used to test models of galaxy formation and evolution.
Adelman-McCarthy, Bardeen, Bartelmann, Bett, Bower, Brainerd, Colless, Cooray, Crittenden, Croton, de la Torre, De Lucia, Dekel, Font, Frigo, Gladders, Guo, H. Saghiha, Hilbert, Hoekstra, Jullo, Kaiser, Kauffmann, Kim, Kleinheinrich, Le Fèvre, Li, Mandelbaum, Mandelbaum, McBride, Mo, P. Schneider, P. Simon, S. Hilbert, Schneider, Schneider, Schneider, Schneider, Schneider, Simon, Simon, Springel, Springel, Strateva, van Uitert, van Waerbeke, White   +46 more
core   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

Advanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr, Alexander Biewald, Andre Mähringer, Thaddäus J. Koller, Peter Mayer, Markus Döblinger, Achim Hartschuh, Dana D. Medina   +7 more
wiley   +1 more source

An Impedance Model for Angle-Dependent Sound Reflection and Absorption with Diffraction Effects

Acoustics
Traditionally, an open window is considered a kind of reference for perfect sound absorption. The sound reflection and absorption of an aperture is analyzed by means of an impedance model representing a rectangular absorbing surface surrounded by a thin,
Jens Holger Rindel
doaj   +1 more source

Bimanual Reach to Grasp Movements in Youth With and Without Autism Spectrum Disorder

Frontiers in Psychology, 2019
Reaching and grasping (prehension) is one of the earliest developing motor skills in humans, but continued prehension development in childhood and adolescence enables the performance of increasingly complex manual tasks.
Rachel A. Rodgers, Brittany G. Travers, Andrea H. Mason   +2 more
doaj   +1 more source

Power losses in optical part of the link working in free space [PDF]

, 2011
Tato diplomová práce pojednává o charakteristikách laserových diod, difrakcí a o vlastnostech gausovského svazku. Je určen útlum vazby vysílací dioda - vysílací apertura v závislosti na velikostech apertury a na velikosti svazku v programu MATLAB.
Szajkó, Juraj
core  

Polarimetric Calibration of Large-Aperture Telescopes II: The sub-aperture method

, 2004
A new method for absolute polarimetric calibration of large telescopes is presented. The proposed method is highly accurate and is based on the calibration of a small sub-aperture, which is then extended to the full system by means of actual observations
Hector Socas-Navarro, Keil, Keller, Lites, Lites, Skumanich, Socas-Navarro, Volkmer   +7 more
core   +2 more sources

Photoswitching Conduction in Framework Materials

Advanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez, Stefan Hecht, Wolfgang Wenzel, Lars Heinke, Mariana Kozlowska   +4 more
wiley   +1 more source

Circular‐Polarization‐Sensitive Organic Photodetectors with a Chiral Nanopatterned Electrode Inverse‐Designed by Genetic Algorithm

Advanced Functional Materials, EarlyView.
A chiral photodetector capable of selectively distinguishing left‐ and right‐handed circularly polarized light is experimentally demonstrated. The device, which features a nanopatterned electrode inverse‐designed by a genetic algorithm within a metal–dielectric–metal nanocavity that incorporates a vacuum‐deposited small‐molecule multilayer, exhibits ...
Kyung Ryoul Park, Jewoong Lee, In‐Suk Choi, Changsoon Kim   +3 more
wiley   +1 more source

Design and Simulation of a Frequency-Diverse Aperture for Imaging of Human-Scale Targets

IEEE Access, 2016
We present the design and simulation of a frequency-diverse aperture for imaging of human-size targets at microwave wavelengths. Predominantly relying on a frequency sweep to produce diverse radiation patterns, the frequency-diverse aperture provides a ...
Okan Yurduseven, Jonah N. Gollub, Alec Rose, Daniel L. Marks, David R. Smith   +4 more
doaj   +1 more source