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Itens para a visualização no momento 131-140 of 143
Previsão de evasão em cursos de ensino superior através de aprendizado de máquina associado à análise de disciplinas aprovadas
(Universidade Federal de Santa Maria, 2017-12-14)
The scholar dropout on higher education context reaches dangerous levels. As studies
DAVOK; BERNARD (2016), about 50% of exact science students don’t finish their respective
courses. To help finding a useful solution, ...
Distribuição e manipulação de coerência quântica em sistemas multipartidos
(Universidade Federal de Santa Maria, 2017-02-24)
Repeatedly in the field of Quantum Information Science (QIS) it’s essentially required of
physical systems the quantification concerning its quantum phenomena, such as Quantum
Coherence (QC) relying in quantum superposition ...
Estratégias de gamificação aplicadas à técnica de entrevista para levantamento de requisitos de software
(Universidade Federal de Santa Maria, 2017-12-12)
Requirements elicitation is a crucial phase for software development, the stage where
most of the failures in projects are concentrated. Considering the educational context, these
problems can be explained by considering ...
Determinação de Cl, I e Hg de forma direta em amostras diversas por espectrometria de absorção atômica e molecular de alta resolução com fonte contínua em forno de grafite
(Universidade Federal de Santa Maria, 2017-01-11)
Three analytical methods were developed for the determination of chlorine, iodine and mercury in solid and liquid samples, directly by high resolution continuum source atomic and molecular absorption spectrometry in graphite ...
Síntese de 1-(selenobutil)-2-fenil-4H-selenofeno[2,3-c]cromenos via reação de ciclização mediada por sais de ferro
(Universidade Federal de Santa Maria, 2017-12-04)
This paper reports the study developed for the preparation of 1-(butylselanyl)-2-phenyl-4H-selenopheno[2,3-c]chromenes substituted by cyclization in intramolecular cascade of arylpropargyl ethers. Firstly, the study was ...
A relação entre a poluição do ar e as principais variáveis climatológicas na cidade de Canoas, Rio Grande do Sul
(Universidade Federal de Santa Maria, 2017-05-26)
Oftentimes, air pollution is not noticeable, and there are few cities with proper instruments to measure it. Air pollution has directly affected people’s health and is one of the most severe forms of pollution; especially ...
Aplicação de técnicas procedurais em GPU para renderização de nuvens volumétricas em tempo real
(Universidade Federal de Santa Maria, 2017-12-11)
Efeito hall de spin inverso em multicamadas de Ta/NiFe/FeMn/Ta
(Universidade Federal de Santa Maria, 2017-10-27)
In the present thesis, the generation of a dc voltage in exchange-biased Ta/NiFe/FeMn/Ta
multilayers at ferromagnetic resonance was investigated. This dc signal is related to two distinct
phenomena, namely, the spin ...
Magnetorresistência e correntes de spin em Multicamadas de Ni81Fe19/ZnO/Pd
(Universidade Federal de Santa Maria, 2017-03-02)
In this work, we analyzed samples of thin films Ni81Fe19 and Pd with ZnO spacer. Ni81Fe19
is a ferromagnet with a low saturation magnetic field. Pd is a normal metal with high spinorbit
coupling, much used in spin Hall ...
Formação sequencial de ligações carbono-carbono/carbono-selênio mediada por cloreto férrico e dicalcogenetos de diorganoíla: síntese e reatividade de 2-organocalcogenil-naftalenos
(Universidade Federal de Santa Maria, 2017-07-31)
In the present study, a series of aryl alkynols functionalized was subjected to intramolecular cyclization reaction promoted by iron(III) chloride and diorganyl dichalcogenides allowing the synthesis of 2-organoselenyl-n ...