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 15076 - 15100 of 17286

Approaches to color rendering measurement

July 15, 2009
Author(s)
Wendy L. Davis, Yoshihiro Ohno
Color rendering refers to a light source’s ability to make the colors of illuminated objects appear natural or accurate. The Color Rendering Index (CRI) is currently the only internationally-standardized way to assess a light source’s color rendering

Thermodynamic and Thermophysical Properties of the Reference Ionic Liquid: 1-Hexyl-3-Methylimidazolium Bis[(Trifluoromethyl)Sulfonyl]amide (including mixtures). Part 1. Experimental Methods and Results

March 20, 2009
Author(s)
Kenneth N. Marsh, Joan F. Brennecke, Robert D. Chirico, Michael D. Frenkel, Andreas Heintz, Joe W. Magee, Cor J. Peters, Luis P. Rebelo, Kenneth R. Seddon
This article summarized the results of IUPAC Project 2002-005-1-100 (Thermodynamics of ionic liquids, ionic liquid mixtures, and the development of standardized systems). The methods used by the various contributors to measure the thermophysical and phase

Slap Fingerprint Segmentation Evaluation II - Procedures and Results

January 12, 2009
Author(s)
Craig I. Watson
In 2004, NIST conducted a fingerprint slap segmentation study [1] to assess the state-of-the-art in fingerprint segmentation technology. Given the development of new technology it has become necessary to reassess the current state-of-the-art of

Design and testing of a software feedback loop for RF power leveling

December 12, 2008
Author(s)
Xiaohai Cui, Thomas P. Crowley
We have developed a software feedback loop that stabilizes the RF power input in calorimetric measurements to better than 30 ppm. In this system, a bolometric sensor with a Type IV power meter is used to detect the power. Feedback is provided to the AM

Index of Retraction and its Temperature Dependence of Calcium Fluoride Near 157nm

October 16, 2008
Author(s)
John H. Burnett, Ulf Griesmann, R Gupta, T E. Jou
We have made accurate measurements near 157 nm of the relative index of refraction, its dispersion, and its temperature dependence for two grades of calcium fluoride in N 2 gas. Accurate measurements of the quantitites are needed for the design of lens

Nature Materials News and Views on T. Haxhimali et al

October 16, 2008
Author(s)
James A. Warren
Simulations of dendritic solidification by T. Haxhimali et al. [1] for a pure material and comparisons with experiments in an A1Zn alloy system have shown that a standard theoretical rule of thumb for predicting solidification growth forms can dramatically

Effects of Specimen Geometry on Fatigue-Crack Growth Rates in Pipeline Steels

September 29, 2008
Author(s)
John M. Treinen, Philippe P. Darcis, Joseph D. McColskey, R. Smith, J. Merritt
In this study, the effect of specimen geometry on the fatigue crack growth rates (FCGR) in API X65 and X100 pipeline steels was explored using the middle tension and compact tension specimen geometries. It was found that the specimen type has little

Performance Evaluation of Speech Translation Systems

May 28, 2008
Author(s)
Brian A. Weiss, Craig I. Schlenoff, Gregory A. Sanders, Michelle P. Steves, Sherri Condon, Jon Phillips, Dan Parvaz
… of the program and has tasked the National Institute of Standards and Technology (NIST) to lead this effort. This …

An Optical Fiber-Based Source of Polarization-Entangled Photon Pairs

September 10, 2007
Author(s)
Jingyun Fan, M D. Eisaman, Alan L. Migdall
We describe an achromatic, phase-stable, broadband source of polarization-entangled photon pairs with high spectral brightness that uses four-wave mixing in a fiber Sagnac interferometer. We achieved a polarization-entangled two-photon coincidence rate of

General Buildings Information Handover Guide

August 1, 2007
Author(s)
Kristine K. Fallon, Mark E. Palmer
… schedule and cost overruns. The National Institute of Standards and Technology (NIST) study Cost Analysis of …

Thermodynamic properties of methylquinolines: Experimental results for 2,6-dimethylquinoline and mutual validation between experiments and computational methods for methylquinolines

May 1, 2007
Author(s)
Robert D. Chirico, Russell D. Johnson III, William Steele
Measurements leading to the calculation of the standard thermodynamic properties for gaseous 2,6-dimethylquinoline (Chemical Abstracts registry number [877-43-0]) are reported. Experimental methods included adiabatic heat-capacity calorimetry, vibrating

ECBCS Annex 47: Cost-Effective Commissioning Research

November 20, 2006
Author(s)
Natascha S. Milesi-Ferretti, Hannah Friedman, Marti Frank
In 2005, the Executive Committee of the International Energy Agency s (IEA) Energy Conservation in Buildings and Community Systems (ECBCS) program approved the start of a new four-year research project on building commissioning. Annex 47, on Cost-Effective

Generalized Entanglement and Quantum Phase Transitions

July 30, 2006
Author(s)
Rolando Somma, Howard Barnum, Emanuel Knill, Gerardo Ortiz, Lorenza Viola
… a popular but dated resource, the National Bureau of Standards Handbook of Mathematical functions, published by …
Displaying 15076 - 15100 of 17286
Was this page helpful?