CONTRIBUTED Metrology & Measurement
- Shirley Coleman (ISRU, Newcastle University)
For linear errors-in-variables regression, various methods are available to estimate the parameters, e.g. least-squares, maximum likelihood, method of moments and Bayesian methods. In addition, several approaches exist to assign probability distributions, and herewith uncertainties, to such estimators.
Following the standard approach in metrology (the Guide to the expression of uncertainty...
One of the quality characteristics characterizing the technological process is the measured degree of variation between produced objects. The probability of certain ordinal response of an object under test depends on its ability, given thresholds, characterizing the specific test item. A class of models borrowed from item response theory were recently adapted to business and industry...
The Eurachem/CITAC Guide Assessment of Qualitative Analysis is an innovative document, very useful for laboratories. False qualitative laboratory results are extremely relevant, e.g., in forensics or doping analysis and in medical examinations.
We compared EURACHEM statements with ISO 3534-2, International vocabulary of metrology (VIM), ISO Guide 99, ISO 17025, ISO...