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Identificación de la estructura urbana del Algarve (Portugal) mediante el valor de interacción

RSS Revistes i Congressos UPC - Dm, 01/10/2013 - 02:00
Title: Identificación de la estructura urbana del Algarve (Portugal) mediante el valor de interacción Authors: Moix Bergadà, Montserrat; Faria de Deus, Raquel; Roca Cladera, Josep; Tenedorio, José Antonio Abstract: Muchos estudios tienen como referencia la ciudad, analizándola y comparándola desde diferentes perspectivas y para multitud de finalidades. La división administrativa, propia de cada territorio, sirve generalmente de unidad de partida, sin cuestionar el ámbito que abarcan las ciudades reales, su área de influencia, su estructura interna... lo cual dificulta la comparación entre realidades urbanas de distintos territorios, acentuándose cuando se trata de diferentes países. Aunque la metodología desarrollada a partir del Valor de Interacción permite delimitar la estructura urbana mediante las relaciones funcionales que se establecen entre el mercado de trabajo y el de residencia, la necesidad de obtener la escala local o urbana exige disponer de la matriz de movilidad obligada por trabajo para unidades administrativas pequeñas (el ámbito local). En el caso de Portugal los municipios, concelhos, son muy extensos y aunque existe una división inframunicipal, la freguesia, el Censo sólo registra los desplazamientos entre freguesia de residencia y concelho de trabajo. Así, este trabajo propone identificar el sistema urbano del distrito de Faro de Portugal a partir de las freguesias, estimando para ello los flujos originados por la movilidad obligada por trabajo entre estas entidades inframunicipales.
Categories: Nou a UPCommons

Efficient margin adaptive scheduling for MIMO-OFDMA systems

RSS E-prints UPC - fa %age
Title: Efficient margin adaptive scheduling for MIMO-OFDMA systems Authors: Moretti, Marco; Pérez Neira, Ana Isabel Abstract: In this paper we address the problem of margin adaptive scheduling in the downlink of an orthogonal frequency division multiple access (OFDMA) multiple-input multiple-output (MIMO) system. Optimal resource allocation in MIMO systems requires the joint optimization of: a) linear transmit and receive spatial filters, b) channel assignment and c) power allocation. This problem is not convex and its complexity becomes thus intractable already for small sets of users and subcarriers. To reduce the complexity of the problem at hand, we propose a novel heuristic strategy that partitions the users in different groups according to their average channel quality and addresses the original problem by solving a succession of lower-complexity allocation problems. The spatial dimension is employed to prevent multiple access interference from hindering the performance of the sequential allocation. To further reduce the complexity burden we introduce a linear programming formulation in combination with a waterfilling-based strategy to allocate channels and power to the groups of users. Numerical results and evaluation of the computational complexity show that, though suboptimal, in most cases the proposed algorithm manages to exploit in an original way the inherent multi-user diversity of multi-carrier systems to ease the task of resource allocation with a very limited performance loss from the theoretic optimum.
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Rehabilitación energética de edificios escolares en clima mediterráneo: caso de estudio, Barcelona

RSS E-prints UPC - fa %age
Title: Rehabilitación energética de edificios escolares en clima mediterráneo: caso de estudio, Barcelona Authors: Bosch González, Montserrat; Rodríguez Cantalapiedra, Inma; Álvarez del Castillo, Javier Abstract: necesidad de reducir el consumo energético se hace cada día más evidente, especialmente en Europa debido a su situación de dependencia energética de países externos a la Unión y también por razones relacionadas con el impacto ambiental y las emisiones asociadas. En este contexto, la rehabilitación energética de edificios es una línea de trabajo prioritaria que actúa sobre el parque edificado, y los edificios públicos deben ser un modelo o ejemplo para impulsar este tipo de actuaciones. Los centros docentes, con un potencial de ahorro muy importante y con unos consumos energéticos asociados básicamente a dos grandes conceptos, la iluminación y la climatización, pueden considerarse como un laboratorio de investigación en cuanto a eficiencia energética. A partir de las experiencias adquiridas durante más de 10 años se ha desarrollado una metodología de análisis para la intervención en edificios docentes en Barcelona con los siguientes objetivos: definir los indicadores estratégicos para identificar las oportunidades de ahorro, evaluar las posibles medidas de reducción de consumos a partir de la limitación de la demanda, analizar y dar contenido al papel de cada uno de los actores que intervienen en las estrategias de uso y gestión de los edificios escolares y establecer los criterios que deben considerarse para realizar las futuras intervenciones de rehabilitación energética. El método, como manera de pensar ordenadamente, ha de permitir optimizar los recursos y descubrir les rutas de trabajo que nos conduzcan al objetivo final: reducir el consumo energético del parque edificado
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Performance assessment & synergic operation of algorithmic solutions enabling opportunistic networks– D4.2

