Results 171 to 180 of about 2,720 (211)

General High-Order Selective Harmonic Repetitive Control for PWM Converters

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2021
In this article, a general high-order selective harmonic repetitive control (HO-SHRC) scheme is proposed, which is composed of a standard high-order repetitive controller structure and a new order-expandable SHRC.
Wenzhou Lu, W. Wang, Keliang Zhou, Qigao Fan   +3 more
semanticscholar   +1 more source

Comparing Metrics at Large: Harmonic vs Quo-Harmonic Coordinates

, 2001
To compare two space-times on large domains, and in particular the global structure of their manifolds, requires using identical frames of reference and associated coordinate conditions.
J. M. Aguirregabiria, L. Bel, J. Mart́ın, A. Molina, E. Ruiz   +4 more
semanticscholar   +1 more source

Three‐dimensional fundamental solution for unsaturated transversely isotropic half‐space under surface time‐harmonic load

International journal for numerical and analytical methods in geomechanics (Print), 2023
An analytical solution of unsaturated poroelastic transversely isotropic (TI) half‐space under surface time‐harmonic load with consideration of compressibility, viscous and inertial coupling of soil skeleton, pore‐water and pore‐air, as well as the ...
Wenjie Ma, Binglong Wang, Shunhua Zhou, E. Leong, Xiao-gang Wang, Changdan Wang   +5 more
semanticscholar   +1 more source

Choice-Free Dualities for Lattice Expansions: Application to Logics with a Negation Operator

Studia Logica: An International Journal for Symbolic Logic, 2023
Constructive dualities have recently been proposed for some lattice-based algebras and a related project has been outlined by Holliday and Bezhanishvili, aiming at obtaining “choice-free spatial dualities for other classes of algebras […\documentclass ...
Chrysafis Hartonas
semanticscholar   +1 more source

Restoration of the orientation distribution function for materials with low lattice and sample symmetry using the harmonic method

Industrial laboratory Diagnostics of materials, 2023
A lot of the properties polycrystalline materials depend on their crystallographic texture. The most complete information about the texture can be obtained from the orientation distribution function (ODF).
A. Kolyanova
semanticscholar   +1 more source

The local limit of the quasilocal mass and mean quasilocal pressure on rigid spheres and rigid quasilocal frames in a general space-time

Physica Scripta
In this paper, general expressions are developed for the Brown-York mass and corresponding mean quasilocal pressure of spatial sections with the topology of 2-spheres in a 4-dimensional space-time, in the limit that the radius of the 2-spheres is small ...
Yuan Khang Foo, Malcolm Anderson
semanticscholar   +1 more source

Interbasis expansions for the isotropic 3D harmonic oscillator and bivariate Krawtchouk polynomials

, 2013
An explicit expression for the general bivariate Krawtchouk polynomials is obtained in terms of the standard Krawtchouk and dual Hahn polynomials. The bivariate Krawtchouk polynomials occur as matrix elements of the unitary reducible representations of ...
Vincent X. Genest, L. Vinet, A. Zhedanov
semanticscholar   +1 more source

Transformation equation for frames undergoing non-uniform acceleration such as SHM and rotational motion

The European Physical Journal Plus
Lorentz transformation equations provide us a set of relations between the spacetime coordinates as observed from two different inertial frames.
Ranchhaigiri Brahma, A. K. Sen
semanticscholar   +1 more source

Learning single-index models via harmonic decomposition

arXiv.org
We study the problem of learning single-index models, where the label $y \in \mathbb{R}$ depends on the input $\boldsymbol{x} \in \mathbb{R}^d$ only through an unknown one-dimensional projection $\langle \boldsymbol{w}_*,\boldsymbol{x}\rangle$.
Nirmit Joshi, Hugo Koubbi, Theodor Misiakiewicz, Nathan Srebro   +3 more
semanticscholar   +1 more source

Spherical Harmonic Expansions for the Gravitational Field of a Polyhedral Body with Polynomial Density Contrast

Surveys in geophysics, 2019
Cheng Chen, Yong Ouyang, S. Bian
semanticscholar   +1 more source