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You searched on: Author: robert hagwood Sorted by: title

Displaying records 1 to 10 of 26 records.
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1. A Fast Algorithm for Elastic Shape Distances Between Closed Planar Curves
Published: 6/8/2015
Authors: Gunay Dogan, Javier Bernal, Robert Charles Hagwood
Abstract: Effective computational tools for shape analysis are needed in many areas of science and engineering. We address this and propose a fast algorithm to compute the geodesic distance between elastic closed curves in the plane. The original algorithm for ...

2. An Application of the Residue Calculus: The Distribution of the Sum of Non-Homogeneous Gamma Variates
Published: 2/2/2009
Author: Robert Charles Hagwood
Abstract: The probability density function for the sum of gamma variates with different shape parameters is found, using the inversion formula and the calculus of residues. This derivation seems more elegant than previous methods to derive the probability dens ...

3. Analysis of Sensitivity of VCCTL Measurements to Various Input Quantities
Published: 8/9/2006
Authors: Adriana Hornikova, Blaza Toman, Nien F Zhang, Hung-Kung Liu, Robert Charles Hagwood, Edward Joseph Garboczi, Jeffrey W Bullard
Abstract: Virtual measurements are the outputs of well-defined mathematical models based on theoretical principles and simulation algorithms. The VCCTL (Virtual Cement and Concrete Testing Laboratory) is a software system built by the Material and Construction ...

4. Combining Data in Small Multiple Method Studies
Published: 5/1/2003
Authors: Robert Charles Hagwood, William F Guthrie
Abstract: In this article an accurate confidence interval is derived when the results of a small number of different experimental methods are combined for the determination of an unknown quantity. ANOVA and a simple hierarchical Bayesian analysis of variance ...

5. Development of a Standard Reference Material for Metabolomics Research
Published: 11/4/2013
Authors: Karen W Phinney, Guillaume Ballihaut, Mary Bedner, Johanna Camara, Steven J Christopher, William C Davis, Nathan G. Dodder, Brian E Lang, Stephen E Long, Mark S Lowenthal, Elizabeth A. McGaw, Karen E Murphy, Bryant C Nelson, Jocelyn L. Prendergast, Jessica L Reiner, Catherine A Rimmer, Lane C Sander, Michele Miller Schantz, Katherine E Sharpless, Lorna Tregoning Sniegoski, Susan Shu Cheng Tai, Jeanice M Brown Thomas, Thomas W Vetter, Michael James Welch, Stephen Albert Wise, Laura J Wood, William F Guthrie, Robert Charles Hagwood, Stefan D Leigh, James H Yen, Nien F Zhang, Madhu Chaurhary-Webb, Huiping Chen, Bridgette Haynes, Donna J LaVoie, Leslie F McCoy, Shahzad S Momin, Neelima Paladugula, Elizabeth C Pendergrast, Christine M Pfeiffer, Carissa D Powers, Zia Fazili-Qari, Daniel Rabinowitz, Michael E Rybak, Rosemary L Schleicher, Mary Xu, Mindy Zhang, Arthur L Castle, Brandi S Benford, Gauthier Eppe

6. Dynamic Calibration for Instruments
Published: Date unknown
Author: Robert Charles Hagwood
Abstract: The NIST Pressure Measurements Division provides calibration service for pressure instruments that customers in turn use to calibrate other instruments. Often during their useable lifetime, these instruments are calibrated and recalibrated several ti ...

7. Dynamics of DNA Through a Nanopore
Published: Date unknown
Author: Robert Charles Hagwood
Abstract: Single stranded DNA is modeled as a flexible polymer. The motion of such DNA in a vessel partitioned by a membrane containing a cylindrical nanopore is modeled. Statistical quantities such as the probability that a polymer end is at the pore entran ...

8. Dynamics of DNA in and Around a Nanopore
Published: Date unknown
Author: Robert Charles Hagwood
Abstract: Single stranded DNA is modeled as a flexible polymer. The motion of such DNA in a vessel partitioned by a membrane containing a cylindrical nanopore is modeled. Statistical quantities such as the probability that a polymer end is at the pore entrance ...

9. Evaluation of Segmentation Algorithms on Cell Populations Using CDF Curves
Published: 2/24/2012
Authors: Robert Charles Hagwood, Javier Bernal, Michael W Halter, John T Elliott
Abstract: Cell segmentation is a critical step in the analysis pipeline for most imaging cytometry experiments and the segmentation algorithm can effect the quantitative data derived from image analysis. Methods to evaluate segmentation algorithms are importan ...

10. Evaluation of the Elevated Temperature Creep Strength of Three Lead-Free Solder Alloys in Soldered Joints
Published: 7/1/2001
Authors: D A Shepherd, Robert Charles Hagwood, Richard Joel Fields
Abstract: Amendments to the Safe Drinking Water Act mandated that soldered joints used in potable water systems be free of lead. In addition to lead contents, allowable pressures used in potable water systems are directly related to the elevated temperature c ...

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  • SP 250-XX: Calibration Services
  • SP 260-XX: Standard Reference Materials
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