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NIST Authors in Bold

Displaying 48951 - 48975 of 74084

Report on the NIST Java TM AES Candidate Algorithm Analysis

November 25, 1999
Author(s)
James F. Dray Jr.
NIST solicited candidate algorithms for the Advanced Encryption Standard in a Federal Register Announcement dated September 12, 1997. Fifteen candidates were submitted, and NIST has subsequently worked with a worldwide community of cryptanalysts and

Scalar Dissipation in Axisymmetric Jets

November 21, 1999
Author(s)
William M. Pitts
Scalar dissipation, defined as twice the product of the molecular diffusion coefficient and the local gradient of the mixture fraction taken as a dot product with itself, characterizes molecular mixing rates in turbulent flows and has a central role in

Two-Dimensional Index Profiling of Fibers and Waveguides

November 20, 1999
Author(s)
N. H. Fontaine, M. Young
We have constructued a two-dimensional refracted-ray scanner that can resolve index-of-refraction increments of approximately 4 x 10 -5. this resolution is an order of magnitude finer than the uncertainty of the measurement. The scanner can be adapted to

Microhotplate Gas Sensor Arrays

November 18, 1999
Author(s)
Richard E. Cavicchi, Stephen Semancik, R M. Walton, B Panchapakesan, Don L. DeVoe, M I. Aquino-Class, J D. Allen, John S. Suehle
In this work, micromachining and planar processing has been used to achieve solid state sensing devices with lower power consumption at lower cost. The small size brings new advantages for chemical selectivity as well: multi-element whose time-varying

Comparative Calibration of Heat Flux Sensors in Two Blackbody Facilities

November 17, 1999
Author(s)
A V. Murthy, Benjamin K. Tsai, Robert D. Saunders
This paper presents the results of heat flux sensor calibrations in two blackbody facilities: the 25 mm variable temperature blackbody (VTBB) primary facility and a recently developed 51 mm aperture spherical blackbody (SPBB) facility. Three Schmidt

Determination of Texture From Individual Grain Orientation Measurements

November 17, 1999
Author(s)
J Blendell, Mark D. Vaudin, Lin-Sien H. Lum
We present a technique for determining the texture of a polycrystalline material based on the measurement of the orientation of a number of individual grains. We assume that the sample has fiber texture and that the texture can be characterized by a

Lessons from 342 Medical Device Failures

November 17, 1999
Author(s)
D Wallace, David R. Kuhn
Today's highly complex systems often contain software. Lessons can be learned about softwaredevelopment and assurance concerning quality practices, from system failures activated bysoftware faults. This paper presents an analysis of failures of medical

On the Diffraction Limit for Lensless Imaging

November 17, 1999
Author(s)
Klaus Mielenz
The diffraction limit for lensless imaging, defined as the smallest obtainable point image, is analyzed and compared to the corresponding limit for imaging with lenses by means of theoretical considerations and numerical computations using the Fresnel

Status Report on the First Round of the Development of the Advanced Encryption Standard

November 17, 1999
Author(s)
James R. Nechvatal, Elaine B. Barker, Donna F. Dodson, Morris J. Dworkin, James Foti, E Roback
In 1997, the National Institute of Standards and Technology (NIST) initiated a process to select a symmetric-key encryption algorithm to be used to protect sensitive (unclassified) Federal Information, in furtherance of NIST's statutory responsibilities

Acquiring and Deploying Intrusion Detection Systems

November 16, 1999
Author(s)
Peter M. Mell
This ITL Bulletin provides basic information about intrusion detection systems (IDSs) to help organizations avoid common pitfalls in acquiring, deploying, and maintaining IDSs.

Using Chaos to Generate White Noise

November 15, 1999
Author(s)
Richard L. Kautz
Numerical simulations reveal that a phase-locked loop can be operated in a chaotic regime to generate a high level of noise which is approximately white over a broad frequency range. Heuristic arguments indicate that the low-frequency power spectrum may be
Displaying 48951 - 48975 of 74084