نتایج جستجو برای: wavelet coherence

تعداد نتایج: 109050  

Journal: :Regional Studies 2021

The study examines the relationship between immigration and regional housing markets using wavelet coherence analysis in conjunction with Granger causality tests. We find that while there are some differences relationships, impact of on house rents is consistently more pronounced than prices and, short to medium term, an increase leads a decrease price-to-rent ratios. uses data sets for differe...

Journal: :R Journal 2022

In this work we present the wavScalogram R package, which contains methods based on wavelet scalograms for time series analysis. These are related to two main tools: windowed scalogram difference and scale index. The compares series, identifying if their follow similar patterns at different scales times, it is thus a useful complement other comparison tools such as squared coherence. On hand, i...

Journal: :Finance Research Letters 2022

We examine the hedging properties of different asset classes as impacted by Russian invasion Ukraine in 2022. employ wavelet coherence analysis to study impact geopolitical risk on various types securities. found that exhibited unequal sensitivity both magnitude and timescale. Bonds stocks displayed strong for multi-week horizons, whereas currencies were affected at shorter periods. The green b...

Journal: :International Journal of Advanced Computer Science and Applications 2023

The synchronization of neural activity in the human brain has great significance for coordinating its various cognitive functions. It changes throughout time and response to frequency. is measured terms signals, like an electroencephalogram (EEG). time-frequency (TF) among several EEG channels this research using efficient approach. Most frequently, windowed Fourier transforms-short-time transf...

Journal: :Water 2023

This article solves the problem of detecting water leaks with a minimum size down to 1 mm in diameter. Two new mathematical tools are used solve this problem: first one is Te cross-spectral density and second coherence. These provide possibility discriminating spurious frequency components, making use property multi-sensitivity. advantage makes it possible maximize sensitivity spectrum. The wav...

Journal: :Neuroscience letters 2006
Olga A Imas Kristina M Ropella James D Wood Anthony G Hudetz

Consciousness presumes a set of integrated functions such as sensory processing, attention, and interpretation, and may depend upon both local and long-range phase synchronization of neuronal activity in cerebral cortex. Here we investigated whether volatile anesthetic isoflurane at concentrations that produce loss of consciousness (LOC) disrupts long-range anterio-posterior and local anterior ...

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