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 31351 - 31375 of 74084

Correction of Location and Orientation Errors in Electromagnetic Motion Tracking

August 1, 2007
Author(s)
John G. Hagedorn, Steven G. Satterfield, John T. Kelso, W. Austin, Judith E. Terrill, Adele Peskin
We describe a method for calibrating an electromagnetic motion tracking device. Algorithms for correcting both location and orientation are presented. In particular, we use a method for interpolating rotation corrections at scattered data points that has

Demonstration of Real-Time Tactical Decision Aid Displays

August 1, 2007
Author(s)
William D. Davis, David G. Holmberg, Paul A. Reneke, L D. Brassell, R Vettori
On September 22, 2005 the National Institute of Standards and Technology (NIST) conducted a demonstration of two prototype tactical decision aid computer interfaces in the city of Wilson, North Carolina. Members of the City of Wilson Fire Department

Distributed Simulation - A Necessity or Ivory Tower Research?

August 1, 2007
Author(s)
Charles R. McLean
There is a growing need for the nation to be better prepared to deal with both man-made and natural disasters. The responses to the attacks on the World Trade Center and Hurricane Katrina are strong evidence of this need. Effective emergency response

Environmentally Acceptale Fire Extinguishants

August 1, 2007
Author(s)
J D. Mather, R E. Tapscott
Aircraft fire suppression applications inherently demanding performance requirements, made all the more challenging by low temperature conditions, physical inaccessibility, and high and possibly uncertain air flow conditions, have been historically

General Buildings Information Handover Guide

August 1, 2007
Author(s)
Kristine K. Fallon, Mark E. Palmer
The 2004 Construction Users Roundtable (CURT) report, Collaboration, Integrated Information, and the Project Life Cycle in Building Design, Construction and Operation (WP-1202), makes clear that there is a compelling need to improve project delivery

High Accuracy Dual Lens Transmittance Measurements

August 1, 2007
Author(s)
J Cheung, James Gardner, Alan L. Migdall, Sergey Polyakov, Michael Ware
We show how to determine the transmittance of short focal length lenses (f 19 mm, in this case) with an uncertainty of 1 part in 103 or better by measuring transmittances of lens pairs of a set of three or more lenses with the same nominal focal length

Key nonlinear measurement events

August 1, 2007
Author(s)
Catherine A. Remley, Dominique Schreurs
In this article, we describe two engineer-friendly events - the Automatic RF Techniques Group (ARFTG) Nonlinear Measurements Workshop and the Nonlinear Vector Network Analyzer (NVNA) Users' Forum - designed to let participants learn about and discuss

Microwave Power Absorption in Low-Reflectance, Complex, Lossy Transmission Lines

August 1, 2007
Author(s)
Jon Geist, Jayna J. Shah, Mulpuri Rao, Michael Gaitan
Simple sets of equations have been derived to describe the absorption of microwave power in threeregion, lossy transmission lines in terms of S-parameter reflection and transmission amplitudes. Each region was assumed to be homogeneous with discontinuities

Reference Viscosities of H 2 , CH 4 , Ar and Xe at Low Densities

August 1, 2007
Author(s)
E May, Robert F. Berg, Michael R. Moldover
We determined the zero-density viscosity eta of hydrogen, methane and argon in the temperature range 200 K to 400 K, with standard uncertainties of 0.084 % for hydrogen and argon and 0.096 % for methane. These uncertainties are dominated by the uncertainty

State-of-the-Art Review for Commissioning Low Energy Buildings: Existing Cost/Benefit and Persistence Methodologies and Data, State of Development of Automated Tools and Assessment of Needs for Commissioning ZEB

August 1, 2007
Author(s)
Marti Frank, Hannah Friedman, Kristin Heinemeier, Cory Toole, David Claridge, Natascha S. Milesi-Ferretti, Philip Haves
This report documents the findings of a review of the state of the art in the commissioning of low energy buildings. The purpose of this report is threefold: 1) To identify and assess existing methodologies for defining the costs and benefits of

Surface Grafting of Polypyrrole onto Silicon Wafers

August 1, 2007
Author(s)
Daeson Sohn, Hyoseung Moon, Michael J. Fasolka, Naomi Eidelman, Sang-Mo Koo, Curt A. Richter, Eun S. Park, Joseph Kopanski, Eric J. Amis
A micromolding technique in capillaries was adapted to make uniform patterns of polypyrrole (Ppy), and the conductivities of the patterns were measured by direct contact IV curves and conductance AFM methods. Noncovalently bound Ppy patterns have high

The ARFTG Nonlinear Measurements Workshop and NVNA Users Forum

August 1, 2007
Author(s)
Kate Remley, Dominique Schreurs
This paper introduces readers to two informal meetings where microwave engineers can learn techniques, share experiences, and discuss the latest research in nonlinear and large-signal measurements. The Automatic RF Techniques Group ,ARFTG, Nonlinear

The Sampling Oscilloscope as a Microwave Instrument

August 1, 2007
Author(s)
Dylan Williams, Paul D. Hale, Kate Remley
Many modern high-speed oscilloscopes are well suited for precise microwave waveform, modulated-signal, and nonlinear measurements. These oscilloscopes have bandwidths of up to 100 GHz and are available with nominally 50 ? input impedances. Like their low

Web Application Scanners: Definitions and Functions

August 1, 2007
Author(s)
Elizabeth N. Fong, Vadim Okun
There are many commercial software security assurance tools that claim to detect and prevent vulnerabilities in application software. However, a closer look at the tools often leaves one wondering which tools find what flaws? This paper identifies a

Wireless Sensor Network Based on IEEE 1451.0 and IEEE 1451.5-802.11

August 1, 2007
Author(s)
Kang B. Lee, Yuyin Song
This paper describes a wireless sensor network (WSN) based on the Institute of Electrical and Electronics Engineers (IEEE) s 1451.0, 1451.5, and 802.11 standards. The implementation of the IEEE-based WSN was developed at the National Institute of Standards

Workshop on the Evaluation of a Tactical Decision Aid Display

August 1, 2007
Author(s)
William D. Davis, R Vettori, Paul A. Reneke, L D. Brassell, David G. Holmberg, Jodi Kostecki, Jessica Kratchman
On July 26, 2005, the National Institute of Standards and Technology (NIST) conducted a workshop consisting of fire service and fire safety personnel that had two objectives. The first, was to give the attendees a presentation of the history and present
Displaying 31351 - 31375 of 74084