2,761 research outputs found

    Insuficiencias y limitaciones de la orden europea de investigación (OEI)

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    La Directiva 2014/41/UE relativa a la Orden Europea de Investigación en materia penal (OEI), se ha transpuesto al ordenamiento jurídico español, con más de un año de retraso, mediante la Ley 3/2018 por la que se modifica la Ley 23/2014, de reconocimiento mutuo de resoluciones penales en la UE. Se basa en el principio de confianza mutua de las autoridades judiciales de la UE y en la ejecución de sentencias de los Estados miembros. Este trabajo pretende estudiar la transposición de esta Directiva, analizando las insuficiencias. Además muestra que la necesidad de dotar de eficacia a este instrumento, abusando del principio de “proporcionalidad” y “ flexibilidad” , no puede vaciar de contenido el sistema de derechos y garantías procesales del sospechoso, acusado o tercero afectado, y no debe distorsionar el sistema generado incertidumbre e imprevisibilidad.The Directive 2014/41 / EU on the European Investigation Order in Criminal Matters (EOI), has been transposed to the Spanish legal system, with more than one year of delay, through the Law 3/2018, which modifies the Law 23/2014, mutual recognition of criminal decisions in the EU. It is based on the principle of mutual trust between the EU judicial authorities, and on the execution of the EU Member States. This paper aims to study the transposition of this Directive, analyzing its inadequacies. Furthmore, it highlights that the need to provide efficiency to this instrument, abusing the principle of "proportionality" and "flexibility", can not empty the content of the system of rights and procedural guarantees of the suspect, accused or third party affected, and has not to distort the system generated uncertainty and unpredictability

    Los Tribunales Superiores de Justicia y las Comunidades Autónomas

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    Some contributions to estimation for model-free control

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    This paper describes some contributions to Model Free Control (MFC). For example,its properties about disturbance rejection are analyzed. It is also shown that it is possible to propose new estimation methods for an extended version for MFC using time-varying parameters of an ultra-local model. In particular it is emphasized that these parameters can be estimated using alternative and standard adaptation methods. An application to a thermal process model illustrates one specific point of the new adaptive approach

    Numerical modelling of a high temperature power module technology with SiC devices for high density power electronics

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    This paper presents the development of a new packaging technology using silicon carbide (SiC) power devices. These devices will be used in the next power electronic converters. They will provide higher densities, switching frequencies and operating temperature than current Si technologies. Thus the new designed packaging has to take into account such new constraints. The presented work tries to demonstrate the importance of packaging designs for the performance and reliability of integrated SiC power modules. In order to increase the integrated density in power modules, packaging technologies consisting of two stacked substrates with power devices and copper bumps soldered between them were proposed into two configurations. Silver sintering technique is used as die-attach material solution. In order to assess the assembling process and robustness of these packaging designs, the thermo-mechanical behaviour is studied using FEM modelling. Finally, some recommendations are made in order to choose the suitable design for reliable power module

    Properties and optimal manufacturing conditions of chicken feathers thermoplastics biocomposites

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    The aim of this study was the analysis and characterization of composites based on thermoplastics (ethylene vinyl acetate, polypropilene and high-density polyethylene) and chicken feathers. Several composite samples with a content of 20% v/v of chicken feathers have been studied to determine the optimal manufacturing conditions of temperature, mixing time, and mixing speed to achieve the best tensile properties. The results have shown that the addition of micronized chicken feather (20% v/v) to thermoplastic matrices increases stiffness and provides a more brittle behavior. Ethylene vinyl acetate matrix also shows an ability to participate in second-order intermolecular interactions with chicken feathers, providing better tensile properties (tensile strength and toughness) than polypropilene and high-density polyethylene. Optimal manufacturing conditions were found for a mixing time of around 5min; a mixing speed of 50rmin 1 ; and temperature values of 160 C in case of high-density polyethylene, 120 C for ethylene vinyl acetate, and 170 C for polypropilene. Fourier transform infrared spectroscopy, differential scanning calorimetry and scanning electron microscopy analysis have been performed in order to provide further understanding of the compatibility and microstructural features that support the tensile properties of the materialsPostprint (author’s final draft

