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Topic Area: Statistics

Displaying records 61 to 70 of 108 records.
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61. Linking the Results of CIPM and RMO Key Comparisons with Linear Trends
Series: Journal of Research (NIST JRES)
Topic: Statistics
Published: 6/30/2010
Author: Nien F Zhang
Abstract: A statistical approach to link the results of interlaboratory comparisons with linear trends is proposed. This approach can be applied to the case that the comparisons have the same nominal values or of a same magnitude. The degrees of equivalence be ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902845

62. Performance Measurements for Evaluating Static and Dynamic Multiple Human Detection and Tracking Systems in Unstructured Environments
Topic: Statistics
Published: 6/30/2010
Authors: Bodt Bodt, Richard Camden, Harry A. Scott, Adam S Jacoff, Tsai Hong Hong, Tommy Chang, Richard J Norcross, Anthony J Downs, Ann M Virts
Abstract: The Army Research Laboratory (ARL) Robotics Collaborative Technology Alliance (CTA) conducted an assessment and evaluation of multiple algorithms for real-time detection of pedestrians in Laser Detection and Ranging (LADAR) and video sensor data take ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904192

63. Copulas for Uncertainty Analysis
Topic: Statistics
Published: 4/20/2010
Author: Antonio M Possolo
Abstract: Applying the Monte Carlo method for propagation of measurement uncertainty described in the GUM Supplement 1, when the input quantities are correlated, involves the specification of a joint probability distribution for these quantities. In practice, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904787

64. Final report of key comparison CCM.P-K3 absolute pressure measurements in gas from 3E-6 Pa to 9E-4 Pa
Topic: Statistics
Published: 3/31/2010
Authors: Douglas A Olson, Patrick J Abbott, Karl Jousten, Fiona J Redgrave, Pardeep Mohan, S S Hong
Abstract: This report describes a CCM key comparison of absolute pressure at five National Metrology Institutes (NMIs) that was carried out from August 1998 to May 2002. The goal of the key comparison was to determine the degree of equivalence at pressures in ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904758

65. Sequential Testing to Guarantee The Necessary Sample Size in Clinical Trials
Topic: Statistics
Published: 1/1/2010
Author: Andrew L Rukhin
Abstract: The paper addresses the sequential sampling issues related to attainment of a given number of events in a Poisson process. The problem of guaranteeing the necessary sample size is formulated as that of open-ended hypothesis testing in which one has ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901446

66. Conservative Confidence Ellipsoids for Linear Model Parameters
Topic: Statistics
Published: 12/1/2009
Author: Andrew L Rukhin
Abstract: This paper studies properties of conservative confidence ellipsoids for parameters of a general linear model. These regions are obtained on the basis of a linear estimator when only a vague knowledge of (heterogeneous) error variances is available ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902054

67. Chapter - Batch effects and experimental noise in Microarray Analysis: sources and solutions. Microarray Gene Expressions: The Effects of Varying Certain Measurement Conditions.
Topic: Statistics
Published: 11/2/2009
Author: Walter S Liggett Jr
Abstract: This chapter explores measurements from an experiment with a batch effect induced by switching the mass of RNA analyzed from 400 ng to 200 ng. The experiment has as additional factors the RNA material (liver, kidney, and two mixtures) and the RNA so ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902709

68. Artificial Intelligence Tools for Failure Event Data Management and Probability Risk Analysis for Failure Prevention
Topic: Statistics
Published: 10/25/2009
Authors: Jeffrey T Fong, Pedro Vincente Marcal
Abstract: Over the last thirty years, much research has been done on the development of failure event databases and fatigue modeling of crack growth in pressure vessels and piping. According to a USNRC report (NUREG/CR6674, 2000), results of a fatigue crack g ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903592

69. Innovations in Maximum Likelihood Quantum State Tomography
Topic: Statistics
Published: 10/9/2009
Authors: Scott C Glancy, Emanuel H Knill, Thomas Gerrits, Tracy S. Clement, Brice R. Calkins, Adriana Eleni Lita, Aaron J Miller, Alan L Migdall, Sae Woo Nam, Richard P Mirin
Abstract: At NIST we are engaged in an experiment whose goal is to create superpositions of optical coherent states (such superpositions are sometimes called "Schroedinger cat" states). We use homodyne detection to measure the light, and we apply ma ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904007

70. Gauging the Repeatability of 3D Imaging Systems by Sphere Fitting
Topic: Statistics
Published: 9/30/2009
Authors: Marek Franaszek, Geraldine S Cheok, Kamel Shawki Saidi
Abstract: Multiple scans of the same object acquired with 3D imaging system (e.g., laser scanner) in the same experimental conditions could provide valuable information about the instrument s performance (e.g., stability, existence of bias, measurement error). ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903444



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