Results 71 to 80 of about 274,335 (270)
Enhancement of Fingerprint Using FFT×|FFT|n Filter
Procedia Computer Science, 2015 AbstractFingerprint enhancement is an indispensable task in the Automatic Fingerprint Identification System. In this paper, a simple method for the enhancement of fingerprint images is presented, which is based on FFT. The FFT is found out after the fingerprint image is partitioned into blocks.
Neethu, S. +2 more
openaire +1 more source
Toughening β‐Ga2O3 via Mechanically Seeded Dislocations
Advanced Functional Materials, EarlyView.β‐Ga2O3 is promising for next‐generation semiconductors but its brittleness limits flexible and high‐precision applications. Here, mechanically seeded dislocations introduced by surface deformation improved damage tolerance in (001) β‐Ga2O3. Nanoindentation and characterization show dislocations suppress cleavage cracks by enabling stable plastic ...
Zanlin Cheng +5 more
wiley +1 more source
Simulation of interaction of antennas in the near zone
Вісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електронікаRelevance. Obtaining the minimization or maximization of the interaction between the radiating and receiving antennas (or the receiving antenna with fields reflected from some obstacle) due to the orientation and location of the antennas at a certain ...
М. Legenkiy, V. Khrychov
doaj +1 more source
Teknika, 2021 Judul: Pengembangan sistem pemantauan getaran untuk model mesin berputar menggunakan fast fourier transformTitle: Development of a vibration monitoring system for rotating machine models using fast Fourier transformSering kali terjadi kerusakan mekanis ...
Iip Muhlisin, Fachri Agung, Riki Effendi
doaj +1 more source
Advanced Functional Materials, EarlyView.An innovative medium entropy alloy (MEA) composite material was fabricated via micro laser powder bed fusion (μ‐LPBF) with appropriate nano‐ceramic particles doping and exhibited markedly improved overall performance, including synergistically enhanced strength and ductility, increased hardness and compressive strength, improved wear resistance and ...
Zhonglin Shen, Mingwang Fu
wiley +1 more source
Power spectral analysis of occipital area during eyes-closed and eyes-open
LiberabitBackground: Power spectral analysis of the occipital cortex is essential for characterizing brain activity during attentional and relaxed states. Objectives: This study aims to develop a predictive model capable of distinguishing between eyes-closed (EC)
Adolfo González-González +3 more
doaj +1 more source
Efficient SAR Raw Data Compression in Frequency Domain [PDF]
, 1999 SAR raw data compression is necessary to reduce huge amounts of SAR data for a memory on board a satellite, space shuttle or aircraft and for later downlink to a ground station.
Benz, U.C., Fischer, J.V., Moreira, A.
core
, 2010 We propose a new type of the Ensemble Kalman Filter (EnKF), which uses the Fast Fourier Transform (FFT) for covariance estimation from a very small ensemble with automatic tapering, and for a fast computation of the analysis ensemble by convolution ...
Beezley, Jonathan D. +2 more
core +1 more source
Advanced Functional Materials, EarlyView.High‐energy electron impact in plasma catalysis often causes excessive dissociation of active intermediates, limiting C2+ product selectivity. To address this challenge, a bio‐inspired stoma‐shell nanoarchitecture is designed to decouple electron impact from catalytic reaction zones.
Nan Zou +5 more
wiley +1 more source
Nihon Kikai Gakkai ronbunshuIn a previous study, we had proposed a method for detecting abnormalities using an Autoencoder. It considers the amplitude value of each frequency spectrum while performing the FFT analysis of time-series data.
Fuki SAKA +5 more
doaj +1 more source