Now showing items 1-20 of 140

    • 4He adsorbed outside a single carbon nanotube 

      Gordillo Bargueño, Maria Carmen; Boronat Medico, Jordi (2012-10-08)
      Article
      Open Access
      The phase diagrams of 4He adsorbed on the external surfaces of single armchair carbon nanotubes with radii in the range 3.42–10.85 Å are calculated using the diffusion Monte Carlo method. For nanotubes narrower than a ...
    • A highly parallel algorithm for computing the action of a matrix exponential on a vector based on a multilevel Monte Carlo method 

      Acebrón de Torres, Juan A.; Herrero Zaragoza, José Ramón; Monteiro, José (2020-01-01)
      Article
      Restricted access - publisher's policy
      A novel algorithm for computing the action of a matrix exponential over a vector is proposed. The algorithm is based on a multilevel Monte Carlo method, and the vector solution is computed probabilistically generating ...
    • 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)
      Conference report
      Open Access
      In 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 Monte Carlo approach for distribution reliability assessment considering time varying load and system reconfiguration 

      Martínez Magaña, Juan; Guerra Sánchez, Luis Gerardo (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
      Restricted access - publisher's policy
      This paper presents the basic features of a sequential analytical Monte Carlo approach for reliability evaluation of distribution systems. The document includes a description of the procedure, implemented in an open ...
    • A parallel Monte Carlo method for optimum allocation of distributed generation 

      Martínez Velasco, Juan Antonio; Guerra Sánchez, Luis Gerardo (2014-11-01)
      Article
      Restricted access - publisher's policy
      This paper presents a procedure for estimating the optimum allocation of distributed generation (DG) units in large distribution systems by using a multicore computing environment. The main goal of this work is to explore ...
    • A parametric study of occupational radiation dose in interventional radiology by Monte-Carlo simulations 

      Abdelrahman, Mahmoud; Lombardo, Pasquale; Camp Brunés, Anna; Duch Guillen, María Amor; Phillips, Christophe; Seret, Alain (2020-10-01)
      Article
      Restricted access - publisher's policy
      This paper presents the results of a parametric study on the occupational exposure in interventional radiology to explore the influence of various variables on the staff doses. These variables include the angiography beam ...
    • A simheuristic algorithm for service placement in community networks 

      Panadero Martínez, Javier; Calvet Liñán, Laura; Bayliss, Christopher; Marques Puig, Joan Manuel; Selimi, Mennan; Freitag, Fèlix (Institute of Electrical and Electronics Engineers (IEEE), 2020)
      Conference report
      Open Access
      The growing demand for network connectivity has boosted the number of community networks (CNs). CNs are decentralized and self-organized communication networks owned and managed at the edge by volunteers. Due to the ...
    • Absolute quantification in brain SPECT imaging 

      Cot Sanz, Albert (Universitat Politècnica de Catalunya, 2003-12-17)
      Doctoral thesis
      Open Access
      Certes malalties neurològiques estan associades amb problemes en els sistemes de neurotransmissió. Una aproximació a l'estudi d'aquests sistemes és la tomografia d'emissió SPECT (Single Photon Emission Computed Tomography) ...
    • Absorbed dose assessment in the presence of tissue heterogeneities in external radiotherapy 

      Bueno Vizcarra, Marta (Universitat Politècnica de Catalunya, 2013-12-13)
      Doctoral thesis
      Open Access
      The absorbed dose assessment in the presence of tissue heterogeneities in external radiotherapy is an issue that has concerned the medical physics community for almost three decades and it is still a matter of concern. ...
    • All-terminal reliability evaluation through a Monte Carlo simulation based on an MPI implementation 

      Pascual Martinez, Silvia; Otero Calviño, Beatriz; Rocco Sanseverino, Claudio M. (2012)
      Conference report
      Open Access
      All-terminal reliability (ATR), defined as the probability that every node in a network can communicate with every other node, is an important problem in research areas such as mobile ad-hoc wireless networks, grid computing ...
    • An algorithm to assess the need for clinical Monte Carlo dose calculation for small proton therapy fields based on quantification of tissue heterogeneity 

