Results 81 to 90 of about 3,143,040 (244)

Sequential Outlier Detection in Nonstationary Time Series

Journal of Time Series Analysis, EarlyView.
ABSTRACT A novel method for sequential outlier detection in nonstationary time series is proposed. The method tests the null hypothesis of “no outlier” at each time point, addressing the multiple testing problem by bounding the error probability of successive tests, using extreme‐value theory. The asymptotic properties of the test statistic are studied
Florian Heinrichs, Patrick Bastian, Holger Dette   +2 more
wiley   +1 more source

A reliable method based on second kind Chebyshev polynomial for the fractional model of Bloch equation

Alexandria Engineering Journal, 2018
In this paper we present a reliable method based on second kind Chebyshev polynomial for the approximate solution of fractional Bloch equation in Nuclear Magnetic Resonance (NMR). The main advantages of the proposed method that it converts the fractional
Harendra Singh, C.S. Singh
doaj   +1 more source

What If Each Voxel Were Measured With a Different Diffusion Protocol?

Magnetic Resonance in Medicine, Volume 95, Issue 4, Page 2277-2290, April 2026.
ABSTRACT Purpose Expansion of diffusion MRI (dMRI) both into the realm of strong gradients and into accessible imaging with portable low‐field devices brings about the challenge of gradient nonlinearities. Spatial variations of the diffusion gradients make diffusion weightings and directions non‐uniform across the field of view, and deform perfect ...
Santiago Coelho, Gregory Lemberskiy, Ante Zhu, Hong‐Hsi Lee, Nastaren Abad, Thomas K. F. Foo, Els Fieremans, Dmitry S. Novikov   +7 more
wiley   +1 more source

Numerical solution method for multi-term variable order fractional differential equations by shifted Chebyshev polynomials of the third kind

, 2021
Sadiye Nergis Tural-Polat, Arzu Turan Dıncel   +1 more
openalex   +1 more source

A Chebyshev Polynomial‐Based Wind Speed Profile Characterization Framework: Applications in Mesoscale Model Evaluation

Wind Energy, Volume 29, Issue 2, February 2026.
ABSTRACT This study presents a polynomial‐based wind speed profile characterization framework that approximates full vertical profiles using five physically meaningful Chebyshev polynomial coefficients. The framework captures key morphological features of wind profiles, including mean wind speed, vertical shear, curvature, inflection‐related behavior ...
Harish Baki, Sukanta Basu
wiley   +1 more source

Super‐Convergent Meshless Computations for Active Vibration Control of Bi‐Directional Functionally Graded Terfenol‐D Beams with Twisted Geometry

Advanced Theory and Simulations, Volume 9, Issue 1, January 2026.
This study develops a superconvergent meshless method to analyze and control vibrations in twisted, bidirectional functionally graded Terfenol‐D beams. By optimizing magnetostrictive patch placement, it demonstrates effective vibration suppression under dynamic loads, highlighting the design potential of strategically graded materials in complex ...
Mukund A. Patil, Tanmoy Mukhopadhyay, Susmita Naskar   +2 more
wiley   +1 more source

Sulfur‐Enhanced Performance and Durability of SrFe0.75Mo0.25O3−δ/Ce0.9Gd0.1O2−δ Fuel Electrodes for Solid Oxide Fuel Cell

Advanced Energy and Sustainability Research, Volume 7, Issue 1, January 2026.
Conventional Ni‐cermet fuel electrodes in solid oxide fuel cells (SOFC) suffer from poor tolerance toward sulfur impurities. Here, Ni‐free perovskite‐based SrFe0.75Mo0.25O3−δ (SFM)/Ce0.9Gd0.1O2−δ (CGO) fuel electrodes are investigated with and without trace hydrogen sulfide addition.
Matthias Riegraf, Noriko Sata, Katherine Develos‐Bagarinao, Rémi Costa   +3 more
wiley   +1 more source

Discrete spectral Tau shifted Chebyshev method for solving a system Volterra integro-fractional differential equations [PDF]

, 2023
Suha SHIHAB, Shazad Shawki Ahmed
openalex   +1 more source

Extraction and Comprehensive Characterization of Starch From Ryegrass (Lolium multiflorum L.) Seeds as a Non‐Conventional Source

Starch - Stärke, Volume 78, Issue 1, January 2026.
A native starch was extracted from ryegrass (Lolium multiflorum L.), yielding a high‐purity product with a significant starch content. The starch exhibited type A and V crystallinity, with a mean particle size (D50) ~7 nm, high swelling power, and low retrogradation tendency.
Thaís Silveira Pimenta, Geycson Figueiredo Dias, Hugo José Martins Carvalho, Nathalia de Andrade Neves, Sérgio Michielon de Souza, Carlos Wanderlei Piler de Carvalho, Elizabeth Harumi Nabeshima, Izabela Dutra Alvim, Maria Teresa Pedrosa Silva Clerici, Mária Herminia Ferrari Felisberto, Marcio Schmiele   +10 more
wiley   +1 more source

Chebyshev collocation method for fractional Newell-Whitehead-Segel equation

Alexandria Engineering Journal
In this paper, a collocation approach for the fractional Newell-Whitehead-Segel equation is described. The finite difference method is used to discretized the time-fractional derivative, and Chebyshev functions are used for interpolating the spatial ...
E. Gebril, M.S. El-Azab, M. Sameeh
doaj   +1 more source