Modelagem de informações para a fase de projeto informacional de produtos

Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Mecânica

Macro- and microstructural descriptions of the zebrafish (Danio rerio) liver

The liver is an essential metabolically active organ, responsible for many vital life functions such as metabolism, synthesis, and storage. This study describes the macroscopic and microscopic zebrafish liver and its temporal changes during a period of 13 weeks. Forty-six adult zebrafish were used (46), of which 27 were females and were 19 males. Seven fish were euthanized initially for macroscopic evaluation and 3 fish were euthanized weekly for 13 weeks for microscopic evaluation. Routine histological technique was performed; the slides were stained with haematoxylin/eosin and periodic acid-Schiff. The volumetric (Vv(h)) and numerical (Nv(h)) densities of hepatocytes and vacuolation intensity were determined weekly. The liver was located in the coelomic cavity ventrally to the swim bladder, slightly brownish and divided into 3 hepatic lobes. Microscopically, it consisted of hepatocytes forming a muralium duplex around the sinusoids. The staining of the cytoplasm of hepatocytes was more eosinophilic and more basophilic in males and females, respectively. There was no formation of portal triads and phagocytic cells. The gallbladder had transitional epithelium, and the bile ducts had simple cuboidal epithelium. The volume and numerical density of hepatocytes during the 13 weeks was not statistically different, but these parameters displayed a positive correlation. The vacuolation was due to the presence of glycogen. The zebrafish liver has macro and micro structural particular features while, quantitatively, the volume and number of hepatocytes showed great capacity to respond to the physiological needs of the animal at the time

Desenvolvimento e Uso de Uma Plataforma Digital Gamificada no Curso de Medicina em uma Universidade Pública do Interior de Minas Gerais

Frente a um contexto com amplas possibilidades de integração das mídias em vários aspectos nos espaços individuais, sociais e profissionais, as instituições de ensino precisam repensar os compromissos e propostas pedagógicas. Quando pedagogicamente planejada, a utilização de dispositivos digitais móveis em processos de ensino e aprendizagem pode potencializar as práticas pedagógicas. No entanto, não deixa de ser um grande desafio desenvolver metodologias e/ou recursos que representem melhorias nos resultados esperados, em mudanças na educação. Procuramos ponderar neste trabalho aspectos relacionados a pressupostos que tratam da utilização de tecnologias digitais na educação, considerando as transformações vivenciadas com base em estudos da cibercultura, de teorias voltadas para a gamificação, além de abordagens acerca das mudanças realizadas na educação médica nos últimos anos. Apresentamos neste trabalho os resultados parciais de uma pesquisa de iniciação científica, ainda em andamento, que trata do desenvolvimento e utilização de uma plataforma digital gamificada voltada para o processo de ensino e aprendizagem, no curso de medicina, em uma universidade pública no interior de Minas Gerais. A aplicação do teste de avaliação inicial possibilitou a validação da plataforma, tendo em vista que sua usabilidade foi considerada positiva tanto pelos alunos quanto pelos professores

A reversible system based on hybrid toggle radius-4 cellular automata and its application as a block cipher

The dynamical system described herein uses a hybrid cellular automata (CA) mechanism to attain reversibility, and this approach is adapted to create a novel block cipher algorithm called HCA. CA are widely used for modeling complex systems and employ an inherently parallel model. Therefore, applications derived from CA have a tendency to fit very well in the current computational paradigm where scalability and multi-threading potential are quite desirable characteristics. HCA model has recently received a patent by the Brazilian agency INPI. Several evaluations and analyses performed on the model are presented here, such as theoretical discussions related to its reversibility and an analysis based on graph theory, which reduces HCA security to the well-known Hamiltonian cycle problem that belongs to the NP-complete class. Finally, the cryptographic robustness of HCA is empirically evaluated through several tests, including avalanche property compliance and the NIST randomness suite.Comment: 34 pages, 12 figure

Desenvolvimento e Uso de Uma Plataforma Digital Gamificada no Curso de Medicina em uma Universidade Pública do Interior de Minas Gerais

Frente a um contexto com amplas possibilidades de integração das mídias em vários aspectos nos espaços individuais, sociais e profissionais, as instituições de ensino precisam repensar os compromissos e propostas pedagógicas. Quando pedagogicamente planejada, a utilização de dispositivos digitais móveis em processos de ensino e aprendizagem pode potencializar as práticas pedagógicas. No entanto, não deixa de ser um grande desafio desenvolver metodologias e/ou recursos que representem melhorias nos resultados esperados, em mudanças na educação. Procuramos ponderar neste trabalho aspectos relacionados a pressupostos que tratam da utilização de tecnologias digitais na educação, considerando as transformações vivenciadas com base em estudos da cibercultura, de teorias voltadas para a gamificação, além de abordagens acerca das mudanças realizadas na educação médica nos últimos anos. Apresentamos neste trabalho os resultados parciais de uma pesquisa de iniciação científica, ainda em andamento, que trata do desenvolvimento e utilização de uma plataforma digital gamificada voltada para o processo de ensino e aprendizagem, no curso de medicina, em uma universidade pública no interior de Minas Gerais. A aplicação do teste de avaliação inicial possibilitou a validação da plataforma, tendo em vista que sua usabilidade foi considerada positiva tanto pelos alunos quanto pelos professores

