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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...
The performance of a biometric system depends on the quality of interaction of the biometric subject and the system. Past research has shown that fingerprint...
Stephen L. Redman, Florian Kerber, Gillian Nave, Suvrath Mahadevan, Lawrence W. Ramsey, Jonathan Smoker, H-U Kaufl, Pedro Figueira
We present work done to prepare two new near-infrared calibration sources for use on high-precision astrophysical spectrographs. Uranium-neon is an atomic...
Scott A. Diddams, Suvrath Mahadevan, Lawrence W. Ramsey, Chad F. Bender, Ryan Terrien, Jason T. Wright, Samuel Halverson, Fred Hearty, Matthew Nelson, Adam Burton, Stephen L. Redman, Steve Osterman, James Kasting, Michael Endl
We present the scientific motivation and conceptual design for the recently funded Habitable-zone Planet Finder (HPF), a stabilized fiber-fed near-infrared (NIR...
Inhomogeneity of the propagation medium in body area networks could have a great impact on the sensor node's antenna characteristics. This in turn could affect...
A fully automated system for light-emitting diode (LED) lifetime test has been developed and is undergoing validation. This system uses a 1 m integrating sphere...
Ballistic limit tests are widely used to assess armor performance, particularly to determine the velocity at which half of all projectile impacts will perforate...
Erica D. Kuligowski, Bryan Hoskins, Richard D. Peacock, Emily A. Wiess
The time that it takes a population to reach safety when descending a stairwell during building evacuations is typically described by measureable engineering...
This paper presents a portion of the authors PhD dissertation involving a qualitative study of occupant behavior in response to the 2001 World Trade Center...
Steve M. Gwynne, Erica D. Kuligowski, Michael Spearpoint
In this paper, the use of default values in egress models is explored and specific values are proposed to combat issues of model misuse. The authors suggest...
Michael A. Lombardi, Mitch Narins, Per Engen, Ben Peterson, Sherman Lo, Dennis Akos
Positioning, Navigation, and Timing (PNT) services are key enablers of both essential safety and security applications and economically beneficial capacity and...
Reverberation chambers (RC) are becoming a popular alternative testing facility for a wide range of electromagnetic applications. Because of the statistical...
Claire E. Cramer, Keith R. Lykke, John T. Woodward IV, Peter Zimmer, John T. McGraw, Daniel C. Zirzow
Changing atmospheric transmission accounts for the largest systematic errors limiting photometric measurement precision and accuracy for ground-based telescopes...
This paper presents the results from a parametric simulation study that was conducted to optimize the design of a high-current 4.5 kV half-bridge Si-IGBT/SiC...
Keith R. Lykke, Claire E. Cramer, John T. Woodward IV, Steven W. Brown, Ping-Shine Shaw
Improving the precision of optical astronomy requires not only new telescopes and instrumentation, but also advances in observing protocols, calibrations and...
Traceability of interferometric form measurements requires characterization of the reference wavefront. We investigate absolute tests for spherical surfaces...
This report describes some measures of combinatorial coverage that can be helpful in estimating this risk that we have applied to tests for spacecraft software...
We describe a method for measuring the deflection due to gravity (sag) of horizontally mounted reference flats of phase shifting interferometers. The planarity...
John T. Woodward IV, Keith R. Lykke, Claire E. Cramer, John T. McGraw, Peter Zimmer, Daniel C. Zirzow, Susana Deustua, Dean Hines
NIST-calibrated detectors will be used by the ground-based 100mm diameter Astronomical Extinction Spectrophotometer (AESoP) to calibrate the spectral energy...
P J. Phillips, Jingjing Zheng, Zhuolin Jiang, Rama Chellappa
Discriminative appearance features are effective for recognizing actions in a fixed view, but generalize poorly to changes in viewpoint. We present a method for...
Over the past two decades, the Sensor Science Division at the National Institute of Standards and Technology (NIST) has developed extensive capabilities for the...
Robert L. Amaro, Elizabeth S. Drexler, Neha N. Rustagi, Nicholas Nanninga, Yaakov Levy, Andrew J. Slifka
A phenomenological fatigue crack growth (FCG) model has been proposed to predict the FCG of API-5L X100 steel in high-pressure gaseous hydrogen [1]. The model...
Andrew J. Slifka, Elizabeth S. Drexler, Neha N. Rustagi, Damian S. Lauria, Joseph D. McColskey, Robert L. Amaro
Fatigue crack growth tests were conducted on two API 5L X52 pipeline steel alloys. One alloy was from a new linepipe that was installed for hydrogen service in...
High-precision spheres have many applications in precision engineering and metrology, such as the calibration of transmission spheres for interferometry...
The diameter variation and refractive index inhomogeneity of a fused silica sphere were measured with a frequency-shifting Fizeau interferometer in a four...
Many of todays extremely complex meta-systems are cross-domain, they require development by multiple stakeholder groups with different goals each implementing...
graphics system that is integrated seamlessly with web browsers. Users can select anthropometric landmarks and learn their names, view the body from many points...
TO HAVE CONFIDENCE IN THE KNOWLEDGE GLEANED FROM DATA, IT IS ESSENTIAL TO VERIFY THE QUALITY OF THE DATA SOURCES AND TO HAVE A MEANS OF QUANTIFYING THE...