Results 81 to 90 of about 1,175,340 (231)

Prediction of Time Domain Vibro-Acoustic Response of Conical Shells Using Jacobi–Ritz Boundary Element Method

open access: yesAcoustics
Considering the lack of studies on the transient vibro-acoustic properties of conical shell structures, a Jacobi–Ritz boundary element method for forced vibro-acoustic behaviors of structure is proposed based on the Newmark-β integral method and the ...
Cong Gao   +5 more
doaj   +1 more source

Design of fractional order proportional integral controller using stability and robustness criteria in time delay system

open access: yesMeasurement + Control, 2019
In this paper, a tuning procedure of the parameters of fractional order proportional integral controller is presented for time delay system with arbitrary order.
SiYi Chen, HuiXian Huang
doaj   +1 more source

Torsion (Torsion Free) Fuzzy Modules Over Fuzzy Integral Domain

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2017
The   study   of  torsion  {torsion   free)  fuzzy  modules   over   fuzzy integtal  domain  as a generalization oftorsion (torsion free) modules.
I. M. A. Hadi, M. A. Hamil
doaj  

A stabilized time-domain combined field integral equation using the quasi-Helmholtz projectors [PDF]

open access: green, 2023
Van Chien Le   +3 more
openalex   +1 more source

On one time-optimal control problem for a parabolic equation with involution in a bounded domain

open access: yesAIMS Mathematics
In this paper, we study the problem of time-optimal control for the parabolic equation with involution in a multidimensional parallelepiped domain. A generalized solution to the initial boundary value problem is found, and the control problem is reduced ...
Farrukh Dekhkonov, Batirkhan Turmetov
doaj   +1 more source

THE REPRESENTATION OF THE GENERALIZED DIFFERENTIAL OPERATOR IN SOME CLASS OF THE STAR SHAPED DOMAIN

open access: yesAdvanced Engineering Research, 2021
The author have got an integral representation of the Gel’fond – Leont’ev generalized differential and integral operators in the space of analytic functions in the star shaped with respect to the zero domain.
A.V. MORZHAKOV
doaj  

A Cauchy integral method to solve the 2D Dirichlet and Neumann problems for irregular simply-connected domains

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2018
A method for construction of solutions to the continuous approximate 2D Dirichlet and Neumann problems in the arbitrary simply-connected domain with a smooth boundary has been discussed.
A. El-Shenawy, E.A. Shirokova
doaj  

Using Chebyshev’s polynomials for solving Fredholm integral equations of the second kind

open access: yesMathematical Modelling and Analysis
The main problem with the Newton method is the computation of the inverse of the first derivative of the operator involved at each iteration step. Thus, when we want to apply the Newton method directly to solve an integral equation, the existence of the
José Antonio Ezquerro   +1 more
doaj   +1 more source

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