Symmetric Distribution
Mostrando 13-24 de 69 artigos, teses e dissertações.
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13. On the modelling of rotational effects in the lower convective region of the sun
The purpose of this work is to study effects of differential rotation in the lower convective region of the Sun. Similar to MHD case; the governing equations are separated in variables, allowing numerical integration in this layer. This algorithm facilitates solutions of more complicated systems, with less computing time. Two different known rotation profile
Brazilian Journal of Physics. Publicado em: 2010-06
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14. Middleware seguro para redes de sensores sem fio
There is a variety of application scenarios in wireless sensor networks such as medical monitoring, military, home and office security, agriculture and so on. These applications deal with Wireless Sensor Networks (WSNs) odd particularities such as limited power and computational capacities, hardware heterogeneity, low bandwidth, dynamic topology and scalabil
Publicado em: 2009
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15. Skew normal mixed models in microarray data generated from complex pedigrees / Modelos mistos normais assimÃtricos em dados de microarrays originados de pedigrees complexos / Modelos mistos normais assimÃtricos em dados de microarrays originados de pedigrees complexos / Skew normal mixed models in microarray data generated from complex pedigrees
Estimates of heritability for gene expression are scarce and commonly originated from family structures, in which the variability of responses among and within families are provided under a uniform covariance structure for related individuals, ignoring the known relationship among all individuals in the pedigree. Gauss-Markov normal mixed models are the usua
Publicado em: 2009
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16. EstatÃstica de contagem de carga e efeitos de interferÃncia em sistemas mesoscÃpicos
In this thesis we presented a detailed study about full counting statistics of transmitted charge and accumulated phase and the quantum interference corrections to the average conductance and the average shot-noise power in non-ideal ballistic chaotic cavities. In the theoretical analysis of this mesoscopic system, we obtained analytical expressions for the
Publicado em: 2009
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17. Estudos evolutivos em Myrtaceae : aspectos citotaxonomicos e filogeneticos em Myrteae, enfatizando Psidium e generos relacionados
Myrtaceae is one of the most diverse families in Neotropical region; principally belong to Mata Atlântica and Cerrado, reaching 10 to 15% of biodiversity of these biomes. Myrteae is the most generically tribe (73 genera and 2375 species) in this family. Generally, South-American taxa are considered a complex group and biosystematic studies are necessary to
Publicado em: 2009
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18. Função de acoplamento t-Student assimetrica : modelagem de dependencia assimetrica / Skewed t-Student copula function : skewed dependence modelling
The Skewed t-Student distribution family, constructed upon the multivariate normal mixture distribution, known as mean-variance mixture, composed with the Inverse-Gamma distribution, has many desirable flexibility properties for many distribution asymmetry structures. These properties are explored by constructing copula functions with asymmetric dependence.
Publicado em: 2008
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19. Rotating and counterrotating relativistic thin disks as sources of stationary electrovacuum spacetimes
A detailed study is presented of the counterrotating model (CRM) for electrovacuum stationary axially symmetric relativistic thin disks of infinite extension without radial stress, in the case when the eigenvalues of the energy-momentum tensor of the disk are real quantities, so that there is not heat flow. We find a general constraint over the counterrotati
Brazilian Journal of Physics. Publicado em: 2007-09
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20. Correlation of the ghost and the quark in the lattice landau gauge QCD
Effects of the quark field on the ghost propagator of the lattice Landau gauge are investigated by using the unquenched SU(3) configurations produced by the MILC collaboration and compared with quenched gauge configurations of SU(2) first copy of the overrelaxation gauge fixing, the parallel tempering (PT) gauge fixing and quenched SU(3) 56(4) configurations
Brazilian Journal of Physics. Publicado em: 2007-03
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21. Estratégias evolutivas com mutações governadas por distribuições estáveis
Evolutionary strategies normally use the Gaussian distributions in order to control the mutations over real values. Since there are other kinds of distributions in nature and in mathematics, such as those of Cauchy, Lévy and S-Lévy, in addition to several stable distributions, it seems a natural step to extend the standard approach, by using an algorithm t
Publicado em: 2007
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22. Species assembly rules and the biodiversity-ecosystem functioning relationship / Regras entre assemblÃias de espÃcies: relaÃÃo entre biodiversidade e funcionamento do ecossistema
The biological diversity of ecosystems has important implications for their functioning. However, in order for reliable predictions to be made on the effects of species extinctions and/or additions on particular ecosystem functions, accurate knowledge is required on the ways in which species interact. These interactions in turn are important drivers of commu
Publicado em: 2007
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23. First-Price Auction Symmetric Equilibria with a General Distribution
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Fundação Getulio Vargas. Publicado em: 01/05/2006
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24. Numerical simulation of magnetic field for electromagnetic casting of hollow billets
Distribution of magnetic field during electromagnetic continuous casting of hollow billets of aluminum alloys is studied by the method of numerical simulation. Two-dimensional axis-symmetric finite element model including water-cooled core, outer mould, ingot, inner and outer induction coil has been established. Distribution of magnetic flux density is obtai
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-09