Ara es mostren els items 25877-25896 de 245705

    • Asymptotic size of Herman rings of the complex standard family by quantitative quasiconformal surgery 

      Fagella Rabionet, Núria; Martínez-Seara Alonso, M. Teresa; Villanueva Castelltort, Jordi (2003)
      Article
      Accés obert
      In this paper we consider the complexification of the Arnold standard family of circle maps given by $\widetilde F_{\alpha,\ep}(u)=u{\rm e}^{{\rm i}\alpha} {\rm e}^{\frac{\ep}{2}(u-\frac{1}{u})}$, with $\alpha=\alpha( ...
    • Asymptotic size of Herman Rings using quasiconformal surgery 

      Granell i Yuste, Francesc (Universitat Politècnica de Catalunya, 2016-07)
      Treball Final de Grau
      Accés obert
      This thesis gives an introduction to the theory of quasiconformal surgery. To that end, we consider the complexification of the Arnol'd standard family of circle maps. These functions are analytically linearisable under ...
    • Asymptotic spatial behavior for the heat equation on noncompact regions 

      Knops, Robin J.; Quintanilla de Latorre, Ramón (John Wiley & sons, 2024-01-16)
      Article
      Accés obert
      We consider the isotropic initial boundary value problem for the heat equation on open regions with noncompact boundary and construct differential inequalities for a generalized heat flow measure defined over a spherical ...
    • Asymptotic stability for block triangular maps 

      Cima Mollet, Anna; Gasull Embid, Armengol; Mañosa Fernández, Víctor (2022-06)
      Article
      Accés obert
      We prove a result concerning the asymptotic stability and the basin of attraction of fixed points for block triangular maps. This result is applied to some families of discrete dynamical systems and several types of ...
    • Asymptotic study of canonical correlation analysis: from matrix and analytic approach to operator and tensor approach 

      Fine, Jeanne (Institut d'Estadística de Catalunya, 2003)
      Article
      Accés obert
      Asymptotic study of canonical correlation analysis gives the opportunity to present the different steps of an asymptotic study and to show the interest of an operator and tensor approach of multidimensional asymptotic ...
    • Asymptotic study of subcritical graph classes 

      Drmota, Michael; Fusy, Éric; Kang, Mihyun; Kraus, Veronika; Rué Perna, Juan José (2011-12-01)
      Article
      Accés obert
      We present a unified general method for the asymptotic study of graphs from the so-called subcritical graph classes, which include the classes of cacti graphs, outerplanar graphs, and series-parallel graphs. This general ...
    • Asymptotic theory: some recent developments 

      Cox, D. R. (Universitat Politècnica de Barcelona. Centre de Càlcul, 1983-12)
      Article
      Accés obert
      A review is given of recent work on asymptotic theory leading to a recommendation to use ratio likelihood rests with, where available, a Bartlett adjustment factor.
    • Asymptotic time domain evaluation of a multilevel multiphase PWM converter voltage quality 

      Ruderman, Alex; Reznikov, Boris; Busquets Monge, Sergio (IEEE Press. Institute of Electrical and Electronics Engineers, 2012-10-24)
      Article
      Accés restringit per política de l'editorial
      Voltage total harmonic distortion and quadratic voltage ripple criteria are accepted figures of merit of a multilevel pulse width modulation (PWM) converter voltage quality. The dominating frequency domain approach does ...
    • Asymptotic Tracking with DC-to-DC Bilinear Power Converters 

      Olm i Miras, Josep M. (Universitat Politècnica de Catalunya, 2004-04-16)
      Tesi
      Accés obert
      Avui en dia la conversió DC-AC té una important aplicació pràctica en el camp dels sistemes de potència ininterrompuda (SPI). Els convertidors commutats bàsics (el buck, lineal, i el boost i el buck-boost, no lineals) ...
    • Asymptotically optimal filtering in linear systems with fractional Brownian noises 

