Results 31 to 40 of about 281,878 (266)
Физика волновых процессов и радиотехнические системы, 2019 On the basis of the idea of splitting the process into physical factors, using the Fourier method and the green function apparatus, an algorithm for constructing a new class of solutions to the initial boundary value problems of the theory of drying by ...
A.M. Afanasiev +2 more
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Rayleigh angle incident ultrasonic beam shape design influence on reflected beam
Acta Acustica, 2023 Current evolutions in transducer design, such as phased arrays, but more importantly, metamaterials-based acoustic lenses, potentially enable generating specific beam shapes earlier unconsidered.
Declercq Nico F.
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Karpatsʹkì Matematičnì Publìkacìï, 2020 In this paper we continue to investigate the properties of the problem with nonlocal conditions, which are multipoint perturbations of mixed boundary conditions, started in the first part.
Ya.O. Baranetskij +3 more
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Mathematical Modelling and Analysis, 2021 We consider the Mullins’ equation of a single surface grooving when the surface diffusion is not considered as very slow. This problem can be formed by a surface grooving of profiles in a finite space region.
Mansur I. Ismailov
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Математичні Студії, 2020 The spectral properties of the nonself-adjoint problem with multipoint perturbations of the Dirichlet conditions for differential operator of order $2n$ with involution are investigated. The system of eigenfunctions of a multipoint problem is constructed.
Ya.O. Baranetskij +3 more
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Fourier method in the space of φB - distributions
Учёные записки Казанского университета: Серия Физико-математические науки, 2023 In our previous articles, we introduced and explored the notion of φB -distributions with values in the Banach space. This offers a new perspective on the theory of solvability of linear problems, which is important for solving partial differential ...
V. S. Mokeichev, A. M. Sidorov
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Boundary problem for the singular heat equation
Karpatsʹkì Matematičnì Publìkacìï, 2017 The scheme for solving of a mixed problem with general boundary conditions is proposed for a heat equation \[a(x)\frac{\partial T}{\partial \tau}= \frac{\partial}{\partial x} \left(\lambda(x)\frac{\partial T}{\partial x}\right)\] with coefficient $a(x ...
O.V. Makhnei
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Cumhuriyet Science Journal, 2019 An inverse boundary value problem for asecond-order elliptic equation with periodic and integral condition isinvestigated. The definition of a classical solution of the problem isintroduced.
N.a. Heydarzade +2 more
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Fourier Ptychographic Reconstruction Method of Self-Training Physical Model
Applied Sciences, 2023 Fourier ptychographic microscopy is a new microscopic computational imaging technology. A series of low-resolution intensity images are collected by a Fourier ptychographic microscopy system, and high-resolution intensity and phase images are ...
Xiaoli Wang +6 more
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Fourier Spectral Methods for Nonlocal Models [PDF]
Journal of Peridynamics and Nonlocal Modeling, 2020 Efficient and accurate spectral solvers for nonlocal models in any spatial dimension are presented. The approach we pursue is based on the Fourier multipliers of nonlocal Laplace operators introduced in a previous work. It is demonstrated that the Fourier multipliers, and the eigenvalues in particular, can be computed accurately and efficiently.
Bacim Alali, Nathan Albin
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