Now showing items 1-20 of 106

  • A branch-and-price algorithm for the Aperiodic Multi-Period Service Scheduling Problem 

    Fernández Aréizaga, Elena; Kalcsics, Jörg; Núñez del Toro, Alma Cristina (Elsevier, 2017-12-16)
    Article
    Restricted access - publisher's policy
    This paper considers the multi-period service scheduling problem with an aperiodic service policy. In this problem, a set of customers who periodically require service over a finite time horizon is given. To satisfy the ...
  • Achieving timing composability with measurement-based probabilistic timing analysis 

    Kosmidis, Leonidas; Quiñones, Eduardo; Abella Ferrer, Jaume; Vardanega, Tulio; Cazorla Almeida, Francisco Javier (2013)
    Conference report
    Restricted access - publisher's policy
    Probabilistic Timing Analysis (PTA) allows complex hardware acceleration features, which defeat classic timing analysis, to be used in hard real-time systems. PTA can do that because it drastically reduces intrinsic ...
  • Active learning in Crowdsourcing classification problems using Sampling Theory for graph signals 

    Maroto Morales, Javier Alejandro (Universitat Politècnica de Catalunya, 2017-05-15)
    Bachelor thesis
    Open Access
    Covenantee:  University of Southern California
  • Adapting TDMA arbitration for measurement-based probabilistic timing analysis 

    Panic, Milos; Abella, Jaume; Quiñones, Eduardo; Hernandez, Carles; Ungerer, Theo; Cazorla, Francisco J. (Elsevier, 2017-07)
    Article
    Open Access
    Critical Real-Time Embedded Systems require functional and timing validation to prove that they will perform their functionalities correctly and in time. For timing validation, a bound to the Worst-Case Execution Time ...
  • An algebraic framework for Diffie-Hellman assumptions 

    Escala Ribas, Alex; Herold, Gottfried; Kiltz, Eike; Ràfols Salvador, Carla; Villar Santos, Jorge Luis (2017-01)
    Article
    Open Access
    We put forward a new algebraic framework to generalize and analyze Di e-Hellman like Decisional Assumptions which allows us to argue about security and applications by considering only algebraic properties. Our D`;k-MDDH ...
  • An efficient and numerically stable method for computing interval availability distribution bounds 

    Carrasco, Juan A. (2009-09-15)
    External research report
    Open Access
    The paper develops a method, called bounding regenerative transformation, for the computation with numerical stability and well-controlled error of bounds for the interval availability distribution of systems modeled by ...
  • Application of bayesian networks to assess water poverty 

    Giné Garriga, Ricard; Pérez Foguet, Agustí; Molina, J. L.; Bromley, John (Centro Internacional de Métodos Numéricos en Ingeniería (CIMNE), 2009-10)
    Conference report
    Open Access
    The conventional approaches to water assessment are inappropriate for describing the increasing complexity of water issues. Instead, an integrated and holistic framework is required to capture the wide range of aspects ...
  • Association between time to reperfusion and outcome is primarily driven by the time from imaging to reperfusion 

    Ribó, Marc; Molina, Carlos A.; Cobo Valeri, Erik; Cerda, Neus; Tomasello, Alejandro; Urra, Xabier; Sanroman, Luis; Dávalos Errando, Antoni; Jovin, Tudor G. (2016-04-01)
    Article
    Open Access
    Background and Purpose A progressive decline in the odds of favorable outcome as time to reperfusion increases is well known. However, the impact of specific workflow intervals is not clear.; Methods We studied the mechanical ...
  • A structural approach including the behavior of collagen cross-links to model patient-specific human carotid arteries 

    Sáez Viñas, Pablo; Peña, Estefanía; Martínez, Miguel Angel (2014)
    Article
    Open Access
    The objective of this work is to develop a remodeling model for biological matter coupling two different processes in a 3D framework: reorientation of the preferential direction of a given fibered structure and reorientation ...
  • A theoretical model of the endothelial cell morphology due to different waveforms 

