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.

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

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

Title: Informe socio-residencial del barrio centro de Fuenlabrada Authors: Garcia-Almirall, M. Pilar Abstract: INFORME SOCIO-RESIDENCIAL DEL BARRIO CENTRO DE FUENLABRADA

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.

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

Title: Poster CONSTRUMAT Start-up Panel Authors: Burns, Malcolm Abstract: Poster CONSTRUMAT Start-up Panel

Title: Wahrnehmung des Raumes : Malerei um 1800 Authors: Usandizaga Calparsoro, Miguel M.

Title: Literature revision_Agent-based models Authors: Chica Mejía, Juan Eduardo Abstract: Literature revision_Agent-based models

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.

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)

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.

Title: Percepción de la apertura de los LMS en las ramas educativas y tecnológicas Authors: Conde García, Miguel Ángel; García Peñalvo, Francisco Javier; Rodríguez Conde, María José; Alier Forment, Marc Abstract: La aplicación de las tecnologías de información y la comunicación al aprendizaje supone cambios en los medios que soportan el aprendizaje, dando lugar a multitud de herramientas que pretenden mejorar el aprendizaje del estudiante. Una de las más destacadas son las plataformas de aprendizaje. Sin embargo estas herramientas por un lado se centran demasiado en la institución y el curso, y no tanto el estudiante; y por otro son entornos muy cerrados y monolíticos. Es necesario facilitar la evolución y apertura de estas plataformas y su adaptación a necesidades personales de los estudiantes para lo que se plantea un framework basado en servicios. Dicho framework se ha validado a través de experiencias en áreas de la educación y la tecnología y se han comparado entre sí. Lo que permite comprobar que la apertura de las plataformas de aprendizaje es posible y que eso facilita aprender a los estudiantes, no solo en contextos tecnológicos sino en otras áreas como la de la educación.

Title: LMS openness perception in educational and technological areas Authors: Conde García, Miguel Ángel; García Peñalvo, Francisco Javier; Rodríguez Conde, María José; Alier Forment, Marc Abstract: The application of the Information and Communications Technology implies changes in the means that support learning. This leads to the emergence of lot of tools that aim to improve students’ learning. One of the most relevant tools are learning management systems. However these tools are on the one hand, mostly focused on the institution and the course and not too much on the learner, and on the other they are very monolithic and closed environments. It is necessary to facilitate the evolution and openness of these platforms in a way they can fulfil students’ needs, and to do this a service-based framework is proposed. It has been validated through experiences in educational and technological areas and they were compared with each other. This allow to check that opening learning platforms is possible and not only in technological context but in other areas.

Title: Integration of M-learning and LMS: a sustainability approach Authors: Casany Guerrero, María José; Alier Forment, Marc; Barceló García, Miquel Abstract: Mobile phones are widely used in both rich and poor countries, unlike what happens with other ICTs. The expansion of mobile telephony in poor countries presents an opportunity to fight against digital divide. In the latter countries, mobile phones are used to get information and services about agriculture, health, and education among other areas. Specifically in the area of education there are many who think that mobile phones are a useful tool to help achieve universal primary education, one of the Millennium Development Goals proposed by the United Nations. There are many educational experiences with mobile phones for development. But most of these experiences have serious limitations that affect their long-term sustainability. In this line, the current paper provides a set of guidelines to define more sustainable and long-term viable mobile-learning projects and presents its applications to a m-learning project: the Moodbile project.

Title: On periodic solutions of 2-periodic Lyness' equations Authors: Bastien, Guy; Mañosa Fernández, Víctor; Rogalski, Marc Abstract: We study the existence of periodic solutions of the nonautonomous periodic Lyness' recurrenceun+2 = (an + un+1)/un, where {an}n is a cycle with positive values a, b and with positive initial conditions. It is known that for a = b = 1 all the sequences generated by this recurrence are 5-periodic. We prove that for each pair (a, b) ? (1, 1) there are infinitely many initial conditions giving rise to periodic sequences, and that the family of recurrences have almost all the even periods. If a ? b, then any odd period, except 1, appears.

