Now showing items 21-40 of 181

  • An expert system to minimize operational costs in mixed-model sequencing problems with activity factor 

    Bautista Valhondo, Joaquín; Alfaro Pozo, Rocío (2018-08-15)
    Article
    Restricted access - publisher's policy
    One of the major issues in industrial environments is currently maximizing productivity while reducing manufacturing cost. This can be seen clearly reflected in mixed-model assembly lines based systems, where obtaining ...
  • A novel algorithm for isolated electrification projects 

    Ranaboldo, Matteo; García Villoria, Alberto; Ferrer Martí, Laia; Pastor Moreno, Rafael (2015-05-04)
    External research report
    Open Access
    In this report it is proposed a metaheuristic procedure to support the design of stand - alone commun ity electrification projects. In particular, the solution returned by the procedure ...
  • Ant colony optimization for broadcasting in sensor networks under a realistic antenna model 

    Hernández Pibernat, Hugo; Blum, Christian (2010)
    Conference report
    Restricted access - publisher's policy
    Most, if not all, works from the literature dealing with minimum energy broadcasting in wireless ad-hoc networks such as sensor networks consider antenna models that allow the adjustment of the emission power to any desired ...
  • Ant colony optimization theory : a survey 

    Dorigo, Marco; Blum, Christian (2005-11)
    Article
    Restricted access - publisher's policy
    Research on a new metaheuristic for optimization is often initially focused on proof-of-concept applications. It is only after experimental work has shown the practical interest of the method that researchers try to deepen ...
  • Aplicació de tècniques de Routing en línies d’autobusos d’aportació 

    Roca i Blanco, Oriol (Universitat Politècnica de Catalunya, 2015-01)
    Master thesis
    Open Access
    Sovint, les línies d’altes prestacions de transport públic col·lectiu, com ara els corredors que uneixen el centre de la ciutat amb els barris i nuclis perifèrics, presenten un trade-off entre l’oferta diferencial ...
  • Aplicación de los algoritmos de hormigas para la resolución de un problema de equilibrado de líneas de montaje con robotizados 

    Aparicio Guirao, Daniel (Universitat Politècnica de Catalunya, 2012-09)
    Master thesis (pre-Bologna period)
    Open Access
    El problema de equilibrado de líneas de montaje es un problema clásico de diseño de sistemas productivos que consiste en la asignación de las tareas necesarias para el montaje del producto a las estaciones de trabajo de ...
  • A proposed mathematical model for the personnel scheduling problem in a manufacturing company 

    Tomàs Olivé, Josep (Universitat Politècnica de Catalunya / Istanbul Teknik Üniversitesi, 2009)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    In the current economic and industrial conditions, with demand ever fluctuating and optimization more important in every field, designing a timetable to define a personnel schedule is not an easy task. Personnel scheduling ...
  • A randomized iterated greedy algorithm for the founder sequence reconstruction problem 

    Benedettini, Stefano; Blum, Christian; Roli, Andrea (2010-04)
    Article
    Restricted access - publisher's policy
    The problem of inferring ancestral genetic information in terms of a set of founders of a given population arises in various biological contexts. In optimization terms, this problem can be formulated as a combinatorial ...
  • Artificial bee colony based algorithm for maximum power pointtracking (MPPT) for PV systems operating under partial shaded conditions 

    Benyoucef, Abou soufyane; Chouder, Aissa; Kara, Kamel; Silvestre Bergés, Santiago; Shaed, Oussama Ait (2015-07-01)
    Article
    Open Access
    Artificial bee colony (ABC) algorithm has several characteristics that make it more attractive than other bio-inspired methods. Particularly, it is simple, it uses fewer control parameters and its convergence is independent ...
  • Asignación de rutas de viajantes de comercio 

    Vega Ocaña, Oscar (Universitat Politècnica de Catalunya, 2008-09)
    Master thesis (pre-Bologna period)
    Open Access
    En este proyecto se aborda un problema de un comercial que debe visitar a diferentes clientes un número determinado de veces, en un intervalo de tiempo preestablecido, por ejemplo, un mes. Se trata de determinar los ...
  • 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 static benchmarking for grid scheduling problems 

