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Topic Area: Software

Displaying records 31 to 40 of 66 records.
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31. Salient Local 3D Features for 3D Shape Retrieval
Topic: Software
Published: 4/7/2011
Authors: Afzal A Godil, Asim Wagan
Abstract: In this paper we describe a new formulation for the 3D salient local features based on the voxel grid inspired by the Scale Invariant Feature Transform (SIFT). We use it to identify the salient keypoints (invariant points) on a 3D voxelized model and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907645

32. A Survey of hp-Adaptive Strategies for Elliptic Partial Differential Equations
Topic: Software
Published: 1/3/2011
Authors: William F Mitchell, Marjorie A McClain
Abstract: The hp version of the finite element method (hp-FEM) combined with adaptive mesh refinement is a particularly efficient method for solving partial differential equations because it can achieve a convergence rate that is exponential in the number of d ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903240

33. Changes
Topic: Software
Published: 1/3/2011
Author: Isabel M Beichl
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907604

34. 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

35. 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

36. 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

37. 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

38. 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

39. 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

40. 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



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