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Displaying 1551 - 1575 of 2521

Measuring the Impact of Information on Complex Systems

June 1, 2002
Author(s)
Larry H. Reeker, Albert W. Jones
The application of power-driven machinery to manufacturing and other areas of human endeavor characterized the Industrial Revolution in the 18th and 19th centuries. Measurement contributed in many ways to the increasing economic influence of these machines

Measuring the Impact of Information on Complex Systems

September 1, 2001
Author(s)
Albert T. Jones, Larry H. Reeker
The application of power-driven machinery to manufacturing and other areas of human endeavor characterized the Industrial Revolution in the 18th and 19th centuries. Measurement contributed in many ways to the increasing economic influence of these machines

Molecular Measuring Machine Design and Performance

January 1, 2001
Author(s)
John A. Kramar, Jay S. Jun, William B. Penzes, Vincent P. Scheuerman, Fredric Scire, E C. Teague
… in a vacuum of 10<sup>-5</sup> Pa and at a temperature of 20 ? 0.005?C. We have measured the pitch of a one-dimensional …

Spectral Data for Atoms and Ions

November 1, 2000
Author(s)
Joseph Reader
Progress continues on the development of databases for spectral properties of atoms and ions. Version 2.0 of the NIST Atomic Spectra Database (ASD) became available on the World Wide Web in March 1999. This version contains data for many maore spectra than

Transient Liquid-Phase Bonding in the Ni-Al-B System

November 1, 2000
Author(s)
Carelyn E. Campbell, William J. Boettinger
Transient liquid phase (TLP) bonding experiments were performed using a Ni-10.3 at. % Al alloy and a Ni-10 at. %B filler material and the results were compared to simulations performed using the finite-difference diffusion code, DICTRA. For the simulations

Infrared Spectral Responsivity Scale of NIST

May 1, 2000
Author(s)
George P. Eppeldauer, Alan L. Migdall
… holds the infraredpower responsivity scale between 2 m and 20 m. The combined standard uncertainty (k=1) of the spectral …

Vapor Pressure of the SrPbO 3 Perovskite Phase

April 1, 2000
Author(s)
Lawrence P. Cook, Winnie K. Wong-Ng
… perovskite phases PbTiO 3 and PbZrO 3 by a factors of ~ 20 to 50 and ~ 2 to 4, respectively. The slopes of the d(log …

Step Height Metrology for Data Storage Applications

November 1, 1999
Author(s)
R Koning, Ronald G. Dixson, Joseph Fu, Thomas Brian Renegar, Theodore V. Vorburger, V W. Tsai, Michael T. Postek
… of the bump height and pit depth measurements varied about 20 nm over the different sample regions.  The remaining …

Step-height Metrology for Data Storage Applications

November 1, 1999
Author(s)
R Koning, Ronald G. Dixson, Joseph Fu, Thomas Brian Renegar, Theodore V. Vorburger, V W. Tsai, Michael T. Postek
… of the bump height and pit depth measurements varied about 20 nm over the different sample regions. The remaining …

A Fast Pulse Oscilloscope Calibration System

October 1, 1998
Author(s)
J. P. Deyst, Nicholas Paulter, T. Daboczi, Gerard N. Stenbakken, T. M. Souders
… for digitizing oscilloscopes having bandwidths of 20 GHz. The system can provide traceability to the U.S. …

A Fast Pulse Oscilloscope Calibration System

May 1, 1998
Author(s)
J. P. Deyst, Nicholas Paulter, T. Daboczi, Gerard N. Stenbakken, T. M. Souders
… for digitizing oscilloscopes having bandwidths of 20 GHz. The system can provide traceability to the U.S. …

A Fast Pulse Oscilloscope Calibration System

May 1, 1998
Author(s)
J. P. Deyst, Nicholas Paulter, T. Daboczi, Gerard N. Stenbakken, T. M. Souders
… for digitizing oscilloscopes having bandwidths of 20 GHz. The system can provide traceability to the U.S. …

Data Map Workshop for Manufacturing Data

January 1, 1992
Author(s)
Steven R. Ray, M. K. Senehi
… The Data Map Workshop was held at NIST on March 19-20, 1992, to provide a forum for interested U.S. parties to …

SRM 482 Revisited After 30 Years

August 1, 2001
Author(s)
Eric S. Windsor, R Carlton, Scott A. Wight, C Lyman
The National Institute of Standards and Technology's (NIST) Standard Reference Material (SRM) 482 was issued by The National Bureau of Standards (NBS) in 1969 and has been continuously available to the public for over 30 years [1]. The standard consists of

Laboratory Tests of a Prototype Carbon Dioxide Ground-Source Air Conditioner

April 12, 2021
Author(s)
Harrison M. Skye, Wei Wu
… ranging (10 to 39) °C the CO2 system cooling COP ranged (7.3 to 2.4), whereas the R410A system values ranged (6.1 to … R410A GSHP COP was 4.57. At 'part-load' conditions (ELT 20 °C) both systems had a COP of ≈4.92. Further effort is … to increase the CO2 system efficiency at ELTs greater than 20 °C, since it underperformed the R410A system in that …
Displaying 1551 - 1575 of 2521
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