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Displaying 58776 - 58800 of 74223

Reciprocity Relations in Waveguide Junctions

July 1, 1993
Author(s)
Dylan F. Williams, Roger Marks
The Lorentz reciprocity condition is applied to junctions composed of reciprocal media which connect uniform but otherwise arbitrary waveguides. An expression relating the forward and reverse transmission coefficients is derived and factored into two terms

Specifications for an Application Protocol Development Environment

July 1, 1993
Author(s)
Steve Clark, Allison Barnard Feeney, James E. Fowler
The National PDES Testbed project at NIST is focused on the development and implementation of the emerging international Standards for the Exchange of Product model data (STEP). One subproject within the Testbed is the effort to establish an Applications

The Language of Tolerances

July 1, 1993
Author(s)
Ted Hopp
Dimensional tolerancing is a language used to communicate product specifications. Effective communication using this language relies on there being a common, shared meaning for tolerances. By this measure, the language relies on there being a common

Uncertainty Intervals for Polarized Beam Scattering Asymmetry Statistics

July 1, 1993
Author(s)
Kevin Coakley, Jabez McClelland, Michael H. Kelley, Robert Celotta
In many scattering experiments, the quantity of most direct physical interest is a measure of the difference between two closely related scattering signals, each generated by a Poisson scattering process. This difference is often expressed in terms of an

The Use of Vision and Touch Sensors for Dimensional Inspection Tasks

June 2, 1993
Author(s)
M Nashman
The purpose of dimensional inspection is to verify the geometry of a manufactured part. A machined part is either accepted or rejected based upon the sensed errors between the object and its specified geometry as defined in a CAD (Computer Aided Design)

A Tribometer for Measurements in Hostile Environments

June 1, 1993
Author(s)
Andrew Slifka, J Chaudhuri, R Compos, James D. Siegwarth
A tribometer at the National Institute of Standards and Technology in Boulder, Colorado is used to measure the coefficient of friction and the wear rate for various specimens in a controlled atmosphere of oxygen or non-corrosive gas. The wide range of
Displaying 58776 - 58800 of 74223
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