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Topic Area: Math

Displaying records 161 to 170 of 227 records.
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161. Tool Length-Dependent Stability Surfaces
Topic: Math
Published: 4/20/2004
Authors: T L Schmitz, J C Ziegert, Timothy J Burns, Brian S. Dutterer, W R Winfough
Abstract: This paper describes the development of three-dimensional stability surfaces, or maps, that combine the traditional dependence of allowable (chatter-free) chip width on spindle speed with the inherent dependence on tool overhang length, due to the co ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50703

162. Comparative Statistical Analysis of Test Parts Manufactured in Production Environments
Series: NIST Interagency/Internal Report (NISTIR)
Topic: Math
Published: 2/2/2004
Authors: David E. Gilsinn, Alice V. Ling
Abstract: Estimating error uncertainties arising in production parts isnot a well understood process. This study developed an approach to estimatethese uncertainties. Machine tool error components on a vertical turningcenter were measured. Multiple parts were ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150867

163. A Pathwise Optimality Result For A Class of Unichain Markov Decision Processes
Topic: Math
Published: 2/1/2004
Author: Fern Y Hunt
Abstract: We begin this expository essay by reviewing with examples what a typical engineer already knows about statistics. We then consider a central question in engineering decision making, i.e., given a computer simulation of high-consequence systems, how ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150017

164. Parallel Programming with Interoperable MPI
Topic: Math
Published: 2/1/2004
Authors: William L George, John G Hagedorn, J E Devaney
Abstract: In this article we describe IMPI (Interoperable Message Passing Interface), a message passing protocol that allows you to easily run parallel programs across multiple clusters, SMPs (symmetric multiprocessors), parallel machines, personal computers, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150828

165. Approximating Limit Cycles of a Van der Pol Equation with Delay
Topic: Math
Published: 1/15/2004
Author: David E. Gilsinn
Abstract: In this paper a theorem of Stokes is used to establish the existence of a periodic solution of a Van der Pol equation with fixed delay in the neighborhood of an approximating solution that satisfies a certain noncriticality condition.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50684

166. Using Nanoscillatory Splines to Model Urban Environments
Topic: Math
Published: 1/15/2004
Authors: David E. Gilsinn, Marjorie A McClain, Christoph Johann Witzgall
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150887

167. Using Nonoscillatory Splines to Model Urban Environments
Topic: Math
Published: 1/15/2004
Authors: David E. Gilsinn, Marjorie A McClain, Christoph Johann Witzgall
Abstract: In this paper we introduce the notion of Lavery splines and examine their properties in the univariate case. We also discuss some of the details involved with computing these splines on irregularly spaced data.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50417

168. Combining Information from Independent Similar Studies Using Random Effect Model
Topic: Math
Published: 1/1/2004
Author: Raghu N Kacker
Abstract: We compare leading statistical methods to combine information from independent similar studies using random effects model. One of the oldest methods is that of Cochran (1954). The method of Paule and Mandel (1982) was developed to determine the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150863

169. Constructing Sequence Alignments from a Markov Decision Model with Estimated Parameter Values
Topic: Math
Published: 1/1/2004
Authors: Fern Y Hunt, Anthony J Kearsley, Agnes (Abbie) O'Gallagher
Abstract: Current methods for aligning biological sequences are based on dynamic programming algorithms. If large numbers of sequences or a number of long ones are to be aligned the required computations are expensive in memory and CPU time. In an attempt to b ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51306

170. Constructing Sequence Alignments from a Markov Decision Model with Estimated Parameter Values
Topic: Math
Published: 1/1/2004
Authors: Fern Y Hunt, Anthony J Kearsley, Agnes (Abbie) O'Gallagher
Abstract: Current methods for aligning biological sequences are based on dynamic programming algorithms. If large numbers of sequences or a number of long ones are to be aligned the required computations are expensive in memory and CPU time. In an attempt to b ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51308



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