Cable System Management requires an assessment of the health of the cable systems. It is increasingly common for the assessment of aged cable systems to be made through the application of diagnostics measurements. Papers and standards have established benchmarks for diagnostic measurements that help utility engineers to reach a condition assessment. Generally, extremes of healthy and non-health...

Power spectral density is an accepted measure of heart rate variability. Two estimators of multifractal properties: Wavelet Transform Modulus Maxima and Multifractal Detrended Fluctuation Analysis are used to investigate multifractal properties for the three strongly physiologically grounded components of power spectra: low frequency (LF), very low frequency (VLF) and ultra low frequency (ULV)....

Abstract. We report on the variation of electric power density linked to very low frequency (VLF) signal observed during minimum solar cycle 25. The detected VLF is emitted by NWC radio station localized in southern hemisphere, at 21.5∘ S and 114.2∘ E. attempt this work quantify beam as Electric Field Detector (EFD) instrument onboard CSES satellite. Geometrical key parameters have been conside...

In this article, a new variable leakage flux reverse salient-pole motor (VLF-RSPM) is raised to widen the speed range. The innovation realize both characteristics and by using method of adding magnetic bridges barriers. Firstly, evolution topological structure working principle are introduced. Secondly, based on 2D Finite Element Analysis (FEA), electromagnetic properties noise analyzed in deta...

Two mathematical methods, the Fourier and wavelet transforms, were used to study the short term cardiovascular control system. Time series, picked from electrocardiogram and arterial blood pressure lasting 6 minutes, were analyzed Part of the results were reported at the 53rd Autumn Meeting of Italian Society of Physiology, 16-19 September, 2002, Ferrara, Italy. A short abstract was published i...

BACKGROUND Several reports have described that individual periodic leg movements during sleep (PLMS) activities are associated with autonomic nervous system activity occurring shortly before each PLMS activity. Nevertheless, no study has investigated dynamic changes of autonomic nervous system activity before the onset of PLMS. This study detected changes in heart rate variability (HRV) at the ...

Previous work from our laboratory has demonstrated that the very low-frequency (VLF: 0-0.25 Hz) and low-frequency (LF: 0.25-0.8 Hz) power of arterial pressure variability (APV) are related to vasomotor reactivity in response to control signals from the rostral ventrolateral medulla (RVLM) via the sympathetic system in the rat. The present study evaluated the differences in the dynamic property ...