Results 111 to 120 of about 184,803 (135)

Cumulative sum techniques for assessing surgical results

The Annals of Thoracic Surgery, 2003
The report by Novick and colleagues [1], in this issue of The Annals of Thoracic Surgery uses a cumulative sum (CUSUM) technique to assess the learning curve in telerobotic surgery. Novick and associates [2] have previously used CUSUMs to describe the learning curve of an academic surgeon, the change from on-pump to off-pump coronary bypass surgery [3],
Gary L, Grunkemeier, Ying Xing, Wu, Anthony P, Furnary   +2 more
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Multivariate Extensions to Cumulative Sum Control Charts

Quality and Reliability Engineering International, 2004
AbstractThere are several multivariate extensions to the venerable cumulative sum (CUSUM) chart. This work provides a comparison of the advantages and disadvantages of each, as well as performance evaluations and a description of their interrelationships. A new derivation is also provided.
Runger G.C., Testik M.C.
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Cumulative Sum Charts

1985
The control charting procedures discussed in Chapters 6 and 10 are based on predetermined levels of significance at which warning or action is taken. Alternative conditions may arise where the evidence for talking action is based on the result of several samples, which individually would not be significant.
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Cumulative Sum Curves and Their Prediction Limits

The Annals of Thoracic Surgery, 2009
W p p 3 m t d a e s d n this issue of The Annals of Thoracic Surgery, Dr Brevig and colleagues [1] describe their program to reduce lood transfusions in cardiac surgery. Their analysis of he changes in operative mortality during this process ses the risk-adjusted cumulative sum (CUSUM) of oberved minus expected deaths.
Gary L, Grunkemeier, Ruyun, Jin, YingXing, Wu   +2 more
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Cumulative sum charts

1977
The idea of cumulative plotting follows on naturally from the techniques described in the last chapter. We assume that we have inspection of a continuous process, and groups of n items are sampled at a series of equally spaced time intervals. The aim is to keep the process in statistical control, and detect changes in the mean or variance of the ...
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Cumulative sum (cusum) control schemes

Communications in Statistics - Theory and Methods, 1985
Cumulative Sum (CUSUM) quality control schemes are becoming widely used i n industry because they are powerful, versatile, and easy to use. They cumulate recent process data to quickly detect out-of-control situations. They also serve as a powerful diagnostic tool. There are now more than 10,000 CUSUM control schemes in use daily in Du Pont. This paper
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Cumulative Sum Schemes Using Gauging

Technometrics, 1962
Cusum schemes using gauging are developed for controlling the mean and standard deviation of a normal distribution. Tables are provided. The schemes for the mean are generally more sensitive than the corresponding Shewhart ones and only little less sensitive than cusum schemes using measured observations.
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A Robust-Likelihood Cumulative Sum Chart

Journal of the American Statistical Association, 2007
In practice, the cumulative sum (CUSUM) control chart is often used to detect small shifts in the mean of a normally distributed process, but it performs poorly for thick-tailed processes and for large shifts. This article provides a robust-likelihood cumulative sum (RLCUSUM) chart that discounts outliers and yet has the ability to detect large shifts ...
MacEachern, Steven N., Rao, Youlan, Wu, Chunjie   +2 more
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Cumulative Sum Processes

2023
Lajos Horváth, Gregory Rice
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Cumulative Sum Techniques.

The Statistician, 1965
T. K. Harrison, R. H. Woodward, P. L. Goldsmith   +2 more
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