Now showing items 1919-1938 of 66668

  • A note on the scalar Haffian 

    Neudecker, Heinz (Institut d'Estadística de Catalunya, 2000)
    Article
    Open Access
    In this note a uniform transparent presentation of the scalar Haffian will be given. Some well-known results will be generalized. A link will be established between the scalar Haffian and the derivative matrix as developed ...
  • A note on the subgraphs of the (2×\infty)-grid 

    Díaz Cort, Josep; Kaminski, Marcin; Thilikos Touloupas, Dimitrios (2010-02)
    Article
    Restricted access - publisher's policy
    We give a linear-time algorithm checking whether a graph is a subgraph of the (2×k)-grid for some value of k. Our algorithm is based on a detailed characterization of the structure of such graphs.
  • A note on the symmetric difference in lattices 

    Renedo, Eloy; Trillas i Gay, Enric; Alsina Català, Claudi (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2005)
    Article
    Open Access
    The paper introduces a definition of symmetric difference in lattices with negation, presents its general properties and studies those that are typical of ortholattices, orthomodular lattices, de Morgan and boolean algebras.
  • A note on the totally transitive graph maps 

    Alseda Soler, Lluís; Río, M.A. del; Rodríguez Méndez, José Ángel (2000)
    Article
    Open Access
  • A note on the two temperature theory with dual-phase-lag delay: some exact solutions 

    Quintanilla de Latorre, Ramón; Jordan, P.M. (2009-10)
    Article
    Restricted access - publisher's policy
    In this note we present exact solutions of two initial-boundary value problems (IBVP)s in the setting of a recently-introduced theory of heat conduction, wherein the two temperature theory of the late 1960s is merged ...
  • A note on the use of supply-use tables in impact analyses 

    Lenzen, Manfred; Rueda-Cantuche, José M. (Institut d'Estadística de Catalunya, 2012)
    Article
    Open Access
    Little attention has so far been paid to the problems inheren t in interpreting the meaning of results from standard impact analyses using symmetric input-outpu t tables. Impacts as well as drivers of these impacts ...
  • A note on upper bound formulations in limit analysis 

    Muñoz Romero, José; Huerta, Antonio; Bonet Carbonell, Javier; Peraire, Jaume (John Wiley & Sons, 2012-08-24)
    Article
    Restricted access - publisher's policy
    In this paper we study some recent formulations for the computation of upper bounds in limit analysis. We show that a previous formulation presented by the authors does not guarantee the strictness of the upper bound, ...
  • A note on Weak Stability Boundaries 

    García González, Fernando; Gómez Muntané, Gerard (2006-12-08)
    Article
    Restricted access - publisher's policy
    This paper is devoted to clarify the algorithmic definition of the weak stability boundary in the framework of the planar Restricted Three Body Problem. The role of the invariant hyperbolic manifolds associated to the ...
  • A novel AC-AC converter based SiC for domestic induction cooking applications 

    Salehifar, Mehdi; Moreno Eguilaz, Juan Manuel; Sala Caselles, Vicenç; Romeral Martínez, José Luis (2013)
    Conference report
    Restricted access - publisher's policy
    This paper presents the analysis and design of a new high frequency ac-ac converter applied to domestic induction heating. The proposed topology uses only four switches to control power. Converter operation is same as a ...
  • A novel access pattern-based multi-core memory architecture 

    Hussain, Tassadaq (Universitat Politècnica de Catalunya, 2014-12-18)
    Doctoral thesis
  • A novel algorithm for isolated electrification projects 

    Ranaboldo, Matteo; García Villoria, Alberto; Ferrer Martí, Laia; Pastor Moreno, Rafael (2015-05-04)
    External research report
    Open Access
    In this report it is proposed a metaheuristic procedure to support the design of stand - alone commun ity electrification projects. In particular, the solution returned by the procedure ...
  • A Novel Algorithm for Ship Detection in SAR Imagery Based on the Wavelet Transform 

    Tello Alonso, Mª Victoria; López Martínez, Carlos; Mallorquí Franquet, Jordi Joan (IEEE, 2005-04-30)
    Article
    Open Access
    Carrying out an effective control of fishing activities is essential to guarantee a sustainable exploitation of sea resources. Nevertheless, as the regulated areas are extended, they are difficult and time consuming to ...
  • A novel approach for hybrid performance modelling and prediction of large-scale computing systems 

    Pllana, Sabri; Benkner, Siegfried; Xhafa Xhafa, Fatos; Barolli, Leonard (2009)
    Article
    Restricted access - publisher's policy
    We present a novel approach for hybrid performance modeling and prediction of large-scale parallel and distributed computing systems, which combines mathematical modeling and discrete-event simulation. We use mathematical ...
  • A novel approach for voltage control of multi-terminal DC grids with offshore wind farms 

    Rouzbehi, Kumars; Miranian, Arash; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2013)
    Conference lecture
    Restricted access - publisher's policy
    This paper proposes a novel control strategy in multi-terminal DC (MTDC) grids with offshore wind generation based on the idea of generalized voltage droop (GVD). In the proposed strategy, the GVD characteristics are ...
  • A Novel approach to reconstruct the plinian and co-ignimbrite phases of large eruptions - Campanian Ignimbrite 

    Marti, Alejandro; Folch, Arnau; Costa, Antonio; Engwell, Samantha (Barcelona Supercomputing Center, 2015-05-05)
    Conference report
    Open Access
    Reconstructing the volume and tephra dispersal from volcanic super-eruptions is necessary to assess the widespread impact of these massive events on climate, ecosystems and humans. Recent studies have demonstrated that ...
  • A Novel Assist-as-Needed Controller for Locomotion Training in the fMRI 

    Gómez-Lor López, Isaac (Universitat Politècnica de CatalunyaEidegenössische Technische Hochschule Zürich, 2011)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    In this thesis it is explained the work done in order to develop a patient-cooperative control that assists only as it is needed for the MR-compatible stepper (MARCOS) developed at the Sensory Motor System Lab of ETH Zürich. ...
  • A novel asynchronous software cache implementation for the Cell-BE processor 

    Balart, J; González Tallada, Marc; Martorell Bofill, Xavier; Ayguadé Parra, Eduard; Sura, Z; Chen, T; Zhang, T; O'Brien, Kevin; O'Brien, Kathryn (2008-10)
    Article
    Restricted access - publisher's policy
    This paper describes the implementation of a runtime library for asynchronous communication in the Cell BE processor. The runtime library implementation provides with several services that allow the compiler to generate ...
  • A novel autonomous RAT selection algorithm for non real time services 

    Pérez Romero, Jordi; Sallent Roig, José Oriol (2009)
    Conference report
    Open Access
    This paper proposes a new solution for autonomous decision-making in the RAT selection process in multi-service multi-access network scenarios. It is based on exploiting the time dimension in the RAT selection, so that, ...
  • A novel bidirectional multilevel boost-buck dc-dc converter 

    Busquets Monge, Sergio; Alepuz Menéndez, Salvador; Bordonau Farrerons, José (2009-09)
    Conference lecture
    Open Access
    A novel noninverting boost-buck dc-dc converter topology is presented, applicable when both sides of the converter need to have the same grounding. It is based on the back-to-back connection of two n-level diode-clamped ...
  • A novel blind adaptive correction algorithm for 2-channel time-interleaved ADCs 

    Singh, Simran; Epp, Michael; Valkama, Mikko; Vallant, Georg; Schlecker, Wolfgang (SARTI, 2013)
    Article
    Open Access