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Improved score tests in symmetric linear regression models
(TAYLOR & FRANCIS INC, 2008)
The class of symmetric linear regression models has the normal linear regression model as a special case and includes several models that assume that the errors follow a symmetric distribution with longer-than-normal tails. ...
Asymptotic properties of statistical estimators using multivariate Chi-squared measurements
(Academic Press Inc Elsevier Science, 2020-08)
This paper studies the problem of estimating a parameter vector from measurements having a multivariate chi-squared distribution. Maximum likelihood estimation in this setting is unfeasible because the multivariate chi-squared ...
A comparison of approximations to percentiles of the noncentral chi2-distributionA comparison of approximations to percentiles of the noncentral chi2-distribution
(Universidad de Costa Rica, Centro de Investigación en Matemática Pura y Aplicada (CIMPA), 2003)
The alpha-mu distribution: A physical fading model for the Stacy distribution
(Ieee-inst Electrical Electronics Engineers IncPiscatawayEUA, 2007)
Three Bartlett-type corrections for score statistics in symmetric nonlinear regression models
(SPRINGER, 2010)
We present simple matrix formulae for corrected score statistics in symmetric nonlinear regression models. The corrected score statistics follow more closely a chi (2) distribution than the classical score statistic. Our ...
Small-Sample Corrections for Score Tests in Birnbaum-Saunders Regressions
(TAYLOR & FRANCIS INC, 2011)
In this article, we deal with the issue of performing accurate small-sample inference in the Birnbaum-Saunders regression model, which can be useful for modeling lifetime or reliability data. We derive a Bartlett-type ...
Use of aspartate aminotransferase in diagnosing periodontal disease: a comparative study of clinical and microbiological parameters
(2003-03-01)
The objective of this study was to assess the association between the levels of enzyme aspartate aminotransferase (AST) in gingival crevicular fluid (GCF) with the BANA hydrolysis microbiological test (Perioscan) and ...
Use of aspartate aminotransferase in diagnosing periodontal disease: a comparative study of clinical and microbiological parameters
(2003-03-01)
The objective of this study was to assess the association between the levels of enzyme aspartate aminotransferase (AST) in gingival crevicular fluid (GCF) with the BANA hydrolysis microbiological test (Perioscan) and ...
Divine proportions and facial esthetics after manipulation of frontal photographs.
(2007-06-01)
AIM: To investigate the relationship between divine proportion and facial esthetics in frontal photographs as well as whether any of the 4 ratios for manipulation provide more favorable facial esthetics. MATERIAL AND ...