Ara es mostren els items 565-584 de 753

    • Obtención de la estructura ósea del pie al aplicar la umbralización global y la adaptativa 

      Ortega, D.R.; Gutiérrez, G.; Iznaga, A.M.; Rodríguez, T.; Beule, M. de (Universitat Politècnica de Catalunya. CIMNE, 2015)
      Article
      Accés obert
      La descripción del comportamiento mecánico de tejidos duros mediante el empleo de modelos discretos pasa por diferentes etapas de análisis, que van desde el procesamiento digital de la imagen hasta la especificación de las ...
    • Obtenção de um modelo de elementos finitos simplificado para representação de juntas rebitadas em análise dinâmica de estruturas usando uma ferramenta de updating 

      Dourado, M.; Meireles, J. (Universitat Politècnica de Catalunya. CIMNE, 2016)
      Article
      Accés obert
      Neste artigo é proposto um modelo de elementos finitos simplificado para representação de juntas rebitadas em análise dinâmica de estruturas. O rebite é modelado com elementos que combinam mola e amortecedor. Vários modelos ...
    • On a conjecture on the order of cages with a given girth pair 

      Balbuena Martínez, Maria Camino Teófila; Salas, J (2015-08-20)
      Article
      Accés restringit per política de l'editorial
      A (k; g, h)-graph is a k-regular graph of girth pair (g, h) where g is the girth of the graph, h is the length of a smallest cycle of different parity than g and g < h. A (k; g, h)-cage is a (k; g, h)-graph with the least ...
    • On a Moser-Steffensen type method for nonlinear systems of equations 

      Amat Plata, Sergio; Grau Sánchez, Miguel; Hernández Verón, Miguel Angel; Rubio, María Jesús (2016-12)
      Article
      Accés obert
      This paper is devoted to the construction and analysis of a Moser–Steffensen iterative scheme. The method has quadratic convergence without evaluating any derivative nor inverse operator. We present a complete study of the ...
    • On approximating shortest paths in weighted triangular tessellations 

      Bose, Prosenjit; Esteban Pascual, Guillermo; Orden Martin, David; Silveira, Rodrigo Ignacio (Springer, 2022)
      Text en actes de congrés
      Accés obert
      We study the quality of weighted shortest paths when a continuous 2-dimensional space is discretized by a weighted triangular tessellation. In order to evaluate how well the tessellation approximates the 2-dimensional ...
    • On approximating shortest paths in weighted triangular tessellations 

      Bose, Prosenjit; Esteban Pascual, Guillermo; Orden Martin, David; Silveira, Rodrigo Ignacio (2023-05-01)
      Article
      Accés obert
      We study the quality of weighted shortest paths when a continuous 2-dimensional space is discretized by a weighted triangular tessellation. In order to evaluate how well the tessellation approximates the 2-dimensional ...
    • On computational order of convergence of some multi-precision solvers of nonlinear systems of equations 

      Grau Sánchez, Miguel; Grau Gotés, Maria Àngela; Díaz Barrero, José Luis (2011-05-02)
      Report de recerca
      Accés obert
      In this paper the local order of convergence used in iterative methods to solve nonlinear systems of equations is revisited, where shorter alternative analytic proofs of the order based on developments of multilineal ...
    • On the application of two-fluid flows solver to the casting problem 

      Kamran, Kazem; Rossi, Riccardo; Dadvand, Pooyan; Idelsohn Barg, Sergio Rodolfo (Springer, 2014)
      Capítol de llibre
      Accés restringit per política de l'editorial
      This book presents and discusses mathematical models, numerical methods and computational techniques used for solving coupled problems in science and engineering. It takes a step forward in the formulation and solution of ...
    • On the error term of the logarithm of the lcm of quadratic sequences 

      Rué Perna, Juan José; Sarka, Paulius; Zumalacárregui, Ana (2013-01-09)
      Article
      Accés obert
      We study the logarithm of the least common multiple of the sequence of integers given by 12 + 1, 2 2 + 1, . . . , n2 + 1. Using a result of Homma [4] on the distribution of roots of quadratic polynomials modulo primes we ...
    • On the extension of LES methods from incompressible to compressible turbulent flows with application to turbulent channel flow 

