Results 41 to 50 of about 1,153 (197)

Black in Impressionism and Post‐Impressionism: Art, Color Vision, and Psychophysics

Color Research &Application, Volume 51, Issue 3, May/June 2026.
Black has engendered controversy in 19th Century color theory and in Impressionist and Post‐Impresssionist painting. The neural mechanisms of blackness perception are being revealed through contemporary psychophysics. ABSTRACT From Paleolithic cave art to modern abstraction, artists have used black not merely as a neutral tone, but as a powerful ...
John S. Werner
wiley   +1 more source

Parallel N‐Body Simulation Based on the PM and P3M Methods Using Multigrid Schemes in conjunction with Generic Approximate Sparse Inverses

Mathematical Problems in Engineering, Volume 2015, Issue 1, 2015., 2015
During the last decades, Multigrid methods have been extensively used for solving large sparse linear systems. Considering their efficiency and the convergence behavior, Multigrid methods are used in many scientific fields as solvers or preconditioners.
P. E. Kyziropoulos, C. K. Filelis-Papadopoulos, G. A. Gravvanis, Yuming Qin   +3 more
wiley   +1 more source

ESPACIO, TIEMPO Y PERSPECTIVA EN LA CONSTRUCCIÓN DE LA MIRADA ARQUITECTÓNICA CONTEMPORÁNEA: DE HOCKNEY A MIRALLES

EGA, 2010
Resumen no disponible.
Montserrat Bigas Vidal, Luis Bravo Farré, Gustavo Contepomi   +2 more
doaj   +1 more source

Loading Non‐Maxwellian Velocity Distributions in Particle Simulations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Numerical procedures for generating non‐Maxwellian velocity distributions in particle simulations are presented. First, Monte Carlo methods for the (r,q) $(r,q)$ distribution that generalizes flattop and Kappa distributions are discussed. Then, two rejection methods for the regularized Kappa distribution are presented, followed by a comparison
Seiji Zenitani, Shunsuke Usami, Shuichi Matsukiyo   +2 more
wiley   +1 more source

Numerical Simulation of the Time Evolution of Small‐Scale Irregularities in the F‐Layer Ionospheric Plasma

International Journal of Geophysics, Volume 2011, Issue 1, 2011., 2011
Dynamics of magnetic field‐aligned small‐scale irregularities in the electron concentration, existing in the F‐layer ionospheric plasma, is investigated with the help of a mathematical model. The plasma is assumed to be a rarefied compound consisting of electrons and positive ions and being in a strong, external magnetic field.
O. V. Mingalev, G. I. Mingaleva, M. N. Melnik, V. S. Mingalev, Lucilla Alfonsi   +4 more
wiley   +1 more source

Textual cues, visual fictions: representations of homosexualities in the works of David Hockney [PDF]

, 2011
This thesis is concerned with representations of homosexual themes and subjects in the works of David Hockney (b. 1937). A male, homosexual British artist, Hockney came of age during a period in which homosexual acts between males remained criminalised ...
Porter-Salmon, Emily
core  

Efficient Probabilistic and Geometric Anatomical Mapping Using Particle Mesh Approximation on GPUs

International Journal of Biomedical Imaging, Volume 2011, Issue 1, 2011., 2011
Deformable image registration in the presence of considerable contrast differences and large size and shape changes presents significant research challenges. First, it requires a robust registration framework that does not depend on intensity measurements and can handle large nonlinear shape variations.
Linh Ha, Marcel Prastawa, Guido Gerig, John H. Gilmore, Cláudio T. Silva, Sarang Joshi, Aly A. Farag   +6 more
wiley   +1 more source

Electrostatic Charging of Lunar Cavities Governed by the Flow‐to‐Thermal Speed Ratio: 3D PIC Simulations and a Free‐Fall Model

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract We use Particle‐In‐Cell (PIC) simulations to investigate the charging characteristics inside deep cavities on the lunar surface under the solar wind plasma conditions. Specifically, we systematically study the dependence of the cavity bottom potential on plasma flow velocity and cavity aspect ratio.
J. Nakazono, Y. Miyake, W. J. Miloch
wiley   +1 more source

A Novel Parallel Algorithm Based on the Gram‐Schmidt Method for Tridiagonal Linear Systems of Equations

Mathematical Problems in Engineering, Volume 2010, Issue 1, 2010., 2010
This paper introduces a new parallel algorithm based on the Gram‐Schmidt orthogonalization method. This parallel algorithm can find almost exact solutions of tridiagonal linear systems of equations in an efficient way. The system of equations is partitioned proportional to number of processors, and each partition is solved by a processor with a minimum
Seyed Roholah Ghodsi, Mohammad Taeibi-Rahni, David Chelidze   +2 more
wiley   +1 more source

Performance Evaluation and Optimization of Operating System for Domestic Supercomputer [PDF]

Jisuanji kexue
Supercomputers play a crucial role in supporting scientific computing applications.During these five years,our country is developing post-exascale domestic supercomputers.As one of the core components of supercomputers,the operating system's overhead ...
GAO Yiqin, LUO Zhiyu, WANG Yichao, LIN Xinhua
doaj   +1 more source