Now showing items 1-20 of 39

    • A mixed-integer linear program for real-time train platforming management 

      Garcia Ródenas, Ricardo; López García, Maria Luz; Cadarso Morga, Luis; Codina Sancho, Esteve (Elsevier, 2022-03-11)
      Article
      Open Access
      Unexpected events may perturb operations and generate conflicts that must be addressed promptly to limit delay propagation and other negative impacts on the network. The real-time railway traffic management problem deals ...
    • A new optimal electricity market bid model solved through perspective cuts 

      Corchero García, Cristina; Mijangos Fernández, Eugenio; Heredia, F.-Javier (Francisco Javier) (Springer, 2011-11)
      Article
      Restricted access - publisher's policy
      On current electricity markets the electrical utilities are faced with very sophisticated decision making problems under uncertainty. Moreover, when focusing in the short-term management, generation companies must include ...
    • A submodular approach to the efficient placement of electric vehicle charging stations 

      Barceló Castelló, Mariola (Universitat Politècnica de Catalunya, 2021-10)
      Master thesis
      Restricted access - author's decision
      Covenantee:   Immense
      Our contribution is an algorithm for the cardinality constrained placement of EV charge stations that achieves a $1-\frac{1}{e}-\epsilon$ (63\%) approximation guarantee with a computational complexity of $\mathcal{O}(n ...
    • A unified approach for measuring precision and generalization based on anti-alignments 

      Dongen, Boudewijn van; Carmona Vargas, Josep; Chatain, Thomas (Springer, 2016)
      Conference report
      Open Access
      The holy grail in process mining is an algorithm that, given an event log, produces fitting, precise, properly generalizing and simple process models. While there is consensus on the existence of solid metrics for fitness ...
    • Algoritmos para la asignación de pasajeros en redes de transporte público 

      Rosell Camps, Francisca (Universitat Politècnica de Catalunya, 2014-06)
      Master thesis
      Restricted access - author's decision
      Los modelos para la asignación de pasajeros son una magnífica herramienta para facilitar la planificación de las redes de transporte público y ayudan en la predicción de la utilización de las diferentes líneas por parte ...
    • An heuristic algorithm for dynamic network loading 

      Codina Sancho, Esteve; Barceló Bugeda, Jaime (International Federation of Automatic Control (IFAC), 1997-06-01)
      Article
      Open Access
      This paper describes an heuristic procedure for the problem of determining the time evolution of traffic flows and routes on a road net work with the key requirement that its computational costs must be appealing so as to ...
    • Analyzing SPSA approaches to solve the non-linear non-differentiable problems arising in the assisted calibration of traffic simulation models 

      Ros Roca, Xavier (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2017-01)
      Master thesis
      Open Access
      Mathematical and simulation models of systems lay at the core of decision support systems, and their role become more critical as more complex is the system object of decision. The decision process usually encompasses the ...
    • Building optisim, optimizador NZEB 

      Fonseca Casas, Pau; Colls, Màxim; Casanovas Garcia, Josep; Fonseca Casas, Antoni; Garrido Soriano, Núria (2012)
      Conference report
      Open Access
      La simulación de la demanda energética de un edificio es una tarea compleja debido principalmente a dos factores clave. En primer lugar, es necesario definir la física y las complejas relaciones entre todos los elementos ...
    • Caracterització de formulacions fortes del problema Unit Commitment 

      Escandell Planells, Jordan (Universitat Politècnica de Catalunya, 2017-07)
      Bachelor thesis
      Open Access
      El problema del unit commitment (UC) és un dels problemes combinatoris de major rellevància en l'aplicació de l'optimització matemàtica als sistemes d'energia i mercats elèctrics, essent fonamental per a la resolució ...
    • Connect the dot: computing feed-links for network extension 

      Speckmann, Bettina; Silveira, Rodrigo Ignacio; Aronov, Boris; Buchin, Kevin; Buchin, Maike; Jansen, Bart; De Jong, Tom; Kreveld, Marc van; Loffler, Maarten; Luo, Jun (2011-12-20)
      Article
      Open Access
      Road network analysis can require distance from points that are not on the network themselves. We study the algorithmic problem of connecting a point inside a face (region) of the road network to its boundary while ...
    • Development of heuristic methods for solving detection layout models 

