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Displaying records 81 to 90 of 112 records.
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81. Calibration and Uncertainty Analysis of Predictions from Computational Models
Topic: Statistics
Published: 8/18/2008
Author: Blaza Toman
Abstract: Computer experiments, that is, experiments performed using a mathematical model of a physical or chemical process implemented using a computer simulation are especially useful when extensive physical experimentation is either impossible or too expens ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=152145

82. Classical and Bayesian Interpretation of the Birge Test of Consistency and Its Generalized Version in Interlaboratory Evaluations
Topic: Statistics
Published: 4/10/2008
Authors: Raghu N Kacker, Alistair Forbes, Ruediger Kessel, K D Sommer
Abstract: The results from an interlaboratory evaluation are said to be consistent if their dispersion is not more than what can reasonably be attributed to their stated variances. A well known test of consistency in interlaboratory evaluations is the Birge te ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51220

83. Soft-Decision Metrics for Coded Orthogonal Signaling in Symmetric Alpha-Stable Noise
Topic: Statistics
Published: 1/1/2008
Authors: Michael R Souryal, E G Larsson, B M Peric, B R Vojcic
Abstract: This paper derives new soft decision metrics for coded orthogonal signaling in impulsive noise, more specifically symmetric alpha-stable noise. For the case of a known channel amplitude and known noise dispersion, exact metrics are derived both for C ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51185

84. Interlaboratory Comparisons
Topic: Statistics
Published: 12/10/2007
Author: William F Guthrie
Abstract: An interlaboratory comparison for a measurement procedure is an exercise carried out by a group of laboratories to compare their performance or assess a measurement standard. Interlaboratory comparisons are typically used for one of three main purpos ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51102

85. Assessment of measurement uncertainty via observation equations
Topic: Statistics
Published: 12/3/2007
Authors: Antonio M Possolo, Blaza Toman
Abstract: According to the Guide to the Expression of Uncertainty in Measurement, measurement uncertainty is assessed by computational propagation of error based on a measurement equation that expresses the measurand as a known function of input variables. How ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51223

86. Evolution of Modern Approaches to Express Uncertainty in Measurement
Topic: Statistics
Published: 11/27/2007
Authors: Raghu N Kacker, K D Sommer, Bernd Siebert
Abstract: The object of this paper is to discuss evolution of the concept of uncertainty in measurement and methods for its quantification from the classical error analysis to the modern approaches based on the Guide to the Expression of Uncertainty in Measure ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51120

87. Conservative Confidence Intervals Based on Weighted Means Statistics
Topic: Statistics
Published: 4/15/2007
Author: Andrew L Rukhin
Abstract: For weighted means estimators of the common mean of several normal populations associated (conservative) confidence intervals are constructed. These intervals are compared to several traditional confidence bounds. Monte Carlo simulation results of th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150388

88. Statistical Interpretation of Key Comparison Degrees of Equivalence Based on Distributions of Belief
Topic: Statistics
Published: 4/2/2007
Author: Blaza Toman
Abstract: In a Key Comparison experiment, the Mutual Recognition Arrangement (MRA) requires the calculation of the Degrees of Equivalence (DoE) and the accompanying measures of uncertainty. Unilateral DoEs have been defined as a difference between a laboratory ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50904

89. Comments on 'Bayesian evaluation of comparison data' by Ignacio Lira
Topic: Statistics
Published: 1/1/2007
Authors: Raghu N Kacker, Blaza Toman
Abstract: A recent paper by Ignacio Lira in Metrologia 43 (2006) S231-S234 addresses a well-known problem in combining information from interlaboratory evaluations. Lira presents an expression, which he claims to be the kernel of a Bayesian posterior probabili ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50952

90. Random-Effects Model for Meta-analysis of Clinical Trials: An Update
Topic: Statistics
Published: 1/1/2007
Authors: Rebecca DerSimonian, Raghu N Kacker
Abstract: The random-effects model is a useful approach for meta-analysis of clinical studies. It explicitly accounts for the heterogeneity of studies through a statistical parameter representing the inter-study variation. We discuss several iterative and non- ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51313



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