Diseño de sistema de suspensión trasera: alternativa Uni-trak

El objeto de este proyecto es el diseño de un sistema de suspensión trasera regulable de una moto de competición. Para su diseño se van a tener en cuenta las especificaciones ofrecidas por la Competición Internacional MotoStudent, competición impulsada por la Fundación Moto Engineering Foundation y TechnoPark Motorland. Además, también se contará con unos parámetros de partida, ya definidos, por el equipo que competirá en dicha competición representando a la Escuela Técnica Superior de Ingeniería de Bilbao (ETSI). La parte que corresponde a este proyecto es el diseño de una de las alternativas presentes de suspensión trasera, la alternativa de suspensión trasera de bieletas llamado Uni-trak.

Ensino integrado : uma analise do curso de graduação em nutricionista da UNI-RIO

O presente estudo teve como objetivo analisar o Currfculo do Curso de Graduação em Nutricionista da UNI-RIO a fim de constatar o nível de integração horizontal e vertical na seleção e organização dos conteúdos do ciclo profissional do referido Curso. Pode ser classificado como 'uma avaliação de contexto do tipo de congruência. Para a verificação dos diferentes tipos de integração foi construído uma Matriz Analítica Este instrumento apresenta a identificação dos campos de atuação do Nutricionista, as atribuições do profissionaJ, os temas integrados e as disciplinas do currículo. A base de análise dos dados foram os planos de curso do ano de 1981, além da grade curricular. Procedimentos e critérios foram elaborados abrangendo dois níveis de integração: multidisciplinar e pluridisciplinar, adotando Jantsch como referencial teórico. Conclui-se que em nível de coerência externa o Currículo está enriquecido em relação ao Mínimo e congruente com a Lei n 5276/67; em nível de coerência interna há integração objetivos/conteúdo; quanto à integração horizontal e vertical / o Curso está integrado apenas no 1 nível; quanto à teoria / prática os campos estão abrangidos, mas os conteúdos defasados do perfil da Matriz. Recomendou-se: a adoção da Matriz Analítica, a revisão de pré e có-requisitos, atividades de estágio mais compatíveis com o perfil profissional proposto e a realização de seminários para aperfeiçoamento do corpo docente na área pedagógica.

Theoretical analysis and experimental study of the space-charge-screening effect in uni-traveling-carrier photodiode

A new optimized structure of an UTC (uni-traveling-carrier) photodiode is developed and epitaxied by metal-organic chemical vapor deposition. We fabricated a UTC photodiode of 30 mu m in diameter. Theoretical simulation based on drift-diffusion model was used to analyze the space-charge-screening effect in UTC photodiode primarily in two aspects: the carrier concentrations and the space electric field. The simulation results were generally in agreement with the experimental data.

A new phototransistor with uni-travelling-carrier and optically gradual coupling properties

Based on appropriate combination of different band-gap InGaAsP, a new edge-coupled two-terminal double heterojunction phototransistor (ECTT-DHPT) was designed and fabricated, which is double heterojunction, free-aluminium, and works under uni-travelling-carrier mode and optically gradual coupling mode. This device is fully compatible with monolithic micro-wave integrated circuits (MMIC) and heterojunction bipolar transistor (HBT) in material and process. The DC characteristics reveal that the new ECTT-DHPT can perform good optoelectronic mix operation and linear amplification operation by optically biased at two appropriate value respectively. Responsivity of more than 52 A/W and dark current of 70 nA (when V-EC = 1 V) were obtained.

High-performance evanescently-coupled uni-traveling-carrier photodiodes

A new evanescently-coupled uni-traveling-carrier photodiode (EC-UTC PD) based on a multimode diluted waveguide (MDW) structure is fabricated, analysed and characterized. Optical and electrical characteristics of the device are investigated. The excellent characteristics are demonstrated such as a responsivity of 0.36 A/W, a bandwidth of 11.5 GHz and a small-signal 1-dB compression current greater than 18 mA at 10 GHz. The saturation current is significantly improved compared with those of similar evanescently-coupled pin photodiodes. The radio frequency (RF) bandwidth can be further improved by eliminating RF losses induced by the cables, the probe and the bias tee between the photodiode and the spectrum analyzer.

Fabrication and Investigation of High Efficiency Evanescently Coupled Uni-Traveling Carrier Photodiodes

In this paper, an evanescently coupled uni-traveling carrier photodiodes (EC-UTC-PDs) have been fabricated and investigated, which can benefit from the incorporation of a multimode diluted waveguide of appropriate length with experiment-simulation comparison. A high responsibvity of 0.68 A/W at 1.55-mu m without an anti-reflection coating, -1 dB compression current of more than 19 mA, and a large -1 dB vertical alignment tolerance of 2.2 mu m were achieved.

Design and Characterization of Evanescently Coupled Uni-Traveling Carrier Photodiodes with a Multimode Diluted Waveguide Structure

A new evanescently coupled uni-traveling carrier photodiode (EC-UTC-PD) is designed, fabricated and characterized, which incorporates a multimode diluted waveguide structure and UTC active waveguide structure together. A high responsivity of 0.68A/W at 1.55-mu m without an anti-reflection coating, a linear photocurrent responsivity of more than 21 mA, and a large-1 dB vertical alignment tolerance of 2.5 mu m are achieved.

Monolithic optical gates based on integration of evanescently-coupled uni-traveling-carrier photodiodes and electroabsorption modulators

We report on chip-scale optical gates based on the integration of evanescent waveguide unitraveling-carrier photodiodes (EC-UTC-PDs) and intra-step quantum well electroabsorption modulators (IQW-EAMs) on n-InP substrates. These devices exhibit simultaneously 2.1 GHz and -16.2 dB RF-gain at 21 GHz with a 450 Omega thin-film resistor and a bypass capacitor integrated on a chip.

La justice sociale dans la jurisprudence au Royaume-Uni

This chapter surveys the extent to which UK courts have developed the concept of social justice. It focuses on decisions reached in the areas of equality, welfare law, education, and health care, and concludes with a consideration of the extent to which UK judges consider that individuals should take personal responsibility for their own well-being.