RSS E-prints UPC - fa %age
Title: Performance assessment & synergic operation of algorithmic solutions enabling opportunistic networks– D4.2 Authors: Demestichas, Panagiotis; Pérez Romero, Jordi; Sallent Roig, José Oriol; Bouali, Faouzi; Ferrús Ferré, Ramón Antonio; Karvounas, Dimitrios; Georgakopoulos, Andreas; Stavroulaki, Vera; Tsagkaris, Kostas; Riaz, Maryam; Bourdellès, Michel; Vahid, Seiamak; Gebert, Jens; Fuchs, Rolf; Moreno, Oscar; Matinmikko, Marja; Sarvanko, Heli; Boskovic, Dragan; Tosic, M.; Alnwaimi, Ghassan; Rakotoharison, Lanto; Panaitopol, Dorin; Bagayoko, Abdoulaye; Mouton, Christian; Lee, Haeyoung; Shariat, Shahin Abstract: Deliverable D4.2 del projecte europeu OneFIT
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Informe socio-residencial del barrio centro de Fuenlabrada

RSS E-prints UPC - fa %age
Title: Informe socio-residencial del barrio centro de Fuenlabrada Authors: Garcia-Almirall, M. Pilar Abstract: INFORME SOCIO-RESIDENCIAL DEL BARRIO CENTRO DE FUENLABRADA
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MEET: Motif Elements Estimation Toolki

RSS E-prints UPC - fa %age
Title: MEET: Motif Elements Estimation Toolki Authors: Pairó Castiñeira, Erola; Maynou Fernández, Joan; Vallverdú Ferrer, Montserrat; Gallardo Chacón, Joan Josep; Caminal Magrans, Pere; Marco Colás, Santiago; Perera Lluna, Alexandre Abstract: MEET (Motif Elements Estimation Toolkit) es un paquete en R que integra un conjunto de algoritmos para la detección computacional de los puntos de unión de los factores de transcripción (TFBS). El paquete en R MEET incluye cinco programas de búsqueda de motivos: MEME/MAST (Multiple Expectation-Maximization for Motif Elicitation), Q-residuals, MDscan (Motif Discovery scan), ITEME (Information Theory Elements for Motif Estimation) y Match. Además, permite al usuario trabajar con diferentes algoritmos de alineamiento múltiple: MUSCLE (Multiple Sequence Comparison by Log-Expectation), ClustalW y MEME. El paquete puede trabajar en dos modos diferentes, entrenamiento y detección. El modo entrenamiento permite escoger los parámetros óptimos del detector escogido. Y el modo detección permite, una vez escogidos los parámetros, analizar un genoma en busca de puntos de unión. Además, ambos modos pueden combinar los diferentes métodos de alineamiento y de detección, permitiendo al usuario un amplio abanico de posibilidades. Esta característica permite comparar los diferentes métodos computacionales al mismo nivel,sin realizar ningún agravio comparativo debido al alineamiento.
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El Santuari de Nostra Sra. de la Misericòrdia de Canet de Mar: història i arquitectura

RSS E-prints UPC - fa %age
Title: El Santuari de Nostra Sra. de la Misericòrdia de Canet de Mar: història i arquitectura Authors: Meca Acosta, Benito; Rosselló i Nicolau, Maribel; Alcalde Vilà, Sergi Abstract: El Santuari de Nostra Sra. de la Misericòrdia de Canet de Mar: història i arquitectura
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Poster CONSTRUMAT Start-up Panel

RSS E-prints UPC - fa %age
Title: Poster CONSTRUMAT Start-up Panel Authors: Burns, Malcolm Abstract: Poster CONSTRUMAT Start-up Panel
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Wahrnehmung des Raumes : Malerei um 1800

RSS E-prints UPC - fa %age
Title: Wahrnehmung des Raumes : Malerei um 1800 Authors: Usandizaga Calparsoro, Miguel M.
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Literature revision_Agent-based models

RSS E-prints UPC - fa %age
Title: Literature revision_Agent-based models Authors: Chica Mejía, Juan Eduardo Abstract: Literature revision_Agent-based models
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Modelling shoreline sand waves: application to the coast of Namibia

