Ara es mostren els items 1919-1938 de 98404

  • A discrete bernoulli free boundary problem 

    González Nogueras, María del Mar; Gualdani, Maria; Shagholian, Henrick (2012-04)
    Report de recerca
    Accés obert
    We consider a free boundary problem for the p-Laplace operator which is related to the so-called Bernoulli free boundary problem. In this formulation, the classical boundary gradient condition is replaced by a condition ...
  • A discrete bit loading algorithm for FBMC/OQAM 

    Caus López, Marius; Pérez Neira, Ana Isabel; García Armada, Ana (2012-06)
    Article
    Accés restringit per política de l'editorial
    In this letter the discrete rate maximization problem is investigated for FBMC/OQAM. The analysis reveals that if there is crosstalk certain bit allocations violate the power constraints. Aiming at ensuring the feasibility ...
  • A discrete labelling approach to attributed graph matching using SIFT features 

    Sanromà Güell, Gerard; Alquézar Mancho, René; Serratosa Casanelles, Francesc (2010)
    Text en actes de congrés
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    Local invariant feature extraction methods are widely used for image-features matching. There exist a number of approaches aimed at the refinement of the matches between image-features. It is a common strategy among these ...
  • A discrete optimization problem in local networks and data alignment 

    Fiol Mora, Miquel Àngel; Andrés Yebra, José Luis; Alegre de Miguel, Ignacio; Valero Cortés, Mateo (1987-06)
    Article
    Accés restringit per política de l'editorial
    This paper presents the solution of the following optimization problem that appears in the design of double-loop structures for local networks and also in data memory, allocation and data alignment in SIMD processors. Consider ...
  • A discrete-time approach to the steady-state and stability analysis of distributed nonlinear autonomous circuits 

    Bonet Dalmau, Jordi; Palà Schönwälder, Pere; Miró Sans, Joan Maria (Institute of Electrical and Electronics Engineers (IEEE), 1998)
    Text en actes de congrés
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    We present a direct method for the steady-state and stability analysis of autonomous circuits with transmission lines and generic nonlinear elements. With the discretization of the equations that describe the circuit in ...
  • A discrete-time approach to the steady-state and stability analysis of distributed nonlinear autonomous circuits 

    Bonet Dalmau, Jordi; Palà Schönwälder, Pere (2000-02)
    Article
    Accés obert
    We present a direct method for the steady-state and stability analysis of autonomous circuits with transmission lines and generic non- linear elements. With the discretization of the equations that describe the circuit ...
  • A discrete-time chaotic oscillator based on the logistic map: A secure communication scheme and a simple experiment using Arduino 

    Acho Zuppa, Leonardo (2015-03-29)
    Article
    Accés obert
    This paper presents a modified discrete-time chaotic system obtained from the standard logistic map model. Then, a secure communication system is given and numerical experiments are carry out using the conceived discrete-time ...
  • A discrete-time equivalent system approach to the periodic response of nonlinear autonomous circuits 

    Palà Schönwälder, Pere; Miró Sans, Joan Maria (1994)
    Text en actes de congrés
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    The problem of computing the steady state response of nonlinear autonomous circuits is solved making use of a discrete-time equivalent system approach. With the application of an s-plane to z-plane mapping, the circuit ...
  • A discrete-time technique for the steady-state analysis of nonlinear class-E amplifiers 

    Águila López, Francisco del; Palà Schönwälder, Pere; Molina Gaudó, Pilar; Mediano Heredia, Arturo (Institute of Electrical and Electronics Engineers (IEEE), 2007-06-11)
    Article
    Accés obert
    Switched circuits are widely used, particularly for power electronic applications in which efficiency is important. Of these applications, the class-E amplifier has been given particular attention, since it is theoretically ...
  • A Discussion of the Paper "Hydration Reactions of Nonstoichiometric Barium Orthoaluminates" by T.R.N. Kutty and M. Nayak 

    Fernández Carrasco, Lucía (Elsevier, 1999-02)
    Article
    Accés restringit per política de l'editorial
  • A discussion on the design of graph database benchmarks 

