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Improving data perturbation testing techniques for Web services
(ELSEVIER SCIENCE INC, 2011)
The widespread use of service-oriented architectures (SOAs) and Web services in commercial software requires the adoption of development techniques to ensure the quality of Web services. Testing techniques and tools concern ...
Influence analysis for the generalized Waring regression model
(TAYLOR & FRANCIS LTD, 2020)
In this paper, we consider a regression model under the generalized Waring distribution for modeling count data. We develop and implement local influence diagnostic techniques based on likelihood displacement. Also we ...
Diagnóstico de influência local no modelo de calibração ultraestrutural com réplicas
(Universidade Federal de São CarlosUFSCarPrograma Interinstitucional de Pós-Graduação em Estatística - PIPGEsCâmpus São Carlos, 2016-12-09)
This paper aims to present the local influence diagnostic methodology of Cook (1986) along with the selection of the appropriate perturbation schemes proposed by Zhu et al. (2007) in ultrastructural calibration model with ...
On eigenvalue accumulation for non-self-adjoint magnetic operators
(ELSEVIER SCIENCE BV, 2017)
In this work, we use regularized determinants to study the discrete spectrum generated by relatively compact non-self-adjoint perturbations of the magnetic Schrodinger operator (-i del - A)(2) -b in R-3, with constant ...
On estimation and influence measures for the Negative Binomial regression model based on Q-function
(TAYLOR & FRANCIS INC, 2021)
In this paper the influence measures for the Negative Binomial regression model are presented. Based on the conditional expectation of the complete-data log-likelihood function we derive some influence measures, such as ...
Pulsatile flow between two coaxial porous cylinders with slip on inner cylinder for large frequency of pulsation.
(2011-10-13)
The unsteady component of axial flow of an incompressible fluid in the region lying between the annular spaces of two coaxial cylinders has been investigated. The outer cylinder is assumed to possess uniform permeability ...
Generalized wave operators, weighted Killing fields, and perturbations of higher dimensional spacetimes
(IOP Publishing, 2018-03-09)
We present weighted covariant derivatives and wave operators for perturbations of certain algebraically special Einstein spacetimes in arbitrary dimensions, under which the Teukolsky and related equations become weighted ...
Adiabaticity and gravity theory independent conservation laws for cosmological perturbations
(Elsevier, 2016)
We carefully study the implications of adiabaticity for the behavior of cosmological perturbations. There are essentially three similar but different definitions of non-adiabaticity: one is appropriate for a thermodynamic ...
On the multi-mode behavior of vibrating rods attached to nonlinear springs
(2020-05-01)
This paper investigates the harmonic response of vibrating rods with an array of nonlinear springs. The proposed analysis is multi-mode in the sense that the response functions are plotted over wide frequency bands where ...