Complex Circuits
Mostrando 13-24 de 99 artigos, teses e dissertações.
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13. Efeitos da ascensão da China sobre o comércio externo brasileiro: reprimarização, perda de mercados e ampliação de oportunidades
The research examines the effects of China s international trade expansion and diversification of its export and import portfolio on Brazilian foreign trade, both in terms of changes in the trade portfolio between the two countries and in terms of competition in other markets. The study will highlight the period between 1998 to 2008. This range includes diff
Publicado em: 2010
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14. São Paulo e Rio de Janeiro: hipermetrópoles, turismo e moda como economias culturais do espaço / São Paulo and Rio de Janeiro: hypermetropolis tourism and fashion as cultural economies of space
This thesis analyze the sociospatial changes at São Paulo and Rio de Janeiro capital cities in the period of turnover from the XX to the XXI Century with regards to tourism and fashion, these being reflected as cultural economies of space. Tourism uses and senses are considered beyond its categorizations, identifying an urban touristification process at dif
Publicado em: 2010
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15. Planejamento estrutural e simulação de partes de controle de circuitos integrados
Este trabalho tem como objetivo principal apresentar o estudo comparativo de diversas arquiteturas para a implementação de partes de controle de sistemas digitais, propondo um método de concepção orientado para a etapa de síntese no domínio estrutural. E apresentada uma descrição geral dos sistemas digitais que aborda os seguintes aspectos: a classi
Publicado em: 2010
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16. Risco : microprocessador RISC CMOS de 32 bits / Risco - a 32-bit CMOS RISC microprocessor
Este trabalho apresenta o estudo, a definição e a simulação elétrica e lógica de um microprocessador CMOS de 32 bits, com arquitetura tipo RISC - o Risco. Dentre as principais características do Risco destacam-se: dados, instruções e endereços são palavras de 32 bits; a unidade de endereçamento é a palavra, permitindo um acesso a 4 Giga palavras
Publicado em: 2010
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17. Learning about brain physiology and complexity from the study of the epilepsies
The brain is a complex system, which produces emergent properties such as those associated with activity-dependent plasticity in processes of learning and memory. Therefore, understanding the integrated structures and functions of the brain is well beyond the scope of either superficial or extremely reductionistic approaches. Although a combination of zoom-i
Brazilian Journal of Medical and Biological Research. Publicado em: 2009-01
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18. SYNTHESIS METHODOLOGY FOR SIMPLIFIED ZVT TOPOLOGIES APPLIED TO BIDIRECTIONAL PWM POLES / METODOLOGIA DE SÍNTESE DE TOPOLOGIAS ZVT SIMPLIFICADAS APLICADAS A PÓLOS PWM BIDIRECIONAIS
Among the soft-switching techniques, the zero-voltage-transition (ZVT) technique has been accepted well by the industry due its attractive characteristics, such as simplicity, low losses in the auxiliary commutation circuit (ACC), operation with soft-switching for a wide load range, and closest operation to the PWM converter counterpart. In three-phase volta
Publicado em: 2009
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19. Synthese topologique de macro-cellules en technologie cmos
Les problèmes majeurs de la génération automatique du dessin des masques des circuits intégrés sont la dépendance vis-à-vis des règles de dessin et le dimensionnement correct des transistors. Les méthodes traditionnelles, telles que l'utilisation de cellules pré-caractérisées, manquent de flexibilité, car les portes des bibliothèques (en nombre
Publicado em: 2009
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20. Preparação e caracterização estrutural e elétrica de cristais mistos de K1-x(NH4)xH2PO4
The preparation and structural and electrical characterization of KH2PO4 (KDP), (NH4)H2PO4 (ADP) and K1-x(NH4)xH2PO4 (KADPx) mixed crystals grown by the method of solvent evaporation at 40 C and with x = 0, 0.076, 0.118, 0.357, 0.857, 0.942, 1.0 was carried out. Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) was performed in order to deter
Publicado em: 2009
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21. Entre campo e cidade : infancias e leituras entrecuzadas : um est6udo no Assentamento Palmares II, Estado do Para / Between countryside and city : the intersection of childhood and literacy : a study in Palmares II rural settlement, State Para
The work entitled "Between countryside and city: the intersection of childhoods and reading - a study in the Palmares II Rural Settlement, Pará" is the result of research carried out with 23 children aged between 10 and 14 years old in the Palmares II Rural Settlement in the southeast of Pará (Brazil). Research objectives can be summarized in three princip
Publicado em: 2009
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22. Association of hypotalamic POMC, NPY and IRS2 with feeding behavior in norma and overweight Wistar rats / Associação do PMOC, NPY e IRS2 hipotalâmicos com padrões de comportamento alimentar em ratos wistar normais e sobrepeso
The feeding behavior of a specie is determined by a group of phylogenetic, ontogenetic, and epigenetic features, and regulated by internal and external factors to the organism. The natural phenomena that govern life in our planet are mainly periodic, and the food stocks is not an exception. Each harvest is followed by a time between harvests, and this rhythm
Publicado em: 2009
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23. Influence of intensive light exposure on the complex impedance of polymer light-emitting diodes
In this work we investigated the effect of visible radiation on the electrical properties of poly[(2-methoxy-5-hexyloxy)-p-phenylenevinylene]- MH-PPV films and light emitting diodes. Complex impedance measurements of (Au or ITO)/MH-PPV/(Au or Al) samples were carried out at room temperature and exposed to white light. Over the frequency range from 100 mHz to
Materials Research. Publicado em: 2008-06
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24. Verificação de equivalência de circuitos combinacionais dissimilares através do reaproveitamento de cláusulas de conflito
As time goes by, integrated circuits are becoming ever more present in our lives. From the mobile phones we use to the cars we drive, we have almost constant interaction with electronic devices. This proliferation leads to the necessity for more agile and compact circuits, which in turn, makes them more complex and expensive. To produce error-free circuits,
Publicado em: 2008