Monitoring statistics which have increased power over a reduced time range.
The problem of monitoring trends for changes at unknown times is considered. Statistics which permit one to focus high power on a segment of the monitored period are studied. Numerical procedures are developed to compute the null distribution of these statistics.
Project Management Unit, Water Resource Branch, Ministry of the Environment, 1 St. Clair West, M4V 1K6, Toronto, Canada.
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Tang
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Macneill