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Displaying 53701 - 53725 of 73697

Embedded multiconductor transmission line characterization

June 8, 1997
Author(s)
Dylan F. Williams
This paper presents a measurement method that characterizes lossy printed multiconductor transmission lies embedded in transitions, connectors, or packages with significant electrical parasitics. We test the method on a pair of lossy coupled asymmetric

Surveying Through Solid Walls

June 8, 1997
Author(s)
William C. Stone
A good metrology system in the automated environment must (1) measure the three dimensional position and attitude of any component to a reasonable degree of accuracy; (2) acquire these data fairly rapidly; and (3) be capable of making reliable measurements

980 nm-pumped Er- and Er/Yb-doped waveguide lasers in LiNbO 3

June 1, 1997
Author(s)
J. Amin, J. A. Aust, D. L. Veasey, Norman Sanford
We demonstrate a 980 nm-pumped Er- and the first Er/Yb-doped waveguide laser in Ti:LiNbO 3. The devices were fabricated on x-cut LiNbO 3, with the guides parallel to the z-axis. This choice of waveguide orientation results in a reduced susceptibility to

Advanced Fire Safe Materials for Aircraft Interiors

June 1, 1997
Author(s)
R E. Lyon
Phenomenological equations for solid material burning in combination with pyrolysis kinetics and uncoupled transient heat conduction provide relationships between material properties and the fire response of polymeric solids. The predicted scaling of

Carbon Monoxide Formation Algorithm (NISTIR 6030)

June 1, 1997
Author(s)
William M. Pitts
This paper discusses an engineering approach for estimating the generation rate of carbon monoxide (CO) within a room containing a fire. The algorithm incorporates four CO formation mechanisms which have been identified in past investigations.

Evaluating Engineering Equations with Imprecise Quantitites

June 1, 1997
Author(s)
Ronald Giachetti
There is an increased awareness of the benefits of modeling imprecision in engineering problems, but success is limited by two problems associated with the calculus of imprecision: (1) Solving equations for a parameter is difficult because the common

Evaluation of Complex Fire Models (NISTIR 6030)

June 1, 1997
Author(s)
Richard D. Peacock, Paul A. Reneke, Walter W. Jones
Several methods for studying predictive capability and sensitivity have been applied to fire models, but with limited utility. These range from explicit evaluation of the equations used in simple models such as ASET to evaluation of complex models from

Evaluation of Seismic Performance Parameters

June 1, 1997
Author(s)
Hai S. Lew
Recent earthquakes have shown that buildings designed for life safety could sustain severe damage to structural and nonstructural elements and building contents. In the U.S. several groups have proposed performance-based seismic design approaches to
Displaying 53701 - 53725 of 73697
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