Results 31 to 40 of about 810,769 (296)

Amplified reflection, phase conjugation, and oscillation in degenerate four-wave mixing [PDF]

open access: yes, 1977
A number of new optical effects that result from degenerate four-wave mixing in transparent optical media are proposed and analyzed. The applications are relevant to time-reversed (phase-conjugated) propagation as well as to a new mode of parametric ...
Pepper, David M., Yariv, Amnon
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

Entanglement generation in relativistic cavity motion

open access: yes, 2013
We analyse particle creation and mode mixing for a quantum field in an accelerated cavity, assuming small accelerations but allowing arbitrary velocities, travel times and travel distances, and in particular including the regime of relativistic ...
Bruschi, David Edward   +2 more
core   +1 more source

Mixing-induced global modes in open active flow [PDF]

open access: yes, 2007
We describe how a convectively unstable active field in an open flow configuration becomes absolutely unstable due to local mixing. A representation of the mixing region as those with locally enhanced effective diffusion allows us to find the linear ...
Pikovsky, Arkady, Straube, Arthur V.
core   +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

Mixed-Mode Pandemic Modeling [PDF]

open access: yes2019 Winter Simulation Conference (WSC), 2019
This paper describes a mixed mode approach to simulating a global pandemic. It describes the architectural and design decisions as well as the data sources, development tools and processes in each of the three simulation domains - System Dynamics (SD), Discrete Event Simulation (DES) and Agent-Based Modeling (ABM). The encompassing model uses a network
openaire   +1 more source

3He-Driven Mixing in Low-Mass Red Giants: Convective Instability in Radiative and Adiabatic Limits

open access: yes, 2008
We examine the stability and observational consequences of mixing induced by 3He burning in the envelopes of first ascent red giants. We demonstrate that there are two unstable modes: a rapid, nearly adiabatic mode that we cannot identify with an ...
Chaboyer B.   +14 more
core   +1 more source

Frequency mixing in a ferrimagnetic sphere resonator

open access: yes, 2020
Frequency mixing in ferrimagnetic resonators based on yttrium and calcium vanadium iron garnets (YIG and CVBIG) is employed for studying their nonlinear interactions. The ferrimagnetic Kittel mode is driven by applying a pump tone at a frequency close to
Buks, Eyal   +4 more
core   +1 more source

Quantum spin mixing in a binary mixture of spin-1 atomic condensates

open access: yes, 2012
We study quantum spin mixing in a binary mixture of spin-1 condensates including coherent interspecies mixing process, using the familiar spinor condensates of $^{87}$Rb and $^{23}$Na atoms in the ground lower hyperfine F=1 manifolds as prototype ...
Wang, D. J., Xu, Z. F., You, L.
core   +1 more source

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