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Topic Area: Modeling
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Displaying records 11 to 20 of 90 records.
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11. A generalized method for multiple artifacts problem in interlaboratory comparisons with linear trends
Topic: Modeling
Published: 5/22/2009
Authors: Weiping Zhang, Nien F Zhang
Abstract: A generalized statistical approach for interlaboratory comparisons with linear trends is proposed. This new approach can be applied to the general case when the artifacts are measured and reported multiple times in each participating laboratory. The ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=890065

12. AN EFFICIENT SENSITIVITY ANALYSIS METHOD FOR NETWORK SIMULATION MODELS
Topic: Modeling
Published: 12/7/2010
Authors: Kevin L Mills, James J Filliben
Abstract: Simulation models for data communications networks encompass numerous parameters that can each take on millions of values, presenting experimenters with a vast space of potential parameter combinations. To apply such simulation models experimenters f ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904961

13. An Approximation Algorithm for the Coefficients of the Reliability Polynomial
Topic: Modeling
Published: 3/15/2010
Authors: Brian Dale Cloteaux, Isabel M Beichl, F Sullivan
Abstract: The reliability polynomial gives the probability that a graph remains connected given that each edge in it can fail independently with a probability p. While in general determining the coefficients of this polynomial is #P-complete, we give a randomi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902705

14. An Efficient Sensitivity Analysis Method for Large Cloud Simulations
Topic: Modeling
Published: 7/4/2011
Author: Kevin L Mills
Abstract: We describe Koala, an infrastructure Cloud simulator inspired by the Amazon Elastic Compute Cloud (EC2). We conduct a sensitivity analysis of Koala, revealing eight behavioral dimensions, which are influenced significantly by six parameters. Our find ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907790

15. An Optimization Approach to Multiple Sequence Alignment
Topic: Modeling
Published: 7/1/2003
Authors: Fern Y Hunt, Anthony J Kearsley, H H Wan
Abstract: The problem of multiple sequence alignment is recast as an optimization problem using Markov decision theory. One seeks to minimize the expected or average cost of alignment subject to data-derived constraints. In this setting the problem is equiva ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150843

16. An evaluation of local shape descriptors for 3D shape retrieval
Topic: Modeling
Published: 9/26/2012
Authors: Afzal A Godil, Sarah Y. Tang
Abstract: As the usage of 3D models increases, so does the importance of developing accurate 3D shape retrieval algorithms. A common approach is to calculate a shape descriptor for each object, which can then be compared to determine two objects’ similarity. H ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911358

17. Approximating Limit Cycles of a Van der Pol Equation with Delay
Topic: Modeling
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

18. Approximating Periodic Solutions of Autonomous Delay Differential Equations
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7375
Topic: Modeling
Published: 11/30/2006
Author: David E. Gilsinn
Abstract: Machine tool chatter has been characterized as isolated periodic solutions or limit cycles of delay differential equations. Determining the amplitude and frequency of the limit cycle is sometimes crucial to understanding and controlling the stability ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50885

19. Artificial Intelligence Tools for Failure Event Data Management and Probability Risk Analysis for Failure Prevention
Topic: Modeling
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

20. Assessing microscale heterogeneity in batches of reference materials using microbeam XRF
Topic: Modeling
Published: 5/17/2011
Authors: John L Molloy, John R Sieber
Abstract: Principal component analysis (PCA), microbeam X-ray Fluorescence Spectrometry (µXRF), and Monte Carlo simulations are used to illustrate a methodology for assessing the sample microheterogeneity for large sets of materials. PCA is demonstrated to de ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906130