    Xhafa Xhafa, Fatos; Barolli, Leonard; Gonzalez S, Juan Antonio; Jura, Pawel (Institute of Electrical and Electronics Engineers (IEEE), 2009)
    Conference report
    Open Access
    Analysis of algorithms for Grid computing systems before deployment in real Grid infrastructures is an important issue in Grid computing domain. Due to the complexity of real Grid systems, assessing performance analysis ...
  • A summary of transit models developed in research project TRA2008-06782-C02-02 

    Codina Sancho, Esteve; Montero Mercadé, Lídia; Marín, A; López, F.; Verastegui, D.; López, Mª Luz (2012)
    External research report
    Open Access
    Report de recerca DR 2012/1 E. Codina, L. Montero, A. Marín, F. López, D. Verastegui, Ma. Luz López
  • A Tabu Search algorithm for ground station scheduling problem 

    Xhafa Xhafa, Fatos; Herrero Garcia, Xavier; Barolli, Admir; Takizawa, Makoto (2014)
    Conference report
    Open Access
    Mission planning plays an important role in satellite control systems. Satellites are not autonomously operated in many cases but are controlled by tele-commands transmitted from ground stations. Therefore, mission scheduling ...
  • A web interface for satellite scheduling problems 

    Xhafa Xhafa, Fatos; Garcia, Carlos; Barolli, Admir; Takizawa, Makoto (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Open Access
    Mission planning plays an important role in satellite control systems, especially with increase of number of satellites and more complex missions to be planned. In a general setting, the satellite mission scheduling consists ...
  • A web interface for wireless mesh networks based on heuristic algorithms: optimisation and analysis for different scenarios 

    Lala, Algenti; Kolici, Vladi; Oda, Tetsuya; Barolli, Leonard; Barolli, Admir; Xhafa Xhafa, Fatos (2015-07)
    Article
    Restricted access - publisher's policy
    In this work, we present WMN-HC and WMN-SA systems which are based on Hill Climbing (HC) and Simulated Annealing (SA) for location assignment of mesh routers in Wireless Mesh Networks (WMNs). As evaluation metrics, we used ...
  • Beam-ACO for the longest common subsequence problem 

    Blum, Christian (IEEE Computer Society Publications, 2010)
    Conference report
    Open Access
    The longest common subsequence problem is classical string problem. It has applications, for example, in pattern recognition and bioinformatics. In this work we present a socalled Beam-ACO approach for solving this problem. ...
  • Benchmarking over satellite scheduling problem 

    Calvo Juan, Carlos (Universitat Politècnica de Catalunya, 2012-07-23)
    Master thesis (pre-Bologna period)
    Open Access
    Covenantee:  Massachusetts Institute of Technology
    [ANGLÈS] The Earth Science Decadal Survey, organized by NASA, NPOESS and other American institutions, has proportioned an initial recommendation for the decade 2011-2020 consistent in a missions campaign taking care of the ...
  • Check-in counter allocation at Copenhagen Airport 

    Giménez Martínez, Ana (Universitat Politècnica de Catalunya / Denmarks Tekniske Universitet (Technical University of Denmark), 2011)
    Master thesis (pre-Bologna period)
    Open Access
    The purpose of this thesis is to develop a mathematical optimization model to assist the authorities of the airport of Copenhagen in allocating the different companies in the check-in counters. This model should assign ...
  • Combining Monte-Carlo simulation with heuristics for solving the inventory routing problem with stochastic demands 

    Cáceres Cruz, José; Juan Pérez, Angel Alejandro; Bektas, Tolga; Grasman, Scott; Faulín, Javier (2012)
    Conference lecture
    Restricted access - publisher's policy
    In this paper, we introduce a simulation-based algorithm for solving the single-period Inventory Routing Problem (IRP) with stochastic demands. Our approach, which combines simulation with heuristics, considers different ...