      Pedro Costa, Juan Bautista; Baez Vidal, Aleix; Lehmkuhl Barba, Oriol; Pérez Segarra, Carlos David; Oliva Llena, Asensio (Institute of Physics (IOP), 2016)
      Text en actes de congrés
      Accés obert
      The objective of the present work is to validate the compressible Large-Eddy Simulation (LES) models implemented in the in house parallel unstructured CFD code TermoFluids. Our research team has implemented and tested ...
    • On the Galois correspondence theorem in separable Hopf Galois theory 

      Crespo Vicente, Teresa; Río Doval, Ana; Vela del Olmo, Maria Montserrat (2016-01)
      Article
      Accés obert
      In this paper we present a reformulation of the Galois correspondence theorem of Hopf Galois theory in terms of groups carrying farther the description of Greither and Pareigis. We prove that the class of Hopf Galois ...
    • On the metric representation of the vertices of a graph 

      Mora Giné, Mercè; Puertas González, María Luz (2023-09-12)
      Article
      Accés restringit per política de l'editorial
      The metric representation of a vertex u in a connected graph G respect to an ordered vertex subset is the vector of distances . A vertex subset W is a resolving set of G if , for every with . Thus, a resolving set with n ...
    • On the modeling of patient-specific transcatheter aortic valve replacement: a fluid–structure interaction approach 

      Luraghi, Giulia; Migliavacca, Francesco; García González, Alberto; Chiastra, Claudio; Rossi, Alexia; Cao, Davide; Stefanini, Giulio; Rodríguez Matas, José Félix (Springer, 2019-09-01)
      Article
      Accés obert
      Purpose Transcatheter aortic valve replacement (TAVR) is a minimally invasive treatment for high-risk patients with aortic diseases. Despite its increasing use, many influential factors are still to be understood and require ...
    • On the net displacement of contact surface centroid in contractile bodies 

      Muñoz Romero, José; Condamin, Lucie; Doste Poy, David (2022-01-01)
      Article
      Accés obert
      We investigate the motion of the contact surface centroid for contractile bodies on substrates with a viscous friction law and when inertial forces are negligible. We deduce a set of sufficient conditions that ensure that ...
    • On the optimization of bipartite secret sharing schemes 

      Farràs Ventura, Oriol; Metcalf-Burton, Jessica Ruth; Padró Laimon, Carles; Vázquez González, Leonor (2012-05-01)
      Article
      Accés obert
      Optimizing the ratio between the maximum length of the shares and the length of the secret value in secret sharing schemes for general access structures is an extremely difficult and long-standing open problem. In this ...
    • On the Oß-hull of a planar point set 

      Alegría Galicia, Carlos; Orden, David; Seara Ojea, Carlos; Urrutia Galicia, Jorge (2018-03-01)
      Article
      Accés obert
      We study the Oß-hull of a planar point set, a generalization of the Orthogonal Convex Hull where the coordinate axes form an angle ß. Given a set P of n points in the plane, we show how to maintain the Oß-hull of P while ...
    • On the parallelization of stellar evolution codes 

      Martin Rodriguez, David; José Pont, Jordi; Longland, Richard Leigh (Springer (Biomed Central Ltd.), 2018-11-01)
      Article
      Accés obert
      Multidimensional nucleosynthesis studies with hundreds of nuclei linked through thousands of nuclear processes are still computationally prohibitive. To date, most nucleosynthesis studies rely either on hydrostatic/hydrodynamic ...
    • On the robustness of the multigrid method combining ILU and Partial Weight applied in an orthotropic diffusion problem 

      Vassoler Rutz, Grazielli; Villela Pinto, Marcio Augusto; Gonçalves, Simone de Fátima Tomazzoni (Universitat Politècnica de Catalunya. CIMNE, 2019)
      Article
      Accés obert
      This paper proposes an efficient and robust algorithm for solving a physical orthotropy problem. The algorithm is based on choosing the most efficient restriction operator and on an incomplete LU decomposition suited for ...
    • On the stability of oscillations in rheological models with delay and viscous friction during morphogenesis 

      Muñoz Romero, José (2022)
      Text en actes de congrés
      Accés obert
    • Online matching in regular bipartite graphs with randomized adversary 

      Fàbrega Canudas, José; Muñoz López, Francisco Javier (Springer, 2018-08)
      Capítol de llibre
      Accés restringit per política de l'editorial