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Improving the shape of the cross-correlation function for leak detection in a plastic water distribution pipe using acoustic signals
(2017-12-01)
This paper is concerned with time delay estimation for the detection of leaks in buried plastic water pipes using the cross-correlation of leak noise signals. In some circumstances the bandwidth of over which the signal ...
Evolution of multifractal cross-correlations between the Argentina MERVAL Index and international commodities prices
(Routledge Journals, Taylor & Francis Ltd, 2016-10)
We compute the auto-correlations and cross-correlations of the volatility time series of the Argentina MERVAL Index (the Buenos Aires Stock Exchange main index) and three agricultural commodities, in a multifractal context ...
Amplitude distortion of measured leak noise signals caused by instrumentation: Effects on leak detection in water pipes using the cross-correlation method
(2019-11-24)
A common way to detect and locate leaks in buried water pipes is to use leak noise correlators. Vibration or acoustic signals are measured on or in the pipe using sensors placed either side of the leak, and the difference ...
Exact crossing rates of dual diversity over unbalanced correlated Rayleigh channels
(Ieee-inst Electrical Electronics Engineers IncPiscatawayEUA, 2006)
The effects of resonances on time delay estimation for water leak detection in plastic pipes
(2018-04-28)
In the use of acoustic correlation methods for water leak detection, sensors are placed at pipe access points either side of a suspected leak, and the peak in the cross-correlation function of the measured signals gives ...
Analysis of the nonlinear relationship between commodity prices in the last two decades
(Springer, 2014-10)
We propose the construction of a network to study the correlation among price indices of different commodities, by using the Multifractal Cross-Correlation method proposed by Podobnik and Stanley. This estimator, based on ...
Characterization of the Genetic Variability of a Sugarcane Commercial Cross Through Yield Components and Quality Parameters
(2012-06-01)
The phenotypic characterization as well as the knowledge of the correlation among traits, is the first step to quantify the potential of a cross for further QTL (quantitative trait loci) detection. The present work aimed ...
Correlations between total cross sections and slopes
(Sociedade Brasileira de Física, 2004)