Journal ArticleDOI
The evaluation of key comparison data.
TLDR
Guidelines containing two procedures are proposed for the evaluation of key comparison data, based on the use of the weighted mean and consistency checks based on classical statistics regarding its applicability, to the simple circulation of a single travelling standard around all the participants.Abstract:
Guidelines containing two procedures are proposed for the evaluation of key comparison data. They apply to the simple circulation of a single travelling standard around all the participants. The application of the procedures to a specific set of key comparison data provides a key comparison reference value (KCRV) and the associated uncertainty, the degree of equivalence of the measurement made by each participating national institute and the degrees of equivalence between measurements made by all pairs of participating institutes. Procedure A is based on the use of the weighted mean, together with consistency checks based on classical statistics regarding its applicability. Should the checks fail, action to remedy the situation is suggested. If the remedy is inappropriate, Procedure B can be applied instead. It is based on the use of the median (or any another informed choice) as a more robust estimator in the circumstances.read more
Citations
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Ministry of Education and Science of the Russian Federation
TL;DR: The abstract should follow the structure of the article (relevance, degree of exploration of the problem, the goal, the main results, conclusion) and characterize the theoretical and practical significance of the study results.
Journal ArticleDOI
New International Formulation for the Viscosity of H2O
Marcia L. Huber,Richard A. Perkins,Arno Laesecke,Daniel G. Friend,Jan V. Sengers,Marc J. Assael,Ifigenia N. Metaxa,Eckhard Vogel,Radim Mareš,K. Miyagawa +9 more
TL;DR: The International Association for the Properties of Water and Steam (IAPWS) encouraged an extensive research effort to update the IAPS Formulation 1985 for the Viscosity of Ordinary Water Substance, leading to the adoption of a Release on the IAPWS Formulation 2008 for the viscosity of ordinary water substance as mentioned in this paper.
Journal ArticleDOI
New International Formulation for the Thermal Conductivity of H2O
Marcia L. Huber,Richard A. Perkins,Daniel G. Friend,Jan V. Sengers,Marc J. Assael,Ifigenia N. Metaxa,K. Miyagawa,Robert Hellmann,Eckhard Vogel +8 more
TL;DR: The International Association for the Properties of Water and Steam (IAPWS) encouraged an extensive research effort to update the IAPS Formulation 1985 for the thermal conductivity of Ordinary Water Substance, leading to the adoption of a Release on the IAPWS Formulation 2011 for the Thermal Conductivity of OWC.
Journal ArticleDOI
The evaluation of key comparison data: determining the largest consistent subset
TL;DR: An efficient approach for determining the LCS having smallest chi-squared value is described, and applied to length, temperature and ionizing radiation comparisons.
Journal ArticleDOI
Present Estimates of the Differences Between Thermodynamic Temperatures and the ITS-90
Johann Fischer,M de Podesta,Kenneth D. Hill,Michael R. Moldover,Laurent Pitre,R. L. Rusby,Peter P. M. Steur,Osamu Tamura,Roscoe White,L. Wolber +9 more
TL;DR: In this article, the authors provide consensus estimates of T − Tⓘ 90 for selected measurements from 0.65 K to 1358 K. They also identify temperature ranges where researchers are encouraged to undertake high-accuracy measurements of T−Tⓘ 90.
References
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Journal ArticleDOI
Removing model and data non-conformity in measurement evaluation
TL;DR: In this paper, a procedure is derived to remove after adjustment a frequently observed non-conformity of the evaluation model and the given information, based on the Bayesian theory of measurement uncertainty.