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Quality of cut and basecutter blade confi guration for the mechanized harvest of green sugarcane
(2013-11-01)
Quality control is used to evaluate processes and products, and is a powerful tool for reducing variability. The objective of this study was to evaluate the quality of green sugarcane (Saccharum spp.) cutting for mechanized ...
Quality of cut and basecutter blade configuration for the mechanized harvest of green sugarcane
(Universidade de São Paulo (USP), 2013-01-01)
Quality control is used to evaluate processes and products, and is a powerful tool for reducing variability. The objective of this study was to evaluate the quality of green sugarcane (Saccharum spp.) cutting for mechanized ...
Gráficos de controle de Shewhart: Duas década de pesquisa
(Universidade Estadual Paulista (Unesp), 2007-12-13)
Esta tese apresenta, de forma compacta, os trabalhos mais importantes do autor, que são frutos de uma pesquisa de vinte anos sobre gráficos de Shewhart. O autor estudou os modelos que descrevem o tipo e o instante de ...
Monitoring the process mean and variance using a synthetic control chart with two-stage testing
(Taylor & Francis Ltd, 2009-01-01)
In this paper, we propose a synthetic control chart with two-stage testing (SyTS chart) to control the process mean and variance. As in the case of Shewhart control charts, samples are taken from the process at regular ...
Aplicação do controle estatístico do processo no envase de líquido em saquinhos
(Universidade Estadual Paulista (Unesp), 2017-12-08)
In order to acquire products with a high quality, the statistical process control (SPC) offers significant advantages in its use, allowing an efficient evaluation of the process and a subsequent monitoring. Thus, this work ...
Adaptive sample size control charts for attributes
(2001-01-01)
Theoretical results have shown that the X̄ chart with variable sample sizes (VSS) is quicker than the traditional X̄ chart for detecting moderate shifts in the process. The idea is to make the sample size vary depending ...
A hierarchy of adaptive (X)over-bar control charts
(Elsevier B.V., 2014)
Controle estatístico de manutenção
(Universidade Tecnológica Federal do ParanáPonta GrossaBrasilEngenharia de ProduçãoUTFPR, 2014-03-08)
This paper demonstrates a bibliographical survey of tools and systematic planning techniques of vehicle maintenance as well as a systematic approach to techniques for the investigation and control of processes using among ...
Monitoring bivariate and trivariate mean vectors with a Shewhart chart
(Wiley-Blackwell, 2017-12-01)
In this article, we propose the use of the mean chart to control multivariate processes. The basic idea is to control the mean vector of bivariate (X, Y) and trivariate (X, Y, Z) processes by alternating the charting ...