Results 21 to 30 of about 5,151 (167)
Positive Solutions of the Semipositone Neumann Boundary Value Problem
Mathematical Modelling and Analysis, 2015 In this paper we consider the Neumann boundary value problem at resonance −u''(t) = f t, u(t) , 0 < t < 1, u' (0) = u' (1) = 0. We assume that the nonlinear term satisfies the inequality f(t, z) + α2z + β(t) ≥ 0, t ∈ [0, 1], z ≥ 0, where β : [0, 1]
Johnny Henderson, Nickolai Kosmatov
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Convergence of the Allen--Cahn Equation with Neumann Boundary Conditions [PDF]
SIAM Journal on Mathematical Analysis, 2015 26 pages, 1 ...
Masashi Mizuno, Yoshihiro Tonegawa
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Identification hyperbolic problems with the Neumann boundary condition
Қарағанды университетінің хабаршысы. Математика сериясы, 2018 In the present study, an identification problem with the Neumann boundary condition for a one-dimensional hyperbolic equation is investigated. Stability estimates for the solution of the identification problem are established. Furthermore, a first order
A. Ashyralyev, F. Emharab
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Archives of Control Sciences, 2016 Various optimization problems for linear parabolic systems with multiple constant time delays are considered. In this paper, we consider an optimal distributed control problem for a linear parabolic system in which multiple constant time delays appear in
Kowalewski Adam
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Neumann boundary conditions from Born–Infeld dynamics [PDF]
Nuclear Physics B, 1999 Some typos, reference added.
Savvidy, Konstantin G. +1 more
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Approximation of tricomi problem with Neumann boundary condition
Numerische Mathematik, 1984 The Tricomi problem with Neumann boundary condition is reduced to a degenerate problem in the elliptic region with a non-local boundary condition and to a Cauchy problem in the hyperbolic region. A variational formulation is given to the elliptic problem and a finite element approximation is studied.
Vanninathan, M., Veerappa Gowda, G.D.
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A Fast Algorithm for Deblurring Models with Neumann Boundary Conditions [PDF]
SIAM Journal on Scientific Computing, 1999 The authors deal with the blur removal which is a fundamental issue in signal and image processing. They consider the use of the Neumann boundary conditions which are corresponding to a reflection of the original scene at the boundary. In this case the resulting matrices are (block) Toeplitz-plus-Hankel matrices. It is shown that for symmetric blurring
Ng, MKP, Chan, RH, Tang, WC
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Pointwise observation of the state given by complex time lag parabolic system
Archives of Control Sciences, 2017 Various optimization problems for linear parabolic systems with multiple constant time lags are considered. In this paper, we consider an optimal distributed control problem for a linear complex parabolic system in which different multiple constant time ...
Kowalewski Adam
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On a Waveguide with Frequently Alternating Boundary Conditions: Homogenized Neumann Condition [PDF]
Annales Henri Poincaré, 2010 We consider a waveguide modeled by the Laplacian in a straight planar strip. The Dirichlet boundary condition is taken on the upper boundary, while on the lower boundary we impose periodically alternating Dirichlet and Neumann condition assuming the period of alternation to be small. We study the case when the homogenization gives the Neumann condition
Borisov D, Bunoiu R, Cardone G.
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TWO-DIMENSIONAL HYBRIDS WITH MIXED BOUNDARY VALUE PROBLEMS
Acta Polytechnica, 2016 Boundary value problems are considered on a simplex F in the real Euclidean space R2. The recent discovery of new families of special functions, orthogonal on F, makes it possible to consider not only the Dirichlet or Neumann boundary value problems on F,
Marzena Szajewska +1 more
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