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Conferences

CHARACTERIZATION OF LOADING EFFECTS IN PRECISION 1 Ohm RESISTORS

June 1, 2008

Author(s)

George R. Jones Jr., Randolph Elmquist

Precision standard resistors manufactured within the last two decades using improved construction techniques and materials, such as the resistance alloy Evanohm...

A TWO-WAY JOSEPHSON VOLTAGE STANDARD COMPARISON BETWEEN NIST AND NRC

June 1, 2008

Author(s)

Yi-hua D. Tang, Barry Wood, Clark Hamilton

A two-way Josephson voltage standard (JVS) direct comparison between the National Institute of Standards and Technology (NIST) and the National Research Council...

UNCERTAINTY EVALUATION IN A TWO-TERMINAL CRYOGENIC CURRENT COMPARATOR

June 1, 2008

Author(s)

Marcos E. Bierzychudek, Randolph Elmquist

In this paper we present the uncertainty evaluation of a new cryogenic current comparator (CCC) bridge designed to compare two-terminal 1M Ω} and 10M Ω}...

HIGH RESISTANCE SCALING FROM 10 k(OHM) AND QHR STANDARDS USING A CRYOGENIC CURRENT COMPARATOR

June 1, 2008

Author(s)

Randolph Elmquist, George R. Jones Jr., Brian J. Pritchard, Marcos E. Bierzychudek, Felipe L. Hernandez

We describe a cryogenic current comparator (CCC) bridge for resistance scaling that provides improved measurement uncertainty over a range of resistance values...

SIM COMPARISON OF DC RESISTANCE AT 1 Ohm, 1 MOhm, AND 1 GOhm

June 1, 2008

Author(s)

Dean G. Jarrett, Randolph Elmquist, Nien F. Zhang, Alejandra Tonina, Janice Fernandes, Daniel Izquierdo, Dave Inglis, Felipe Hernandez-Marquez

A regional comparison of DC resistance standards at the nominal values of 1 Ohm, 1 MOhm, and 1 GOhm has recently been completed in the System Interamericano de...

A Reaction-Diffusion Model for Simulating 3-D Microstructure Development of Cement Paste

May 30, 2008

Author(s)

Jeffrey W. Bullard

A New Oscillator for SI-Traceable Measurements in Atomic Force Microscopy

May 29, 2008

Author(s)

Gregory W. Vogl, Jason J. Gorman, Gordon A. Shaw, Jon R. Pratt

See attached

Performance Evaluation of Speech Translation Systems

May 28, 2008

Author(s)

Brian A. Weiss, Craig I. Schlenoff, Gregory A. Sanders, Michelle P. Steves, Sherri Condon, Jon Phillips, Dan Parvaz

One of the most challenging tasks for uniformed service personnel serving in foreign countries is effective verbal communication with the local population. To...

On Enabling a Model-based Systems Engineering Discipline

May 28, 2008

Author(s)

Peter O. Denno, Thomas Thurman, John Mettenburg, Dwayne Hardy

This paper considers the requirements of a model-based systems engineering (MBSE) discipline, and the benefits that would be realized from it. A premise of MBSE...

Translation Adequacy and Preference Evaluation Tool (TAP-ET)

May 28, 2008

Author(s)

Mark A. Przybocki, Kay Peterson, P. S. Bronsart

Evaluation of Machine Translation (MT) technology is often tied to the requirement for tedious manual judgments of translation quality. While automated MT...

Towards a Multi-View Semantic Model for Product Feature Description

May 28, 2008

Author(s)

Patrick Hoffmann, Shaw C. Feng, Gaurav Ameta, Parisa Ghodous, Lihong Qiao

Multiple perspectives need to be included in a product development process. Engineers from different departments usually have different views on a product...

The Challenge of Measuring Defects in Nanoscale Dielectrics

May 26, 2008

Author(s)

Kin P. Cheung, John S. Suehle

Defects in nanoscale gate dielectric of MOS devices can exchange charges with the substrate via quantum mechanical tunneling. This characteristic has been...

Vibration-induced PM noise measurements of a rigid optical fiber spool

May 19, 2008

Author(s)

Jennifer A. Taylor, Craig W. Nelson, Archita Hati, Neil Ashby, David A. Howe

The opto-electronic oscillator (OEO) has emerged in recent years as an excellent low-noise source that rivals the best RF oscillators over broad offset...

A Line-Based Obstacle Avoidance Technique for Dexterous Manipulator Operations

May 19, 2008

Author(s)

Nicholas A. Scott, Craig R. Carignan

Cameras are often used for visual servoing or realtime mapping of the external environment in both autonomous and teleoperated tasks with a dexterous...

The Role of Folding in the Degradation of Ballistic Fibers

May 19, 2008

Author(s)

Walter G. McDonough, Gale A. Holmes, Jae Hyun Kim, Derek L. Ho

Research has indicated that the folding of ballistic fibers comprising soft body armor may be a factor in the performance deterioration that has been observed...

