Results 41 to 50 of about 6,303,122 (262)

Estimation of discontinuous parameters in linear elliptic equations by a regularized inverse problem

Partial Differential Equations in Applied Mathematics, 2022
To calculate the parameters k in a stationary model Aku=ffrom measurements yˆof the solution u, i.e. to solve the inverse problem, usually a regularized minimization problem is solved and its solution kˆis considered as estimate of the true parameters ...
Jochen Merker, Aleš Matas
doaj   +1 more source

Inverse Coefficient Problem for Elliptic Hemivariational Inequality

, 2001
In this paper we consider the problem of identification of a discontinuous coefficient in elliptic hemivariational inequality. First we prove an existence theorem for an inverse problem and we establish the boundary homogenization result for the direct problem. Then we study the asymptotic behavior of the set of solutions to the inverse problem.
Migórski, Stanisław, Ochal, Anna
openaire   +2 more sources

Spatiotemporal Computational Meta‐Imager for Broadband Dual‐Layer Optical Convolution

Advanced Science, EarlyView.
A single‐layer polarization‐multiplexed meta‐imager achieves factorized dual‐layer broadband convolution via spatiotemporal kernel decomposition. Fixed Bessel‐vortex bases and time‐sequential liquid‐crystal modulation deliver tunable signed weights and in‐situ fabrication‐error compensation. Experiments verify improved classification performance across
Mengguang Wang, Chenglong Zheng, Huaping Zang, Changwei Zhang, Huai Xia, Chang Wang, Zhenrong Zheng   +6 more
wiley   +1 more source

Intelligent Field‐Adaptive Electrohydrodynamic Printing for Curved Conformal Electronics

Advanced Science, EarlyView.
To mitigate residual‐charge accumulation and spatial electric‐field variations during electrohydrodynamic printing on curved insulating substrates, an intelligent field‐adaptive framework combines alternating‐electric‐field modulation, equivalent electrical gap characterization, and machine‐learning‐guided parameter inversion and pathwise regulation ...
Chang Liu, Yiwen Feng, Xu Chen, Kaiwen Chen, Ran Zhang, Xiaopeng Zhang, Liujia Suo, Xiangji Chen, Zefei Li, Fengshu Wang, Ruixuan Xu, Shuaiwu Liu, Shiwen Liang, Lingjie Kong, Dazhi Wang   +14 more
wiley   +1 more source

Numerical solution to Bitsadze-Samarskii type elliptic overdetermined multipoint NBVP

Boundary Value Problems, 2017
This paper is devoted to a Bitsadze-Samarskii type overdetermined multipoint nonlocal boundary value problem (NBVP). This inverse problem is reduced to an auxiliary multipoint NBVP.
Charyyar Ashyralyyev
doaj   +1 more source

Recent progress in the conductivity reconstruction in Calderón’s problem

Journal of Innovative Applied Mathematics and Computational Sciences, 2021
In this work, we study a nonlinear inverse problem for an elliptic partial differential equation known as the Calderón problem or the inverse conductivity problem.
Manal Aoudj
doaj  

An Efficient Double Parameter Elliptic Curve Digital Signature Algorithm for Blockchain

IEEE Access, 2021
The classic Elliptic curve digital Signature Algorithm (ECDSA) uses one inversion operation in the process of signature and verification, which greatly reduces the efficiency of digital signatures.
Shuang-Gen Liu, Wan-Qi Chen, Jia-Lu Liu
doaj   +1 more source

Inverse Problems of Finding the Lowest Coefficient in the Elliptic Equation [PDF]

Journal of Siberian Federal University. Mathematics & Physics, 2001
The article is devoted to the study of problems of finding the non-negative coefficient q(t) in the elliptic equation utt + a2Δu − q(t)u = f(x, t) (x = (x1, . . . , xn) ∈ Ω ⊂ Rn, t ∈ (0, T), 0 < T < +∞, Δ — operator Laplace on x1, . . . , xn).
Kozhanov, Alexander I., Shipina, Tatyana N.   +1 more
openaire   +2 more sources

A Breadth‐First Pruned‐Enriched Rosenbluth Method for Force–Extension Simulations of Confined Semiflexible Chains

Advanced Intelligent Discovery, EarlyView.
The behaviors of semiflexible polymers such as DNA and protein are often reshaped by coupled interactions. Monte Carlo simulations assist in studying these systems. This work recasts the traditional chain‐growth strategy into a new framework: a fixed number of chains grow synchronously, while less relevant chains to the target system are removed and ...
Yihan Zhao, Jizeng Wang
wiley   +1 more source

Clinically Informed Intelligent Classification of Ovarian Cancer Cells by Label‐Free Holographic Imaging Flow Cytometry

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
Quantitative phase maps of single cells recorded in flow cytometry modality feed a hierarchical architecture of machine learning models for the label‐free identification of subtypes of ovarian cancer. The employment of a priori clinical information improves the classification performance, thus emulating the clinical application of liquid biopsy during ...
Daniele Pirone, Beatrice Cavina, Daniele Gaetano Sirico, Martina Mugnano, Vittorio Bianco, Lisa Miccio, Anna Myriam Perrone, Anna Maria Porcelli, Giuseppe Gasparre, Ivana Kurelac, Pasquale Memmolo, Pietro Ferraro   +11 more
wiley   +1 more source