    Least squares and output error identification algorithms for continuous time systems with unknown time delay operating in open or closed loop

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    This paper presents two off-line output error identification algorithms for linear continuous-time systems with unknown time delay from sampled data. The proposed methods (for open and closed loop systems) use a Nonlinear Programming algorithm and needs an initialization step that is also proposed from a modication of the Yang algorithm. Simulations, as illustrated by Monte-Carlo runs, show that the obtained parameters are unbiased and very accurate

    State space estimation method for the identification of an industrial robot arm

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    In this paper, we study the identification of industrial robot dynamic models. Since the models are linear with respect to the parameters, the usual identification technique is based on the Least-Squares method. That requires a careful preprocessing of the data to obtain consistent estimates. In this paper, we carefully detail this process and propose a new procedure based on Kalman filtering and fixed interval smoothing. This new technique is compared to usual one with experimental data considering an industrial robot arm. The obtained results show that the proposed technique is a credible alternative, especially if the system bandwidth is unknown

    Growth of metastable phases during brick firing: mineralogical and microtextural changes induced by the composition of the raw material and the presence of additives

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    Research Project MAT2016-75889-R Junta de Andalucía Research Group RNM179 Departamento de Mineralogía y Petrología (Universidad de Granada) Departamento de Didáctica de las Ciencias Experimentales (Universidad de Granada) Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR) Grupo de Investigación HUM613 (Didáctica de las Ciencias Experimentales y de la Sostenibilidad)We thank Cerámica Castillo Siles for providing the raw material used to prepare and fire the bricks and Cervezas Alhambra S.L. (Granada) for providing the calcined diatomite sludge with yeast. We are grateful to Nigel Walkington for his assistance in translating the original text.Mineralogical and textural changes experienced by solid bricks made without additives and others made with added halite or with added calcined diatomite sludge, and fired in an electric oven at 800, 950 and 1100°C have been studied. Different analytical techniques (x-ray fluorescence, thermogravimetric analysis, x-ray diffraction, polarized optical microscopy and scanning electron microscopy) were used to reconstruct the changes that took place inside the bricks from a mineralogical and textural point of view. These changes are similar to those that take place in nature during pyrometamorphism. Carbonates decompose and react with silicates to form gehlenite, diopside and wollastonite. Plagioclase enriches in calcium and quartz concentration diminishes. Clay minerals favour the melting of matrix and the appearance of mullite. K-Feldspar changes from microcline to sanidine. The extent of vitrification increases in line with the increase in the firing temperature. When halite is added, new silicates appear earlier at lower firing temperatures and molysite is formed. Calcined diatomite sludge contains cristobalite, which becomes part of the mineralogy of the bricks. The newly-formed phases contain certain chemical elements that are not normally found in their standard chemical composition.This study was funded by Junta de Andalucía Research Group RNM179 and by the Research Project MAT2016-75889-R

    Synthetic whole-slide image tile generation with gene expression profile-infused deep generative models

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    In this work, we propose an approach to generate whole-slide image (WSI) tiles by using deep generative models infused with matched gene expression profiles. First, we train a variational autoencoder (VAE) that learns a latent, lower-dimensional representation of multi-tissue gene expression profiles. Then, we use this representation to infuse generative adversarial networks (GANs) that generate lung and brain cortex tissue tiles, resulting in a new model that we call RNA-GAN. Tiles generated by RNA-GAN were preferred by expert pathologists compared with tiles generated using traditional GANs, and in addition, RNA-GAN needs fewer training epochs to generate high-quality tiles. Finally, RNA-GAN was able to generalize to gene expression profiles outside of the training set, showing imputation capabilities. A web-based quiz is available for users to play a game distinguishing real and synthetic tiles: https://rna-gan.stanford.edu/, and the code for RNA-GAN is available here: https://github.com/gevaertlab/RNA-GAN.Grants PID2021- 128317OB-I00MCIN/AEI/10.13039/501100011033Project P20-00163, funded by Consejerı´a de Universidad, Investigacio´ n e InnovacioERDF A way of making Europ
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