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Studies in particle astrophysics with the ANITA experiment
Studies in particle astrophysics with the ANITA experiment
The Antarctic Impulsive Transient Antenna (ANITA) is a NASA long-duration balloon experiment with the primary goal of detecting ultra-high-energy (\(> 10^{18}\)eV) neutrinos via the Askaryan Effect. In the fourth ANITA mission, the Tunable Universal Filter Frontend (TUFF) boards were deployed for mitigation of narrow-band, anthropogenic noise with tunable, switchable notch filters. They contributed to a factor of 2.8 higher total instrument livetime in ANITA-4 compared to ANITA-3. A search for a diffuse flux of ultra-high-energy neutrinos was conducted using the data collected during the ANITA-3 flight with a new approach where the Antarctic ice area is sectioned off into bins and a search is performed with different thresholds in different bins. The binned analysis methods were extended to the development of a search for neutrinos from Gamma Ray Bursts, implementing constraints in time, and for the first time, in direction. Lower analysis thresholds were achieved in a feasibility search even when extending the search to include longer afterglow periods. Authored with osudiss-2.cls (v0.9.1)
Oindree Banerjee
Qualificação - Reconhecimento de Cenários baseado nas Localizações dos Fornecedores do Governo Federal
Qualificação - Reconhecimento de Cenários baseado nas Localizações dos Fornecedores do Governo Federal
In most corruption scandals, the use of front companies for money laundering is almost ubiquitous. This work proposes to apply image classification to detect such organizations, through the use of Convolutional Neural Networks (CNN), namely the AlexNet architecture. The images are obtained by address search in Google Street View API, and the resulting classification will be further used along with other features to detect front com- panies in order to help the auditors from the Ministry of Transparency and Office of the Comptroller General (CGU, in Portuguese). To this moment, we applied classification to almost 15 thousand suppliers scenes with active contracts with the Brazilian Government until September 2016, obtained through data matching between the Government Purchases database and the Brazilian Federal Revenue Office database (more recent scenes should be added as this work progresses). Preliminary results with a pre-trained AlexNet CNN show the need for developing new scene classes more suited to the Brazilian context. In order to do this, we propose to apply clustering algorithms in features extracted from the last fully-connected layer of this net. The classes obtained will be used to fine-tune the AlexNet CNN for future classification, through the use of training from scratch or fine tuning techniques.
Rodrigo Peres Ferreira
Estudo da Performance de Algoritmos de Criptografia em Dispositivos de Internet das Coisas
Estudo da Performance de Algoritmos de Criptografia em Dispositivos de Internet das Coisas
Este trabalho apresenta o estudo da performance de algoritmos de criptografia em plataformas de Internet das Coisas. O presente trabalho tem como objetivo estudar o funcionamento de algoritmo de criptografia simétrico AES e assimétrico RSA e aplicá-los a ambientes de Internet das Coisas, para que se possa avaliar o impacto na performance dos mesmos. Assim como, aplicar algoritmos de criptografia na camada de rede, na tentativa de garantir a segurança dos dados trocados em um ambiente de Internet das Coisas. Através do estudo, foi verificado que algoritmos assimétricos possuem maior impacto na performance do dispositivo, pois se baseam em cálculos complexos. Com isso, foram escolhidas plataformas utilizadas em prototipagem para mensurar o impacto no processamento. Ao realizar os testes, foi possível provar o impacto na rede e ajudar, através dos dados coletados, a escolher o algoritmo que melhor se adequa ao ambiente de Internet das Coisas, assim como, às necessidades de segurança dos mesmos. Created with the UNIFOR dissertation template
Amanda
Flex shape gripper
Flex shape gripper
Este trabajo presenta la aplicación de un conjunto de articulos con propias teorías de los robots manipuladores y el modelamiento de pinzas. Para ello el brazo humano se modela como un robot manipulador redundante. En particular se aplica el concepto de índices de desempeño para predecir posturas óptimas del brazo durante la realización de tareas. En el estudio se incluyen tanto estructuras estáticas, como tambien los analisis de estabilidad del brazo y los materiales para su respectiva realizacion. This work presents the application of a set of articles with the own theories of the manipulative robots and the modeling of tweezers. For this, the bearing is modeled as a redundant manipulator robot. In particular, the concept of performance indices is applied to predict the optimal postures of the task during the performance of tasks. The study includes both static structures, as well as safety management analyzes and materials for their respective realization.
