Browsing by Subject "Simulació, Mètodes de"

Now showing items 1-20 of 262

    • A Bicriteria Simulated Annealing Algorithm for Scheduling Jobs on Parallel Machines with Sequence Dependent Setup Times 

      Persson, Rasmus (Universitat Politècnica de Catalunya, 2008-09)
      Master thesis (pre-Bologna period)
      Open Access
      The study considers the scheduling problem of identical parallel machines subject to minimization of the maximum completion time and the maximum tardiness expressed in a linear convex objective function. The maximum ...

    • A continuous-discontinous model for softening and cracking based on non-local displacements 

      Tamayo Mas, Elena; Rodríguez Ferran, Antonio (2008)
      Conference report
      Open Access
      A continuous-discontinuous model to simulate numerically an entire failure process is presented. Crack inception and its propagation is modelled by means of a gradient non-local model based on non-local displacements. To ...

    • A Kalman filter approach for the estimation of time dependent OD matrices exploiting bluetooth traffic data collection 

      Barceló Bugeda, Jaime; Montero Mercadé, Lídia; Bullejos, Manuel; Serch, Oriol; Carmona Bautista, Carlos (2012)
      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 ...

    • A Kalman-filter approach for dynamic OD estimation in corridors based on bluetooth and Wi-Fi data collection 

      Barceló Bugeda, Jaime; Montero Mercadé, Lídia; Marqués, Laura; Carmona Bautista, Carlos (2010)
      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 level-set aided single-phase model for the numerical simulation of free-surface flow on unstructured meshes 

      Schillaci, Eugenio; Jofre Cruanyes, Lluís; Balcázar Arciniega, Néstor; Lehmkuhl Barba, Oriol; Oliva Llena, Asensio (Elsevier, 2016-11-25)
      Article
      Open Access
      A new single-phase scheme for the numerical simulation of free-surface problems on 3-D unstructured meshes is presented. The flow field is obtained from the discrete solution of the incompressible Navier-Stokes equations, ...

    • A level-set method for thermal motion of bubbles and droplets 

      Balcázar Arciniega, Néstor; Oliva Llena, Asensio; Rigola Serrano, Joaquim (Institute of Physics (IOP), 2016)
      Conference report
      Open Access
      A conservative level-set model for direct simulation of two-phase flows with thermocapillary effects at dynamically deformable interface is presented. The Navier-Stokes equations coupled with the energy conservation equation ...

    • A novel approach for hybrid performance modelling and prediction of large-scale computing systems 

      Pllana, Sabri; Benkner, Siegfried; Xhafa Xhafa, Fatos; Barolli, Leonard (2009)
      Article
      Restricted access - publisher's policy
      We present a novel approach for hybrid performance modeling and prediction of large-scale parallel and distributed computing systems, which combines mathematical modeling and discrete-event simulation. We use mathematical ...

    • A novel model to predict a slap avalanche configuration using m:n-CAk cellular automata 

      Fonseca Casas, Pau; Colls, Màxim; Casanovas Garcia, Josep (Elsevier, 2010-08-23)
      Article
      Restricted access - publisher's policy
      The paper introduces a novel method to represent slap avalanche phenomena. The model is based on a cellular automaton generalization named m:n-$CA^k$. This generalization allows the use of different layers in a single ...

    • A Novel PMSM Hybrid Sensorless Control Strategy for EV Applications Based on PLL and HFI 

      Trancho, Elena; Ibarra Basabe, Edorta; Arias Pujol, Antoni; Salazar, Cristobal; Lopez, Iñigo; Diaz de Guereñu, A.; Peña, alberto (2016)
      Número de revista
      Open Access
      In this paper, a novel hybrid sensorless control strategy for Permanent Magnet Synchronous Machine (PMSM) drives applied to Electric Vehicles (EV) is presented. This sensorless strategy covers the EV full speed range and ...

    • A simulation study of the fleet sizing problem arising in offshore anchor handling operations 

      Shyshou, Aliaksandr; Gribkovskaia, Irina; Barceló Bugeda, Jaime (Elsevier, 2010-05)
      Article
      Restricted access - publisher's policy
      A fleet sizing problem arising in anchor handling operations related to movement of offshore mobile units is presented in this paper. Typically, the intensity of these operations is unevenly spread throughout the year. ...

