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Conferences

Extension of Voltage Range for Power and Energy Calibrations

Author(s)
O. Petersons, Thomas L. Nelson, Nile M. Oldham, Gerald FitzPatrick
A special purpose ac voltage divider system having voltage ratios of 600 V, 480 V, 360 V, and 240 V to 120 V has been developed to extend the voltage range of...

Experimental Noise Sources in the NIST Watt Balance

Author(s)
Richard L. Steiner, David B. Newell, Edwin R. Williams
The present NIST Watt Balance has a relative combined standard uncertainty of about 145 nW/W. The final results of this phase of the experiment are presented...

Fabrication of High-Value Standard Resistors

Author(s)
Ronald F. Dziuba, Dean G. Jarrett, L. L. Scott, Andrew J. Secula
The National Institute of Standards and Technology (NIST) has fabricated stable, transportable 10 MΩ} and 1 GΩ} standard resistors for use in an international...

Charge Offset and Noise in SET Transistors

Author(s)
Neil M. Zimmerman, J. L. Cobb
We report on several previous and ongoing investigations into the source of, and the amelioration of, the charge offset noise in SET (single-electron tunneling)...

A System to Measure Current Transducer Performance

Author(s)
Bryan C. Waltrip, Thomas L. Nelson
A special purpose ac current transducer measurement system capable of intercomparing transducers with ac output voltage ratios from 1:1 to 50:1 has been...

Calibration of Dissipation Factor Standards

Author(s)
Eric D. Simmon, Gerald FitzPatrick, O. Petersons
Dissipation factor (D) standards obtained by connecting a shielded three-terminal capacitor in series with a shielded resistor have been developed for...

Resistance Measurement Assurance Program at NIST

Author(s)
Ronald F. Dziuba, June E. Sims
The National Institute of Standards and Technology (NIST) offers resistance Measurement Assurance Program (MAP) transfers at the 1 ohm} and 10 kohm} levels, to...

Issues in Evaluating Face Recognition Algorithms

Author(s)
P J. Phillips, R. McCabe, R Chellappa
Biometric-based identification and verification systems are poised to become a key technology, with applications including controlling access to buildings and...

Insights From the Broadcast News Benchmark Tests

Author(s)
Walter S. Liggett Jr, W M. Fisher
The broadcast news benchmark tests have potential as a source of ideas for improving continuous speech recognition systems. This paper presents a data analysis...
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