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NIST HANDBOOK 150-2H National Voluntary Laboratory Accreditation Program Calibration Laboratories Technical Guide for Thermodynamic Measurements

February 21, 2004

Author(s)

C D. Faison, Carroll S. Brickenkamp

Initial Measurement Results for 20 NIST RM 8240 Standard Bullets

January 1, 2004

Author(s)

Li Ma, Jun-Feng Song, Eric P. Whitenton, Theodore V. Vorburger, J Zhou, A Zheng

The SRM (Standard Reference Material) 2460 standard bullets are developed at the National Institute of Standards and Technology (NIST) to support the National Integrated Ballistics Information Network (NIBIN), recently established by the Bureau of Alcohol

The Normalized Reduced Form and Cell Mathematical Tools for Lattice Analysis--Symmetry and Similarity

November 1, 2003

Author(s)

Alan D. Mighell

To intelligently and effectively use the crystallographic databases, dierse mathematical and computer tools are required that can delve into the nature of a given lattice or that can cut across a set of lattices to elucidate various types of interlatice

Autonomy Level Specification for Intelligent Autonomous Vehicles: Interim Progress Report

October 1, 2003

Author(s)

Hui-Min Huang, Elena R. Messina, James S. Albus

As unmanned systems are becoming widely employed in various applications, it is critical to have a set of standard definitions and metrics for specifying and evaluating the systems in terms of their levels of autonomy. Autonomy levels for unmanned systems

NIST HANDBOOK 150-2F National Voluntary Laboratory Accreditation Program Calibration Laboratories Technical Guide for Dimensional Measurements

September 21, 2003

Author(s)

C D. Faison, Carroll S. Brickenkamp

Temperature Metrology and Its Impact on Industry

September 1, 2003

Author(s)

Hratch G. Semerjian, Ellyn S. Beary

Temperature measurement represents one of the most frequently and broadly used measurements, with a majority of products manufactured having temperature measurement devices as an esential component. The accuracy and precision of these temperature

Transverse Compressive Stress Effect in Y-Ba-Cu-O Coatings on Biaxially Textured Ni and Ni-5at.%W Substrates

June 1, 2003

Author(s)

Najib Cheggour, John (Jack) W. Ekin, Cameron C. Clickner, D. T. Verebelyi, C. L. H. Thieme, Ron Feenstra, P Goyal, D F. Paranthaman

Electromechanical properties of yttrium-barium-copper-oxide (YBCO) coatings on both pure Ni and Ni-5at.%W alloy rolling-assisted, biaxially-textured substrates (RABiTS) were investigated. The effect of transverse compressive stress on transport critical

National Voluntary Laboratory Accreditation Program (NVLAP) Directory of Accredited Laboratories (2003 Edition)

March 12, 2003

Author(s)

Vanda R. White

The NVLAP Directory of Accredited Laboratories is published annually and provides a listing of laboratories accredited by the National Voluntary Laboratory Accreditation Program (NVLAP). Over 800 accreditations in 25 fields of testing and calibration are

Estimating the Work in Integer Partitioning

January 31, 2003

Author(s)

April Andreas, Isabel M. Beichl

For a given set of numbers, the integer partitioning problem is to divide the numbers into two groups, so that the sums of the numbers in each group differ by the smallest amount possible. In a balanced perfect partition, the sums differ by only zero or

Lattice Matching (LM)-Prevention of Inadvertent Duplicate Publications of Crystal Structures

October 1, 2002

Author(s)

Alan D. Mighell

Lattice-matching techniques have proved to be an extremely effective for the identification of unknown crystalline materials. A commonly employed lattice-matching strategy is based on matching the reduced cell of an unknown against a database of known

Conventional Cells--The Last Step Toward General Acceptance of Standard Conventional Cells for the Reporting of Crystallographic Data

August 1, 2002

Author(s)

Alan D. Mighell

The Absolute Integrating Sphere Method is now used at NIST for the detector-based calibration of total luminous flux of lamps, as well as for the realization of the lumen. This method has many benefits for high-accuracy applications, allowing for

Hierarchical Planning Algorithms

April 5, 2002

Author(s)

Alberto Lacaze

A novel method for communicating commands in hierarchical planning control is presented. This new method can be used to warranty that plans created will be optimal within the defined planning graphs throughout the planning hierarchy. Boundary conditions

Lattice Symmetry and Identification--The Fundamental Role of Reduced Cells in Materials Characterization

February 1, 2002

Author(s)

