Ara es mostren els items 38405-38424 de 106223

  • Entropía aproximada móvil con valores de tolerancia fijos como medida de las variaciones de amplitud en señales biomédicas 

    Sarlabous Uranga, Leonardo; Torres Cebrián, Abel; Fiz Fernández, José Antonio; Gea Guiral, Joaquim; Martínez Llorens, Juana María; Jané Campos, Raimon; Morera Prat, Josep Maria (2011)
    Text en actes de congrés
    Accés obert
    En este trabajo se presenta un nuevo método para cuantificar las variaciones de amplitud en señales biomédicas empleando la entropía aproximada (ApEn) en ventanas móviles y con valores de tolerancia (r) fijos. Los valores ...
  • Entropía, memoria y prospectiva: la exploración de un borde paisajístico en la frontera noroeste de México 

    Peimbert, Alejandro J. (Università degli Studi Roma Tre / Centre de Política de Sòl i Valoracions, 2014-09)
    Text en actes de congrés
    Accés obert
    A 110 años de fundada, la ciudad de Mexicali cuenta con un paisaje que marca los contrastes entre la ciudad planeada, la ciudad construida y la ciudad habitada. Este enclave, es el único accidente topográfico de la ciudad ...
  • Entropy as a wear out indicator: The resistor example 

    Cuadras Tomàs, Àngel; Ovejas Benedicto, Victòria Júlia; Quílez Figuerola, Marcos (2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In this contribution we aim at proposing entropy measurements in resistive elements to characterize the induced damage due to current and Joule effect dissipation. 0.25 W off the shelf resistors are biased with constant ...
  • Entropy-based covariance determinant estimation 

    Cabrera Estanyol, Ferran de; Riba Sagarra, Jaume; Vázquez Grau, Gregorio (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    An information-theoretic approach is described to estimate the determinant of the covariance matrix of a random vector sequence (a common task in a wide range of estimation and detection problems in signal processing for ...
  • Entropy-based privacy against profiling of user mobility 

    Rodriguez Carrion, Alicia; Rebollo Monedero, David; Fornés Guardia, Jordi; Campo Vazquez, Celeste; García Rubio, Carlos; Parra Arnau, Javier; Das, Sajal K (2015-06-01)
    Article
    Accés obert
    Location-based services (LBSs) flood mobile phones nowadays, but their use poses an evident privacy risk. The locations accompanying the LBS queries can be exploited by the LBS provider to build the user profile of visited ...
  • Entropy characterisation of overstressed capacitors for lifetime prediction 

    Cuadras Tomàs, Àngel; Romero, Ramón; Ovejas Benedicto, Victòria Júlia (2016-12-30)
    Article
    Accés restringit per política de l'editorial
    We propose a method to monitor the ageing and damage of capacitors based on their irreversible entropy generation rate. We overstressed several electrolytic capacitors in the range of 33 µF–100 µF and monitored their entropy ...
  • Entropy Coding for Image Compression Based on Generalized Lifting and SPECK 

    Alameda i Pineda, Xavier (Universitat Politècnica de Catalunya, 2009-09)
    Projecte/Treball Final de Carrera
    Accés obert
    Image source coding became very important in the 80's. There were some key factors that helped to that data (image) compression revolution. First, the idea of digital image: an image composed by a set of niteprecision coe ...
  • Entropy methods for sumset inequalities 

    Espuny Díaz, Alberto (Universitat Politècnica de Catalunya, 2016-07)
    Projecte Final de Màster Oficial
    Accés obert
    In this thesis we present several analogies betweeen sumset inequalities and entropy inequalities. We offer an overview of the different results and techniques that have been developed during the last ten years, starting ...
  • Entropy of form and hierarchic organization 

    Wagensberg Lubinski, Jorge; Pastor Satorras, Romualdo (1992)
    Capítol de llibre
    Accés restringit per decisió de l'autor
    The use of the Theory of Information as a mathematical tool for the understanding of complex systems allows the application of the MaxEnt Principle as a criterion for the prediction of the final stationary states. The ...
  • Entwicklung eines abgaskühlers 

