Results 211 to 220 of about 193,946 (258)
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Cumulative sum scoring for medical students
The Clinical Teacher, 2012Summary Context: A variety of subjective techniques are used to assess clinical skills during medical training. The objective assessment of practical skill proficiency is not currently widespread.
Harry, Murgatroyd +3 more
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Cumulative Sum Curves and Their Prediction Limits
The Annals of Thoracic Surgery, 2009W 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 +2 more
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Multivariate Extensions to Cumulative Sum Control Charts
Quality and Reliability Engineering International, 2004AbstractThere 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.
George C Runger
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Plotting Cumulative Sum Charts
Journal of Quality Technology, 1970(1970). Plotting Cumulative Sum Charts. Journal of Quality Technology: Vol. 2, No. 1, pp. 54-57.
Allyn K. Dusek, Donald C. Snyder
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Cumulants of random sum distributions
Communications in Statistics - Theory and Methods, 1990Consider a random variable S being the sum of a number N of independent and identically distributed random variables Xj (j = 1, 2, ...) where the number N is itself a non-negative integer-valued random variable independent of the Xj An explicit expression of the r-th cumulant of S is given in terms of the cumulants of N and Xj, Asymptotic properties of
Naota Niki +2 more
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Technometrics, 1961
This paper, presented orally to the Gordon Research Conference on Statistics in Chemistry in July 1960, traces the development of process inspection schemes from the original methods of Shewhart to the new charts using cumulative sums, and surveys the present practice in the operation of schemes based on cumulative sums.
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This paper, presented orally to the Gordon Research Conference on Statistics in Chemistry in July 1960, traces the development of process inspection schemes from the original methods of Shewhart to the new charts using cumulative sums, and surveys the present practice in the operation of schemes based on cumulative sums.
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Cumulative sum techniques for assessing surgical results
The Annals of Thoracic Surgery, 2003The 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 +2 more
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A note on cumulative sums of markovian variables
Journal of the Australian Mathematical Society, 1965Consider a positive regular Markov chain X0, X1, X2,… with s(s finite) number of states E1, E2,… E8, and a transition probability matrix P = (pij) where = , and an initial probability distribution given by the vector p0. Let {Zr} be a sequence of random variables such that and consider the sum SN = Z1+Z2+ … ZN.
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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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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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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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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 ...
openaire +1 more source