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New signal processing approach for structural health monitoring in noisy environments based on impedance measurements
(2019-04-01)
The electro-mechanical impedance (EMI) technique is one of the most promising structural health monitoring (SHM) approaches for material damage detection, which is based on impedance measurements of low-cost piezoelectric ...
Experimental analysis of all-optical 4-ASK signal generation through parametric amplification
(Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo, 2012)
All-optical spectral shuffling of signals traveling through different optical routes
(2019-07-01)
A recent proposed physical layer encryption technique uses an all-optical setup based on spatial light modulators to split two or more wavelength division multiplexed (WDM) signals in several spectral slices and to shuffle ...
Digital signal processing for self-vibration monitoring in grinding: A new approach based on the time-frequency analysis of vibration signals
(2019-10-01)
The occurrence of chatter can generate parts outside the dimensional and geometric tolerances or even cause irreversible damage, such as changes to the hardness and surface roughness of the ground part. The objective of ...
Mate searching in Ennya maculicornis (Membracidae: Polyglyptini) initiated by females: behavioural and acoustic descriptions
(Blackwell Publishing Ltd, 2019)
1. In treehoppers in which courtship has been studied, males initiate the search for females by periodically emitting a vibrational signal. The responses by the female are used by males as a beacon and give rise to a duet. ...
Spectral shuffling with phase encoding and dynamic keys applied to transparent optical network signals
(2020-07-01)
A recently proposed signal encryption technique consists in shuffling the samples of two or more baseband signals, which are then modulated in different optical carriers and transmitted by transparent optical networks. In ...
Spectral Shuffling with Phase Encoding and Dynamic Keys Applied to Transparent Optical Network Signals
(Ieee, 2020-01-01)
A recently proposed signal encryption technique consists in shuffling the samples of two or more baseband signals, which are then modulated in different optical carriers and transmitted by transparent optical networks. In ...
Wnt signaling modulates pre- and postsynaptic maturation: therapeutic considerations
(2010)
Wnt signaling regulates a wealth of aspects of nervous system development and function in embryonic stages and in adulthood. The expression of Wnt ligands and components of the Wnt signaling machinery in early stages of ...