Articles with "random media" as a keyword



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Neutron transport in anisotropic random media

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Published in 2018 at "Annals of Nuclear Energy"

DOI: 10.1016/j.anucene.2018.04.031

Abstract: Abstract Assessing the impact of random media for eigenvalue problems plays a central role in nuclear reactor physics and criticality safety. In a recent work (Larmier et al., 2018a), we have applied a probabilistic model… read more here.

Keywords: anisotropic random; fuel; transport anisotropic; random media ... See more keywords
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Non-universality of the dynamic exponent in two-dimensional random media

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Published in 2019 at "Scientific Reports"

DOI: 10.1038/s41598-018-36236-z

Abstract: The diffusion of solutes in two-dimensional random media is important in diverse physical situations including the dynamics of proteins in crowded cell membranes and the adsorption on nano-structured substrates. It has generally been thought that… read more here.

Keywords: dimensional random; diffusion; non universality; dynamic exponent ... See more keywords
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Pinning and depinning: From periodic to chaotic and random media.

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Published in 2019 at "Chaos"

DOI: 10.1063/1.5056190

Abstract: We study the propagation of dissipative structures in inhomogeneous media with a focus on pinning and depinning transitions. We model spatial complexity in the medium as generated by dynamical systems. We are thus able to… read more here.

Keywords: periodic chaotic; chaotic random; pinning depinning; random media ... See more keywords
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Accurate remote sensing of conducting objects in random media with plane H-wave polarization

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Published in 2019 at "Journal of Electromagnetic Waves and Applications"

DOI: 10.1080/09205071.2019.1583609

Abstract: Abstract In this work, a mechanism is proposed to enhance the remote sensing accuracy of conducting objects located within continuous random media. Through our mechanism, operating frequency would be selected properly for preciously radar detection.… read more here.

Keywords: polarization; remote sensing; sensing conducting; accurate remote ... See more keywords
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Synthesis of a scalar wavelet intensity propagating through von Kármán-type random media: joint use of the radiative transfer equation with the Born approximation and the Markov approximation

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Published in 2017 at "Geophysical Journal International"

DOI: 10.1093/gji/ggx318

Abstract: S U M M A R Y In high-frequency seismograms of small earthquakes, we clearly see the excitation of long lasting coda waves and the envelope broadening of an S-wavelet with travel distance increasing. We… read more here.

Keywords: approximation; intensity; intensity time; wavelet ... See more keywords
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Entanglement dynamics in random media

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Published in 2017 at "Physical Review A"

DOI: 10.1103/physreva.96.062119

Abstract: We study how the entanglement dynamics between two-level atoms is impacted by random fluctuations of the light cone. In our model the two-atom system is envisaged as an open system coupled with an electromagnetic field… read more here.

Keywords: random media; dynamics random; system; entanglement dynamics ... See more keywords
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Relative efficiency of three mechanisms of vector field growth in a random media.

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Published in 2023 at "Physical review. E"

DOI: 10.1103/physreve.107.044110

Abstract: We consider a model of a random media with fixed and finite memory time with abrupt losses of memory (renovation model). Within the memory intervals we can observe either amplification or oscillation of the vector… read more here.

Keywords: vector field; three mechanisms; growth; mean field ... See more keywords
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Reference-free path length interferometry of random media with the intensity moments analysis.

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Published in 2017 at "Optics express"

DOI: 10.1364/oe.25.013953

Abstract: Stochastic interference of partially coherent light multiple scattered by a random medium is considered. The relationship between the second- and third-order moments of intensity fluctuations in random interference patterns, the coherence function of probe radiation,… read more here.

Keywords: analysis; intensity; path; reference free ... See more keywords
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Random medium model for producing optical coherence lattice.

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Published in 2017 at "Optics express"

DOI: 10.1364/oe.25.025222

Abstract: Within the Markov approximation, we introduce a novel class of random media which can produce a scattered field with optical lattice patterns. It is shown that the array dimension, lobes intensity profile, and the periodicity… read more here.

Keywords: random medium; medium model; random; random media ... See more keywords
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A TOTAL QUALITY ASSESSMENT SOLUTION FOR SYNTHETIC APERTURE RADAR NLFM WAVEFORM GENERATION AND EVALUATION IN A COMPLEX RANDOM MEDIA

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Published in 2017 at "International Journal on Smart Sensing and Intelligent Systems"

DOI: 10.21307/ijssis-2017-208

Abstract: A Design, simulation and optimal selection of non-linear frequency modulation waveforms (NLFM) based on correlated ambiguity function (AF) quality analysis for the purpose of Synthetic Aperture Radar (SAR) is done in this article. The selected… read more here.

Keywords: quality; aperture radar; complex random; random media ... See more keywords