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Displaying 32651 - 32675 of 73929

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

Visualization and Modeling of Smoke Transport Over Landscape Scales

May 1, 2007
Author(s)
Glenn P. Forney, William E. Mell
Computational tools have been developed at the National Institute of Standards and Technology (NIST) for modeling fire spread and smoke transport. These tools have been adapted to address fire scenarios that occur in the wildland urban interface (WUI) over

Manipulation of the Vortex Motion in Nanostructured Ferromagnetic/Superconductor Hybrids

April 30, 2007
Author(s)
A V. Silhanek, W Gillijns, V V. Moshchalkov, V Metlushko, F Gozzini, B Ilic, Willard C. Uhlig, John Unguris
The authors investigate the rectified motion of vortices in superconducting films deposited on top of a close-packed array of open in-plane magnetized triangular micromagnets. The dc voltage induced by the vortex drift under an ac excitation is recorded

Metrics to Estimate Image Quality in Compressed Video Sequences

April 30, 2007
Author(s)
G O'Brien, S Israel, J Irvine, Charles D. Fenimore, John W. Roberts, Michelle Brennan, D Cannon, J Miller
A fundamental problem in image processing is to find objective metrics that parallel human perception of image quality. In this study, several metrics were examined to quantify compression algorithms in terms of perceived loss in image quality. In addition

Perceived Interpretability of Motion Imagery: Implications for Scale Development

April 30, 2007
Author(s)
J Irvine, G O'Brien, S Israel, Charles D. Fenimore, John W. Roberts, Michelle Brennan, Jeffrey Bartolucci, D Cannon
The motion imagery community would benefit from the availability of standard measures for assessing image interpretability. The National Imagery Interpretability Rating Scale (NIIRS) has served as a community standard for still imagery, but no comparable

Specification-Driven Testing of Smart Card Interface Using a Formal Model

April 30, 2007
Author(s)
Ramaswamy Chandramouli, Mark Blackburn
Model-Driven Engineering (MDE) is emerging as a promising approach that uses models to support various phases of system development lifecycle such as Code Generation and Verification/Validation (V &V). In this paper, we describe the application of a model

TRC Thermodynamics Tables - Hydrocarbon Supplement No. H133

April 30, 2007
Author(s)
Michael D. Frenkel
1. Table 23-2-(1.20238)-db: Pages db-1476.0 and db-1476.1 New table for 2,3-dimethylpentane containing the density for the real fluid at selected temperatures and pressures. 2. Table 23- 2-(3.35162)-db: Pages db-2216.0 and db-2216.1 New table for cis
Displaying 32651 - 32675 of 73929
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