Showing 421 - 440 results of 693 for search '"Levi"', query time: 0.07s Refine Results
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    Wireless sensor node localization based on IPSO-MC by Yongyan LI, Jianping WU

    Published 2020-03-01
    “…To solve the problem of insufficient node positioning accuracy in wireless sensor networks,an algorithm based on improved particle swarm optimization by membrane computing (IPSO-MC) was proposed.Kent mapping was used to initialize the population and domain particles were introduced to improve the global optimization of the particle swarm.The weight factor and nonlinear extreme value perturbation were used to improve the local optimization ability of the particle swarm,and the Levy flight mechanism was used to optimize the individual position.Finally,the optimal solution of the particle swarm algorithm was obtained by the evolutionary rules of the membrane computing.Simulation experiments show that compared with the chicken flock algorithm,the improved particle swarm algorithm and the membrane computing,the proposed algorithm improves 3.24%,5.12% and 8.15% in the comparison of reference node ratio indicators,and the increase in the number of nodes indicators by 2.26%,7.82% and 9.81%,and the comparison of communication radius indicators increased by 2.15%,5.5% and 7.5%,respectively.This indicates that the algorithm has a good effect in node localization.…”
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  10. 430

    (In)visibilidade das camadas pobres na cidade pelo prisma dos cortiços paulistanos no Brasil by Octavie Paris

    Published 2019-03-01
    “…For this purpose, the notion of “regime of visibility” will be borrowed to Lévy and Lussault, enhancing the specificities of this mode of housing that is the cortiço.…”
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  11. 431

    Underwater source localization using time difference of arrival and frequency difference of arrival measurements based on an improved invasive weed optimization algorithm by Yunhang Lin, Zhenkai Zhang, Hamid Esmaeili Najafabadi

    Published 2022-05-01
    “…Abstract In this study, we propose an underwater localization method based on an improved invasive weed optimization algorithm to accurately locate moving sources in underwater sensor networks. First, the Lévy flight model is introduced into the invasive weed optimization algorithm to enhance its global search ability and avoid falling into local optima. …”
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  12. 432

    (In)visibilité des classes pauvres en ville par le prisme des cortiços paulistes au Brésil by Octavie Paris

    Published 2013-03-01
    “…For this purpose, the notion of “regime of visibility” will be borrowed to Lévy and Lussault, enhancing the specificities of this mode of housing that is the cortiço.…”
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  13. 433

    Geometry and Space-Time Extent of Pion Emission Region at FCC Energies by V. A. Okorokov

    Published 2016-01-01
    “…The mathematical formalism is presented for study of the peak shape of correlation function for general case of central-symmetrical Lévy–Feldheim distribution.…”
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  14. 434

    Modeling Temperature and Pricing Weather Derivatives Based on Temperature by Birhan Taştan, Azize Hayfavi

    Published 2017-01-01
    “…The model is designed as a mean-reverting process driven by a Levy process to represent jumps and other features of temperature. …”
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  15. 435

    #Revoganovoensinomedio: sintaxes espaciais sobre a (não) reforma do ensino médio brasileiro by Murilo Eduardo dos Santos Nazário, Caio Cesar Portugal

    Published 2024-12-01
    “…O referencial teórico ancora-se em subsídios da Cibercultura propostos por Pierre Levy (2010), Robert Kozinets (2014) e no que tange o Ensino Médio optou-se por contribuições críticas de Acacia Kuenzer (2000) e de Juarez Dayrrel (2011) no que se refere aos projetos de vida e escolarização nessa etapa. …”
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