Exploració per autor "Juan Pérez, Angel Alejandro"
Ara es mostren els items 1-20 de 28
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A hybrid algorithm combining heuristics with Monte Carlo simulation for solving the Stochastic Flow Shop Problem
Juan Pérez, Angel Alejandro; Peruyero, Esteban; Riera Terrén, Daniel (2011)
Text en actes de congrés
Accés obertIn this paper a hybrid simulation-based algorithm is proposed for the Stochastic Flow Shop Problem. The main idea of the methodology is to transform the stochastic problem into a deterministic problem and then apply ... -
A hybrid algorithm combining path scanning and biased random sampling for the Arc Routing Problem
González Martín, Sergio; Juan Pérez, Angel Alejandro; Riera Terrén, Daniel; Caceres Cruz, Jose de Jesus (2011)
Text en actes de congrés
Accés obertThe Arc Routing Problem is a kind of NP-hard routing problems where the demand is located in some of the arcs connecting nodes and should be completely served fulfilling certain constraints. This paper presents a hybrid ... -
A Parameter-free approach for solving combinatorial optimization problems through biased randomization of efficient heuristics
Ionescu, Dragos; Juan Pérez, Angel Alejandro; Faulín, Javier; Ferrer Biosca, Alberto (2011-01)
Article
Accés obertThis paper discusses the use of probabilistic or randomized algorithms for solving combinatorial optimization problems. Our approach employs non-uniform probability distributions to add a biased random behavior to classical ... -
A simulation study regarding different aircraft boarding strategies
Mas, Sílvia; Juan Pérez, Angel Alejandro; Arias, Pol; Fonseca Casas, Pau (Springer, 2013-06-07)
Capítol de llibre
Accés obertThe 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 simulation-based algorithm for solving the Vehicle Routing Problem with Stochastic Demands
Juan Pérez, Angel Alejandro; Faulín, Javier; Caceres Cruz, Jose de Jesus; Riera Terrén, Daniel; Grasman, Scott (2011)
Text en actes de congrés
Accés obertThis paper proposes a flexible solution methodology for solving the Vehicle Routing Problem with Stochastic Demands (VRPSD). The logic behind this methodology is to transform the issue of solving a given VRPSD instance ... -
A simulation-based approach for solving the flowshop problem
Juan Pérez, Angel Alejandro; Ruíz, Rubén; Lourenço, Helena R.; Mateo Doll, Manuel; Ionescu, Dragos (2010)
Comunicació de congrés
Accés obertA simulation-based algorithm for the Permutation Flowshop Sequencing Problem (PFSP) is presented. The algorithm uses Monte Carlo Simulation and a discrete version of the triangular distribution to incorporate a randomness ... -
Aplicación de un algoritmo randomizado a un problema real de enrutamiento de vehículos heterogéneos
Caceres Cruz, Jose de Jesus; Grasas León, Alex; Lourenço, Helena R.; Juan Pérez, Angel Alejandro; Roca Puigvert, Mercè; Colomé Perales, Rosa (2012)
Text en actes de congrés
Accés obertLa problemática del enrutamiento de vehículos cobra cada vez más importancia en el plano empresarial y estatal. Esta área de estudio ha experimentado grandes avances teóricos, pero se ha mantenido a cierta distancia de ... -
Applications of discrete-event simulation to reliability and availability assesment in civil engineering structures
Juan Pérez, Angel Alejandro; Monteforte, A.; Ferrer Biosca, Alberto; Serrat Piè, Carles; Faulín, Javier (2009)
Text en actes de congrés
Accés obertThis paper discusses the convenience of predicting, quantitatively, time-dependent reliability and availability levels asso-ciated with most building or civil engineering structures. Then, the paper reviews different ... -
Aprendizaje virtual de las matemáticas
Juan Pérez, Angel Alejandro; Huertas Sánchez, María Antonia; Cuypers, H; Loch, B (UOC, 2012)
Article
Accés obertLes tecnologies educatives van canviant la manera d’impartir l’ensenyament superior. Aquestes tecnologies inclouen, entre altres, els entorns d’aprenentatge virtual o sistemes de gestió d’aprenentatge individual i ... -
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 ...