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Funções Lq ultradiferenciáveis globais e aplicações
(Universidade Federal de São Carlos, 2019-11-20) Rampazo, Patrícia Yukari Sato; Hoepfner, Gustavo; https://lattes.cnpq.br/7742503790793940; https://lattes.cnpq.br/9047808021065602
The class of global Gevrey functions was introduced recently by Z. Adwan, G. Hoepfner and A. Raich, the elements in these spaces are defined in terms of its derivatives with estimates that depend on sequences. It is know that in the local case ultradifferentiable functions defined by sequences and weight functions are not always the same. In this work we shall introduce the class of global ultradifferentiable functions according with weight functions, making a study from the point of view of functional analysis. It is possible to characterize these classes of functions by decaying of their FBI transform, that is, there exist a version of Paley-Wiener theorem. Our techniques, when adapted to the local case generalize recent results such as the existence of almost analytic extensions. As application, we introduce global ultradifferentiable vectors and show the validity of the global Kotake-Narasimhan theorem in this setting.
Sensor óptico baseado em fibra óptica de núcleo vazado e curvatura negativa para detecção simultânea de metano, monóxido de carbono e monóxido de nitrogênio
(Universidade Federal de São Carlos, 2019-11-20) Silva, Artur Araujo; De Francisco, Carlos Alberto; https://lattes.cnpq.br/1246572405382250; https://lattes.cnpq.br/4131207039174093
This work demonstrates the potential for application of negative curvature hollow core fibers (HC-NCF) as efficient sensors to monitor three gases simultaneously, methane (CH4), carbon monoxide (CO) and nitrogen monoxide (NO). With the insertion of lateral holes in these fibers, the ambient gas can enter the hollow core, causing the light that propagates in the fiber to interact with this gas. This interaction between light and gas, in spectral regions where the gases present high absorption, allows the monitoring of low concentrations of gases present in the environment, by attenuating the light output. The results of the simulations show a linear behavior of the loss as a function of the gas concentration for the three gases of interest. This linearity between the propagation losses and the variation of the concentrations of gases in the environment can promote its application in the area of health and the environment, to monitor low concentrations of gases with high speed and precision.
Panorama geral do transporte público e estudo de viabilidade técnica de implantação de corredores de BRT na cidade de Marília-SP
(Universidade Federal de São Carlos, 2019-11-20) Silva, Gabriel Batista Fernandes; Hirosue, Fernando Hideki; https://lattes.cnpq.br/4091598921285700; https://lattes.cnpq.br/3326018548096238
This paper characterizes the public transport system in the city of Marília - SP, with an analysis of its service's quality, and presents an intervention proposal, with the implementation of a Bus Rapid Transit - BRT system in an area where a currently disabled railroad, that crosses the city, is located. The public transport in the city is operated by two companies, which operate in different regions and are represented by an association. A technical visit occurred at one of the concessionaires, and their organization and procedures were observed. The service's quality analysis was made based on technical literature and considered the main indicators of transport quality studied by Ferraz and Torres (2004): accessibility, attendance frequency, time of travel, reliability, safety, bus characteristics, bus stops, information system, connectivity and road conditions. Strengths of service’s quality are accessibility throughout the city, the information system and the universally accessible fleet. The existence of the Terminal is also a strength of the system. The main public transport routes were analyzed and the need for prioritization in the proposed corridor was determined according to the number of buses passing through the area, which was also evaluated based on its characteristics and physical capacity to receive the implementation of a busway. Currently, the corridor has the potential to carry around 35,140 passengers daily.