Enviaments recents

  • Set systems with distinct sumsets 

    Cilleruelo, Javier; Serra Albó, Oriol; Wötzel, Maximilian (Elsevier, 2018)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    A family $\mathcal{A}$ of $k$-subsets of $\{1,2,\dots, N\}$ is a Sidon system if the sumsets $A+A'$, $A,A'\in \mathcal{A}$ are pairwise distinct. We show that the largest cardinality $F_k(N)$ of a Sidon system of $k$-subsets ...
  • On zero-one and convergence laws for graphs embeddable on a fixed surface 

    Atserias, Albert; Kreutzer, Stephan; Noy Serrano, Marcos (Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2018)
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    We show that for no surface except for the plane does monadic second-order logic (MSO) have a zero-one-law - and not even a convergence law - on the class of (connected) graphs embeddable on the surface. In addition we ...
  • Simulation study of tandems of perovskite and IBC c-Si solar cells 

    Silvestre Bergés, Santiago; Mas-Marza, Elena; Puigdollers i González, Joaquim; Fabregat Fillet, Jaume; Ortega Villasclaras, Pablo Rafael; Serra, Danielle (WIP Renewable Energies, 2018)
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    In this work, the simulation results obtained for a tandem configuration of perovskite, as top cell, and Interdigitated Back-Contacted (IBC) c-Si as bottom cell are presented. Two different models were used for the modelling ...
  • Image fusion based on principal component analysis and slicing image transformation 

    Acho Zuppa, Leonardo; Buenestado Caballero, Pablo (EDP Sciences, 2018)
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    Image fusion deals with the ability to integrate data from image sensors at different instants when the source information is uncertain. Although there exist many techniques on the subject, in this paper, we develop two ...
  • Comentaris sobre "Analyse des infiniment petits" de l’Hospital (1696-1768): interpretació i ensenyament de conceptes fonamentals del càlcul diferencial 

    Blanco Abellán, Mónica (Institut d'Estudis Catalans (IEC), 2018)
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    In 1696 the Marquis de L’Hospital (1661-1704) published the ‘Analyse des infiniment petits’ pour l’intelligence des lignes courbes, the first systematic work on differential calculus. The ‘Analyse’ played a fundamental ...
  • A proportional controller based on clustering theory: an academic example of a machine learning discipline 

    Acho Zuppa, Leonardo; Buenestado Caballero, Pablo (EDP Sciences, 2018)
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    The main objective of this paper is to present a controller design based on the K-means clustering theory. The controller is realized in such way that when the plant output is located outside of the designed clustering ...
  • Mentoring female high school students for a STEM career 

    Olmedo Torre, Noelia; Peña Carrera, Marta; López Beltrán, Mireia; Sanz Gómez, M. Carmen; López, David (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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    This Innovative Practice Work in Progress Paper presents a pilot test designed to train university students of engineering degrees (mentors) to advise and guide students aged between 15 and 16 (mentees) in technological ...
  • Analysis of the torsional mode T(0,1) propagating in a bending pipe 

    Quiroga, Jabid; Mujica Delgado, Luis Eduardo; Villamizar Mejía, Rodolfo; Ruiz Ordóñez, Magda (2018)
    Comunicació de congrés
    Accés obert
    In operation, some structural members are subjects to bending conditions. Velocity variations of guided waves propagating in a stressed specimen are expected due to the acoustoelasticity effect. In this work, a numerical ...
  • Medidas sísmicas instantaneas del fondo marino 

    Roset Juan, Francesc Xavier; Trullols Farreny, Enric; Prat Farran, Joana d'Arc; Río Fernandez, Joaquín del; Massana Hugas, Immaculada; Carbonell Ventura, Montserrat; Toma, Daniel (International Centre for Numerical Methods in Engineering (CIMNE), 2018)
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    El proyecto INMARSIS ha desarrollado y desplegado un equipo marino anclado que suministra datos sísmicos en tiempo real. El sistema se basa en un sismómetro submarino, una boya de superficie y un cable de amarre que ...
  • Recursos para autoaprendizaje en topografia 

    Buill Pozuelo, Felipe; Núñez Andrés, María Amparo; Prades Valls, Albert; Rodríguez Jordana, Juan (Universitat de Barcelona. Edicions i Publicacions, 2006)
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    En esta comunicación se muestra la tarea llevada a cabo por profesores de diferentes asignaturas de la titulación de Ingeniería Técnica en Topografía de Barcelona, dentro de un proyecto de innovación docente financiado por ...
  • A new lower bound on the maximum number of plane graphs using production matrices 

    Huemer, Clemens; Pilz, Alexander; Silveira, Rodrigo Ignacio (2018)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    We use the concept of production matrices to show that there exist sets of n points in the plane that admit ¿(41.77n) crossing-free geometric graphs. This improves the previously best known bound of ¿(41.18n) by Aichholzer ...
  • Non-crossing paths with geographic constraints 

    Silveira, Rodrigo Ignacio; Speckmann, Bettina; Verbeek, Kevin (Springer, 2018)
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    A geographic network is a graph whose vertices are restricted to lie in a prescribed region in the plane. In this paper we begin to study the following fundamental problem for geographic networks: can a given geographic ...

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