Uncertainty factor definition

Uncertainty factor or "UF" means one (1) of several numeric factors used in operationally deriving criteria from experimental data to account for the quality or quantity of the available data.
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Uncertainty factor means a value of 1, 3, or 10 that represents uncertainty inherent in extrapolating from available toxicity data to develop a Toxicity Reference Value. A total uncertainty factor is the product of all the relevant individual uncertainty factors for a specific air toxic. Individual uncertainty factors account for:
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Uncertainty factor. (UF) means the ratio of the estimated number of pounds or kilograms of reduction by a nonpoint source to the number of pounds or kilograms of credit that will be authorized. The UF reflects the uncertainty associated with estimates of nonpoint source pollutant reductions.
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Examples of Uncertainty factor in a sentence

  • Uncertainty Factors and Modifying Factors for Estimating Exposure Limits for Chronic Effects Uncertainty orModifying Factor General CommentsStandard ValueUncertainty factor: human (intraspecies) Uncertainty factor: animal to human (interspecies) Uncertainty factor: data gaps Uncertainty factor: LOAEL to NOAELUsed to account for the variability of response in human populations.

  • Uncertainty factor values may be considered appropriate to account for uncertainties associated with extrapolating from (1) a dose producing effects in animals to a dose producing no effects, (2) subchronic to chronic exposure in animals, (3) animal toxicological data to humans (interspecies), (4) sensitivities among the members of the human population (intraspecies), and (5) deficiencies in the database for duration or key effects (Ref.

  • The BMD and BMDL are obtained through modeling of the dose-response relationship.UF = Uncertainty factor established in accordance with EPA guidelines.

  • Lu = Uncertainty factor, shall be 5 dBA unless otherwise authorized by the Town Planning Board, based on measured maximum hourly sound levels at wind turbine facilities in Maine compared to predicted sound levels and the resulted required corrections of 5 dB.Lw = Manufacturer's Guaranteed Maximum Sound Power Level, in dBA re 1pW, under any operating conditions, including high winds, yawing, furling, and power outages, whether electrically loaded or unloaded.

  • An allowable soil concentration is calculated as the geometric mean of the lowest lowest-observed- effect-level (LOEC), an observed or calculated no-observed-effect level (NOEC) and an uncertainty factor or, (LOEC ⋅ NOEC)0.5 where:ASC =UF (1)ASC Allowable soil concentration (mg Se/kg) LOEC Lowest-observed-effect-concentration (mg/kg) NOEC No-observed-effect-concentration (mg/kg)UF Uncertainty factor (unitless) With a LOEC of 0.7 mg/kg, a NOEC of 0.5 mg/kg, and a UF of 5, the ASC is 0.12 mg/kg.

  • Example -one painting be given to my dearest son,see the intention] • Integrated bargaining-expanding resources-[Example -Can there be any addition ,any FD,gold cash etc.] Contributing factors • Time factor • Money factor • Uncertainty factor Keeping in view the above factors ,mediator to discuss Pros and cons with the parties leading them to one point.

  • The Local Exchange Carriers must pass through the Uncertainty factor, when provided, to the PSAP.

  • C = Tc X R Dc WhereC is Capacity in Tonnage per dayTc is total tonnage rolled during the chosen best campaign Dc is duration of campaign in daysR is Uncertainty factor, taken as 0.8 uniformly for all mills.

  • Z1 = [1 +/- Umem/100] Z3 Uncertainty factor of the Net Energy measurement ------------------------------ Z3 = 1 +/- \ | U12 + U22 + U32 + U42 + U52 / 100 \| Where: U1 Effect of stream 1 brine flow measurement uncertainty in percent change in Correction Factor per percent measurement uncertainty U2 Effect of stream 1 brine inlet temperature measurement uncertainty in percent change in Correction Factor per measurement uncertainty (in deg.

  • X RC = Tc Dc WhereC is Capacity in Tonnage per dayTc is total tonnage rolled during the chosen best campaignDc is duration of campaign in daysR is Uncertainty factor, taken as 0.8 uniformly for all mills.


More Definitions of Uncertainty factor

Uncertainty factor. (UF) means the ratio of the estimated number of pounds or kilograms of nutrient load reduction by
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Uncertainty factor. Value used in extrapolation from a reference point (or POD), determined in experimental animals, to humans (assuming that humans may be more sensitive) or from a sub-population of individuals to the general population: for example, a value applied to the NOAEL to establish an ADI or TDI. The value depends on the size Unscheduled DNA synthesis (UDS): DNA synthesis that occurs at some stage in the cell cycle other than the S period (the normal or 'scheduled' DNA synthesis period), in response to DNA damage. It is usually associated with DNA repair. Volume of distribution: Apparent volume of fluid required to contain the total amount of a substance in the body at the same concentration as that present in the plasma, assuming equilibrium has been attained. Weight of evidence: This approach uses a combination of several independent sources of evidence (e.g. toxicological or genotoxicity data) to arrive at a conclusion regarding potential hazard (such as mutagenicity).
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Uncertainty factor or "UF" means one of several numeric factors used in
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