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Processamento da rede neocognitron para reconhecimento facial em ambiente de alto desempenho GPU
(Universidade Federal de São Carlos, 2007-08-30) Silva, Gustavo Poli Lameirão da; Saito, José Hiroki; https://lattes.cnpq.br/7065615446493390; https://lattes.cnpq.br/2857602364684106
This work presents an implementation of the Neocognitron Neural Network, using a high performance computing architecture based on GPU (Graphics Processing Unit). Neocognitron is an artificial neural network, proposed by Fukushima and collaborators, constituted of several hierarchical stages of neuron layers, organized in two-dimensional matrices called cellular plains. For the high performance computation of Face Recognition application using Neocognitron it was used CUDA (Compute Unified Device Architecture) as API (Application Programming Interface) between the CPU and the GPU, from GeForce 8800 GTX of NVIDIA company, with 128 ALU s. As face image databases it was used a face database created at UFSCar, and the CMU-PIE (Carnegie Melon University - Pose, Illumination, and Expression) database. The load balancing through the parallel processing architecture was obtained by means of the distributed processing of the cellular connections as threads organized in blocks, following the CUDA philosophy of development. The results showed the viability of this type of device as a massively parallel data processing tool, and that smaller the granularity of the parallel processing, and the independence of the processing, better is its performance.
Políticas públicas, educação, juventude e violência na escola: quais as dinâmicas entre os diversos atores envolvidos?
(Universidade Federal de São Carlos, 2007-08-30) Silva, Carla Regina; Lopes, Roseli Esquerdo; https://lattes.cnpq.br/1507752191797249; https://lattes.cnpq.br/6417501858864106
The present relates to Violence in School according three aspects: youth of popular urban groups; violence in school and education particularly referring to a medium cycle and public school. As effect of process of social fragmentation and economic and social exclusion, it has arisen practices of violence as a social rule of wide groups present in multiple dimensions of human relations and in living together. The relationship between education and processes of violence was connected in every historical constitution of educational institutions and remains until the contemporary society, despite the conceptual transformations that supported its practices through this route. Became evident the vulnerability of youth, mainly of popular groups, given by several numbers related to violence in Country in a context, in which the public politic oriented toward to youth were recognized insufficient, fragmented, or not adequate to accomplish the requirements of that groups, according a point of view that effective them as citizens with full rights. The school has been an important achievement for poor young and teenagers in Brazil, although they have experienced a process of a widening of Medium Cycle full of difficulties and problems, such as minimum standards of quality and completeness in adequate age. Therefore, must be highlighted the importance of commitment of this study deepen and bringing to the context the phenomena of violence in school, related to the political, economical, cultural, and social conditions related to contemporarity, so that it is a urgent matter that blocks the building of democratic process in schools in daily basis. Therefore aiming getting the practices of violence in school environment evaluating the actions and situations experimented relating to this issue by different players in public schools have been worked in a empirical field that aimed five public schools in São Carlos, located in a central region of town. It s been raised related to the issue of school violence, their thoughts regarding school future perspectives of the young people e about school violence and which their way of expression and how has been their struggled. In this sense it was used applications with open and closed questions specific for each category of students and accomplished several individual interviews with employees management teachers parents and students. In the second run of search it was accomplished workshop in which has been deal with issues related to school dynamics and the expression of violence in a qualitative approach of the theme. The results were evaluated, in quantity and quality, using graphic and photographic material, as long the log and the analysis of content of the speech of the players involved. Among analysis of the data gathered, it has been refined the strategies of social inclusion and exclusion process reproduced by school, and the dynamics of school agents related to the violence processes, their reproduction and struggling. In view of density and scope of violence in present days, the school suffers internal and external factors, that are present in daily basis, and face the tough task of conciliating repressive and punishing methods with the challenge of building democratic and participative practices.
Análise da estabilidade de estruturas pré-moldadas de concreto: influência das ligações semi-rígidas
(Universidade Federal de São Carlos, 2007-08-30) Jeremias Júnior, Antônio Carlos; Ferreira, Marcelo de Araújo; https://lattes.cnpq.br/4199122391532470; https://lattes.cnpq.br/8002545890872886
This research comprehends a study of the analysis procedures of the global stability in precast concrete structures, considering the effect of the semi-rigid connections. A Look over in the standards and directives of the precast structures project was necessary specifically on the procedures of global stability verification, recommended by the NBR 6118. Besides, it was looked to identify particular situations where the analysis of the precast concrete structures differentiates of the analysis of the structures cast in place. Such discussion is relevant at the moment of the publication of the new NBR 9062, where the effect of the behavior of the beam-to-column connections must be considered in the analysis of the global stability. In the carried through studies, the frame action proportionate by the bending moment resistant beam-to-column connections is a efficient method of bracing of the structure since that the interdependence of some factors is analyzed as the number of the floors, the stiffness and the cracking of columns and the beams and the fixity factor αR. Finally, examples of numerical application are presented with intention to guide the designer of precast concrete structures in the analysis of structures with semi-rigid connections.
Nação e masculinidade em Grande Sertão: Veredas
(Universidade Federal de São Carlos, 2007-08-30) Almeida, Emerson Rodrigo Ferreira de; Escudeiro, Richard Miskolci; https://lattes.cnpq.br/1623888309974862; https://lattes.cnpq.br/6252186254822704
Determinação e fracionamento de bário em castanha-do- Pará
(Universidade Federal de São Carlos, 2007-08-30) Gonçalves, Alexandra Mary; Nóbrega, Joaquim de Araújo; https://lattes.cnpq.br/8833989058164529; https://lattes.cnpq.br/1292148611034352
In this work it was studied the determination and fractionation of barium in Brazil nuts employing several strategies for sample preparation and spectroanalytical techniques, i.e. graphite furnace atomic absorption spectrometry (GFAAS) and inductively coupled plasma optical emission spectrometry with axial view (ICP OES). Brazil nuts is a widely consummed food due to its nutritional value and good taste. The chemical analysis of Brazil nuts is not trivial due to its complex matrix. The fractionation of barium in Brazil nuts was studied owing to the toxicity of this element and the strong correlation between chemical form and absorption. The total content of barium varied from 860 to 2084 mg/kg. Sequential extractions were performed based on solubility in different media and also lipids, proteins and low molecular weight fractions (LMW). Barium was determined in all extracts by ICP OES. The highest contents of barium were determined in the LMW and insoluble fractions with 778 to 1606 and 551 to 1520 mg/kg, respectively. As expected, these results indicate the unavailability of this element in this food for humans. Based on the contents of barium and sulfur in different fractions and stoichiometric calculations it was possible to infer that barium occurs in the BaSO4 form. The presence of this chemical form was also confirmed by thermogravimetric experiments.