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Topic Area: Math
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Displaying records 181 to 190 of 237 records.
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181. Reconstructing the past from imprecise knowledge of the present: Some examples of non uniqueness in solving parabolic equations backward in time.
Topic: Math
Published: 5/24/2012
Author: Alfred S Carasso
Abstract: Identifying sources of ground water pollution, and deblurring astronomical galaxy images, are two important applications generating growing interest in the numerical computation of parabolic equations backward in time. However, while backward uniquen ...

182. Rectangular Distribution Whose End-points Are Not Exactly Known: Curvilinear Trapezoidal Distribution
Topic: Math
Published: 3/11/2010
Authors: Raghu N Kacker, James F Lawrence
Abstract: The state of knowledge concerning a quantity about which scant specific information is available is often represented by a rectangular probability distribution on some interval (Z1, Z2) specified by scientific judgment. Often, the end-points Z1 and ...

183. Rectangular Distribution Whose Width is Not Exactly Known: Isocurvilinear Trapezoidal Distribution
Topic: Math
Published: 6/1/2009
Authors: Raghu N Kacker, James F Lawrence
Abstract: After the Gaussian distribution, the probability distribution most commonly used in evaluating uncertainty in measurement is the rectangular distribution. When the mid-point of a rectangular distribution is fixed but the half-width is uncertain and ...

184. Reduction Formulae for Products of Theta Functions
Series: Journal of Research (NIST JRES)
Report Number: 117.017
Topic: Math
Published: 11/6/2012
Author: Peter L. Walker
Abstract: In four cases it is already known that the product of two distinct Jacobian theta functions having the same variable z and the same nome q is a multiple of a single Jacobian theta function, with the multiple independent of z. The main purpose of t ...

185. Refining the In-Parameter-Order Strategy for Constructing Covering Arrrays
Series: Journal of Research (NIST JRES)
Topic: Math
Published: 9/1/2008
Authors: Michael Forbes, James F Lawrence, Yu Lei, Raghu N Kacker, David R Kuhn
Abstract: Covering arrays are structures for well-representing extremely large input spaces and are used to efficiently implement blackbox testing for software and hardware. This paper proposes refinements over the In-Parameter-Order strategy (for arbitrary $t ...

186. Remembering Paul Garabedian
Topic: Math
Published: 6/15/2010
Author: Geoffrey B McFadden
Abstract: Paul R. Garabedian, a leader in the field of computational science, passed away on May 13th, 2010, at his home in Manhattan at the age of 82 after a long battle with cancer. During the course of sixty years of research on the faculties at Stanford an ...

187. Response to comments on Statistical analysis of CIPM key comparisons based on the ISO Guide
Topic: Math
Published: 2/15/2005
Authors: Raghu N Kacker, Raju Vsnu Datla, Albert C Parr

188. Review of Understanding and Implementing the Finite Element Method
Topic: Math
Published: 1/1/2007
Author: William F Mitchell
Abstract: This paper reviews the book "Understanding and Implementing the Finite Element Method" by Mark S. Gockenbach.

189. STOPWATCH User's Guide Version 1.0
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 5971
Topic: Math
Published: 3/1/1997
Author: William F Mitchell

190. 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 ...

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