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QUASI MONTE CARLO INTEGRATION IN GRID ENVIRONMENTS: FURTHER LEAPING EFFECTS

HEINZ HOFBAUER, ANDREAS UHL, PETER ZINTERHOF
2006 Parallel Processing Letters  
leaping effects, especially in heterogeneous settings which would be expected in GRID environments.  ...  The splitting of Quasi-Monte Carlo (QMC) point sequences into interleaved substreams has been suggested to raise the speed of distributed numerical integration and to lower the traffic on the network.  ...  Acknowledgments The work described in this paper is partially supported by the Austrian Grid Project, funded by the Austrian BMBWK (Federal Ministry for Education, Science and Culture) under contract GZ  ... 
doi:10.1142/s0129626406002654 fatcat:fcccak7345eknd6nazku5i77he

Grid-based Quasi-Monte Carlo Applications

Yaohang Li, Michael Mascagni
2005 Monte Carlo Methods and Applications  
Abstracts -In this paper, we extend the techniques used in Grid-based Monte Carlo applications to Grid-based quasi-Monte Carlo applications.  ...  However, the use of scrambled quasirandom sequence becomes a key to tackling this problem, and makes many of the techniques we used in Gridbased Monte Carlo applications effective in Grid-based quasi-Monte  ...  model onto a Grid system to implement Grid-based quasi-Monte Carlo computing.  ... 
doi:10.1163/1569396054027265 fatcat:moikhslfmzeoljfehidx7y6ixy

Grid-based Quasi-Monte Carlo Applications

Yaohang Li, Michael Mascagni
2005 Monte Carlo Methods and Applications  
Abstracts -In this paper, we extend the techniques used in Grid-based Monte Carlo applications to Grid-based quasi-Monte Carlo applications.  ...  However, the use of scrambled quasirandom sequence becomes a key to tackling this problem, and makes many of the techniques we used in Gridbased Monte Carlo applications effective in Grid-based quasi-Monte  ...  model onto a Grid system to implement Grid-based quasi-Monte Carlo computing.  ... 
doi:10.1515/1569396054027265 fatcat:tsmzitvg3faihdac55lax3adx4

Efficient Generation of Parallel Quasirandom Faure Sequences Via Scrambling [chapter]

Hongmei Chi, Michael Mascagni
2007 Lecture Notes in Computer Science  
Much of the recent work on parallelizing quasi-Monte Carlo methods has been aimed at splitting a quasirandom sequence into many subsequences which are then used independently on the various parallel processes  ...  Thus, we not only obtain the expected near-perfect speedup of the naturally parallel Monte Carlo methods, but the errors in the parallel computation is even smaller than if the computation were done with  ...  The accuracy of quasi-Monte Carlo integration depends not simply on the dimension of the integrands, but on their effective dimension [23] .  ... 
doi:10.1007/978-3-540-72584-8_96 fatcat:stje5gi36zcnlff2knmptsqgyy

Very High Resolution Spaceborne SAR Tomography in Urban Environment

Xiao Xiang Zhu, Richard Bamler
2010 IEEE Transactions on Geoscience and Remote Sensing  
Different model selection schemes for the estimation of the number of scatterers in a resolution cell are compared and proven to be applicable in practice.  ...  This paper demonstrates the tomographic potential of these SARs and the achievable quality on the basis of TerraSAR-X spotlight data of urban environment.  ...  A Monte Carlo simulation with 1000 realizations per SNR value was performed to evaluate the detection rates of different schemes.  ... 
doi:10.1109/tgrs.2010.2050487 fatcat:2cmueyvsfvdkpjrrpwlvv2eeg4

Stochastic approaches for modelling in vivo reactions

T.E. Turner, S. Schnell, K. Burrage
2004 Computational biology and chemistry  
In recent years, stochastic modelling has emerged as a physically more realistic alternative for modelling in vivo reactions.  ...  We then describe recent efforts to include the fluctuation effects caused by the structural organisation of the cytoplasm and the limited diffusion of molecules due to macromolecular crowding.  ...  The τ-leap method Choose a value for τ that satisfies the leap condition: i.e., a temporal leap by τ will result in a state change λ such that for every reaction channel R j , |a j (X+λ)−a j (X)| is "effectively  ... 
doi:10.1016/j.compbiolchem.2004.05.001 pmid:15261147 fatcat:bachzijekfdsfnmspzscewotcq

A hierarchical microstructure due to chemical ordering in the bcc lattice: Early stages of formation in a ferritic Fe–Al–Cr–Ni–Ti alloy

C.H. Liebscher, V.R. Radmilović, U. Dahmen, N.Q. Vo, D.C. Dunand, M. Asta, G. Ghosh
2015 Acta Materialia  
Kinetic-Monte-Carlo simulations support the observation of L2 1 nucleating within the B2 phase.  ...  Monte-Carlo simulations confirm these observations and it is found that interface energies of B2 and L2 1 reduce from 50 mJ/m 2 at 0 K to 11 mJ/m 2 at 973 K.  ...  The raw excess energies and polynomial fits are given in Figure 8b [ Figure 9 here] Kinetic-Monte-Carlo Kinetic-Monte-Carlo simulations with Kawasaki dynamics were employed to gain further insight  ... 
doi:10.1016/j.actamat.2015.03.043 fatcat:wrb4qm2jgfgeffal7rph6ykesq

