39,964 research outputs found

    El control interno y sus restricciones

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    Pese a que el control interno ha existido desde siempre, inicialmente como una práctica extrema de supervisión, castigo o responsabilidad, se reglamenta a partir de la Constitución Política de Colombia de 1991 en su Artículo 209 que reza: La función administrativa está al servicio de los intereses generales y se desarrolla con fundamento en los principios de igualdad, moralidad, eficacia, economía, celeridad, imparcialidad y publicidad, mediante la descentralización, la delegación y la desconcentración de funciones. Las autoridades administrativas deben coordinar sus actuaciones para el adecuado cumplimiento de los fines del Estado. La administración pública, en todos sus órdenes, tendrá un control interno que se ejercerá en los términos que señale la ley

    Determination of the physical parameters controlling the photorefractive effect in KTa1-xNbx O3:Cu,V

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    We report photorefractive, absorption, and photoconductivity measurements made on a KTa1-xNbxO3:CuY sample after a series of reduction and oxidation treatments. All relevant physical parameters that enter into the Kukhtarev model of the photorefractive effect are determined. Photorefractive measurements are compared with those expected from theory. The oxidation-reduction process is modeled, which permits us to determine the heat treatment that is necessary to produce a given index change and response time. We discuss approaches to optimization of the photorefractive sensitivity

    Solving the Boltzmann Equation on GPU

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    We show how to accelerate the direct solution of the Boltzmann equation using Graphics Processing Units (GPUs). In order to fully exploit the computational power of the GPU, we choose a method of solution which combines a finite difference discretization of the free-streaming term with a Monte Carlo evaluation of the collision integral. The efficiency of the code is demonstrated by solving the two-dimensional driven cavity flow. Computational results show that it is possible to cut down the computing time of the sequential code of two order of magnitudes. This makes the proposed method of solution a viable alternative to particle simulations for studying unsteady low Mach number flows.Comment: 18 pages, 3 pseudo-codes, 6 figures, 1 tabl

    Di Benedetto, Antonio. 2016. Escritos periodísticos. Investigación, selec., pról. y notas Liliana Reales. Buenos Aires: Adriana Hidalgo Editora. 594 pp.

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    Fil: Granata, Gladys. Universidad Nacional de Cuy

    Un texto inédito de Agustín Alvarez

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    Fil: Ramaglia, Dante. Universidad Nacional de Cuy

    Indigenous Community

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    Postcard from Linnaea Funk, during the Linfield College Semester Abroad Program at the Universidad San Francisco de Quito in Ecuado
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