37 research outputs found

    Aplicación web basada en el patrón MVC para mejorar la gestión tributaria de la Municipalidad Distrital de Guadalupito, La Libertad

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    “APLICACIÓN WEB BASADA EN EL PATRÓN MVC PARA MEJORAR LA GESTIÓN TRIBUTARIA DE LA MUNICIPALIDAD DISTRITAL DE GUADALUPITO, LA LIBERTAD” Las aplicaciones web no requieren de una instalación en la computadora del usuario, la actualización es automática, y se puede utilizar en diferentes dispositivos. Se tiene como objetivo mejorar significativamente la gestión tributaria de la Municipalidad Distrital de Guadalupito con el desarrollo de una aplicación web, así como reducir el tiempo en la búsqueda de información de los contribuyentes. El desarrollo del proyecto se basa en la metodología RUP, el cual se ha desarrollado desde la fase inicio hasta la transición, con los puntos más necesarios a considerarse. Finalmente, se concluye que la aplicación web, en la Municipalidad Distrital de Guadalupito, influye en gran escala, puesto que permite reducir el tiempo en la búsqueda de información de los contribuyentes

    Review and suggestions for upgrading StrandNet as a key element of the Reef 2050 Integrated Monitoring and Reporting Program: final report of the StrandNet team in the megafauna expert group

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    The objective of this report is to provide an overview of the present StrandNet program and suggest how it might be improved to enable the StrandNet database to function as a central component of the megafauna component of the Reef 2050 Integrated Monitoring and Reporting Program (RIMReP). The report results from a cross-sectoral, expert workshop held in Brisbane on 11 June 2018 and attended by personnel from the Great Barrier Reef Marine Park Authority, Queensland government departments of Environment and Science and Agriculture and Fisheries, James Cook University and the University of Queensland, plus subsequent input from some of the workshop attendees

    A time-dependent model for improved biogalvanic tissue characterisation

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    Measurement of the passive electrical resistance of biological tissues through biogalvanic characterisation has been proposed as a simple means of distinguishing healthy from diseased tissue. This method has the potential to provide valuable real-time information when integrated into surgical tools. Characterised tissue resistance values have been shown to be particularly sensitive to external load switching direction and rate, bringing into question the stability and efficacy of the technique. These errors are due to transient variations observed in measurement data that are not accounted for in current electrical models. The presented research proposes the addition of a time-dependent element to the characterisation model to account for losses associated with this transient behaviour. Influence of switching rate has been examined, with the inclusion of transient elements improving the repeatability of the characterised tissue resistance. Application of this model to repeat biogalvanic measurements on a single ex vivo human colon tissue sample with healthy and cancerous (adenocarcinoma) regions showed a statistically significant difference (p 0.05) between tissue types was found when measurements were subjected to the current model, suggesting that the proposed model may allow for improved biogalvanic tissue characterisation

    Les procès pour crimes de guerre allemands en France après la Seconde Guerre mondiale

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    Moisel Claudia. Les procès pour crimes de guerre allemands en France après la Seconde Guerre mondiale. In: Bulletin de l'Institut d'Histoire du Temps Présent, n°80, Second semestre 2002. pp. 90-101

    Aplicación web basada en el patrón MVC para mejorar la gestión tributaria de la Municipalidad Distrital de Guadalupito, La Libertad

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    “APLICACIÓN WEB BASADA EN EL PATRÓN MVC PARA MEJORAR LA GESTIÓN TRIBUTARIA DE LA MUNICIPALIDAD DISTRITAL DE GUADALUPITO, LA LIBERTAD” Las aplicaciones web no requieren de una instalación en la computadora del usuario, la actualización es automática, y se puede utilizar en diferentes dispositivos. Se tiene como objetivo mejorar significativamente la gestión tributaria de la Municipalidad Distrital de Guadalupito con el desarrollo de una aplicación web, así como reducir el tiempo en la búsqueda de información de los contribuyentes. El desarrollo del proyecto se basa en la metodología RUP, el cual se ha desarrollado desde la fase inicio hasta la transición, con los puntos más necesarios a considerarse. Finalmente, se concluye que la aplicación web, en la Municipalidad Distrital de Guadalupito, influye en gran escala, puesto que permite reducir el tiempo en la búsqueda de información de los contribuyentes

    A facility for testing the aerodynamic and acoustic performance of bidirectional air turbines for ocean wave energy conversion

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    Bidirectional air turbines are used in oscillating water column (OWC) power plants for harnessing ocean wave energy. This paper describes the bidirectional aerodynamic and aero-acoustic facility at the University of Siegen for model air turbines performance testing. At least nine test facilities are known worldwide, but their layout, the performance testing procedure and the presentation of performance data are not standardized to this day. The layout of the facility at the University of Siegen follows ideas in ISO 5801 for fan performance testing. The pressurized air supply is bidirectional but steady-state. Achievable values of Reynolds and Mach number of the test turbines are 1,000,000 and 0.5, respectively. In addition, the facility is equipped with acoustic attenuators in the air supply for allowing synchronous determination of aerodynamic and acoustic characteristics of a turbine. A good practice guideline for turbine performance testing and presentation is proposed by showing full sets of non-dimensional aerodynamic and acoustic performance characteristics from two sample model turbines. Eventually, a comparison of in situ data from a full-scale turbine in transient operation with scaled up steady-state model performance measurements underlines the usefulness of steady-state model performance testing

    Bidirectional air turbines for oscillating water column systems: Fast selection applying turbomachinery scaling laws

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    The collector of an oscillating water column system (OWC) for wave energy utilization requires a bidirectional turbine that copes with pneumatic power while providing specified impedance or, in terms of an OWC designer, “damping”. Damping is realized by keeping to a specific flow rate through the turbine at a given pressure head due to the individual performance characteristic of the turbine. With the number of turbine designs increasing designers of OWC systems are facing more options to select and dimension a bidirectional turbine. Energy yield, size and hence cost of the turbine and electric generator, operational behaviour, envisaged control strategy and noise emitted by the turbine are possible criteria for selection. The primary objective of this paper is to describe a simple procedure for making a first choice of a turbine for a particular OWC application. Here we confine ourselves to a family of reaction type of turbines (axial-flow Wells and mixed-flow turbines by Moisel) with their approximately linear pressure head/volume flow rate characteristics. Starting point is the set of non-dimensional steady-state characteristics of each turbine in the family. Utilizing standard scaling laws and a very simple time domain model for the cyclic turbine operation (i.e. based one single sea state and turbine operation assumed to be fixed rotational speed), first estimates of turbine size and rotor speed, number for stages or flows, and performance curves can be determined. The resulting turbine may also serve as a starting configuration for a refined analysis, e.g. the optimization of the turbine and the complete OWC system, utilizing more complex stochastic models. Three case studies illustrate the application of the method: selection and scaling of turbines, effect of collector parameters, turbines in series and parallel
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