Now showing items 21-40 of 55

  • INVESTIGACIÓ OPERATIVA (Examen 2n quadrim) 

    Fernández Aréizaga, Elena (Universitat Politècnica de Catalunya, 2007-05-30)
    Exam
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  • INVESTIGACIÓ OPERATIVA (Examen 2n quadrim) 

    Fernández Aréizaga, Elena (Universitat Politècnica de Catalunya, 2007-07-06)
    Exam
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  • Lagrangean bounds for the optimum communication spanning tree problem 

    Contreras, I.; Fernández Aréizaga, Elena; Marín, Alfredo (Springer Verlag, 2010)
    Article
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    This paper considers the Optimum Communication Spanning Tree Problem. An integer programming formulation that yields tight LP bounds is proposed. Given that the computational effort required to obtain the LP bounds ...
  • Lagrangean Duals and Exact Solution to the Capacitated p-Center Problem 

    Albareda Sambola, Maria; Díaz, Juan A.; Fernández Aréizaga, Elena (2006-06-12)
    Article
    Open Access
    In this work we study the Capacitated p-Center Problem (CpCP) and we propose an exact algorithm to solve it. We study two auxiliary problems and their relation to CpCP, and we propose two different Lagrangean duals based ...
  • Location routing problems on trees 

    Aráoz Durand, Julián Arturo; Fernández Aréizaga, Elena; Rueda, Salvador (2019-04-30)
    Article
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    This paper addresses combined location/routing problems defined on trees, where not all vertices have to be necessarily visited. A mathematical programming formulation is presented, which has the integrality property. The ...
  • Minimizing the maximum travel time in a combined model of facility location and network design 

    Contreras Aguilar, Iván; Fernández Aréizaga, Elena; Reineltc, Gerhard (2012-12)
    Article
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    This paper presents a combined Facility Location/Network Design Problem which simultaneously considers the location of facilities and the design of its underlying network so as to minimize the maximum customer-facility ...
  • Minimum Spanning Trees with neighborhoods: mathematical programming formulations and solution methods 

    Blanco, Víctor; Fernández Aréizaga, Elena; Puerto Albandoz, Justo (Elsevier, 2017-11-01)
    Article
    Open Access
    This paper studies Minimum Spanning Trees under incomplete information assuming that it is only known that vertices belong to some neighborhoods that are second order cone representable and distances are measured with a ...
  • Multi-depot rural postman problems 

    Fernández Aréizaga, Elena; Rodríguez Pereira, Jessica (Springer, 2017-07-01)
    Article
    Open Access
    This paper studies multi-depot rural postman problems on an undirected graph. These problems extend the well-known undirected rural postman problem to the case where there are several depots instead of just one. Linear ...
  • Multiperiod location-routing with decoupled time scales 

    Albareda Sambola, Maria; Fernández Aréizaga, Elena; Nickel, Stefan (Elsevier, 2012-03-01)
    Article
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    This paper focuses on a multiperiod discrete facility location problem where transportation costs are considered together with location costs to design the operating facility pattern along a time horizon. The problem ...
  • On the collaboration uncapacitated arc routing problem 

    Fernández Aréizaga, Elena; Fontana, Dario; Speranza, M. Grazia (2016-03-01)
    Article
    Open Access
    This paper introduces a new arc routing problem for the optimization of a collaboration scheme among carriers. This yields to the study of a profitable uncapacitated arc routing problem with multiple depots, where carriers ...
  • On the generalitzed arc routing problem 

    Fernández Aréizaga, Elena (2013)
    Conference report
    Open Access
  • OPTIMITZACIÓ ENTERA I COMBINATÒRIA 

    Fernández Aréizaga, Elena (Universitat Politècnica de Catalunya, 2014-01-10)
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  • Ordered Weighted Average optimization in Multiobjective Spanning Tree Problem 

    Fernández Aréizaga, Elena; Pozo, Miguel Angel; Puerto Albandoz, Justo; Scozzari, Andre (Elsevier, 2017-08-01)
    Article
    Open Access
    Rework adversely impacts the performance of building projects. In this study, data were analyzed from 788 construction incidents in 40 Spanish building projects to determine the effects of project and managerial characteristics ...
  • Parking slot assignment for urban distribution: models and formulations 

    Roca Riu, Mireia; Fernández Aréizaga, Elena; Estrada Romeu, Miguel Ángel (2015-05-07)
    Article
    Open Access
    A key element to enhance urban distribution is the adequate management of parking space, particularly for loading and unloading operations. An in-advance booking system able to be adjusted to users needs can be a very ...
  • Problemas de Knapsack 0-1 con una restricción adicional 

    Barceló Bugeda, Jaime; Fernández Aréizaga, Elena (Universitat Politècnica de Barcelona. Centre de Càlcul, 1988)
    Article
    Open Access
    En este artículo se estudian los problemas de Knapsack con una restricción adicional. Este estudio viene motivado por la aparición de problemas con esta estructura en la formulación de distintas relajaciones lagrangianas ...
  • PROGRAMACIÓ MATEMÀTICA 

    Fernández Aréizaga, Elena (Universitat Politècnica de Catalunya, 2012-01-09)
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  • PROGRAMACIÓ MATEMÀTICA (Examen 1r quadrim) 

    Fernández Aréizaga, Elena (Universitat Politècnica de Catalunya, 2003-11-10)
    Exam
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  • PROGRAMACIÓ MATEMÀTICA (Examen 1r quadrim) 

    Fernández Aréizaga, Elena (Universitat Politècnica de Catalunya, 2004-01-12)
    Exam
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  • PROGRAMACIÓ MATEMÀTICA (Examen 1r quadrim) 

    Fernández Aréizaga, Elena (Universitat Politècnica de Catalunya, 2004-01-12)
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  • PROGRAMACIÓ MATEMÀTICA (Examen 2n quadrim) 

    Fernández Aréizaga, Elena (Universitat Politècnica de Catalunya, 2008-05-22)
    Exam
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