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A fire and the objects involved in the fire form a highly complex dynamic system. Important processes occur over a wide range of spatial and temporal scales
Samuel P. Benz, Charles J. Burroughs, Paul D. Dresselhaus, Thomas E. Lipe, Joseph R. Kinard Jr.
In order to improve the low-voltage calibration service at NIST we have constructed an ac Josephson voltage standard system with a maximum rms output voltage of
NIST has developed the capability to measure noise parameters on a wafer int he 1-12.4 GHz range. In this paper we briefly describe the measurement methods and
Eyal Gerecht, Dazhen Gu, James P. Randa, Dave K. Walker, Robert L. Billinger
We report on design of a radiometer for traceable noise-temperature measurements at terahertz frequencies, including noise measurements on cryogenic IF
Thomas P. Crowley, J Miall, J dereede, J. Furrer, A Michaud, E. Dressler, T Zhang, K. Shimaoka, J H. Kim
We present the results of a supplementary comparison in RF power measurements with 2.4 mm connectors. This is the highest frequency RF power comparison with
Charles J. Burroughs, Samuel Benz, Paul Dresselhaus, Yonuk Chong, Bryan C. Waltrip, Thomas L. Nelson, J. Williams
We are implementing a new standard for 60 Hz mains power based on precision sinusoidal reference voltages from two independent Programmable Josephson Voltage
We measured the charge noise of four Al-based SET transistors on multiple cooldowns. We found a consistent 1/f component independent of thermal cycling and
Tao Wu, Zuzanna T. Cygan, Chang Xu, Kathryn L. Beers
Advanced polymeric materials in applications as diverse as tissue engineering, electronics and personal care products require superior control of a wide range
The resolution of an optical microscope is limited by the optical wavelengths used. However, there is no fundamental limit to the sensitivity of a microscope to
Key and supplementary comparisons are of interest to the metrology community because they provide the means of demonstrating the degree of equivalence between
Vincent A. Hackley, Andrew J. Allen, P R. Jemian, J M. Raitano, S W. Chan
Nanocrystalline ceria particles, with dimensions as small as 2 nm, have been prepared at room temperature by a soft chemical route using aqueous cerium nitrate
Katrice A. Lippa, Lane C. Sander, Raymond D. Mountain
Highly ordered morphological features were characterized for molecular dynamics simulated alkyl-modified silica models that represent chromatographic materials
In this paper we present a DSR-based multi-path Routing protocol, which has been developed for transmission of Multiple Description Coded (MDC) packets in
The National Research Council's (NRC) Josephson voltage standard (JVS) has been directly compared with the compact, transportable Josephson array standard of
Recent modifications to the precision 1 ohm resistor current comparator systems at the National Institute of Standards and Technology (NIST) allow for improved
Robert T. Johnk, David R. Novotny, Chriss A. Grosvenor, Nino Canales, Janalee A. Graham, Doug Martin, Scott Yencer, Donald Hibbard, Louis L. Nagy, Tyrone L. Roach
This paper describes a thorough evaluation of an outdoor automotive antenna test range. Electric-field uniformity results are generated from accurate, full-wave
Jose M. Ortiz-Rodriguez, Allen R. Hefner Jr., David W. Berning, Colleen E. Hood, S. Olcum
Silicon carbide (SiC) power devices have begun to emerge recently with a performance that is superior to that of silicon power devices. Therefore, the push to
Tam H. Duong, Allen R. Hefner Jr., David W. Berning
Previously developed IMPACT software tools are extended to include the material parameters and device structures of SiC power devices. These software tools
We present a frequency-resolved coherent LIDAR (FReCL) based on a frequency comb source that provides higher performance than that of conventional pulsed range
Nathan R. Newbury, John J. McFerran, William C. Swann
Fiber laser-based frequency combs typically exhibit broad optical linewidths, particularly in the wings. These broadened linewidths originate from white
We discuss the use of tensor product B-splines to generate grids, or meshes, to facilitate the plotting of high level mathematical functions for the National
Roger V. Bostelman, Tsai Hong Hong, Rajmohan Madhavan
The performance evaluation of an obstacle detection and segmentation algorithm is explained upon comparing a new range camera to ground truth. Automated Guided
For efficient and effective operations on Lunar and/or Martian surfaces, it will be necessary to develop robots with the ability to successfully perform
Hui-Min Huang, K Pavek, James S. Albus, Elena R. Messina
The initial construct of the framework for the Autonomy Levels of Unmanned Systems (ALFUS) was presented in the 2004 SPIE3 Defense and Security Symposium. This
James S. Albus, Anthony J. Barbera, Harry A. Scott, Stephen B. Balakirsky
Tactical behaviors for autonomous ground and air vehicles are an area of high interest to the Army. They are critical for the inclusion of robots in the Future
John B. Schlager, Norman Sanford, Kristine A. Bertness, Joy Barker, Alexana Roshko, Paul T. Blanchard
Polarization- and temperature-dependent photoluminescence (PL) measurements were performed on individual GaN nanowires. These were grown by catalyst-free
Roger V. Bostelman, Tsai Hong Hong, Rajmohan Madhavan, Tommy Chang, Harry A. Scott
As unmanned ground vehicles take on more and more intelligent tasks, determination of potential obstacles and accurate estimation of their position become
Craig I. Schlenoff, R Washington, Anthony J. Barbera, C Manteuffel
The level of automation in combat vehicles being developed for the Army?s objective force is greatly increased over the Army?s legacy force. This automation is