Results 21 to 30 of about 4,499,306 (241)
Advanced Composites Letters, 2020 The physical meaning of phase difference controls the occurrence time of peak values of triangular series, which can be abbreviated as peak arrival time.
Xu Han, Yunan Liu, Lihua Wang
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Time-frequency represetation of radar signals using Doppler-Lag block searching Wigner-Ville distribution [PDF]
, 2018 Radar signals are time-varying signals where the signal parameters change over time. For these signals, Quadratic Time-Frequency Distribution (QTFD) offers advantages over classical spectrum estimation in terms of frequency and time resolution but it ...
Hamdi, Muhammad Noor Muhammad +1 more
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Classification of EEG Signals Using Adaptive Time-Frequency Distributions
Metrology and Measurement Systems, 2016 Time-Frequency (t-f) distributions are frequently employed for analysis of new-born EEG signals because of their non-stationary characteristics. Most of the existing time-frequency distributions fail to concentrate energy for a multicomponent signal ...
Khan Nabeel A., Ali Sadiq
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Real-time updating of the flood frequency distribution through data assimilation [PDF]
Hydrology and Earth System Sciences, 2017 We explore the memory properties of catchments for predicting the likelihood of floods based on observations of average flows in pre-flood seasons.
C. Aguilar, A. Montanari, M.-J. Polo
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EURASIP Journal on Wireless Communications and Networking, 2019 In the radar array signal processing direction of arrival (DOA), the estimation of weak non-stationary signal is an important and difficult problem when both strong and weak signals are coexisting particularly because the weak non-stationary signals are ...
Shuai Shao +5 more
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Interevent-time distribution and aftershock frequency in non-stationary induced seismicity
Scientific Reports, 2021 The initial footprint of an earthquake can be extended considerably by triggering of clustered aftershocks. Such earthquake–earthquake interactions have been studied extensively for data-rich, stationary natural seismicity.
Richard A. J. Post +7 more
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Frequency dispersion of photon-assisted shot noise in mesoscopic conductors
, 2006 We calculate the low-frequency current noise for AC biased mesoscopic chaotic cavities and diffusive wires. Contrary to what happens for the admittance, the frequency dispersion is not dominated by the electric response time (the "RC" time of the circuit)
A. Kamenev +4 more
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MathematicsModal parameters are inherent characteristics of civil structures. Due to the effect of environmental factors and ambient loads, the physical and modal characteristics of a structure tend to change over time.
Xiao-Jun Yao +4 more
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Deep Neural Networks for Estimating Regularization Parameter in Sparse Time–Frequency Reconstruction
TechnologiesTime–frequency distributions (TFDs) are crucial for analyzing non-stationary signals. Compressive sensing (CS) in the ambiguity domain offers an approach for TFD reconstruction with high performance, but selecting the optimal regularization parameter for
Vedran Jurdana
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Capturing the zero: a new class of zero-augmented distributions and multiplicative error processes [PDF]
, 2010 We propose a novel approach to model serially dependent positive-valued variables which realize a non-trivial proportion of zero outcomes. This is a typical phenomenon in financial time series observed on high frequencies, such as cumulated trading ...
Hautsch, Nikolaus +2 more
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