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Topic Area: Modeling

Displaying records 31 to 40 of 137 records.
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31. Fourier Expansions for a Logarithmic Fundamental Solution of the Polyharmonic Equation
Topic: Modeling
Published: 9/28/2012
Author: Howard S Cohl
Abstract: In even-dimensional Euclidean space for integer powers of the Laplacian greater than or equal to the dimension divided by two, a fundamental solution for the polyharmonic equation has logarithmic behavior. We give two approaches for developing a Fou ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910119

32. A comparison of methods for Non-rigid 3D shape retrieval
Topic: Modeling
Published: 9/26/2012
Authors: Zhouhui Lian, Afzal A Godil
Abstract: Non-rigid 3D shape retrieval has become an active and important research topic in content-based 3D object retrieval. The aim of this paper is to measure and compare the performance of state-of-the-art methods for non-rigid 3D shape retrieval. The pa ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911880

33. 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

34. Variances of Cylinder Parameters Fitted to Range Data
Series: Journal of Research (NIST JRES)
Report Number: 117.015
Topic: Modeling
Published: 9/26/2012
Author: Marek Franaszek
Abstract: Industrial pipelines are frequently scanned with 3D imaging systems (e.g., LADAR) and cylinders are fitted to the collected data. Then, the fitted as-built model is compared with the as-designed model. Meaningful comparison between the two models ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910321

35. Preface
Topic: Modeling
Published: 9/2/2012
Authors: Andrew M Dienstfrey, Ronald F Boisvert
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911130

36. Modeling Methodologies and Simulation for Dynamical Systems
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7875
Topic: Modeling
Published: 8/27/2012
Authors: Ion Matei, Conrad E Bock
Abstract: Computer-interpretable representations of system structure and behavior are at the center of designing today‰s complex systems. Engineers create and review such representations using graphical modeling languages that support specification, analys ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911124

37. Transient Convection-Diffusion Modelling of Peak Temperature in Orthogonal Cutting
Topic: Modeling
Published: 8/19/2012
Authors: Timothy J Burns, Steven P Mates, Richard L. Rhorer, Eric Paul Whitenton, Debasis Basak
Abstract: Numerical finite-difference simulations of a two-dimensional transient fast convection-slow diffusion model of the temperature field in orthogonal cutting, due to Tlusty, have been shown to provide better predictions of the peak temperature during or ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910514

38. Eigenfunction expansions for a fundamental solution of Laplace's equation on R^u3^ in parabolic and elliptic cylinder coordinates
Topic: Modeling
Published: 8/14/2012
Authors: Howard S Cohl, Hans Volkmer
Abstract: A fundamental solution of Laplace's equation in three dimensions is expanded in harmonic functions that are separated in parabolic or elliptic cylinder coordinates. There are two expansions in each case which reduce to expansions of the Bessel funct ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911178

39. Feature-preserved 3D Canonical Form
Topic: Modeling
Published: 7/28/2012
Authors: Afzal A Godil, Zhouhui Lian
Abstract: Abstract Measuring the dissimilarity between non-rigid objects is a challenging problem in 3D shape retrieval. One potential solution is to construct the models‰ 3D canonical forms (i.e., isometry-invariant representations in 3D Euclidean domain) on ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911523

40. The Date-Time Vocabulary
Topic: Modeling
Published: 7/28/2012
Authors: Mark H Linehan, Edward J Barkmeyer, Stan Hendryx
Abstract: The Date-Time Vocabulary is a new OMG specification that models continuous time, discrete time, the relationship of events and situations to time, language tense and aspect, time indexicals, timetables, and schedules. It offers a "business vocabulary ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911074



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