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Displaying 51701 - 51725 of 74256

Data Element Naming Standards

December 1, 1998
Author(s)
J J. Newton
Naming conventions for data elements are part of the toolset of data administrators. Using them helps to achieve a set of standardized data elements. When gathered into a repository or data registry, this collection of meta data assists users to achieve

Detectability of Slow Crack Growth in Bridge Seels by Acoustic Emission

December 1, 1998
Author(s)
Marvin A. Hamstad, Joseph D. McColskey
The detectabillity of slow crack growth of cracks in bridge steels has been studied by use of acoustic emission testing technology. Fatigue crack-growth rates of nominally 1x10 -4 mm/cycle (4x10 -6 in./cycle) and 1x10 -3 mm/cycle (4x10-5 in/cycle) were

Dipole Moments of Weak, Electrically Small Emitters from TEM-Cell Measurements

December 1, 1998
Author(s)
David A. Hill, Kenneth H. Cavcey
This report presents a new method for determining the equivalent electric and magnetic dipole moments of an electrically small emitter from TEM-cell measurements. The electric dipole moments are determined from open-circuit measurements, and the magnetic

Directory of Federal Government Certification and Related Programs

December 1, 1998
Author(s)
Maureen A. Breitenberg
This directory is the third edition of the National Institute of Standards and Technology (NIST) directory of federal government procurement and regulatory conformity assessment of programs which may affect product and services in the marketplace. Prior

Extremely Low Frequency Electric and Magnetic Field Measurement Methods

December 1, 1998
Author(s)
Martin Misakian
During the early 1970's, reports originating in the Soviet Union described a variety of ill effects experienced by personnel working in 500 kV and 750 kV switchyards [1,2],. The effects were attributed to the presence of the ac electric fields as well as

Finite Precision Representation of the Conley Decomposition

December 1, 1998
Author(s)
Fern Y. Hunt
We present the theoretical basis for a novel way of studying and representing the long time behavior of finite dimensional maps. It is based on the sample paths of a Markov chain. Applications of the method to the approximation of attractors of maps and to

Heat Transfer Analysis and Modeling of a Cryogenic Laser Radiometer

December 1, 1998
Author(s)
Brian E. Johnson, A. R. Kumar, Z M. Zhang, David J. Livigni, Christopher L. Cromer, Thomas Scott
This study investigates the laser optimized cryogenic radiometer (LOCR) recently acquired by the National Institute of Standards and Technology in Boulder, Colorado, to calibrate laser power meters and detectors.
Displaying 51701 - 51725 of 74256
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