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Urban search and rescue (USAR) is one of the most dangerous and time-critical non-wartime activities. Researchers have been developing hardware and software to...
We present a wavelength calibration reference based on sampled fiber gratings stabilized to a molecular absorption line. Such a hybrid reference can provide...
The National Institute of Standards and Technology metrology development for the semiconductor industry and its supporting infrastructure is a broad set of...
The IPC-2252,'Design Guide for RF/Microwave Circuit Boards,'[1] (superceding the IPC-D-316) was published in July 2002. The IPC-2252 provides information...
The NIST Industrial Thermometer Calibration Laboratory (ITCL) is responsible for calibrating several different types of industrial thermometers. One of those...
This paper discusses methods of characterizing pore size distributions in low-k films by transmission electron microscopy (TEM), comparing both conventional TEM...
Temperature measurement represents one of the most frequently and broadly used measurements, with a majority of products manufactured having temperature...
A V. Murthy, D P. DeWitt, Benjamin K. Tsai, Gerald T. Fraser, Robert D. Saunders
Methodologies for calibrating heat-flux sensors designed for direct measurement of heat-transfer at a surface are presented. These sensors, extensively used in...
Shellee D. Dyer, Jonathan D. Kofler, Robert J. Espejo, Shelley M. Etzel
We discuss the key considerations necessary to create stable fiber Bragg grating (FBG) wavelength references. We describe two high-accuracy measurements to...
J M. Dudley, S. Coen, Nathan R. Newbury, Kristan L. Corwin, Scott Diddams, Brian Washburn, R Windeler
SC generation in photonic crystal fiber can be associated with intensity fluctuations arising from the nonlinear amplification of input pulse noise. Experiments...
Actively illuminated mm-wave imaging systems for concealed weapons detection offer the possibility of much higher sensitivity than with passive systems. We...
Howard W. Yoon, David W. Allen, Charles E. Gibson, Robert D. Saunders, Bettye C. Johnson, Steven W. Brown, Keith R. Lykke
In the International Temperature Scale of 1990 (ITS-90), temperatures above the freezing temperature of silver are defined with radiation thermometers...
A two-terminal bridge for resistance scaling directly from the quantum Hall resistance (QHR) to higher-resistance values now provides a secondary starting point...
John L. Michaloski, Frederick M. Proctor, William G. Rippey, S Kolla
Modern machine control systems rely heavily on software to achieve system functionality. Until recently, control software?s primary purpose was to provide logic...
George R. Jones Jr., Marlin E. Kraft, Randolph Elmquist
The 1(ohm) level of resistance has been the source of the lowest standard uncertainties for d.c. resistance calibrations. At the 10 k(ohm) level, equally good...
Per E. Fornberg, Christopher L. Holloway, Perry F. Wilson
The finite-difference time-domain method is used to investigate whether the currents induced on an equipment under test (EUT) in a TEM cell are similar to those...
Given two algorithms that perform the same task, one may ask which is better. One simple answer is that the algorithm that delivers the ?best? answer is the...
The intelligence of artificial systems is well quantified by the amount of specified complexity inherent in the system representation, provided we have tools to...
Christopher L. Holloway, David A. Hill, John M. Ladbury, Todd M. Lammers
In this paper we present an expression for two threshold metrics of a loaded reverberation chamber. One metric is based on the chamber quality factor (Q) and...
Christopher L. Holloway, Perry F. Wilson, Galen H. Koepke, Marco Candidi
In this paper we present a total radiated power limit for emission measurements in reverberation chambers. This total radiation power limit is intended to be...
Unmanned systems (UMSs) have been deployed to military and civilian operations. UMSs vary widely in their capabilities andcivilian operations. UMSs vary widely...
N H. Zimmerman, Craig I. Schlenoff, Stephen B. Balakirsky
The purpose of the work described in this paper is to analyze rule-based and functional tools to determine which are best suited for cost generation in an...
Highly imperfect, inconsistent information and incomplete a priori knowledge introduce uncertainty in sensor-centric unmanned navigation systems. Understanding...
Tony Barbera, John A. Horst, Craig I. Schlenoff, Evan K. Wallace, David Aha
Building knowledge-intensive real-time ntelligent control systems is one of the most difficult tasks that humans attempt. It is motivated by the desire to...
This paper discusses the advancement and proliferation of the Reference Test Arenas for Urban Search and Rescue Robots as representative search and rescue...
As unmanned systems become widely employed in various applications, it is critical to have a set of standard definitions and metrics for pecifying and...
N N. Sawant, M Kim, William V. Payne, Piotr A. Domanski, Y W. Hwang
The evaporative heat transfer characteristics of carbon dioxide (CO 2) were measured in a fluid-heated, 8.0 mm ID smooth stainless steel tube. The test...