    Domínguez Sal, David; Martínez Bazán, Norbert; Muntés Mulero, Víctor; Baleta Ferrer, Pedro; Larriba Pey, Josep (2011)
    Article
    Accés obert
    Graph Database Management systems (GDBs) are gaining popularity. They are used to analyze huge graph datasets that are naturally appearing in many application areas to model interrelated data. The objective of this paper ...
  • A discussion on the selection of prototypes for kansei engineering study 

    Marco Almagro, Lluís; Tort-Martorell Llabrés, Xavier; Schütte, Simon (2016)
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    One of the steps in a kansei engineering study is the evaluation of prototypes by users. Usually, the participants in the study give ratings to each one of the prototypes either using a semantic differential method or a ...
  • A dispatchable Bluetooth indoor location for mobile phones calling for emergency services 

    González Trastoy, Alberto (Universitat Politècnica de Catalunya, 2016-07)
    Projecte Final de Màster Oficial
    24 months embargo
    Realitzat a/amb:  Illinois Institute of Technology
  • A dispersion safety factor for LNG vapor clouds 

    Vílchez Sánchez, Juan Antonio; Villafañe, Diana; Casal Fàbrega, Joaquim (Elsevier, 2013)
    Article
    Accés restringit per política de l'editorial
    The growing importance of liquefied natural gas (LNG) to global energy demand has increased interest in the possible hazards associated with its storage and transportation. Concerning the event of an LNG spill, a study ...
  • A distance geometry approach to the singularity analysis of 3R robots 

    Thomas, Federico (ASME PRESS, 2015)
    Article
    Accés restringit per política de l'editorial
    This paper shows how the computation of the singularity locus of a 3R robot can be reduced to the analysis of the relative position of two coplanar ellipses. Since the relative position of two conics is a projective ...
  • A distance-based formulation of the octahedral manipulator kinematics 

    Rojas Libreros, Nicolás Enrique; Borràs Sol, Júlia; Thomas, Federico (2010)
    Text en actes de congrés
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    In most practical implementations of the Gough-Stewart platform, the octahedral form is either taken as it stands or is approximated. The kinematics of this particular instance of the Gough-Stewart platform, commonly known ...
  • A distortion measure to validate and generate curved high-order meshes on CAD surfaces with independence of parameterization 

    Gargallo Peiró, Abel; Roca Navarro, Xevi; Peraire Guitart, Jaume; Sarrate Ramos, Josep (John Wiley & Sons, 2016-06)
    Article
    Accés obert
    A framework to validate and generate curved nodal high-order meshes on Computer-Aided Design (CAD) surfaces is presented. The proposed framework is of major interest to generate meshes suitable for thin-shell and 3D finite ...
  • A distortion measure to validate and generate curved high-order meshes on CAD surfaces with independence of parameterization 

    Gargallo-Peiró, Abel; Roca, Xevi; Peraire, Jaume; Sarrate, Josep (Wiley Online Library, 2015-12-15)
    Article
    Accés obert
    A framework to validate and generate curved nodal high-order meshes on Computer-Aided Design (CAD) surfaces is presented. The proposed framework is of major interest to generate meshes suitable for thin-shell and 3D finite ...
  • A distributed algorithm for topology discovery in software-defined networks 

    Ochoa Aday, Leonardo; Cervelló Pastor, Cristina; Fernández Fernández, Adriana (Springer, 2016)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    To ensure a proficient topology discovery service in Software-Defined Networks (SDN), we propose a simple agents-based mechanism to improve the efficiency of the topology discovery process. In this work, an algorithm for ...
  • A Distributed algorithm to find Hamiltonian cycles in Gnp random graphs 

    Levy, Eythan; Louchard, Guy; Petit Silvestre, Jordi (2003-10)
    Report de recerca
    Accés obert
    In this paper, we present a distributed algorithm to find Hamiltonian cycles in random binomial graphs Gnp. The algorithm works on a synchronous distributed setting by first creating a small cycle, then covering almost all ...