Enviaments recents

  • A stochastic version of the strategy-based congested transit assignment model and a technique by smoothing approximations 

    Codina Sancho, Esteve; Rosell Camps, Francisca (Springer, 2018)
    Article
    Accés restringit per política de l'editorial
    This paper develops a stochastic version for the strategybased congested transit assignment problem stated by Cominetti and Correa (Trans. Sci. 35(3):250-267, 2001). As a distinctive approach, this stochastic version takes ...
  • Exact calculation of network robustness 

    Lordan González, Oriol; Albareda Sambola, Maria (2019-03)
    Article
    Accés restringit per política de l'editorial
    Finding the most critical nodes regarding network connectivity has attracted the attention of many researchers in infrastructure networks, power grids, transportation networks and physics in complex networks. Static ...
  • Selecting significant effects in factorial designs: Lenth’s method versus the Box-Meyer approach 

    Xampeny Solani, Rafael; Grima Cintas, Pedro; Tort Martorell, X. (Taylor & Francis, 2018-01-01)
    Article
    Accés restringit per política de l'editorial
    The Lenth method is conceptually simple and probably the most common approach to analyzing the significance of the effects in factorial designs. Here, we compare it with a Bayesian approach proposed by Box and Meyer and ...
  • Uso de la cinta métrica larga en actividades de medida 

    López Beltrán, Mireia (2014-07)
    Article
    Accés restringit per política de l'editorial
    La mayoría de prácticas de medida de longitud que proponemos a nuestros alumnos involucran sólo el uso de la regla en un contexto de aula. Pero, aparte de este instrumento, los alumnos tendrán que saber usar otros como la ...
  • Introducción al lenguaje algebraico en un entorno de resolución de problemas 

    López Beltrán, Mireia (2018-07)
    Article
    Accés restringit per política de l'editorial
    La resolución de problemas y las tareas ricas nos brindan una magnífica oportunidad para la introducción y adquisición del lenguaje algebraico. En este trabajo presentamos una selección de actividades recogida en el blog ...
  • El problema dels ponts de Köningsberg: idees per a l’aula 

    López Beltrán, Mireia (Edicions de la Universitat de Barcelona, 2014-06)
    Article
    Accés obert
    Aprofitem el problema dels ponts de Köningsberg per plantejar a l’alumnat una situació contextualitzada que ens permet treballar diferents aspectes, curriculars o no, de les matemàtiques. A més, seguint directament el fil ...
  • Scratch: un recurs didàctic per a les classes de matemàtiques 

    López Beltrán, Mireia (Edicions de la Universitat de Barcelona, 2013-04)
    Article
    Accés obert
    En aquest article s’exposen diferents experiències didàctiques que s’han desenvolupat fent servir l’Scratch, per tal de crear projectes amb aquest llenguatge de programació adreçat als alumnes de primària i secundària, ...
  • High risk and probability of progression to osteoporosis at 10 years in HIV-infected individuals: the role of PIs 

    Negredo Puigmal, Eugènia; Langohr, Klaus; Bonjoch Badia, Anna; Pérez Álvarez, Nuria; Estany Quera, Carla; Puig, Jordi; Echevarría, Patricia; Clotet Sala, Bonaventura; Gómez Melis, Guadalupe (2018-09-01)
    Article
    Accés restringit per política de l'editorial
  • A branch-and-cut algorithm for the multidepot rural postman problem 

    Fernández Aréizaga, Elena; Laporte, Gilbert; Rodríguez Pereira, Jessica (2018-03)
    Article
    Accés obert
    This paper considers the Multidepot Rural Postman Problem, an extension of the classical Rural Postman Problem in which there are several depots instead of only one. The aim is to construct a minimum cost set of routes ...
  • Exact solution of hub network design problems with profits 

    Alibeyg, Armaghan; Contreras Aguilar, Ivan; Fernández Aréizaga, Elena (Elsevier, 2018-04-01)
    Article
    Accés restringit per política de l'editorial
    This paper studies hub network design problems with profits. They consider a profit-oriented objective that measure the tradeoff between the revenue due to served commodities and the overall network design and transportation ...
  • Using the R language to manage and show statistical information in the cloud 

    Fonseca Casas, Pau; Tormos, Raül (Multidisciplinary Digital Publishing Institute (MDPI), 2018-11-30)
    Article
    Accés obert
    We present a methodology to enable users to interact with the statistical information (survey data) of a public opinion institute which is stored in Cloud infrastructure. Mainly using R, this approach was developed following ...
  • Investigating the performance of SPSA in simulation-optimization approaches to transportation problems 

    Ros-Roca, Xavier; Montero Mercadé, Lídia; Schneck, Arne; Barceló, Jaume (Elsevier, 2018-11)
    Article
    Accés obert
    While optimization models play a key role in transportation analysis, the objective function to be optimized, however, cannot be defined analytically. It is therefore necessary to resort to non-differentiable optimization ...

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