Results 21 to 30 of about 805,333 (299)

Mixing and transient combustion processes of scramjet combustor with transverse injector and hypermixer

open access: yesCase Studies in Thermal Engineering, 2021
The supersonic mixing between the reactive injection with an airstream is an essential issue that determines the scramjet engine performance. The mixing and transient combustion processes under different equivalence ratios for both the transverse ...
Wubingyi Shen   +3 more
doaj   +1 more source

A Novel Source Number Enumeration Approach Based on Ensemble Learning and SEEMD

open access: yesIEEE Access
Empirical Mode Decomposition (EMD) is a widely adopted adaptive signal analysis method, particularly effective for source number estimation in non-stationary environments. It decomposes complex signals into a series of Intrinsic Mode Functions (IMFs) and
Zhu Cairong, Ge Shengguo, Xu Yihan
doaj   +1 more source

An Improved Signal Processing Approach Based on Analysis Mode Decomposition and Empirical Mode Decomposition

open access: yesEnergies, 2019
Empirical mode decomposition (EMD) is a widely used adaptive signal processing method, which has shown some shortcomings in engineering practice, such as sifting stop criteria of intrinsic mode function (IMF), mode mixing and end effect.
Zhongzhe Chen   +3 more
doaj   +1 more source

Modulation of Astrocytes on Mode Selection of Neuron Firing Driven by Electromagnetic Induction

open access: yesNeural Plasticity, 2020
Both of astrocytes and electromagnetic induction are magnificent to modulate neuron firing by introducing feedback currents to membrane potential.
Zhongquan Gao   +3 more
doaj   +1 more source

Mode Mixing and Rotational Splittings. II. Reconciling Different Approaches to Mode Coupling

open access: yesThe Astrophysical Journal, 2023
In the mixed-mode asteroseismology of subgiants and red giants, the coupling between the p- and g- mode cavities must be understood well in order to derive localized estimates of interior rotation from measurements of mode multiplet rotational splittings.
J. M. Joel Ong, Charlotte Gehan
doaj   +1 more source

Self-Mixing Signal Characteristics of Complex-Coupled Distributed-Feedback Terahertz Quantum-Cascade Lasers

open access: yesFrontiers in Physics, 2021
Self-mixing interference (SMI) in terahertz quantum cascade lasers (THz QCLs) is one of the significant approaches for coherent THz imaging and sensing techniques.
Lei Ge   +8 more
doaj   +1 more source

Squeezed Light and Entangled Images from Four-Wave-Mixing in Hot Rubidium Vapor

open access: yes, 2008
Entangled multi-spatial-mode fields have interesting applications in quantum information, such as parallel quantum information protocols, quantum computing, and quantum imaging.
Boyer, Vincent   +3 more
core   +1 more source

Daily lake-level time series spectral analysis using EMD, VMD, EWT, and EFD

open access: yesJournal of Water and Climate Change
This study investigates the dynamics of daily Urmia Lake level (ULL) changes using spectral analysis tools to discover fluctuating patterns in the ULL series.
Farhad Alizadeh, Kiyoumars Roushangar
doaj   +1 more source

A Revised Hilbert–Huang Transform and Its Application to Fault Diagnosis in a Rotor System

open access: yesSensors, 2018
As a classical method to deal with nonlinear and nonstationary signals, the Hilbert–Huang transform (HHT) is widely used in various fields. In order to overcome the drawbacks of the Hilbert–Huang transform (such as end effects and mode mixing) during the
Hongjun Wang, Yongjian Ji
doaj   +1 more source

Tensor B mode and stochastic Faraday mixing

open access: yes, 2014
This paper investigates the Faraday effect as a different source of B mode polarization. The E mode polarization is Faraday rotated provided a stochastic large-scale magnetic field is present prior to photon decoupling.
Giovannini, Massimo
core   +1 more source

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