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NIST Authors in Bold

Displaying 42501 - 42525 of 73960

X-Ray Transition Energies: New Approach to a Comprehensive Evaluation

January 1, 2003
Author(s)
R Deslattes, Ernest G. Kessler, Paul Indelicato, L de Billy, E Lindroth, J Anton
The authors combine modern theoretical calculations with evaluated selected experimental data to produce a comprehensive data resource of K- and L-x-ray transition and absorption edge energies for all of the elements from neon to fermium. The theoretical

A Well Dressed Microscope: Practical Experience with Microcalorimeter and Silicon Drift Detector Systems

December 31, 2002
Author(s)
John A. Small, Dale Newbury, John Henry J. Scott, L. King, Sae Woo Nam, Kent D. Irwin, Steven Deiker, Shaul Barkan, Jan Iwanczyk
NIST, Gaithersburg has recently installed a first generation silicon drift detector (SDD) from Photon Imaging and the NIST Boulder microcalorimeter energy dispersive x-ray spectrometer (υcal-EDS) on a JEOL 840 SEM, as shown in Fig. 1. [1,2] The instrument

Characterization of Linear and Branched Polyethylenimine (PEI) by ESI-MS and MALDI-TOF-MS

December 31, 2002
Author(s)
Kathleen M. Flynn, M Konaklieva, J P. Gu, Charles M. Guttman, S Wetzel
Polyethylenimine (PEI) is being used as a DNA transfection agent. Complexes of DNA and PEI are known to pass through the wall of a cell, and studies have reported that PEI s efficiency as a gene delivery vehicle depends on its molecular weight. Molecular

Distributed Testing of an Equipment-Level Interface Specification

December 31, 2002
Author(s)
Joseph Falco, John A. Horst, Hui-Min Huang, Thomas Kramer, Frederick M. Proctor, Keith A. Stouffer, Albert J. Wavering
A test suite for an key interface within a dimensional measuring system (coordinate measuring machine or CMM) is presented. The test suite consists of test procedures, test definitions, and various testing utilities. A real-time, distributed test utilizing

Estimating Temperatures in Compartment Fires

December 31, 2002
Author(s)
William D. Walton, Phillip H. Thomas
The ability to predict temperattures developed in compartment fires is of great significance to the fire protection professional. There are many uses for the knowledge of compartment fire temperatures, including the prediction of (1) the onset of hazardous

Intelligent Systems: Architectures, Design, Control

December 31, 2002
Author(s)
A Meystel, James S. Albus
This book addresses the theoretical foundations for the design of intelligent systems. It presents an approach based on loops of interacting components arranged in a multiresolutional hierarchy of layers. It proposes computational processes of focusing

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
Displaying 42501 - 42525 of 73960
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