Results 51 to 60 of about 22,208 (203)

Total X‐Ray Illumination for Absolute Quantification of Crystalline Phases and Amorphous Content in PVDF and P(VDF‐TrFE)

Macromolecular Materials and Engineering, EarlyView.
A rigorous method, Total Illumination by X‐rays (TIX), is presented to quantify crystalline and amorphous phases in organic materials. Mitigating challenges such as low microabsorption and high amorphous content, an improved, general framework is established, applicable to polymers, MOFs, biological materials, etc.
Shaashwat Saraff, Giulio Isacco Lampronti, Sohini Kar‐Narayan   +2 more
wiley   +1 more source

New Upper Bounds for the Weighted Chebyshev Functional

Annales Mathematicae Silesianae
New upper bounds for the weighted Chebyshev functional under various conditions, including those of Steffensen type, are given. The obtained results are used to establish some new bounds for the Jensen functional.
Bakula Milica Klaričić, Pečarić Josip   +1 more
doaj   +1 more source

Next Generation 7 Tesla Arterial Spin Labeling With Rotated Spiral Acquisition Enables Mesoscale Resolution in 3D Brain Perfusion and Functional MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To achieve high resolution (≤ 1 mm isotropic) whole‐brain perfusion imaging at 7 T with next generation ASL pulse sequence, reconstruction algorithm, and MRI hardware. Methods We capitalized on three major innovations: (1) FLASH‐based pseudo‐Continuous ASL (pCASL) sequence with rotated golden‐angle stack‐of‐spirals (rGA‐SoS) sampling; (
Chenyang Zhao, Fanhua Guo, Zidong Yang, Xingfeng Shao, Samantha J. Ma, Alexander J. S. Beckett, An T. Vu, David A. Feinberg, Danny J. J. Wang   +8 more
wiley   +1 more source

Certain Chebyshev Type Integral Inequalities Involving Hadamard’s Fractional Operators

Abstract and Applied Analysis, 2014
We establish certain new fractional integral inequalities for the differentiable functions whose derivatives belong to the space Lp([1,∞)), related to the weighted version of the Chebyshev functional, involving Hadamard’s fractional integral operators ...
Sotiris K. Ntouyas, Sunil D. Purohit, Jessada Tariboon   +2 more
doaj   +1 more source

Numerical Analysis of the Chebyshev Collocation Method for Functional Volterra Integral Equations

Trends in Computational and Applied Mathematics, 2020
The collocation method based on Chebyshev basis functions, coupled Picard iterative process, is proposed to solve a functional Volterra integral equation of the second kind.
J. S. Azevedo, S. M. Afonso, M. P. G. Silva   +2 more
doaj   +1 more source

Stochastic Density Functional Theory at Finite Temperatures

, 2018
Simulations in the warm dense matter regime using finite temperature Kohn-Sham density functional theory (FT-KS-DFT), while frequently used, are computationally expensive due to the partial occupation of a very large number of high-energy KS eigenstates ...
Baer, Roi, Cytter, Yael, Neuhauser, Daniel, Rabani, Eran   +3 more
core   +1 more source

Bending Analysis of Thickness‐ and Shear‐Deformable Materially Imperfect Composite Shells With von Kármán‐Type Geometric Nonlinearities

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Geometrically nonlinear static analysis of materially imperfect composite doubly curved shells is investigated via the generalised differential quadrature method. The effects of both shear and thickness deformation are considered through a thickness‐ and shear‐deformable third‐order theory formulated in curvilinear coordinates, while the ...
Behrouz Karami, Mergen H. Ghayesh, Shahid Hussain, Marco Amabili   +3 more
wiley   +1 more source

Chebyshev–Halley methods for analytic functions

Journal of Computational and Applied Mathematics, 2008
The Chebyshev-Halley iteration method \[ z^{n+1}=z^n - u_f(z^n)\left[1+\frac{L_f(z^n)}{2(1-\alpha L_f(z^n))}\right] \] is discussed for approximating zeros of an analytic function \(f(z)\). Here \(u_f(z)=\frac{f(z)}{f'(z)}\) and \(L_f(z)=\frac{f(z)f''(z)}{(f'(z))^2}\). \(\alpha\) is a real constant.
openaire   +1 more source

Pickin' up good vibrations: a systematic review of footfall detection and analysis in the realm of wildlife surveying

Wildlife Biology, EarlyView.
Exploration of new wildlife surveying methodologies that leverage advances in sensor technology and machine learning has led to tentative research into the application of seismology techniques. This, most commonly, involves the deployment of a footfall trap – a seismic sensor and data logger customised for wildlife footfall.
Benjamin J. Blackledge, Luigi La Spada, Robert A. Briers, Niamh M. McHugh, Patrick J. C. White   +4 more
wiley   +1 more source

Chebyshev Type Integral Inequalities Involving the Fractional Hypergeometric Operators

Abstract and Applied Analysis, 2014
By making use of the fractional hypergeometric operators, we establish certain new fractional integral inequalities for synchronous functions which are related to the weighted version of the Chebyshev functional. Some consequent results and special cases
D. Baleanu, S. D. Purohit
doaj   +1 more source