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Displaying 401 - 425 of 3901

NIST Research in Crane AutomationA 2007 Overview

February 19, 2017
Author(s)
Kamel S. Saidi, Alan M. Lytle
The National Institute of Standards and Technology (NIST) has been conducting research in crane automation since the mid 1980 s. A robotic crane (RoboCrane) based on an inverted, cable actuated Stewart-Gough platform principle was invented at NIST at that

NIST: A Century in the Business of Fire Safety

February 19, 2017
Author(s)
Richard Gann
This year, the National Institute of Standards and Technology (NIST), formerly the National Bureau of Standards (NBS), turned 100 years old. During that century, NBS/NIST measurement technology has done much to enable the business of fire safety. Today

North American Standards and Specifications for Portland Cement

February 19, 2017
Author(s)
J H. Pielert, G J. Frohnsdorff
The earliest work in the United States on the development of portland cement standards was conducted by the American Society of Civil Engineers in the late 1800s. ASTM and the Federal government joined the effort in the early 1900s and ASTM C9 American

Numerical Modeling of Fire Spread Through Individual Trees and Shrubs

February 19, 2017
Author(s)
William E. Mell, Samuel Manzello, Alexander Maranghides
Fire spread through suspended vegetation, such as tree crowns, is a basic component of wildland fires. Most models of fire spread do not resolve the burning of individual trees. Instead, fire spread through a forest canopy, representing a collection tree

On the Aeroelastic Indifference of Brancusi s Endless Column

February 19, 2017
Author(s)
Rene D. Gabbai
Brancusi s Endless Column (T rgu-Jiu, Romania) is an interesting case study in bluff body aeroelasticity. It has been referred to as aeroelastically indifferent owing to its remarkable aeroelastic stability with respect to galloping. The column s behavior

On the Aeroelastic Indifference of Brancusi's Endless Column

February 19, 2017
Author(s)
Rene D. Gabbai
Brancusi s Endless Column (T rgu-Jiu, Romania) has been referred to as aeroelastically indifferent owing to its remarkable aeroelastic stability. The column s behavior has been attributed to its unconventional shape. However, calculations presented here

Performance Evaluation of a 3D Imaging System for Vehicle Safety

February 19, 2017
Author(s)
Alan M. Lytle, Sandor S. Szabo, Geraldine S. Cheok, Kamel S. Saidi, Richard J. Norcross
The NIST Construction Metrology and Automation Group (CMAG), in cooperation with the NIST Intelligent Systems Division (ISD), is developing performance metrics and standard tests for the evaluation of 3D imaging systems used in autonomous mobility

Planning Buildings that will Last

February 19, 2017
Author(s)
G J. Frohnsdorff, H Davies
In designing a building that will perform reliably over a specified time, a designer needs a vast amount of information about the performance of the available materials and components (hereafter referred to, collectively, as maerials) in the likely service

Plant Spatial Configuration Application Protocol. Edition 2

February 19, 2017
Author(s)
Mark E. Palmer, M Gilbert, B F. Gischer
This document specifies the ISO 10303 application protocol (AP) Edition 2 for the exchange of spatial configuration information of process plants, plant systems and ship systems. This includes shape characteristics, spatial arrangement characteristics, and

Probability Distributions of Extreme Wind Speeds in Thunderstorm Prone Regions

February 19, 2017
Author(s)
Franklin T. Lombardo, Emil Simiu
A recently developed capability allows the routine creation, from National Weather Service Automated Surface Observing System (ASOS) records, of separate sets of extreme non-thunderstorm and thunderstorm wind speeds. Using such records it is possible to

Proceedings of the Automated Steel Construction Workshop June 6-7, 2002

February 19, 2017
Author(s)
Alan M. Lytle, Kamel S. Saidi
The Building and Fire Research Laboratory of the National Institute of Standards and Technology, in cooperation with the American Institute of Steel Construction, sponsored a workshop on automated steel construction on June 6-7, 2002, at the NIST

Protocol for Testing Mattress/Foundation Sets Using a Pair of Gas Burners

February 19, 2017
Author(s)
Thomas J. Ohlemiller
A dual burner apparatus has been developed for the purpose of assessing the flammability of a mattress/foundation combination in a manner that correlates with its real world fire behavior. This document sets out the detailed procedure for employing this

Quality Cement and Concrete - The Role of Testing Laboratories

February 19, 2017
Author(s)
J H. Pielert
Field inspection (including sampling) and laboratory testing of concrete and concrete-making materials are key activities ensuring that constructed facilities are durable and long lasting. Standards which promote the quality of testing are prepared by ASTM

Reactive Molecular Dynamics Simulations of the Thermal Degradation of Polymers: Comparison to Experimental Measurements

February 19, 2017
Author(s)
Marc R. Nyden, Stanislav Stoliarov, R Lyon, C S. Jee, Z X. Guo, P R. Westmoreland, Vadim D. Knyazev
The results of reactive molecular dynamics simulations of the thermal degradation of several polymers, poly(isobutylene), poly(methyl methacrylate), and poly(bisphenol A carbonate), are compared to experimental measurements of product distributions and
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