Turbulence Hierarchy in a Random Fibre Laser

Turbulence is a challenging feature common to a wide range of complex phenomena. Random fibre lasers are a special class of lasers in which the feedback arises from multiple scattering in a one-dimensional disordered cavity-less medium. Here, we report on statistical signatures of turbulence in the distribution of intensity fluctuations in a continuous-wave-pumped erbium-based random fibre laser, with random Bragg grating scatterers. The distribution of intensity fluctuations in an extensive data set exhibits three qualitatively distinct behaviours: a Gaussian regime below threshold, a mixture of two distributions with exponentially decaying tails near the threshold, and a mixture of distributions with stretched-exponential tails above threshold. All distributions are well described by a hierarchical stochastic model that incorporates Kolmogorov's theory of turbulence, which includes energy cascade and the intermittence phenomenon. Our findings have implications for explaining the remarkably challenging turbulent behaviour in photonics, using a random fibre laser as the experimental platform.Comment: 9 pages, 5 figure

Environmental impact monitoring of a minero-chemical complex in Catalão urban area of PTS, PM10 and PM2.5 by EDX characterization

Depending on its nature, particulate matter has very different size, composition and morphology. By the combination of these criteria it is possible to distinguish the emitting sources (primary or secondary). The shape and the dimension of the particles have also a direct interaction with the risk assessment for human health. The minero-chemical complex consists of phosphate fertilizer manufacturing, rock phosphate and niobium mining open pits and it is located northeast of the urban area of the city. Environmental issues associated with it include the following: fugitive emissions which are primarily associated with operational leaks from tubing, valves, connections, flanges, packings, open ended lines, floating roof storage tank and pump seals, gas conveyance systems, compressor seals, pressure relief valves, tanks or open its/containments, and loading and unloading operations of products. Furthermore the area of study is characterized by a predominantly northeast winds direction. The monitoring was performed weekly particulates samples were collected in two seasonal episodes at one representative places in the urban area of Catalao (a Brazilian city located in Goias state) in the period from August to November of 2014. Suspended particles were sampled on pure fiberglass filters by using a High Volume air sampler and were analyzed via an energy dispersive X-ray microanalysis system (EDX). The airborne particulate matter was characterized from a physico-chemical point of view to supply information on the particle composition and the compounds carried on their surfaces. The microanalysis enables identification of several groups of particles such as: soot, Si-rich, metal-rich and biological particules. These results may help in controlling and preventing fugitive emissions in atmospheric air.Depending on its nature, particulate matter has very different size, composition and morphology. By the combination of these criteria it is possible to distinguish the emitting sources (primary or secondary). The shape and the dimension of the particles h4319091914CNPQ - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOFAPEG - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE GOIÁSsem informaçãosem informaçãoFinancial support and scholarships from the Brazilian funding agencies CNPq, FAPEG and Environment Office City of Catalão, City Council Environmental Protection of Catalão and Public Ministry of Goiás State are gratefully acknowledged

Ação e criação na interface das artes e da saúde

This article presents the experience of constituting and establishing the Laboratory of Study and Research in Arts, Body and Occupational Therapy and the Artistic Composition and Occupational Therapy Permanent Program of USP, Brazil. To outline a scenario of teaching and researching activities and those involving the community composing a new field of occupational therapy practices focused on the complex demands of the population assisted in this area and on increasing their socio-cultural participation. This group have been done qualitative research conducted through an action-research methodology to build up local awareness of occupational therapy due to the importance of creative actions and clinical and cultural-artistic references. The actions taken have broadened the access of the population assisted to artistic activities and cultural experiences standing for strategies to build life projects, ways of participating in community life, networking and making subjective exchanges, which have resulted in unexpected production of social value.Este artigo apresenta a experiência de constituição e implantação do Laboratório de Estudos e Pesquisa Arte e Corpo em Terapia Ocupacional e do Programa Permanente Composições Artísticas e Terapia Ocupacional na Universidade de São Paulo, Brasil. Propõe-se a traçar um panorama das atividades de ensino, pesquisa e extensão à comunidade que configuram um novo campo de práticas de terapia ocupacional voltadas às complexas demandas da população atendida nesta área e à ampliação de sua participação sociocultural. Tem realizado pesquisas qualitativas através da metodologia da pesquisa-ação para a construção de um conhecimento local em terapia ocupacional orientado pela importância das ações criativas e por referenciais clínicos e artístico-culturais. As ações desenvolvidas ampliaram o acesso da população atendida às atividades artísticas e às experiências culturais, constituindo-se em estratégias de construção de projetos de vida, de formas de participação, de convivência e de trocas subjetivas, configurando modos inusitados de produção de valor social