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A popular scheme for achieving low phase noise across a large range of offset frequencies is to employ an oscillator at an output frequency with low far-from
Paul D. Kunz, Thomas P. Heavner, Steven R. Jefferts
We are developing a transportable laser-cooled rubidium (Rb) atomic fountain frequency standard. We have a complete optical package, and have recently shown
The stability of differential delays between Global Navigation Satellite receivers is critical for time and frequency transfer. We study the limit of this
Jennifer A. Taylor, Franklyn J. Quinlan, Scott A. Diddams
Very low-noise microwave signals are desirable for many state-of-the-art applications, including many types of radar and imaging systems. However, even state-of
Polarimetric radar cross section systems are characterized by polarimetric system parameters $\epsilon_h$ and $\epsilon_v$. These parameters can be obtained
Imad Hamchi, Mathieu Hoarau, Antoine Fillinger, Nicolas Crouzier, Lukas Diduch, Martial Michel, Vincent M. Stanford
Biological ants organize themselves into forager groups that converge to shortest paths to and from food sources. This has motivated development a large class
Elena Andreeva, Charles Bouillaguet , Orr Dunkelman, John M. Kelsey
In this paper we present new attack techniques to analyze the structure of hash functions that are not based on the classical Merkle-Damgaard construction. We
Gerald T. Fraser, Steven W. Brown, Keith R. Lykke, John T. McGraw, Allan W. Smith, John T. Woodward IV, Peter C. Zimmer, Christopher W. Stubbs
The feasibility of developing a network of telescopes to monitor the composition of the nighttime atmosphere using stellar spectrophotometry is explored
Balasubramanian Muralikrishnan, Jack A. Stone Jr., John R. Stoup
We discuss the measurement of diameter and form of micro-holes with reverse tapers in a fuel injector nozzle using an ultra-low force contact fiber probe on a
Jeffrey R. Guerrieri, David R. Novotny, Daniel G. Kuester
Transmitting equipment may interfere with sensitive electronic equipment even if both are in compliance with regulatory standards. This paper examines the
Because of the complexity in determining the 3D structure of a protein, the use of partial information determined from experimental techniques can greatly
Building energy efficiency has become a top priority due to the recent energy price spikes and increasing concern regarding climate change. New buildings are
Extreme Ultraviolet Lithography (EUVL) incorporates 13.5 nm light for patterning wafers and requires in-situ wafer-plane dosimetry that can be tailored to the
Donald A. Windover, David L. Gil, Albert Henins, James P. Cline
NIST recently released a standard reference material (SRM) for the calibration of high resolution X-ray diffraction (HRXRD) instruments. HRXRD is extensively
In this paper, we describe the process by which we collected sensor data for the evaluation of 3D LIDAR (Light Detection and Ranging). Data was also collected
Stephanie S. Watson, Tarek Marray, Yongyan Pang, Li Piin Sung
Metal oxide fillers, such as titanium dioxide (TiO2) are commonly used in building and construction applications and are added to increase the opacity and/or to
John E. Kitching, Svenja A. Knappe, William C. Griffith, Jan Preusser, V Gerginov, Peter D. Schwindt, Vishal Shah, Ricardo Jimenez Martinez
We summarize recent results at NIST to develop high-performance yet highly miniaturized magnetic sensors based on atomic vapors confined in microfabricated
Background The U.S. Centers for Disease Control and Prevention (CDC) has reported that half of non-fatal CO poisoning incidents during the hurricane season in
Over the last thirty years, much research has been done on the development of failure event databases and fatigue modeling of crack growth in pressure vessels
Paul D. Over, George M. Awad, Alan Smeaton, Colum Foley, James Lanagan
This paper begins by considering a number of important design questions for a web-scale, widely available, multimedia test collection intended to support long
Nenad Ivezic, Hyunbo Cho, Jungyub Woo, Jun H. Shin, Jaewook Kim, Mohammad Abidi, Asuman Dogac, Tuncay Namli, Christine Legner, Francois Fischer
We describe an initial effort to create a comprehensive and coherent framework for feasibility analysis of the Global Interoperability Test Bed for eBusiness
We derive a model of congestion control where the trade-off between utility and path diversity can be investigated. In a network where there can be multiple
Chen Wang, Liangchun (. Yu, Jason P. Campbell, Kin P. Cheung, Yi Xuan, Peide Ye, John S. Suehle, David Zhang
Fast Id-Vg measurements on very high performance devices (very low channel ON-resistance) and larger area devices (therefore large gate capacitance) are subject
William M. Pitts, Gregory Hasapis, Patrick Macatangga
A series of experiments designed to characterize fire spread and growth on flat samples of commercial non-fire-retarded flexible polyurethane foam have been
This study compared random and t-way combinatorial inputs of a network simulator, to determine if these two approaches produce significantly different deadlock
Kenneth A. Snyder, Paul E. Stutzman, Jacob Philip, David W. Esh
The hydration products of varying proportions of portland cement, fly ash, ground granulated blast furnace slag, and silica fume in blended systems were
Jinan Zeng, Howard W. Yoon, George P. Eppeldauer, Leonard M. Hanssen, Joseph P. Rice
The spectral irradiance responsivity calibrations of InSb radiometers measured on the tunable-laser based Infrared Spectral Irradiance and Radiance Responsivity
A major aerospace company operates large factories that involve thousands of component parts, subassemblies, major sub-systems, tools, fixtures, and material