Now showing items 1-20 of 65

    • A graph signal processing solution for defective directed graphs 

      Barrufet Ribes, Júlia (Universitat Politècnica de Catalunya, 2020-06-29)
      Bachelor thesis
      Open Access
      Covenantee:   USC Viterbi School of Engineering
      The main purpose of this thesis is to nd a method that allows to systematically adapt GSP techniques so they can be used on most non-diagonalizable graph operators. In Chapter 1 we begin by presenting the framework in ...
    • A new subdivision algorithm for the flow propagation using polynomial algebras 

      Pérez Palau, Daniel; Gómez Muntané, Gerard; Masdemont Soler, Josep (2018-08-01)
      Article
      Open Access
      The Jet Transport method has emerged as a powerful tool for the numerical integration of ordinary differential equations; it uses polynomial expansions to approximate the flow map associated to the differential equation ...
    • A Random Features Model for Contextual Multi-armed Bandits with Non-linear Reward Function 

      Bernal Sagué, Sergi (Universitat Politècnica de Catalunya, 2020-06)
      Bachelor thesis
      24 months embargo
    • A semantics of business configurations using symbolic graphs 

      Mylonakis Pascual, Nicolás; Orejas Valdés, Fernando; Fiadeiro, José Luiz (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Conference report
      Open Access
      In this paper we give graph-semantics to a fundamental part of the semantics of the service modeling language SRML: business configurations. To achieve this goal we use symbolic graph transformation systems. We formalize ...
    • A survey on the computation of quaternions from rotation matrices 

      Sarabandi, Soheil; Thomas, Federico (ASME PRESS, 2019-04-01)
      Article
      Open Access
      The parameterization of rotations is a central topic in many theoretical and applied fields such as rigid body mechanics, multibody dynamics, robotics, spacecraft attitude dynamics, navigation, 3D image processing, computer ...
    • A weighted min-norm method with a recursive implementation 

      Duarte Ortigueira, Manuel; Lagunas Hernandez, Miguel A. (1990)
      Conference report
      Open Access
    • Advanced Spatial Temporal Regularization for Inverse Electrocardiography (ECG) 

      González Navarro, Paula (Universitat Politècnica de Catalunya, 2014-07-23)
      Bachelor thesis
      Open Access
      Covenantee:   Northeastern University
      [ANGLÈS] Heart diseases are the first cause of Mortality in the world. The percentage of the deceased who dies because of a cardiac infarction rises every year. Therefore, an early identification of typical signs may be ...
    • Algebraic simplification in computer algebra: an analysis of bottom-up algorithms 

      Cases Muñoz, Rafael; Fernández Camacho, María Inés; Steyaert, Jean-Marc (1988)
      External research report
      Open Access
      We consider a class of simplification algorithms for algebraic and logical expressions which are of systematic use in Computer Algebra systems. This class is basically characterized by the fact that algorithms operate in ...
    • Apuntes ACM2018 - Funciones de varias variables 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos (2018-03)
      External research report
      Open Access
    • Automorphism group of split Cartan modular curves 

      González Rovira, Josep (2016-08-01)
      Article
      Open Access
    • Álgebra de caminos aplicada al problema del mapeado de redes virtuales 

      Llorente Vives, Marc (Universitat Politècnica de Catalunya, 2016-07-06)
      Master thesis (pre-Bologna period)
      Open Access
      Network virtualization has many advantages to become the way forward in the Internet architec- ture by allowing the running of multiple virtual networks using a shared substrate network. Virtual networks are grouped in ...
    • Álgebra lineal y geometría para la ingeniería 

      García Planas, María Isabel (Maria Isabel Garcia Planas, 2011)
      Book
      Open Access
      Este libro recoge el material preparado para estudiantes de la asignatura de geometr´ıa de los cursos de grado de ingenier´ıa en tecnolog´ıas industriales, ingenier´ıa qu´ımica y grado de ingenier´ıa de materiales de la ...
    • Behavioural approach to modular system specification 

      Ehrig, Hartmut; Nivela Alós, M. Pilar Brígida; Orejas Valdés, Fernando (1988-07)
      External research report
      Open Access
      The algebraic approach to modular specifications as developed by the first author during the last five years is joined with the behavioural approach to algebraic specifications introduced recently by the last two authors. ...
    • Canonical realization of (2+1)-dimensional Bondi-Metzner-Sachs symmetry 

      Batlle Arnau, Carles; Campello, Víctor; Gomis Torné, Joaquin (2017-07-12)
      Article
      Open Access
      We construct canonical realizations of the (2+1)-dimensional Bondi-Metzner-Sachs (bms3) algebra as symmetry algebras of a free Klein-Gordon (KG) field in 2+1 dimensions for both massive and massless cases. We consider two ...
    • Characterizing identifying codes through the spectrum of a graph or digraph 

      Balbuena Martínez, Maria Camino Teófila; Dalfó Simó, Cristina; Martínez Barona, Berenice (2017)
      Conference report
      Open Access
    • Cohomología local con soporte un ideal monomial (D-módulos y combinatoria) 

      Álvarez Montaner, Josep (Edicions UPC, 2000)
      Conference report
      Restricted access - publisher's policy
      We study, by using the theory of algebraic D-modules, the local cohomology modules supported on a monomial ideal I of the polynomial ring R = k[x1, . . . , xn], where k is a field of characteristic zero. We compute the ...
    • Computation of numerical semigroups by means of seeds 

      Bras Amorós, Maria; Fernández González, Julio (2018-09-01)
      Article
      Open Access
      For the elements of a numerical semigroup which are larger than the Frobenius number, we introduce the definition of seed by broadening the notion of generator. This new concept allows us to explore the semigroup tree in ...
    • Constancy regions of mixed multiplier ideals in two-dimensional local rings with rational singularities 

      Alberich Carramiñana, Maria; Álvarez Montaner, Josep; Dachs Cadefau, Ferran (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2018)
      Article
      Open Access
      The aim of this paper is to study mixed multiplier ideals associated with a tuple of ideals in a two-dimensional local ring with a rational singularity. We are interested in the partition of the real positive orthant given ...
    • Description of characteristic non-hyperinvariant subspaces in GF(2) 

      Mingueza, David; Montoro López, María Eulalia; Pacha Andújar, Juan Ramón (Elsevier, 2013-12-16)
      Article
      Restricted access - publisher's policy
      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 ...
    • Development of a tensor algebra DSL for HPC platforms 

      Vilaseca Darne, Roger (Universitat Politècnica de Catalunya, 2020-10-26)
      Bachelor thesis
      Open Access
      En els darrers anys s'ha creat un nou model per generar llenguatges de domini específic anomenat Multi-Level IR, aquest model permet optimitzar les diferents representacions del codi. Per tal de provar aquest nou model, ...