Buscar
Mostrando ítems 1-10 de 413
On estimation and influence diagnostics for zero-inflated negative binomial regression models
(ELSEVIER SCIENCE BV, 2011)
The zero-inflated negative binomial model is used to account for overdispersion detected in data that are initially analyzed under the zero-Inflated Poisson model A frequentist analysis a jackknife estimator and a ...
In situ evidence of non-zero reflectance in the OLCI 1020nm band for a turbid estuary
(Elsevier Science Inc, 2012-02)
A spectroradiometer able to measure up to 2500nm has been used to measure the reflectance for the Ocean and Land Color Instrument (OLCI) 1020nm band. In July and October 2010 two measurement campaigns were organized at the ...
Análises Bayesiana para o modelo de regressão Birnbaum-Saunders com zeros ajustados
(Universidade Federal de São CarlosUFSCarPrograma Interinstitucional de Pós-Graduação em Estatística - PIPGEsCâmpus São Carlos, 2021-08-11)
Modeling based on the Birnbaum-Saunders distribution has received considerable attention
in recent years. In this work we consider the reparametrized Birnbaum-Saunders
distribution with zero-adjusted (ZARBS) (SANTOS-NETO ...
On zero-input stability inheritance for time-varying systems with decaying-to-zero input power
(Elsevier Science, 2017-06)
Stability results for time-varying systems with inputs are relatively scarce, as opposed to the abundant literature available for time-invariant systems. This paper extends to time-varying systems existing results that ...
Produção do tomateiro: frequências de colheitas e composição de parcela
(Universidade Federal de Santa MariaBrasilAgronomiaUFSMPrograma de Pós-Graduação em AgronomiaCentro de Ciências Rurais, 2019-02-25)
The tomato (Solanum lycopersicum L.) present fractional fruit production commonly described
as multiple harvests. The adjustment of the production of the fruit according to the harvests to
non-linear models can provide ...
On the dynamics of a triparametric family of optimal fourth-order multiple-zero finders with a weight function of the principal mth root of a function-to function ratio
Under the assumption of known root multiplicity m is an element of N, a triparametric family of two-point optimal quartic-order methods locating multiple zeros are investigated in this paper by introducing a weight function ...
On close to scalar families for fractional evolution equations: zero–one law
(2019-08-15)
For {Rα,β(t)}t≥0 being a strongly continuous (α, β) -resolvent family on a Banach space, we show that the assumption supt>0‖1tβ-1Eα,β(λtα)Rα,β(t)-I‖=:θ<1 yields that Rα , β(t) = tβ - 1Eα , β(λtα) for all t> 0 and λ≥ 0 , ...
On ecological aspects of dynamics for zero slope regression for water pollution in Chile
(2019)
Zero slope regression is an important problem in chemometrics, ranging from challenges of intercept-bias and slope 'corrections' in spectrometry, up to analysis of administrative data on chemical pollution in water in the ...
A new class of discrete models for the analysis of zero-modified count data
(Universidade Federal de São CarlosUFSCarPrograma Interinstitucional de Pós-Graduação em Estatística - PIPGEsCâmpus São Carlos, 2020-04-03)
In this work, a new class of discrete models for the analysis of zero-modified count data has been introduced. The proposed class is composed of hurdle versions of the Poisson-Lindley, Poisson-Shanker, and Poisson-Sujatha ...