Results 71 to 80 of about 6,303,122 (262)
Generalizations of the Dirichlet Problem for Bianalytic Functions
Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT We prove the Dirichlet problem for second‐order iterated Vekua equations, a natural generalization of the Bitsadze equation, is well‐posed when the boundary condition is defined as a product of an exponential function and a polynomial on a non‐degenerate conic that is not a circumference.
William L. Blair
wiley +1 more source
Direct method for a Cauchy problem with application to a Tokamak
Theoretical and Applied Mechanics Letters, 2019 This note is concerned with a new direct (non-iterative) method for the solution of an elliptic inverse problem. This method is based on the application of the Green’s second identity which leads to a moment problem for the unknown boundary condition ...
Mohsen Tadi
doaj +1 more source
Weakly Convex Ridge Regularization for 3D Non‐Cartesian MRI Reconstruction
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose While highly accelerated non‐Cartesian acquisition protocols significantly reduce scan time, they often entail long reconstruction delays for 3D data. Deep learning–based reconstruction methods can alleviate this, but typically rely on complex, highly parametrized architectures.
German Shâma Wache +3 more
wiley +1 more source
Inverse Coefficient Problems for Nonlinear Elliptic Equations
, 2008 This paper is devoted to a class of inverse coefficient problems for nonlinear elliptic equations. The unknown coefficient of elliptic equations depends on the gradient of the solution and belongs to a set of admissible coefficients. It is shown that the
yang, runsheng
core +1 more source
Efficient MCMC and posterior consistency for Bayesian inverse problems [PDF]
Many mathematical models used in science and technology often contain parameters that are not known a priori. In order to match a model to a physical phenomenon, the parameters have to be adapted on the basis of the available data.
Vollmer, Sebastian
core
Elliptic curves and the congruent number problem [PDF]
, 2023 openIn this thesis we will introduce some basic notions on the arithmetic theory of elliptic curves and show how this theory is connected to the congruent number problem, a classical problem in arithmetic.
BARBAN, FRANCESCO
core
Deep‐Reorder: Refined Motion Correction for 3D Brain MRI via Iterative Data Regrouping
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose Accurate and temporally high‐resolution estimation of subject motion is paramount for effective motion‐correction in MRI. This work proposes a novel approach for estimating subject motion within a 3D MRI scan with high temporal resolution.
Laurens Beljaards +7 more
wiley +1 more source
Numerical solution of the inverse Cauchy problem for the elliptic equation
Sibirskie Elektronnye Matematicheskie Izvestiya, 2017 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Prokopev, G. A. +3 more
openaire +1 more source
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT Accurate modeling of vibrating machines equipped with Neidhart springs is challenging due to the strong nonlinearities introduced by the elastomer–metal torsional elements and the constraints imposed by their kinematic arrangement. Multibody modeling methodologies for such vibrating machines are often computationally demanding, thus limiting ...
Davide Galli +3 more
wiley +1 more source
International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.ABSTRACT Swelling of clay‐sulfate rocks is a concern in geotechnical engineering that can damage infrastructure. In the historic town of Staufen in southwest Germany, geothermal drilling into a swellable anhydrite‐bearing clay formation resulted in water inflow and subsequent swelling, triggering ground heave and damage to more than 250 houses.
Reza Mahmoudi Kouhi +4 more
wiley +1 more source