Ara es mostren els items 631-650 de 753

    • QSMVM: QoS-aware and social-aware multimetric routing protocol for video-streaming services over MANETS 

      Palacios Jara, Efraín; Mezher, Ahmad Mohamad; Aguilar Igartua, Mónica; Díaz Redondo, Rebeca P.; Fernández Vilas, Ana (Multidisciplinary Digital Publishing Institute (MDPI), 2021-01-29)
      Article
      Accés obert
      A mobile ad hoc network (MANET) is a set of autonomous mobile devices connected by wireless links in a distributed manner and without a fixed infrastructure. Real-time multimedia services, such as video-streaming over ...
    • Quantitative images of large biological bodies in microwave tomography by using numerical and real data 

      Mallorquí Franquet, Jordi Joan; Joachimowicz, N.; Broquetas Ibars, Antoni; Bolomey, J. C. (Jean-Charles) (IEE-INST ELEC ENG, 1996-11-01)
      Article
      Accés obert
      A new inverse microwave imaging algorithm is presented which has the ability to obtain quantitative dielectric maps of large biological bodies. By using a priori information, obtained with a first order algorithm, the final ...
    • Real-time lattice boltzmann shallow waters method for breaking wave simulations 

      Ojeda Contreras, Jesús; Susín Sánchez, Antonio (2014)
      Article
      Accés obert
      We present a new approach for the simulation of surfacebased fluids based in a hybrid formulation of Lattice Boltzmann Method for Shallow Waters and particle systems. The modified LBM can handle arbitrary underlying terrain ...
    • Recent advances in optimization techniques for statistical tabular data protection 

      Castro Pérez, Jordi (2011-03)
      Report de recerca
      Accés obert
      One of the main services of National Statistical Agencies (NSAs) for the current Information Society is the dissemination of large amounts of tabular data, which is obtained from microdata by crossing one or more categorical ...
    • Reduction des machines séquentielles non déterministes 

      Zahnd, Jacques (Universitat Politècnica de Barcelona. Centre de Càlcul, 1982-06)
      Article
      Accés obert
      En partant de la notion classique de machine séquentielle incomplètement spécifiée, on introduit une généralisation de ce modèle, sous la forme de tables d'états qui associent à chaque état présent et à chaque signal ...
    • Refficientlib: an efficient load-rebalanced adaptive mesh refinement algorithm for high-performance computational physics meshes 

      Baiges Aznar, Joan; Bayona Roa, Camilo Andrés (2017-03)
      Article
      Accés obert
      In this paper we present a novel algorithm for adaptive mesh refinement in computational physics meshes in a distributed memory parallel setting. The proposed method is developed for nodally based parallel domain partitions ...
    • Refinament dinàmic per un model phase-field del problema d'Stefan 

      Corbera González-Tablas, Patricia (Universitat Politècnica de Catalunya, 2022-01)
      Treball Final de Grau
      Accés obert
      El problema d'Stefan simula l'evolució de la interfície entre dues fases d'un material, sòlid i líquid. S'usa el model phase-field per a poder resoldre aquest problema sense haver de controlar explícitament l'evolució de ...
    • Relación entre el parámetro flecha-luz y la carga crítica de pandeo lateral para arcos parabólicos biempotrados bajo diferentes hipótesis de cálculo 

      Manzanares Japón, J.L.; Hinojosa Sánchez-Barbudo, I. (Universitat Politècnica de Catalunya. CIMNE, 2013)
      Article
      Accés obert
      En este artículo se proponen gráficas que relacionan los parámetros f/L y λ = qL3 /EIy para arcos biempotrados con diferentes secciones transversales y para diferentes hipótesis de cálculo. Para ello es necesario ...
    • Relaxing the roles of corners in BDDC by perturbed formulation 

      Badia, Santiago; Nguyen, Hieu Trung (Springer, 2017)
      Capítol de llibre
      Accés restringit per política de l'editorial
      This book is a collection of papers presented at the 23rd International Conference on Domain Decomposition Methods in Science and Engineering, held on Jeju Island, Korea on July 6-10, 2015. Domain decomposition methods ...
    • Research on rational layout of strut arms of tainter gate in vertical frame 

      Zhang, Xuecai; Wang, Zhengzhong; Sun, Danxia (Universitat Politècnica de Catalunya. CIMNE, 2018)
      Article
      Accés obert
      The overall stability of hydraulic tainter steel gate decrease seriously, and they are caused by improper structure layout of the two-way eccentric compression of struts. Chinese and American specification method, structural ...
    • Resolución numérica de las ecuaciones del movimiento de edificios de varias plantas con no linealidades severas 

