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Topic Area: Software

Displaying records 11 to 20 of 45 records.
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11. Bicubic B-Spline Surface Approximation of Invariant Tori
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7731
Topic: Software
Published: 10/20/2010
Authors: Sita Ramamurti, David E. Gilsinn
Abstract: The invariant torus of a coupled system of Van der Pol oscillators is approximated using bicubic B-splines. The paper considers the case of strong nonlinear coupling. In particular, the shapes of invariant torii for the Van der Pol coupling parameter ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906906

12. Predicting Microstructure Development During Casting of Drug Eluting Coatings
Topic: Software
Published: 9/19/2010
Authors: David M. Saylor, Jonathan E Guyer, Daniel Wheeler, James A Warren
Abstract: We have devised a novel diffuse interface formulation to model the development of chem- ical and physical inhomogeneities, i.e. microstructure, during the process of casting drug eluting coatings. These inhomogeneities, which depend on the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905206

13. The hp-Multigrid Method Applied to hp-Adaptive Refinement of Triangular Grids
Topic: Software
Published: 3/16/2010
Author: William F Mitchell
Abstract: Recently the hp version of the finite element method has received increasing attention. This is an adaptive finite element approach in which adaptivity occurs in both the size, h, of the elements and in the order, p, of the approximating piecewise ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902558

14. A Collection of 2D Elliptic Problems for Testing Adaptive Algorithms
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7668
Topic: Software
Published: 2/26/2010
Author: William F Mitchell
Abstract: Adaptive grid refinement is a critical component of the improvements that have recently been made in algorithms for the numerical solution of partial differential equations (PDEs). The development of new algorithms and computer codes for the solutio ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904956

15. Tensor Product B-spline Mesh Generation for Accurate Surface Visualizations in the NIST Digital Library of Mathematical Functions
Topic: Software
Published: 2/12/2010
Authors: Bonita V Saunders, Qiming Wang
Abstract: We discuss the use of tensor product B-spline meshes to design accurate three dimensional graphs of high level mathematical functions for the National Institute of Standards and Technology (NIST) Digital Library of Mathematical Functions. The graph ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901114

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

17. Spectrum Simulation in DTSA-II
Report Number: 832430
Topic: Software
Published: 10/1/2009
Author: Nicholas W m Ritchie
Abstract: Spectrum simulation is a useful practical and pedagogical tool. Particularly with complex samples or trace constituents, a simulation can help to understand the limits of the technique and how to optimize the tools for the optimal measurement. DTSA- ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832430

18. Gauging the Repeatability of 3D Imaging Systems by Sphere Fitting
Topic: Software
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

19. Modeling Microstructures with OOF2
Topic: Software
Published: 9/1/2009
Authors: Andrew C.E. Reid, Rhonald Lua, R E Garcia, Valerie R. Coffman, Stephen Langer
Abstract: OOF2 is a program for computing the properties and behavior of material microstructures, beginning with an image of the microstructural geometry. OOF2 uses finite elements, but is designed to be used by materials scientists with little or no finite e ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51176

20. Test Tool for Industrial Ethernet Network Performance
Topic: Software
Published: 6/5/2009
Authors: James D Gilsinn, Freemon Johnson
Abstract: The number of devices that implement Ethernet interfaces on the factory floor is growing at an exponential rate along with the adoption of industrial-grade Ethernet networks on the plant floor. In addition to the sheer number of devices using indust ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902598