Particle-in-Cell with Monte Carlo Simulation of SPT-100 Exhaust Plumes

Francesco Taccogna, Savino Longo, Mario Capitelli
2002 Journal of Spacecraft and Rockets  
Therefore, the plume of the SPT-100 has been modeled in several studies.'~'" In this paper a two-dimensional, hybrid axisymmetric particle-in-cell (PIC)''~'* model using test-particle Monte Carlo (TPMC  ...  The model takes into account the effects of nonisothermal electron temperature and the effects of violations of the quasi-neutral plasma hypothesis in the very near-field plume region.  ... 
doi:10.2514/2.3840 fatcat:vb734iyqqndr5b65tdg6apcphq

Modelling and simulation techniques for membrane biology

K. Burrage, J. Hancock, A. Leier, D. V. Nicolau
2007 Briefings in Bioinformatics  
Andre¤ Leier is a postdoctoral fellow in the Advanced Computational Modelling Centre at the University of Queensland, with research interests in Computational and Systems Biology, in particular stochastic  ...  , spatiotemporal, and multi-scale models of cell signalling and genetic regulation and the roles of delay in cellular processes.  ...  Further extensions of this idea have led to simulation environments that attempt to model the behaviour of lipid rafts in which both proteins and rafts can diffuse on the lattice [65] .  ... 
doi:10.1093/bib/bbm033 pmid:17693422 fatcat:llbbjzxk5neshji6qtex65sere

Amplitude estimation via maximum likelihood on noisy quantum computer [article]

Tomoki Tanaka, Yohichi Suzuki, Shumpei Uno, Rudy Raymond, Tamiya Onodera, Naoki Yamamoto
2020 arXiv   pre-print
tasks such as the Monte Carlo methods.  ...  One of those algorithms is based on the maximum likelihood estimate with parallelized quantum circuits; in this paper, we extend this method so that it can deal with the realistic noise effect.  ...  The reason of this choice is that, to compute such a multiple integration with more than five variables, the Monte-Carlo method is usually employed rather than grid-based numerical integration approaches  ... 
arXiv:2006.16223v2 fatcat:yqk2uzvpf5finn66qh47pgbibm

Electron Accelerators for Research, Industry and Environment − the INCT Perspective [article]

Andrzej G. Chmielewski, Zbigniew Zimek
2019 Zenodo  
result of work carried out under the Horizon 2020 ARIES project and concerns the development of new technologies to ensure that future accelerators will be more affordable, reliable, sustainable and more effective  ...  The calculation was made with application of computer program based on Monte Carlo method for pencil type electron beam with electron energy 10 MeV.  ...  The computer simulations of circumferential dose distribution initiated by scanned electron beam in flat irradiated material were performed by Monte Carlo method with utilization of the software program  ... 
doi:10.5281/zenodo.3237553 fatcat:smhaeiblt5crbg5vzqpgjwayey

Modeling and Simulating Flowing Plasmas and Related Phenomena

S. A. Ledvina, Y.-J. Ma, E. Kallio
2008 Space Science Reviews  
The magnetohydrodynamic (MHD), test-particle/Monte-Carlo and hybrid models used in simulating flowing plasmas are described.  ...  The interested reader can find them derived in a variety of plasma physics text (cf.  ...  These results are in very good agreement. Hence, the test-particle/Monte-Carlo approach is reasonable in this case.  ... 
doi:10.1007/s11214-008-9384-6 fatcat:yttni2uyerbqpmiegsdyuibt3a

Amplitude estimation via maximum likelihood on noisy quantum computer

Tomoki Tanaka, Yohichi Suzuki, Shumpei Uno, Rudy Raymond, Tamiya Onodera, Naoki Yamamoto
2021 Quantum Information Processing  
computing tasks such as the Monte Carlo methods.  ...  In this paper, we extend this method so that it incorporates the realistic noise effect, and then give an experimental demonstration on a superconducting IBM Quantum device.  ...  The results presented in this paper were obtained in part using an IBM Quantum quantum computing system as part of the IBM Quantum Network.  ... 
doi:10.1007/s11128-021-03215-9 fatcat:o6khyafgwzdt7ml2cmtmsl7u2i

Dynamical Processes in Globular Clusters [chapter]

Stephen L. W. McMillan
2014 Astrophysics and Space Science Library  
Globular clusters are among the most congested stellar systems in the Universe.  ...  Internal dynamical evolution drives them toward states of high central density, while simultaneously concentrating the most massive stars and binary systems in their cores.  ...  Freitag's Monte Carlo code, geared mainly to studies of galactic nuclei, interpolates encounter outcomes from a pre-computed grid of smoothed Particle Hydrodynamics (SPH) simulations [40] .  ... 
doi:10.1007/978-3-662-44434-4_10 fatcat:keqnifsgk5dvxapm4yhpybunqi

Smilei : A collaborative, open-source, multi-purpose particle-in-cell code for plasma simulation

J. Derouillat, A. Beck, F. Pérez, T. Vinci, M. Chiaramello, A. Grassi, M. Flé, G. Bouchard, I. Plotnikov, N. Aunai, J. Dargent, C. Riconda (+1 others)
2018 Computer Physics Communications  
SMILEI is a collaborative, open-source, object-oriented (C++) particle-in-cell code.  ...  To benefit from the latest advances in high-performance computing (HPC), SMILEI is co-developed by both physicists and HPC experts.  ...  For all quasi-particles (henceforth referred to as quasi-ions) of the considered species, a Monte-Carlo procedure has been implemented that allows to treat multiple ionization events in a single timestep  ... 
doi:10.1016/j.cpc.2017.09.024 fatcat:e3delqy6ongx3cv54cij4qople
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