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Avaliação da qualidade do processo de lingotamento contínuo na presença de correlação cruzada
(Universidade Federal de Santa Maria, 2013-07-25)
In the current competitive market, a great part of companies has as the main goal the search for continuous improvement of their products and services. Therefore, the application of statistical methods has great relevance ...
Sistemas eletrônicos para iluminação de exteriores empregando diodos emissores de luz (LEDs) alimentados pela rede elétrica e por baterias
(Universidade Federal de Santa Maria, 2012-11-30)
This work presents a design methodology and analysis of electronic circuits applied to
outdoor lighting systems using light emitting diodes (LEDs). The goal of topologies developed
here is to supply the LEDs from the ...
Conversor flyback modificado para alimentação de lâmpadas de descarga em alta pressão: projeto, modelagem e controle
(Universidade Federal de Santa Maria, 2012-03-01)
This dissertation consists of the design of an electronic ballast to drive high pressure discharge (HID) lamps, focusing on low power applcations. An innovative modified yback conveter is proposed as main part of an ...
Avaliação do comportamento de estacas escavadas moldadas com resíduos de construção civil
(Universidade Federal de Santa Maria, 2012-06-29)
The generation from residues of civil construction brings serious implications for society and
the environment. Ahead of this, have sought alternative to the use of such residues in
engineering with a view to contributing ...
Previsão de consumo de energia elétrica e elaboração de modelos de otimização em cooperativa de eletrificação rural
(Universidade Federal de Santa Maria, 2011-08-30)
This dissertation aims to build a set of tools based on mathematical models to assist a rural
electrification cooperative in taking strategic decisions on investing in electrical generation in
face of erratic and ...
Determinação experimental e numérica da redução sonora aérea em paredes de alvenaria utilizadas em habitações
(Universidade Federal de Santa Maria, 2011-03-15)
In this research some kinds of masonry walls have been used as internal divisions in
three Brazilian dwelling buildings to determine the airborne sound reduction, by
experimental tests in field and computer simulations. ...
Proposta de modelo de diagnóstico da competitividade de agroindústrias produtoras de alimentos de origem animal
(Universidade Federal de Santa Maria, 2012-04-02)
The Brazilian agribusiness segment is experiencing a unique moment in relation to opportunities for expansion and consolidation. However, while it expands, exposes weaknesses that have led the segment s companies less ...
Gerador de indução com excitação estática, filtro ativo e armazenamento de energia para sistemas eólicos isolados
(Universidade Federal de Santa Maria, 2013-03-01)
The growing global demand for electricity, increasing scarcity of the conventional
energy sources and the need to reduce environmental impacts contributed to the pronounced
development of new technologies based on clean ...
Estudo da carbonatação natural de concretos com pozolanas: monitoramento em longo prazo e análise da microestrutura
(Universidade Federal de Santa Maria, 2012-08-31)
The carbonation in concrete is caused by the penetration of environmental carbonic
anhydride (CO2) in concrete by diffusion, being considered one of more important
structures pathologies. It occurs naturally in concrete ...
Desenvolvimento de uma topologia híbrida a três fios para regulação de tensão aplicada em microcentrais hidrelétricas
(Universidade Federal de Santa Maria, 2013-01-25)
This dissertation presents the study of a three-wire hibrid topology for voltage
regulation for micro-hydroelectric generators that use self-excited induction in isolated
operation. Initially, a literature review is ...