Ara es mostren els items 3888-3907 de 245425

    • A facile approach to tailor electrocatalytic properties of MnO2 through tuning phase transition, surface morphology and band structure 

      Zhou, Yingze; Zhou, Zizhen; Hu, Long; Tian, Ruoming; Wang, Yuan; Arandiyan, Hamidreza; Chen, Fandi; Li, Mengyao; Wan, Tao; Han, Zhaojun; Ma, Zhipeng; Lu, Xunyu; Cazorla Silva, Claudio; Wu, Tom; Chu, Dewei (Elsevier, 2022-06-15)
      Article
      Accés obert
      The structural and electronic properties of MnO2 based electrocatalysts are key factors determining their electrochemical performance. To date, it is still challenging to synergistically tune the crystal structure, morphology, ...
    • A factorization-based algorithm to predict EMG data using only kinematics information 

      Manzano, Marta; Serrancolí, Gil (2021-07-08)
      Article
      Accés obert
      EMG analyses have several applications, such as identifying muscle excitation patterns during rehabilitation or training plans, or controlling EMG-driven devices. However, experimental measurements can be time consuming ...
    • A factory of comparable corpora from Wikipedia 

      Barrón-Cedeño, Alberto; España Bonet, Cristina; Boldoba Trapote, Josu; Márquez Villodre, Luís (Association for Computational Linguistics, 2015)
      Text en actes de congrés
      Accés obert
      Multiple approaches to grab comparable data from the Web have been developed up to date. Nevertheless, coming out with a high-quality comparable corpus of a specific topic is not straightforward. We present a model ...
    • A failure-distance based method to bound the reliability of non-repairable Fault-tolerant systems without the knowledge of minimal cuts 

      Suñé, Víctor; Carrasco, Juan A. (2000-12-11)
      Report de recerca
      Accés obert
      CTMC (continuous-time Markov chains) are a commonly used formalism for modeling fault-tolerant systems. One of the major drawbacks of CTMC is the well-known state-space explosion problem. This work develops and analyzes ...
    • A failure-distance dased method to bound the reliability of non-repairable fault-tolerant systems without the knowledge of minimal cuts 

      Suñé, Víctor; Carrasco, Juan A. (Institute of Electrical and Electronics Engineers (IEEE), 2001-03)
      Article
      Accés obert
      CTMC (continuous-time Markov chains) are a commonly used formalism for modeling fault-tolerant systems. One of the major drawbacks of CTMC is the well-known state-space explosion problem. This paper develops and analyzes ...
    • A fair and abuse-free contract signing protocol from Boneh-Boyen signature 

      Heidarvand, Somayed; Villar Santos, Jorge Luis (Springer Verlag, 2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A fair contract signing protocol is used to enable two mistrusted parties to exchange two signatures on a given contract, in such a way that either both of them get the other party’s signature, or none of them gets anything. ...
    • A fair and distributed congestion control mechanism for smart grid neighborhood area networks 

      Astudillo León, Juan Pablo; Begin, Thomas; Busson, Anthony; Cruz Llopis, Luis Javier de la (Elsevier, 2020-04-29)
      Article
      Accés obert
      The need for significant improvements in the management and efficient use of electrical energy has led to the evolution from the traditional electrical infrastructures towards modern Smart Grid networks. Taking into account ...
    • A Fairness-Oriented Interference-Balancing Scheme for Cooperative Frequency Hopping Ad Hoc Networks 

      Pujol i Molist, Xavier (Universitat Politècnica de Catalunya, 2011-11-21)
      Projecte/Treball Final de Carrera
      Accés obert
      Realitzat a/amb:   Karlsruher Institut für Technologie
      English: It may quite frequently occur in an ad hoc network that the density of users in a given area becomes relatively high during some period of time. At the same time, network resource scheduling is not done regarding ...
    • A family of asymptotically good binary fingerprinting codes 

      Cotrina Navau, Josep; Fernández Muñoz, Marcel (2010-10)
      Article
      Accés restringit per política de l'editorial
      A fingerprinting code is a set of codewords that are embedded in each copy of a digital object with the purpose of making each copy unique. If the fingerprinting code is c-secure with error, then the decoding of a pirate ...
    • A family of discontinuous Galerkin mixed methods for nearly and perfectly incompressible elasticity 

      Shen, Yongxing; Lew, Adrian J. (2012)
      Article
      Accés obert
      We introduce a family of mixed discontinuous Galerkin (DG) finite element methods for nearly and perfectly incompressible linear elasticity. These mixed methods allow the choice of polynomials of any order k 2: 1 for the ...
    • A family of gradient descent grid frequency estimators for the SOGI filter 

