Results 31 to 40 of about 4,588,425 (332)

A Novel Image Compression-Encryption Scheme Based on Chaos and Compression Sensing

open access: yesIEEE Access, 2018
In this paper, a novel image compression–encryption hybrid algorithm is proposed. First, a Gauss random matrix and a random scrambling matrix are generated by using Chebyshev mapping and Logistic mapping, respectively. Then, based on the principle
Shuqin Zhu, Congxu Zhu, Wenhong Wang
doaj   +1 more source

One-Dimensional MUSIC-Type Algorithm for Spherical Microphone Arrays

open access: yesIEEE Access, 2020
Spherical microphone arrays have been widely used in direction-of-arrival (DOA) estimation in recent years. The conventional multiple signal classification method formulated in spherical harmonic domain (SHMUSIC) is computationally expensive ...
Qinghua Huang, Tingwei Chen
doaj   +1 more source

Approximating Solutions of Matrix Equations via Fixed Point Techniques

open access: yesMathematics, 2021
The principal goal of this work is to investigate new sufficient conditions for the existence and convergence of positive definite solutions to certain classes of matrix equations.
Rahul Shukla   +3 more
doaj   +1 more source

Deviations of the Lepton Mapping Matrix from the Harrison-Perkins-Scott Form

open access: yes, 2010
We propose a simple set of hypotheses governing the deviations of the leptonic mapping matrix from the Harrison-Perkins-Scott (HPS) form. These deviations are supposed to arise entirely from a perturbation of the mass matrix in the charged lepton sector.
Friedberg, R., Lee, T. D.
core   +1 more source

Models of q-algebra representations: Matrix elements of the q-oscillator algebra [PDF]

open access: yes, 1993
This article continues a study of function space models of irreducible representations of q analogs of Lie enveloping algebras, motivated by recurrence relations satisfied by q-hypergeometric functions.
E. G. Kalnins   +5 more
core   +2 more sources

Analysis of Causal Relationships between Green Productivity Indicators with Fuzzy Cognitive Mapping Approach [PDF]

open access: yesچشم‌انداز مدیریت صنعتی, 2019
Green productivity is a sustainable development approach. The purpose of this study is to identify green productivity Indicatorsand to determine the relationships between Indicatorsto present the model through fuzzy cognitive mapping. The fuzzy cognitive
Mehdi Nikshapoori   +2 more
doaj  

Genotype Matrix Mapping: Searching for Quantitative Trait Loci Interactions in Genetic Variation in Complex Traits

open access: yesDNA Research, 2007
In order to reveal quantitative trait loci (QTL) interactions and the relationship between various interactions in complex traits, we have developed a new QTL mapping approach, named genotype matrix mapping (GMM), which searches for QTL interactions in ...
S. Isobe, A. Nakaya, S. Tabata
semanticscholar   +1 more source

Vertical Accuracy Simulation of Stereo Mapping Using a Small Matrix Charge-Coupled Device

open access: yesRemote Sensing, 2017
At present, without ground control points (GCPs), the positioning accuracy of remote sensing images often fails to meet the growing requirements for mapping accuracy. Multi-load synergy to improve accuracy without GCPs by eliminating the impact of stereo
Zhichao Guan, Yonghua Jiang, Guo Zhang
doaj   +1 more source

Matrix factorizations and pentagon maps

open access: yesProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2023
We propose a specific class of matrices that participate in factorization problems that turn out to be equivalent to constant and entwining (non-constant) pentagon, reverse-pentagon or Yang–Baxter maps, expressed in non-commutative variables. In detail, we show that factorizations of order N
openaire   +2 more sources

Topology optimization of three-translational degree-of-freedom spatial compliant mechanism

open access: yesAdvances in Mechanical Engineering, 2019
Considering that the Jacobian matrix maps the velocity of the joint space of the robot to the end velocity of the Cartesian space, a novel topology optimization approach is proposed in this article for the design of three-translational degree-of-freedom ...
Dachang Zhu, Yanping Feng, Wanghu Zhan
doaj   +1 more source

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