Information System and Higher Education: data analysis and characterization of the “Universidade Estadual de Maringá”

[EN] This work is the result of compiling and analyzing the "database" of “Universidade Estadual de Maringá”, an institution associated with "INFOACES: System Integral de Información sobre las Instituciones de Educación Superior de América Latina", coordinated by the University of Valencia (Spain) involving 33 institutions, located in 23 different countries, including 18 in Latin America and 5 in Europe. The project is supported by the ALFA III Programme (Cooperation between Higher Education Institutions of the European Union and Latin America). The objective is to present a characterization of the “Universidade Estadual de Maringá”, regional aspects and variables related to academic staff, courses (undergraduate, specialization, master and doctorate), enrollments, campuses and scientific production[ES] Este trabajo es el resultado de la compilación y el análisis de la "base de datos" de la Universidade Estadual de Maringá, una institución asociada al "INFOACES: Sistema Integral de Información sobre las Instituciones de Educación Superior de América Latina", coordinado por la Universidad de Valencia (España). El proyecto involucra 33 instituciones ubicadas en 23 países diferentes, entre ellos 18 de América Latina y 5 en Europa. El proyecto es apoyado por el Programa ALFA III (Programa de Cooperación Regional en Educación Superior entre la Unión Europea y América Latina). El objetivo es presentar una caracterización de la Universidad Estatal de Maringá, aspectos y variables regionales relacionados con el personal académico, cursos (pregrado, especialización, maestría y doctorado), las inscripciones, los campus y de la producción científica.[PT] O presente trabalho é resultado de pesquisa tendo por base os dados da Universidade Estadual de Maringá, uma das instituições associadas ao projeto Internacional “INFOACES: Sistema Integral de Información sobre las Instituciones de Educación Superior de América Latina”, coordenado pela Universidade de Valência (Espanha), envolvendo 33 instituições associadas de 23 diferentes países, sendo 18 da América Latina e 5 da Europa, com apoio da União Europeia, por intermédio do Programa ALFA III (Programa de Cooperação entre as Instituições de Educação Superior da União Europeia e América Latina). Nesse sentido, o objetivo é apresentar uma caracterização da Universidade Estadual de Maringá, seus aspectos de pertencimento regional e variáveis relacionadas a pessoal docente (gênero e dedicação), pessoal técnico, produção científica, cursos de formação (graduação, especialização, mestrado e doutorado), matrículas (presencial e a distância), recursos de informática, infra-estrutura material (campus, edifícios e equipamentos) e orçamento financeiro. Dessa forma, procura-se argumentar sobre a necessidade da disponibilização de um Sistema de Informações, construído de acordo com a metodologia do INFOACES, com vistas à melhoria da qualidade, à tomada de decisões e à publicização de informações para a comunidade interessada e para os atores sociais (internos e externos) a respeito de uma universidade pública regional - a Universidade Estadual de Maringá.Altoé, N.; Neves De Azevedo, ML.; Portero Batilana, A.; Aráujo De Carvalho, C.; Lúcia Mesti, R. (2014). Sistema de Información y Educación Superior: análisis de datos y caracterización de la “Universidade Estadual de Maringá”. En CONFERENCIA INTERNACIONAL INFOACES. UN SISTEMA DE INFORMACIÓN PARA LAS UNIVERSIDADES LATINOAMERICANAS. LIBRO DE ACTAS. Editorial Universitat Politècnica de València. 7-10. http://hdl.handle.net/10251/85890OCS71