    Carrillo Forster, Roman (Universitat Politècnica de Catalunya, 2011-07-15)
    Projecte/Treball Final de Carrera
    Accés obert
    Realitzat a/amb:  Hochschule Darmstadt
    The project is part of a cooperation between Hyuandai GmbH and Ecokat, Ecokat is a company dedicated to the construction of catalytic converters and particulate filters for diesel engines. The testing of Ecokat catalysts ...
  • Entwicklung eines Multivariaten Prozessfähig-keitsindexes zur Bestimmung der erwarteten Na-charbeitsquote in Produktionsprozessen. Anwendung auf den Produktionsprozess des Variablen Ventiltriebs von BMW 

    Felipe Larrea, David-Tomás de (Universitat Politècnica de Catalunya / Technishe Universität München, 2013)
    Treball Final de Grau
    Accés restringit per decisió de l'autor
  • Entwicklung eines Systems zur Vermeidung obstruktiver Schlafapnoe 

    Falcón Rodríguez, Daniel (Universitat Politècnica de Catalunya / Technische Universität München, 2015)
    Projecte/Treball Final de Carrera
    Accés restringit per acord de confidencialitat
  • Entwicklung eines zerstörungsfreien Kollisionsschutzsystems für Motorspindeln 

    Serrahima Ortubia, Nacho (Universitat Politècnica de Catalunya / Technishe Universität Darmstadt, 2011)
    Projecte/Treball Final de Carrera
    Accés restringit per decisió de l'autor
    -Analysis of boundary conditions in a machine tool: Geometric relations. Cinematics and dynamics. Process magnitudes (Static and dynamic forces) -Definition of critical magnitudes in the power flow. -Definition of a detailed ...
  • Entwicklung von Platin-MMC Elektrodenwerkstoffen für Zündkerzen 

    Yedra Cardona, Lluís (Universitat Politècnica de Catalunya / Universität Saarlandes, 2008)
    Projecte/Treball Final de Carrera
    Accés restringit per acord de confidencialitat
    Pt/MeO and Ag/MeO composites were investigated regarding their arcing stability in single break operations. The following materials were used: Pt/ZrO2, Pt/Y2O3, Pt/MgO, Pt/Al2O3, Pt/YAM, Pt/SnO2, Pt/CeO2 and pure platinum; ...
  • Entwurf und Konstruktion einer Prüfvorrichtung zur Untersuchung von Kunststoffzahnrädern für einen Ölpumpenantrieb 

    Bou Romano, Josep Maria (Universitat Politècnica de Catalunya / Technishe Universität München, 2011)
    Projecte/Treball Final de Carrera
    Accés restringit per decisió de l'autor
    The noise behaviour of a single stage spur gear should be optimized with regard to the development of automatic transmission. The gear stage id used to drive an oil pump in an automatic transmission, which provides the ...
  • Enumeración de las especies nuevas del Eocénico de España 

    Bataller i Calatayud, Josep Ramon (ESAB, 1954)
    Article
    Accés obert
  • Enumerating simplicial decompositions of surfaces with boundaries 

    Bernardi, Olivier; Rué Perna, Juan José (2012-04-02)
    Article
    Accés obert
    It is well-known that the triangulations of the disc with n + 2 vertices on its boundary are counted by the nth Catalan number C(n) = 1 n+1 (2n n ) . This paper deals with the generalisation of this problem to any compact ...
  • Enumerating super edge-magic labelings for some types of path-like trees 

    López Masip, Susana Clara; Muntaner Batle, Francesc Antoni; Rius Font, Miquel (2010-06-02)
    Article
    Accés obert
    The main goal of this paper is to use a variation of the Kronecker product of matrices in order to obtain lower bounds for the number of non isomorphic super edge-magic labelings of some types of path-like trees. As a ...
  • Enumerating super edge-magic labelings for the union of non-isomorphic graphs 

    Ahmad, Ali; López Masip, Susana Clara; Muntaner Batle, Francesc Antoni; Rius Font, Miquel (2011-06-15)
    Article
    Accés obert
    A super edge-magic labeling of a graph G=(V,E) of order p and size q is a bijection f:V ∪E→{i}p+qi=1 such that: (1) f(u)+f(uv)+f(v)=k for all uv∈E; and (2) f(V )={i}pi=1. Furthermore, when G is a linear forest, the super ...
  • Enumeration and limit laws of dissections on a cylinder 

    Rué Perna, Juan José (2010-09-28)
    Article
    Accés obert
    We compute the generating function for triangulations on a cylinder, with the restriction that all vertices belong to its boundary and that the intersection of a pair of different faces is either empty, a vertex or an edge. ...