Buscar
Mostrando ítems 1-10 de 87
Phase-only optical encryption based on the zeroth-order phase-contrast technique
(SPIE-SOC PHOTOPTICAL INSTRUMENTATION ENGINEERS, 2009)
A phase-only encryption/decryption scheme with the readout based on the zeroth-order phase-contrast technique (ZOPCT), without the use of a phase-changing plate on the Fourier plane of an optical system based on the 4f ...
Interior regularity results for zeroth order operators approaching the fractional Laplacian
(Springer New York LLC, 2018)
In this article we are interested in interior regularity results for the solution μ∈∈ C(Ω¯) of the Dirichlet problem {μ=0inΩc,I∈(μ)=f∈inΩ where Ω is a bounded, open set and f∈∈ C(Ω¯) for all є ∈ (0, 1). For some σ ∈ (0, ...
Propagator matrices as matrices of power series. I: Its zeroth order and the Pople Santry model
(Elsevier Science, 2002-01)
The implementation and calculation of the principal propagator matrix elements as a power's series are presented. The scheme is applied to singlet- and triplet-type properties at random phase approach (RPA) level of ...
Band-edge states of the zero(th)-order gap in quasi-periodic photonic superlattices
(Spie - Int Soc Optical Engineering, 2008-01-01)
The photonic modes of Thue-Morse and Fibonacci lattices with generating layers A and B, of positive and negative indices of refraction, are calculated by the transfer-matrix technique. For Thue-Morse lattices, as well for ...
Band-edge states of the zero(th)-order gap in quasi-periodic photonic superlattices
(Spie - Int Soc Optical Engineering, 2008-01-01)
The photonic modes of Thue-Morse and Fibonacci lattices with generating layers A and B, of positive and negative indices of refraction, are calculated by the transfer-matrix technique. For Thue-Morse lattices, as well for ...
Continuous solutions and approximating scheme for fractional Dirichlet problems on Lipschitz domains
(Cambridge University Press, 2019)
In this paper, we study the fractional Dirichlet problem with the homogeneous exterior data posed on a bounded domain with Lipschitz continuous boundary. Under an extra assumption on the domain, slightly weaker than the ...
Determinação de características de desempenho de mancais radiais elípticos utilizando o método de elementos finitos
(Universidade Federal de Minas GeraisUFMG, 2007-11-30)
This work presents the determination of the performance characteristics of hydrodynamic oil lubricated journal bearings of fixed geometry, with elliptical profile using the finite element method. A finite element procedure ...
On the photonic dispersion of periodic superlattices made of left-handed materials
(2010-02-12)
Studies of the band gap properties of one-dimensional superlattices with alternate layers of air and left-handed materials are carried out within the framework of Maxwell's equations. By left-handed material, we mean a ...
On the photonic dispersion of periodic superlattices made of left-handed materials
(2010-02-12)
Studies of the band gap properties of one-dimensional superlattices with alternate layers of air and left-handed materials are carried out within the framework of Maxwell's equations. By left-handed material, we mean a ...