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Displaying 301 - 325 of 3845

Modeling Building Access Control with BACnet

February 19, 2017
Author(s)
Stephen J. Treado, S Cook, Banty Jain, Michael Galler
This report describes a typical implementation of a building access control system integrated with other portions of a building automation system, using some of the newly developed features of BACnet. This functionality has been implemented in the NIST

Modeling, Measurement, and Standards for Wafer Inspection

February 19, 2017
Author(s)
George Mulholland, Thomas A. Germer, J C. Stover
The major technical issues regarding the calibration of Surface Scanning Inspection Systems (SSIS) are presented including descriptions of the salient features of SSISs and the deposition system using the differential mobility analyzer. The role of the

Moment Method for Obtaining Particle Size Measures of Test Smokes

February 19, 2017
Author(s)
Thomas Cleary, D W. Weinert, George Mulholland
The number concentration, ionization chamber output, and mass concentration were recorded continuously for five different test smokes generated in the fire emulator/detector evaluator. The number and the mass concentrations are direct measures of the

New Fire Retardant Nanocomposites

February 19, 2017
Author(s)
Takashi Kashiwagi
This is a chapter of a proposed book. This chapter reviews the progress of flammability of new type of polymer nanocomposites based on nanosilica particles, polyhedral oligometric silsequixanes (POSS), graphite, and carbon nanotubes. Three different types

NIST Calibration Facility for Sizing Spheres Suspended in Liquids

February 19, 2017
Author(s)
Michelle K. Donnelly, George Mulholland, Michael R. Winchester
A calibration facility has been developed to measure the peak diameter of particles suspended in liquid using differential mobility analysis (DMA). A description of the facility and the features that contribute to measurements with low uncertainties is

NIST Research in Autonomous Construction

February 19, 2017
Author(s)
Alan M. Lytle, Kamel S. Saidi
The National Institute of Standards and Technology Construction Metrology and Automation Group is conducting ongoing research to provide standards, methodologies, and performance metrics that will assist the development of advanced systems to automate

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
Displaying 301 - 325 of 3845