RSS E-prints UPC - fa %age
Title: Modelling shoreline sand waves: application to the coast of Namibia Authors: Falqués Serra, Albert; Van den Berg, Niels; Ribas Prats, Francesca; Caballeria Suriñach, Miquel Abstract: The SW coast of Africa (Namibia and part of Angola) features very long sandy beaches and a wave climate dominated by energetic swells from the SSW, therefore approaching the coast with a very high obliquity. Satellite images reveal that along that coast there are many shoreline sand waves with wavelengths ranging from 2 to 8 km. A more detailed study, including a Fourier analysis of the shoreline position, confirms a high spectral density concentration at these lengths scales. Also, it becomes apparent that at least some of the sand waves are dynamically active rather than being controlled by the geological setting. A morphodynamic model is used to test the hypothesis that these sand waves could emerge as free morphodynamic instabilities of the coastline due to the obliquity in wave incidence. It is found that the wave period, Tp, is crucial to establish the tendency to stability or instability, instability increasing for decreasing period, whilst there is some discrepancy in the observed periods. Model results for Tp = 7 s clearly show the tendency for the coast to develop free sand waves at 2 km wavelength within a few years, which migrate to the north at rates of 0.6-0.7 km/yr. For Tp = 8 s, instability is weaker and rather sensitive to other factors as the underlying bathymetry. In this case, the coast seems to be nearly at neutral stability so that sand waves originated from other mechanisms can propagate downdrift with little decay.
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Delimitación de los sistemas urbanos de la costa ibérica: España y Algarve (Portugal)

RSS E-prints UPC - fa %age
Title: Delimitación de los sistemas urbanos de la costa ibérica: España y Algarve (Portugal) Authors: Moix Bergadà, Montserrat Abstract: DELIMITACIÓN DE LOS SISTEMAS URBANOS DE LA COSTA IBÉRICA: ESPAÑA Y ALGARVE (PORTUGAL)
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Dictamen técnico estructural

RSS E-prints UPC - fa %age
Title: Dictamen técnico estructural Authors: Muñoz Salinas, Francisco Abstract: Dictamen estructural para determinar el estado de la estructura de un edificio y si ella pudo ser la causa de unas supuestas patologías en el edificio de viviendas plurifamiliar ubicado en la calle GERMANS THOS Y CODINA nº 6 de Mataró en la provincia de Barcelona, España.
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Hybrid tables for speeding-up data accesses in hybrid database management systems

RSS E-prints UPC - fa %age
Title: Hybrid tables for speeding-up data accesses in hybrid database management systems Authors: Guisado Gamez, Joan; Wolski, Antoni; Zuzarte, Calisto; Larriba Pey, Josep; Muntés Mulero, Víctor
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Area and laser power scalability analysis in photonic networks-on-chip

RSS E-prints UPC - fa %age
Title: Area and laser power scalability analysis in photonic networks-on-chip Authors: Abadal Cavalle, Sergi; Cabellos Aparicio, Alberto; Lázaro Villa, José Antonio; Nemirovsky, Mario; Alarcón Cot, Eduardo José; Solé Pareta, Josep Abstract: In the last decade, the field of microprocessor architecture has seen the rise of multicore processors, which consist of the interconnection of a set of independent processing units or cores in the same chip. As the number of cores per multiprocessor increases, the bandwidth and energy requirements for their interconnection networks grow exponentially and it is expected that conventional on-chip wires will not be able to meet such demands. Alternatively, nanophotonics has been regarded as a strong candidate for chip communication since it could provide high bandwidth with low area and energy footprints. However, issues such as the unavailability of efficient on-chip light sources or the difficulty of implementing all-optical buffering or header processing hinder the development of scalable photonic on-chip networks. In this paper, the area and laser power of several photonic on-chip network proposals is analytically modeled and its scalability is evaluated. Also, a graphene-based hybrid wireless/optical-wired approach is presented, aiming at enabling end-to-end photonic on-chip networks to scale beyond thousands of cores
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Hybrid block copolymers constituted by peptides and synthetic polymers: An overview of synthetic approaches, supramolecular behavior and potential applications

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Title: Hybrid block copolymers constituted by peptides and synthetic polymers: An overview of synthetic approaches, supramolecular behavior and potential applications Authors: Morell Bel, Mireia; Puiggalí Bellalta, Jordi Abstract: Hybrid block copolymers based on peptides and synthetic polymers, displaying different types of topologies, offer new possibilities to integrate the properties and functions of biomacromolecules and synthetic polymers in a single hybrid material. This review provides a current status report of the field concerning peptide-synthetic polymer hybrids. The first section is focused on the different synthetic approaches that have been used within the last three years for the preparation of peptide-polymer hybrids having different topologies. In the last two sections, the attractive properties, displayed in solution or in the solid state, together with the potential applications of this type of macromolecules or supramolecular systems are highlighted.
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Polymeric soil anti-redeposition agent for washing synthetic fabrics

