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Ara es mostren els items 9971-9990 de 245486

    • Adaptive phase-field modeling of heterogeneous materials 

      Llorenç i Vilanova, Roger (Universitat Politècnica de Catalunya, 2023-06)
      Treball Final de Grau
      Accés obert
      Comprendre el comportament de les fractures és crucial per optimitzar el disseny d'estructures i components d'enginyeria, des de les infraestructures civils fins als components d'aeronaus. El model "phase-field" s'ha tornat ...

    • Adaptive PI control with robust variable structure anti-windup strategy for systems with rate-limited actuators: application to compression systems 

      Eldigair, Yousif; Garelli, Fabricio; Kunusch, Cristian; Ocampo-Martínez, Carlos (2020-03-01)
      Article
      Accés obert
      In this paper, an adaptive proportional-integral (PI) control strategy for nonlinear systems with constrained actuators is discussed. In particular, a variable-structure anti-windup strategy that can be retro fitted onto ...

    • Adaptive points to estimate the Lebesgue constant on the simplex 

      Jiménez Ramos, Albert; Gargallo Peiró, Abel; Roca, Xevi (Barcelona Supercomputing Center, 2022-05)
      Text en actes de congrés
      Accés obert
      We present a novel adaptive sampling method to estimate the Lebesgue constant of nodal sets in n-dimensional simplices. The main application of this estimation is to assess the interpolation capabilities of a nodal ...

    • Adaptive power control of wave energy converters for maximum power absorption under irregular sea-state conditions 

      Mir Cantarellas, Antonio; Remón, D.; Koch-Ciobotaru, Cosmin; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés obert
      This paper proposes a novel wave energy converter (WEC) control technique based on an adaptive vector controller for maximum power absorption of the wave energy resource. The proposed controller arises as a suitable solution ...

    • Adaptive power shifting for power-constrained heterogeneous systems 

      Ortega Carrasco, Cristobal; Alvarez Martí, Lluc; Buyuktosunoglu, Alper; Bertran Monfort, Ramon; Rosedahl, Todd Jon; Bose, Pradip; Moretó Planas, Miquel (Institute of Electrical and Electronics Engineers (IEEE), 2023-03-01)
      Article
      Accés obert
      The number and heterogeneity of compute devices, even within a single compute node, has been steadily on the rise. Since all systems must operate under a power cap, the number of discrete devices that can run simultaneously ...

    • Adaptive pre-distortion for nonlinear high power amplifiers in OFDM systems 

      Durney Wasaff, Hugo Ivan (Universitat Politècnica de Catalunya, 2004-07-22)
      Tesi
      Accés obert
      El acelerado crecimiento de las comunicaciones a través de plataformas de transmisión en banda ancha por vía alámbrica e inalámbrica, sumado al uso cada vez más extenso de modulaciones de amplitud no constante que, debido ...

    • Adaptive prediction and bit-assignment in subband coding of speech 

      Mariño Acebal, José Bernardo; Martí Ros, Jaume (1985)
      Text en actes de congrés
      Accés obert
      The combination of time-domain harmonic scaling (TDHS) and sub-band coding (SBC) provides an encoding approach which allows 9.6 Kb/s speech encoding with good communication quality. Starting from this structure, this paper ...

    • Adaptive prediction models for data center resources utilization estimation 

      Baig, Shuja-ur-Rehman; Iqbal, Waheed; Berral García, Josep Lluís; Erradi, Abdelkarim; Carrera Pérez, David (2019-12)
      Article
      Accés obert
      Accurate estimation of data center resource utilization is a challenging task due to multi-tenant co-hosted applications having dynamic and time-varying workloads. Accurate estimation of future resources utilization helps ...

    • Adaptive predictive control for peripheral equipment management to enhance energy efficiency in smart manufacturing systems 

      Bermeo Ayerbe, Miguel Ángel; Ocampo-Martínez, Carlos; Díaz Rozo, Javier (2021)
      Article
      Accés obert
      The importance of implementing energy efficiency methodologies in industrial environments has increased considerably in the last decade given the high energy costs and environmental impact (e.g., greenhouse gas emissions). ...

    • Adaptive predictive control of a base-isolated hysteretic system 

      Ponce de León Puig, Nubia Ilia; Acho Zuppa, Leonardo; Rodellar Benedé, José (2017)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This article proposes an adaptive predictive control design technique to mitigate the displacement in a hysteretical base-isolated system seismically perturbed. The obtained predictive control law is based on the ...

