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Author: chih-ming wang

Displaying records 31 to 40 of 68 records.
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31. Propagation of Uncertainties in Measurements Using Structural Inference
Published: 3/21/2005
Authors: Hariharan K Iyer, Chih-Ming Wang
Abstract: The ISO Guide to the Expression of Uncertainty in Measurement (GUM) recommends the use of a first-order Taylor series expansion for propagating errors and uncertainties. The GUM also permits the use of other analytical or numerical methods when the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150568

32. Detection of influential observation in the determination of the weighted-mean KCRV
Published: 1/1/2005
Authors: Chih-Ming Wang, Hariharan K Iyer
Abstract: Since the signing of the Mutual Recognition Arrangement, National Metrology Institutes (NMI) have carried out many key comparisons in a wide range of metrological areas to establish the equivalence of their measurement standards. The determination of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=130043

33. On Higher Order Corrections for Propagating Uncertainties
Published: 1/1/2005
Authors: Chih-Ming Wang, Hariharan K Iyer
Abstract: The ISO Guide to the Expression of Uncertainty in Measurement (GUM) recommends the use of a first-order Taylor series expansion for propagating errors and uncertainties. The GUM also suggests the use of a second-order Taylor series approximation for ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150107

34. Propagation of uncertainties in measurements using generalized influence
Published: 1/1/2005
Authors: Hariharan K Iyer, Chih-Ming Wang
Abstract: The ISO Guide to the Expression of Uncertainty in Measurement (GUM) recommends the use of a first- order Taylor series expansion for propagating errors and uncertainties. The GUM also permits the use of "other analytical or numerical methods" when th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=130035

35. Models and Confidence Intervals for True Values in Interlaboratory Trials
Published: 12/6/2004
Authors: Hariharan K Iyer, Chih-Ming Wang, T Mathew
Abstract: We consider the one-way random effects model with unequal sample sizes and heterogeneous variances. Using the method of generalized confidence intervals, we develop a new confidence interval procedure for the mean. Additionally, we investigate two ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51088

36. Consistency Tests for Key Comparison Data
Published: 5/1/2004
Authors: Dominic F. (Dominic F.) Vecchia, Chih-Ming Wang
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150569

37. An Optimal Vector-Network-Analyzer Calibration Algorithm
Published: 12/1/2003
Authors: Dylan F Williams, Chih-Ming Wang, Uwe Arz
Abstract: We present an iterative algorithm for calibrating vector network analyzers based on orthogonal distance regression. The algorithm features a robust, yet efficient, search algorithm, a complete error analysis that includes both random and systematic e ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=31321

38. Adaptive Characterization of Jitter Noise in Sampled High-Speed Signals
Published: 10/1/2003
Authors: Kevin J Coakley, Chih-Ming Wang, Paul D Hale, Tracy S. Clement
Abstract: We estimate the root-mean-square (RMS) value of timing jitter noise in simulated signals similar to measured high-speed sampled signals. The simulated signals are contaminated by additive noise, timing jitter noise, and time shift errors. Before e ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51084

39. The NIST Traceable Reference Material Program for Wavelength Reference Absorption Cells
Series: Special Publication (NIST SP)
Published: 8/1/2003
Authors: Timothy J Drapela, Sarah L. Gilbert, William C Swann, Chih-Ming Wang
Abstract: A program is described by which commercially produced wavelength-calibration gas-absorption cells may be related to primary standards maintained by the National Institute of Standards and Technology (NIST) and Standard Reference Materials produced by ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=30769

40. A Statistical Model for Cladding Diameter of Optical Fibers
Published: 4/1/2003
Authors: Chih-Ming Wang, Timothy J Drapela
Abstract: The National Institute of Standards and Technology has developed a contact micrometer for accurate measurement of optical-fiber outer diameter. The contact micrometer is used to measure reference fibers which are artifacts used by the telecommunicat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=151779



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