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Displaying 42601 - 42625 of 74053

Magnetic Technology Division: Programs, Activities, and Accomplishments

December 31, 2002
Author(s)
Ronald B. Goldfarb
The Magnetic Technology Division develops and disseminates measurement technology for industries broadly concerned with magnetic information storage and superconductor power. The division is located in Boulder, Colorado, part of the Electronics and

Local Protein Dynamics and Catalysis: Detection of Segmental Motion Associated With Rate-Limiting Product Release by a Glutathione Transferase

December 24, 2002
Author(s)
S G. Codreanu, Jane E. Ladner, G Xiao, N V. Stourman, D L. Hachey, G L. Gilliland, R N. Armstrong
Glutathione transferase rGSTM1-1 catalyzes the addition of glutathione (GSH) to 1-chloro-2,4-dinitrobenzene in which chemical step of the reaction is 60-fold faster than the physical step of product release. The hydroxyl group of Y115, located in the

Understanding the Correlation Structure of Network Traffic

December 24, 2002
Author(s)
Kevin L. Mills, J Yuan
This paper aims to improve current understanding of the correlation structure of traffic carried over large networks, such as the Internet. To achieve this aim we use simulation, adopting a methodology of homogenization to achieve a sufficiently large

Security of Public Web Servers

December 18, 2002
Author(s)
Shirley M. Radack
This ITL Bulletin summarizes NIST Special Publication 800-44, Guidelines on Securing Public Web Servers.

Information Access: Do You Mind?

December 10, 2002
Author(s)
John V. Cugini
Successful execution of many information-based tasks depends crucially on contextual knowledge. Language processing is particularly sensitive to context, and I will concentrate on it in this extended abstract as the example par excellence of knowledge

Multiline TRL Revealed

December 5, 2002
Author(s)
Donald C. DeGroot, Jeffrey Jargon, Roger Marks
We reveal the techniques behind a successful implementation of the Multiline TRL calibration for vector network analyzers (VNAs). For the first time, this paper describes the inner workings of NIST's Multical software, an evolved, automated implementation

Stacked Nanoscale Josephson Junction Arrays for High-Performance Voltage Standards

December 4, 2002
Author(s)
Samuel Benz, Paul Dresselhaus, Yonuk Chong, Charles J. Burroughs
Superconducting Josephson voltage standard systems have replaced electrochemical cell (battery-like) artifact standards for voltage metrology because quantum-based systems produce precise and accurate voltages independent of any material parameters. The

Impedance/Dielectric Spectroscopy of Electroceramics in the Nanograin Regime

December 3, 2002
Author(s)
N Kidner, Z J. Homrighaus, B J. Ingram, T Mason, Edward Garboczi
In the microcrystalline regime, the behavior of grain boundary-controlled electroceramics is well described by the brick layer model (BLM). In the nanocrystalline regime, however, grain boundary layers can represent a significant volume fraction of the

A Framework for Standard Modular Simulation

December 1, 2002
Author(s)
Charles R. McLean, Swee K. Leong
The primary reason for building manufacturing simulations is to provide support tools that aid the manufacturing deci-sion-making process. Simulations are typically a part of a case study commissioned by manufacturing management to address a particular set

A Monolithic CMOS Microhotplate-based Gas Sensor System

December 1, 2002
Author(s)
Muhammad Afridi, John S. Suehle, Mona E. Zaghloul, David W. Berning, Allen R. Hefner Jr., Richard E. Cavicchi, Stephen Semancik, C B. Montgomery, C J. Taylor
A monolithic CMOS microhotplate-based conductance type gas sensor system is described. A bulk micromachining technique is used to create suspended microhotplate structures. The thermal properties of the microhotplates include a one-millisecond thermal time
Displaying 42601 - 42625 of 74053
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