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Displaying 56426 - 56450 of 74214

Guidelines for the Development of Mapping Tables

October 1, 1995
Author(s)
Allison Barnard Feeney, D Craig
The Standard for the Exchange of Product Model Data (STEP) is being developed under the auspices of the International Organization for Standardization (ISO) Technical Committee 184 (SC4). A principle feature of the STEP architecture is that it has two

Ouch Those Programs are Painful

October 1, 1995
Author(s)
Don E. Libes
Expect is a program to control interactive applications. These applications interactively prompt and expect auser to enter keystrokes in response. By using Expect, you can write simple scripts to automate theseinteractions. And using automated interactive

Self-focused Light Propagation in a Fully Saturable Medium: Theory

October 1, 1995
Author(s)
Marla L. Dowell, B D. Paul, Alan Gallagher, J W. Cooper
We report observations of self-focusing and filamentation of ~3 ns laser pules in strontium (Sr) vapor. The expermental arrangement consits of a Sr vapor cell and a pulsed Nd:YAG pumped dye laser tuned to the blue of the 461 nm transition in Sr. The

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 interfaces, with broad application to robots, machine tools, and coordinate measuring machines

The NIST SIMA Interactive Management Workshop

October 1, 1995
Author(s)
Clarence Johnson, Simon P. Frechette, Mark E. Luce
The Manufacturing Systems Integration Division (MSID) hosted a workshop November 14-16, 1994, on Systems Integration for Manufacturing Applications (SIMA). The workshop was held at the Defense Systems Management College (DSMC) in Fort Belvoir, Virginia. A

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 whether or not the two fire protection systems are mutually beneficial. It has been suggested that in

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 protect an underlying substrate from fire through endothermic chemical reactions producing

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 production of these agents, the most popular being halon 1301 (CF3Br), has been discontinued. There

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 acquisition, design, construction, and operation and management of various types of space for Federal

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-scale enclosure (RSE) study to a full-scale enclosure (FSE) and focuses on comparing the gas

Suppression of Ignition Over a Heated Metal Surface

September 10, 1995
Author(s)
Anthony P. Hamins, P. Borthwick, Cary Presser
The objective of this work is to investigate the effectiveness of various agents in suppressing flame ignition. Experiments were conducted to determine the amount of agent needed to suppress the ignition of a gaseous propane flow over a heated metal disk

Nanofabrication of a Two-Dimensional Array Using Laser-Focused Atomic Deposition

September 4, 1995
Author(s)
R Gupta, Jabez J. McClelland, Zeina J. Kubarych, Robert Celotta
Fabrication of a two-dimensional array of nanometer-scale chromium features on a silicon substrate by laser-focused atomic deposition is described. Features 13plus or minus}1 nm high and having a full-width at half maximum of 80plus or minus}10 nm are
Displaying 56426 - 56450 of 74214
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