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This is the preliminary program for the 2009 Joint Statistical Meetings in Washington, DC.

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Activity Number: 382
Type: Contributed
Date/Time: Tuesday, August 4, 2009 : 2:00 PM to 3:50 PM
Sponsor: Section on Risk Analysis
Abstract - #303993
Title: Shelf Life Assessment Based on Threshold Parameter Estimation
Author(s): Michael E. Tarter*+ and Guangwei Huang
Companies: University of California, Berkeley and Technical and Scientific Affairs Almond Board of California
Address: School of Public Health, Berkeley, CA, 94720,
Keywords: heteroscedasticity ; homoscedasticity ; lognormal ; transformation ; R(y | x) curve ; linearity
Abstract:

For m > 2, suppose a specified unacceptable-spoilage (or other risk-marker) level is known to have been reached between two consecutive members of a sequence of m dates. Given prior knowledge about the relationship between the spoilage or other risk-marker's standard deviation, on the one hand, and this same marker's mean, on the other, how can the exact time the unacceptable level is reached be approximated? To answer this question packaged almond shelf-life-interpolation procedures called upon risk analysis methodology previously used to study epidemiological issues such as the assessment of radiological site contamination.


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