Parcourir par sujet "Matrix algebra"
Voici les éléments 1-20 de 32
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Band Preconditioners for Non-Symmetric Real Toeplitz Systems with Unknown Generating Function
(2021)Toeplitz systems appear in a variety of applications in real life such as signal processing, image processing and restoration and discretization of PDEs. The fast convergence to the accurate solution of the system seems ... -
Bayesian uncertainty quantification and propagation using adjoint techniques
(2014)This paper presents the Bayesian inference framework enhanced by analytical approximations for uncertainty quantification and propagation and parameter estimation. A Gaussian distribution is used to approximate the posterior ... -
Bayesian uncertainty quantification of turbulence models based on high-order adjoint
(2015)The uncertainties in the parameters of turbulence models employed in computational fluid dynamics simulations are quantified using the Bayesian inference framework and analytical approximations. The posterior distribution ... -
Bounds on the Spectral Radius of Nonnegative Matrices
(2020)In this paper, we determine some new bounds for the spectral radius of a nonnegative matrix with respect to the upper and the lower bounds for the spectral radius given by Frobenius' bounds, by using similarity transformations. ... -
Characterization of the allowable perturbations for disturbance rejection and data sensitivity
(1996)In this paper the problem of disturbance rejection and data sensitivity is studied for the case of linear time invariant systems. Using a proportional state feedback law, the necessary and sufficient conditions for the ... -
Comparison of three classes of algorithms for the solution of the linear complementarity problem with an H+-matrix
(2018)There are three main classes of iterative methods for the solution of the linear complementarity problem (LCP). In order of appearance these classes are: the “projected iterative methods”, the “(block) modulus algorithms” ... -
Decoupling of singular systems via P-D feedback
(1996)The problem of input-output decoupling of singular systems via proportional plus derivative (P-D) feedback is solved. The necessary and sufficient condition for the problem to have a solution is established. A special ... -
Design Space Exploration of a Sparse MobileNetV2 Using High-Level Synthesis and Sparse Matrix Techniques on FPGAs
(2022)Convolution Neural Networks (CNNs) are gaining ground in deep learning and Artificial Intelligence (AI) domains, and they can benefit from rapid prototyping in order to produce efficient and low-power hardware designs. The ... -
Disturbance decoupling of singular systems via P-D feedback
(1999)The problem of disturbance decoupling of singular systems via proportional plus derivative (P-D) feedback is solved. The necessary and sufficient condition for the problem to be solvable is established as a rank condition ... -
Efficient linear system solution techniques in the simulation of large dense mutually inductive circuits
(2019)The verification of integrated Circuits (ICs) in deep submicron technologies requires that all mutual inductive effects are taken into account to properly validate the performance and reliable operation of the chip. However, ... -
Elliptical higher rank numerical range of some Toeplitz matrices
(2018)The higher rank numerical range is described for a class of matrices which happen to be unitarily reducible to direct sums of (at most) 2-by-2 blocks. In particular, conditions are established under which tridiagonal ... -
From undirected structures to directed graphical lasso fuzzy cognitive maps using ranking-based approaches
(2020)Fuzzy cognitive maps (FCMs) have gained popularity within the scientific community due to their capabilities in modelling and decision making for complex problems. However, learning FCM models automatically from data without ... -
Generalized Hankel matrix for the minimal realization of singular systems
(1996)A generalized Hankel matrix (in pencil form) is introduced. Based upon this definition the dimension of the minimal realization and the controllability and observability properties are related in a straight forward way. ... -
Hydrodynamics and near trapping effects in arrays of multiple elliptical cylinders in waves
(2018)The purpose of the present study is the investigation of the hydrodynamic interactions induced by arrays of elliptical cylinders subjected to regular waves. The solution methodology employs linear potential theory and is ... -
Incremental variational procedure for elasto-viscoplastic composites and application to polymer- and metal-matrix composites reinforced by spheroidal elastic particles
(2016)This paper presents an alternative formulation of the incremental variational procedure (IVP) of Lahellec and Suquet (2013) to estimate the macroscopic response and field statistics in elasto-viscoplastic composites. The ... -
Joint Estimation of the Number of Antennas and AoA of a Wireless Communication Transmitter
(2022)Estimating various parameters of a wirelessly transmitted information-bearing signal, besides the information itself, is essential for a number of applications (e.g. military finger-printing, localization, radio-astronomy, ... -
k–step Fibonacci sequences and Fibonacci matrices
(2017)In this paper, the powers of the Fibonacci matrices are investigated and closed formulas for their entries are derived, related to the suitable terms of the k− step Fibonacci sequences in order to develop the properties ... -
Multi-channel non-negative matrix factorization for overlapped acoustic event detection
(2018)In this paper, we propose two multi-channel extensions of non-negative matrix factorization (NMF) for acoustic event detection. The first method performs decision fusion on the activation matrices produced from independent ... -
Multi-objective optimization of quarter car models with passive and semi-active suspensions
(2004)A methodology is presented for optimising the suspension damping and stiffness parameters of quarter car models, subjected to road excitation. First, models involving passive damping with constant or dual rate characteristics ... -
A Multirate Fully Parallel LDPC Encoder for the IEEE 802.11n/ac/ax QC-LDPC Codes Based on Reduced Complexity XOR Trees
(2021)This article proposes an encoding method based on a two-step encoding algorithm for the 12 quasi-cyclic (QC)-low-density parity-check (LDPC) (QC-LDPC) codes specified in the IEEE 802.11n/ac/ax standards. The proposed ...