Cook Distance
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Allometric models to biomass in restoration areas in the Atlantic rain forest
ABSTRACT The objective of the study was to present mathematical models and strategies for fitting equations to estimate dry biomass for tree species in forest restoration areas. The presence of outliers was analyzed in each fitted equation using values of the matrix H, leverage points, means of standard and studentized residuals, and of influential points th
Floresta Ambient.. Publicado em: 01/02/2018
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2. IdentificaÃÃo de Pontos Influentes em uma Amostra AleatÃria de PrÃ-formas da DistribuiÃÃo Bingham Complexa (DistÃncia de Cook e MÃtodos de Bootstrap)
The objective of this dissertation is the evaluation and application of influence analysis methods in statistical shape analysis. Through the model of deleting cases (CDM) is obtained a measure of the Cook distance when the data set has the complex Bingham distribution. Through simulations of Monte Carlo and the bootstrap method the estimation of region of c
Publicado em: 2009
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3. DiagnÃstico em modelos simÃtricos de regressÃo
The statistical modelling using the assumption of normally distributed errors can be strongly influenced by extreme observations. This motivates the study on regression techniques that are roobust in presenceof this type pof observations. As an alternative, models in wich the error term belongs to the symmetrical class can be considered. This class of models
Publicado em: 2005
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4. O controle dos movimentos voluntarios do ombro em nadadores com instabilidade glenoumeral
The Shoulder Impingement Syndrome (SIS) is often observed in repetitive movements of the shoulder above 60° during the performance of occupational or athletic activities. This dysfunction affects a great number of athletes, and in special 80% of the professional swimmers. In this population the glenohumeral instability is frequently associated with this syn
Publicado em: 2001
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5. Plasmolysis bays in Escherichia coli: are they related to development and positioning of division sites?
Plasmolysis bays, induced in Escherichia coli by hypertonic treatment, are flanked by zones of adhesion between the plasma membrane and the cell wall. To test the proposition of Cook et al. (W. R. Cook, F. Joseleau-Petit, T. J. MacAlister, and L. I. Rothfield, Proc. Natl. Acad. Sci. USA 84:7144-7148, 1987) that these zones, called periseptal annuli, play a r
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6. Nucleoid-Independent Identification of Cell Division Sites in Escherichia coli
The mechanism used by Escherichia coli to determine the correct site for cell division is unknown. In this report, we have attempted to distinguish between a model in which septal position is determined by the position of the nucleoids and a model in which septal position is predetermined by a mechanism that does not involve nucleoid position. To do this, fi
American Society for Microbiology.
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7. Interisland and interarchipelago transfer of stone tools in prehistoric Polynesia.
Tracing interisland and interarchipelago movements of people and artifacts in prehistoric Polynesia has posed a challenge to archaeologists due to the lack of pottery and obsidian, two materials most readily used in studies of prehistoric trade or exchange. Here we report the application of nondestructive energy-dispersive x-ray fluorescence (EDXRF) analysis