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Ara es mostren els items 5728-5747 de 245691

    • A note on the query complexity of learning DFA 

      Balcázar Navarro, José Luis; Díaz Cort, Josep; Gavaldà Mestre, Ricard; Watanabe, Osamu (1992)
      Report de recerca
      Accés obert
      It is known that the class of deterministic finite automata is polynomial time learnable by using membership and equivalence queries. We investigate -- the query complexity -- the number of membership and equivalence queries ...

    • A note on the relationship between spectral radius and norms of bounded linear operators 

      Munhoz Rodrigues, Hildebrando; Solà-Morales Rubió, Joan de (2009)
      Article
      Accés obert
      Let X be a Banach space and L ( X ) be the Banach algebra of bounded operators on X . In this note we prove that if we have a compact subset K of a commutative sub-algebra of L ( X ), and given " > 0, then ...

    • A note on the scalar Haffian 

      Neudecker, Heinz (Institut d'Estadística de Catalunya, 2000)
      Article
      Accés obert
      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
      Accés restringit per política de l'editorial
      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
      Accés obert
      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 symplectic topology of b-manifolds 

      Miranda Galcerán, Eva; Martinez Torres, David; Frejlich, Pedro (2017)
      Article
      Accés obert
      Poisson manifold (M2n; ) is b-symplectic if Vn is transverse to the zero section. In this paper we apply techniques native to Symplectic Topology to address questions pertaining to b-symplectic manifolds. We pro- vide ...

    • A note on the totally transitive graph maps 

      Alseda Soler, Lluís; Río, M.A. del; Rodríguez Méndez, José Ángel (2000)
      Article
      Accés obert

    • A note on the two temperature theory with dual-phase-lag delay: some exact solutions 

      Quintanilla de Latorre, Ramón; Jordan, P.M. (Elsevier, 2009-10)
      Article
      Accés restringit per política de l'editorial
      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
      Accés obert
      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 the use of topology extensions for provoking instability in communication networks 

      Blesa Aguilera, Maria Josep (2004-03)
      Report de recerca
      Accés obert
      We study some aspects of the instability of the last-in-first-out (LIFO) scheduling protocol in under-loaded packet-switched networks under the Adversarial Queueing Theory model [Borodin et al., Journal of the ACM, ...

    • A note on upper bound formulations in limit analysis 

      Muñoz Romero, José; Huerta, Antonio; Bonet Carbonell, Javier; Peraire Guitart, Jaume (John Wiley & Sons, 2012-08-24)
      Article
      Accés restringit per política de l'editorial
      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
      Accés restringit per política de l'editorial
      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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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)
      Tesi
      Accés obert
      Increasingly High-Performance Computing (HPC) applications run on heterogeneous multi-core platforms. The basic reason of the growing popularity of these architectures is their low power consumption, and high throughput ...

    • A novel active gate driver for improving SiC MOSFET switching trajectory 

      Paredes Camacho, Alejandro; Sala Caselles, Vicenç; Ghorbani, Hamidreza; Romeral Martínez, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2017-11-01)
      Article
      Accés obert
      The trend in power electronic applications is to reach higher power density and higher efficiency. Currently, the wide band-gap devices such as silicon carbide MOSFET (SiC MOSFET) are of great interest because they can ...

    • A novel admission control scheme for network slicing based on squatting and kicking strategies 

      Hamouda, Ahmed Mohamed Abdelaty Elmekkawi; Hesselbach Serra, Xavier; Piney da Silva, José Ramón (Universidad de Zaragoza (UZA), 2019)
      Text en actes de congrés
      Accés obert
      New services and applications impose differentquality of service (QoS) requirements on network slicing. Tomeet differentiated service requirements, current Internet servicemodel has to support emerging real-time applications ...

    • A novel algorithm based on the combination of AC-OPF and GA for the optimal sizing and location of DERs into distribution networks 

      García Muñoz, Fernando Esteban; Díaz González, Francisco; Corchero García, Cristina (Elsevier, 2021-09)
      Article
      Accés obert
      This article proposes an algorithm to obtain an optimal local solution for the network planning process related to the optimal integration of different renewable energy sources (RES) and different BatteryEnergy Storage ...

    • A novel algorithm for fast BCG cycle extraction in ambulatory scenarios 

      Gómez Clapers, Joan; Casanella Alonso, Ramón; Pallàs-Areny, Ramon (2016)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      A novel algorithm JDet for ballistocardiogram (BCG) cycle extraction is presented that is intended for the fast generation of ensemble averages in ambulatory scenarios where the ECG signal is not available. First, the ...

    • A novel algorithm for isolated electrification projects 

      Ranaboldo, Matteo; García Villoria, Alberto; Ferrer Martí, Laia; Pastor Moreno, Rafael (2015-05-04)
      Report de recerca
      Accés obert
      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
      Accés obert
      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 ...