Results 31 to 40 of about 41,472 (242)

A FEAST Algorithm for the Linear Response Eigenvalue Problem

Algorithms, 2019
In the linear response eigenvalue problem arising from quantum chemistry and physics, one needs to compute several positive eigenvalues together with the corresponding eigenvectors.
Zhongming Teng, Linzhang Lu
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Targeting multi-loop integrals with neural networks

SciPost Physics, 2022
Numerical evaluations of Feynman integrals often proceed via a deformation of the integration contour into the complex plane. While valid contours are easy to construct, the numerical precision for a multi-loop integral can depend critically on the ...
Ramon Winterhalder, Vitaly Magerya, Emilio Villa, Stephen P. Jones, Matthias Kerner, Anja Butter, Gudrun Heinrich, Tilman Plehn
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An Event-Related Potential Examination of Contour Integration Deficits in Schizophrenia

Frontiers in Psychology, 2013
Perceptual organization, which refers to the ability to integrate fragments of stimuli to form a representation of a whole edge, part, or object, is impaired in schizophrenia. A contour integration paradigm, involving detection of a set of Gabor patches
Pamela D Butler, Pamela D Butler, Pamela D Butler, Ilana Y Abeles, Ilana Y Abeles, Ilana Y Abeles, Steven M Silverstein, Steven M Silverstein, Elisa C Dias, Elisa C Dias, Elisa C Dias, Nicole G Weiskopf, Nicole G Weiskopf, Daniel C Calderone, Daniel C Calderone, Daniel C Calderone, Pejman eSehatpour, Pejman eSehatpour   +17 more
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Low level constraints on dynamic contour path integration. [PDF]

PLoS ONE, 2014
Contour integration is a fundamental visual process. The constraints on integrating discrete contour elements and the associated neural mechanisms have typically been investigated using static contour paths.
Sophie Hall, Patrick Bourke, Kun Guo
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RPExpand: Software for Riesz projection expansion of resonance phenomena

SoftwareX, 2021
We present the software RPExpand for modal expansions of physical observables in resonant systems. The software is implemented in MATLAB® and uses Riesz projections to compute the expansion terms.
Fridtjof Betz, Felix Binkowski, Sven Burger   +2 more
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Asymptotic Expansions for Large Degree Tangent and Apostol-Tangent Polynomials of Complex Order

Journal of Applied Mathematics, 2023
This paper provides asymptotic expansions for large values of n of tangent Tnμz and Apostol-tangent Tnμz;λ polynomials of complex order. The derivation is done using contour integration with the contour avoiding branch cuts.
Cristina B. Corcino, Roberto B. Corcino, Jeremar Casquejo   +2 more
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Gamma frequency transcranial alternating current stimulation over the visual cortex modulates contour integration

Frontiers in Cognition
IntroductionThe visual system must integrate spatially fragmented information to perceive coherent object boundaries. Contour integration represents a fundamental process underlying this perceptual organization by linking discrete edge elements into ...
Yosun Yoon, Yosun Yoon, Sang Wook Hong, Sang Wook Hong   +3 more
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CONSISTENCY MATCHING IN THE INTEGRATION OF CONTOUR AND RIVER DATA BY SPATIAL KNOWLEDGE [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
As the representation of terrain surface and height information, the contour data has the strict constraint relationship with the distribution of river network.
T. Ai, M. Yang
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DIGITAL ELEVATION MODEL INTERPOLATION BY FUSION OF MORPHOLOGICAL RECONSTRUCTION AND DISTANCE TRANSFORMATION [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Interpolation methods have significant impacts on the accuracy of the digital elevation model (DEM) from contours which are one of frequently employed data sources.
J. Shen, W. L. Han, J. Ge, L. B. Zhang, H. Tan   +4 more
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Brain networks supporting perceptual grouping and contour selection

Frontiers in Psychology, 2014
The human visual system groups local elements into global objects seemingly without effort. Using a contour integration task and EEG source level analyses, we tested the hypothesis that perceptual grouping requires a top-down selection, rather than a ...
Gregor eVolberg, Mark W. Greenlee
doaj   +1 more source