      Valdivia García, Ana (Universitat Politècnica de Catalunya, 2014-07)
      Bachelor thesis
      Restricted access - author's decision
      The Information and Communications Technologies penetration in the transport sector has led to the emergence of new mechanisms for attracting trac data. The importance of nding the best location for these mechanisms into ...
    • Digital twin for simulating the fulfillment and transport network of a company 

      Bassa Lladó, Quim (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2022-01)
      Master thesis
      Restricted access - confidentiality agreement
      Covenantee:   Accenture
    • Dynamic user equilibrium on traffic networks. An analysis and a discretized model 

      Codina Sancho, Esteve; Barceló Bugeda, Jaime (International Federation of Automatic Control (IFAC), 1997-06-01)
      Article
      Open Access
      This paper formulates a discretized version of the Dynamic User Equilibrium problem on traffic networks as a variational inequality problem with special emphasys on the traffic dynamics. A finite difference approximation ...
    • Edge-partitioning regular graphs for ring traffic grooming with a priori placement od the ADMs 

      Muñoz López, Francisco Javier; Zhentao, Li; Sau Valls, Ignasi (2011)
      Article
      Open Access
      We study the following graph partitioning problem: Given two positive integers C and Δ, find the least integer M(C,Δ) such that the edges of any graph with maximum degree at most Δ can be partitioned into subgraphs with ...
    • Estudi de la cohort de pacients d'Insuficiència Cardíaca tractats amb Teràpia de Resincronització a l'Hospital Clínic de Barcelona 

      Borràs Amoraga, Roger (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2018-01)
      Master thesis
      Restricted access - author's decision
      En aquest projecte, estudiarem una cohort de pacients amb Teràpia de Resincronització Cardíaca (TRC). Els pacients de resincronització cardíca són una tipologia de pacients que pateixen mala sincronització en el funcionament ...
    • Flow computations on imprecise terrains 

      Driemel, Anne; Haverkort, Herman; Löffler, Maarten; Silveira, Rodrigo Ignacio (Springer Verlag, 2011)
      Conference report
      Restricted access - confidentiality agreement
      We study water flow computation on imprecise terrains. We consider two approaches to modeling flow on a terrain: one where water flows across the surface of a polyhedral terrain in the direction of steepest descent, and ...
    • ICT based estimation of time-dependent origin-destination matrices 

      Barceló Bugeda, Jaime; Montero Mercadé, Lídia; Marqués, Laura; Carmona Bautista, Carlos (2011)
      Conference report
      Open Access
      Time-Dependent Origin-Destination (OD) matrices are a key input to Dynamic Traffic Models, microscopic and mesoscopic traffic simulators are relevant examples of such models, traditionally used to assist in the design and ...
    • Implementation of a Simulation Model for Inventory Level in Multi-Echelon Supply Chains 

      Oliveres Luna, Patrícia (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2019-06)
      Master thesis
      Restricted access - author's decision
      Covenantee:   Accenture
      The objective of this paper was to implement an inventory level simulation model in order to reproduce the flow of inventory in any supply chain. The model we have created accepts any configuration of supply chain and is ...
    • Interdiction optimization approach to forest fuel treatment planning 

      Jiménez Piqueras, Celia (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2019-10)
      Master thesis
      Restricted access - author's decision
      Covenantee:   Centre Tecnològic Forestal de Catalunya
      In this master s thesis, it is presented the problem of mitigating the damage caused in a landscape by a wildfire. Specifically, in the problem, wildfire managers aim to minimize the impact of a worst-case wildfire on the ...
    • Learning agent in heuristic architecture optimization 

      Abelló Gàllego, Clara (Universitat Politècnica de Catalunya, 2015-02)
      Bachelor thesis
      Restricted access - author's decision
      Covenantee:   Cornell University. Sibley School of Mechanical and Aerospace Engineering
      One of the main problems of current system design and architecture tools is the communication between the tool and the user and vice-versa. This work describes an on-going effort to improve that communication by incorporating ...