RSS E-prints UPC - fa %age
Title: Polymeric soil anti-redeposition agent for washing synthetic fabrics Authors: Carrión Fité, Francisco Javier Abstract: The textile washing process consists basically of three stages: 1) removal of the soiling from the substrate, 2) suspension of the soiling in the washing bath, and 3) prevention of redeposition of the soiling on the substrate from which has just been removed. The soiling removed may be caught again on the substrate to a greater or lesser extent during the detergent process. This phenomenon constitutes the unwanted redeposition of that impurity on the substrate and polymers are added to prevent it. The redeposition of impurities must be prevented during the washing of synthetic fibres, such as polyester or acrylic, which have a compact crystalline structure. The purpose of this work is to ascertain the behavior of a polyethylene glycol polyester copolymer when used as a detergent additive to prevent redeposition of solid impurities during the washing of standard polyester and acrylic fabrics. That polymer was used in washing tests in the presence of an anionic surfactant sodium dodecylbenzenesulfonate (SDBS), and a non-ionic surfactant, fatty alcohol ethoxylate with 7 moles E.O., separately and in mixtures of both with varying proportions. The soiling applied was carbon black, as a solid impurity in washing. In order to explain the observed behavior, the electrical double layer of the fabrics was characterized, depending on the surfactants and the mixtures tested
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Bearing fault detection by a novel condition-monitoring scheme based on statistical-time features and neural networks

RSS E-prints UPC - fa %age
Title: Bearing fault detection by a novel condition-monitoring scheme based on statistical-time features and neural networks Authors: Delgado Prieto, Miguel; Cirrincione,, Giansalvo; García Espinosa, Antonio; Ortega Redondo, Juan Antonio; Henao, Humberto Abstract: Bearing degradation is the most common source of faults in electrical machines. In this context, this work presents a novel monitoring scheme applied to diagnose bearing faults. Apart from detecting local defects, i.e., single-point ball and raceway faults, it takes also into account the detection of distributed defects, such as roughness. The development of diagnosis methodologies considering both kinds of bearing faults is, nowadays, subject of concern in fault diagnosis of electrical machines. First, the method analyzes the most significant statistical-time features calculated from vibration signal. Then, it uses a variant of the curvilinear component analysis, a nonlinear manifold learning technique, for compression and visualization of the feature behavior. It allows interpreting the underlying physical phenomenon. This technique has demonstrated to be a very powerful and promising tool in the diagnosis area. Finally, a hierarchical neural network structure is used to perform the classification stage. The effectiveness of this condition-monitoring scheme has been verified by experimental results obtained from different operating conditions.
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Sistema de alertas vía Android

Title: Sistema de alertas vía Android Authors: Alcalde Sebastian, Rubén Francisco Abstract: Memoria del proyecto "Sistema de alertas vía Android", de Rubén Alcalde.
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Utilització i recull de recursos TIC a l’aula d’acollida

Title: Utilització i recull de recursos TIC a l’aula d’acollida Authors: Orobitg Boyer, Gerard Abstract: Aquest treball de fi de màster pretén realitzar un recull dels recursos TIC (Tecnologies de la Informació i Comunicació) més interessants disponibles actualment, seguint les premisses que siguin gratuïts i multi plataforma. Aquest recull és agrupat segons el temari que es treballa a l’aula d’acollida o per tecnologia que es pot utilitzar dins l’aula. D’aquesta manera es facilita la tasca del professor a l’hora de cercar aquell recurs que més li interessi, o segons el temari a treballar a la sessió veure si existeix o no un recurs TIC que es pugui utilitzar. L’agrupació utilitzada en aquest treball de fi de màster és la següent: correu electrònic, cercadors, diccionaris, enciclopèdies, traductors, català, matemàtiques, medi, blogs, WebQuest, presentacions, vídeos en línia, premsa, còmics i altres. Per a cadascun dels materials TIC presentats en aquest treball de fi de màster es planteja una activitat o com es podria utilitzar el recurs, que prèviament s’ha presentat, dins l’aula d’acollida, fent d’aquesta manera, la transformació de recurs TIC a un eficaç recurs TAC (Tecnologies del Aprenentatge i del Coneixement). Per finalitzar el treball de fi de màster, es detalla una activitat utilitzant un recurs TIC. Aquesta activitat és plantejada per alumnes en edat de cursar l’ESO, i com a previ pas de la seva incorporació a l’aula ordinària, per tant, està orientat a alumnes d’aula d’acollida amb força nivell de català. Per finalitzar l’activitat, l’alumne ha d’exposar el seu treball en horari de tutories davant la resta de companys. D’’aquesta manera es milloren les habilitats socials tant de l’alumne nouvingut com de la resta de companys.
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