Determination of the growth exponent from patterns formed in granular media

Neste trabalho estudamos os padrões formados experimentalmente em sistemas granulares com simetria radial. Em especial avaliamos se o expoente de crescimento β depende da origem usada para calcular a largura da interface. Para tanto foi feito um programa em linguagem Fortran que reconhece a borda do padrão e calcula a distância de cada ponto da borda considerando três origens diferentes: (a) o ponto onde foram injetados os grãos; (b) o centro de massa do padrão; e (c) o centro de massa da borda. Com estas distâncias calculamos a rugosidade da borda do padrão. Através da evolução temporal da rugosidade determinamos o expoente β. Observamos que com a injeção de (840 ± 2) a (7260 ± 20) esferas de aço, o expoente de crescimento β é (0,38 ± 0,01), (0,38 ± 0,01) e (0,33 ± 0,03) para os casos (a), (b) e (c), respectivamente. Continuando a injeção das esferas de ação, até (12430 ± 30) esferas, o expoente de crescimento muda para (0,73 ± 0,06), (0,70 ± 0,06) e (0,64 ± 0,07) para os casos (a), (b) e (c), respectivamente. Nossos resultados mostram que o valor de β depende sim da origem considerada para o cálculo da rugosidade.In this work we studied the patterns formed experimentally in granular systems with radial symmetry. In particular we evaluated if the growth exponent β depends of the origin used to calculate the interface width. In order to do this a Fortran program was made, that recognizes the pattern border and calculates the distance of each point on the border considering three different origins: (a) the point where the grains were injected, (b) the center of mass of the pattern, and (c) the center of mass of the border. With these distances we calculated the roughness of the border of the pattern. Through the temporal evolution of the roughness the exponent β was determined. We observed that with the injection from (840 ± 2) to (7260 ± 20) steel balls, the growth exponent β is (0.38 ± 0.01), (0.38 ± 0.01) and (0.33 ± 0.03) for cases (a), (b) and (c), respectively. Continuing the injection of the steel balls, until (12430 ± 30) balls, the growth exponent changes to (0.73 ± 0.06), (0.7 ± 0.06) and (0.64 ± 0.07) for cases (a), (b) and (c), respectively. Our results show that the value of β depends of the origin considered for the calculation of the roughness.Coordenação de Aperfeiçoamento de Pessoal de Nível Superio

Vapor transport in a smectite clay: from normal to anomalous diffusion

International audienceSmectite clays are widely found on the Earth surface. They possess a connected mesoporous space in the micrometer range, and nanopores inside the mineral grains. The grains are stacks of individual 1 nm-thick clay particles (the layers) with the ability to swell by incorporating H2O molecules (or other molecules such as CO2) in-between the layers, depending on the ambiant temperature and on the relative humidity (RH) present in the mesoporous space surrounding the grain. Imposing a gradient of RH along a temperature- controlled dry sample of smectite clay, we investigate the diffusive transport of water molecules in vapor phase through the material. As water molecules diffuse through the mesoporous space, (i) some of them intercalate into the nanopores, (ii) causing the grains to swell and the separation of clay grains into particles of smaller thickness. From (ii) results a change in the geometry of the mesoporous space, with a decrease in the mesoporous volume available for vapor diffusion. These two effects (i and ii) render the transport process potentially anomalous. We monitor it using space- and time-resolved X-ray diffraction at a synchrotron source. Indeed, water absorption into the nano-layered grains changes the interlayer repetition distance (d-spacing) of the stacks, which is seen in the diffraction data. A separate calibration experiment allows mapping this monotonous evolution of d as a function of the RH. By measuring d in space and time in the transport experiments we thus record the time evolution of RH profiles along the direction of the initial RH gradient. To model the data we consider a 1D effective diffusion process described by a fractional time diffusion equation with a diffusion coefficient that depends on the RH. It is possible to rescale all RH profiles onto a single master curve as a function of (x/t)γ/2, where γ is the exponent characteristic of the fractional derivative. We observe that when the clay sample is prepared with sodium cations intercalated in the nanopores, vapor transport is normal (γ=2), while if the interlayer cation is lithium the transport is strongly subdiffusive. This is explained by the different dynamics of cation intercalation in these two clays. In both cases we also obtain the dependence of the effective diffusion coefficient on relative humidity

Continuous water adsorption states promoted by Ni2+ confined in a synthetic smectite

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Continuous water adsorption states promoted by Ni2+ confined in a synthetic smectite

The water adsorption isotherms of Ni-fluorohectorite have been obtained from the relative humidity dependence of X-ray diffraction intensities, and continuous transitions between the stable hydration states were observed. This behavior is significantly different from previous studies of Na-fluorohectorite and Li-fluorohectorite smectites. It was also observed that the environmental history of the clay mineral samples is important for the behavior displayed by these isotherms. In addition, based on thermogravimetric and differential scanning calorimetry measurements, it was observed that a complete Ni-fluorohectorite dehydrated state can only be reached at long times (several hours) at 70 °C, or at shorter times (minutes) above 150 °C. Our observations are consistent with the existence of various forms of Ni2+–H2O complexes in Ni-fluorohectorite, and we suggest that the present results can be extended to other smectites with transition metals as interlayer charge compensating cations, and consequently have significant practical consequences in materials science and other areas