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Displaying 32426 - 32450 of 73697

A Virtual Manufacturing Environment for Interoperability Testing

May 1, 2007
Author(s)
Charles R. McLean, Sanjay Jain, Andreas Craens, Deogratias Kibira
Studies have documented the high cost of the lack of software interoperability on manufacturing. New interface standards are being developed by various organizations to address interoperability issues. Unfortunately these standards often overlap and

Biophotonic tools in cell and tissue diagnostics

May 1, 2007
Author(s)
Michael Brownstein, Robert A. Hoffman, Richard Levenson, Thomas E. Milner, Marla L. Dowell, Paul A. Williams, Grady S. White, Adolfas Gaigalas, Jeeseong C. Hwang
In order to maintain the rapid advance of biophotonics in the U.S. and to enhance our competitiveness worldwide, key measurement tools must be in place. As a part of a wide-reaching effort to improve the U.S. technology base, the National Institute of

Capacitors and Electromagnetic Resonators for Gas Metrology

May 1, 2007
Author(s)
Michael R. Moldover, James W. Schmidt
Gas-filled capacitors are being used as primary thermometers and they show promise as primary pressure standards and for measuring the Boltzmann constant. With these metrological applications in mind, we discuss the advantages and disadvantages of audio

Coherent optical link over hundreds of metres and hundreds of terahertz with subfemtosecond timing jitter

May 1, 2007
Author(s)
Ian R. Coddington, William C. Swann, Luca Lorini, J. C. Bergquist, K Feder, Y. Le Coq, Jeffrey W. Nicholson, C. W. Oates, Qudsia Quraishi, Paul S. Westbrook, Scott Diddams, Nathan R. Newbury
Recent developments in stabilized lasers have resulted in ultrastable optical oscillators with spectral purities below 1 Hz refs 1-6. These oscillators are not transportable at present and operate at a single frequency. To realize their full potential, a

Creating Focus: Augmented Reality for Better Standards

May 1, 2007
Author(s)
Matthew L. Aronoff
Successful collaborative engineering depends on clear communication between all members of the development process. As that communication becomes more and more complex -- including not only textual descriptions, but CAD models, diagnostic data, process

Flow Control Through the Use of Topography

May 1, 2007
Author(s)
David Cotrell, Anthony J. Kearsley
In this work, optimal shaft shapes for flow in the annular space between a rotating shaft with axially-periodic radius and a fixed coaxial outer circular cylinder are investigated. Axisymmetric steady flows in this geometry are determined by solving the

Nanostructured, multifunctional tribological coatings

May 1, 2007
Author(s)
In-Wook Park, Jianliang Lin, William C. Moerbe, Brajendra Mishra, John J. Moore, Jennifer Anton, William D. Sproul, Kwang Ho Kim, Audrey A. Vooevodin, Evgeny A. Levashov
A number of multicomponents, nanostructured coatings have been produced for a range of tribological applications. This paper will discuss four such nanocomposite coating systems: (i) Ti-Si-B-C-N; (ii) Cr-B-N; (iii) TiC-C and (iv) Cr-Al-N produced by

Open Architecture Software Design for Online Spindle Health Monitoring

May 1, 2007
Author(s)
Kang B. Lee, Robert Gao, Ruqiang Yan, Li Zhang
This paper presents open systems architecture-based software design for an online spindle health monitoring system. The software is implemented using the graphical programming language of LabVIEW, and presents the spindle health status in two types of

Optimization of Finned-Tube Condensers Using an Intelligent System

May 1, 2007
Author(s)
Piotr A. Domanski, David A. Yashar
The refrigerant circuitry influences a heat exchanger s attainable capacity. Typically, a design engineer specifies a circuitry and validates it using a simulation model or laboratory test. The circuitry optimization process can be improved by using

Smart Transducer Web Services Based on the IEEE 1451.0 Standard

May 1, 2007
Author(s)
Yuyin Song, Kang B. Lee
This paper describes the proposed Smart Transducer Web Services (STWS) developed at the National Institute of Standard and Technology (NIST) based on the proposed IEEE 1451.0 standard. The Smart Transducer Web Services were described in WSDL (Web Service

Source Code Security Analysis Tool Functional Specification Version 1.0

May 1, 2007
Author(s)
Paul E. Black, Michael J. Kass, Hsiao-Ming M. Koo
Software assurance tools are a fundamental resource for providing an assurance argument for today?s software applications throughout the software development lifecycle. Some tools analyze software requirements, design models, source code, or executable

Surface Topography Analysis for a Feasibility Assessment of a National Ballistics Imaging Database

May 1, 2007
Author(s)
Theodore V. Vorburger, James H. Yen, B Bachrach, Thomas Brian Renegar, Li Ma, Hyug-Gyo Rhee, Xiaoyu Alan Zheng, Jun-Feng Song, Charles D. Foreman
This document reports on a study to determine the feasibility and utility of a national ballistics database of casing and bullet images. The purpose of such a proposed database would be to provide a reference collection of ballistic images against which

System identification approach applied to drift estimation

May 1, 2007
Author(s)
Tracy S. Clement, Frans Verbeyst, Rik Pintelon, Yves Rolain, Johan Schoukens
A system identification approach is applied to estimate the time base drift introduced by a high-frequency sampling oscilloscope. First, a new least squares estimator is proposed to estimate the delay of a set of repeated measurements in the presence 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

Thirty Years in Electromagnetic Compatibility: Projects and Colleagues

May 1, 2007
Author(s)
David A. Hill
Abstract?This paper is a review of my thirty years in electromagnetic compatibility and the projects and colleagues with whom I have had the pleasure of working. The field has evolved considerably over that time (and this evolution is continuing), and my
Displaying 32426 - 32450 of 73697
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