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Displaying 11526 - 11550 of 13225

Issues Related to Spray Combustion Modeling Validation

January 1, 2001
Author(s)
J F. Widmann, Cary Presser
… has been a challenging task due to difficulties in both modeling and experimental measurements. However, … to be an essential exercise for the success of CFD tools in the devlopment of future combustion systems. This paper … being collected at National Institute of Standards and Technology (NIST) and validation of a commercial CFD code …

CODATA Recommended Values of the Fundamental Physical Constants: 1998

November 1, 2000
Author(s)
Peter J. Mohr, Barry N. Taylor
… recommended by the Committee on Data for Science and Technology (CODATA) for international use. Further, it describes in detail the adjustment of the values of the subset of … replaces its immediate predecessor recommended by CODATA in 1986. The new adjustment, which takes into account all of …

Continuous Wave Laser Radiometry Project

October 1, 2000
Author(s)
Daryl Myers, Christopher L. Cromer
… fiber power measurements, and high power laser metrology. In 1999, the project staff performed 87 calibrations, in the spectral range from 488 nanometers (nm) to 1700 nm, … of laser power at 633 nm was conducted with the Optical Technology Division. The table below reports on international …

An Approach for Measuring Reductions in Construction Worker Illnesses and Injuries: Baseline Measures of Construction Industry Practices for the National Construction Goals

September 1, 2000
Author(s)
Robert E. Chapman
… and Building Subcommittee of the National Science and Technology Council is developing baseline measures of current … Construction Goals are concerned with: (1) reductions in the delivery time of constructed facilities; (2) reductions in operations, maintenance, and energy costs; (3) increases …

Approach for Measuring Reductions in Construction Worker Illnesses and Injuries: Baseline Measures of Construction Industry Practices for the National Construction Goals.

September 1, 2000
Author(s)
Robert E. Chapman
… and Building Subcommittee of the National Science and Technology Council is developing baseline measures of current … Construction Goals are concerned with: (1) reductions in the delivery time of constructed facilities; (2) reductions in operations, maintenance, and energy costs; (3) increases …

Improved Near-Infrared Spectral Responsivity Scale

September 1, 2000
Author(s)
Ping-Shine Shaw, Thomas C. Larason, R Gupta, Steven W. Brown, Keith R. Lykke
… was constructed at the National Institute of Standards and Technology (NIST) for absolute radiometric measurements to improve detector spectral responsivity scales in the wavelength range from 900 nm to 1800 nm. In addition to the liquid-helium-cooled cryogenic radiometer, …

Use of Integrating Spheres as Uniform Sources for Accelerated UV Weathering of Advanced Materials

August 1, 2000
Author(s)
Joannie W. Chin, Jonathan W. Martin, Walter E. Byrd, E Embree
… chambers). Although numerous improvements have been made in the design of UV chambers over the last 80 years, the … and repeatability is attributed to systematic errors in their design, operation, and control which, in turn, have … UV chamber design having a basis in integrating sphere technology that greatly reduces the magnitude of these …

Imaging of Composite Defects and Damage Using Optical Coherence Tomography

May 1, 2000
Author(s)
Joy Dunkers, M J. Everett, D P. Sanders, Donald L. Hunston
… Group at the National Institute of Standards and Technology has found optical coherence tomography (OCT) to be … technique that can be applied to a variety of problems in polymer composites, for example, defect detection and damage evaluation.In this work, volumetric images of an epoxy/unidirectional …

Automated Earthmoving Status Determination

February 28, 2000
Author(s)
William C. Stone, Geraldine S. Cheok, Robert R. Lipman
… are underway at the National Institute of Standards and Technology (NIST) to develop automated non-intrusive … for daily construction monitoring at a $6M process plant in the spring of 2000. …

Applying Mobile Agents to Intrusion Detection and Response

October 1, 1999
Author(s)
Wayne Jansen, Tom T. Karygiannis, D G. Marks, Peter M. Mell
… go a long way toward realizing the ideal behavior desired in an Intrusion Detection System (IDS). This report is an … derived from mobility, but also those inherent to agent technology, such as autonomous components. We explore these benefits in some detail and propose specific research topics in both …

Results from the 1999 NIST Mixed-Stain Study #2 DNA Quantitation, Differential Extraction and Identification of the Unknown Contributors

September 1, 1999
Author(s)
Margaret C. Kline, Janette W. Redman, David L. Duewer, D J. Reeder
… The National Institute of Standards and Technology (NIST) has provided a number of educational … male reference. Set 3) five 20 L DNA TE buffer extracts in screw-capped vials with DNA concentrations stated to range … equal to} 20 ng/ L. Two of these Set 3 samples were, in fact, replicates. …

