Results 61 to 70 of about 489,037 (244)
Baltic Journal of Economics, 2019 This paper investigates how oil price changes affect consumer price inflation in eleven Central and Eastern European countries. We use a wavelet-based Markov switching approach in order to distinguish between the effects at different time horizons.
Dejan Živkov +2 more
doaj +1 more source
Multiresolution and wavelets [PDF]
Proceedings of the Edinburgh Mathematical Society, 1994 Multiresolution is investigated on the basis of shift-invariant spaces. Given a finitely generated shift-invariant subspaceSofL2(ℝd), letSkbe the 2k-dilate ofS(k∈ℤ). A necessary and sufficient condition is given for the sequence {Sk}k∈ℤto fom a multiresolution ofL2(ℝd). A general construction of orthogonal wavelets is given, but such wavelets might not
Rong-Qing Jia, Zuowei Shen
openaire +3 more sources
, 2009 In this brief, by combining an efficient wavelet representation with a coupled map lattice model, a new family of adaptive wavelet neural networks, called lattice dynamical wavelet neural networks (LDWNNs), is introduced for spatio-temporal system ...
Billings, S.A. +3 more
core +2 more sources
Robust Load Frequency Control in Cyber-Vulnerable Smart Grids with Renewable Integration
EnergiesFrequency regulation (FR) constitutes a fundamental aspect of power system stability, particularly in the context of the growing integration of intermittent renewable energy sources (RES) and electric vehicles (EVs).
Rambaboo Singh +3 more
doaj +1 more source
Spectral Lags and Characteristic Time Scales of GRBs with Known Redshift
Journal of Advanced Research in Natural and Applied SciencesIn this study, we extracted two key prompt emission parameters, i.e., spectral lags and characteristic time scales, and investigated their potential correlation.
Eda Sonbaş +2 more
doaj +1 more source
Comparison of wavelet-MLP and wavelet-GMDH models in forecasting EC and SAR at Zayandeh-Rood River [PDF]
علوم محیطی, 2018 Introduction: Increasing water demand and water pollution due to the development of agricultural, urban and industrial activities have caused environmental problems all over the world.
Masoud Karbasi, Saedeh Dindar
doaj
Visual Attention-Based Image Watermarking
IEEE Access, 2016 Imperceptibility and robustness are two complementary but fundamental requirements of any watermarking algorithm. Low strength watermarking yields high imperceptibility but exhibits poor robustness.
Deepayan Bhowmik +2 more
doaj +1 more source
Applied MechanicsChatter is a complex dynamic instability in machining processes and presents nonlinear and nonstationary behavior. Detection of this phenomenon before a catastrophic failure occurs has great importance in the industry today.
Daniel Pérez-Canales +3 more
doaj +1 more source
A Model for Yellow Tea Polyphenols Content Estimation Based on Multi-Feature Fusion
IEEE Access, 2019 Polyphenols are one of the important ingredients determining the quality of tea, which play an important role in affecting tea quality standards and quality control. At present, NIR spectroscopy technology has been widely used in tea quality detection to
Baohua Yang +3 more
doaj +1 more source
MachinesWind power is increasingly seen as a global, sustainable, and eco-friendly energy option. However, one significant obstacle to further wind energy investment is the high failure rate of wind turbines.
Trong-Du Nguyen +3 more
doaj +1 more source