Results 21 to 30 of about 19,035 (302)

The 40-Hz auditory steady-state response enhanced by beta-band subharmonics

Frontiers in Neuroscience, 2023
The 40-Hz auditory steady-state response (ASSR) has received special attention as an index of gamma oscillations owing to its association with various neuropsychiatric disorders including schizophrenia.
Shunsuke Sugiyama, Tomoya Taniguchi, Tomoaki Kinukawa, Nobuyuki Takeuchi, Kazutaka Ohi, Toshiki Shioiri, Makoto Nishihara, Koji Inui, Koji Inui   +8 more
doaj   +1 more source

Characteristic Harmonic Spectrum Relocating for Controlling Specific Inter-Harmonics of Inverters With New Phase-Shifted Rotating PWM

IEEE Access, 2020
The problems of sub-synchronous oscillation and high-frequency oscillation related to inter-harmonics need to be solved in intermittent energy generation systems.
Jie Xie, Lei Xu, Hui Zhang, Yigang He, Ruaa M. Rashad Ghandour, Jintao Zhou, Yuanzhe Ge, Qizhen Li   +7 more
doaj   +1 more source

Responsibility Division for Harmonic Instability in the Multi-Paralleled Grid-Connected Inverters System Based on Impedance Analysis

IEEE Access, 2023
In the multi-paralleled grid-connected inverters system, harmonic oscillations may be deteriorated or even lead to system instability by the coupling between the inverters and the grid impedance.
Chengbi Zeng, Xuefeng Wu, Hong Miao, Haoxiang Duan   +3 more
doaj   +1 more source

Finite element reduced order models for nonlinear vibrations of piezoelectric layered beams with applications to NEMS [PDF]

, 2012
This article presents a finite element reduced order model for the nonlinear vibrations of piezoelectric layered beams with application to NEMS. In this model, the geometrical nonlinearities are taken into account through a von Kármán nonlinear strain ...
O. Thomas, LAZARUS, Arnaud, THOMAS, Olivier, A. Lazarus, J.-F. Deü, DEÜ, Jean-François   +5 more
core   +1 more source

Periodically Forced Nonlinear Oscillatory Acoustic Vacuum

Axioms, 2018
In this work, we study the in-plane oscillations of a finite lattice of particles coupled by linear springs under distributed harmonic excitation. Melnikov-type analysis is applied for the persistence of periodic oscillations of a reduced system.
Makrina Agaoglou, Michal Fečkan, Michal Pospíšil, Vassilis M. Rothos, Alexander F. Vakakis   +4 more
doaj   +1 more source

Nonlinear oscillators under delay control

Vietnam Journal of Mechanics, 2000
In this paper, oscillations and stability of nonlinear oscillators with time delay are studied by means of the asymptotic method of nonlinear mechanics.
Nguyen Van Dao
doaj   +1 more source

Aerodynamic Interference between Oscillating Lifting Surfaces and Fuselage. Part 3: Some Applications of Oscillating Lifting Surface Theory to the Flapping Wing [PDF]

INCAS Bulletin, 2014
The third article of this series continues to deal with the calculation of the aerodynamic unsteady forces on lifting surfaces. Here we present how the theory of oscillating wing in subsonic flow can be applied to the aerodynamic response to certain ...
Valentin Adrian Jean BUTOESCU
doaj   +1 more source

Square root of the harmonic oscillator [PDF]

Physical Review A, 1995
RevTex, 10 pages in preprint form, no ...
openaire   +3 more sources

Re-visiting the COVID-19 analysis using the class of high ordered integer-valued time series models with harmonic features

Healthcare Analytics, 2022
The COVID-19 series is obviously one of the most volatile time series with lots of spikes and oscillations. The conventional integer-valued auto-regressive time series models (INAR) may be limited to account for such features in COVID-19 series such as ...
Naushad Mamode Khan, Ashwinee Devi Soobhug, Noha Youssef, Swalay Fedally, Saralees Nadarajah, Zaid Heetun   +5 more
doaj   +1 more source

HORIZONS AND THE THERMAL HARMONIC OSCILLATOR [PDF]

Modern Physics Letters A, 2005
We show that two-dimensional anti-de Sitter spacetime (AdS2) can be put in correspondence, holographically, both with the harmonic oscillator and the free particle. When AdS2 has a horizon the corresponding mechanical system is a thermal harmonic oscillator at temperature given by the Hawking temperature of the horizon.
openaire   +4 more sources