Four-Wave Mixing With Matter Waves

March 1, 1999
Author(s)
Lu Deng, Edward W. Hagley, J Wen, M Trippenbach, Y B. Band, Paul S. Julienne, J E. Simsarian, Kristian Helmerson, S L. Rolston, William D. Phillips
… to nonlinear optics, which now plays an important role in many areas of science and technology. One of the first applications of nonlinear optics … frequency by multi-wave mixing of several optical fields in a nonlinear medium, one whose refractive index depends on …

National Voluntary Laboratory Accreditation Program (NVLAP) 1999 Directory

March 1, 1999
Author(s)
Vanda R. White
… accredited by the National Institute of Standards and Technology, National Voluntary Laboratory Accreditation Program (NVLAP). Over 700 laboratories in 24 fields of accreditation are included in the 1999 edition. The Directory lists the name, address, …

Directory of Federal Government Certification and Related Programs

December 1, 1998
Author(s)
Maureen A. Breitenberg
… third edition of the National Institute of Standards and Technology (NIST) directory of federal government procurement … of programs which may affect product and services in the marketplace. Prior editions include: NBS SP 714, … Programs for Products and Services, published in April 1986: and NBS SP-739, Directory of Federal …

A Fast Pulse Oscilloscope Calibration System

October 1, 1998
Author(s)
J. P. Deyst, Nicholas Paulter, T. Daboczi, Gerard N. Stenbakken, T. M. Souders
… to the U.S. National Institute of Standards and Technology (NIST). It is comprised of fast electrical step … (calibration step signal) by NIST. When the FPOCS is in use, the calibration step signal is applied to the device …

An Approach for Measuring Reductions in Delivery Time: Baseline Measures of Construction Industry Practices for the National Construction Goals

July 1, 1998
Author(s)
Robert E. Chapman, R Rennison
… and Building Subcommittee of the National Science and Technology Council is developing baseline measures of current … Construction Goals are concerned with: (1) reductions in the delivery time of constructed facilities; (2) reductions in operations, maintenance, and energy costs; (3) increases …

Approach for Measuring Reductions in Operations, Maintenance, and Energy Costs: Baseline Measures of Construction Industry Practices for the National Construction Goals.

July 1, 1998
Author(s)
Robert E. Chapman, R Rennison
… and Building Subcommittee of the National Science and Technology Council is developing baseline measures of current … Construction Goals are concerned with: (1) reductions in the delivery time of constructed facilities; (2) reductions in operations, maintenance, and energy costs; (3) increases …

A Fast Pulse Oscilloscope Calibration System

May 1, 1998
Author(s)
J. P. Deyst, Nicholas Paulter, T. Daboczi, Gerard N. Stenbakken, T. M. Souders
… to the U.S. National Institute of Standards and Technology (NIST). It is comprised of fast electrical step … (calibration step signal) by NIST. When the FPOCS is in use, the calibration step signal is applied to the device …

Modes of Operation Validation System (MOVS): Requirements and Procedures

February 1, 1998
Author(s)
Sharon S. Keller, Miles E. Smid
… The National Institute of Standards and Technology (NIST) Modes of Operation Validation System (MOVS) specifies the procedures involved in validating implementations of the DES algorithm in FIPS PUB 46-2 , The Data Encryption Standard (DES) and the …

Analysis of Fire Sprinkler Systems Performance in the Northridge Earthquake

January 1, 1998
Author(s)
R P. Fleming
… The performance of nonstructural building components in the January 17, 1994 Northridge earthquake has received a … damage that can take place if the system is compromised in a building which otherwise remains structurally intact. … aspects of the protection rules up to current levels of technology. …

Surveying Through Solid Walls

June 8, 1997
Author(s)
William C. Stone
… A good metrology system in the automated environment must (1) measure the three … Automation and Robotics in Construction …

Comparison of Fire Model Predictions With Experiments Conducted in a Hangar With a 15 Meter Ceiling.

December 1, 1996
Author(s)
William D. Davis, Kathy A. Notarianni, Kevin B. McGrattan
… together with the National Institute of Standards and Technology are in the fourth year of a five year project designed to help NASA set guidelines for fire protection in high bay facilities. A high bay facility is defined in … of Fire Model Predictions With Experiments Conducted in a Hangar With a 15 Meter Ceiling. …

Nanostructure Fabrication via Laser-Focused Atomic Deposition

April 15, 1996
Author(s)
Robert Celotta, R Gupta, R E. Scholten, Jabez McClelland
… materials and devices will play an important role in a variety of future technologies, including magnetics. We … produced is not significantly limited by diffraction, as in optical lithography. Lines as narrow as 38 nm full width …
Displaying 11526 - 11550 of 13225
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