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Técnicas de integração de circuitos de auxílio à comutação aplicadas a inversores e a sistemas multi-pólos
(Universidade Federal de Santa Maria, 2007-09-19)
This Ph. D. dissertation presents contributions to the investigation of soft-switching cells with integrated components, presenting three main approaches: (i) Soft-switching cells with filter coupled inductor; (ii) Integrated ...
Projeto de reatores eletronicos para hid baseado no conversor chopper AC
(Universidade Federal de Santa Maria, 2007-08-24)
This thesis proposes a design of a power supply for high-pressure discharge lamps based on a high efficiency and high power factor electronic ballast, without exciting the
intrinsic acoustic resonance. The ballast consists ...
Ambiente multimidia para educação mediada por computador na perspectiva da investigação-ação: tutorial e curso a distância
(Universidade Federal de Santa Maria, 2007-06-04)
With the quick growth of distance education mediated by Information and Communication Technologies, institutions have been gradually using this modality of education as a means to access knowledge and expand opportunities ...
Um estudo sobre implementação de ciclos de usinagem através de programação parametrizada em máquinas de comando numérico computadorizado
(Universidade Federal de Santa Maria, 2007-07-26)
The computer numerical control (CNC) machines can be programmed. They have functions that help to get different superficies of varied geometry in the manufacturing process of mechanical parts. This research has the purpose ...
Estudo do comportamento de solos através de ensaios de placa de diferentes diâmetros
(Universidade Federal de Santa Maria, 2007-06-15)
The dimensioning of shallow foundations requires the professional to define clearly and objectively, for the soil in question, the load capacity and forecast the settlings of the foundation submitted to the structure having ...
Estudo da eficiência da duplicação de janelas na melhoria do isolamento acústico destes componentes
(Universidade Federal de Santa Maria, 2007-03-28)
The aim of this research is to evaluate sound insulation behavior of double windows, when a second window is placed upon a previous one, keeping an air layer between them. This was done through standard tests carried out ...
Estratégias de marketing de relacionamento da Rede Sinodal de Educação: a relação entre as expectativas e a percepção da qualidade em serviços
(Universidade Federal de Santa Maria, 2007-06-15)
The educational environment has presented in recent years one high degree of competitiveness, the incited competition and the increasing demand for a great variety of courses have motivated the education institutions to ...
Estratégias de sustentabilidade e desenvolvimento para o setor da carne bovina - um estudo de caso em um frigorífico de São Gabriel - RS
(Universidade Federal de Santa Maria, 2007-06-27)
This study describes supportability and development strategies for the bovine meat section in relation to the changes in the atmosphere, through a case study applied
to the activities of a slaughterhouse in the south area ...
Estudo comparativo entre as modernas composições de pisos flutuantes quanto ao desempenho no isolamento ao ruído de impacto
(Universidade Federal de Santa Maria, 2007-12-20)
The impact noise is a challenge to builders and designers because of the difficulty in the interruption of vibrations due to the rigidity of the connections between the structural elements. Many previous researches aimed ...
Desempenho térmico em edifícios de escritório na região central do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2007-01-19)
This study seeks to detect the thermal performance in Office buildings as they add to a significant quantity of energy consumption in this country. Researches have revealed that 40 % of the final electricity consumption ...