      López Almansa, Francisco; Oller Martínez, Sergio Horacio (Universitat Politècnica de Catalunya. CIMNE, 2014)
      Article
      Accés obert
      Este artículo presenta un algoritmo para resolver las ecuaciones del movimiento de edificios de varias plantas que incorporan disipadores de energía friccionales como protección sismorresistente. El comportamiento de los ...
    • Respuesta dinámica de edificaciones producida por campos de ondas incidentes considerando la interacción suelo-estructura 

      Auersch, L.; Romero, A.; Galvín, P. (Universitat Politècnica de Catalunya. CIMNE, 2014)
      Article
      Accés obert
      En este artículo se presentan 2 metodologías basadas en las formulaciones del Método de los Elementos de Contorno y del Método de los Elementos Finitos para estudiar el efecto de la interacción suelo-estructura en el ...
    • Robin-Robin preconditioned Krylov methods for fluid-structure interaction problems 

      Badia, Santiago; Nobell Rodríguez, Pablo; Vergara, Christian (2008-08-14)
      Article
      Accés obert
      In this work we propose a Robin-Robin preconditioner combined with Krylov iterations for the solution of the interface system arising in fluid-structure interaction (FSI) problems. It can be seen as a partitioned FSI ...
    • Robust design methods in aerospace engineering 

      Kouhi Esfahani, Mohammad; Oñate Ibáñez de Navarra, Eugenio; Bugeda Castelltort, Gabriel (2008-11)
      Report de recerca
      Accés obert
      This document is an introduction to some important methodologies that have been developed in robust design in aerospace engineering. After describing the concept of robustness and uncertainty, multipoint, minimax, expected ...
    • SAR Interferometric phase noise reduction using wavelet transform 

      López Martínez, Carlos; Cànovas, Xavier Fàbregas; Chandra, A. M. (IEE-INST ELEC ENG, 2001-05-31)
      Article
      Accés obert
      The problem of synthetic aperture radar interferometric phase noise reduction is addressed. A new technique based on discrete wavelet transforms is presented. This technique guarantees high resolution phase estimation ...
    • Scalability evaluation of forecasting methods applied to bicycle sharing systems 

      Cortez Ordóñez, Alexandra Piedad; Vázquez Alcocer, Pere Pau; Sánchez Espigares, Josep Anton (Elsevier Ltd, 2023-10)
      Article
      Accés obert
      Public Bicycle Sharing Systems have spread in many cities for the last decade. The need of analysis tools to predict the behavior or estimate balancing needs has fostered a wide set of approaches that consider many variables. ...
    • Second order convex maximum entropy approximants with applications to high order PDE 

      Rosolen, Adrian Martin; Millán, Raúl Daniel; Arroyo Balaguer, Marino (2013-04-13)
      Article
      Accés obert
      We present a new approach for second order maximum entropy (max-ent) meshfree approximants that produces positive and smooth basis functions of uniform aspect ratio even for non-uniform node sets, and prescribes robustly ...
    • Second-order parameter estimation 

      Villares Piera, Nemesio Javier; Vázquez Grau, Gregorio (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-07-31)
      Article
      Accés obert
      This work provides a general framework for the design of second-order blind estimators without adopting any approximation about the observation statistics or the a priori distribution of the parameters. The proposed ...
    • Segmenting trajectories: A framework and algorithms using spatiotemporal criteria 

      Buchin, Maike; Driemel, Anne; Kreveld, Marc van; Sacristán Adinolfi, Vera (2011)
      Article
      Accés obert
      In this paper we address the problem of segmenting a trajectory based on spatiotemporal criteria. We require that each segment is homogeneous in the sense that a set of spatiotemporal criteria are fulfilled. We define ...
    • Selección óptima bajo criterios múltiples de materiales refractarios y aislantes para cazuelas metalúrgicas 

      Martínez Valdés, O.; Arzola Ruiz, J. (Universitat Politècnica de Catalunya. CIMNE, 2016)
      Article
      Accés obert
      Hasta el presente, el problema de la selección de materiales refractarios y aislantes no se ha tratado, en toda su complejidad, como una tarea de optimización bajo criterios múltiples, sino básicamente como un problema de ...