Discrete Distributions
Mostrando 1-12 de 68 artigos, teses e dissertações.
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1. Geographical distribution of Trypanosoma cruzi in triatomine vectors in the State of Mato Grosso do Sul, Brazil
Introduction This work presents the initial findings of a molecular epidemiological investigation of Trypanosoma cruzi in triatomine insects in State of Mato Grosso do Sul. Methods A total of 511 t
Rev. Soc. Bras. Med. Trop.. Publicado em: 2014-12
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2. Discrete Distributions Estimation via Bernstein Copulas / Estimação de distribuições discretas via cópulas de Bernstein
As relações de dependência entre variáveis aleatórias é um dos assuntos mais discutidos em probabilidade e estatística e a forma mais abrangente de estudar essas relações é por meio da distribuição conjunta. Nos últimos anos vem crescendo a utilização de cópulas para representar a estrutura de dependência entre variáveis aleatórias em uma
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/03/2012
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3. GENERALIZAÇÃO DO MODELO DE BARREIRAS DE ENERGIAS LIVRES ALEATÓRIAS PARA O ESTUDO DA CONDUTIVIDADE AC DE SISTEMAS SÓLIDOS DESORDENADOS / GENERALIZAÇÃO DO MODELO DE BARREIRAS DE ENERGIAS LIVRES ALEATÓRIAS PARA O ESTUDO DA CONDUTIVIDADE AC DE SISTEMAS SÓLIDOS DESORDENADOS
In this work it is proposed a generalized equation for universal behavior of the alternating conductivity, σ*(ω) = σ‟(ω) + iσ(ω), of disordered solid materials based on the Random Free Energy Barrier model deduced by J. C. Dyre in 1985. In this context, we tried to understand the conduction mechanisms and charge transport
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/11/2011
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4. Técnicas de processamento não linear de sinais aplicadas à investigação de limitações práticas do procedimento de ventilação mecânica não invasiva
Individuals with respiratory system dysfunctions or who are recovering from complex surgeries may have difficulty to sustain spontaneous breathing. The mechanical ventilation is a clinical procedure that supports ventilation until the patient is recovered. Noninvasive mechanical ventilation is especially remarkable as it can be used outside the hospital, in
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/05/2011
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5. Métodos Monte Carlo Quântico e Outer Valence Green s function aplicados na obtenção de energias de ionização de sistemas atômicos e moleculares e na construção e interpretação de diagramas de correlação / Quantum Monte Carlo and Outer Valence Green s function methods applied to obtain ionization energies of atomic and molecular systems and to construction and interpretation of correlation diagrams
The study was divided into 4 parts: Simple Ionization Energies: We evaluated the ability of MQC and OVGF methods in describing the values of the ionization energy of valence and core and tested the use of relaxed wave functions. The range of deviations obtained with the method of diffusion quantum Monte Carlo (MCQD), in relation to the experimental values, i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/03/2011
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6. A practical guide for operational validation of discrete simulation models
As the number of simulation experiments increases, the necessity for validation and verification of these models demands special attention on the part of the simulation practitioners. By analyzing the current scientific literature, it is observed that the operational validation description presented in many papers does not agree on the importance designated
Pesquisa Operacional. Publicado em: 2011-04
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7. Transição quântico-clássica em sistemas com propensão coletiva / Quantum-to-classical transition in systems with collective propensity
In this thesis, we studied the behavior of quantum systems which in the classical limit may exhibit either regular or chaotic behavior. Our study was based on the dynamical characterization of the, chaotic or regular, behavior of these systems in the classical limit through the analysis of the structure of phase-space distributions functions. Particularly, w
Publicado em: 2010
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8. Contribuições teoricas para o estudo de funções de distribuição correlacionadas em um canal sem fio / Theoretical contributions to the study of correlated distributions funcions of wireless channels
In wireless communications, the multipath fading is modeled by several distributions including Hoyt, Rayleigh, Weibull, Nakagami-m, and Rice. In this thesis, new, exact expressions for the bivariate Hoyt (Nakagami-q) processes with arbitrary correlation in a nonstationary environment are derived. More specifically, the following are obtained: joint probabili
Publicado em: 2009
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9. Application of theory of value-end of the nucleus and smoothing Stochastic in income distribution of the poor in the state of Cearà / AplicaÃÃo da teoria do valor extinto e suavizaÃÃo por nÃcleo estocÃstico na distribuiÃÃo de renda dos pobres no estado do CearÃ
The research of estimating of poverty in Brazil have been concentrated using the ools of statistical inference or the inefficient use of some ad hoc distributions, or hrough studies of convergence as the b-convergence and s-convergence. This work ontributed to a discussion of different methods of non-parametric statistical inference, with the aim of estimati
Publicado em: 2009
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10. MONOENERGETIC AND POLYENERGETIC GAMMA RAY COMPUTER TOMOGRAPHY FOR MULTIPHASE SYSTEMS ANALYSIS / Análise de sistemas multifásicos utilizando tomografia computadorizada Gama monoenergética e polienergética
It is important to recognize that at the heart of chemical transformations in all process and energy industries is multiphase reator technology, as over 99% of reator systems require the presence of more than one phase for proper operation. Tomography is a powerful technique capable of determining the effect of operating and design parameters on the phase ho
Publicado em: 2009
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11. Inflated beta regression models / Modelos de regressão beta inflacionados
The last years have seen new developments in the theory of beta regression models, which are useful for modelling random variables that assume values in the standard unit interval such as proportions, rates and fractions. In many situations, the dependent variable contains zeros and/or ones. In such cases, continuous distributions are not suitable for modeli
Publicado em: 2008
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12. The van Hemmen model in the presence of a random field
The van Hemmen model with a random field is studied to analyze the tricritical behavior in the Ising spin glass phase. The free energy and phase diagram (T versus H and T versus Jo/J, where H is the root mean square deviation of the magnetic field, Jo and J are the ferromagnetic and root mean square deviation exchange, respectively) are calculated for the mo
Brazilian Journal of Physics. Publicado em: 2007-06