Results 31 to 40 of about 4,499,288 (288)
Applied Sciences, 2019 Detecting pain based on analyzing electroencephalography (EEG) signals can enhance the ability of caregivers to characterize and manage clinical pain. However, the subjective nature of pain and the nonstationarity of EEG signals increase the difficulty ...
Rami Alazrai +3 more
doaj +1 more source
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
core +3 more sources
Optimising Time-Frequency Distributions: A Surface Metrology Approach
Sensors, 2023 Time-frequency signal processing offers a significant advantage over temporal or frequency-only methods, but representations require optimisation for a given signal. Standard practice includes choosing the appropriate time-frequency distribution and fine-
Damir Malnar, Miroslav Vrankic
doaj +1 more source
DOA Estimation and Self-Calibration under Unknown Mutual Coupling
Sensors, 2019 In practical applications, the assumption of omnidirectional elements is not effective in general, which leads to the direction-dependent mutual coupling (MC). Under this condition, the performance of traditional calibration algorithms suffers.
Dong Qi +4 more
doaj +1 more source
Estimating the flood frequency distribution at seasonal and annual time scales [PDF]
Hydrology and Earth System Sciences, 2012 We propose an original approach to infer the flood frequency distribution at seasonal and annual time scale. Our purpose is to estimate the peak flow that is expected for an assigned return period <i>T</i>, independently of the season in ...
E. Baratti +5 more
doaj +1 more source
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
core +3 more sources
Convolutional Neural Networks for Automatic Cognitive Radio Waveform Recognition
IEEE Access, 2017 Cognitive radio technology is an important branch in the field of wireless communication, and automatic identification is a major part of cognitive radio technology. Convolutional neural network (CNN) is an advanced neural network, which is the forefront
Ming Zhang, Ming Diao, Limin Guo
doaj +1 more source
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
core +3 more sources
Towards On-Chip Self-Referenced Frequency-Comb Sources Based on Semiconductor Mode-Locked Lasers. [PDF]
, 2019 Miniaturization of frequency-comb sources could open a host of potential applications in spectroscopy, biomedical monitoring, astronomy, microwave signal generation, and distribution of precise time or frequency across networks.
Bustos-Ramirez, Ricardo +6 more
core +2 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background An international Delphi panel of experts developed consensus statements to delineate the circumstances where the risks of dexamethasone as an antiemetic do and do not outweigh its benefits. Procedure Experts in supportive care of pediatric patients were invited to participate.
Negar Shavandi +20 more
wiley +1 more source