U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 53476 - 53500 of 74045

Estimating Local Dimensionality

December 15, 1997
Author(s)
D L. Banks, R Olszewski
This paper suggests that one can use principal components analysis to assess the local dimensionality in a complex dataset. If this is large, then data mining is unlikely to be successful. If it is small, then various statistical techniques may be able to

Raman Investigation of the Layered Manganese Perovskite La1.2 Sr1.8 Mn207

December 4, 1997
Author(s)
D B. Romero, V B. Podobedov, A Weber, Joseph P. Rice, J.F. Mitchell, R P. Sharma, H D. Drew
We report the results of a detailed polarization and temperature dependence study of the Raman scattering from La1.2Sr1.8Mn207. The Raman spectra reveal three general spectral features. First, there are sharp peaks due to long-wavelength optic phonons

Fire Suppression Efficiency Screening Method

December 3, 1997
Author(s)
Jiann C. Yang, Michelle K. Donnelly, William L. Grosshandler
Most of the current methods for fire suppression efficiency screening (e.g., cup burners) are designed for screening agents that can be delivered in the form of vapor. The search for alternatives to halons for fire suppression applications has identified

A Method for Comparing Vector Network Analyzers

December 1, 1997
Author(s)
Donald C. DeGroot, Roger Marks, Jeffrey A. Jargon
We present a method of comparing two distinct vector network analyzer systems by taking the differences in calibrated S-parameters over a set of test devices. The maximum magnitude of all S-parameter differences in the ensemble of data provides an estimate
Displaying 53476 - 53500 of 74045
Was this page helpful?