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 43326 - 43350 of 74045

NDE of Concrete Structures Strengthened with FRP Using Infrared Thermography

July 1, 2002
Author(s)
M A. Starnes, Nicholas J. Carino, E A. Kausel
Numerical and experimental methods are used to investigate the effectiveness of infrared thermography to estimate the width of subsurface flaws in fiber-reinforce polymer (FRP) laminates bonded to concrete. The study focuses on establishing the potential

NIST Measurement Services That Support Optoelectronics

July 1, 2002
Author(s)
Sally S. Bruce, Christopher L. Cromer
The National Institute of Standards and Technology (NIST) offers a variety of hundreds of measurement services to its customers as a part of it's core mission. These services include reference data, reference materials, and physical measurements and

Nonreflecting Boundary Conditions for the Time-Dependent Wave Equation

July 1, 2002
Author(s)
Bradley K. Alpert, L Greengard, T Hagstrom
We describe a new, efficient approach to the imposition of exact nonreflecting boundary conditions for the scalar wave equation. We compare the performance of our approach with that of existing methods by coupling the boundary conditions to finite

Observation of Time-Dependent Inhibited Spontaneous Emission

July 1, 2002
Author(s)
D A. Branning, Alan L. Migdall
We present the results of an experiment to observe inhibited spontaneous emission of a parametric downconverter by an optical cavity whose switching time is short compared with the round trip time of the light.

Planning with Incrementally Created Graphs

July 1, 2002
Author(s)
Stephen B. Balakirsky, Otto H. Herzog
A framework for planning algorithms that is both optimal and complete will be presented that allows for the planning of optimal paths through a multi-level hierarchy of annotated graph spaces. A rich world model that contains multi-resolution attributes

Quantifying Usability: The Industry Usability Reporting Project

July 1, 2002
Author(s)
Jean C. Scholtz, Emile L. Morse, Sharon J. Laskowski, A Wishansky, K Butler
The paper describes the Common Industry format (CIF) developed in the Industry Usability Reporting Project (IUSR), which is now an ANSI standard. Four pilot studies conducted to verify the usefulness of the CIF are also described.

Quantitating Fluorescence Intensity From Fluorophores: Practical Use of MESF Values

July 1, 2002
Author(s)
Lili Wang, Adolfas K. Gaigalas, F Abassi, G E. Marti, R F. Vogt, A Schwarz
The present work uses fluorescein as the model fluorophore and points out critical steps in the use of MESF (Molecules of Equivalent Soluble Fluorophores) values for quantitative flow cytomeric measurements. It has been found that the emission spectrum

Quantitation of Polymer End Groups Using MALDI TOF MS

July 1, 2002
Author(s)
A P. Weaver, Charles M. Guttman, Kathleen M. Flynn
Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI TOF MS) has been employed to analyze polystryrene mixtures of molecular mass ca. 4000u. The component polymers of thes mixtures are identical except for their end groups

Rapid, Remote, Automated Card Sorting using WebCAT

July 1, 2002
Author(s)
Emile L. Morse
WebCAT is a rapid, remote, and automated method for performing card sorting. WebCAT, a tool from the NIST Web Metrics Testbed, provides a web-based interface for performing card sorting. Its three major parts are: interface for experimental design, drag

Reliability Improvements in Repair Welding of High Strength Steels

July 1, 2002
Author(s)
Ivan Samardzic, Thomas A. Siewert
Engineers often have to deal with repair of weldments after they have been put into service. Here, the concern is that the service environment may have changed the structure, indepent of whether the problems originated during the initial construction (cold

Responding to National Needs, 1994 - 2001: Supplement to Appendices

July 1, 2002
Author(s)
Diane Cunningham, P J. Deutsch, J M. Ives, S L. Kelley, Keith R. Martin, J V. Norris
Information contained in this document updates and expands the data presented in the Appendices of the report Responding to National Needs: The National Bureau of Standards Becomes the National Institute of Standards and Technology 1969-1994, by James F
Displaying 43326 - 43350 of 74045
Was this page helpful?