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Author: hariharan iyer
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1. Pivotal Methods in the Propagation of Distributions
Published: 4/24/2012
Authors: Chih-Ming Wang, Jan Hannig, Hariharan K. (Hariharan K.) Iyer
Abstract: We propose a method for assigning a probability distribution to an input quantity. The distribution is used in the Monte Carlo method for uncertainty evaluation. The proposed method provides an alternative to other methods, such as the principle of m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909867

2. Fiducial Prediction Intervals
Published: 2/18/2012
Authors: Chih-Ming Wang, Jan Hannig, Hariharan K. (Hariharan K.) Iyer
Abstract: This paper presents an approach for constructing prediction intervals for any given distribution. The approach is based on the principle of fiducial inference. We use several examples, including the normal, binomial, gamma, and Weibull distributions, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905933

3. On Non-Linear Estimation of a Measurand
Published: 11/7/2011
Authors: Chih-Ming Wang, Hariharan K. (Hariharan K.) Iyer
Abstract: We consider an estimation problem described in the Guide to the Expression of Uncertainty in Measurement (GUM). The problem is concerned with estimating a measurand that is a non-linear function of input quantities. The GUM describes two methods for ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908820

4. On Multiple-Method Studies
Published: 10/4/2010
Authors: Chih-Ming Wang, Hariharan K. (Hariharan K.) Iyer
Abstract: In this paper we review statistical models that describe measurements from a multiple-method study such as in the development of a reference material. We also review requirements for the so-called GUM compliance as this appears to be an important cri ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905972

5. On interchangeability of two laboratories
Published: 6/18/2010
Authors: Chih-Ming Wang, Hariharan K. (Hariharan K.) Iyer
Abstract: This paper proposes a measure for assessing the degree of equivalence between the two laboratories in a key comparison. The measure is called asymmetric degree of interchangeability. It is asymmetric since, based on this measure, a laboratory may be ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904849

6. Fiducial Intervals for the Magnitude of a Complex-Valued Quantity
Published: 12/19/2008
Authors: Chih-Ming Wang, Hariharan K. (Hariharan K.) Iyer
Abstract: This paper discusses a fiducial approach for constructing uncertainty intervals for the distance between k normal means and the origin. When k=2 this distance is equivalent to the magnitude of a complex-valued quantity. Uncertainty intervals for the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=890046

7. Fiducial approach for assessing agreement between two instruments
Published: 7/9/2008
Authors: Chih-Ming Wang, Hariharan K. (Hariharan K.) Iyer
Abstract: This paper presents an approach for making inferences about the intercept and the slope of a linear regression model with both variables subject to measurement errors. The approach is based on the principle of fiducial inference. A procedure is prese ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150665

8. NIST Recommended Practice Guide: Computing Uncertainty for Charpy Impact Machine Test Results
Series: Special Publication (NIST SP)
Published: 9/1/2007
Authors: Jolene D Splett, Christopher N McCowan, Hariharan K. (Hariharan K.) Iyer, Chih-Ming Wang
Abstract: The purpose of this recommended practice guide is to demonstrate how to determine the uncertainty associated with mean absorbed energy of specimens tested on a Charpy impact machine. We assume that the Charpy machine has successfully met the requirem ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150515

9. Fiducial Approach to Uncertainty Assessment Accounting for Error due to Instrument Resolution
Published: 1/1/2007
Authors: Jan Hannig, Hariharan K. (Hariharan K.) Iyer, Chih-Ming Wang
Abstract: This paper presents an approach for making inference on the mean and variance of a Gaussian distribution in the presence of resolution errors. The approach is based on the principle of fiducial inference and requires a Monte Carlo method for computin ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150557

10. A Generalized Confidence Interval for a Measurand in the Presence of type-A and type-B Uncertainties
Published: 4/11/2006
Authors: Chih-Ming Wang, Hariharan K. (Hariharan K.) Iyer
Abstract: We consider the problem of estimating a measurand based on a sequence of measurements. Each measurement has both type-A and type-B errors. The measurements may have been obtained from a single experiment or several separate experiments. We investigat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150260



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