Results 21 to 30 of about 1,601 (125)

A novel recursive sub-tensor hyperspectral compressive sensing of plant leaves based on multiple arbitrary-shape regions of interest [PDF]

open access: yesPeerJ Computer Science
Plant hyperspectral images (HSIs) contain valuable information for agricultural disaster prediction, biomass estimation, and other applications. However, they also include a lot of irrelevant background information, which wastes storage resources.
Zhuo Li   +5 more
doaj   +2 more sources

THE INVERSE PROBLEM OF RECOVERING ELECTROMAGNETIC AND GEOMETRIC PROPERTIES OF A MULTISECTIONAL ANISOTROPIC DIAPHRAGM IN A RECTANGULAR WAVEGUIDE

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2020
Background. This paper is devoted to inverse problem of recovering electromagnetic and geometric properties of a multisectional anisotropic diaphragm in a rectangular waveguide.
E. D. Derevyanchuk   +4 more
doaj   +1 more source

ESTIMATION OF THE ELECTRODYNAMICAL FORCES NEAR FERROMAGNETIC COMPONENTS LOCATED INSIDE LOW VOLTAGE SWITCHING DEVICES [PDF]

open access: yesAnnals: Series on engineering sciences (Academy of Romanian Scientists), 2018
Inside power apparatus, electric conductors are often placed nearby ferromagnetic walls or inside ferromagnetic slots. It is important to know exactly the forces which appear in those situations, in order to ensure an adequate design of all machines ...
Flaviu Mihai FRIGURA-ILIASA   +3 more
doaj  

Some remarks on the applicability of rectangular elements to plane strain boundary value problems

open access: yesComputer Assisted Methods in Engineering and Science, 2023
The aim of this paper is the discussion on the applicability of some rectangular elements to plane strain boundary value problems. Four different elements were considered: 4-node, 5-node, Serendipity 8-node and Lagrangian 9-node. Two cases: the material
Andrzej Jarzębowski, Jan Maciejewski
doaj  

Relations between pressurized triaxial cavities and moment tensor distributions

open access: yesAnnals of Geophysics, 2015
Pressurized cavities are commonly used to compute ground deformation in volcanic areas: the set of available solutions is limited and in some cases the moment tensors inferred from inversion of geodetic data cannot be associated with any of the available
Claudio Ferrari   +2 more
doaj   +1 more source

Rectangular array of electromagnetic vector sensors: tensor modelling/decomposition and DOA‐polarisation estimation [PDF]

open access: yesIET Signal Processing, 2019
In this study, the authors propose a fast quadrilinear decomposition algorithm for estimation of the directions‐of‐arrival and polarisations of the incident sources via a uniform rectangular array of electromagnetic vector sensors (EMVSs). Conventional quadrilinear alternating least squares (QALS), involves computationally intensive Khatri‐Rao products
Tanveer Ahmed   +3 more
openaire   +1 more source

Improved Rectangular Matrix Multiplication using Powers of the Coppersmith-Winograd Tensor [PDF]

open access: yes, 2018
In the past few years, successive improvements of the asymptotic complexity of square matrix multiplication have been obtained by developing novel methods to analyze the powers of the Coppersmith-Winograd tensor, a basic construction introduced thirty years ago. In this paper we show how to generalize this approach to make progress on the complexity of
Gall, François Le, Urrutia, Florent
openaire   +2 more sources

Rectangular M-tensors and strong rectangular M-tensors [PDF]

open access: yesScienceAsia, 2021
Jun He, Yanmin Liu, Guangjun Xu
openaire   +1 more source

DISCRETE DEFORMATION WAVE DYNAMICS IN SHEAR ZONES: PHYSICAL MODELLING RESULTS

open access: yesГеодинамика и тектонофизика, 2016
Observations of earthquake migration along active fault zones [Richter, 1958; Mogi, 1968] and related theoretical concepts [Elsasser, 1969] have laid the foundation for studying the problem of slow deformation waves in the lithosphere.
S. A. Bornyakov   +2 more
doaj   +1 more source

Perron-Frobenius Theorem for Rectangular Tensors and Directed Hypergraphs

open access: yes, 2018
For any positive integers $r$, $s$, $m$, $n$, an $(r,s)$-order $(n,m)$-dimensional rectangular tensor ${\cal A}=(a_{i_1\cdots i_r}^{j_1\cdots j_s}) \in ({\mathbb R}^n)^r\times ({\mathbb R}^m)^s$ is called partially symmetric if it is invariant under any permutation on the lower $r$ indexes and any permutation on the upper $s$ indexes.
Lu, Linyuan   +2 more
openaire   +2 more sources

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