U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 31726 - 31750 of 73829

Supplementary Backward Equations for the Industrial Formulation IAPWS-IF97 of Water and Steam for Fast Calculations of Heat Cycles, Boilers, and Steam Turbines

November 12, 2007
Author(s)
H J. Kretzschmar, K Knobloch, K Miyagawa, Allan H. Harvey, Wolfgang Wagner
This Extended Abstract summarizes the various supplementary equations that have been developed by the International Association for the Properties of Water and Steam to improve the calculation speed of the industrial standard formulation IAPWS-IF97 for

Sources of Uncertainty for Near-Field Measurements

November 11, 2007
Author(s)
Michael H. Francis, Ronald C. Wittmann
We discuss the sources of uncertainty in near-field measurements and their impact on far-field antenna parameters. The methods of estimating these uncertainties can be considered in three broad categories: theoretical estimation (analytical), computer

Design of the HLPR ChairHome Lift Position and Rehabilitation Chair

November 9, 2007
Author(s)
Roger V. Bostelman, James S. Albus
This paper is a HLPR Chair (Home Lift, Position, and Rehabilitation Chair) design document that includes a brief introduction of the need for this technology and all the mechanical and electrical designs produced to date to build this technology.

Reverse Engineering the Brain

November 9, 2007
Author(s)
James S. Albus
Reverse engineering the brain will require a deep understanding of how information is represented and how computation is performed in the brain. What are the functional operations? What are the knowledge data structures? How are messages encoded? How are

A Novel Peak Detection Algorithm for Use in the Study of Machining Chip Segmentation

November 7, 2007
Author(s)
Eric P. Whitenton, Robert W. Ivester, Jarred C. Heigel
The study of how metal deforms and flows as parts are machined yields important insights into the metal cutting process. Improvements in high-speed digital imaging and image processing software promise to improve our understanding of the tool-workpiece

Content-Based Assembly Search: A Step Towards Assembly Reuse

November 7, 2007
Author(s)
Ram D. Sriram, A S. Deshmukh, A G. Banerjee, Satyandra K. Gupta
The increased use of CAD systems by product development organizations has resulted in the creation of large databases of assemblies. This explosion of assembly data is likely to continue in the future. In many situations, text-based search alone may not be

Advanced Technology for Fire Suppression in Aircraft

November 6, 2007
Author(s)
Richard G. Gann
In its decade of systematic research (1997-2006), the NGP revitalized the field of fire suppression science. The NGP arose as a result of a discovery that garnered the Nobel Prize for two accomplished chemists and legislation that turned science into

Influence of the Colloidal Environment on the Magnetic Behavior of Cobalt Nanoparticles

November 6, 2007
Author(s)
Guangjun Cheng, Cindi L. Dennis, Robert D. Shull, Angela R. Hight Walker
The magnetic properties of 10 nm cobalt (Co) nanoparticles in 1,2-dicholorbenenze (DCB) are investigated via a series of magnetization (M) vs. temperature (T) measurements. A rapid rise in magnetization around 250 K during warming and a sudden drop at 240

Planning User-Centered Evaluations for Interactive Information Visualizations

November 2, 2007
Author(s)
Yee-Yin Choong, Theresa O'Connell
This paper describes a user-centered methodology to evaluate innovative, complex interactive visualizations (IVs) developed for information analysis. Our research goal is to develop innovative evaluation methods and sensitive metrics to understand how

A Quantum Algorithm Detecting Concentrated Maps

November 1, 2007
Author(s)
Isabel M. Beichl, Stephen Bullock, David Song
We consider an arbitrary mapping for , some number of quantum bits. Using calls to a classical oracle evaluating and an classical bit data store, it is possible to determine whether is one-to-one. For some radian angle , we say is -concentrated iff for

BACnet at Georgia Tech

November 1, 2007
Author(s)
Donald Alexander, Cornelius Ejimofor, David Holmberg
The Van Leer building at Georgia Tech was selected for a pilot project to study the feasibility of using an RTP-based temperature setback approach to energy savings for the campus. Georgia Tech saved approximately 7000 kWh of power and $1000 using the RTP

BACnet Measures Up

November 1, 2007
Author(s)
Steven T. Bushby
BACnet was developed to enable integration of building automation and control products from multiple vendors and to allow building owners the freedom to by products based on price and performance, rather than compatibility with currently installed building

BACnetRG at Georgia Tech.

November 1, 2007
Author(s)
David G. Holmberg, D P. Alexander, C Ejimofor
Large facility owners generally negotiate yearly or multiyear electric service agreements and often are given lower base rates in exchange for sharing the risk of price fluctuations. This agreement may take the form of a capped rate, or may go as far as a

BACnetRG Measures Up.

November 1, 2007
Author(s)
Steven T. Bushby
The National Institute of Standards and Technology (NIST) has two campus facilities, the main one in Gaithersburg, MD, near Washington, D.C., and a smaller facility in Boulder, Colo. The Gaithersburg facility is 234 hectares (578 acres) and has more than

Characterization and Correction of Stray Light in Optical Instruments

November 1, 2007
Author(s)
Yuqin Zong, Steven W. Brown, G Meister, R Barnes, Keith R. Lykke
Improperly imaged, or scattered, optical radiation within an instrument is difficult to properly characterize and is often the dominant residual source of measurement error. Scattered light can originate from the spectral components of a point source and

Combinatorial Polymer Scaffold Libraries

November 1, 2007
Author(s)
Carl G. Simon Jr., J S. Stephens, Matthew Becker
We have developed a method for fabricating combinatorial libraries of porous, three-dimensional, salt-leached, polymer scaffolds that can be used for screening the effect of scaffold properties on cell response. Syringe pumps, tubing and a static mixer are

Comparison between NIST and AF laser energy standards using high power lasers

November 1, 2007
Author(s)
Xiaoyu X. Li, Thomas Scott, Christopher L. Cromer, David Cooper, Steven Comisford
We report the results of a high-energy laser calorimeter comparison conducted by the National Institute of Standards and Technology (NIST), Boulder, Colorado and the U.S. Air Force Primary Standard Laboratory (AFPSL), Heath, Ohio. A laser power meter, used
Displaying 31726 - 31750 of 73829
Was this page helpful?