      Le Breton, Alain; Kleptsyna, Marina L.; Viot, Michel (Institut d'Estadística de Catalunya, 2004)
      Article
      Accés obert
      In this paper, the filtering problem is revisited in the basic Gaussian homogeneous linear system driven by fractional Brownian motions. We exhibit a simple approximate filter which is asymptotically optimal in the sense ...
    • Asymptotically optimal linear shrinkage of sample LMMSE and MVDR filters 

      Serra, Jordi; Nájar Martón, Montserrat (2014-07-15)
      Article
      Accés restringit per política de l'editorial
      Conventional implementations of the linearminimum mean-square (LMMSE) and minimum variance distortionless response (MVDR) estimators rely on the sample matrix inversion (SMI) technique, i.e., on the sample covariance matrix ...
    • Asymptotically optimum energy profile for successive interference cancellation in DS-CDMA under a power unbalance constraint 

      Sala Álvarez, José; Rey Micolau, Francesc; Villares Piera, Nemesio Javier (2012-02)
      Article
      Accés obert
      A new Ordinary Differential Equation (ODE) governing the SNIR evolution of a Successive Interference Canceller (SIC) for DS-CDMA is derived when the number of users tends to infinity and all users share the same channel ...
    • Asymptotically-optimal path planning on manifolds 

      Jaillet, Leonard Georges; Porta Pleite, Josep Maria (2012)
      Text en actes de congrés
      Accés obert
      This paper presents an approach for optimal path planning on implicitly-defined configuration spaces such as those arising, for instance, when manipulating an object with two arms or with a multifingered hand. In this kind ...
    • Asymptotics in the schema of simple varieties of trees 

      Garrido Pérez, Iñaki (Universitat Politècnica de Catalunya, 2022-05)
      Projecte Final de Màster Oficial
      Accés obert
      We study the functional equation y(x) = xA(y(x)) satisfied by the generating functions in the schema of simple varieties of trees. The radii of convergence r, R of y, A respectively satisfy y(r) <= R. In the subcritical ...
    • Asymptotics of sequences 

      Bender, Edward; Rué Perna, Juan José (2017-12-01)
      Capítol de llibre
      Accés restringit per política de l'editorial
    • Asynchronous and exact forward recovery for detected errors in iterative solvers 

      Jaulmes, Luc; Casas, Marc; Moretó Planas, Miquel; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José; Valero Cortés, Mateo (2018-03-19)
      Article
      Accés obert
      Current trends and projections show that faults in computer systems become increasingly common. Such errors may be detected, and possibly corrected transparently, e.g. by Error Correcting Codes (ECC). For a program to be ...
    • Asynchronous event-reactive system in a microservices-based architecture 

      Riera Vila, Martí (Universitat Politècnica de Catalunya, 2022-05-27)
      Projecte Final de Màster Oficial
      Accés obert
      The project consists in the implementation and the deployment of a system that is reactive to events in the context of an asynchronous software architecture. The events that arrive from any other part of the system will ...
    • Asynchronous interface specification, analysis and synthesis 

      Kishinewsky, M; Cortadella, Jordi; Kondratyev, A; Lavagno, L (1998-03)
      Report de recerca
      Accés obert
      Interfaces, by nature, are often asynchronous since they serve for connecting multiple distributed modules/agents without common clock. However, recent development in theory of asynchronous design in the area of ...
    • Asynchronous multipliers with variable-delay counters 

      Cornetta, Gianluca; Cortadella, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2001)
      Text en actes de congrés
      Accés obert
      Although multiplication is an intensely studied arithmetic operation and many fast algorithms and implementations are available, it still represents one of the major bottlenecks of many digital systems that require intensive ...
    • Asynchronous PGAS runtime for Myrinet networks 

      Farreras Esclusa, Montserrat; Almasi, George (Association for Computing Machinery (ACM), 2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      PGAS languages aim to enhance productivity for large scale systems. The IBM Asynchronous PGAS runtime (APGAS) supports various high productivity programming languages including UPC, X10 and CAF. The runtime has been designed ...