Results 131 to 140 of about 39,241 (326)

Gaborlet‐guided sparse filtering: A novel intelligent method for lithology identification by vibration signals while drilling

Deep Underground Science and Engineering, EarlyView.
The flowchart illustrates rock specimen testing, vibration signal acquisition, and feature extraction with Gaborlet and sparse filtering for classification. Abstract Traditional lithology identification methods mainly rely on core sampling and well‐logging data.
Jian Hao, Danqi Zhang, Zhenqi Song, Jinrui Wang, Qi Wang, Heqing Liu   +5 more
wiley   +1 more source

Monte Carlo approximation of weakly singular integral operators

, 2006
We study the randomized approximation of weakly singular integral operators. For a suitable class of kernels having a standard type of singularity and being otherwise of finite smoothness, we develop a Monte Carlo multilevel method, give convergence ...
Stefan Heinrich, Heinrich, Stefan
core   +1 more source

A Systematic Review and Meta‐Analysis of Psychological Therapies for Avoidant/Restrictive Food Intake Disorder (ARFID) in Adolescents and Adults

International Journal of Eating Disorders, EarlyView.
ABSTRACT Objective The efficacy of psychological therapies for adolescents and adults with avoidant/restrictive food intake disorder (ARFID) has yet to be rigorously analyzed through systematic review or meta‐analysis. Method We identified articles from seven databases that presented psychological therapies for adolescents and adults with ARFID. First,
Copeland G. Winten, Esben Strodl, P. Evelyna Kambanis, Lynda J. Ross, Jennifer J. Thomas   +4 more
wiley   +1 more source

On the rate of convergence of projection-iterative methods for classes of weakly singular integral equations

, 1995
Для класів слабо-сингулярних інтегральних рівнянь II роду, ядра яких мають степеневу особливість, знайдено оптимальний порядок швидкості збіжності проекційно-ітеративних методів. Крім того, розглянуто ітераційні методи типу метода Ю. Д.
Аскаров, М., Переверзев, С.В.   +1 more
core   +1 more source

A Spectral Method Based on Hahn Polynomials for Numerical Solution of Fractional Integro-Differential Equations with Weakly Singular Kernel

پژوهش‌های ریاضی, 2020
Introduction Despite wide applications of constant order fractional derivatives, some systems require the use of derivatives whose order changes with respect to other parameters.
Farideh Salehi, Habibollah Saeedi, Mahmoud Mohseni Moghadam   +2 more
doaj  

Matrix Whittaker processes. [PDF]

Probab Theory Relat Fields, 2023
Arista J, Bisi E, O'Connell N.
europepmc   +1 more source

Boundedness of weakly singular integral operators on domains

, 2009
The monograph dissertation deals with kernel integral operators and their mapping properties on Euclidean domains. The associated kernels are weakly singular and examples of such are given by Green functions of certain elliptic partial differential ...
Vähäkangas, Antti
core  

From distant shores to an emerging island: the role of surface and subsurface transport in modeling seed dispersal

Ecography, EarlyView.
Long‐distance seed dispersal by ocean currents plays a critical role in structuring coastal plant communities. As direct observations of this phenomenon are infeasible, numerical modeling is a valuable tool. Here, we use Lagrangian particle tracking to examine the colonization of the newly forming island Norderoogsand (German Bight, Wadden Sea) by five
Jakob Rahner, Rahel Vortmeyer‐Kley, Ulf Gräwe, Michael Kleyer, Ulrike Feudel   +4 more
wiley   +1 more source

Analytical and Numerical Treatment of Evolutionary Time-Fractional Partial Integro-Differential Equations with Singular Memory Kernels

Fractal and Fractional
Evolution equations with fractional-time derivatives and singular memory kernels are used for modeling phenomena exhibiting hereditary properties, as they effectively incorporate memory effects into their formulation.
Kamel Al-Khaled, Isam Al-Darabsah, Amer Darweesh, Amro Alshare   +3 more
doaj   +1 more source

Fredholm boundary-value problem for the system of fractional differential equations. [PDF]

Nonlinear Dyn, 2023
Boichuk O, Feruk V.
europepmc   +1 more source