Results 21 to 30 of about 90,794 (290)

The Time-Scale Interactions between Stock Price and Exchange Rate Volatility in Tehran Stock Exchange [PDF]

open access: yesراهبرد مدیریت مالی, 2018
The purpose of this study was to investigate the relationship between Tehran stock exchange price index and exchange rate changes using the time-scale approach.
ramin khochiany
doaj   +1 more source

Processing ambient noise using wavelet analysis tools: the Iraqi Seismological broadband Network Data at Iraqi Meteorological Organization and seismology (IMOS)

open access: yesKuwait Journal of Science, 2022
The main objective of this research is to reduce the expected error between the original signal polluted by the implicit and estimated noise. The dominance of some levels of the surrounding earthquakes in general on the seismic energy resulting from ...
Hasanain Jasim Mohammed, Ali M. Al-Rahim
doaj   +1 more source

Exploring relationship between crude oil price volatility and stock indices movement using wavelet analysis: evidence from India and China [PDF]

open access: yesVilakshan (XIMB Journal of Management), 2022
Purpose – This study aims to explore the linkage between fluctuations in the global crude oil price and equity market in fast emerging economies of India and China. Design/methodology/approach – The present research uses wavelet decomposition and maximal
Shekhar Mishra, Sathya Swaroop Debasish
doaj   +1 more source

JuWavelet – continuous wavelet transform and S transform for wave analysis [PDF]

open access: yesGeoscientific Model Development
This paper describes the Python package JuWavelet, which implements the continuous wavelet transform using the Morlet wavelet, which is a popular tool in the geosciences to analyse wave-like phenomena.
J. Ungermann, R. Reichert, R. Reichert
doaj   +1 more source

Design of Gm-C wavelet filter for on-line epileptic EEG detection [PDF]

open access: yes, 2019
Copyright © 2019 The Institute of Electronics, Information and Communication EngineersAnalog filter implementation of continuous wavelet transform is considered as a promising technique for on-line spike detection applied in wearable electroencephalogram
He, Yigang   +4 more
core   +2 more sources

A Novel Method to Estimate the Damage Severity Using Spatial Wavelets and Local Regularity Algorithm

open access: yesFracture and Structural Integrity, 2020
In the process of structural damage detection using continuous wavelet transform (CWT), the perturbation or damage is located by identifying the defects locally in the input signal data.
Arun Kumar K, Mallikarjuna Reddy D
doaj   +3 more sources

The De-Noising of Sonic Echo Test Data through Wavelet Transform Reconstruction

open access: yesShock and Vibration, 1999
This paper presents the results of feasibility study into the application of the wavelet transform signal processing method to sonic based non-destructive testing techniques.
J.N. Watson, P.S. Addison, A. Sibbald
doaj   +1 more source

State Identification of Transformer Under DC Bias Based on Wavelet Singular Entropy

open access: yesIEEE Access, 2021
To identify the DC bias state of transformers, a DC bias state identification method of transformer based on wavelet singular entropy is proposed in this paper. The vibration principle of transformers under DC bias has been analyzed.
Jun Liu   +7 more
doaj   +1 more source

An Algorithm for the Continuous Morlet Wavelet Transform

open access: yes, 2007
This article consists of a brief discussion of the energy density over time or frequency that is obtained with the wavelet transform. Also an efficient algorithm is suggested to calculate the continuous transform with the Morlet wavelet.
Caprioli   +22 more
core   +1 more source

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