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Conferences

Ultrasound Power Measurement Techniques at NIST

November 12, 1995

Author(s)

Steven E. Fick

Megahertz-frequency sound waves with submillimeter wavelengths are widely used to probe the interior regions of many types of structures. When human tissues are...

The NIST Metrology Program on Electromagentic Characterization of Materials

November 1, 1995

Author(s)

Claude Weil

A Comparison of K-Correction and Taylor-Series Correction for Probe-Position Errors in Planar Near-Field Scanning

November 1, 1995

Author(s)

Michael H. Francis

Optoelectronics at NIST

November 1, 1995

Author(s)

Gordon W. Day

This document contains summaries of projects at NIST in which optoelectronics plays an important role. The document is intended to encourage more coordination...

Polarimetric Calibration of Reciprocal-Antenna Radars

November 1, 1995

Author(s)

Lorant A. Muth, R L. Lewis, Ronald C. Wittmann

Planar Near-Field Measurements and Microwave Holography for Measuring Aperture Distribution on a 60 GHz Active Array Antenna

November 1, 1995

Author(s)

Jeffrey R. Guerrieri, Seturnino Canales, Katherine MacReynolds, Douglas T. Tamura

Electrohydrodynamic Instability and Electrical Discharge Initiation in Hexane

November 1, 1995

Author(s)

Ken L. Stricklett, R A. Altafim

Motion-Model-Based Boundary Extraction

November 1, 1995

Author(s)

H Liu, Tsai H. Hong, Martin Herman, Rama Chellappa

Motion boundary extraction and optical flow computation are two subproblems of the motion recovery problem that cannot be solved independently of each other...

Accurate Zero-Dispersion Wavelength Measurements in Single-Mode Fibers: Two Frequency-Domain Methods

November 1, 1995

Author(s)

S. E. Mechels, John B. Schlager, Douglas L. Franzen

Spatio-Temporal Filters for Transparent Motion Segmentation

October 25, 1995

Author(s)

H Liu, Tsai H. Hong, Martin Herman, Rama Chellappa

Vision

Suppression Criteria in Engine Nacelle Fires

October 21, 1995

Author(s)

Anthony P. Hamins, Thomas G. Cleary

A series of experimental measurements were conducted and simple models were developed in an effort to provide an improved understanding of the influence of...

Storage and Discharge Characteristics of Halon Alternatives

October 21, 1995

Author(s)

Jiann C. Yang, Thomas G. Cleary, I Vazquez, C I. Boyer, M D. King, B D. Breuel, Marcia L. Huber, L Weber

Three important issues regarding the use of halon alternatives for in-flight fire protection applications were studied as part of the current halon alternative...

Spin Squeezing Applied to Frequency Standards

October 16, 1995

Author(s)

John J. Bollinger, David J. Wineland, Wayne M. Itano, D J. Heinzen

Effect of CF3H and CF3Br on Laminar Diffusion Flames in Normal and Microgravity

October 16, 1995

Author(s)

B. A. VanDerWege, M T. Bush, S Hochgreb, Gregory T. Linteris

Due to the ban on production of bromotrifluoromethane (CF3Br) because of its high ozone destruction potential, there has been recent interest in finding a...

Evaluating Spatial Correspondence of Zones in Document Recognition Systems

October 10, 1995

Author(s)

Michael D. Garris

Electrical Measurements of Microwave Flip-Chip Interconnections

October 1, 1995

Author(s)

Roger Marks, Jeffrey A. Jargon, C. K. Pao, C. P. Wen

Abstract: We apply custom calibration standards and software to the accurate on-wafer measurement of components on flip-chip coplanar-waveguide MM ICs. We...

A 30 MHz Comparison Receiver

October 1, 1995

Author(s)

Jeffrey A. Jargon

Coaxial Line-Reflect-Match Calibration

October 1, 1995

Author(s)

Jeffrey A. Jargon, Roger Marks, Dylan F. Williams

We describe a coaxial line-reflect-match calibration that corrects for imperfections in the load used as a match standard. The method provides a practical means...

Integration of Sensor Feedback and Teleoperation into an Open-architecture Standard

October 1, 1995

Author(s)

John L. Michaloski, P Backes, Ronald Lumia

Behavior of Surface Partial Discharge on Aluminum Oxide Dielectrics

October 1, 1995

Author(s)

P. Von, Richard J. Van Brunt, T. Las

Gaseous Dielectrics Research: Possible SF6 Substitutes

October 1, 1995

Author(s)

Loucas G. Christophorou, Richard J. Van Brunt

Simulation and Implementation of an Open Architecture Controller

October 1, 1995

Author(s)

Frederick M. Proctor, William P. Shackleford, Charles W. Yang

The National Institute of Standards and Technology (NIST) has developed a modular definition of components for machine control, and a specification to their...

Accurate Measurements of Zero-Dispersion Wavelength in Single-Mode Fibers

September 25, 1995

Author(s)

S. E. Mechels, Douglas L. Franzen

Calculating Combined Buoyancy- and Pressure-Driven Flow Through a Shallow, Horizontal, Circular Vent; Application to Problem of Steady Burning in a Ceiling-Vented Enclosure.

September 10, 1995

Author(s)

Leonard Y. Cooper

A model was developed previously for calculating combined buoyancy- and pressure-driven (i.e., forced) flow through a shallow, circular, horizontal vent where...

Acetylene Air Diffusion Flame Computations: Comparison of State Relations Versus Finite Rate Kinetics

September 10, 1995

Author(s)

Z Zhang, O A. Ezekoye

Fire propagation is driven by the coupling of heat and mass transfer processes between the gaseous and the condensed phases. A significant portion of the heat...

Inhibition of Premixed Methane-Air Flames by Halon Alternatives

September 10, 1995

Author(s)

Gregory T. Linteris, L Truett

Halogenated hydrocarbons are effective and widely used as fire suppressants. Because of their suspected destruction of stratospheric ozone, however, the...

Computing the Effect of Sprinkler Sprays on Fire Induced Gas Flow

September 10, 1995

Author(s)

Glenn P. Forney, Kevin B. McGrattan

Over the last twenty years there has been much debate concerning the interaction of sprinklers and draft curtains in large storage facilities. At issue is...

Heat Transfer in an Intumescent Material Using a Three-Dimensional Lagrangian Model

September 10, 1995

Author(s)

Kathryn M. Butler, Howard R. Baum, Takashi Kashiwagi

The addition of heat transfer calculations to a three-dimensional, time-dependent numerical model of intumescent materials is described. Intumescent materials...

Scaling Compartment Fires - Reduced- and Full-Scale Enclosure Burns.

September 10, 1995

Author(s)

Nelson P. Bryner, Erik L. Johnsson, William M. Pitts

An extensive series of over 140 natural gas fires in a 2/5ths-scale model of a standard room has been previously reported. This work extends the earlier reduced...

Modeling Smoke Flow in Corridors

September 10, 1995

Author(s)

D W. Stroup, Daniel M. Madrzykowski

The Public Buildings Service (PBS) within the General Services Administration (GSA) is the Federal government's real property manager responsible for the...

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