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The reversed-axis method to estimate precision in standard additions analysis
(2016-01-01)
The standard additions (SA) method is one of the most important calibration strategies in quantitative chemical analysis. It is a powerful tool to minimize matrix effects and enable precise and accurate determinations. On ...
An Efficient Probabilistic Methodology to Evaluate Web Sources as Data Source for Warehousing
Internet is the largest source of data and the requirement of data analytics have fueled the data warehouse to switch from structured conventional Data Warehouse to complex Web Data Warehouse. The dynamic and complex nature ...
Técnicas geoestatísticas aplicadas ao mapeamento de variáveis limnológicas e quantificação da incerteza associada às estimativas
(2015-01-01)
Aim: This study aimed to map the concentrations of limnological variables in a reservoir employing semivariogram geostatistical techniques and Kriging estimates for unsampled locations, as well as the uncertainty calculation ...
Análise do desempenho de gráficos de controle X-Bar considerando diferentes estimadores do desvio padrão
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Engenharia de Produção - PPGEPCâmpus São Carlos, 2018-02-16)
The reference works about control charts consider the statistical parameters as known to calculate the control limits. However, in the last decades, the literature about SPC (Statistical Process Control) has indicated a ...
Inequalities involving the mean and the standard deviation of nonnegative real numbers
(GORDON AND BREACH SCIENCE PUBLISHERS, 2006)
On the mean-standard deviation frontier
(El Colegio de México, Centro de Estudios Económicos, 2012)
Adaptive control charts for attributes
(2003-06-01)
We develop a general model for adaptive c, np, u and p control charts in which one, two or three design parameters (sample size, sampling interval and control limit width) switch between two values, according to the most ...