Long distance optical frequency transfer over fiber: predicting the frequency stability from the fiber noise

May 19, 2008

Author(s)

Nathan R. Newbury, Paul A. Williams, William C. Swann

We have recently demonstrated the coherent transfer of an optical signal over a 251 km link of optical fiber using the standard Doppler-cancellation approach to...

Capacity of Random Wireless Networks: Impact of Cooperative Network Coding

May 19, 2008

Author(s)

Yi Qian, Kejie Lu, Shengli Fu

The throughput capacity of random wireless networks has been studied extensively in the literature. Nevertheless, most existing studies are based on the...

Development Life Cycle and Tools for Data Exchange Specification

May 19, 2008

Author(s)

Katherine C. Morris, Puja Goyal, Simon P. Frechette

In enterprise integration, a data exchange specification is an architectural artifact that evolves along with the business. Developing and maintaining a...

Homeland Security Simulation Domain: A Needs Analysis Overview

May 19, 2008

Author(s)

Charles R. McLean, Sanjay Jain, Yung-Tsun T. Lee

The effective use of modeling, simulation, and analysis (MSA) applications could greatly enhance our nation s ability to achieve homeland security goals. The...

On the Use of Dipole Models to Correlate Emission Limits Between EMC Test Facilities

May 19, 2008

Author(s)

Perry F. Wilson

Simple formulas are developed that enable emission limits from one EMC facility type to be translated to other EMC facility types. Facility types considered are...

Time and Frequency Transfer Using a WAAS Satellite with L1 and L5 Code and Carrier

May 19, 2008

Author(s)

Marc A. Weiss, P Fenton, Edward Powers, A. Kropp, Raymond Pelletier

Two Wide Area Augmentation System (WAAS) satellites are now transmitting the standard L1 and L5 carriers and codes of the Global Positioning System (GPS). Since...

Differential Delays Between Two Geodetic GPS Receivers for L1 and L2 Code and Carrier Signals

May 19, 2008

Author(s)

Marc A. Weiss, Megan Hottovy

Two geodetic-type receivers of Global Positioning System (GPS) satellite signals of different manufacture were connected with a splitter to the same antenna for...

Microfabricated Atomic Magnetometers and Applications

May 19, 2008

Author(s)

John E. Kitching, Svenja A. Knappe, Vishal Shah, P Schwindt, William C. Griffith, Ricardo Jimenez Martinez, Jan Preusser

We describe recent work at NIST to develop compact, sensitive atomic magnetometers using a combination of precision optical spectroscopy, atomic physics and...

ER Simulation Prototypes for Incident Management Training

May 19, 2008

Author(s)

Guodong Shao, Charles R. McLean

First responders and incident management personnel need better training resources to prepare for future disasters. Live training exercises while valuable are...

Dark Resonance in Bichromatic Linearly Polarized Optical Field on Cs D₁ Line

May 19, 2008

Author(s)

Ken-ichi Watabe, Takeshi Ikegami, Akifumi Takamizawa, Shinya Yanagimachi, Shin-ichi Ohshima, Svenja A. Knappe

We describe a simple method for observing high-contrast coherent population trapping signals on the Cs D 1 line. The high-contrast signals were achieved by use...

ECS Transactions

May 18, 2008

Author(s)

Yaw S. Obeng, Stephen Knight, Joaquin (. Martinez

Nanoelectronics require the introduction of several new uncharacterized material(s) combinations and new processing techniques. The critical metrology and...

Long distance optical frequency transfer over fiber: predicting the frequency stability from the fiber noise

May 18, 2008

Author(s)

Nathan R. Newbury, Paul A. Williams, William C. Swann

We have recently demonstrated the coherent transfer of an optical signal over a 251 km link of optical fiber by use of the standard Doppler-cancellation...

Progress in the Development and Performance of a High Frequency 4 K Stirling-Type Pulse Tube Cryocooler

May 17, 2008

Author(s)

Peter E. Bradley, Ray Radebaugh, Isaac Garaway

Presently we are in the development process for a 4 K Stirling-type pulse tube cryocooler to support cooling requirements for a mobile THz detector system. In...

Aminoxyl (nitroxyl)Radicals in the Decomposition of RDX

May 13, 2008

Author(s)

Karl K. Irikura

The explosive RDX (1,3,5-trinitrohexahydro-s-triazine) is thought to decompose by homolytic N-N bond cleavage, among other possible initiation reactions...

Relating Taxonomies with Regulations

May 13, 2008

Author(s)

Chin P. Cheng, Jiayi Pan, Gloria T. Lau, Kincho H. Law, Albert T. Jones

Increasingly, taxonomies are being developed for a wide variety of industrial domains and specific applications within those domains. These taxonomies attempt...

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