      Matas Alcalá, José; Martín Cañadas, María Elena; Hoz Casas, Jordi de la; Abusorrah, A.; Al-Turki, Y.A.; Al-Hindawi, M. (2017-09-04)
      Article
      Accés restringit per política de l'editorial
      This paper applies the adaptive gradient descent method to the second-order generalized integrator (SOGI) filter in order to find an online estimation algorithm for the grid frequency, which leads to the proposal of three ...
    • A family of iterative methods that uses divided differences of first and second orders 

      Ezquerro, José Antonio; Grau Sánchez, Miguel; Hernández Verón, Miguel Angel; Noguera Batlle, Miquel (2015-11-01)
      Article
      Accés obert
      The family of fourth-order Steffensen-type methods proposed by Zheng et al. (Appl. Math. Comput. 217, 9592-9597 (2011)) is extended to solve systems of nonlinear equations. This extension uses multidimensional divided ...
    • A family of mixed graphs with large order and diameter 2 

      Araujo Pardo, Gabriela; Balbuena Martínez, Maria Camino Teófila; Miller, Mirka; Zdimalova, Maria (2017-02)
      Article
      Accés obert
      A mixed regular graph is a connected simple graph in which each vertex has both a fixed outdegree (the same indegree) and a fixed undirected degree. A mixed regular graphs is said to be optimal if there is not a mixed ...
    • A family of quadratically-solvable 5-SPU parallel robots 

      Borràs Sol, Júlia; Thomas, Federico; Torras, Carme (2010)
      Text en actes de congrés
      Accés obert
      A 5-SPU robot with collinear universal joints is well suited to handling an axisymmetric tool, since it has 5 controllable DoFs and the remaining one is a free rotation around the tool. The kinematics of such a robot having ...
    • A family of ratio estimators for population mean in extreme ranked set sampling using two auxiliary variables 

      Haq, Abdul; Shabbir, Javid (Institut d'Estadística de Catalunya, 2010)
      Article
      Accés obert
      In this paper we have adopted the Khoshnevisan et al. (2007) family of estimators to extreme ranked set sampling (ERSS) using information on single and two auxiliary variables. Expressions for mean square error (MSE) of ...
    • A family of stacked central configurations in the planar five-body problem 

      Lino Cornelio, J.; Álvarez Ramírez, Martha; Cors Iglesias, Josep Maria (2017-11)
      Article
      Accés obert
      We study planar central configurations of the five-body problem where three bodies, (Formula presented.) and (Formula presented.), are collinear and ordered from left to right, while the other two, (Formula presented.) and ...
    • A Fan Solution for the Philips Airfryer 

      Gibernau Torres, Octavi (Universitat Politècnica de Catalunya, 2012)
      Projecte/Treball Final de Carrera
      Accés restringit per decisió de l'autor
      The thesis on hand has been carried out at Philips Consumer Lifestyle Drachten that, together with Delft University of Technology, aims to develop a computed tool that determines the performance and efficiency curve of any ...
    • A fast and accurate method to solve the incompressible Navier-Stokes equations 

      Idelsohn Barg, Sergio Rodolfo; Nigro, Norberto; Gimenez, Juan; Rossi, Riccardo; Martí, Julio Marcelo (2013-02)
      Article
      Accés restringit per política de l'editorial
      Purpose: The purpose of this paper is to highlight the possibilities of a novel Lagrangian formulation in dealing with the solution of the incompressible Navier-Stokes equations with very large time steps. Design/meth ...
    • A fast and accurate two-stage strategy to evaluate the effect of the pin tool profile on metal flow, torque and forces in friction stir welding 

      Dialami, Narges; Cervera Ruiz, Miguel; Chiumenti, Michele; Agelet de Saracibar Bosch, Carlos (2017-03-01)
      Article
      Accés obert
      Pin geometry is a fundamental consideration in friction stir welding (FSW). It influences the thermal behaviour, material flow and forces during the weld and reflects on the joint quality. This work studies four pin ...
    • A fast and efficient algorithm to identify clusters in networks 

      Comellas Padró, Francesc de Paula; Miralles de la Asunción, Alicia (2010-11-01)
      Article
      Accés restringit per política de l'editorial
      A characteristic feature of many relevant real life networks, like the WWW, Internet, transportation and communication networks, or even biological and social networks, is their clustering structure. We discuss in this ...