Switching Theory
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Investigation of dynamic instability of three plates switch under step DC voltage actuation using modified couple stress theory
Abstract In this paper dynamical instability of three-layer micro-switch under DC voltage actuation has been studied. Recent studies have used the classical beam theory while leaving out the length scale parameter. In this paper dynamic behavior of the switch has been investigated based on couple stress theory and considering the length scale parameter. To t
Lat. Am. j. solids struct.. Publicado em: 10/07/2018
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2. A study on the design of networks in competitive environments / Um estudo sobre o dimensionamento de redes em ambientes competitivos
Esta dissertação propõe um estudo de um novo modelo para o dimensionamento de redes baseadas em comutação de circuitos, tais como as redes óticas roteadas por comprimento de onda. O novo modelo é projetado para dar suporte a diversas estratégias de negócios da operadora em um mercado competitivo. Primeiramente o caso do monopólio é analisado, comp
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/03/2010
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3. How specialists can be generalists: resolving the "parasite paradox" and implications for emerging infectious disease
The parasite paradox arises from the dual observations that parasites (broadly construed, including phytophagous insects) are resource specialists with restricted host ranges, and yet shifts onto relatively unrelated hosts are common in the phylogenetic diversification of parasite lineages and directly observable in ecological time. We synthesize the emergin
Zoologia (Curitiba). Publicado em: 2010-04
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4. Essays in macroeconomy and dynamic term-structure models
This thesis is composed of three articles with the subjects of macroeconomics and - nance. Each article corresponds to a chapter and is done in paper format. In the rst article, which was done with Axel Simonsen, we model and estimate a small open economy for the Canadian economy in a two country General Equilibrium (DSGE) framework. We show that it is imp
Publicado em: 19/12/2009
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5. Escalabilidade de fonte de alimentação chaveada para uso em eletrodomesticos / Switch mode power supply scalability fo use in home appliances
This work describes the development of a switch mode power supply to be used at home appliances, capable to deliver three outputs with voltage and power different levels, changing a minimum number of components between them. At the first part of the work is presented the application of the power supply and its needs, followed by the specifications and choose
Publicado em: 2009
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6. Algebraic formulation for modeling hop-by-hop multi-constrained routing algorithms. / Formulação algébrica para a modelagem de algoritmos de roteamento multi-restritivo hop-by-hop.
This work presents a new mathematical structure for paths algebra that allows the convergence analysis of hop-by-hop multi-constrained routing algorithms and, under the traffic engineering and quality of service perspectives in the Generalized Multiprotocol Label Switching (GMPLS) architecture, trustily ensures the aggregation of new routing metrics in a con
Publicado em: 2008
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7. Espectroscopia Ãptica nÃo linear de vidros especiais e colÃides
Nonlinear optical properties of special glasses and colloids were studied using the zscan technique. This technique aalows to calculate the nonlinear refraction index and the nonlinear absorption coefficient using the self-focusing or defocusing effect that appears when the incident laser pass through a nonlinear medium. Orthophosphate and polyphosphate anti
Publicado em: 2008
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8. Proposal and performance analysis of a combined input and output queuing packet switch / Proposta e analise de desempenho de um comutador de pacotes com enfileiramentos na entrada e na saida
A QoS (Quality of Service) provisioned CIOQ (Combined Input Output Queuing) switch using crossbar structure with m parallel lines per output port is proposed in this work. The packets at input buffers are transferred to the output buffers by means of mxN internal lines. Since all internal lines have the same speed as external links, no internal clock speedup
Publicado em: 2006
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9. Uso da técnica do pulso eletroacústico para o estudo de polietilenos e titanato zirconato de chumbo (PZT). / Use of the pulsed electroacoustic technique for the study polyethilens and lead zirconate titanate (PZT).
The purpose this work was using to PEA method for investigation of the ferroelectrics response in PZT and space charge formation in polymeric materials (PE, XLPE) used as electrical insulation for high voltage devices. The PEA method is based on propagation acoustic signal generated by the application of a short electric field pulse, typically 5 ns in durati
Publicado em: 2003
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10. REGIME-SWITCHING MODELS: THRESHOLDS, SMOOTH TRANSITIONS, AND NEURAL NETWORKS / MODELOS COM MÚLTIPLOS REGIMES PARA SÉRIES TEMPORAIS: LIMIARES, TRANSIÇÕES SUAVES E REDES NEURAIS
The goal of this thesis is to propose more flexible regime-switching models combining the ideas from the SETAR, STAR, and ANN specifications. The models discussed in this thesis are models with multi-regimes and with the transition between regimes controlled by a linear combination of known variables. A modelling cycle procedure, based on the work of Teräsv
Publicado em: 2000
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11. Temperature-induced switching of the bacterial flagellar motor.
Chemotaxis signaling proteins normally control the direction of rotation of the flagellar motor of Escherichia coli. In their absence, a wild-type motor spins exclusively counterclockwise. Although the signaling pathway is well defined, relatively little is known about switching, the mechanism that enables the motor to change direction. We found that switchi
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12. Preferred sites of recombination in poliovirus RNA: an analysis of 40 intertypic cross-over sequences.
The genome of poliovirus consists of a single strand of RNA approximately 7.5 kb long. Analysis of the sequences around 40 unique recombination sites reveals several features that differ significantly from those expected of randomly located sites. These features, which include a broad zone of elevated homology on the 3' side of the cross-over, support the th