Exploració per autor "Juan Pérez, Angel Alejandro"
Ara es mostren els items 10-28 de 28
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Combinando randomización sesgada y búsqueda local iterativa para resolver problemas de flow-shop
Lourenço, Helena R.; Mateo Doll, Manuel; Grasas, Alex; Agustín Martín, Alba; Juan Pérez, Angel Alejandro (2012)
Text en actes de congrés
Accés obertA la hora de poder aplicar algoritmos te oricos a casos reales, no solo resulta conveniente que el algoritmo sea e ciente sino tambi en que sea lo m as comprensible posible y que no requiera de comple- jos procesos de ... -
Combining biased randomization with meta-heuristics for solving the multi-depot vehicle routing problem
Juan Pérez, Angel Alejandro; Barrios, Barry; González Martín, Sergio; Coccola, Mariana; Faulín, Javier; Bektas, Tolga (2012)
Comunicació de congrés
Accés restringit per política de l'editorialThis paper proposes a hybrid algorithm, combining Biased-Randomized (BR) processes with an Iterated Local Search (ILS) meta-heuristic, to solve the Multi-Depot Vehicle Routing Problem (MDVRP). Our approach assumes a ... -
Combining constraint programming, lagrangean relaxation and probabilistic algorithms to solve the vehicle routing problem
Guimarans, D; Herrero, R; Riera, D; Juan Pérez, Angel Alejandro; Ramos, J (2011)
Article
Accés restringit per política de l'editorialThis paper presents an original hybrid approach to solve the Capacitated Vehicle Routing Problem (CVRP). The approach combines a Probabilistic Algorithm with Constraint Programming (CP) and Lagrangian Relaxation (LR). ... -
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)
Comunicació de congrés
Accés restringit per política de l'editorialIn 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 ... -
Enseñanza de las matemáticas asistida por las tecnologías del aprendizaje y la comunicación: el proyecto M@thelearning
Steegmann Pascual, Cristina; Juan Pérez, Angel Alejandro; Huertas Sánchez, María Antonia (2011)
Article
Accés obert... El auge de las TAC en general, y de Internet en particular, ha traído con ellos la aparición de numerosos espacios virtuales de aprendizaje de las matemáticas que, en muchos casos, refuerzan o complementan los métodos ... -
On the use of Monte Carlo simulation, cache and splitting techniques to improve the clarke and wright savings heuristics
Juan Pérez, Angel Alejandro; Faulín, Javier; Jorba, Josep; Riera, D; Masip Rodó, David; Barrios, Barry (2011)
Article
Accés restringit per política de l'editorialThis paper presents the SR-GCWS-CS probabilistic algorithm that combines Monte Carlo simulation with splitting techniques and the Clarke and Wright savings heuristic to find competitive quasi-optimal solutions to the ... -
Quadern de pràctiques amb MInitab
Ferrer Biosca, Alberto; Guillamon Grabolosa, Antoni; Juan Pérez, Angel Alejandro; Mitjana Riera, Margarida; Rodríguez Jordana, Juan; Serrat Piè, Carles; Torrent Torrent, Juan Antonio (Universitat Politècnica de Catalunya, 2005)
Apunts / Exercici de pràctiques
Accés obert -
Sensing users selection with overhead reduction for cognitive wireless ad-hoc networks
Adelantado, Ferran; Juan Pérez, Angel Alejandro; Skianis, Harry; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2010)
Text en actes de congrés
Accés obertCognitive Wireless Ad-Hoc Networks use cooperation in order to sense the spectrum accurately. However, the space diversity provided by the cooperative sensing is only efficient when the sensing users are selected appropriately. ... -
Simulation education in the internet age: some experiences on the use of pure online and blended learning models
Fonseca Casas, Pau; Juan Pérez, Angel Alejandro; Pla, Lluis M.; Rodríguez, Sara V.; Faulín, Javier (2009-12-13)
Text en actes de congrés
Accés obertIn this paper we analyze several cases related to three different Spanish universities that make use of the World Wide Web to teach simulation courses online. These universities are the Open University of Catalonia, the ... -
Solving the capacitated vehicle routing problem with environmental criteria based on real estimations in road transportation: a case study
Faulín Fajardo, Francisco Javier; Juan Pérez, Angel Alejandro; Lera López, Fernando; Grasman, Scott (Elsevier, 2011)
Text en actes de congrés
