Recent Submissions

  • Triangles, ruler and compass 

    Joan Arinyo, Robert (1995-01-15)
    External research report
    Open Access
    A triangle can be specified by giving three independent geometric relationships defined between its elements. Usually, these relationships are distances between two vertices, angles between two sides, and heights. For each ...
  • Self-synchronized duty-cycling for sensor networks with energy harvesting capabilities: Implementation in Wiselib 

    Hernández, H.; Baumgartner, Tobias; Blum, Christian; Blesa Aguilera, Maria Josep; Fekete, Sandor P.; Kröller, Alexander (2010)
    External research report
    Open Access
    In this work we present a protocol for a self- synchronized duty-cycling mechanism in wireless sensor net- works with energy harvesting capabilities. The protocol is im- plemented in Wiselib, a library of generic algorithms ...
  • Towards the implementation of a preference-and uncertain-aware solver using answer set programming 

    Confalonieri, Roberto; Nieves Sánchez, Juan Carlos; Vázquez Salceda, Javier (2010)
    External research report
    Open Access
    Logic programs with possibilistic ordered disjunction (or LPPODs) are a recently defined logic-programming framework based on logic programs with ordered disjunction and possibilistic logic. The framework inherits the ...
  • Process mining meets abstract interpretation 

    Carmona Vargas, Josep; Cortadella Fortuny, Jordi (2010-07)
    External research report
    Open Access
    The discovery of process models out of system traces is an interesting problem that has received significant attention in the last years. In this work, a theory for the derivation of a Petri net from a set of traces is ...
  • Comparing error minimized extreme learning machines and support vector sequential feed-forward neural networks 

    Romero Merino, Enrique; Alquézar Mancho, René (2010-06)
    External research report
    Open Access
    Recently, error minimized extreme learning machines (EM-ELMs) have been proposed as a simple and efficient approach to build single-hidden-layer feed-forward networks (SLFNs) sequentially. They add random hidden nodes one ...
  • The Virtual Magic Lantern: An interaction metaphor for enhanced medical data inspection 

    Monclús Lahoya, Eva; Díaz Iriberri, José; Navazo Álvaro, Isabel; Vázquez Alcocer, Pere Pau (2010-03)
    External research report
    Open Access
    In Volume Rendering, it is difficult to simultaneously visualize interior and exterior structures. Several approaches have been developed to solve this problem, such as cut-away or exploded views. Nevertheless, in most ...
  • A multi-client architecture for hybrid terrain rendering on mobile devices 

    Noguera, José María; Segura Sánchez, Rafael Jesús; Ogáyar, Carlos; Joan Arinyo, Robert (2010-06)
    External research report
    Open Access
    Mobile devices such as Personal Digital Assistants (PDAs) or smart phones are rapidly increasing their graphics and networking capabilities. However, real-time rendering of large terrains is still a challenging task to ...
  • Geometric constraint problems and solution instances 

    Hidalgo Garcia, Marta; Joan Arinyo, Robert; Soto Riera, Antoni (2010-05)
    External research report
    Open Access
    Geometric constraint solving is a growing field devoted to solve geometric problems defined by relationships, called constraints, established between the geometric elements. In this work we show that what characterizes a ...
  • Skeleton computation of an image using a geometric approach 

    Martínez Bayona, Jonàs; Vigo Anglada, Marc; Pla García, Núria; Ayala Vallespí, M. Dolors (2010-03)
    External research report
    Open Access
    In this work we develop two algorithms to compute the skeleton of a binary 2D images. Both algorithms follow a geometric approach and work directly with the boundary of the image wich is an orthogonal polygon (OP). One of ...
  • Structural parameters 

    Ayala Vallespí, M. Dolors; Vergés, Eduard (2010-02)
    External research report
    Open Access
    The development of the bioengineering field has yield to the apparition of a new application of the Computer-Aided-Design, Bio-CAD, aiming to the use of computer models to represent biological samples and methods to simulate ...

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