Results 31 to 40 of about 1,885,669 (194)

Physics-Based Coherent Modeling of Long-Range Millimeter-Wave Propagation and Scattering in Rain

open access: yesIEEE Open Journal of Antennas and Propagation, 2023
Precipitation and in particular rain present a random medium with constituent particles having dimensions comparable to the wavelength at millimeter-wave frequencies.
Behzad Yektakhah, Kamal Sarabandi
doaj   +1 more source

Synthesis, Characterization, and Second Harmonic Generation of Multiferroic Iron‐Doped Lithium Niobate Powders

open access: yesAdvanced Electronic Materials, 2023
Random granular media can exhibit characteristics that are often related to ordered media. In the present work, this feature is observed in the polarized Second Harmonic Generation (SHG) response from reduced iron‐doped lithium niobate (LN:Fe) powders ...
Mónica J. García‐Rodríguez   +8 more
doaj   +1 more source

Interface Motion in Random Media [PDF]

open access: yesCommunications in Mathematical Physics, 2014
22 pages, 5 ...
Bodineau, T., Teixeira, A.
openaire   +3 more sources

Average Intensity of Low-Frequency Sound and Its Fluctuations in a Shallow Sea with a Range-Dependent Random Impedance of the Liquid Bottom

open access: yesApplied Sciences, 2021
In this study, the problem of the influence of a horizontally inhomogeneous liquid bottom impedance, given by random Gaussian function of the speed of sound and by density, on the propagation of low-frequency sound in a shallow-water waveguide is ...
Fengqin Zhu   +2 more
doaj   +1 more source

Dynamics of linear polymers in random media [PDF]

open access: yes, 2001
We study phenomenological scaling theories of the polymer dynamics in random media, employing the existing scaling theories of polymer chains and the percolation statistics.
Amit Dutta   +23 more
core   +2 more sources

Acoustic Wave Correlation Tomography of Time-Varying Disordered Structures

open access: yesArchives of Acoustics, 2018
An original model based on first principles is constructed for the temporal correlation of acoustic waves propagating in random scattering media. The model describes the dynamics of wave fields in a previously unexplored, moderately strong (mesoscopic ...
Gregory SAMELSOHN, Saad TAPUCHI
doaj   +1 more source

Neutral kaons in random media [PDF]

open access: yesPhysical Review D, 2003
The generalized dynamics describing the propagation of neutral kaons in randomly fluctuating media is derived and analyzed. It takes into account possible matter-induced effects leading to loss of phase coherence and dissipation. The study of selected neutral kaon observables indicates that these non-standard effects are amenable to a direct ...
BENATTI, FABIO, FLOREANINI R., ROMANO R.
openaire   +3 more sources

Bosonic excitations in random media [PDF]

open access: yesPhysical Review B, 2003
We consider classical normal modes and non-interacting bosonic excitations in disordered systems. We emphasise generic aspects of such problems and parallels with disordered, non-interacting systems of fermions, and discuss in particular the relevance for bosonic excitations of symmetry classes known in the fermionic context.
Gurarie, V, Chalker, J
openaire   +3 more sources

3D MORPHOLOGICAL MODELLING OF A RANDOM FIBROUS NETWORK

open access: yesImage Analysis and Stereology, 2011
In the framework of the Silent Wall ANR project, the CMM and the US2B are associated in order to characterize and to model fibrous media studying 3D images acquired with an X-Ray tomograph used by the US2B.
Charles Peyrega   +3 more
doaj   +1 more source

Using Random Scrambling in Multi Media Encoding [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2013
The research deals with implementation of a new algorithm to encrypt multimedia  files this method called random scrambling, to increase the security of the transmitted files, a secret key is used to prevent unauthorized persons from extracting these ...
Ghada Tahir Qasim
doaj   +1 more source

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