Enviaments recents

  • Layer structure of De Bruijn and Kautz digraphs: an application to deflection routing 

    Fàbrega Canudas, José; Martí Farré, Jaume; Muñoz López, Francisco Javier (2016-10-17)
    Article
    Accés restringit per política de l'editorial
    In the main part of this paper we present polynomial expressions for the cardinalities of some sets of interest of the nice distance-layer structure of the well-known De Bruijn and Kautz digraphs. More precisely, given a ...
  • On the length and area spectrum of analytic convex domains 

    Martín, Pau; Ramírez Ros, Rafael; Tamarit Sariol, A. (2016-01)
    Article
    Accés obert
    Area-preserving twist maps have at least two different (p, q)-periodic orbits and every (p, q)-periodic orbit has its (p, q)-periodic action for suitable couples (p, q). We establish an exponentially small upper bound for ...
  • Structural aspects of Hamilton–Jacobi theory 

    Cariñena Marzo, José F.; Gràcia Sabaté, Francesc Xavier; Marmo, Giuseppe; Martínez Fernandez, Eduardo; Muñoz Lecanda, Miguel Carlos; Román Roy, Narciso (2016-02-01)
    Article
    Accés obert
    In our previous papers [11, 13] we showed that the Hamilton–Jacobi problem can be regarded as a way to describe a given dynamics on a phase space manifold in terms of a family of dynamics on a lower-dimensional manifold. ...
  • Temporal and spatial variations of global ionospheric total electron content under various solar conditions 

    Liu, Jingbin; Hernández Pajares, Manuel; Liang, Xinlian; An, Jiachun; Wang, Zemin; Chen, Ruizhi; Sun, Wei; Hyyppä, Juha (2016-12-09)
    Article
    Accés restringit per política de l'editorial
    By utilizing the numerical technique of principal component analysis (PCA), this work analyses temporal and spatial variations of the ionosphere under various solar conditions during the period 1999–2013. Applying the PCA ...
  • The Kernel Matrix Diffie-Hellman Assumption 

    Morillo Bosch, M. Paz; Rafols Salvador, Carla; Villar Santos, Jorge Luis (2016-12)
    Article
    Accés obert
    We put forward a new family of computational assumptions, the Kernel Matrix Diffie-Hellman Assumption. Given some matrix A sampled from some distribution D, the kernel assumption says that it is hard to find “in the exponent” ...
  • Integrated design of hybrid interstory-interbuilding multi-actuation schemes for vibration control of adjacent buildings under seismic excitations 

    Palacios Quiñonero, Francisco; Rubió Massegú, Josep; Rossell Garriga, Josep Maria; Karimi, Hamid Reza (Multidisciplinary Digital Publishing Institute, 2017-03-25)
    Article
    Accés obert
    The design of vibration control systems for the seismic protection of closely adjacent buildings is a complex and challenging problem. In this paper, we consider distributed multi-actuation schemes that combine interbuilding ...
  • The flow and solidification of a thin fluid film on an arbitrary three-dimensional surface 

    Myers, Timothy; Charpin, Jean P. F.; Chapman, Jonathan S (2002-08)
    Article
    Accés obert
    A model for the flow of a thin film, with and without solidification, on an arbitrary three-dimensional substrate is presented. The problem is reduced to two simultaneous partial differential equations for the film and ...
  • Multidimensional big data processing for damage detection in real pipelines using a smart pig tool 

    Ruiz Ordóñez, Magda; Mujica Delgado, Luis Eduardo; Alférez Baquero, Edwin Santiago; Quintero, Mario; Villamizar Mejía, Rodolfo (2016)
    Text en actes de congrés
    Accés obert
    The history of the hydrocarbons business in Colombia dates back to the early twentieth century where mining and energy sector has been one of the principal pillars for the its development. Thus, the pipelines currently in ...
  • Embedded piezodiagnostics for online structural damage detection based on PCA algorithm 

    Camacho-Navarro, Jhonatan; Ruiz Ordóñez, Magda; Villamizar Mejía, Rodolfo; Mujica Delgado, Luis Eduardo; Ariza, Fabian (2016)
    Text en actes de congrés
    Accés obert
    This work discusses a methodology used to implement a data-driven strategy for Structural Health Monitoring. First, the instrumentation of the equipment is detailed by describing the main components to be installed in the ...
  • Differentiability with respect to parameters in global smooth linearization 

    Rodrigues, Hildebrando M.; Solà-Morales Rubió, Joan de (2017-03-15)
    Article
    Accés restringit per política de l'editorial
    Let XX be a Banach space and T¿:X¿XT¿:X¿X a family of invertible contractions, T¿=L¿+f¿T¿=L¿+f¿, where L¿L¿ is linear and f¿f¿ is nonlinear with f¿(0)=0f¿(0)=0. We give conditions for the existence of a family of global ...

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