Accés obertOne of the most important objectives in company logistics is the optimization of goods distribution considering the whole value chain. There are many algorithms to optimise the capacitated vehicle routing problems (CVRP) ... -
Solving the VRP with probabilistic algorithms supported by constraint programming
Riera Terrén, Daniel; Juan Pérez, Angel Alejandro; Faulín Fajardo, Francisco Javier (2010)
Text en actes de congrés
Accés obertAmong the human-being problems, there are those which carry with the exploration of a number of feasible and unfeasible possible solutions. These have been a challenge faced constructing specific strategies. Thus, techniques ... -
SR-1: A simulation-based algorithm for the capacitated vehicle routing problem
Faulín Fajardo, Francisco Javier; Gilibert Sunyé, Miquel; Juan Pérez, Angel Alejandro; Vilajosana Guillen, Xavier; Ruiz García, Rubén (ISI Proceedings, 2008-12)
Capítol de llibre
Accés obertIn this paper we present SR-1, a simulation-based heuristic algorithm for the capacitated vehicle routing oroblem (CVRP). Given a CVRP instance, SR-1 uses an initial “good solution”, such as the one provided by the classical ... -
Structural reliability and availability analysis through simulation
Juan Pérez, Angel Alejandro; Simosa, Jorge; Faulín, Javier; Monteforte, Arai; Guo, Harry (2011)
Article
Accés obertIn this paper, some potential applications of simulation in structural reliability and availability are presented. Unlike the analytical methods, where assumptions that simplify complex analysis often need to be made, ... -
Teaching mathematics online in the european area of higher education: an instructors’ point of view
Juan Pérez, Angel Alejandro; Steegmann Pascual, Cristina; Huertas Sánchez, María Antonia; Martínez-Argüelles, María-Jesús; Simosa, J (Taylor & Francis Ltd., 2011)
Article
Accés restringit per política de l'editorialThis article first discusses how information technologies are changing the way knowledge is delivered at universities worldwide. Then, the article reviews some of the most popular learning management systems available today ... -
Using discrete-event simulation to design reliable and cost-efficient civil engineering structures
Juan Pérez, Angel Alejandro; Ferrer Biosca, Alberto; Serrat Piè, Carles; Faulín, Javier; Hester, J.; López Brosa, Pere (2009-09)
Text en actes de congrés
Accés obertIn this paper the topic of Structural Reliability Analysis and its importance in modern Civil Engineering is introduced. Throughout the paper, some advantages that simulation-based approaches offer with respect to other ... -
Using parallel & distributed computing for solving real-time vehicle routing problems with stochastic demands
Juan Pérez, Angel Alejandro; Faulín, Javier; Jorba, Josep; Caceres, J; Marquès Puig, Joan Manel (2011)
Article
Accés restringit per política de l'editorialThis paper focuses on the Vehicle Routing Problem with Stochastic Demands (VRPSD) and discusses how Parallel and Distributed Computing Systems can be employed to efficiently solve the VRPSD. Our approach deals with uncertainty ... -
Using simulation to provide alternative solutions to the flowshop sequencing problem
Juan Pérez, Angel Alejandro; Guix, Antoni; Adelantado Freixer, Ferran; Fonseca Casas, Pau; Ruiz García, Rubén (2010)
Text en actes de congrés
Accés obertIn this paper we present SS-GNEH, a simulation-based algorithm for the Permutation Flowshop Sequencing Problem (PFSP). Given a PFSP instance, the SSGNEH algorithm incorporates a randomness criterion to the classical NEH ... -
Using specification and description language to represent users’ profiles in OMNET++ simulations
Fonseca Casas, Pau; Roma Niñerola, Miquel; Juan Pérez, Angel Alejandro (2011)
Text en actes de congrés
Accés obertOmnet++ is a powerful and open-source simulation tool which is basically intended to model discrete-event systems. In particular, Omnet++ is extensively used to model and simulate computer networks. Typically, when a Wide ... -
ZERO: probabilistic routing for deploy and forget wireless sensor networks
Vilajosana Guillen, Xavier; Juan Pérez, Angel Alejandro; Llosa, J; Pacho, C; Vilajosana Guillen, Ignasi; López Vicario, José; Morell, A (2010)
Article
Accés obertAs Wireless Sensor Networks are being adopted by industry and agriculture for large-scale and unattended deployments, the need for reliable and energy-conservative protocols become critical. Physical and Link layer efforts ...