Geometrical Theory Of Diffraction
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Thermoanalytical, Spectroscopic and DFT Studies of Heavy Trivalent Lanthanides and Yttrium(III) with Oxamate as Ligand
Solid-state LnL3∙nH2O complexes, where Ln stands for trivalent lanthanides (Tb to Lu) or yttrium(III) and L is oxamate (NH2COCO2-), have been synthesized. The characterization of the complexes was performed by using elemental analysis (EA), complexometric titration with EDTA, thermoanalytical techniques such as simultaneous thermogravimetry and differentia
Mat. Res.. Publicado em: 22/06/2017
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2. Força optica em pinças opticas : estudo teorico e experimental / Optical force in optical tweezers : theory and experiment
The optical tweezers is an instrument capable of manipulating and trapping dielectric particles through the radiation pressure. Their applications in the life sciences and biophysics increased exponentially after it has been demonstrated that it allowed to microorganisms to be maintained alive trapped for long times. Information obtained from these experimen
Publicado em: 2006
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3. Modelo 2,5D de predição de propagação para ambientes interiores utilizando o método do traçado de raios
A 2.5D ray-tracing propagation model is proposed to predict radio loss in indoor environment. Specifically, we opted for the Shooting and Bouncing Rays (SBR) method, together with the Geometrieal Theory of Diffrartion (GTD). Besides the line-of-sight propagation (LOS), we consider that the radio waves may experience reflection, refraction, and diffraction (N
Publicado em: 2005
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4. TÉCNICAS DE TRAÇADO DE RAIOS EM TRÊS DIMENSÕES PARA CÁLCULO DE CAMPOS EM AMBIENTES INTERIORES E EXTERIORES / 3-D RAY TRACING TECHNIQUES FOR INDOOR AND OUTDOOR FIELD CALCULATIONS / TÉCNICAS DE TRAZADO DE RAYOS EN TRES DIMENSIONES PARA CÁLCULO DE CAMPOS EN AMBIENTES INTERIORES Y EXTERIORES
O problema do cálculo de cobertura em sistemas celulares operando em regiões urbanizadas tem sido bastante estudado por diversos autores, existindo um conjunto de métodos de previsão amplamente testados e implementados em ferramentas computacionais. Atualmente, com a aplicação da tecnologia celular a sistemas de transmissão de dados de faixa larga, o
Publicado em: 2000