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Prototipação e análise de circuitos mutiplicadores array de baixo consumo
(Universidade Federal de Santa Maria, 2005-03-23)
This work presents the prototyping and analysis of new multiplier architectures under the physical level of abstraction. Circuits recently presented in the academic community are analyzed and compared against the state of ...
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 ...
Rede de iluminação semicondutora para aplicação automotiva
(Universidade Federal de Santa Maria, 2005-02-28)
This work describes the design of a semiconductor lighting system applied to omnibus interiors. The system is composed by several lighting terminals, and some of them have different purpose, once an omnibus has different ...
Controlador nebuloso para motor de ignição por compressão operando com gás natural e óleo diesel
(Universidade Federal de Santa Maria, 2006-02-24)
A foreseeable shortage of petroleum, associated to a growing ecological conscience, demand for alternative sources of energy and more efficient and less pollutant combustion processes. Among the few pollutant fuels this ...
Aspectos qualitativos da água subterrânea no Campus da UFSM, Santa Maria - RS
(Universidade Federal de Santa Maria, 2005-02-28)
Nowadays there is an expressive increase of the use of groundwaters because of the lower cost for treatment, distribution and, mainly the scarcity of hydrous resources. Over the years 40 tubular wells were drilled to supply ...
Caracterização do transporte de sedimentos em pequeno rio urbano na cidade de Santa Maria-RS
(Universidade Federal de Santa Maria, 2005-02-24)
This paper presents the results of the sediment transport assessment in a small urban stream in Santa Maria city, RS. Liquid and solids discharges were measured and the bed material was collected during thirteen raining ...
Algoritmos evolutivos para o problema de seqüenciamento de tarefas em máquinas paralelas com tempos de preparação dependentes da seqüência
(Universidade Federal de Santa Maria, 2004-10-11)
This work presents three evolutionary strategies to solve the problem of scheduling a given set of n jobs to m identical parallel machines with the objective of minimizing makespan. There is a sequence dependent setup ...
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 ...
Análise comparativa: sistemas estruturais convencionais e estruturas de lajes nervuradas
(Universidade Federal de Santa Maria, 2008-04-25)
This study has as objective to analyze, comparativily, the costs between the conventional structural systems and the rib slabs structural systems in reinforced concrete. Part of the estimated one that had to the great ...
Análise da conexão de geradores eólicos duplamente alimentados com compensação série
(Universidade Federal de Santa Maria, 2008-08-29)
This dissertation addresses the main problems related to doubly-fed induction generators
(DFIG) connection to grids with unbalanced voltages. Series compensation is used
to achieve balanced voltage on the stator of the ...