The Poisson CUSUM Chart for Monitoring Small Counts: Addressing the Estimation Uncertainty. [PDF]
Biom JABSTRACT This study addresses the impact of estimating in‐control parameters on the performance of the Poisson cumulative sum (CUSUM) chart in detecting an increase in the mean when the counts are small. To reduce false signals induced by estimation uncertainty, recommendations prescribe impractically large sample sizes or propose methods that widen ...
Heidema S +3 more
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Prediction Intervals for Overdispersed Poisson Data and Their Application in Medical and Pre-Clinical Quality Control. [PDF]
Pharm StatABSTRACT In pre‐clinical and medical quality control, it is of interest to assess the stability of the process under monitoring or to validate a current observation using historical control data. Classically, this is done by the application of historical control limits (HCL) graphically displayed in control charts. In many applications, HCL are applied
Menssen M +4 more
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Health Science Reports, 2023 Background and Aim Timely detection of outbreaks is one of the main purposes of the health surveillance system. The presence of appropriate methods in the detection of outbreaks can have an important role in the timely detection of outbreaks.
Sara Minaeian +3 more
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GRAFIK PENGENDALI NON PARAMETRIK EMPIRIK
Media Statistika, 2008 Shewhart control chart is constructed base on the normality assumption of process. If the normality is fail then the empirical control chart can be an alternative solution.
Rukun Santoso
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Control charts for monitoring drip irrigation with different hydraulic heads
Revista 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
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Control of control charts [PDF]
, 2005 Although the Shewhart chart is widely used in practice because of its simplicity, applying this control chart to monitor the mean of a process may lead to two types of problems.
Nurdiati, Sri
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ANAEROBIC DIGESTION STABILITY TEST BY SHEWHART CONTROL CHART [PDF]
Engenharia Agrícola, 2017 The anaerobic digestion (AD) operation complexity raise the importance of stability testing to verify whether the operating conditions are under control and whether the process is working as required.
Michael S. Alcantara +3 more
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Design of an Exponentially Weighted Moving Average (EWMA) and An Exponentially Weighted Root Mean Square (EWRMS) Control Chart [PDF]
, 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)
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Designing an Effective Combined Shewhart-CUSUM Control Scheme with Exponentially Distributed Data [PDF]
International Journal of Mathematical, Engineering and Management Sciences, 2019 In this paper, the Combined Shewhart-CUSUM control scheme has been proposed to monitor the production process when the quality characteristic follows exponential distribution to quickly detect the shift in the process.
Dushyant Tyagi
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Prediction Intervals for Overdispersed Binomial Endpoints and Their Application to Toxicological Historical Control Data. [PDF]
Pharm StatABSTRACT For toxicology studies, the validation of the concurrent control group by historical control data (HCD) has become requirements. This validation is usually done by historical control limits (HCL), which should cover the observations of the concurrent control with a predefined level of confidence.
Menssen M, Rathjens J.
europepmc +2 more sources