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Planejamento de capacidade com incerteza na demanda em unidades de distribuição de energia elétrica
(Universidade Federal de Santa Maria, 2019-02-19)
The service management system performance is closely related to the operational success. When considering electric power distribution systems, regulatory polices impose penalties and minimum service levels which demand a ...
Análise de risco do investimento em ações de empresas agrícolas presentes na B³
(Universidade Federal de Santa Maria, 2019-02-21)
The financial area is important for the development of companies and countries, in need of improved investment techniques. The quest for profit in this market brings with it exposure to a certain level of risk that can be ...
Melhoramentos inferenciais no modelo Beta-Skew-t-EGARCH
(Universidade Federal de Santa Maria, 2016-02-25)
The Beta-Skew-t-EGARCH model was recently proposed in literature to model the
volatility of financial returns. The inferences over the model parameters are based on the maximum
likelihood method. The maximum likelihood ...
Modelo beta autorregressivo de médias móveis: critérios de seleção e aplicações
(Universidade Federal de Santa Maria, 2015-02-27)
Time series modeling and forecasting has many applicability in scientific and technological
researchs. Specifically about variables restricted to the interval (0; 1), which includes
rates and proportions, the classical ...
Avaliação da aplicação de CO2 supercrítico na presença de cosolventes para a reciclagem de placas de circuito impresso de celulares
(Universidade Federal de Santa Maria, 2015-03-06)
Technological development and intensive marketing support the growth of demand for electrical and electronic equipment (EEE), which have as a primary component printed circuit boards (PCBs). These devices have become ...
Comparação de técnicas para concentração de índio de telas de LCD e aplicação de eletro-obtenção
(Universidade Federal de Santa Maria, 2015-12-18)
Because of the constant introduction of new technologies to market growth of electronic waste generation has gained importance on the world stage, among these residues are cell phones. Deliver useful life increasingly ...
Utilização de CO2 supercrítico e ácidos orgânicos na lixiviação de índio presente em telas de lcd de telefones celulares
(Universidade Federal de Santa Maria, 2015-07-15)
The growth in the generation of electrical and electronic equipment waste (WEEE) has won global importance and cell phones are highlighted between these wastes because of short life cycle and its amounts of hazardous ...
Análise da viabilidade técnica e econômica da utilização de biogás em motores de ignição por compressão para geração de energia elétrica
(Universidade Federal de Santa Maria, 2019-05-21)
Growth in energy demand and security of energy supply have become a concern in recent decades. The high cost of fossil fuels and the need to reduce the emission of greenhouse gases have made renewable energy sources ...
Efeitos do transbordamento da produtividade agrícola brasileira
(Universidade Federal de Santa Maria, 2019-03-26)
Agriculture is essential for the country's economic development. Brazil stands out in world agricultural production. All surplus produced is destined for exports. In this way, this research aimed to determine the agricultural ...
Produção de olefinas leves a partir de etanol em ZSM-5 sintetizada sem direcionador nitrogenado
(Universidade Federal de Santa Maria, 2015-03-05)
The petrochemical industry is currently strongly based on the production of light olefins ethylene and propylene, which are mainly produced by hydrocarbons from oil. Due to the environmental appeal and unstable oil market ...