      Bueno Vizcarra, Marta; Paganetti, H.; Duch Guillen, María Amor; Schuemann, J. (2013)
      Article
      Restricted access - publisher's policy
      Purpose: In proton therapy, complex density heterogeneities within the beam path constitute a challenge to dose calculation algorithms. This might question the reliability of dose distributions predicted by treatment ...
    • Andreev-Bashkin effect in superfluid cold gases mixtures 

      Nespolo, Jacopo; Astrakharchik, Grigori; Recati, Alessio (2017-12-05)
      Article
      Open Access
      © 2017 The Author(s). Published by IOP Publishing Ltd on behalf of Deutsche Physikalische Gesellschaft. We study a mixture of two superfluids with density-density and current-current (Andreev-Bashkin) interspecies interactions. ...
    • Application of Photon Strength Functions to (n,gamma) measurements with the n_TOF TAC 

      Guerrero, Carlos; Abbondanno, U.; Aerts, G.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Pretel Sánchez, Carme; Poch, Agustí (PoS - Proceedings of Science, 2018)
      Conference report
      Open Access
      The neutron capture cross section measurements at the CERN n_TOF facility are performed using a new detection system, the segmented Total Absorption Calorimeter (TAC). All measurements are performed in reference to the ...
    • Application of the Narrow Escape Problem to Ion Channels 

      Riba Monzó, Martí (Universitat Politècnica de Catalunya, 2012-11)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      En els darrers anys, un dels camps cient´ıfico-t`ecnics que m´es s’ha desenvolupat ´es el de la bioenginyeria. En particular, les matem`atiques aplicades a la biologia han proporcionat resultats destacables, mitjan¸cant ...
    • aquaPELE: A Monte Carlo-based algorithm to sample the effects of buried water molecules in proteins 

      Municoy Terol, Martí; Roda Llordes, Sergi; Soler Viladrich, Daniel; Soutullo, Alberto; Guallar Tasies, Victor (2020-11-17)
      Article
      Restricted access - publisher's policy
      Water is frequently found inside proteins, carrying out important roles in catalytic reactions or molecular recognition tasks. Therefore, computational models that aim to study protein–ligand interactions usually have to ...
    • Bayesian calibration of a methane-air global scheme and uncertainty propagation to flame-vortex interactions 

      Mateu Armengol, Jan; Le Maître, Olivier; Vicquelin, Ronan (Elsevier, 2021)
      Article
      Restricted access - publisher's policy
      Simplified chemistry models are commonly used in reactive computational fluid dynamics (CFD) simulations to alleviate the computational cost. Uncertainties associated with the calibration of such simplified models have ...
    • Beyond Lee-Huang-Yang description of self-bound Bose mixtures 

      Ota, Miki; Astrakharchik, Grigori (2020-08-18)
      Article
      Open Access
      We investigate the properties of self-bound ultradilute Bose-Bose mixtures, beyond the Lee-Huang-Yang description. Our approach is based on the determination of the beyond mean-field corrections to the phonon modes of the ...
    • Capacity results on frequency-selective Rayleigh MIMO channels 

      Pérez Palomar, Daniel; Lagunas Hernandez, Miguel A.; Rodríguez Fonollosa, Javier (European Commission, 2000)
      Conference report
      Open Access
    • Cálculo de blindaje para una puerta de acceso a un bunker de irradiación con neutrones de 800 MeV y espectro cósmico 

      Mancisidor Uranga, Maite (Universitat Politècnica de Catalunya, 2014-06)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      La radiación cósmica puede inducir alteraciones en el funcionamiento de los dispositivos electrónicos. En los dispositivos de la instrumentación electrónica de la industria aeroespacial son muy frecuentes las perturbaciones ...
    • Characterization of a neutron-beta counting system with beta-delayed neutron emitters 

      Agramunt Ros, Jorge; Taín, J.L.; Gómez Hornillos, María Belén; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Pretel Sánchez, Carme; Riego Pérez, Albert; Tarifeño Saldivia, Ariel Esteban (2016-01-21)
      Article
      Open Access
      A new detection system for the measurement of beta-delayed neutron emission probabilities has been characterized using fission products with well known ß-delayed neutron emission properties. The setup consists of BELEN-20, ...