Tdfa
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. The influence of age and educational status on the performance of a cognitive-motor task and on its learning / A influência da idade e da escolaridade na execução e no aprendizado de uma tarefa cognitivo-motora
Função executiva é a habilidade necessária para planejar, iniciar, realizar e monitorar comportamentos intencionais, relacionados a um objetivo ou a demandas ambientais, com base na experiência prévia. Tanto indivíduos idosos, quanto indivíduos com escolaridade baixa apresentam dificuldade em tarefas que requerem função executiva, como o Trail Maki
Publicado em: 2010
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2. Amplificadores Ãpticos, estudos de polarizaÃÃo e geraÃÃo de pulso usando processos paramÃtricos em fibras Ãpticas
The recent telecommunication development can be, to a large extent, attributed to the capacity of transmitting information (video, sound and data) at high transmission rates (Tbits/s) through the optical fiber. The constant advances in the technological development of active and passive devices based on optical fibers have enabled a steady increase in commun
Publicado em: 2007
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3. Amplificador e conversor de comprimento de onda hÃbrido TDFA/FOPA para comunicaÃÃes Ãpticas
A regiÃo de comprimento de onda do espectro eletromagnÃtico usado nas telecomunicaÃÃes Ãpticas sÃo definidas pela International Telecommunications Union (ITU) como, banda C (Conventional Band, 1530-1565 nm), banda L (Long Wavelength Band, 1565- 1625 nm), banda S (Short Wavelength Band, 1450-1530 nm), e bandas mais distantes de ambos os lados da banda C
Publicado em: 2006
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4. TÃcnicas de Interferometria Ãptica aplicada à medicina, odontologia e comunicaÃÃes Ãpticas
In the work described in this thesis, we used two different interferometric techniques, the coherent optical frequency domain reflectometry (COFDR), and the optical coherence tomography (OCT). Both techniques are based on the Michelson interferometer. They were applied to optical communications and to medical and dentistry imaging. We will give a general des
Publicado em: 2006
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5. Optical Amplifiers for High Capacity Multichannel Communication Systems / Amplificadores Ãpticos para Sistemas de ComunicaÃÃo Multicanais de Alta Capacidade
The ever increasing demand for data traffic suggests the capacity expansion of optical communication systems. One can obtain this by increasing the number of transmitted channels in alternative optical bands. To achieve this it is necessary to develop optical amplifers for each band. The most common amplifiers are EDFA. Nevertheless, Raman amplifiers and TDF
Publicado em: 2005
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6. Amplificadores Ãpticos a fibras dopadas com TÃlio para a banda "S"
Due to the ever increasing amount of data traffic it has become necessary to expand the capacity of optical communication systems. This can be achieved by increasing the number of transmitted channels using Wavelength Division Multiplexing. Due to improvements of the manufacturing process of optical fibers, it is possible to use the entire low-loss spectral
Publicado em: 2005