Results 11 to 20 of about 606,123 (288)
Identification of Physical Parameters of a Porous Material Located in a Duct by Inverse Methods
Archives of Acoustics, 2021 Lined ducts with porous materials are found in many industrial applications. To understand and simulate the acoustic behaviour of these kinds of materials, their intrinsic physical parameters must be identified.
Marwa KANI +4 more
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Mechanical Engineering Journal, 2020 This paper presents a numerical method for analyzing elastic wave scattering by multi-layered periodic structures in two dimensions. The proposed method is based on the boundary element method (BEM) and scattering matrix representing a relationship ...
Kei MATSUSHIMA +3 more
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Scattering asymmetry and circular dichroism in coupled PT-symmetric chiral nanoparticles
Nanophotonics, 2022 We investigate the scattering properties of coupled parity-time (PT) symmetric chiral nanospheres with scattering matrix formalism. The exceptional points, i.e., spectral singularities at which the eigenvalues and eigenvectors simultaneously coalesce in ...
Chen Xiaolin +4 more
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On the imaginary part of coupling resonance points [PDF]
Opuscula Mathematica, 2019 We prove for rank one perturbations that the imaginary part of a coupling resonance point is inversely proportional by a factor of \(-2\) to the rate of change of the scattering phase, as a function of the coupling variable, evaluated at the real part of
Nurulla Azamov, Tom Daniels
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Singularities of Scattering Matrices
Universe, 2023 Our main result is the analysis of singularities of the integrands of integrals representing the matrix elements of the scattering matrix and the inclusive scattering matrix in perturbation theory. These results are proven for any quantum field theory in
Albert Schwarz
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Inverse design of EBG waveguides through scattering matrices
EPJ Applied Metamaterials, 2020 Inverse design procedures aim at determining optimal parameters for a given device in order to satisfy assigned specifications. In this contribution, the design of optimal EBG waveguides through inverse problems tools is addressed.
Palmeri Roberta, Isernia Tommaso
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A Fast Scattering Model for C-Band Data Simulation in Forest Scenarios
IEEE Access, 2022 Synthetic aperture radar (SAR) data simulation of forest canopies is a common method used to study the interaction between radar and forests. The forest canopy contains a large number of small leaves, which require many computing resources to calculate ...
Qiang Gao
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Scattering of Giant Magnons in CP^3 [PDF]
, 2010 We study classical scattering phase of CP^2 dyonic giant magnons in R_t x CP^3. We construct two-soliton solutions explicitly by the dressing method. Using these solutions, we compute the classical time delays for the scattering of giant magnons, and ...
A Hegedus +74 more
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D=11 SUGRA as the Low Energy Effective Action of Matrix Theory: Three Form Scattering [PDF]
, 1998 We employ the LSZ reduction formula for Matrix Theory introduced in our earlier work to compute the t-pole S-matrix for three form-three form scattering. The result agrees completely with tree level D=11 SUGRA.
Plefka, Jan +2 more
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Improved van Zyl Polarimetric Decomposition Lessening the Overestimation of Volume Scattering Power
Remote Sensing, 2014 This paper improves van Zyl’s Nonnegative Eigenvalue Decomposition (NNED). Orientation angle compensation and helix scattering are introduced to the decomposition. The volume scattering parameters that explain the most cross-polarized power are selected.
Xiaoguang Cheng +2 more
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