Results 271 to 280 of about 1,698,662 (287)

Density Matrix Description of Coupled Spin Systems in the Presence of Two Strong Oscillatory Fields

The Journal of Chemical Physics, 1964
A density matrix description of coupled spin systems in the presence of two strong rf fields is given following a relaxation matrix formalism. The irradiating rf field, H2, has significant effects on the population distribution in a spin system even though the frequency of H2 is not close to a resonance frequency of the system.
Michael Barfield, John D. Baldeschwieler
openaire   +1 more source

Theory and implementation of ℋ-matrix based iterative and direct solvers for Helmholtz and elastodynamic oscillatory kernels.

J. Comput. Phys., 2017
In this work, we study the accuracy and efficiency of hierarchical matrix (H-matrix) based fast methods for solving dense linear systems arising from the discretization of the 3D elastodynamic Green's tensors. It is well known in the literature that standard H-matrix based methods, although very efficient tools for asymptotically smooth kernels, are ...
Stéphanie Chaillat, Luca Desiderio, Patrick Ciarlet   +2 more
openaire   +2 more sources

A method for the rapid calculation of matrix elements with highly oscillatory JWKB radial wavefunctions

Chemical Physics Letters, 1974
Abstract A method for the rapid computation of matrix elements with JWKB radial wavefunctions is discussed. The method consists of dividing the range of integration into segments determined by the nodes of the semiclassical wavefunction. The desired matrix elements are calculated by summing the contributions from each segment which are evaluated by ...
openaire   +1 more source

Theory and implementation of H-matrix based iterative and direct solvers for oscillatory kernels

2017
In this work, we study the accuracy and efficiency of hierarchical matrix (H-matrix) based fast methods for solving dense linear systems arising from the discretization of the 3D elastodynamic Green's tensors. It is well known in the literature that standard H-matrix based methods, although very efficient tools for asymptotically smooth kernels, are ...
Stephanie Chaillat, Luca Desiderio, Patrick Ciarlet   +2 more
openaire   +2 more sources

Recursive feedback between matrix dissipation and chemo-mechanical signaling drives oscillatory growth of cancer cell invadopodia

Cell Reports, 2021
Julie Chang, Vivek Shenoy, Christopher Price   +2 more
exaly  

Oscillatory Group-Bipartite Consensus in a Swarm of Robots With Multiple Oscillatory Leaders

IEEE Transactions on Control of Network Systems, 2023
Shaorong Xie, Hengyu Li
exaly  

Bray–Liebhafsky oscillatory reaction as the matrix system for the kinetic determination of microquantities of alizarin and purpurin

Reaction Kinetics, Mechanisms and Catalysis, 2020
Ljiljana Kolar-Aniċ, Nedeljko Manojlovic, Zeljko Cupic   +2 more
exaly  

A method of approximate calculation of eigenvalues and eigenvectors of an oscillatory matrix

2002
openaire   +1 more source

Bidiagonalization of oscillatory matrices∗

Linear and Multilinear Algebra, 1997
Juan Manuel Pena, Jesus Miguel Carnicer
exaly  

Oscillatory shear stress and hydrostatic pressure modulate cell-matrix attachment proteins in cultured endothelial cells

In Vitro Cellular and Developmental Biology - Animal, 1995
Olivier Thoumine, Robert M Nerem
exaly