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Preliminary results concerning the VSS X- chart with unknow in-control parameters
(2010-12-01)
The VSS X- chart is known to perform better than the traditional X- control chart in detecting small to moderate mean shifts in the process. Many researchers have used this chart in order to detect a process mean shift ...
The no-central chi-square chart with two-stage samplings
(2004-12-01)
Throughout this article, it is assumed that the no-central chi-square chart with two stage samplings (TSS Chisquare chart) is employed to monitor a process where the observations from the quality characteristic of interest ...
Respiratory morbidity variability in function of environmental variables in the Metropolitan Region of São Paulo, Brazil
(Universidad de La SalleBogotá, 2013)
This study evaluates the influence of the air pollutants and meteorological variables on children respiratory morbidity in different households at the city of Sao Paulo, Brazil. The households were selected for the Wheezing ...