Results 41 to 50 of about 73,593 (306)
A 64-point Fourier transform chip for high-speed wireless LAN application using OFDM
, 2004 In this article, we present a novel fixed-point 16-bit word-width 64-point FFT/IFFT processor developed primarily for the application in the OFDM based IEEE 802.11a Wireless LAN (WLAN) baseband processor.
Jagdhold, U +5 more
core +1 more source
Design and Implementation of Three-phase Precision Program-controlled Standard Source
Zhejiang dianli, 2022 The traditional program-controlled standard source cannot meet the requirements of the OIML R46 standard on small current and harmonic output accuracy. For the sake of improving the steady-state output accuracy and dynamic response speed of the standard ...
WANG Weihong +4 more
doaj +1 more source
A machine sound monitoring for predictive maintenance focusing on very low frequency band
SICE Journal of Control, Measurement, and System Integration, 2021 The monitoring of machines is one of key issues in the Industry 4.0 era. Particularly, the monitoring realized by non-contact sensors is drawing attention since it is easy to install and to avoid any problems caused by sensors accidentally dropping down ...
Kazuki Tsuji +5 more
doaj +1 more source
Drvna Industrija, 2022 The article presents theoretical analysis of machined surface roughness after sawing on circular saw and implementation of fast Fourier transform (FFT) as a possible simple filtering method for filtering out just the saw blade and saw tooth influence on ...
Igor Đukić +3 more
doaj +1 more source
The 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
A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions
Advanced Engineering Materials, EarlyView.This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice +2 more
wiley +1 more source
FFT Consolidated Feature Space Methods for Image Ｒepresentation
Journal of Harbin University of Science and Technology, 2020 Fast Fourier Transform ( FFT) method has been widely used in image recognition. However，FFTmethod faces some challenges，such as occlusion of different angles，varying lighting and changeable facial expression. We combine fast Fourier transform and feature
SUN Ling +5 more
doaj +1 more source
Spectral Eigenface Representation for Human Identification [PDF]
Engineering and Technology Journal, 2010 Human identification based on face images, as physical biometric means, plays animperative role in many applications area. The methods for human identification usingface image uses either part of the face, all face, or mixture from these methods, in ...
Hanaa M. Salman
doaj +1 more source
FFT-based Inverse Homogenization for Cellular Material Design
, 2022 Besides constituting components, the properties of composites are highly relevant to their microstructures. The work proposed a fast Fourier transform (FFT)-based inverse homogenization method implemented by the bi-directional evolutionary structural ...
Zeyao Chen (17745288) +4 more
core
Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy
Advanced Engineering Materials, EarlyView.A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang +10 more
wiley +1 more source