Results 111 to 120 of about 79,804 (306)

Some Fourier inequalities for orthogonal systems in Lorentz–Zygmund spaces

open access: yesJournal of Inequalities and Applications, 2019
A number of classical inequalities and convergence results related to Fourier coefficients with respect to unbounded orthogonal systems are generalized and complemented. All results are given in the case of Lorentz–Zygmund spaces.
G. Akishev, L. E. Persson, A. Seger
doaj   +1 more source

The Fourier coefficients of Eisenstein series newforms [PDF]

open access: yes, 2019
In this article, we study the Fourier coefficients of Eisenstein series newforms. We obtain a sharp refinement of the strong multiplicity-one theorem by showing that the density of primes p for which the pth Hecke eigenvalues of two distinct Eisenstein ...
Thompson, L., Linowitz, B.
core   +1 more source

Digitizing the Filtration Interface: A Smart, Modular Janus Wood Platform for Self‐Reporting Oil/Water Remediation

open access: yesAdvanced Functional Materials, EarlyView.
This work developed a smart Janus wood membrane integrating asymmetric wettability with built‐in electrical sensing for oil‐water separation. The membrane achieved > 99.5% separation efficiency and high flux by leveraging wood's natural anisotropic pore structure.
Kaiwen Chen   +10 more
wiley   +1 more source

Oxidized MoS2‐Based Multifunctional Memristive Hardware for Energy‐Efficient mmWave Signal Processing and In‐Memory Matrix Multiplication

open access: yesAdvanced Functional Materials, EarlyView.
Thermally oxidized MoS2‐based radio‐frequency switches enable a multifunctional platform that unifies broadband RF switching and in‐memory computation. The device achieves a cutoff frequency of 33.2 THz with high energy efficiency and supports hardware‐aware signal processing.
Juho Son   +5 more
wiley   +1 more source

Approximation of Bivariate Functions via Smooth Extensions

open access: yesThe Scientific World Journal, 2014
For a smooth bivariate function defined on a general domain with arbitrary shape, it is difficult to do Fourier approximation or wavelet approximation. In order to solve these problems, in this paper, we give an extension of the bivariate function on a ...
Zhihua Zhang
doaj   +1 more source

Hierarchical MXene‐Derived NTP/C Nanohybrids for Cryogenic Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A hierarchical MXene‐derived NaTi2(PO4)3/C nanohybrid enables efficient sodium‐ion storage down to −40°C by integrating fast ion–electron transport pathways with an ether‐based electrolyte. The system promotes dominant pseudocapacitive behavior and forms a robust inorganic‐rich SEI, collectively mitigating kinetic and interfacial limitations, thereby ...
M. Sai Bhargava Reddy   +5 more
wiley   +1 more source

Some properties of Fourier coefficients

open access: yes, 2018
A partir del análisis que se realiza a las funciones periódicas, su representación en series de Fourier y su estudio mediante los núcleos de Dirichlet y Fejer, se estudian de las propiedades de los coeficientes de Fourier, posteriormente se demuestra la
Homez Ordoñez, Jennyfer Paola
core  

One‐Step Microfluidic Manufactured Fucose‐Decorated Sweetosomes Choose the Time and the Road for Their Intracellular Journey to Cancer Treatment

open access: yesAdvanced Healthcare Materials, EarlyView.
Sweetosomes, a new class of fucose‐decorated liposomes, are developed via a one‐step microfluidic process without surface chemistry. This study elucidates their main caveolae‐mediated entry and distinct endosomal trafficking. These nanostructures demonstrate superior endosomal escape, organelle acidity modulation, and prolonged plasma persistence ...
Mattia Tiboni   +13 more
wiley   +1 more source

NEW APPROACH FOR 3D OBJECT RECOGNITION USING NON UNIFORM FOURIER AND MOMENTS COEFFICIENTS [PDF]

open access: yesJournal of Engineering Science and Technology, 2017
In this paper, new descriptors have been proposed which are invariant to rotation and affinity transformations (Non Uniform Fourier and moments coefficients).
KHALID AZNAG   +3 more
doaj  

Convergence of Fourier series with complex quasimonotone coefficients and coefficients of bounded variation of order m

open access: yes, 1986
L1-convergence theorems for Fourier series with complex quasimonotone coefficients are generalized. The class of null sequences of bounded variation of order m is extended and the point-wise theorem for Fourier series with such coefficients is ...
Stanojevic, Vera B, Vera B Stanojevic
core   +1 more source

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