    • A simulation-based approach for solving the flowshop problem 

      Juan Pérez, Angel Alejandro; Ruíz, Rubén; Lourenço, Helena R.; Mateo Doll, Manuel; Ionescu, Dragos (2010)
      Conference lecture
      Open Access
      A 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 ...

    • A virtual simulation approach to assess the effect of trocar-site placement and scar characteristics on the abdominal wall biomechanics 

      Tuset Serra, Lluis; López Cano, Manuel; Fortuny Anguera, Gerard; López Besora, Josep Maria; Herrero Sabartés, Juan; Puigjaner Riba, Dolors (Springer Nature, 2024-02-13)
      Article
      Open Access
      Analyses of registries and medical imaging suggest that laparoscopic surgery may be penalized with a high incidence of trocar-site hernias (TSH). In addition to trocar diameter, the location of the surgical wound (SW) may ...

    • Activity modes selection for project crashing through deterministic simulation 

      Mohanty, Ashok; Mishra, Jibitesh; Satpathy, Biswajit (School of Industrial and Aeronautic Engineering of Terrassa (ETSEIAT). Universitat Politècnica de Catalunya (UPC), 2011-12)
      Article
      Open Access
      Purpose: The time-cost trade-off problem addressed by CPM-based analytical approaches, assume unlimited resources and the existence of a continuous time-cost function. However, given the discrete nature of most resources, ...

    • An XFEM/CZM implementation for massively parallel simulations of composites fracture 

      Vigueras, Guillermo; Sket, Federico; Samaniego, Cristobal; Wu, Ling; Noels, Ludovic; Tjahjanto, Denny; Casoni Rero, Eva; Houzeaux, Guillaume; Makradi, Ahmed; Molina-Aldareguia, Jon M.; Vázquez, Mariano; Jérusalem, Antoine (Elsevier, 2015-07)
      Article
      Open Access
      Because of their widely generalized use in many industries, composites are the subject of many research campaigns. More particularly, the development of both accurate and flexible numerical models able to capture their ...

    • Analog simulation of high-harmonic generation in atoms 

      Argüello Luengo, Javier; Rivera Deán, Javier; Stammer, Philipp Maximilian; Maxwell, Andrew; Weld, David M.; Ciappina, Marcelo Fabian; Lewenstein, Maciej (2024-02-20)
      Article
      Open Access
      The demanding experimental access to the ultrafast dynamics of materials challenges our understanding of their electronic response to applied strong laser fields. For this purpose, trapped ultracold atoms with highly ...

    • Analogue quantum chemistry simulation 

      Argüello Luengo, Javier; González Tudela, Alejandro; Shi, Tao; Zoller, Peter; Cirac Sasturain, Juan Ignacio (Macmillan Publishers, 2019-10-10)
      Article
      Open Access
      Computing the electronic structure of molecules with high precision is a central challenge in the field of quantum chemistry. Despite the success of approximate methods, tackling this problem exactly with conventional ...

    • Analysis and RTL correlation of instruction set simulators for automotive microcontroller robustness verification 

      Espinosa, Jaime; Hernandez, Carles; Abella Ferrer, Jaume; de Andres, David; Ruiz, Juan C. (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Conference report
      Open Access
      Increasingly complex microcontroller designs for safety-relevant automotive systems require the adoption of new methods and tools to enable a cost-effective verification of their robustness. In particular, costs associated ...

    • Analysis and simulation of a synergetic environmental control and life support system for long duration spaceflight 

      Detrell Domingo, Gisela (Universitat Politècnica de Catalunya, 2015-12-11)
      Doctoral thesis
      Open Access
      Covenantee:   Universität Stuttgart
      Manned missions carried out in the last decades were either close to Earth or short missions. In contrast, Space Agencies future plans include manned exploration missions to asteroids, the Moon and finally Mars. The expected ...

    • Analysis of applications to improve the energy savings in residential buildings based on Systemic Quality Model 

      Fonseca Casas, Antoni; Fonseca Casas, Pau; Casanovas Garcia, Josep (2016-10-19)
      Article
      Open Access
      Creating a definition of the features and the architecture of a new Energy Management Software (EMS) is complex because different professionals will be involved in creating that definition and in using the tool. To simplify ...

    • Analysis of critical machine reliability in manufacturing cells 

      Djassemi, Manocher; Seifoddini, Hamid (OmniaScience, 2019-04)
      Article
      Open Access
      Purpose: In an increasingly competitive business environment, machine reliability problem merits special attention in operations of manufacturing cells. This is mainly due to flow line nature of the cellular layout, ...