Centro de Ciências Exatas e de Tecnologia - CCET: Recent submissions
Itens para a visualização no momento 361-380 of 7399
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Estudo comparativo dos métodos de produção de hidrogênio e carbono sólido usando a reação de decomposição do metano
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 22/01/2024)Currently, one of the main routes for obtaining hydrogen is the steam reforming of methane, it is known that the global demand for hydrogen has intensified in recent years, being a potential candidate for the clean and ... -
Uma abordagem estatística para a análise dos resultados das eleições presidenciais
(Universidade Federal de São Carlos, UFSCar, Programa Interinstitucional de Pós-Graduação em Estatística - PIPGEs, Câmpus São Carlos, 15/01/2024)Multiparty data has characteristics that make it compositional data such as a constant sum of components and a limited space known as simplex. Thus, the purpose of the work is to develop a methodology to analyze multi-party ... -
Modelo de classificação para dados desbalanceados: método SMOTE e variantes
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 29/01/2024)Often, in classification models, we encounter databases that have highly imbalanced classes, such as: rare disease diagnostic data, manufacturing defects, fraudulent transactions, etc. Training a model on a dataset with ... -
Dimensionamento de um evaporador de vinhaça do tipo névoa turbulenta
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 22/01/2024)The study analyses evaporation as a sustainable strategy for vinasse disposal, a subproduct of sugarcane ethanol production. The research aims to establish the sizing of a turbulent mist evaporator with a water evaporation ... -
Modelagem de predição de crimes na região metropolitana de São Paulo
(Universidade Federal de São Carlos, UFSCar, Programa Interinstitucional de Pós-Graduação em Estatística - PIPGEs, Câmpus São Carlos, 13/12/2023)The issue of public security is a challenge for Brazilian society, and crime is a major concern for the most populous state in the country, São Paulo. It is always desirable for the public administration to model and predict ... -
Estudo da variação da entropia de Shannon no jogo de xadrez a partir dos conceitos de teoria da informação
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 15/02/2024)Information Theory is a branch of science that quantifies information and its communication processes, and has at its core the reformulation of the fundamental concept of entropy. Shannon's entropy reflects the measure of ... -
Negrifeminicídio: O feminicídio de mulheres negras no estado de São Paulo
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 20/01/0022)Violence against women and racism are extremely important issues that must be addressed with great care and seriousness. In this work, they will be presented together: the violent deaths of white and black women and their ... -
Análise e previsão de séries temporais via Facebook Prophet
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 29/01/2024)Forecasting is an estimate or projection of what may happen in the future based on information and data available from the past and present. In other words, it is an attempt to make an informed guess about what is likely ... -
Long and short por cointegração aplicado ao mercado acionário brasileiro
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 06/09/2023)In this article, we conduct a detailed analysis of the long and short investment strategy with cointegration in the Brazilian stock market. We explore the correlation between pairs of stocks and propose a trading approach ... -
Utilização de algoritmos de classificação para diagnóstico de diabetes
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 15/02/2024)The undergraduate thesis consists of the study of binary classification algorithms for diagnosing diabetes based on clinical data and physical activity data. For this purpose, we will accomplish a statistical and conceptual ... -
Estudo da prevalência de transtornos mentais comuns via métodos de classificação
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 16/02/2024)The present undergraduate thesis focuses on the study of the association between specific variables and the diagnosis of common mental disorders. To achieve this goal, we examined classification methods, namely decision ... -
Estudo da influência de baixos teores de platina em catalisadores Ni/γ-Al2O3 nos processos de reforma a vapor, oxidação parcial e reforma oxidativa do metano.
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Engenharia Química - PPGEQ, Câmpus São Carlos, 22/08/2002)The effect of platinum addition in low contents (0.1 and 0.3 % wt.) in nickel supported γ−alumina catalyst (15% Ni wt.) has been investigated. The samples were prepared by successive wet impregnations of metal ions over ... -
Reforma autotérmica do metano: estudo do Processo e de catalisadores
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Engenharia Química - PPGEQ, Câmpus São Carlos, 07/05/2005)The study of the autothermal reforming of methane over Ni/γ-Al2O3 catalyst, promoted with noble metals was the objective of this work. In the first part, the stability to coke deposition of the autothermal reforming was ... -
Investigação da influência da temperatura sobre a resistência mecânica, qualidade superficial e dimensional de peças impressas pela técnica FPM
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Engenharia Mecânica - PPGEMec, Câmpus São Carlos, 22/09/2022)Additive manufacturing has become a common practice across various industries due to its ability to efficiently produce complex parts on low and mediun scale. Among the various adopted techniques, the Fused Pellet Modeling ... -
Estimação, seleção e predição de redes de neurônios estocásticos com memória de alcance variável
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 02/02/2024)The nervous system is subjected to various sources of noise. Neuronal activity recordings reveal that part of this noise is due to electrical firings occurring spontaneously and irregularly, with variations even when the ... -
Seleção estatística de árvores de contexto
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 22/01/2024)Context trees are models that parsimoniously generalize Markovian models. These models were introduced by Jorma Rissanen in 1983, as an efficient tool in Information Theory. Since then, these models have been widely used ... -
Classificação binária de dados financeiros em problemas com classes desbalanceadas
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 29/01/2024)In order to mitigate the risks and uncertainties associated with credit granting, financial institutions are constantly exploring methods to enhance the credit evaluation system. In the same context, the growth in credit ... -
Panorama sobre a análise das propriedades mecânicas de pellets de diferentes biomassas
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 22/02/2024)Biomass is considered a more sustainable energy production option than fossil fuels. However, although it has a lot of potential, its intrinsic characteristics, such as its low energy density, make its widespread use more ... -
Análise sobre o papel da biomassa na economia circular do brasil
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 22/02/2024)This work investigates the importance of biomass in Brazil's circular economy, addressing the context of the circular economy in some regions of the world and the relationship with biomass. The study also analyzes public ... -
Simulação da secagem de bagaço de laranja em leito de jorro por um modelo em cascata usando softwares gratuitos
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 22/02/2024)Due to the increasing consumption and production of orange derivatives, a large amount of biomass, generically known as bagasse, is generated. This biomass has potential for several applications, such as use for animal ...