Results 11 to 20 of about 6,021 (172)

Control charts for monitoring drip irrigation with different hydraulic heads

open access: yesRevista Ambiente & Água, 2020
This study monitored a drip irrigation system with different hydraulic heads, using control charts. The study included 25 tests, and was conducted at the Experimental Nucleus of Agricultural Engineering of the State University of Western Paraná, located ...
Allan Remor Lopes   +4 more
doaj   +1 more source

The development of egg hatching and storage machines equipped with cooling and heating systems and iot [PDF]

open access: yes, 2021
The development of egg hatching and storage machines equipped with cooling and heating systems and IoT was for helping chicken breeders to address the issue of chicken production shortages. To produce large numbers of poultry production, eggs hatching is
Abdulrahman, Khairul Anuar   +6 more
core   +1 more source

Shewhart's control charts and process capability ratio applied to a sewage treatment station [PDF]

open access: yesEngenharia Agrícola, 2014
The current study used statistical methods of quality control to evaluate the performance of a sewage treatment station. The concerned station is located in Cascavel city, Paraná State.
Fábio Orssatto   +3 more
doaj   +1 more source

Projeto econômico de cartas adaptativas para monitoramento de processos Economic design of adaptive control charts for process monitoring

open access: yesGestão & Produção, 2002
Cartas de controle estatístico vêm sendo utilizadas com sucesso no monitoramento do desempenho de processos industriais. Nos últimos anos, diversas modificações nas cartas de Shewhart foram propostas na literatura.
Renato Michel, Flávio S. Fogliatto
doaj   +1 more source

Diagram Kendali MAD pada Harga Cabai Rawit di Jawa Tengah

open access: yesJurnal Matematika, 2021
Food price policies affect the stabilization of food prices in Indonesia. The control chart is one of the tools used to measure the stabilization of food prices. The control chart was first introduced by W.A. Shewhart.
Yolanda Norasia
doaj   +1 more source

Design of an Exponentially Weighted Moving Average (EWMA) and An Exponentially Weighted Root Mean Square (EWRMS) Control Chart [PDF]

open access: yes, 2017
Some of the most widely-used form of control charts Walter Shewhart charts are sensitive to detecting relatively large shifts in the process. On Shewhart charts every observation is plotted independently of previous observations.The quantity plotted on ...
Rashid, A. P. (Asst)
core   +1 more source

Fuzzy Xbar and S Control Charts Based on Confidence Intervals

open access: yesJournal of Advanced Research in Natural and Applied Sciences, 2021
There have been changes since the companies have realized the important role of quality improvement in their success. If they are able to produce high quality products and satisfy demands, then they can survive in competitive global markets.
Nilufer Pekin Alakoc
doaj   +1 more source

Control Charts and the Effect of the Two-Component Measurement Error Model [PDF]

open access: yes, 2007
Monitoring algorithms, such as the Shewhart and Cusum control charts, are often used for monitoring purposes in the chemical industry or within an environmental context.
Cocchi, Daniela, Scagliarini, Michele
core   +1 more source

A novel experience in the use of control charts for the detection of nosocomial infection outbreaks

open access: yesClinics, 2011
OBJECTIVE: This study aims to compare different control charts to monitor the nosocomial infection rate per 1,000 patient-days. METHODS: The control charts considered in this study were the traditional Shewhart chart and a variation of this, the ...
Isabel Cristina Gomes   +2 more
doaj   +1 more source

Control chart limits based on true process capability with consideration of measurement system error

open access: yesInternational Journal of Metrology and Quality Engineering, 2016
Shewhart X̅ and R control charts and process capability indices, proven to be effective tools in statistical process control are widely used under the assumption that the measurement system is free from errors.
Amara Souha Ben   +2 more
doaj   +1 more source

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