Ara es mostren els items 21-40 de 118

  • Coprime factorization of the transfer matrix of a singular linear systems 

    García Planas, María Isabel; López Cabeceira, Montserrat (Universidad de León, 2011)
    Text en actes de congrés
    Accés obert
  • Cyclic codes as hyperinvariant subspaces 

    García Planas, María Isabel; Magret Planas, Maria dels Dolors; Montoro López, Maria Eulalia (2013)
    Text en actes de congrés
    Accés obert
    It is known the relationship between cyclic codes and invariant subspaces. We present in this work some codes which are obtained from invariant and hyperinvariant subspaces of the linear maps having associated matrices, ...
  • Description of characteristic non-hyperinvariant subspaces over the field GF(2) 

    Mingueza, David; Montoro López, María Eulalia; Pacha Andújar, Juan Ramón (Elsevier, 2013-10-26)
    Article
    Accés restringit per política de l'editorial
    Given a square matrix A, an A-invariant subspace is called hyperinvariant (respectively, characteristic) if and only if it is also invariant for all matrices T (respectively, nonsingular matrices T) that commute with A. ...
  • Desigualtats matricials lineals amb valors complexos 

    Rubió Massegú, Josep; Palacios Quiñonero, Francisco; Rossell Garriga, Josep Maria (2015-07-12)
    Report de recerca
    Accés obert
    Sovint ens trobem davant de desigualtats matricials lineals (LMIs) on les matrius involucrades prenen valors complexos. Es ben conegut que tota LMI complexa es pot reduir a una LMI real. En aquest treball establim les ...
  • Discrete trace function and Poincaré inequality for the study of some linear systems 

    Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Mitjana Riera, Margarida (2019)
    Text en actes de congrés
    Accés obert
  • Diseño y cálculo de una matriz progresiva para realizar una garra pasacables por estampación en frío 

    Mariné Arce, Alberto (Universitat Politècnica de Catalunya, 2012-02)
    Projecte/Treball Final de Carrera
    Accés obert
    Se trata de realizar el diseño y cálculo de una matriz progresiva de 9 estaciones o pasos con el fin de obtener una garra metálica pasa cables. El plano de la pieza viene definido por el cliente, lo que nos definirá que ...
  • Eigenvalues and eigenvectors of monomial matrices 

    García Planas, María Isabel; Magret Planas, Maria dels Dolors (Universidad de Cádiz, 2015)
    Text en actes de congrés
    Accés obert
    Spectral properties of special matrices matrices have been widely applied. We focus on monomial matrices over a finite field $F_{p}$, $p \neq 2$. We describe a way to find the minimal annihilating polynomial, a set of ...
  • Emergent Group Properties in Financial Markets 

    Doria Arrieta, Omar Alonso (Universitat Politècnica de Catalunya, 2011-06-17)
    Projecte Final de Màster Oficial
    Accés obert
    In the present we have analyzed the data from 480 companies of the S&P500 using the Random Matrix Theory and the Inverse Participation Ratio, we analyzed the eigenvalues and its respective eigenvectors in order to find ...
  • Estimación de la rigidez de estructuras de mampostería confinada a partir de datos dinámicos 

    Garcés, Francisco; Lafuente, Marianela; Genatios, Carlos; Mebarki, Ahmed (Universitat Politècnica de Catalunya, 2006)
    Article
    Accés obert
    En este trabajo se presenta la aplicación de un método de estimación de la rigidez a estructuras de baja altura compuestas por muros de mampostería confinada. El método estima la rigidez a cortante (GA) y a flexión (EI), ...
  • Estudio y evaluación de eficiencia de operaciones con matrices dispersas (sparse) en sistemas distribuidos 

    Raimbaud, Pierre (Universitat Politècnica de Catalunya, 2014-06-20)
    Treball Final de Grau
    Accés obert
    [CASTELLÀ] El objetivo de ese proyecto es estudiar y evaluar, en sistemas distribuidos, la eficiencia de operaciones con matrices dispersas (sparse), sabiendo la forma en la cual están almacenadas y los algoritmos usados, ...
  • Explicit inverse of nonsingular Jacobi matrices 

    Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (2019-06-30)
    Article
    Accés restringit per política de l'editorial
    We present here the necessary and sufficient conditions for the invertibility of tridiagonal matrices, commonly named Jacobi matrices, and explicitly compute their inverse. The techniques we use are related with the solution ...
  • Factorization of the transfer matrix of a singular linear systems 

    García Planas, María Isabel; López Cabeceira, M. Montserrat (IPACS Electrinic Library, 2011)
    Capítol de llibre
    Accés restringit per política de l'editorial
    Given a linear dynamic time invariant represented by x + ( t ) = Ax ( t ) Bu ( t ) , y ( t ) = Cx ( t ) , we analyze con- ditions for obtention of a coprime factorization of trans- fer matrices of ...
  • Feasibility issues in static output-feedback controller design with application to structural vibration control 

    Palacios Quiñonero, Francisco; Rubió Massegú, Josep; Rossell Garriga, Josep Maria; Karimi, Hamid Reza (2014-01)
    Article
    Accés obert
    Recent results in output-feedback controller design make possible an efficient computation of static output-feedback controllers by solving a single-step LMI optimization problem. This new design strategy is based on a ...
  • From subkautz digraphs to cyclic kautz digraphs 

    Dalfó Simó, Cristina (2018-06-01)
    Article
    Accés obert
    Kautz digraphs K(d,l) are a well-known family of dense digraphs, widely studied as a good model for interconnection networks. Closely related with these, the cyclic Kautz digraphs CK(d,l) were recently introduced by Böhmová, ...
  • From subKautz digraphs to cyclic Kautz digraphs 

    Dalfó Simó, Cristina (2017)
    Report de recerca
    Accés obert
    Kautz digraphs K(d,l) are a well-known family of dense digraphs, widely studied as a good model for interconnection networks. Closely related with these, the cyclic Kautz digraphs CK(d,l) were recently introduced by Böhmová, ...
  • Funçôes de base hierárquicas para a versâo-p do método de elementos finitos 

    Costa Nogueira Junior, Alberto; Bittencourt, Marco Lucio (Universitat Politècnica de Catalunya, 2001)
    Article
    Accés obert
    O presente trabalho realiza um estudo comparativo entre funçôes de base hierárquicas associadas a elementos triangulares e tetraédricos. Discute-se, a partir da análise das propriedades de esparsidade e condicionamento das ...
  • Generalization of Roth's solvability criteria to systems of matrix equations 

    Dmytryshyn, Andrii; Futorny, Vyacheslav; Klymchuk, Tetiana; Sergeichuk, Vladimir V. (Elsevier, 2017-08-15)
    Article
    Accés restringit per política de l'editorial
    W.E. Roth (1952) proved that the matrix equation AX-XB=C has a solution if and only if the matrices View the MathML source and View the MathML source are similar. A. Dmytryshyn and B. Kågström (2015) extended Roth's criterion ...
  • Generalized selection of complementary matrices in the inclusion principle 

    Bakule, Lubomir; Rodellar Benedé, José; Rossell Garriga, Josep Maria (2000-06)
    Article
    Accés obert
    This paper presents a strategy for choosing complementary matrices in the framework of the inclusion principle with state LQ optimal control of LTI systems, it is based on translating the basic restrictions given by the ...
  • Generalizing the bottleneck matrix 

    Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Mitjana Riera, Margarida; Monsó Burgués, Enrique P.J. (2019)
    Text en actes de congrés
    Accés obert
    Given the Laplacian matrix associated to a weighted graph and given x a single vertex of it, the bottleneck matrix (related to x) is the inverse matrix of the sub matrix of the Laplacian obtained by eliminating the row ...
  • Geometric classification of monogenic subspaces and uniparametric linear control systems 

    Compta Creus, Albert; Ferrer Llop, Josep (Taylor & Francis, 2015)
    Article
    Accés obert
    We present a geometric approach to the classification of monogenic invariant subspaces, alternative to the classical algebraic one, which allows us to obtain several matricial canonical forms for each class. Some applications ...