Results 61 to 70 of about 3,427 (187)

Primenenie metoda regulyarizatsii Tikhonova dlya opredeleniya ostatochnykh napryazheniy

Structural Mechanics of Engineering Constructions and Buildings, 2009
Application of the Tikhonov Regularization for residual stresses determination Fimkin A.I. The problem of determining the technological residual stresses in the volume of railway rails is considered.
ALEKSANDR IVANOVICh FIMKIN
doaj  

Tikhonov regularization method for identifying the space-dependent source for time-fractional diffusion equation on a columnar symmetric domain

Advances in Difference Equations, 2020
In this paper, we deal with the inverse problem of identifying the unknown source of time-fractional diffusion equation on a columnar symmetric domain. This problem is ill-posed.
Fan Yang, Pan Zhang, Xiao-Xiao Li, Xin-Yi Ma   +3 more
doaj   +1 more source

Integrated Multi‐Physics Characterisation of the Northern Kiruna Mining District With Machine‐Learning‐Assisted Interpretation

Geophysical Prospecting, Volume 74, Issue 7, September 2026.
ABSTRACT Integrated earth modelling aims to combine all available geoscientific information to derive one common earth model. However, combining multiple parameters in a meaningful way remains challenging. In this study, we aim to improve mineral exploration workflows through the integration of new magnetotelluric data with other geophysical and ...
Oskar Rydman, Ervin Veress, Maxim Yu. Smirnov, Tobias E. Bauer, Thorkild M. Rasmussen, Niklas Juhojuntti   +5 more
wiley   +1 more source

Local Asymmetric Least Squares (LAsLS) for Noisy and Complex Baseline Correction

Journal of Chemometrics, Volume 40, Issue 8, August 2026.
ABSTRACT The asymmetric least squares (AsLS) method is commonly used and works well when baseline characteristics are relatively uniform, but can be less accurate for non‐uniform, complex, or noisy baselines. Here, we present local AsLS (LAsLS), a local extension of AsLS that preserves the original penalized least‐squares framework while allowing ...
Adrián Gómez‐Sánchez, Berta Torres‐Cobos, Rodrigo Rocha de Oliveira   +2 more
wiley   +1 more source

Multiscale Characterization by Equibiaxial Tensile Testing and Time‐Domain 1H Solid State NMR for PTMC‐Based Networks for Tissue Growth

Macromolecular Materials and Engineering, Volume 311, Issue 8, August 2026.
Equibiaxial tensile testing combined with DMA and Time‐domain 1H${^1}H$ Solid State NMR reveals that the thermomechanical behavior of PTMC networks is strongly correlated with their internal network structure. Cross‐link density and distribution, influenced by macromer molecular weight, directly control molecular mobility, and mechanical response ...
Florian Feyne, Bas van Bochove, Steve Spoljaric, Mustapha Zidi, Ali Aghaei, Agustín Rios de Anda   +5 more
wiley   +1 more source

Using U‐Nets to Predict the Effects of Head Motion on Simulated Specific Absorption Rate for Ultra‐High Field Magnetic Resonance Imaging With Parallel Transmission

Magnetic Resonance in Medicine, Volume 96, Issue 2, Page 650-665, August 2026.
ABSTRACT Purpose Ultrahigh‐field MRI requires careful management of the specific absorption rate (SAR), which is subject and subject‐position dependent. Within‐scan subject motion may exacerbate local SAR exposure, necessitating large safety margins to prevent SAR underestimation, which hampers imaging performance.
Katherine Anna Blanter, Alix Plumley, Alper Gungor, Shaihan Malik, Emre Kopanoglu   +4 more
wiley   +1 more source

On a Level-Set Method for Ill-Posed Problems with Piecewise Nonconstant Coefficients

Journal of Applied Mathematics, 2013
We investigate a level-set-type method for solving ill-posed problems, with the assumption that the solutions are piecewise, but not necessarily constant functions with unknown level sets and unknown level values.
A. De Cezaro
doaj   +1 more source

Single‐Breathhold 3D MR Elastography in the Liver, With Simultaneous R2* and PDFF Mapping

Magnetic Resonance in Medicine, Volume 96, Issue 2, Page 682-697, August 2026.
Purpose To develop a sequence for the rapid acquisition of MR elastography (MRE) parameters in 3D, with simultaneous measurement of proton‐density fat fraction (PDFF) and R2* for multiparametric assessment of liver disease. Methods The proposed sequence uses an interleaved motion‐encoding scheme to acquire 3D volumes of all motion encodings and wave ...
Donovan P. Tripp, Anne‐Sophie van Schelt, Omar Darwish, Karl P. Kunze, Shamsa Al Harthy, Nader S. Metwalli, Ahmed M. Gharib, Claudia Prieto, René M. Botnar, Ralph Sinkus, Radhouene Neji   +10 more
wiley   +1 more source

Finite element method for solving nonlinear inverse diffusion problem

پژوهش‌های ریاضی, 2021
In this paper, a numerical method based on the finite element method and the least square scheme with the Tikhonov regularization method for nonlinear inverse diffusion problem is presented.
Hamed Zeidabadi, Reza pourgholi, S. Hashem Tabasi   +2 more
doaj  

Finite‐Block Polynomial and Volterra Structure in Reservoir Computing

Numerical Linear Algebra with Applications, Volume 33, Issue 4, August 2026.
ABSTRACT Reservoir computing is analyzed through the algebraic structure generated by finite‐width reservoirs on fixed input blocks. For linear and quadratic logistic activations, the induced input‐to‐state map admits an exact finite Volterra representation, yielding an explicit characterization of the associated hypothesis class.
Alfio Borzì
wiley   +1 more source