    Sáez Viñas, Pablo; Malve, M.; Martínez, M.A. (2015-08)
    Article
    Open Access
    Endothelial cells are key units in the regulatory biological process of blood vessels. They represent an interface to transmit variations on the fluid dynamic changes. They are able to adapt its cytoskeleton, by means of ...
  • Atmospheric-turbulence-induced power-fade statistics for a multiaperture optical receiver 

    Belmonte Molina, Aniceto; Comerón Tejero, Adolfo; Rubio, Juan Antonio; Fernández (OPTICAL SOC AMER, 1997-01-31)
    Article
    Open Access
    To estimate the probability distributions of power fades, we consider two basic types of disturbance in electromagnetic wave propagation through atmospheric turbulence: wave-front intensity fluctuations and wave-front ...
  • A two-phase solution algorithm for the Flexible Periodic Vehicle Routing Problem 

    Archetti, Claudia; Fernández Aréizaga, Elena; Huerta Muñoz, Diana Lucia (2018-11-01)
    Article
    Restricted access - publisher's policy
    The Flexible Periodic Vehicle Routing Problem is the problem of visiting a given set of customers considering a certain periodicity to attend their demands. It is a generalization of the Periodic Vehicle Routing Problem ...
  • Automatic differentiation in probabilistic machine learning with variational inference 

    Pou Quirós, Alberto (Universitat Politècnica de Catalunya, 2017-07-06)
    Master thesis
    Open Access
    La era tecnológica que se vive actualmente está dando lugar a cantidades ingentes de información que requieren ser analizadas de forma automática. El machine learning puede ayudar a mitigar esta sobrecarga encontrando patrones ...
  • A web-based learning tool improves student performance in statistics: a randomized masked trial 

    González Alastrué, José Antonio; Jover, Lluís; Cobo Valeri, Erik; Muñoz Gracia, María del Pilar (2010-03)
    Article
    Open Access
    Background: e-status is a web-based tool able to generate different statistical exercises and to provide immediate feedback to students’ answers. Although the use of Information and Communication Technologies (ICTs) is ...
  • A white-matter pathways extraction toolbox in Semantic Dementia 

    Montal Blancafort, Victor (Universitat Politècnica de Catalunya, 2015-05)
    Bachelor thesis
    Restricted access - author's decision
    [ANGLÈS] Neuroimaging techniques allow us to, processing Magnetic Resonance Imaging signals, understand the brain in a way we ever could image. With the tractorgaphy neuroimaging technique, we can extract the white-matter ...
  • Bayesian estimation of the orthogonal decomposition of a contingency table 

    Ortego Martínez, María Isabel; Egozcue Rubí, Juan José (2015)
    Conference report
    Open Access
    Contingency tables can be parametrized by probabilities of each cell in a multinomial sampling. These probabilities constitute the joint probability function of the two or more discrete random categorical variables. These ...
  • Bayesian trend analysis for daily rainfall series of Barcelona 

    Ortego Martínez, María Isabel; Gibergans Bàguena, José; Tolosana Delgado, Raimon; Egozcue Rubí, Juan José; Llasat Botija, Maria Carmen (2010-07-15)
    Article
    Open Access
    A Point-Over-Threshold approach using a reparameterization of the Generalized Pareto Distribution (GPD) has been used to assess changes in the daily rainfall Barcelona series (1854–2006). A Bayesian approach, considering ...
  • Bayes linear spaces 

    Van den Boogaart, Karl Gerald; Egozcue, Juan José; Pawlowsky Glahn, Vera (Institut d'Estadística de Catalunya, 2010)
    Article
    Open Access
    Linear spaces consisting of -finite probability measures and infinite measures (improper priors and likelihood functions) are defined. The commutative group operation, called perturbation, is the updating given by Bayes ...
  • Between logic and probability 

    Sales Porta, Ton (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1994)
    Article
    Open Access
    Logic and Probability, as theories, have been developed quite independently and, with a few exceptions (like Boole's), have largely ignored each other. And nevertheless they share a lot of similarities, as well a considerable ...
  • BicingStats 

    Carol Campreciós, Alejandro (Universitat Politècnica de Catalunya, 2016-09-14)
    Master thesis (pre-Bologna period)
    Open Access
    Implementació d'un sistema de predicció de l'ocupació de estacions de Bicing i d'una app Android que mostra aquests resultats a l'usuari.