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The following HTML text is provided to enhance online readability. Many aspects of typography translate only awkwardly to HTML. Please use the page image as the authoritative form to ensure accuracy. Sievert (abbreviated SV). A unit of dose equivalent to the dose in Gray times a quality factor times any other factors that may modify the dose. The name is derived from the Swedish physicist Rolf M. Sievert. SIR. Standardized incidence rate is the incidence (new cases in a time interval) rate adjusted to a population of standardized age distribution. It is usually equal to the ratio of the number of observed cases to the number of expected cases. SMR.. Standardized mortality rate is the mortality (death) rate adjusted to a population of a standardized age distribution. It is usually equal to the ratio of the number of observed deaths to the number of expected deaths. Sv. See Sievert. UUncertainty analysis. Models are merely approximations of real systems, and as such their predictions are inherently uncertain. Uncertainty analysis seeks to quantify the error inherent in each step in the modeling process and to propagate these errors through the entire process in order to estimate the overall possible error (or uncertainty).
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