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 36401 - 36425 of 74045

Semantic Integration through Invariants

September 1, 2005
Author(s)
Michael Gruninger, J Kopena
A semantics-preserving exchange of information between two software applications requires mappings between logically equivalent concepts in the ontology of each application. The challenge of semantic integration is therefore equivalent to the problem of

Structural Fire Response and Probable Collapse Sequence of the World Trade Center Towers. Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-6) ***DRAFT for Public Comments***

September 1, 2005
Author(s)
John L. Gross, Therese P. McAllister
One of the four main objectives of the National Institute of Standards and Technology (NIST) investigation of the collapse of the World Trade Center (WTC) towers was to determine why and how the two towers collapsed. Events that played a significant role

Surface-Electrode Architecture for Ion-Trap Quantum Information Processing

September 1, 2005
Author(s)
J Chiaverini, Brad R. Blakestad, Joseph W. Britton, John D. Jost, C. Langer, Dietrich G. Leibfried, R Ozeri, David J. Wineland
We investigate a surface-mounted electrode geometry for miniature linear radio frequency Paul ion traps. The electrodes reside in a single plane on a substrate, and the pseudopotential minimum of the trap is located above the substrate at a distance on

Surface-Grafted Block Copolymer Gradients: Effect of Block Length on Solvent Response

September 1, 2005
Author(s)
Chang Xu, Tao Wu, J Batteas, Charles M. Drain, Kathryn L. Beers, Michael J. Fasolka
We outline a method to fabricate gradient combinatorial libraries that explore architectural parameters in surface-grafted block copolymers (BCs). In addition, we demonstrate the utility of such libraries for the rapid, thorough assessment of the response

Technical Documentation for Survey Administration: Questionnaires, Interviews, and Focus Groups. Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-7B) ***DRAFT for Public Comments***

September 1, 2005
Author(s)
Johanna Zmud
This report documents the methods and outcomes of the telephone survey, face-to-face interviews, and focus groups that were conducted in support of the federal building and fire safety investigation of the World Trade Center disaster. In total, 803

Uncertainties in Scaling Factors for ab Initio Vibrational Frequencies

September 1, 2005
Author(s)
Karl K. Irikura, Russell D. Johnson III, Raghu N. Kacker
Vibrational frequencies determined from ab initio calculations are often scaled by empirical factors. An empirical scaling factor partially compensates for the errors arising from vibrational anharmonicity and incomplete treatment of electron correlation

Ventilation Rates in U.S. Office BuildingsFrom the EPA Base Study

September 1, 2005
Author(s)
Andrew K. Persily, J Gorfain, Greg Brunner
The EPA BASE study involved indoor environmental measurements in 100 U.S. office buildings. This paper presents an analysis of the measured outdoor air ventilation rates, including comparisons with the requirements in ASHRAE Standard 62. The outdoor

Visual Evidence, Damage Estimates, and Timeline Analysis (Chapters 1-8). Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-5A) ***DRAFT for Public Comments***

September 1, 2005
Author(s)
William M. Pitts, Kathryn M. Butler, Valentine Junker
This report summarizes the collection and analysis of visual material used for the National Institute of Standards and Technology (NIST) World Trade Center (WTC) Investigation. The task consisted of four major subtasks: 1) identification, collection, data

Visual Evidence, Damage Estimates, and Timeline Analysis (NIST NCSTAR 1-5A)Chapter 9-Appendices A-M. Federal Building and Fire Safety Investigation of the World Trade Center Disaster

September 1, 2005
Author(s)
William M. Pitts, Kathryn M. Butler, Valentine Junker
This report summarizes the collection and analysis of visual material used for the National Institute of Standards and Technology (NIST) World Trade Center (WTC) Investigation. The task consisted of four major subtasks: 1) identification, collection, data

What We Think We Know About Ventilation

September 1, 2005
Author(s)
Andrew K. Persily
The amount of outdoor air provided to occupied spaces is one of the most important determinants of indoor air quality, but many critical questions and misunderstandings still exist regarding outdoor air ventilation. First, given the importance of
Displaying 36401 - 36425 of 74045
Was this page helpful?