Results 41 to 50 of about 1,008,820 (154)

Stochastic analysis of frequency-domain adaptive filters

open access: yesEURASIP Journal on Advances in Signal Processing
This study investigates the convergence behaviors of a family of frequency-domain adaptive filters (FDAFs) under both exact- and under-modeling situations.
Feiran Yang
doaj   +1 more source

Time to Frequency Domain Analysis of Narrow Band Antennas

open access: yesInternational Journal of Antennas and Propagation, 2017
This paper presents system modeling of three different single band antennas using the singularity expansion method (SEM). To acquire the accurate physical complex poles and the corresponding residues of the narrow band antenna model, an enhanced Matrix ...
Sajjad Ur Rehman, Majeed A. S. Alkanhal
doaj   +1 more source

Unraveling cardiac arrhythmia frequency: comparative analysis using time and frequency domain algorithms

open access: yesFrontiers in Signal Processing
During cardiac arrhythmia, the heart frequency is an important physiological parameter that can be identified by analyzing electrocardiogram (ECG) signals.
Laura Diaz-Maue   +6 more
doaj   +1 more source

Analysis of Cavitation-induced Vibration Characteristics of a Vortex Pump Based on Adaptive Optimal Kernel Time-frequency Representation [PDF]

open access: yesJournal of Applied Fluid Mechanics
Cavitation-induced vibration presents a significant challenge in vortex pumps, leading to potential damage to hydraulic components and adverse effects on pump performance. This study aims to investigate the long-term implications of such phenomena.
Y. Wang   +4 more
doaj   +1 more source

Fast mode selection of intra prediction algorithm based on spatial and frequency analysis

open access: yesTongxin xuebao, 2012
By using of the features of DCT coefficients in frequency domain and the correlation of the predictive mode in spatial domain,the proposed algorithm evaluated the complexity of encoding block and selected encoding block size firstly,computed the texture ...
Shu-bo ZHAN   +3 more
doaj   +2 more sources

Analysis of the impact of leaks and valve maneuvers on pressure transient data in water distribution networks [PDF]

open access: yesRBRH
Swift detection and repair of leaks in water distribution networks are essential to ensure the operational efficiency of the system. It’s not viable, both financially and technically, to scour the entire extension of the system to look for leaks ...
Matheus Sant’Anna   +4 more
doaj   +1 more source

Reverse engineering of bacterial chemotaxis pathway via frequency domain analysis. [PDF]

open access: yesPLoS ONE, 2010
Chemotaxis is defined as a behavior involving organisms sensing attractants or repellents and leading towards or away from them. Therefore, it is possible to reengineer chemotaxis network to control the movement of bacteria to our advantage ...
Junjie Luo   +3 more
doaj   +1 more source

Comparative Studies between Frequency Domain Analysis and Time Domain Analysis on Free-Field One-Dimensional Shear Wave Propagation

open access: yesApplied Mechanics
In Korea, the underground silo structure for low- and intermediate-level radioactive waste disposal facilities has been constructed and operated since 2014.
Sun-Hoon Kim, Kwang-Jin Kim
doaj   +1 more source

Design and System Characterization of Ultra-Wideband Antennas With Multiple Band-Rejection

open access: yesIEEE Access, 2017
This paper presents system modelling and characterization of multiple-band notched ultrawideband (UWB) antennas using the singularity expansion method (SEM).
Sajjad ur Rehman, Majeed A. S. Alkanhal
doaj   +1 more source

Analysis of Hand Tremor in Parkinson’s Disease: Frequency Domain Approach

open access: yesFrontiers in Biomedical Technologies, 2020
Purpose: Parkinson's Disease (PD) is a neuro-degenerative interminable issue causing dynamic loss of dopamine-creating synapses, which is one of the most far reaching ailments after Alzheimer's infection. In this paper, a system for the classification of
Elham Samadi   +2 more
doaj   +1 more source

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