Exploració per tema "Matrius (Matemàtica)"

Ara es mostren els items 41-60 de 153

    • 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), ...

    • Estimation of web proxy response times in community networks using matrix factorization algorithms 

      Gómez Sánchez, Eduardo; Bores Quijano, Diego; Bote Lorenzo, Miguel Luís; Meseguer Pallarès, Roc (2020-01-01)
      Article
      Accés obert
      In community networks, users access the web using a proxy selected from a list, normally without regard to its performance. Knowing which proxies offer good response times for each client would improve the user experience ...

    • Estudio geométrico de familias diferenciales de parejas de motrices: deformaciones versales, cambios de base globales, estratificación de Brunovsky 

      García Planas, María Isabel (Universitat Politècnica de Catalunya, 1994-12-15)
      Tesi
      Accés obert
      Las ecuaciones de sistemas lineales de la forma: X'(S)= AX(S) + BU(S) O X (K+1) = AX (K) + BU (K) se identifican de manera natural con las parejas de matrices (A, B) modulo uno, relación de equivalencia que se corresponde ...

    • 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 obert
      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 (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, ...

    • 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, ...

    • 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 obert
      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 ...

    • Geometric structure of single/combined equivalence classes of a controllable pair 

      Compta Creus, Albert; Ferrer Llop, Josep; Peña Carrera, Marta (2011-11)
      Article
      Accés obert
      Given a pair of matrices representing a controllable linear system, its equivalence classes by the single or combined action of feedbacks, change of state and input variables, as well as their intersection are studied. ...

    • Geometric structure of the equivalence classes of a controllable pair 

      Peña Carrera, Marta; Compta Creus, Albert; Ferrer Llop, Josep (2010)
      Comunicació de congrés
      Accés obert
      Given a pair of matrices representing a controllable linear system, we study its equivalence classes by the single or combined action of feedbacks and change of state and input variables, as well as their intersections. ...

    • Green functions for boundary value problems on product networks 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Mitjana Riera, Margarida (2019)
      Text en actes de congrés
      Accés obert

    • Higher-Order Singular Systems and Polynomial Matrices 

      Magret Planas, Maria dels Dolors (2005)
      Article
      Accés obert
      There is a one-to-one correspondence between the set of quadruples of matrices defining singular linear time-invariant dynamical systems and a subset of the set of polynomial matrices. This correspondence preserves the ...