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Displaying 39376 - 39400 of 74179

Analysis and Design of Parallel Mechanisms With Flexure Joints

April 30, 2004
Author(s)
Byoung H. Kang, J Wen, Nicholas Dagalakis, Jason J. Gorman
Flexure joints are frequently used in precision motion stages and micro-robotic mechanisms due to their monolithic construction. The joint compliance, however, can affect the static and dynamic performance of the overall mechanism.In this paper, we

Computer Security Division 2003 Annual Report

April 30, 2004
Author(s)
Tanya L. Brewer
This report covers the work conducted within the National Institute of Standards and Technology's Computer Security Division during the Fiscal Year 2003. It discusses all projects and programs within the Division, staff highlights, and publications. For

Linear optics quantum computation

April 30, 2004
Author(s)
Emanuel H. Knill
Workshop presentation: Presentation is a high level review of technical and policy issues in quantum information.

In-situ Studies of CO Oxidation on Pt(111): Evidence of a Self-Limiting Reaction at 140 K

April 29, 2004
Author(s)
D J. Burnett, A M. Gabelnick, A T. Capitano, Daniel A. Fischer, J L. Gland
In-situ oxidation experiments in oxygen pressures up to 1.3 Pa indicate that the 140 K carbon monoxide oxidation process is self-limiting. This experimental data suggests that adsorbed atomic oxygen may be responsible for limiting the extent of reaction

Micro-Time-Scale Network Measurements and Harmonic Effects

April 28, 2004
Author(s)
Mark E. Carson, Darrin J. Santay
As network transmission speeds increase, packet streams increasingly uncover fine details of the interior behavior of router hardware and software. This behavior reveals itself as a set of harmonic effects, as interior clocks periodically interrupt packet

Real-Time I/O Performance Metrics and Tests for Industrial Ethernet

April 28, 2004
Author(s)
James D. Gilsinn
Real-time input/output (I/O) communication over Ethernet is still fairly new in the industrial environment. There are many questions about the reliability and performance that have to be answered before industrial Ethernet can be utilized in most

Selecting Information Technology Security Products

April 28, 2004
Author(s)
Shirley M. Radack
This bulletin summarizes NIST Special Publication 800-36, "Guide to Selecting Information Technology Security Products." The selection of IT security products is an integral part of the design, development and maintenance of an IT security infrastructure

Visible, EUV, and X-Ray Spectroscopy at the NIST EBIT Facility

April 24, 2004
Author(s)
John D. Gillaspy, B Blagojevic, Paul A. Dalgarno, K Fahey, V Kharchenko, J M. Laming, L Logosi, E-O Le Bigot, K Makonyi, L P. Ratliff, E Silver, H. Schnopper, E Takacs, J N. Tan, H Tawara, K Tokesi
After a brief introduction to the NIST EBIT facility, we present the results of three different types of experiments that have been carried out there recently: EUV and visible spectroscopy in support of the microelectronics industry, laboratory

Tool Length-Dependent Stability Surfaces

April 20, 2004
Author(s)
T L. Schmitz, J C. Ziegert, Timothy J. Burns, Brian S. Dutterer, W R. Winfough
This paper describes the development of three-dimensional stability surfaces, or maps, that combine the traditional dependence of allowable (chatter-free) chip width on spindle speed with the inherent dependence on tool overhang length, due to the

Design of Occupant Egress Systems for Tall Buildings

April 19, 2004
Author(s)
Erica D. Kuligowski, Richard W. Bukowski
This paper presents an overview of current work and a discussion of the features of protected elevator systems that can provide safe and reliable operation both for fire service access and for occupant egress during fires. These features include water

Studies of Biometric Fusion Executive Summary

April 19, 2004
Author(s)
Craig I. Watson, Brad Ulery, R. A. Hicklin, William Fellner, P Halinan
This is an evaluation of different score-level fusion techniques, and the results of a variety of fusion experiments using face and fingerprint data from 187,000 individuals, with matcher scores from three fingerprint and three face recognition systems

Specifying Autonomy Levels for Unmanned Systems: Interim Report

April 16, 2004
Author(s)
Hui-Min Huang, James S. Albus, Elena R. Messina, R C. Wade, W English
The viability of Unmanned Systems as tools is increasingly recognized in many domains. As technology advances, the autonomy on board these systems also advances. In order to evaluate the systems in terms of their levels of autonomy, it is critical to have
Displaying 39376 - 39400 of 74179
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