    • Adaptive predictive robust control for fuel cells hybrid vehicles 

      Degliuomini, Lucas Nieto; Zumoffen, David; Basualdo, Marta; Feroldi, Diego Hernán; Riera, Jordi (Riera Colomer) (2010)
      Text en actes de congrés
      Accés obert
      The transient behavior of a Polymer Electrolyte Membrane Fuel Cell System (PEMFCS) under an efficient Adaptive Predictive Control with Robust Filter (APCWRF) is analyzed. This control scheme is tested to evaluate its ...

    • Adaptive principal component analysis for online reduced order parameter extraction in PA behavioral modeling and DPD linearization 

      Pham, Thi Quynh Anh; López Bueno, David; Montoro López, Gabriel; Gilabert Pinal, Pere Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents a new method, based on the adaptive principal component analysis (APCA) technique, that iteratively creates and updates an orthogonal data matrix used to estimate the parameters of power amplifier (PA) ...

    • Adaptive proactive reconfiguration: a technique for process variability and aging aware SRAM cache design 

      Pouyan, Peyman; Amat Bertran, Esteve; Rubio Sola, Jose Antonio (2014)
      Article
      Accés obert
      Nanoscale circuits are subject to a wide range of new limiting phenomena making essential to investigate new design strategies at the circuit and architecture level to improve its performance and reliability. Proactive ...

    • Adaptive radio resource management for ofdma-based macro- and femtocell networks 

      Bezerra Rodrigues, Emanuel (Universitat Politècnica de Catalunya, 2011-07-06)
      Tesi
      Accés obert
      Las demandas y expectativas de los usuarios y operadores móviles crecen sin parar y, consecuentemente, los nuevos estándares han incorporado tecnologías de acceso de radio cada vez más eficientes. Las especificaciones ...

    • Adaptive real time multimedia transmission 

      Espinach Casacuberta, Luc (Universitat Politècnica de Catalunya, 2017-01)
      Treball Final de Grau
      Accés obert
      Esta tesis es una propuesta de un sistema de streaming de vídeo en directo que utiliza varias tecnologías actuales y, por otro lado, se beneficia del mundo del software libre y de código abierto. El propósito de desarrollar ...

    • Adaptive reconstruction of radar reflectivity in clutter-contaminated areas by accounting for the space-time variability 

      Park, Shinju; Berenguer Ferrer, Marc (Elsevier, 2014-11-12)
      Article
      Accés obert
      Identification and elimination of clutter is necessary for ensuring data quality in radar Quantitative Precipitation Estimates (QPE). For uncorrected scanning reflectivity after signal processing, the removed areas have ...

    • Adaptive reduced basis strategy based on goal oriented error assessment for stochastic problems 

      Florentin, Eric; Díez, Pedro (2012-06)
      Article
      Accés obert
      In the framework of stochastic non-intrusive finite element modeling, a common practice is using Monte Carlo simulation. The main drawback of this approach is the computational cost, because it requires computing a large ...

    • Adaptive refinement for phase-field models of brittle fracture based on Nitsche's method 

      Muixí Ballonga, Alba; Fernández Méndez, Sonia; Rodríguez Ferran, Antonio (Springer, 2020-03-18)
      Article
      Accés obert
      A new adaptive refinement strategy for phase-field models of brittle fracture is proposed. The approach provides a computationally efficient solution to the high demand in spatial resolution of phase-field models. The ...

    • Adaptive refinement technique for discrete static models of fracture 

      Eliás, Jan (CIMNE, 2015)
      Text en actes de congrés
      Accés obert
      The discrete static models are advantageneously used for fracture simulations in heterogeneous materails. These simulations are often extremely computationally demanding. The contribution aims to reduction of computationa ...

    • Adaptive remeshing for industrial unsteady CFD 

      Limare, A.; Brenner, P.; Borouchaki, H. (CIMNE, 2015)
      Text en actes de congrés
      Accés obert
      FLUSEPA is an advanced simulation tool which performs a large panel of aerodynamicstudies. It is the unstructured finite-volume solver developed by Airbus Defence& Space tocalculate compressible, multidimensional, unsteady, ...