Results 81 to 90 of about 6,004,549 (201)
On the reconstruction of a boundary value problem from incomplete nodal data
, 2023 . In this paper, the reconstruction of a differential operator from incomplete spectral characteristics is concerned. We prove that coefficients of a second-order differential equation with the eigen-parameter appearing at the right-end boundary ...
Shieh, Chung-tsun
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Algorithm of Cardiomagnetic Signal Evaluation: "Magnetocardiographic Lead"
Кібернетика та комп'ютерні технологіїIntroduction. The investigation of the electrical activity of the human heart by measuring electromagnetic signals is widely used in cardiodiagnostics. The use of magnetometric methods for diagnosing disorders of the heart is largely associated with the ...
Mykhailo Primin, Igor Nedayvoda
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Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.ABSTRACT The previously introduced X‐FFT solver permits solving three‐dimensional linear elastic homogenization problems with high accuracy and efficiency. Due to the extended finite element discretization (X‐FEM), matrix‐inclusion problems may be approximated with the error convergence of interface‐conforming finite elements.
Flavia Gehrig, Matti Schneider
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Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.ABSTRACT Stochastic Galerkin methods offer unexplored potential for the numerical simulation of parabolic problems with random variables, in particular if they are combined with variational discretizations of the space and time variables. Due to the high dimensionality, the solution of the arising algebraic systems do not become feasible without ...
Moataz Dawor +2 more
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The 0-1 inverse maximum stable set problem [PDF]
Given an instance of a weighted combinatorial optimization problem and its feasible solution, the usual inverse problem is to modify as little as possible (with respect to a fixed norm) the given weight system to make the giiven feasible solution optimal.
Yerim Chung, Marc Demange
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Uniqueness theorems for Sturm-Liouville operators with interior twin-dense nodal set
Electronic Journal of Differential Equations, 2017 We study Inverse problems for the Sturm-Liouville operator with Robin boundary conditions. We establish two uniqueness theorems from the twin-dense nodal subset $W_{S}([\frac{1-\varepsilon}{2},\frac{1}{2 ...
Yu Ping Wang
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Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.ABSTRACT Due to the widespread usage of specialized piezoelectric actuators in various applications, accurate simulations have become key components of modern design processes. Although simulation tools for piezoelectric devices are widely available, nonlinear effects, which occur when exciting near resonance at elevated amplitudes, are often neglected
Jonas Hölscher +2 more
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Inverse transmission eigenvalue problems with the twin-dense nodal subset
, 2017 The inverse nodal problem for the Sturm–Liouville operator L(q,a) arisen from acoustic scattering problems was considered. The authors showed that q(x) on the interval [0,1] can be uniquely determined by the interior twin-dense nodal subset W_T([0,1 ...
Wang, Yu Ping;Shieh, Chung Tsun;Miao, Hong Yi
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On the Lipschitz stability of inverse nodal problem for Dirac system
, 2021 Inverse nodal problem on Dirac operator is determination problem of the parameters in the boundary conditions, number m and potential function V by using a set of nodal points of a component of two component vector eigenfunctions as the given spectral ...
Kemaloğlu, Hikmet, Yılmaz, Emrah
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Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.ABSTRACT We present a numerical study of a weakly symmetric dual‐mixed finite element method for the Stokes source problem, in which the Cauchy stress is the primary unknown and its symmetry is imposed weakly through a vorticity Lagrange multiplier. Viewing the scheme as the incompressible limit of the reduced‐symmetry mixed elasticity framework, we ...
Fleurianne Bertrand, Tugay Dağlı
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