Now showing items 1-20 of 178

    • 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 Center
      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 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 data-driven learning method for constitutive modeling: application to vascular hyperelastic soft tissues 

      González Ibáñez, David; García González, Alberto; Chinesta Soria, Francisco; Cueto Prendes, Elias (Multidisciplinary Digital Publishing Institute (MDPI), 2020-05-01)
      Article
      Open Access
      We address the problem of machine learning of constitutive laws when large experimental deviations are present. This is particularly important in soft living tissue modeling, for instance, where large patient-dependent ...
    • 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 ...
    • 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 genetic algorithm for the mixed flow shop problem 

      Pascual Poch, Mario (Universitat Politècnica de Catalunya, 2019-10-16)
      Master thesis
      Open Access
      Covenantee:   Università degli studi di Trento
      In this thesis we present a new interesting version of the mixed flow shop se-quencing problem, which at the same time is a version of the classic flow shop,a very common topic on operations research.We propose a genetic ...
    • 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 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 ...
    • 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 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 model that assesses proposals for infrastructure improvement and capacity expansion on a mixed railway network 

      Rosell Camps, Francisca; Codina Sancho, Esteve (Elsevier, 2020)
      Article
      Open Access
      This paper presents a mathematical programming-based model for evaluating the impact on a mixed railway network from proposals for infrastructure improvement and capacity expansion that are oriented mainly toward increasing ...
    • 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 ...
    • A new mathematical profile for experimental Raman spectra of historical mineral pigments 

      Penalba Albuixech, Andrea (Universitat Politècnica de Catalunya, 2020-07)
      Bachelor thesis
      Open Access
      This final degree project (GFR) is based on the use of Raman spectroscopy as a method of characterizing pigments of mineral origin and especially those used in art. One of the fundamental objectives has been to find precise ...
    • A simplified model for scheduling services on auxiliary bus lines 

      Codina Sancho, Esteve; Montero Mercadé, Lídia (2014)
      Conference report
      Restricted access - publisher's policy
      In this paper, a mathematical programming based model is described to assist with the schedule of services for a set of auxiliary bus lines that operate alleviating a disruption of the regular transportation system during ...
    • A simulation study regarding different aircraft boarding strategies 

      Mas, Silvia; Juan, Angel A.; Arias, Pol; Fonseca Casas, Pau (2013)
      Conference report
      Open Access
      The airline industry is constantly subject to the search of new methods in order to increase efficiency, profitability, and customer satisfaction. Since airlines only generate revenue when their airplanes are on the air, ...
    • A stochastic programming model for the optimal electricity market bid problem with bilateral contracts for thermal and combined cycle units 

      Heredia, F.-Javier (Francisco Javier); Rider Flores, Marcos Julio; Corchero García, Cristina (2008-10)
      Article
      Open Access
      This paper developed a stochastic programming model that integrated the most recent regula- tion rules of the Spanish peninsular system for bilateral contracts in the day-ahead optimal bid problem. Our model allows a ...
    • A stochastic programming model for the tertiary control of microgrids 

      Citores Martinez, Leire (Universitat Politècnica de Catalunya, 2014-06)
      Master thesis
      Restricted access - author's decision
      In this thesis a scenario-based two-stage stochastic programming model is proposed to solve a microgrid's tertiary control optimization problem taking into account some renewable energy resource s uncertainty as well ...