Zobrazeno 1 - 10
of 305
pro vyhledávání: '"Bonnetier, A."'
We study composite assemblages of dielectrics and metamaterials with respectively positive and negative material parameters. In the continuum case, for a scalar equation, such media may exhibit so-called plasmonic resonances for certain values of the
Externí odkaz:
http://arxiv.org/abs/2407.06661
We investigate the radiating resonances for the Helmholtz equation in the two dimensional space in the presence of an unbounded waveguide with a high contrast index of refraction. Using a suitable asymptotic analysis of the Green's function of the pr
Externí odkaz:
http://arxiv.org/abs/2311.00132
The aim of this work is to present theoretical tools to study wave propagation in elastic waveguides and perform multi-frequency scattering inversion to reconstruct small shape defects in a 2D and 3D elastic plate. Given surface multi-frequency wavef
Externí odkaz:
http://arxiv.org/abs/2210.01899
In this work we investigate a 1D evolution equation involving a divergence form operator where the diffusion coefficient inside the divergence is changing sign, as in models for metamaterials.We focus on the construction of a fundamental solution for
Externí odkaz:
http://arxiv.org/abs/2206.03107
This article aims to present a general study of the Helmholtz problem in slowly varying waveguides. This work is of particular interest at locally resonant frequencies, where a phenomenon close to the tunnel effect for Schr\"odinger equation in quant
Externí odkaz:
http://arxiv.org/abs/2202.08179
Publikováno v:
Inverse Problems & Imaging, 2022, 16 (2) : 417-450
Localization and reconstruction of small defects in acoustic or electromagnetic waveguides is of crucial interest in nondestructive evaluation of structures. The aim of this work is to present a new multi-frequency inversion method to reconstruct sma
Externí odkaz:
http://arxiv.org/abs/2202.08168
This paper is devoted to the robust approximation with a variational phase field approach of multiphase mean curvature flows with possibly highly contrasted mobilities. The case of harmonically additive mobilities has been addressed recently using a
Externí odkaz:
http://arxiv.org/abs/2110.01340
Autor:
Sánchez-Vincitore, Laura V., Cubilla-Bonnetier, Daniel, Valdez, María Elena, Jiménez, Angie, Peterson, Paulette, Vargas, Karina, Castro, Arachu
Publikováno v:
In Infant Behavior and Development June 2024 75
In this article, we study the impact of a change in the type of boundary conditions of an elliptic boundary value problem. In the context of the conductivity equation we consider a reference problem with mixed homogeneous Dirichlet and Neumann bounda
Externí odkaz:
http://arxiv.org/abs/2106.07407
Autor:
Felipe Díaz, Daniel Cubilla-Bonnetier, Carlos B Ruiz-Matuk, Arachu Castro, María Elena Valdez, Angie Sabrina Jiménez, Laura V. Sánchez-Vincitore, María Angélica Alonso Pellerano
Publikováno v:
F1000Research, Vol 12 (2024)
Background The purpose of the study was to determine the psychometric properties of the Dominican System for Measuring Early Childhood Development (SIMEDID, for its Spanish acronym), to adjust the sequence of item presentation, and to provide age-sta
Externí odkaz:
https://doaj.org/article/cac7e745f2f04ea1b3a7ab90b4badfbb