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Topic Area: Math
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Displaying records 171 to 180 of 220 records.
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171. Separating Signal From Noise in Global Warming
Topic: Math
Published: 3/12/2003
Author: Bert W Rust
Abstract: One argument often used against global warming is that the global temperature record is too noisy to allow a clear determination of the signal. This paper presents two models for the signal which suggest that: (1) the warming is accelerating, (2) th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150874

172. A Linear Programming Based Algorithm for Multiple Sequence Alignments
Topic: Math
Published: 2/17/2003
Authors: Fern Y Hunt, Agnes (Abbie) O'Gallagher, Anthony J Kearsley
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50690

173. DIVERSE: A Framework for Building Extensible and Reconfigurable Device Independent Virtual Environments
Topic: Math
Published: 2/17/2003
Authors: John T. Kelso, L E Arsenault, Steven G Satterfield, Peter M. Ketcham, R D Kriz
Abstract: We present DIVERSE, a highly modular collection of complementary software packages designed to facilitate the creation of device independent virtual environments. DIVERSE is free/open source software; an API (Application Programming Interface) writte ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150838

174. Algorithms and Codes for the Macdonald Function: Recent Progress and Comparisons
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6596
Topic: Math
Published: 2/1/2003
Authors: B R Fabijonas, Daniel W Lozier, J M Rappoport
Abstract: The modified Bessel function K^di{nu}^{chi}, also known as the Macdonald function, finds application in the Kontorovich-Lebedev integral transform when {chi} and {nu} are real and positive. In this paper, a comparison of three codes for computing th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50682

175. Dealing with Degeneracy in Triangulation
Topic: Math
Published: 11/1/2002
Authors: Francis Sullivan, Isabel M Beichl
Abstract: This is a tutorial article on a quick method for dealing with degeneracy in geometric computations with specific reference to triangulation. The type degeneracy targeted by this article that of four or more points on a circle and five or more points ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150673

176. Lattice Matching (LM)-Prevention of Inadvertent Duplicate Publications of Crystal Structures
Series: Journal of Research (NIST JRES)
Topic: Math
Published: 10/1/2002
Author: Alan D. Mighell
Abstract: Lattice-matching techniques have proved to be an extremely effective for the identification of unknown crystalline materials. A commonly employed lattice-matching strategy is based on matching the reduced cell of an unknown against a database of know ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850672

177. Reconstructing Images of Bar Codes for Construction Site Object Recognition
Topic: Math
Published: 9/1/2002
Authors: David E. Gilsinn, Geraldine S Cheok, Dianne M O'Leary
Abstract: This paper discusses a general approach to reconstructing ground truth intensity images of bar codes that have been distorted by LADARoptics. The first part of this paper describes the experimental data collection of several bar code images along w ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150859

178. Conventional Cells--The Last Step Toward General Acceptance of Standard Conventional Cells for the Reporting of Crystallographic Data
Series: Journal of Research (NIST JRES)
Topic: Math
Published: 8/1/2002
Author: Alan D. Mighell
Abstract: The Absolute Integrating Sphere Method is now used at NIST for the detector-based calibration of total luminous flux of lamps, as well as for the realization of the lumen. This method has many benefits for high-accuracy applications, allowing for me ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850625

179. Comparative Statistical Analysis of Test Parts Manufactured in Production Environments
Report Number: 6868
Topic: Math
Published: 6/1/2002
Authors: David E. Gilsinn, Alice V. Ling
Abstract: Estimating error uncertainties arising in parts produced on machine tools in production machine shops is not a well understood process. The current study details a process of estimating these error uncertainties. A part with significant features was ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150852

180. Shape-Preserving, Multi-Scale Fitting of Bivariate Data by Cubic L^d1^ Smoothing Splines
Topic: Math
Published: 5/10/2002
Authors: David E. Gilsinn, J E Lavery
Abstract: Bivariate cubic L1 smoothing splines are introduced. The coefficients of a cubic L1 smoothing spline are calculated by minimizing the weighted sum of the L1 norms ofsecond derivatives of the spline and the l1 norm of the residuals of the data-fitting ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150830



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