Centro de Ciências Exatas e de Tecnologia - CCET: Recent submissions
Itens para a visualização no momento 1301-1320 of 7301
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Análise comparativa de benchmarks para banco de dados NoSQL orientados a grafos de propriedades
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Ciência da Computação - PPGCC, Câmpus São Carlos, 06/07/2021)The new era of data economics, based on data sets with enormous volume, wide variety of formats, and rapid speed in data production and utilization, has brought the need for new data management structures and methods. Then ... -
High integrated battery monitoring system with active balancing up to ±10A
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Engenharia Elétrica - PPGEE, Câmpus São Carlos, 22/02/2022)This master's thesis describes the development, construction, and setup of a flexible and modular, highly integrated battery monitoring system. The electronic unit uses an active balancing process with currents up to ±10A ... -
An analysis of the relationship between additive manufacturing and circular economy
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Engenharia de Produção - PPGEP, Câmpus São Carlos, 22/03/2022)Additive Manufacturing (AM) is an important technology of Industry 4.0. It allows the fabrication of objects layer by layer in a continuous or incremental way. Circular Economy (CE) aims to improve resource efficiency in ... -
Estimador seletivo do conteúdo harmônico de tensão e corrente baseado em rede neural profunda
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Engenharia Elétrica - PPGEE, Câmpus São Carlos, 27/04/2022)A common issue when non-linear loads are present in electric power distribution systems is voltage and/or current harmonic distortion. This power quality (PQ) problem can be mitigated, but first the harmonic components ... -
Soluções positivas para equações elípticas com operadores fracionários
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Matemática - PPGM, Câmpus São Carlos, 18/03/2022)In this work, we present results of existence, non-existence and multiplicity of positive solutions to elliptic problems involving the fractional p-Laplacian operator and the fractional Laplacian in the critical case, ... -
Utilização de métodos de aprendizado de máquina para estimação de escores de propensão
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 18/04/2022)Increasingly larger and more complex databases can be easily obtained and appropriate technologies for modeling massive amounts of data become increasingly necessary in order to optimize results and predictions. Machine ... -
Custos no processo de refino do petróleo: um estudo de caso da refinaria Alberto Pasqualini (REFAP)
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 11/04/2022)Even with the growing demand for sustainable energy sources in recent decades, oil products continue to be the main fuels used in the world, also having several applications in various areas of industry. The oil refining ... -
A química do solo: revisão bibliográfica e principais métodos de investigação agronômica
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 26/04/2022)Throughout human history, agriculture figures prominently among economic activities. The notion that productivity in the field is conditioned to environmental factors is as old as the activity itself, but what we now call ... -
Attractors for processes on time-dependent spaces
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Matemática - PPGM, Câmpus São Carlos, 12/04/2022)The goal of this master’s degree dissertation is to study the asymptotic behavior of non-autonomous hyperbolic partial differential equations with time-dependent coefficients. In order to achieve that, we introduce the ... -
Avaliação das causas, impactos e alternativas relacionados ao rompimento de barragens convencionais na indústria de mineração
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 12/04/2022)The current events related to the rupture of mining tailings dams, potentiated by the heavy rainfall in the Brazilian regions where they are located, have made the need to assess the environmental and socioeconomic impacts ... -
Definição de estratégias de vendas na indústria química
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 11/04/2022)n the chemical industry scenario, there is a high complexity in identifying competitive advantages for each company and, from that, defining the best sales strategy. This is due to the diversification of the sector, since ... -
Avaliação pós-ocupação (APO) de habitações de interesse social (HIS) em Indaiatuba, SP
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 20/04/2022)The Post-Occupancy Assessment (POA) is a tool that aims to support improvements in subsequent projects and to develop constructive innovations. Linked to the process of construction of Housing of Social Interest (HIS), it ... -
Reintegração da borracha de pneus inservíveis para construção civil
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 17/11/2021)The disposal of tires has been a major social challenge nowadays, which is why, many entities and companies that operate in this sector contribute to combating the incorrect dumping of tires. One of the methods most used ... -
Análise numérica de barras compostas em perfis de aço formados a frio submetidas à compressão
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Engenharia Civil - PPGECiv, Câmpus São Carlos, 21/10/2021)Built-up columns are an interesting alternative when isolated channels do not comply with structural performance requirements. During their lifespan, one of the most common stresses in built-up columns is the compression. ... -
Detecção de defeitos em tecidos através de redes neurais convolucionais
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 03/05/2022)This work aims to apply transfer learning to a detector based on convolutional neural networks to identify defects and patterns through tissue images. With Industry 4.0, intelligent systems are increasingly being applied ... -
Reações de fotooxigenação de pinenos em pinocarvonas, trans-pinocarveóis e mirtenal: uma abordagem em regime de fluxo contínuo
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 18/04/2022)In this work, a continuous flow protocol to prepare (-)-pinocarvone, (-)-trans- pinocarveol and (+)-myrtenal from (+)--pinene, (-)--pinene and -pinene through photooxygenation reactions was described. Furthermore, ... -
Síntese, caracterização e estudo catalítico de complexos miméticos das enzimas Nitrito Redutase e Anidrase Carbônica
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 30/03/2022)Metalloenzymes are efficient biological catalysts that inspire the creation of coordination compounds that mimic their active site. In this work, the synthesized complexes were inspired by two enzymes: Nitrite Reductase ... -
Não unicidade para uma classe de operadores do tipo parabólico
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Matemática - PPGM, Câmpus São Carlos, 18/01/2022)In this thesis we consider the non-uniqueness for a class of parabolic operators. We will prove that for certain real analytic perturbation of the Heat Operator there is a non unique solution for the Initial Value Problem. -
NPS: como esse indicador pode impactar o resultado microempresarial
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 20/04/2022)Customer success during the purchase process of a product or service has become increasingly important for the financial impact of companies, ensuring that the customer be the focus. Consequently, the entire ecosystem ... -
Influência da adição de Nb-B na microestrutura de solidificação da liga Al-0,8%Mg-0,7%Si (6201)
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEM, Câmpus São Carlos, 11/04/2022)The AA6201 alloy, widely used in the manufacturing of power cables, was modified by the addition of a Al-Nb-B master alloy in order to investigate the possible effects on the microstructure. Therefore, the Al-0.8%Mg-0.7%Si ...