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NIST Authors in Bold

Displaying 45026 - 45050 of 73960

Report on the Second Modes of Operation Workshop

October 1, 2001
Author(s)
Morris J. Dworkin
NIST sponsored a public workshop for the analysis of block cipher modes of operation on August 24, 2001, in Goleta, California. This report summarizes the presentations and discussions at that workshop.

Role of Flaw Statistics in Contact Fracture of Brittle Coatings

October 1, 2001
Author(s)
P Miranda, Antonia Pajares, F Guiberteau, F Cumbrera, Brian R. Lawn
A flaw statistics analysis is here developed to account for systematic differences between experimentally observed and theoretically predicted critical loads for the initiation of contact-induced radial cracks in brittle coatings on compliant substrates

Scheme to Calculate Core Hole-Electron Interactions in Solids

October 1, 2001
Author(s)
J A. Soininen, Eric L. Shirley
We present a first-principles scheme for calculating a core-hole potential for core electron excitations. The scheme incorporates atomic and solid-state screening in the description of core excitations in several materials.We compare the results calculated

Self-Energy Screening in Two-Electron Ions

October 1, 2001
Author(s)
Paul Indelicato, Peter Mohr
The self-energy screening correction to the Coulomb part of the electron-electron interaction (self-energy screening) is evaluated. We consider only the monopole term, which is the only one present in many cases, and the direct term. We evaluate the energy

Separation of Scales for Growth of an Alloy Needle Crystal

October 1, 2001
Author(s)
R F. Sekerka, Sam R. Coriell, Geoffrey B. McFadden
We reexamine the problem of a needle crystal (a model for a dendrite primary stalk) having the shape of a paraboloid of revolution growing at constant velocity from a supercooled binary alloy with given bulk concentration and far-field temperature. The

Single Pulse Shock Tube

October 1, 2001
Author(s)
Wing Tsang, A. Lifshitz
This chapter is concerned with the use of the single pulse shock tube for studying the mechanisms and rate constants for the decomposition of polyatomic molecules at elevated temperatures. It begins with a discussion of the technique. The requirements and

Some Developments at NIST on Traceability in Dimensional Measurements

October 1, 2001
Author(s)
Dennis A. Swyt, Steven D. Phillips, J Palmateer
This paper reports to the international community on recent developments in technical ;policies, programs, and capabilities at the U.S. National Institute of Standards and Technology (NIST) related to traceability in dimensional measurements. These

Standards for Reliability Testing of Heavy Vehicle

October 1, 2001
Author(s)
S Jahanmir, James F. Kelly, William E. Luecke
The objective of this project is to develop international standard test methods for assessing the reliability of ceramic components used in diesel engines and other heavy vehicle propulsion systems. Advanced ceramics such as silicon nitrides offer unique

Statistical Process Monitoring for Autocorrelated Data

October 1, 2001
Author(s)
Nien F. Zhang
In the past years statistical process methodologies have been widely used in industry for process monitoring. However, the assumption that the process data are statistically independent is often invalid. This article discusses the approaches to deal with

Structural Control of Elastic Constants of Mullite in Comparison to Sillimanite

October 1, 2001
Author(s)
B Hildmann, H M. Ledbetter, Sung Kim, H A. Schneider
The nine elastic stiffness coefficients C, of a mulitte single crystal (2Al 2O 3.SiO 2) were measured using Acoustic Resonance Spectroscopy (ARS). The obtained values are similar to those of the structurally related alumino-silicate phase sillimanite (Al

Structure and Electronic Transport Properties of Si-(B)-C-N Ceramics

October 1, 2001
Author(s)
A M. Hermann, Y T. Wang, P A. Ramakrishnan, Davor Balzar, L A. An, C Haluschka, R Riedel
The structure and electronic transport properties of polymer-derived pristine-and boron-doped silicon-carbonitride ceramics have been studied, with particular emphasis on understanding the effect of annealing treatments. Structural analysis using the

Techniques to Improve Bluetooth Performance in Interference Environments

October 1, 2001
Author(s)
Nada T. Golmie, Nicolas Chevrollier
Bluetooth is a radio technology for Wireless Personal Area Networks operating in the 2.4 GHz ISM band. Since both Bluetooth and IEEE 802.11 devices use the same frequency band and may likely come together in a laptop or may be close together at a desktop

Temperature Measurement and Control in Microfluidic Systems

October 1, 2001
Author(s)
David J. Ross, Michael Gaitan, Laurie E. Locascio
We describe a technique for the measurement of fluid temperatures in microfluidic systems based on temperature-dependent fluorescence. The technique is easy to implement with a standard fluorescence microscope and CCD camera. The efficiency of the method

Test-Chamber Imaging Using Spherical Near-Field Scanning

October 1, 2001
Author(s)
Ronald C. Wittmann, Michael H. Francis
Although the theory is straightforward, practical implementation of spherical near-field scanning for evaluating test chambers presents some significant challenges. Among these are the requirement for accurate probe positioning and the difficulty in

The Ninth Text REtrieval Conference (TREC-9)

October 1, 2001
Author(s)
Ellen M. Voorhees, Donna K. Harman
This paper provides an overview of the ninth Text REtrieval Conference (TREC-9) held in Gaithersburg, Maryland, November 13-16, 2000. TREC-9 is the latest in a series of workshops designed to foster research in text retrieval. This year's conference

Time- and Frequency-Domain Analysis of EMC Test Facilities

October 1, 2001
Author(s)
David R. Novotny, Robert T. Johnk, Claude Weil, Seturnino Canales
We have developed a methodology to determine the quality of an EMC test facility using equipment that may be generally available to RF testing services. By utilizing both, the time- and frequency-domains, an accurate picture of the scattering , and modal
Displaying 45026 - 45050 of 73960
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