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Wyszukujesz frazę "Kirchhoff problem" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
Existence of positive radial solutions to a p-Laplacian Kirchhoff type problem on the exterior of a ball
Autorzy:
Graef, John R.
Hebboul, Doudja
Moussaoui, Toufik
Powiązania:
https://bibliotekanauki.pl/articles/29519226.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Kirchhoff problem
p-Laplacian
positive radial solution
variational methods
Opis:
In this paper the authors study the existence of positive radial solutions to the Kirchhoff type problem involving the p-Laplacian $ -(a+b \sum_{\Omega_e} | \nabla u |^p dx) \Delta_p u = \lambda f (|x|, u), x ∈ \Omega_e, u=0 $ on $ \delta \Omega_e $, where λ > 0 is a parameter, $ Ω_e = {x ∈ \mathbb{R}^N : |x| > r_0}, r_0 > 0, N > p > 1, Δp $ is the p-Laplacian operator, and $ f ∈ C([r_0,+∞) × [0,+∞) , \mathbb{R} ) $ is a non-decreasing function with respect to its second variable. By using the Mountain Pass Theorem, they prove the existence of positive radial solutions for small values of λ.
Źródło:
Opuscula Mathematica; 2023, 43, 1; 47-66
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Global solutions for a nonlinear Kirchhoff type equation with viscosity
Autorzy:
Lapa, Eugenio Cabanillas
Powiązania:
https://bibliotekanauki.pl/articles/29519609.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
global solutions
nonlinear Kirchhoff type problem
exponential decay
Opis:
In this paper we consider the existence and asymptotic behavior of solutions of the following nonlinear Kirchhoff type problem $ u_{t t} - M ( \int_\Omega | \nabla u |^2 dx ) \Delta u - \delta \Delta u_t = \mu | u |^{p-2} u $ in $ \Omega \times ]0, \infty [ $ where $ M(s) = $ ⎧ $ a - bs $ for $ s \in [0, a/b [$, ⎨ ⎩ $ 0, $ for $ s \in [ a/b, + \infty ] $. If the initial energy is appropriately small, we derive the global existence theorem and its exponential decay.
Źródło:
Opuscula Mathematica; 2023, 43, 5; 689-701
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tiling by squares, Kirchhoff’s laws and a flow problem in the economy
Autorzy:
Maciuk, Arkadiusz
Smoluk, Antoni
Powiązania:
https://bibliotekanauki.pl/articles/421315.pdf
Data publikacji:
2017
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
squarings
digraph
Kirchhoff’s laws
flow problem in the economy
Opis:
The problem of tiling by squares was formulated more than one hundred years ago and has been mostly regarded as an interesting mathematical issue in geometry, yet without any special practical associations. In addition to a historical outline of the problem, this paper demonstrates how Smith’s 1940 method using digraphs helps associate an issue linked to two-dimensional dissection or packaging with such economic problems as transportation network planning, researching linkages between suppliers and the like. We also discuss simple perfect squared rectangles whose relevant laws of nature are as yet unknown, according to the principle that elegant scientific structures sooner or later find their equivalents in the real world.
Źródło:
Didactics of Mathematics; 2017, 14(18); 33-44
1733-7941
Pojawia się w:
Didactics of Mathematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lossless transmission lines terminated by crystal oscillator circuit
Autorzy:
Angelov, Vasil G.
Powiązania:
https://bibliotekanauki.pl/articles/1065397.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Fixed point theorem
Kirchhoff’s law
Lossless transmission line
Mixed problem for hyperbolic system
Neutral equation
Periodic solution
Opis:
The present paper deals with ТЕМ propagation of waves along lossless transmission lines terminated by a crystal oscillator circuit. The crystal oscillator circuit generates nonlinear boundary conditions derived by the Kirchhoff’s law. Then the mixed problem for the hyperbolic transmission line system to an initial value problem for neutral system on the boundary is reduced. The main purpose of the present paper is to show an existence-uniqueness of a periodic solution of the neutral system. This is achieved by introducing a suitable operator acting on a space of periodic functions. Its fixed point is a periodic solution of the neutral system. The advantages of the presented method on numerical example are demonstrated. The solution can be obtained by successive approximations.
Źródło:
World Scientific News; 2019, 132; 65-83
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Topology optimization for elastic base under rectangular plate subjected to moving load
Autorzy:
Jilavyan, S. H.
Khurshudyan, A. Zh.
Powiązania:
https://bibliotekanauki.pl/articles/230086.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
distributed system
moving load
Kirchhoff plate
Winkler base
topology optimization
problem of moments
L∞-optimal control
distributions
Bubnov–Galerkin procedure
Opis:
Distribution optimization of elastic material under elastic isotropic rectangular thin plate subjected to concentrated moving load is investigated in the present paper. The aim of optimization is to damp its vibrations in finite (fixed) time. Accepting Kirchhoff hypothesis with respect to the plate and Winkler hypothesis with respect to the base, the mathematical model of the problem is constructed as two–dimensional bilinear equation, i.e. linear in state and control function. The maximal quantity of the base material is taken as optimality criterion to be minimized. The Fourier distributional transform and the Bubnov–Galerkin procedures are used to reduce the problem to integral equality type constraints. The explicit solution in terms of two–dimensional Heaviside‘s function is obtained, describing piecewise–continuous distribution of the material. The determination of the switching points is reduced to a problem of nonlinear programming. Data from numerical analysis are presented.
Źródło:
Archives of Control Sciences; 2015, 25, 3; 289-305
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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