Exact controllability for the wave equation in domains with variable boundary

Sin resume

Star Tracker for BEXUS19 Mission

The aim of this project is the implementation of its use in a stratospheric ballon.El objetivo de este trabajo es el diseño de un star tracker para su uso en un globo estratosférico.Proyecto Fin de Carrera de la Univ. de Granada. Departamento de Electrónica y Tecnología de Computadores.Este trabajo ha sido realizado dentro del programa REXUS/BEXUS, el autor del mismo fue miembro del equipo GranaSAT que participó en este programa durante la campaña BEXUS18/19.This project was realised under the REXUS/BEXUS programme, the author was member of the GranaSAT team who took part in the programme during the BEXUS18/19 campaign

Grajilla – Corvus monedula Linnaeus, 1758

Aves - Orden Passeriformes - Familia Corvidae en la Enciclopedia Virtual de Vertebrados Españoles, http://www.vertebradosibericos.org/. Versiones anteriores: 20-09-2006; 25-07-2012; 4-12-2014A comprehensive review of the natural history of the Eurasian Jackdaw Corvus monedula in Spain.Peer reviewe

Magnetic field induced inversion in the effect of particle size on powder cohesiveness

Experimental measurements are reported on the tensile yield stress of magnetofluidized beds of fine magnetic powders operated in the cross-flow configuration. In the absence of externally applied magnetic field the yield stress of the powder depends on particle size as expected, i.e., it increases as bead size is decreased. This trend is however inverted when an external magnetic field is applied. It is suggested that the average orientation of interparticle contacts relative to the direction of the field as affected by particle size plays a relevant role on the magnetic yield stress of these systems.Ministerio de Ciencia y Tecnología de España-FIS2006-0364

Dual-rate background subtraction approach for estimating traffic queue parameters in urban scenes

This study proposes traffic queue-parameter estimation based on background subtraction. An appropriate combination of two background models is used: a short-term model, very sensitive to moving vehicles, and a long-term model capable of retaining as foreground temporarily stopped vehicles at intersections or traffic lights. Experimental results in typical urban scenes demonstrate the suitability of the proposed approach. Its main advantage is the low computational cost, avoiding specific motion detection algorithms or post-processing operations after foreground vehicle detection.Ministerio de Educación y Ciencia DPI2010-19154Consejería de Innovación, Ciencia y Empresa P07-TIC-0262

Magnetic stabilization of fluidized beds: Effect of magnetic field orientation

Fluidized beds of granular materials can be stabilized by interparticle attractive forces which confer the expanded bed an elastic modulus that stabilizes it against flow perturbations. Stabilization in a structure of enduring contacts is seen to occur naturally due to the universal van der Waals forces for ∼50 μm particle size beds albeit in a quite reduced interval of gas velocities over the minimum fluidization velocity vmf. As shown in this work, a magnetic field may induce attractive forces between magnetizable particles thus extending the stable fluidization interval well beyond vmf. The structure of the magnetically stabilized bed is however markedly anisotropic since attractive magnetic forces are maximum along the direction of the externally imposed field which leads to the formation of chain particle aggregates. This paper shows experimental measurements on the magnetic yield stress, gas velocity at the transition to marginal stability and microstructure of magnetostabilized beds as affected by the direction of the magnetic field. Data shows that magnetic stabilization is optimized for co-flow fields as chain aggregates are preferentially orientated parallel to the magnetic field and along the direction of minimum drag. As the magnetic field is tilted, particle chains become tilted according to a balance between the magnetic attractive force between the particles and the vertical drag force, which reduces the magnetic yield stress and therefore shortens the interval of magnetic stabilization.Junta de Andalucía FQM-5735Ministerio de Economia y Competitividad CTQ2014-52763-C2-2-R, FIS2014-54539-

Computer Vision Techniques for Background Modeling in Urban Traffic Monitoring

Jose Manuel Milla, Sergio Luis Toral, Manuel Vargas and Federico Barrero (2010). Computer Vision Techniques for Background Modeling in Urban Traffic Monitoring, Urban Transport and Hybrid Vehicles, Seref Soylu (Ed.), ISBN: 978-953-307-100-8, InTech, DOI: 10.5772/10179. Available from: http://www.intechopen.com/books/urban-transport-and-hybrid-vehicles/computer-vision-techniques-for-background-modeling-in-urban-traffic-monitoringIn this chapter, several background modelling techniques have been described, analyzed and tested. In particular, different algorithms based on sigma-delta filter have been considered due to their suitability for embedded systems, where computational limitations affect a real-time implementation. A qualitative and a quantitative comparison have been performed among the different algorithms. Obtained results show that the sigma-delta algorithm with confidence measurement exhibits the best performance in terms of adaptation to particular specificities of urban traffic scenes and in terms of computational requirements. A prototype based on an ARM processor has been implemented to test the different versions of the sigma-delta algorithm and to illustrate several applications related to vehicle traffic monitoring and implementation details

POVIX: una interfaz gráfica de usuario (GUI) en MatLab para calcular el polinomio de Villarreal

El matemático peruano Federico Villarreal en 1879 propuso una fórmula para calcular la potencia n-ésima de un polinomio P(x), denominado polinomio de Villarreal. El objetivo del presente trabajo fue crear una interfaz gráfica para usuario que nos permita calcular la potencia n-ésima entera de un polinomio, a partir de la fórmula propuesta por el científico. Se elaboró una interfaz gráfica de usuario denominada (POVIX), para ello se utilizó la herramienta matemática MatLab v9.2 (R2017a) sobre el sistema operativo Windows 10. Con ayuda del Toolbox GUIDE (graphical user interface development environment) se diseñó la GUI que permitirá utilizar la fórmula propuesta. Finalmente, con MatLab Compiler™ v9.01, se obtuvo una aplicación autónoma. El resultado obtenido con la GUI es 100% la misma que se ha obtenido por otros métodos

Informe de Expediente Civil, materia: nulidad de acto jurídico, No. de Expediente: 01531-2019-0-0401-JR-CI-08 Informe de Expediente Laboral, materia: despido fraudulento, No. de Expediente: 30783-2013-62-1801-JR-LA-02

Materia: Nulidad de Acto Jurídico. Nº de Expediente: 01531-2019-0-0401-JR-CI-08. El siguiente expediente versa sobre una demanda de Nulidad de Acto Jurídico contra una donación de un inmueble (el cual formaba parte de un patrimonio de sociedad de gananciales), interpuesta por la cónyuge del donante al ver su patrimonio disminuido. Los problemas jurídicos esenciales que se discuten son: (i) la propiedad en la sociedad de gananciales; y, (ii) la teoría de los actos propios. Materia: Despido Fraudulento. Nº de Expediente: 30783-2013-62-1801-JR-LA-02. El presente expediente versa sobre una demanda de reposición por despido fraudulenta interpuesta por un trabajador de una minera ante su remoción de su puesto de trabajo después de una manifestación por parte de los trabajadores de la mina. Los problemas jurídicos esenciales que se discuten son: (i) la configuración de las faltas graves; (ii) el principio de inmediatez al momento del despido; y, (iii) las formalidades a cumplir al momento de despedir a un trabajador