Exploració per tema "Iterative methods"
Ara es mostren els items 9-28 de 46
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Comment on: "On the Kung-Traub Conjecture for iterative methods for solving quadratic equations" Algorithms 2016, 9, 1
(2016-06)
Article
Accés obertKung-Traub conjecture states that an iterative method without memory for finding the simple zero of a scalar equation could achieve convergence order 2(d-1), and d is the total number of function evaluations. In an article ... -
Distributed multivariate regression with unknown noise covariance in the presence of outliers: an MDL approach
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés obertWe consider the problem of estimating the coefficients in a multivariable linear model by means of a wireless sensor network which may be affected by anomalous measurements. The noise covariance matrices at the different ... -
Distributed TLS estimation under random data faults
(Institute of Electrical and Electronics Engineers (IEEE), 2015)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper addresses the problem of distributed estimation of a parameter vector in the presence of noisy input and noisy output data, as well as data faults, performed by a wireless sensor network in which only local ... -
Expectation–maximisation based distributed estimation in sensor networks
(Institution of Engineering and Technology, 2019-03-01)
Capítol de llibre
Accés restringit per política de l'editorialEstimating the unknown parameters of a statistical model based on the observations collected by a sensor network is an important problem with application in multiple fields. In this setting, distributed processing, by which ... -
Higher order multi-step iterative method for computing the numerical solution of systems of nonlinear equations: Application to nonlinear PDEs and ODEs
(2015-10-15)
Article
Accés restringit per política de l'editorialIn the present study, we consider multi-step iterative method to solve systems of nonlinear equations. Since the Jacobian evaluation and its inversion are expensive, in order to achieve a better computational efficiency, ... -
Higher order multi-step Jarratt-like method for solving systems of nonlinear equations: application to PDEs and ODEs
(2015-08-01)
Article
Accés obertThis paper proposes a multi-step iterative method for solving systems of nonlinear equations with a local convergence order of 3m - 4, where in (>= 2) is the number of steps. The multi-step iterative method includes two ... -
Hybrid sparse linear array synthesis applied to phased antenna arrays
(2014-01-16)
Article
Accés restringit per política de l'editorialIn this letter, a new hybrid technique to synthesize sparse linear arrays is proposed. This technique is based on the combination of two methods. As a first method, a deterministic synthesis algorithm is used to resolve ... -
Impact of bias field screening and dipole length in terahertz photoconductive antennas
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Text en actes de congrés
Accés restringit per política de l'editorialA numerical approach for the modelling of dipole Photoconductive Antennas (PCAs) is presented, based on the classical Drude model with extension to include the bias field screening due to both the space charge and the THz ... -
Inverse Kinematics Using a Converging Paths Algorithm
(Springer Nature, 2020)
Text en actes de congrés
Accés restringit per política de l'editorialThis article presents a numerical method for the inverse kinematics of serial chains by utilizing dual quaternion formulation of the robot kinematics within a converging paths algorithm. The method is inspired by iterative ... -
Iterative method of moments solution of problems involving electrically large and concave geometries
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper presents a study of the scaling with frequency (computational complexity) of preconditioned iterative solution, using the Multilevel Fast Multipole Method, of a class of radiation and scattering problems that ... -
Maximum likelihood estimation of position in GNSS
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-05)
Article
Accés obertIn this letter, we obtain the Maximum Likelihood Estimator of position in the framework of Global Navigation Satellite Systems. This theoretical result is the basis of a completely different approach to the positioning ... -
Method of moments enhancement technique for the analysis of Sierpinski pre-fractal antennas
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2003-08-31)
Article
Accés obertThe numerical analysis of highly iterated Sierpinski microstrip patch antennas by method of moments (MoM) involves many tiny subdomain basis functions, resulting in a very large number of unknowns. The Sierpinski ... -
Mètodes iteratius per a la resolució d'equacions no lineals
(Universitat Politècnica de Catalunya, 2012-06-28)
Projecte/Treball Final de Carrera
Accés obertEl projecte consisteix en un estudi tant teòric com pràctic d'alguns dels mètodes iteratius sense memòria, emprats per la resolució d'equacions no lineals. Es plantegen i analitzen els cinc mètodes següents: Newton, Txebixev, ... -
Un método simplificado de Newton para calcular la raíz cuadrada de una matriz real simétrica definida positiva
(Universitat Politècnica de Catalunya, 2010)
Article
Accés obert -
Microwave imaging techniques for biomedical applications
(Vincenzo Piuri and Mario Savino, 1999)
Text en actes de congrés
Accés obertMicrowaves have been considered for medical applications involving the detection of organ movements and changes in tissue water content. More particularly cardiopulmonary interrogation via microwaves has resulted in various ... -
ML estimator and hybrid beamformer for multipath and interference mitigation in GNSS receivers
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-05-31)
Article
Accés obertThis paper addresses the estimation of the code-phase(pseudorange) and the carrier-phase of the direct signal received from a direct-sequence spread-spectrum satellite transmitter. The signal is received by an antenna ... -
Multiresolution hierarchy co-clustering for semantic segmentation in sequences with small variations
(Institute of Electrical and Electronics Engineers (IEEE), 2015)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper presents a co-clustering technique that, given a collection of images and their hierarchies, clusters nodes from these hierarchies to obtain a coherent multiresolution representation of the image collection. We ... -
Multiuser resource allocation optimization using bandwidth-power product in cognitive radio networks
(2013-03)
Article
Accés restringit per política de l'editorialIn this paper, the problem of resource allocation optimization is studied for a single-cell multiuser cognitive radio network in the presence of primary user networks. The spectral access of the cognitive radio network is ... -
Negative learning ant colony optimization for network alignment
(Association for Computing Machinery (ACM), 2022)
Text en actes de congrés
Accés obertThe Network Alignment problem is a hard Combinatorial Optimization problem with a wide range of applications, especially in computational biology. Given two (or more) networks, the goal is to find a mapping between their ... -
Nonlinear actuation model for lateral electrostatically-actuated DC-contact RF MEMS series switches.
(JOHN WILEY & SONS INC, 2007-06-01)
Article
Accés obertIn this work, a nonlinear model to predict actuation characteristics in lateral electrostatically-actuated DC-contact MEMS switches is proposed. In this case a parallel-plate approximation cannot be applied. The model ...