Results 41 to 50 of about 340,305 (333)

DBFFT: A displacement based FFT approach for non-linear homogenization of the mechanical behavior [PDF]

open access: yesInternational Journal of Engineering Science, 2019
Most of the FFT methods available for homogenization of the mechanical response use the strain/deformation gradient as unknown, imposing their compatibility using Green’s functions or projection operators.
S. Lucarini, J. Segurado
semanticscholar   +1 more source

Watermarking in WAV Files Bases on Phase Coding [PDF]

open access: yesEngineering and Technology Journal, 2011
The growth of the network multimedia open the illegal ways for users to use the digital media without any hindrance or control. This state created, the need for the copyright protection of various digital media.
Salah S. Alrawi   +2 more
doaj   +1 more source

Analisis Deret Waktu dari Produk yang Terjual Menggunakan Beberapa Teknik Populer

open access: yesJuTISI (Jurnal Teknik Informatika dan Sistem Informasi), 2023
Penjualan merupakan komponen terpenting dalam suatu perusahaan bidang industri. Hal ini dikarenakan, bila terjadi penjualan berarti terdapat pendapatan ke dalam perusahaan, oleh karena itu penting untuk dilakukan analisis terhadap produk-produk yang ...
Laras Ervintyana   +2 more
doaj   +1 more source

Correcting soft errors online in fast fourier transform [PDF]

open access: yes, 2017
While many algorithm-based fault tolerance (ABFT) schemes have been proposed to detect soft errors offline in the fast Fourier transform (FFT) after computation finishes, none of the existing ABFT schemes detect soft errors online before the computation ...
Chen, Jieyang   +9 more
core   +1 more source

Pendeteksian Harmonisa Arus Berbasis Feed Forward Neural Network Secara Real Time

open access: yesJurnal Rekayasa Elektrika, 2020
The development of power electronics converters has been widespread in the industrial, commercial, and home applications. The device is considered to produce harmonics in non-linear loads. Harmonics cause a decrease in power quality in the electric power
Endro Wahjono   +7 more
doaj   +1 more source

FFT Shift

open access: yesThe Insight Journal, 2006
A common usage when working with Fourier transform is to shift the the image to put the zero-frequency component in the center of the image. This contribution comes with a filter to perform this transform.
openaire   +2 more sources

The violent ground motion before the Jiuzhaigou earthquake Ms7.0

open access: yesOpen Geosciences, 2020
An Ms7.0 earthquake occurred in Jiuzhaigou, Sichuan Province, China, on August 8, 2017. In this study, we used the vertical component data from 31 seismic stations near the epicenter from May 1 to August 20, 2017, to calculate the amplitude spectrum ...
Xu Kangsheng, Li Ying
doaj   +1 more source

PLL wrap function for synchronization in phase jump disturbances

open access: yesIngeniería e Investigación, 2021
Synchrony plays a major role in the interconnection process between local electric power generation systems and the electrical grid. Grid phase disturbances prevent the generation system from maintaining synchrony.
Clementina Rueda Germán   +3 more
doaj   +1 more source

FFT-LB modeling of thermal liquid-vapor systems

open access: yes, 2011
We further develop a thermal LB model for multiphase flows. In the improved model, we propose to use the FFT scheme to calculate both the convection term and external force term. The usage of FFT scheme is detailed and analyzed.
A. Cristea   +21 more
core   +1 more source

Symmetric FFTs [PDF]

open access: yesMathematics of Computation, 1986
In this paper, we examine the FFT of sequences x n = x N + n {x_n} = {x_{N + n}} with period N that satisfy certain symmetric relations.
openaire   +1 more source

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