Results 1 to 10 of about 1,611 (69)

An Exact Method for Calculating the Eigenvector Sensitivities

open access: yesApplied Sciences (Switzerland), 2020
Eigenvector sensitivities are often used in many engineering problems such as structural vibration control, optimization design, model updating and damage identification. So far, modal superposition method and Nelson’s method are the two main methods for
Xi Peng
exaly   +3 more sources

A comparison of common factor-based methods for hyperspectral image exploration: principal components analysis, maximum autocorrelation factors (MAF), minimum noise factors (MNF) and maximum difference factors (MDF)

open access: yesJournal of Spectral Imaging, 2022
Principal components analysis (PCA), maximum autocorrelation factors (MAF), minimum noise factors (MNF) and maximum difference factors (MDF) models are common factor-based models used for analysis of hyperspectral images.
Neal B. Gallagher
doaj   +1 more source

Mathematical modeling of the eigenvibrations for the loaded shallow shell [PDF]

open access: yesE3S Web of Conferences, 2023
The eigenvalue problems modeling of the eigenvibrations of the loaded shallow shell are studied. The asymptotic properties of the eigenvalues and eigenvectors are investigated in dependence on the load parameters.
Samsonov Anton, Solov’ev Sergey
doaj   +1 more source

An Analysis Method of Symplectic Dual System for Decagonal Quasicrystal Plane Elasticity and Application

open access: yesCrystals, 2022
The symplectic solution system of decagonal quasicrystal elastic mechanics is considered. Hamiltonian dual equations together with the boundary conditions are investigated by utilizing the principle of minimum potential energy.
Guangfang Li, Lianhe Li
doaj   +1 more source

Transient Stability Analysis of a Transmission Network Using Eigenvalue Principles with Automated VAR Compensation: A Case Study of the Nigerian Eastern Grid

open access: yesEnergies, 2021
Power systems may encounter disturbances during operation as a result of switching of various components, etc. Such perturbations include transformer tap-changing action, load variations, and line outages due to various types of faults of which an earth ...
Ewaoche John Okampo   +2 more
doaj   +1 more source

Flexible gypsum mould applied in the mechanical system for blank of grouted ceramic handicrafts based on the radial movement of the sphere and connection by the principle of six-point positioning

open access: yesThe Journal of Engineering, 2020
In order to solve the problems of low production efficiency, poor quality of blanks, high labour intensity and inability to meet the market demand with the manual gypsum mould, a novel design of the gypsum mould to be applied into the automatic ...
Gu Lizhi   +7 more
doaj   +1 more source

New Results of Multi-Agent Controllability Under Equitable Partitions

open access: yesIEEE Access, 2020
This paper studies the controllability of leader-follower multi-agent systems under fixed topology. The relationship between controllability and information communication topologies is characterized by taking advantage of equitable partitions.
Yanhong Lou, Zhijian Ji, Jijun Qu
doaj   +1 more source

Fixed point index computations for multivalued mapping and application to the problem of positive eigenvalues in ordered space

open access: yesApplied General Topology, 2022
In this paper, we present some results on fixed point index calculations for multivalued mappings and apply them to prove the existence of solutions to multivalued equations in ordered space, under flexible conditions for the positive eigenvalue.
Vo Viet Tri
doaj   +1 more source

A Note on Eigenvalues and Asymmetric Graphs

open access: yesAxioms, 2023
This note is intended as a contribution to the study of quantitative measures of graph complexity that use entropy measures based on symmetry. Determining orbit sizes of graph automorphism groups is a key part of such studies. Here we focus on an extreme
Abdullah Lotfi   +2 more
doaj   +1 more source

Novel Hybrid Modified Modal Analysis and Continuation Power Flow Method for Unity Power Factor DER Placement

open access: yesEnergies, 2023
Distributed energy resource (DER) has become an effective attempt in promoting use of renewable energy resources for electricity generation. The core intention of this study is to expand an approach for optimally placing several DER units to attain the ...
Ardiaty Arief, Muhammad Bachtiar Nappu
doaj   +1 more source

Home - About - Disclaimer - Privacy