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 37901 - 37925 of 74066

In-Situ Soft X-Ray Studies of CO Oxidation on the Pt(111) Surface

August 1, 2004
Author(s)
D J. Burnett, A T. Capitano, A M. Gabelnick, A L. Marsh, Daniel A. Fischer, J L. Gland
Temperature programmed and isothermal fluorescence yield measurements have been used to characterize carbon monoxide oxidation on the Pt(111) surface for oxygen pressures from 0.027 Pa to 2.7 Pa over the 200 to 600 K temperature range. Carbon monoxide

Information Security (IS) in the System Development Life Cycle (SDLC)

August 1, 2004
Author(s)
Ae-kyoung Lee, Tanya L. Brewer
Many system development life cycle (SDLC) models exist that can be used by an organization to effectively develop an information system. Security should be incorporated into all phases, from initiation to disposition, of an SDLC model. This Bulletin lays

Inputs and Outputs in PSL

August 1, 2004
Author(s)
Conrad Bock, Michael Gruninger
Inputs and outputs are ubiquitous in flow modeling, including popular programming languages. This paper examines how inputs and outputs can be formalized in the Process Specification Language (PSL) to reduce ambiguity and increase expressiveness compared

Making Cold Molecules by Time-Dependent Feshbach Resonances

August 1, 2004
Author(s)
Paul S. Julienne, Eite Tiesinga, T Kohler
Pairs of trapped atoms can be associated to make a diatomic molecule using a time dependentMagnetic field to ramp the energy of a scattering resonance state from above to below the scatteringthreshold. A relatively simple model, parameterized in terms of

Manufacturing Information Integration in Product Lifecycle Management (PLM)

August 1, 2004
Author(s)
Guixiu Qiao, Charles R. McLean
The research on manufacturing information integration in PLM calls for a new fundamental information technology to enable adaptive information representation and exchange between manufacturing applications. Four major problems are studied, including

Metric Mapping Concepts for TIA

August 1, 2004
Author(s)
Michelle P. Steves, Jean C. Scholtz
In this paper, we present a metrics framework and the underlying concepts that were used to help structure a series of evaluations of software tools to support intelligence workers with their data filtering and analytic processes. The deployment of the

Microfabricated Atomic Frequency References

August 1, 2004
Author(s)
Svenja A. Knappe, P Schwindt, V Shah, Leo W. Hollberg, John E. Kitching, Li-Anne Liew, John M. Moreland
We describe a design for a microfabricated atomic frequency reference with a volume of several cubic millimetres and a power dissipation in the range ot tens of milliwatts. It is anticipated that this frequency reference will be capable of achieving a

Mitigation Strategies for Autogenous Shrinkage Cracking

August 1, 2004
Author(s)
O M. Jensen
As the use of high performance concrete has increased, problems with early-age cracking have become prominent. The reduction in w/c ratio, the incorporation of silica fume, and the increase in binder content of high performance concretes all contribute to

Modeling Information for Manufacturing-Oriented Supply-Chain Simulation

August 1, 2004
Author(s)
Guixiu Qiao, Frank H. Riddick
This paper discusses a new approach that facilitates the use of simulation in supply chain applications, especially for manufacturing-related activities. A neutral information representation methodology, which is based on the eXtensible Markup Language

Near-Field Polarimetric Characterization of Polymer Crystallites

August 1, 2004
Author(s)
Lori S. Goldner, S N. Goldie, Michael J. Fasolka, F Renaldo, Jeeseong Hwang, Jack F. Douglas
We use near-field polarimetry (NFP) to investigate thin film crystallites of isotactic polystyrene (iPS). NFP micrographs enabled quantitative optical characterization of the birefringence in these specimens with sub-diffraction limited resolution

Optical Excitation and Absorption Spectra of C 50 Cl 10

August 1, 2004
Author(s)
Rui-Hua Xie, Garnett W. Bryant, J Cheung, V H. Smith, J Zhao
Recent experiment has synthesized C 50Cl 10 [S.Y. Xie et al., Science 304, 699 (2004)] in a large quantity capturing the labile fullerene C 50. In this Communication, we report ab initio calculations on the optical excitation and absorption spectra of C

Organogelators and Their Application in Dental Materials

August 1, 2004
Author(s)
Elizabeth Wilder, Janet Quinn, Joseph M. Antonucci
Dibenzylidene sorbitol (DBS) is an organic molecule capable of inducing physical gelation in a wide variety of organic solvents and polymer melts by forming three-dimensional networks. Recent efforts in this laboratory have found that DBS is capable of

PC Modeling and Simulation Guidelines: Volume 1 - Overview

August 1, 2004
Author(s)
Charles R. McLean, Frank H. Riddick
The Navy is preparing to make significant investments in personal computer (PC) simulation-based learning systems. Presenting learning material in various formats and taking advantage of multimedia technologies has been shown to greatly benefit the learner

PDA Forensic Tools: an Overview and Analysis

August 1, 2004
Author(s)
Richard Ayers, Wayne Jansen
Adequate user authentication is a persistent problem, particularly with mobile devices such as Personal Digital Assistants (PDAs), which tend to be highly personal and at the fringes of an organization's influence. Yet these devices are being used
Displaying 37901 - 37925 of 74066