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

Displaying records 1 to 10 of 26 records.
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1. Fast Dynamic Programming for Elastic Registration of Curves
Published: 7/1/2016
Authors: Javier Bernal, Gunay Dogan, Robert Charles Hagwood
Abstract: Curve registration problems in data analysis and com- puter vision can often be reduced to the problem of match- ing two functions defined on an interval. Dynamic Pro- gramming (DP) is an effective approach to solve this prob- lem. In this paper, ...

2. Movement on Stairs During Building Evacuations
Published: 6/8/2016
Authors: Richard D Peacock, Paul A Reneke, Erica D Kuligowski, Robert Charles Hagwood
Abstract: The time that it takes an occupant population to reach safety when descending a stair during building evacuations is typically estimated by measureable engineering variables such as stair geometry, speed, stair density, and pre-observation delay. I ...

3. 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 ...

4. Reconstruction of Conditional Expectations from Product Moments with Applications
Published: 4/9/2015
Author: Robert Charles Hagwood
Abstract: Regression calibration is a method for fitting models when the independent variable X is measured with error. In regression calibration, the noisy independent measurement W for X is calibrated with E[X | W] and the model is fitted using whatever m ...

5. Movement on Stairs During Building Evacuations
Series: Technical Note (NIST TN)
Report Number: 1839
Published: 9/25/2014
Authors: Erica D Kuligowski, Richard D Peacock, Paul A Reneke, Emily A. Wiess, Jason D Averill, Robert Charles Hagwood, Enrico Ronchi, Bryan Hoskins, Michael Spearpoint
Abstract: The time that it takes an occupant population to reach safety when descending a stairwell during building evacuations is typically described by measureable engineering variables such as stairwell geometry, speed, density, and pre-evacuation delay ...

6. Testing Equality of Cell Populations Based on Shape and Geodesic Distance
Published: 12/3/2013
Authors: Robert Charles Hagwood, Javier Bernal, Michael W Halter, John T Elliott
Abstract: Image cytometry has emerged as a valuable in-vitro screening tool and advances in automated microscopy have made it possible to readily analyze large cellular populations of image data. A statistical procedure to study homogeneity of such data ...

7. 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

8. 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 ...

9. Significance Test in Operational ROC Analysis
Published: 4/5/2010
Authors: Jin Chu Wu, Alvin Frank Martin, Raghu N Kacker, Robert Charles Hagwood
Abstract: To evaluate the performance of fingerprint-image matching algorithms on large datasets, a receiver operating characteristic (ROC) curve is applied. From the operational perspective, the true accept rate (TAR) of the genuine scores at a specified fals ...

10. 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 ...

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  • SP 250-XX: Calibration Services
  • SP 260-XX: Standard Reference Materials
  • SP 300-XX: Precision Measurement and Calibration
  • SP 400-XX: Semiconductor Measurement Technology
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