Title: Temporal stability in the perception of dry eye ocular disconfort symptoms Authors: Cardona Torradeflot, Genís; Marcellán, Concepción; Fornieles Deu, Albert; Vilaseca Ricart, Meritxell; Quevedo Junyent, Luisa Jesus Abstract: Purpose. A prospective longitudinal study was designed to investigate the ability of patients with tear deficiency to correctly recall their past symptoms. The ultimate goal of the study was to contribute to the ongoing research concerning the lack of association between dry eye symptomatology and clinical tests of tear film evaluation. Methods. A total of 26 subjects with ages ranging from 29 to 61 years participated in the study. All subjects reported symptoms associated with tear deficiency, although none had been diagnosed with dry eye disease. Subjects were instructed to grade their symptoms on two different occasions, at the precise moment they were experiencing them, by means of a home questionnaire, and through a recall questionnaire, which was administered within a maximum interval of 10 days from the first questionnaire. Tear evaluation tests were performed at this second time. Non-parametric statistical analyses were used to investigate the relationship between present and recalled symptoms and between symptoms and signs, as well as between the different dry eye tests. The contributions of age, gender, and recall period were also evaluated. Results. With the exception of irritation (p 0.029) and scratchiness (p 0.025), no statistically significant difference was encountered between home and recall questionnaires, although females were found to recall their symptoms slightly better than males (p 0.048). An increase in the severity of the symptoms was associated with a better recollection (p 0.007). Symptoms (home or recalled) and clinical signs were not correlated, although the recalled symptom of scratchiness presented moderately strong correlations with several dry eye tests. Conclusions. Although the lack of correlation between dry eye tests and symptoms mirrored previous research, symptoms recall was found to follow certain interesting patterns, similar to those published in pain research literature.

Title: The Effect of proficiency on CLIL benefits in engineering students in Spain Authors: Aguilar Pérez, Marta; Muñoz, Carmen Abstract: This paper reports on a follow-up study of a Content and Language Integrated Learning (CLIL) pilot experience with bilingual postgraduate engineering students at a Spanish university. It aimed at examining learners' gains in listening and grammar skills after a CLIL course in English for a semester, in particular whether students' listening and grammar skills were affected similarly and whether participants' proficiency level played a role. Paired-sampled t-tests showed the difference between the mean scores in the pre-and post-listening test was significant but it was not for the pre-and post grammar tests. When students were distributed into three groups on the basis of their pre-test scores, a repeated measures ANOVA showed that less proficient students obtained higher gains in listening and grammar skills than more proficient students.

Title: Exposición laboral a material particulado, nanopartículas y su incidencia en la salud del trabajador Authors: Gómez Yepes, Milena Elizabeth; Cremades Oliver, Lázaro Vicente Abstract: El material partículado (MP) tiene una incidencia negativa en la salud humana, que se manifiesta especialmente por problemas cardiovasculares y respiratorios. Entre las enfermedades que se conocen ligadas a la presencia de MP en el aire respirado, podemos citar: EPOC, asma ocupacional, alergias, bronquitis crónica hasta cáncer ocupacional, o enfermedades laborales como la silicosis, asbestosis o tabacosis, las cuales son causa de baja laboral. Los efectos negativos de las concentraciones de partículas en el aire dependen básicamente del contaminante y sus propiedades (composición química, concentración, morfología, densidad y tamaño de partícula). En los centros de trabajo, los métodos de control de la exposición a MP no son lo efectivos que deberían ser, pues la incidencia de problemas o enfermedades respiratorias continúa en aumento. Por otra parte, la implantación creciente de la nanotecnología en el diseño, producción y uso de sistemas, dispositivos y productos está generando un interés en conocer los efectos que las nanopartículas (NP) pueden tener en la salud del trabajador. Ya que las propiedades de las nanoparticulas (NP) son muy diferentes a las partículas más grandes (MP) es esperable que sus efectos en el trabajador también sean diferentes. Algunos estudios epidemiológicos relacionan las NP con las afecciones cardio-respiratorias. Otras investigaciones afirman que los radicales libres de las NP afectan las cadenas de ADN, SNC y el nervio olfativo. La NIOSH ha manifestado que para el año 2014 se tendrán las primeras estrategias de muestreo ambiental de las NP. Este trabajo aporta una revisión del estado actual de conocimiento sobre las enfermedades laborales ante la exposición no controlada de MP y NP.

Title: Review on "Pairing computation on twisted Edwards form elliptic curves" Authors: Alsina Aubach, Montserrat