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Navigation signal integrity is paramount for aviation and safety of life services. Hitherto GPS signal anomaly alerting has been provided primarily by ground...
We evaluate a dual-frequency, multi-channel GPS receiver for time and frequency transfer applications. The receiver is able to lock its internal clock to an...
Jinan Zeng, Leonard M. Hanssen, Ibrahim Reda, Jonathan Scheuch
We report the preliminary characterization results of a gold-coated concentrator used for longwave irradiance measurements[1]. Throughput measurements of the...
Michael Grasso, Ronil Mokashi , Alden A. Dima, Antonio Cardone, Kiran Bhadriraju, Anne L. Plant, Mary C. Brady, Yaacov Yesha, Yelena Yesha
The traditional method of cell microscopy can be subjective, due to observer variability, a lack of standardization, and a limited feature set. To address this...
In 2008, the European Union (EU) started a major review of its new class of environmental regulations with a broad review of the Restriction of Hazardous...
We have demonstrated an ultra low noise up-conversion single photon detector using a periodically poled lithium niobate waveguide. The dark count rate of this...
A new kind of physical gels was prepared using the mixtures of poly(vinyl alcohol) (PVOH) and high melting ionic liquid (IL), 1-ethylpyridinium bromide. As the...
The use of cementitious materials has been proposed in a variety of waste management systems because these materials can have a variety of desirable performance...
This paper describe the importance of temperature sensor built-in self test (BIST) for microhotplate based sensors. It shows possible ways to implement BIST...
Nuclear magnetic resonance gyroscopes(NMRGs)detect rotation as shift in the Larmor precession frequency of nuclear spins. A review of the open literature on...
David W. Griffith, Michael R. Souryal, Camillo A. Gentile, Nada T. Golmie
This paper introduces an IEEE 802.11 analytical model that examines uplink and downlink communications between non-saturated stations and a non-saturated access...
Douglas T. Smith, Stuart T. Smith, Bartosz K. Nowakowski
This paper presents a discussion of the design features of a precision indentation platform for measuring indents with traceable uncertainties at the nanometer...
Nathan R. Newbury, Ian R. Coddington, Esther Baumann, Fabrizio R. Giorgetta, William C. Swann, Alexander M. Zolot
Optical frequency combs have been used extensively, and with remarkable success, to measure the absolute frequency of cw lasers. The use of frequency combs has...
Fire resistive materials (FRMs) serve a critical function in insulating (steel) structures to limit steel temperature rise during a fire exposure. This paper...
Carl G. Simon Jr., Sapun Parekh, Marcus T. Cicerone, Sheng Lin-Gibson, Kaushik Chatterjee, Marian F. Young
There is growing recognition cells can sense and respond to the mechanical properties of tissue scaffolds and that these interactions are critical in optimizing...
For transistor research and development, one of the important figures of merit is the carrier mobility. The measurement of mobility is cumbersome in large...
Ronnie R. Fesperman Jr., Shawn P. Moylan, M A. Donmez
This paper presents work being performed by NIST to evaluate test methods prescribed by the new draft standard for determination of on-machine measuring...
Technological evolutions are constantly occurring across advanced and intelligent systems within a range of fields including those within the military, law...
Felipe Hernandez-Marquez, Randolph Elmquist, Benjamin Rodriguez
The development of measurement systems of electrical resistance based on the principle of current comparison in the late 1960s [1] has provided some of the best...
A new analysis of the laboratory spectrum of Fe II is described. The aim is to produce a comprehensive list of Fe II lines, based on high-resolution grating and...
Wolfgang L. Wiese, Jeffrey R. Fuhr, John M. Bridges
Accurate determinations of atomic oscillator strengths have been a problem for a long time, and discrepancies between various numerical results have been...
New observations of the spectrum of Pt/Cr-Ne hollow cathode lamps have been made to provide accurate wavelengths for more than 5000 chromium lines for...
We present recent work at NIST to develop and maintain databases for spectra, transition probabilities, and energy levels of atoms that are astrophysically...
William P. Shackleford, Tsai Hong Hong, Tommy Chang
This paper will describe a flexible and inexpensive method of obtaining ground truth for the evaluation of Human Tracking systems. It is expected to be...
Michael A. Lombardi, J. Mauricio Lopez-Romero, Nelida Diaz-Munoz
This paper presents an analysis of the performance of some of the time scales generated in the Sistema Interamericano de Metrologia (SIM) region. We emphasize...
Julien M. Amelot, Clement Vasseur, Jeffrey Fletcher, Dhananjay Anand, Ya-Shian Li-Baboud, James Moyne
Wide-area monitoring applications for power distribution rely on accurate global time synchronization. Furthermore, there is interest in replacing current time...
Shuowen Hu, Robert Maschal, S. S. Young, Tsai H. Hong, P. Jonathon Phillips
Recognition rate of face recognition algorithms is dependent on the resolution of the imagery, specifically the number of pixels contained within the face...
The BFRL International Standards Workshop was held on June 29 and 30, 2009 to identify opportunities for standards development organizations and U.S. industry...