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Displaying 11226 - 11250 of 17277

Towards Operational Use of Unit Manufacturing Process Models

July 25, 2019
Author(s)
Amogh Kulkarni, William Z. Bernstein, David Lechevalier, Daniel Balasubramanian, Gabor Karsai, Peter O. Denno
Unit Manufacturing Processes (UMP) are models that capture succinct definitions of individual manufacturing steps in a manufacturing system. They are used to facilitate model composition and reuse. However, mainly due to their textual nature, they are

New measurement of the Boltzmann constant k by acoustic thermometry of helium-4 gas

September 11, 2017
Author(s)
Laurent Pitre, Fernando Sparasci, Michael R. Moldover, Cecile Guianvarch, Catherine Martin, Martin Himbert, Mark Plimmer, James B. Mehl, Giuliano Albo, Bo Gao, Lara Risegari
The SI unit of temperature will soon be redefined in terms of a fixed value of the Boltzmann constant k derived from an ensemble of measurements worldwide. We report on a new determination of k using acoustic thermometry of helium-4 gas in a 3-litre quasi

Research & Development Program for the Safety of Threatened Buildings

February 19, 2017
Author(s)
William L. Grosshandler
… and property can be staggering. The National Institute of Standards and Technology (NIST) throughout its history has … that supports improvements to building and fire codes, standards, and practices that reduce the impact of …

Verification and Validation of CFAST, A Model of Fire Growth and Smoke Spread

February 19, 2017
Author(s)
Walter W. Jones, Richard D. Peacock, Glenn P. Forney, Paul A. Reneke
CFAST is a zone model capable of predicting the environment in a multi-compartment structure subjected to a fire. It calculates the time evolving distribution of smoke and fire gases and the temperature throughout a building during a user-specified fire

INDOOR ENVIRONMENTAL RESILIENCE: A REVIEW AND DISCUSSION

July 19, 2015
Author(s)
Andrew K. Persily, Steven J. Emmerich
… paper summarizes a longer review of existing information, standards, programs and other technical resources related to … important gaps requiring research, and needs for standards and guidance. …

Advanced Metering Infrastructure Smart Meter Upgradeability Test Framework

March 2, 2015
Author(s)
Michaela Iorga, Scott Shorter
As electric utilities turn to Advanced Metering Infrastructures (AMIs) to promote the development and deployment of the Smart Grid, one aspect that can benefit from standardization is the upgradeability of Smart Meters. The National Electrical

Metrology Needs for Metal Additive Manufacturing Powders

January 29, 2015
Author(s)
John A. Slotwinski, Edward Garboczi
Additive manufacturing (AM) processes are capable of producing highly complex and customized parts, without the need for dedicated tooling, and can produce parts directly from the part design information. These types of processes are poised to

VIRTUAL FACTORY REVISITED FOR MANUFACTURING DATA ANALYTICS

December 11, 2014
Author(s)
Sanjay Jain, Guodong Shao
… communication, and integration and in associated standards have made the vision of a virtual factory within … is proposed that leverages the current technology and standards to help identify the developments needed for its …

Microwave Determination of the Volume of a Pressure Vessel

December 9, 2014
Author(s)
Michael R. Moldover, James W. Schmidt, Keith A. Gillis, James B. Mehl, John D. Wright
Using microwave techniques that are scalable to very large volumes, we measured the interior volume of a 0.3 m 3, commercially-manufactured, pressure vessel with an uncertainty of 0.05 %, as confirmed by independent, more-accurate, gas-expansion

A Cybersecurity Testbed for Industrial Control Systems

October 9, 2014
Author(s)
Richard Candell, Keith A. Stouffer, Dhananjay Anand
… The National Institute of Standards and Technology (NIST) is developing a cybersecurity … in accordance with practices prescribed by prevailing standards and guidelines. This paper outlines the testbed …

A SMALL-SAMPLE, BI-DIRECTIONAL SCATTERING MEASUREMENT SYSTEM FROM 200-500 GHz

October 26, 2012
Author(s)
David R. Novotny, Josh Gordon, Edwin J. Heilweil, Brian C. Stillwell, Jeffrey R. Guerrieri, Erich N. Grossman, Shu Z. Lo
Beginning the fall of 2012, NIST will be providing scattering measurements for other government agencies. We present performance results of a bi-directional scattering measurement system in the 200-500 GHz range. The goal is to provide dense-spectrum, bi

Concrete Model Building Subtypes

September 30, 2010
Author(s)
William T. Holmes
This study was conducted by the National Institute of Building Sciences Building Seismic Safety Council (BSSC). The goal was to develop standardized categories for older concrete buildings that incorporate more detail than those included in the standard
Displaying 11226 - 11250 of 17277
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