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Displaying 49651 - 49675 of 74228

Reference Standards, Uncertainties, and the Future of the NIST Electronic Kilogram

July 1, 1999
Author(s)
Richard L. Steiner, David B. Newell, J. Schwarz, Edwin R. Williams
The National Institute of Standards and Technology (NIST) watt balance experiment recently made a new determination of Planck's constant with a relative standard uncertainty of 87 x 10 -9 (k = 1), concurrently with an upper limit on the drift rate of the

Review of Programming the Finite Element Method, Third Edition

July 1, 1999
Author(s)
William F. Mitchell
Programming the Finite Element Method. 3rd Edition. By I.M. Smith and D.V. Griffiths. John Wiley & Sons Ltd., West Sussex, UK, 1998. $49.95. xii+534pp., paperback. ISBN 0-471-96543-X.This is the third edition of this book. The principal differences between

Rockwell Hardness - A Method-Dependent Standard Reference Material

July 1, 1999
Author(s)
Samuel R. Low III, R J. Gettings, Walter S. Liggett Jr, Jun-Feng Song
Rockwell hardness is not a fundamental physical property of a material. It is a method-dependent measurement of the deformation of the material to an applied force. There are no alternative measurement systems to directly or independently measure Rockwell

Rockwell Hardness - A Method-Dependent Standards Reference Material

July 1, 1999
Author(s)
Samuel Low, R Gettings, Walter S. Liggett Jr, Jun-Feng Song
Rockwell hardness is a method-dependent measurement of the deformation of a material in response to an applied force. It is not a fundamental physical property of a material. There are no alternative measurement systems to directly or independently measure

Spray Flame Measurements for CFD Model Validation

July 1, 1999
Author(s)
J F. Widmann, S R. Charagundla, Cary Presser
Experimental data were collected for the purpose of validating multiphase combustion models and submodels. A spray combustor was fabricated that permits well-defined boundary and input conditions, and measurements were carried out that characterize the

Stray Light Elimination in Making Projection Display Measurements

July 1, 1999
Author(s)
Paul A. Boynton, Edward F. Kelley
Electronic front-projection display specifications are often based on measurements made in ideal darkroom conditions. However, not everyone has access to such a facility. In many environments, ambient light from other sources in the room illuminates the

Studies of Ion Bombardment in High Density Plasmas Containing CF 4

July 1, 1999
Author(s)
James K. Olthoff, Yicheng Wang
We report ion energy distributions, relative ion intensities, and absolute total ion current densities at the grounded electrode of an inductively coupled Gaseous Electronics Conference radio-frequency reference cell for discharges generated in pure C 4

The Future of Gate Dielectrics Considered

July 1, 1999
Author(s)
Curt A. Richter
Symposium R, Ultrathin SiO 2 and High-K Materials for ULSI Gate Dielectrics, provided a large (20 invited speakers and more than 100 total presentations) and exciting overviews of many possible solutions for technologically critical issues associated with

The Seventh Text REtrieval Conference (TREC-7)

July 1, 1999
Author(s)
Ellen M. Voorhees, Donna K. Harman
This report constitutes the proceedings of the seventh Text REtrieval Conference (TREC-7) held in Gaithersburg, Maryland, November 9-11, 1998. The conference was co-sponsored by the National Institute of Standards and Technology (NIST) and the Defense
Displaying 49651 - 49675 of 74228