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Displaying 52376 - 52400 of 74036

Monitoring Composites with Optical Fiber Sensor Systems

April 26, 1998
Author(s)
Richard~undefined~undefined~undefined~undefined~undefined Parnas, Joy Dunkers, R A. Neff
An inexpensive optical fiber has been interfaced with high-speed fluorescence and near infrared spectrometers to provide real-time monitoring of fast-reacting systems. Cure monitoring measurements were conducted in high volume fraction, glass reinforced

TREC-6 Interactive Track Report

April 24, 1998
Author(s)
Paul D. Over
This report is an introduction to the work of the TREK-6 Interactive Track with its goal of investigating interactive information retrieval by examining the process as well as the results.Twelve interactive information retrieval (IR) systems were run on a

A Federal Public Key Infrastructure With Multiple Digital Signature Algorithms

April 22, 1998
Author(s)
William E. Burr, William T. Polk
Several digital algorithms are coming into general use. A certificate containing a key for one algorithm can be signed with a different algorithm. This paper discusses the interoperability issues where different digital signature algorithms are used in one

NIST/NBS Fire Research and FRCA: 25 Years of Progress

April 16, 1998
Author(s)
Richard G. Gann
The National Bureau of Standards' Center for Fire Research and the Fire Retardant Chemicals Association were formed within a year of each other. The former has undergone major organizational changes, NBS having become NIST, and fire research now being part

The Surgeon's Assistant

April 14, 1998
Author(s)
K Gallagher, D Wallace, Frederick E. Boland Jr., D W. Binkley, James R. Lyle
The Surgeon's Assistant is a tool for the maintainers of ANSI C programs. Using the Surgeon's Assistant, a software maintainer (a surgeon) can isolate program components for change; assess the impact of contemplated changes on components that are to remain

NIST Reference Radiometry Using Space Station Instrumentation

April 6, 1998
Author(s)
Raju V. Datla, Albert C. Parr, D. B. Pollock, Thomas L. Murdock, E A. Early
There has been a persistent need to provide long-term calibration reliability and assurance of accuracy for space-based sensor performance. The International Space Station (ISS) could serve as a platform from which radiometry based on reference standards

A Fortran 90 Interface for OpenGL: Revised January 1998

April 1, 1998
Author(s)
William F. Mitchell
It is important to provide a good fortran interface to OpenGL and related libraries for scientific visualization in mathematical software. OpenGL currently provides a fortran interface which can be used by fortran 77 or fortran 90 programs. However, this

A Novel Method to Determine the Mechanical Properties of Ultra-Thin Films

April 1, 1998
Author(s)
Christopher C. White, Wen-Li Wu
Recent experimental results based on x-ray reflectivity, ellipsometry and positron annihilation spectroscopy, etc. have demonstrated that physical properties of polymer films thinner than one micron may deviate significantly from the expected bulk values

Advanced MMI/MP for Demo III XUVs

April 1, 1998
Author(s)
Stephen B. Balakirsky, M J. Salonish, S D. Allen, Elena R. Messina, J Salinas
This paper outlines the goals and work accomplished thus far for both the man-machine interface (MMI) and mission planning (MP) elements of the eXperimental Unmanned Vehicle (XUV) program. It is the goal of the XUV program to make available to the user an

Anisotropic Microstructure of Plasma-Sprayed Deposits

April 1, 1998
Author(s)
J Ilavsky, Gabrielle G. Long, Andrew J. Allen, L Leblanc, M Prystay, C Moreau, Alan H. Band
The microstructure of plasma-sprayed deposits [PSD] is dominated by two void systems-interlamellar pores and intralamellar cracks - each with a different anisotropy. Varying anisotropies and crack-to-pore ratios within PSDs are responsible for the

Automation Infrastructure System for a Robotic 30-Ton Bridge Crane

April 1, 1998
Author(s)
William C. Stone, L E. Pfeffer
This paper describes the sensing portion of a system used to convert an existing 30-ton high bay bridge crane to computer control for automated placement of construction components. The system is being designed to permit either telepresent or fully

Careers in Government: Bench Scientist to Policy Wonk

April 1, 1998
Author(s)
K B. Gebbie
The U.S. system for graduate education in physics is arguably the most effective system yet devised for advanced training in physics. Focused as it is on original research, it teaches students to identify significant problems, study them in depth, and

Cargo Container Transfer Requirements for the Mobile Offshore Base

April 1, 1998
Author(s)
Roger V. Bostelman, Kenneth R. Goodwin
The purpose of this requirements statement is to serve as a guideline to Mobile Offshore Base (MOB) concept developers, so that cargo handling requirements are fully considered and addressed in the development of concepts and preliminary designs. These
Displaying 52376 - 52400 of 74036
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