Alan D. Mighell

In theory, physical crystals can be represented by idealized mathematical lattices. Under appropriate conditions, these representations can be used for a variety of purposes such as identifying, classifying, and understanding the physical properties of

NIST Handbook 150-2C:2001 NVLAP Calibration Laboratories, Technical Guide for Time and Frequency Measurements

September 21, 2001

Author(s)

C D. Faison, Carroll S. Brickenkamp

NIST HANDBOOK 150-2E National Voluntary Laboratory Accreditation Program Calibration Laboratories Technical Guide for Optical Radiation Measurements

August 21, 2001

Author(s)

C D. Faison, Carroll S. Brickenkamp

Proceedings of the Workshop on Measurement Traceability for Clinical Laboratory Testing and In Vitro Diagnostic Test Systems

May 1, 2001

Author(s)

Ellyn S. Beary

In November 2000, NIST hosted a workshop on Measurement Traceability for Clinical Laboratory Testing and In Vitro Diagnostic Devices. One of the driving forces was the new European Community (EC) In Vitro Diagnostic Devices (IVDD) directive that requires

Definitions of Terms and Modes Used at NIST for Value-Assignment of Reference Materials for Chemical Measurement

December 1, 2000

Author(s)

Willie E. May, Reenie M. Parris, C. M. Beck II, John D. Fassett, Robert R. Greenberg, Franklin R. Guenther, Gary W. Kramer, Stephen A. Wise, T.E. Gills, R Gettings, Bruce S. MacDonald

Frequency Dependence of a Cryogenic Capacitor Measured Using Single Electron Tunneling Devices

December 1, 2000

Author(s)

Ali L. Eichenberger, Mark W. Keller, John M. Martinis, Neil M. Zimmerman

A new type of capacitance standrd based on counting electrons has been built. The operation of the standrd has already given very promising results for the determination of the value of a cryogenic vacuum-gap capacitor. The new capacitance standard

Driving Autonomously Offroad up to 35 km/h

October 1, 2000

Author(s)

David Coombs, Karl Murphy, Alberto Lacaze, Steven Legowik

A robotic HMMWV (a.k.a. "humvee") drives autonomously offroad at speeds up to 35 km/h (10 m/s, 20 mph). Key features of the implementation that enable driving at these speeds are (1) planning the next 20 m with dynamically feasible trajectories, and (2)

Useful Lead and Bismuth Standards for Quantitative Electron Probe Microanalysis

August 1, 2000

Author(s)

Ryna B. Marinenko, Eric S. Windsor

This is a preliminary study of lead and bismuth selinides and tellurides to determine the usefullness of these materials as Pb and Bi standards for quantitative microanalysis. Precautions were taken during sample preparation procedures to reduce the

The Challenge of Intelligent Systems

July 19, 2000

Author(s)

A Meystel, Elena R. Messina

This paper analyzes the meaning of intelligence within the domain of intelligent control. Because of historical reasons, there are varying and diverse definitions of what constitutes an intelligent control system. Due to the multidisciplinary nature of

Status of Microanalysis Standards at the National Institute of Standards and Technology (NIST)

July 1, 2000

Author(s)

Ryna B. Marinenko

This is a review of the current status of microanalysis standards at NIST -what is presently available, what will soon be available, and what might be available in the future. Many of the standards issued in the past such as Cartridge Brass (SRM 478), Fe-3

Impact of Measurement and Standards Infrastructure on the National Economy and International Trade

April 1, 2000

Author(s)

Hratch G. Semerjian, Robert L. Watters

The U.S. Federal Government has a strong role in metrology R&D in the U.S because of its importance to the nation's economy and the Constitutional authority given to the National Institute of Standards and Technology (NIST). However, pressures to maintain

Laboratory Primary Standards

April 1, 2000

Author(s)

John D. Wright

Commonly used primary calibration techniques for the measurement of liquid and gas flows are described. The techniques described include: static gravimetric and dynamic gravimetric methods for both gases and liquids, liquid piston displacement provers

Certification of the Relative Molecular Mass and the Intrinsic Viscosity of SRM 2886, a Polyethylene of Narrow Molecular Mass Distribution

March 1, 2000

Author(s)

Kathleen M. Flynn, J R. Maurey, William R. Blair

The certification of a polyethylene standard reference material, SRM 2886, is described. The Mw of SRM 2886 by light scattering was determined to be 87.0x10+3 g/mol with a sample standard deviation of 2.4 x10+3 g/mol. A combined expanded uncertainty for