Results 1 to 10 of about 502,823 (116)

Analytic vs. numerical solutions to a Sturm-Liouville transmission eigenproblem

open access: yesJournal of Numerical Analysis and Approximation Theory, 2019
An elliptic one-dimensional second order boundary value problem involving discontinuous coefficients, with or without transmission conditions, is considered.
Calin-Ioan Gheorghiu, Bertin Zinsou
doaj   +7 more sources

Can a Finite Degenerate ‘String’ Hear Itself The Exact Solution to a Simplified IBVP

open access: yesJournal of Optimization, Differential Equations and Their Applications, 2022
The separation of variables based solution to a simplified (compared to that published earlier in JODEA, 28 (1) (2020), 1 – 42) initial boundary value problem for a 1D linear degenerate wave equation, posed in a space-time rectangle, has been presented ...
Vladimir L. Borsch, Peter I. Kogut
doaj   +1 more source

Local Well-Posedness for Free Boundary Problem of Viscous Incompressible Magnetohydrodynamics

open access: yesMathematics, 2021
In this paper, we consider the motion of incompressible magnetohydrodynamics (MHD) with resistivity in a domain bounded by a free surface. An electromagnetic field generated by some currents in an external domain keeps an MHD flow in a bounded domain. On
Kenta Oishi, Yoshihiro Shibata
doaj   +1 more source

A Class of Singular Sturm–Liouville Problems with Discontinuity and an Eigenparameter-Dependent Boundary Condition

open access: yesMathematics, 2022
In this paper, we study a singular Sturm–Liouville problem with an eigenparameter-dependent boundary condition and transmission conditions at two interior points.
Jinming Cai, Zhaowen Zheng, Kun Li
doaj   +1 more source

A method of data transmission technology for line condition monitoring in smart transmission grid [PDF]

open access: yesE3S Web of Conferences, 2021
In order to make the operation of the line more safe and reliable, the state monitoring is needed and the remote transmission of data is realized on this basis. This paper proposes a variety of communication modes suitable for transmission line condition
Li Congcong   +5 more
doaj   +1 more source

Can a Finite Degenerate ‘String’ Hear Itself? Numerical Solutions to a Simplified IBVP

open access: yesJournal of Optimization, Differential Equations and Their Applications, 2023
Some discrete models for a simplified (compared to that published earlier in JODEA, 28 (1) (2020), 1 – 42) initial boundary value problem for a 1D linear degenerate wave equation, posed in a space-time rectangle and solved earlier exactly (JODEA, 30 (1) (
Vladimir L. Borsch, Peter I. Kogut
doaj   +1 more source

Active Vibration-Based Condition Monitoring of a Transmission Line

open access: yesActuators, 2021
In the power system, the transmission tower is located in a variety of terrains. Sometimes there will be displacement, inclination, settlement and other phenomena, which eventually lead to the collapse of the tower. In this paper, a method for monitoring
Liuhuo Wang   +5 more
doaj   +1 more source

Experimental and Numerical Study of an Electrical Thermal Storage Device for Space Heating

open access: yesEnergies, 2018
An electrical thermal storage (ETS) device for space heating is designed in this study. The proposed device is charged by the off-peak electricity and releases its thermal energy to warm the space all day long.
Guizhi Xu   +5 more
doaj   +1 more source

SCADA Data-Based Working Condition Classification for Condition Assessment of Wind Turbine Main Transmission System

open access: yesEnergies, 2021
Due to the complex and variable conditions under which wind turbines operate, existing working condition classification methods are inadequate for condition assessment of the main transmission system.
Huanguo Chen   +4 more
doaj   +1 more source

CONTROL OF TECHNICAL CONDITION OF THE AUTOMATIC TRANSMISSION [PDF]

open access: yesVolga Region Farmland, 2019
The aim of the study was to develop an automatic gearbox troubleshooting algorithm based on performance tests, as existing algorithms do not allow to determine a problem in a car at the lowest cost.
A.S. Ivanov   +5 more
doaj   +1 more source

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