Alex Villarroel Coca
Tesi di Laurea - Calcestruzzo Fibro-Rinforzato ad Alta Prestazione (HPFRC) per il Rinforzo Strutturale
Tesi di Laurea - Calcestruzzo Fibro-Rinforzato ad Alta Prestazione (HPFRC) per il Rinforzo Strutturale
Negli ultimi anni l’attenzione verso il restauro e il rinforzo di costruzioni esistenti in calcestruzzo armato è gradualmente incrementata, specialmente per l’esistenza di numerose strutture edificate secondo norme superate che di conseguenza non rispettano i requisiti previsti dalle normative attuali. Al fine di aumentare la vita utile delle costruzioni o per effettuare adeguamenti sismici, ripristini delle capacità portanti o anche a seguito di incrementi dei sovraccarichi, diventa fondamentale l’aumento delle capacità portanti di strutture esistenti, con specifico riferimento agli edifici costruiti prima degli anni 60’ del ventesimo secolo. Le consuete tecniche di rinforzo sono caratterizzate dall’impiego di incamiciature in calce- struzzo armato con spessori elevati, che causano un eccessivo aumento nelle dimensioni delle costruzioni. È stata studiata l’eventualità di poter moderare apprezzabilmente lo spessore di que- sto tipo di rinforzo attraverso l’uso di incamiciature realizzate con calcestruzzi fibro-rinforzati ad elevate prestazioni (HPFRC - High Performance Fibre Reinforced Concrete). Secondo indagini diagnostiche compiute su numerosi edifici, si è notato che in passato si siano spesso utilizzati calcestruzzi di scarseggiante qualità e oltre ad esservi problemi legati alla necessità di miglioramento o adeguamento sismico, vi è l’esigenza di provvedere ad un significativo incremento della capacità portante nei confronti dei carichi gravitazionali. Questa tesi focalizza l’attenzione sull'incremento di resistenza su elementi in calcestruzzo armato che presentano una bassa percentuale di armatura o armature a taglio inadeguate, utilizzando incamiciature con calcestruzzo fibro-rinforzato ad alta prestazione di ridotti spessori.
Andi Ferhati
Relatório de Estágio - Wellington Sales Eugênio Santos
Relatório de Estágio - Wellington Sales Eugênio Santos
Relatório de estágio desenvolvido para a obtenção do título de Bacharel em Ciência da Computação no Instituto de Computação na Universidade Federal de Mato Grosso.
Wellington Sales
Graduation Thesis - High Performance Fibre-Reinforced Concrete (HPFRC) for Structural Strengthening
Graduation Thesis - High Performance Fibre-Reinforced Concrete (HPFRC) for Structural Strengthening
In recent years the attention towards the restoration and strengthening of existing buildings built with reinforced concrete has gradually increased, especially because of the existence of numerous structures built according to outdated standards that consequently do not respect the requirements under current regulations. In order to increase the useful life of buildings or to make seismic adjustments, restoration of the bearing capacities or also as a result of increases in overloads, the increase of the carrying capacity of existing structures becomes fundamental, with specific reference to buildings built before the 60s of the twentieth century. The usual strengthening techniques are characterized by the use of thick reinforced concrete jackets, which cause an excessive increase in the dimensions of the buildings. It was studied the possibility of being able to moderate appreciably the thickness of this type of strengthening through the use of jackets made with High Performance Fibre-Reinforced Concrete (HPFRC). According to diagnostic investigations carried out on many buildings, it was noticed that in the past it was often used scarce quality concrete and in addition to problems related to the need for seismic improvement or adaptation, there is a need to provide a significant increase in the bearing capacity of the gravitational loads. This thesis focuses on the increase of resistance on reinforced concrete elements that have a low percentage of reinforcement or inadequate shear reinforcement, using High Performance Fibre-Reinforced Concrete jackets of reduced thickness.
Andi Ferhati
Reconocimiento de objetos y obtención de su posición
Reconocimiento de objetos y obtención de su posición
Este proyecto se ha desarrollado con el objetivo principal de dotar a Shelly, el robot asistencial de RoboLab, de un sistema de reconocimiento y localizacio ́n de objetos en el espacio.
Iván Barbecho Delgado
Kit de Automa¸c˜ao de Janelas
Kit de Automa¸c˜ao de Janelas
O conceito de automação residencial é definido como o conjunto de serviços proporcionados por sistemas tecnológicos integrados, sendo a melhor maneira de satisfazer as necessidades básicas de segurança, comunicação, gestão energética e conforto de uma habitação. Seguindo essa concepção, surgiu-se a ideia da criação de um Kit automatizado para janelas utilizando a plataforma Arduíno, visando a solução de problemas do dia a dia como o transtorno causado pela chuva e principalmente, gerando praticidade e comodidade para os cidadãos.
Jakyson Dias

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