Enviaments recents

  • Taking advantage of unexpected WebCONSORT results 

    Cobo Valeri, Erik; González Alastrué, José Antonio (2016)
    Article
    Accés obert
    To estimate treatment effects, trials are initiated by randomising patients to the interventions under study and finish by comparing patient evolution. In order to improve the trial report, the CONSORT statement provides ...
  • Hub network design problems with profits 

    Alibeyg, Armaghan; Contreras Aguilar, Ivan; Fernández Aréizaga, Elena (2016-12-01)
    Article
    Accés restringit per política de l'editorial
    This paper presents a class of hub network design problems with profit-oriented objectives, which extend several families of classical hub location problems. Potential applications arise in the design of air and ground ...
  • Introducing capacitaties in the location of unreliable facilities 

    Albareda Sambola, Maria; Landete, Mercedes; Monge Ivars, Juan Francisco; Sainz Pardo, José Luis (Elsevier, 2017-05-16)
    Article
    Accés restringit per política de l'editorial
    The goal of this paper is to introduce facility capacities into the Reliability Fixed-Charge Location Problem in a sensible way. To this end, we develop and compare different models, which represent a tradeoff between the ...
  • Interior-point solver for convex separable block-angular problems 

    Castro Pérez, Jordi (2016-01)
    Article
    Accés obert
    Constraints matrices with block-angular structures are pervasive in optimization. Interior-point methods have shown to be competitive for these structured problems by exploiting the linear algebra. One of these approaches ...
  • A cutting-plane approach for large-scale capacitated multi-period facility location using a specialized interior-point method 

    Castro Pérez, Jordi; Nasini, Stefano; Saldanha da Gama, Francisco (2016-09-19)
    Article
    Accés restringit per política de l'editorial
    We propose a cutting-plane approach (namely, Benders decomposition) for a class of capacitated multi-period facility location problems. The novelty of this approach lies on the use of a specialized interior-point method ...
  • A mathematical programming approach for different scenarios of bilateral bartering 

    Nasini, Stefano; Castro Pérez, Jordi; Fonseca Casas, Pau (Institut d'Estadística de Catalunya, 2015-01-01)
    Article
    Accés obert
    The analysis of markets with indivisible goods and fixed exogenous prices has played an important role in economic models, especially in relation to wage rigidity and unemployment. This paper provides a novel mathematical ...
  • Importancia de la potencia y la hipótesis en el valor p 

    Cortés Martínez, Jordi; Casals, Martí; Langohr, Klaus; González Alastrué, José Antonio (Elsevier, 2015-12-09)
    Article
    Accés obert
    Los lectores de Medicina Clínica conocen bien la importancia de definir bien el denominador de una proporción para estimar una probabilidad: “No es lo mismo la probabilidad de que un católico sea Papa que la de que un Papa ...
  • Scheduling policies for multi-period services 

    Núñez del Toro, Alma Cristina; Fernández Aréizaga, Elena; Kalcsics, Jörg; Nickel, Stefan (Elsevier, 2015-02-12)
    Article
    Accés restringit per política de l'editorial
    This paper discusses a multi-period service scheduling problem. In this problem, a set of customers is given who periodically require service over a finite time horizon. To satisfy the service demands, a set of operators ...
  • Hybrid AC-DC offshore wind power plant topology: optimal design 

    Prada Gil, Mikel de; Igualada González, Lucía; Corchero García, Cristina; Gomis Bellmunt, Oriol; Sumper, Andreas (2015-07-01)
    Article
    Accés obert
    The aim of this paper is to present a hybrid AC-DC offshore wind power plant (OWPP) topology and to optimize its design in order to minimize the OWPP's total cost. This hybrid concept is based on clustering wind turbines ...
  • A novel model for arc territory design: promoting Eulerian districts 

    Garcia Ayala, Gariela; González Velarde, José Luis; Rios Mercados, Roger; Fernández Aréizaga, Elena (2015-01-01)
    Article
    Accés obert
    The problem of district design for the implementation of arc routing activities is addressed. The aim is to partition a road network into a given number of sectors to facilitate the organization of the operations to be ...

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