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Conferences

Modern Wavelength Standards in the Ultraviolet and Vacuum Ultraviolet

July 1, 1999

Author(s)

Joseph Reader, Craig J. Sansonetti

In recent work at the National Institute of Standards and Technology the Atomic Spectroscopy Group has characterized several sources of wavelength standards...

Methods to Remove Distortion Artifacts in Scanned Projections

July 1, 1999

Author(s)

A R. Kalukin, Zachary H. Levine, Charles S. Tarrio, S P. Frigo, I McNulty, S S. Wang, C C. Retsch, M Kuhn, B Winn

Atrifacts induced by distortions which sometimes occur in two-dimensional projection images can appear in the resulting tomographic reconstructions. We describe...

Extensions of the Single-Integral-Equation Method

July 1, 1999

Author(s)

Egon Marx

Scattering of electromagnetic waves by homogeneous dielectric or finitely conducting bodies can be reduced to the solution of integral equations. In the simpler...

Developing Data and Database Standards in Science: Some Challenges and How CODATA Can Help Meet Them

July 1, 1999

Author(s)

J R. Rumble

The triple revolutions caused by advanced computers, advanced informatics and the Internet have changed forever the way scientific and technical data are stored...

Thin-Film Calibration Wafer Materials for RTP Temperature Measurement

July 1, 1999

Author(s)

Kenneth G. Kreider, John G. Gillen

We are developing an instrumented calibration wafer for radiometric temperature measurements that uses thin-film thermocouples to minimize the thermal...

Errors and Uncertainties in Radar Cross Section Measurements

July 1, 1999

Author(s)

Lorant A. Muth, Robert T. Johnk, D. F. Novotny

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...

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...

Electron Collision Cross Sections Derived from Critically Assessed Data

July 1, 1999

Author(s)

Loucas G. Christophorou, James K. Olthoff

Electron-molecule collisions are among the most fundamental processes in gas discharges. They are also the precursors of the ions and the radicals which drive...

Negative Ion-Neutral Reactions in Townsend Discharges

July 1, 1999

Author(s)

James K. Olthoff, MVVS. Rao

Relative intensities and translational ion-flux energy distributions are presented for negative ions sampled from Townsend discharges in O 2, SF 6, and CF 4 for...

Cryogenic Microcalorimeters for X-Ray Microanalysis

July 1, 1999

Author(s)

David A. Wollman, Gene C. Hilton, Kent D. Irwin, Norman F. Bergren, David A. Rudman, Dale Newbury, John M. Martinis

The Co-Conical Field Generation System - A 40 GHz Antenna Calibration Cell

July 1, 1999

Author(s)

David R. Novotny, Arthur Ondrejka, Robert T. Johnk

A prototype test cell for generating standard fields suitable for antenna calibrations from DC to 40 GHz has been developed and tested.

Far-Field Antenna Patterns Determined from Infrared Holograms

July 1, 1999

Author(s)

Carl F. Stubenrauch, J. D. Norgard, J. E. Will, Katherine MacReynolds

In this paper, we describe a technique based on optical holography which allows determination of the amplitude and phase of an unknown antenna on a near-field...

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...

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...

Variation in Optical Disc Birefringence Measurements

July 1, 1999

Author(s)

Kent B. Rochford, S. T. Kreger, John W. West

A Comparison of 1 T-omega and 10 T-omega High Resistance Standards Between NIST and Sandia

July 1, 1999

Author(s)

Dean G. Jarrett, Ronald F. Dziuba, Marlin E. Kraft

Development of a Hazard-Based Method for Evaluating the Fire Safety of Passenger Trains

June 29, 1999

Author(s)

Richard W. Bukowski, Richard D. Peacock, Paul A. Reneke, Jason D. Averill, S. H. Markos

The fire safety of U.S. passenger rail trains currently is addressed through small-scale flammability and smoke emission tests and performance criteria...

Evaluating Multi-Sensor Fire Detectors in the Fire Emulator/Detector Evaluator

June 29, 1999

Author(s)

Thomas G. Cleary, Michael D. Anderson, Jason D. Averill, William L. Grosshandler

NIST has developed the Fire Emulator/Detector Evaluator (FE/DE) for the purpose of testing detectors in a controlled environment. The FE/DE is a flow tunnel...

On the Design of an Apparatus for Screening Liquid Fire Suppressants

June 29, 1999

Author(s)

Jiann C. Yang, Michelle K. Donnelly, N C. Prive, William L. Grosshandler

This paper discusses the design and use of an apparatus for evaluating the effectiveness of liquid fire suppression agents as possible replacements for halon...

A Fine-Grained, Detailed, Synchronized Measurement Toolkit for Web Client-Server Performance

June 28, 1999

Author(s)

D C. Tang, Francis W. Wang, X He

A hybrid measurement application of the Apache/Linux Measurement Toolkit (ALMT) and the MultiKron_II system performance chip was developed to create a fine...

Detector-Based Integrating Sphere Photometry

June 24, 1999

Author(s)

Yoshihiro Ohno, Yuqin Zong

A new luminous flux calibration facility using a 2.5 m integrating sphere has been developed at NIST. The Absolute Integrating-Sphere Method, developed for...

Status Report on the Development of the Interoperable MPI Specification

June 15, 1999

Author(s)

William L. George, John G. Hagedorn, J E. Devaney

An industry lead effort to create a protocol for the interoperation of MPI (Message Passing Interface) implementations has been ongoing since March of 1997...

The Apache/Linux Measurement Toolkit (ALMT) Using NIST-Developed Chip

June 15, 1999

Author(s)

D C. Tang, J H. Lin

This paper describes the development of the Apache-Linux Measurement Toolkit (ALMT), which is a highly accurate measurement tool for evaluating the performance...

Dynamic Load Balancing for Data-Parallel MPI Programs

June 14, 1999

Author(s)

William L. George

This paper describes the dynamic load-balancing support available in DParLib, a library of MPI-basedroutines that support the data-parallel style of programming...

Survivability of SONET/WDM Ring Networks with Optimum Number of Spare Components and Wavelengths

June 8, 1999

Author(s)

T D. Ndousse, L E. Hester, S P. Kumar, David H. Su

This paper addresses the optimization and performance of survivability strategies used in the next generation of high-capacity optical transport networks based...

Network-Diffused Media Scaling for Multimedia Content Services

June 7, 1999

Author(s)

O E. Kia, J J. Sauvola, D Doermann

In this paper we propose a new approach to address multimedia consumption schedule for hybrid networks and terminals having variable amount of resources. The...

The DLMF Project: A New Initiative in Classical Special Functions

June 1, 1999

Author(s)

Daniel W. Lozier

NIST (formerly, National Bureau of Standards) has started an ambitious project that aims to produce a successor to Abramowitz and Stegun's {\em Handbook of...

Energy Impacts of Infiltration and Ventilation in U.S. Office Buildings Using Multizone Airflow Simulation

June 1, 1999

Author(s)

Andrew K. Persily, Steven J. Emmerich

With exception of a few analyses of the impacts of ANSI/ASHRAE Standard 62-1989 and energy use in specific buildings, the energy used in commercial buildings...

Estimating the 95th Percentile of the Paste-Void Spacing Distribution in Hardened Cement Paste Containing Air Entrainment

June 1, 1999

Author(s)

Kenneth A. Snyder

The spacing equations of Powers, Philleo, and Pleau and Pigeon are used to estimate the uniform thickness of paste surrounding entrained air voids that is...

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