Results 91 to 100 of about 6,623 (299)
Wavelet-based transforms as a means of signal separation
, 2008 The goal of this paper is to facilitate the use of waveletbased transforms in BSS (and, more generally, ICA) algorithms. We investigate the performance of transforms such as the ContinuousWavelet Transform, Discrete Wavelet Transform and Discrete Wavelet
Declan Quinn (8775455) +1 more
core
All‐Optical Reconfigurable Physical Unclonable Function for Sustainable Security
Advanced Materials, EarlyView.An all‐optical reconfigurable physical unclonable function (PUF) is demonstrated using plasmonic coupling–induced sintering of optically trapped gold nanoparticles, where Brownian motion serves as a robust entropy source. The resulting optical PUF exhibits high encoding density, strong resistance to modeling attacks, and practical authentication ...
Jang‐Kyun Kwak +4 more
wiley +1 more source
BIOMETRIC KEYSTROKE RECOGNITION BASED ON HYBRID SVD AND WAVELET FOR FEATURE TRANSFORMATION
Journal of Engineering and Sustainable Development, 2016 The main aim of this work is to use a keystroke biometric system as a behavioral type of biometrics and to improve the accuracy and dependability of the system.
Zeina Waleed Abaas
doaj
Face recognition using decimated redundant discrete wavelet transforms
, 2012 As discrete wavelet transform (DWT) is sensitive to the translation/shift of input signals, its effectiveness could be lessened for face recognition, particularly when the face images are translated.
Pedrycz, Witold +2 more
core
Resonant Domain Wall Dynamics in a Three‐Dimensional Magnetic Nano Double Helix
Advanced Materials, EarlyView.3D magnetic nanostructures promise exciting possibilities for magnetization dynamics. However, experimental realizations remain scarce. In nanoprinted cobalt double helices, time‐resolved X‐ray microscopy reveals harmonic domain wall dynamics. Simulations identify the mode and additional higher‐frequency resonances, revealing a rich dynamic landscape ...
Pamela Morales‐Fernández +15 more
wiley +1 more source
Fixed Wordsize Implementation of Lifting Schemes
EURASIP Journal on Advances in Signal Processing, 2007 We present a reversible nonlinear discrete wavelet transform with predefined fixed wordsize based on lifting schemes. Restricting the dynamic range of the wavelet domain coefficients due to a fixed wordsize may result in overflow.
Tanja Karp
doaj +1 more source
Emergent Spin Supersolids in Frustrated Quantum Materials
Advanced Materials, EarlyView.This review highlights developments in the study of spin super‐solids in frustrated quantum materials. Advanced experimental characterizations and computational studies enable a comprehensive understanding of the driving mechanisms of spin super‐solidity in various layered transition‐metal compounds, bridging materials, experiments, and theory aspects.
Yixuan Huang +2 more
wiley +1 more source
Advanced Materials, EarlyView.A giant insulator to metal transition and emergent superparamagnetism are revealed by nanoparticle exsolution in non‐stoichiometric titanate perovskite thin films. By combining transport, synchrotron spectroscopy, and first‐principles calculations, this work reveals how defect reconfiguration and lattice reconstruction fundamentally reshape electronic ...
Sungil Kim +11 more
wiley +1 more source
Orthogonal-based wavelet analysis of wind turbulence and correlation between turbulence and forces
Vietnam Journal of Mechanics, 2007 Recent models of wind turbulence and turbulence-force relation as well still contain uncertainties. Further studies on them are needed to gain the better knowledge to refine the existing problems from analytical computations to wind tunnel's physical ...
Le Thai Hoa, Nguyen Dong Anh
doaj +1 more source
European Equity Market Integration and Optimal Investment Horizons – Evidence from Wavelet Analysis [PDF]
In the paper the process of equity market integration in Europe is examined from the wavelet perspective. The method applied is the Continuous Discrete Wavelet Transform that enables to perform global and local wavelet variance and correlation ...
Joanna Bruzda
core