Results 81 to 90 of about 3,427 (187)

The Application of Piecewise Regularization Reconstruction to the Calibration of Strain Beams

open access: yesSensors
Standard beams are mainly used for the calibration of strain sensors using their load reconstruction models. However, as an ill-posed inverse problem, the solution to these models often fails to converge, especially when dealing with dynamic loads of ...
Jingjing Liu   +7 more
doaj   +1 more source

Wavelength and Polarization Multiplexed Nonlocal Metasurface for Quantitative Phase Microscopy

open access: yesNanophotonics, Volume 15, Issue 13, 13 July 2026.
A nonlocal metasurface with wavelength and polarization multiplexed optical transfer functions is demonstrated for performing quantitative phase imaging. The metasurface uses the angular dispersion of optical routing guided mode resonances to extract phase gradient information along different directions for phase retrieval. ABSTRACT Imaging transparent
Haiwei Wang   +8 more
wiley   +1 more source

Generalized Tikhonov regularization method for an inverse boundary value problem of the fractional elliptic equation

open access: yesBoundary Value Problems
This research studies the inverse boundary value problem for fractional elliptic equation of Tricomi–Gellerstedt–Keldysh type and obtains a condition stability result.
Xiao Zhang
doaj   +1 more source

A Modified Landweber Algorithm for Inversion of Particle Size Distribution Combined With Tikhonov Regularization Theory

open access: yesIEEE Access, 2018
Particle size distribution (PSD) measurement based on the static light scattering method has been widely used in the environmental field and combustion diagnostics, such as PM2.5 measurement and combustion process monitoring.
Ming Kong   +3 more
doaj   +1 more source

Reconstruction of a source term in a parabolic integro-differential equation from final data

open access: yesMathematical Modelling and Analysis, 2011
The identification of a source term in a parabolic integro-differential equation is considered. We study the existence of the quasi-solution to this problem, Tikhonov regularization and a related gradient method.
Kairi Kasemets, Jaan Janno
doaj   +1 more source

Tikhonov regularized exterior penalty methods for hierarchical variational inequalities

open access: yes2025 IEEE 64th Conference on Decision and Control (CDC)
We consider nested variational inequalities con- sisting in a (upper-level) variational inequality whose feasible set is given by the solution set of another (lower-level) variational inequality. This class of hierarchical equilibrium contains a wealth of important applications, including purely hierarchical convex bilevel optimization problems and ...
Meggie Marschner, Mathias Staudigl
openaire   +2 more sources

On a Stochastic Regularization Technique for Ill-Conditioned Linear Systems

open access: yesOpen Engineering, 2019
Knowledge about the input–output relations of a system can be very important in many practical situations in engineering. Linear systems theory comes from applied mathematics as an efficient and simple modeling technique for input–output systems ...
Moura Henrique Gomes   +3 more
doaj   +1 more source

Improved Tikhonov regularization method for load identification and structural response reconstruction

open access: yesJixie qiangdu
To improve the accuracy and efficiency of load identification and structural response reconstruction, an improved Tikhonov regularization method that simultaneously considers transfer matrix error and measurement error was proposed.
GAO Kele, YIN Hong, PENG Zhenrui
doaj  

Tensor Conjugate Gradient Methods with Automatically Determination of Regularization Parameters for Ill-Posed Problems with t-Product

open access: yesMathematics
Ill-posed problems arise in many areas of science and engineering. Tikhonov is a usual regularization which replaces the original problem by a minimization problem with a fidelity term and a regularization term.
Shi-Wei Wang, Guang-Xin Huang, Feng Yin
doaj   +1 more source

Approximate controllability of a semilinear delayed heat equation Tikhonov regularization

open access: yesСовременная математика: Фундаментальные направления
In this work, we study approximate controllability of a semilinear heat equation with delay using the Tikhonov regularization. The considered problem for partial differential equation is transformed into an equivalent operator equation.
S. Kumar
doaj   +1 more source

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