Now showing items 1-20 of 238

  • A branch-and-cut algorithm for the multidepot rural postman problem 

    Fernández Aréizaga, Elena; Laporte, Gilbert; Rodríguez Pereira, Jessica (2018-03)
    Article
    Open Access
    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 ...
  • A checkpoint/restart directive-based approach 

    Maroñas Bravo, Marcos (Universitat Politècnica de Catalunya, 2017)
    Master thesis
    Open Access
    Covenantee:  Barcelona Supercomputing Centre
    Exascale platforms require programming models incorporating support for resilience capabilities since the huge number of components they are expected to have is going to increase the number of errors. Checkpoint/restart ...
  • A combination of the Knapsack algorithm and MIVES for choosing optimal temporary housing site locations: a case study in Tehran 

    Pons Valladares, Oriol; Fuente Antequera, Albert de la; Hosseini, Seyed Mohammad Amin (Elsevier, 2017-10-13)
    Article
    Open Access
    In the aftermath of natural disasters, decision-makers often clash when tackling the challenge of choosing suitable temporary housing unit (THU) site locations. Site location considerably impacts temporary housing (TH) ...
  • A consensus model for Delphi processes with linguistic terms and its application to chronic pain in neonates definition 

    Agell Jané, Núria; van Ganzewinkel,, Christ Jan; Sánchez Soler, Monica; Roselló Saurí, Llorenç; Prats Duaygues, Francesc; Andriessen, Peter (2015-10)
    Article
    Open Access
    This paper proposes a new model of consensus based on linguistic terms to be implemented in Delphi processes. The model of consensus involves qualitative reasoning techniques and is based on the concept of entropy. The ...
  • A cryptographic solution for private distributed simple meeting scheduling 

    Herranz Sotoca, Javier; Matwin, Stan; Meseguer González, Pedro; Nin Guerrero, Jordi (IOS Press, 2009)
    Conference report
    Open Access
    Meeting scheduling is a suitable application for distributed computation motivated by its privacy requirements. Previous work on this problem have considered some cryptographic and conceptually clear approach to solve a ...
  • A decision support system and a mathematical model for strategic workforce planning in consultancies 

    Llort Gual, Núria; Lusa García, Amaia; Martínez Costa, Carme; Mateo Doll, Manuel (2018-01-01)
    Article
    Open Access
    Strategic staff planning in consultancies is a major problem that directly affects the firm’s performance and capacity for dealing with projects appropriately. Furthermore, the decisions taken now will have long term ...
  • Affectation de véhicules aux routes dans un système de transport multi-école 

    Cobes Moreno, Ana María; Corominas Subias, Albert (Universitat Politècnica de Catalunya. Centre de Càlcul, 1990)
    Article
    Open Access
    Este artículo describe una parte del sistema TRESCA para la organización del transporte escolar en Andorra. Una vez determinadas las rutas a ofrecer, conviene asignarles los vehículos para minimizar los costes. El algoritmo ...
  • A finite point method for three-dimensional compressible flow 

    Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo (2007-09)
    External research report
    Open Access
  • A fix-and-relax heuristic for controlled tabular adjustment 

    Baena, Daniel; Castro Pérez, Jordi (2013-07)
    External research report
    Open Access
    Controlled tabular adjustment (CTA) is an emerging protect ion technique for tabular data pro- tection. CTA formulates a mixed integer linear programming problem, which is tough for tables of moderate size. Finding a ...
  • A heuristic method for a congested capacitated transit assignment model with strategies 

    Codina Sancho, Esteve; Rosell Camps, Francisca (2017-12)
    Article
    Open Access
    This paper addresses the problem of solving the congested transit assignment problem with strict capacities. The model under consideration is the extension made by Cominetti and Correa (2001), for which the only solution ...
  • A hybrid flow shop model for an ice cream production scheduling problem 

    Ribas Vila, Immaculada; Companys Pascual, Ramón (School of Industrial and Aeronautic Engineering of Terrassa (ETSEIAT). Universitat Politècnica de Catalunya (UPC), 2009-06)
    Article
    Open Access
    In this paper we address the scheduling problem that comes from an ice cream manufacturing company. This production system can be modelled as a three stage nowait hybrid flow shop with batch dependent setup costs. To ...
  • A Kalman-filter approach for dynamic OD estimation in corridors based on bluetooth and wifi data collection 

    Barceló Bugeda, Jaime; Montero Mercadé, Lídia; Marquès, Laura; Carmona Bautista, Carlos (2010-07)
    Conference report
    Open Access
    From the point of view of the information supplied by an ATIS to the motorists entering a freeway of one of the most relevant is the Forecasted Travel Time, that is the expected travel time that they will experience when ...
  • Algoritmo del elipsoide interior para programación lineal 

    Salamanca Fernández, Ángel; Juan Ruiz, Jesús (Universitat Politècnica de Catalunya. Centre de Càlcul, 1991)
    Article
    Open Access
    En este artículo se desarrolla un algoritmo de puntos interiores para programación lineal a partir de consideraciones geométricas. En cada iteración del método se dispone de un punto interior al politopo. Con centro en ...
  • Algoritmo para la elección de fracciones factoriales con óptima proyección 

    Tort-Martorell Llabrés, Xavier; Prat Bartés, Albert (Universitat Politècnica de Barcelona. Centre de Càlcul, 1986-06)
    Article
    Open Access
    En cualquier proceso industrial hay dos fases, diseño del producto y producción donde experimentos cuidadosamente diseñados pueden contribuir enormemente a aumentar la calidad del producto final. En ambos casos el interés ...
  • A measure of perceived performance to assess resource allocation 

    Sayeras, Josep M.; Agell, Nuria; Rovira Llobera, Xari; Sánchez Soler, Monica; Dawson, John A. (Springer, 2016-08-01)
    Article
    Open Access
    Performance measurement is a key issue when a company is designing new strategies to improve resource allocation. This paper offers a new methodology inspired by classic importance-performance analysis (IPA) that provides ...
  • A method of multiobjective decision making using a vector value function 

    Ríos Insúa, Sixto; González Pachón, Jacinto; Mateos, Alfonso (Institut d'Estadística de Catalunya, 1994)
    Article
    Open Access
    A decision situation with partial information on preferences by means of a vector value function is assumed. The concept of minimum value dispersion solution as a reference point joined with a pseudodistance function from ...
  • A methodology for constructing fuzzy rule based classification systems 

    Fernández Garrido, José María; Requena Ramos, Ignacio (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2000)
    Article
    Open Access
    In this paper, a methodology to obtain a set of fuzzy rules for classification systems is presented. The system is represented in a layered fuzzy network, in which the links from input to hidden nodes represents the ...
  • A MIP formulation of a Hybrid AC-DC offshore wind power plant topology 

    Homs Moreno, Josep (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2017-10)
    Master thesis
    Restricted access - confidentiality agreement
    Covenantee:  Department of Statistics and Operations Research - Research Group GNOM
  • A multi-objective approach to infrastructure planning in the early stages of EV introduction 

    Brown, Andina Rosalya (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2014-01)
    Master thesis
    Restricted access - author's decision
    This study addresses the problem of locating fast charging stations for electric vehicles in the early stages of infrastructure implementation. The primary objectives are to contextualise the problem and to subsequently ...
  • An algebraic model for the storage of data in parallel memories 

    Fiol Mora, Miquel Àngel; Serra Albó, Oriol (Springer, 1989)
    Part of book or chapter of book
    Open Access
    The use of SIMD computers requires efficient schemes of storage of data in order to have conflict-free acces in parallel computation. In this paper we restate the problem of finding such chemes in an algebraic context. ...