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Displaying 42901 - 42925 of 74196

Optimality Conditions for Hierarchical Control

November 7, 2002
Author(s)
P Boggs, Anthony J. Kearsley, J W. Tolle
Abstract As part of the study of techniques for solving PDE-constrained optimization problems, we consider the approximate pointwise control of a linear parabolic system with multiple targets. Assuming a hierarchy among the objectives, we derive optimality

Federal S/MIME V3 Client Profile

November 5, 2002
Author(s)
C M. Chernick
S/MIME (Secure / Multipurpose Internet Mail Extensions) is a set of specifications for securing electronic mail. S/MIME is based upon the widely used MIME standard and describes a protocol for adding cryptographic security services through MIME

2002 ITL Technical Accomplishments

November 1, 2002
Author(s)
Elizabeth B. Lennon
This report describes the activities and accomplishments of the Information Technology Laboratoy at the National Institute of Technology in 2002.

Acoustophoretic Characterization of Cement Suspensions

November 1, 2002
Author(s)
Robert J. Flatt, Chiara C. Ferraris
Acoustophoresis has been used to study the evolution of the surface potential of hydrating cement suspensions because it is potentially capable of measuring zeta potentials of cement suspensions at concentrations high enough not to modify ion/particle

Analysis of [nu] 2 , [nu] 4 Infrared Hot Bands of 32 S 16 O 3 : Resolution of the Puzzle of the V 1 CARS Spectrum

November 1, 2002
Author(s)
J Barber, E T. Chrysostom, Tony Masiello, J Nibler, A G. Maki, A Weber, Thomas A. Blake, R L. Sams
Further analysis of the high-resolution (0.0015 CM -1) infrared spectrum of 32S 160 3 has led to the assignment of more than 3100 hot band transitions from Ņ2 and Ņ4 levels to the states 2Ņ 2 (1=0), {nu] 2 + Ņ 4 (l= 1), and 2Ņ 4 (l=0, 2). These levels are

Analysis of the Isoelectric Point in Moderately Concentrated Alumina Suspensions Using Electroacoustic and Streaming Potential Methods

November 1, 2002
Author(s)
Vincent A. Hackley, J Patton, Lin-Sien H. Lum, R Wasche, H Abe, M Naito, Y Hotta, H Pendse
Alumina suspended in aqueous electrolytic solution was used as a model ceramic suspension to investigate the measurement precision and influencing factors for the determination of the isoelectric point (IEP) in moderately concentrated systems. Techniques

Artificial Molecules

November 1, 2002
Author(s)
W Jaskolski, Garnett W. Bryant, J Planelles, M Zielinski
Double semiconductor nanocrystals, called artificial molecules by analogy to artificial atoms (quantum dots), are investigated. Empirical tight-binding and k.p theories are used to obtain electronic structure, charge density distributions and optical

Automated Security Self-Evaluation Tool (ASSET)

November 1, 2002
Author(s)
Marianne M. Swanson, J Fabius, Marc Stevens, Mark McLarnon
The Automated Security Self-Evaluation Tool (ASSET) automates the process of completing a system self-assessment. ASSET will assist organizations in completing the self-assessment questionnaire contained in NIST Special Publication (Special Publication)

Automatic Capture, Representation, and Analysis of User Behavior

November 1, 2002
Author(s)
Sharon J. Laskowski, J A. Landay, M Lister
With the advent of the Web and the refinement of instrumentation and monitoring tools, software user interactions are being captured on a much larger scale than ever before. Automated support for the capture, representation, and empirical analysis of user

Calculation of Obstructed View Factors by Adaptive Integration

November 1, 2002
Author(s)
George Walton
This report describes the use of adaptive integration for the calculation of view factors between simple convex polygons with obstructions. The accuracy of the view factor calculation is controlled by a convergence factor. The adaptive integration method

CONTAMW 2.0 User Manual

November 1, 2002
Author(s)
William S. Dols, George Walton
This manual describes the computer program CONTAMW version 2.0 developed by NIST. CONTAMW is a multizone indoor air quality and ventilation analysis program designed to help you determine: airflows and pressures infiltration, exfiltration, and room-to-room

Database for Computational Thermodynamics and Diffusion Modeling Workshop Report

November 1, 2002
Author(s)
Ursula R. Kattner, William J. Boettinger, J E. Morral
Databases for computational thermodynamics and diffusion modeling can be applied to predict phase diagrams for alloy design and alloy behavior during processing and service. Databases that are currently available to scientists, engineers and students need

Database-Assisted Design and Wind Directionality Effects

November 1, 2002
Author(s)
A Rigato, P C. Chang, Emil Simiu
We present a simple methodology, developed for use in design assisted by electronic aerodynamic and climatological databases (for short, database-assisted design), that allows a realistic assessment of wind directionality effects. We apply the methodology

Database-Assisted Design for Wind: Basic Concepts and Software Development

November 1, 2002
Author(s)
T Whalen, Fahim H. Sadek, Emil Simiu
Standard provisions for wind loads on buildings have traditionally been based on summary tables and/or plots suitable for slide-rule calculations. The accuracy in the definition of wind loads inherent in such tables and plots is far lower than that

Dealing with Degeneracy in Triangulation

November 1, 2002
Author(s)
Francis Sullivan, Isabel M. Beichl
This is a tutorial article on a quick method for dealing with degeneracy in geometric computations with specific reference to triangulation. The type degeneracy targeted by this article that of four or more points on a circle and five or more points on a

Development and Validation of Corridor Flow Submodel for CFAST

November 1, 2002
Author(s)
J. L. Bailey, Glenn P. Forney, P. A. Tatem, Walter W. Jones
The modeling of fire and smoke spread is an evolving field. As knowledge is acquired and resources become available, models are enhanced to make their predictions more accurate and/or their computations faster. This paper will discuss the Consolidated Fire
Displaying 42901 - 42925 of 74196
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