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Displaying 40451 - 40475 of 73960

A Rapid Prototyping Technique for the Fabrication of Solvent-Resistant Structures

October 1, 2003
Author(s)
C Harrison, J Cabral, Christopher M. Stafford, Alamgir Karim, Eric J. Amis
We demonstrate a rapid prototyping technique for the fabrication of solvent-resistant channels up to and exceeding one millimeter in height. The fabrication of channels with such dimensions by conventional lithography would be both challenging and time

Adaptive Characterization of Jitter Noise in Sampled High-Speed Signals

October 1, 2003
Author(s)
Kevin J. Coakley, Chih-Ming Wang, Paul D. Hale, Tracy S. Clement
We estimate the root-mean-square (RMS) value of timing jitter noise in simulated signals similar to measured high-speed sampled signals. The simulated signals are contaminated by additive noise, timing jitter noise, and time shift errors. Before estimating

Advanced Engineering Environments for Small Manufacturing Enterprises: Volume I

October 1, 2003
Author(s)
Steven J. Fenves, Ram D. Sriram, Young Choi, J E. Robert
Advanced engineering environments (AEEs) are computational and communications systems that can create virtual and/or distributed environments linking researchers, technologists, designers, manufacturers, suppliers, and customers, providing for the orderly

Averaged Transition Conditions for Electromagnetic Fields at a Metafilm

October 1, 2003
Author(s)
Edward Kuester, Mohamed Mohamed, Christopher L. Holloway, Melinda Picket-May
This work derives generalized sheettransition conditions (GSTCs) for the average electromagnetic fields across a surface distribution of electrically small scatterers characterized by electric and magnetic polarization densities. We cann such an

Awareness in Human-Robot Interactions

October 1, 2003
Author(s)
J L. Drury, Jean C. Scholtz, Holly A. Yanco
This paper provides a set of definitions that form a framework for describing the types of awareness that humans have of robot activities and the knowledge that robots have of the commands given them by humans. We used as a case study an analysis of data

Backup Resource Pooling in (M : N) n Fault Recovery Schemes in GMPLS Optical Networks

October 1, 2003
Author(s)
Kotikalapudi Sriram, David W. Griffith, San-Nan K. Lee, Nada T. Golmie
In resilient optical networks, there is a tradeoff between the amount of resources allocated for protection versus the probability that a failed working path cannot be covered, known as protection blocking probability. Often the network topology permits

Building an Information Technology Security Awareness and Training Program

October 1, 2003
Author(s)
Mark Wilson, Joan Hash
NIST Special Publication 800-50, Building An Information Technology Security Awareness and Training Program, provides guidance for building an effective information technology (IT) security program and supports requirements specified in the Federal

Calibration of Radiation Thermometers in Rapid Thermal Processing Tools Using Si Wafers with Thin Film Thermocouples

October 1, 2003
Author(s)
Kenneth G. Kreider, William A. Kimes, Christopher W. Meyer, Dean C. Ripple, Benjamin K. Tsai, D H. Chen, D P. DeWitt
Rapid thermal processing (RTP) tools are currently monitored and controlled with lightpipe radiation thermometers (LPRTs) which have been calibrated with thermocouple instrumented wafers. We have developed a thin-film thermocouple wafer that enables more

Cluster-Assembled Materials Based on Na 6 Pb

October 1, 2003
Author(s)
J Zhao, Rui-Hua Xie
In experimental mass spectra of lead-sodium mixed clusters, an exceptionally abundant and stable Na 6Pb cluster has been discovered. [C. H. Yeretzian et al., Chem Phys. Lett 237, 334 (1995)]. By using first-principles calculations, several cluster

Collaborative Evolution of Process Plans in Distributed Manufacturing

October 1, 2003
Author(s)
Boonserm Kulvatunyou, Jungyub Woo, Hyunbo Cho
Global production has become a new trend in the today?s competitive business environment in pursuit of lower cost, shorter time-to-market, and better quality. This forces manufacturing enterprises to separate design houses and manufacturing facilities. The

Comment On 'General Principles for the Definition of the Base Units in the SI'

October 1, 2003
Author(s)
Michael R. Moldover, Dean C. Ripple
Recently, Kose et al. proposed general principles that should guide any future discussions regarding the redefinition of the SI base units and they illustrated their principles with an example of a revised SI. Part of their example (redefinition of the

Computer Forensics Tool Testing (CFTT)

October 1, 2003
Author(s)
James R. Lyle
The National Software Reference Library (NSRL) of the U.S. National Institute of Standards and Technology (NIST) collects software from various sources and publishes file profiles computed from this software (such as MD5 and SHA-1 hashes) as a Reference

Databases for Computational Thermodynamics and Diffusion Modeling

October 1, 2003
Author(s)
Ursula R. Kattner, J E. Morral, William J. Boettinger
tabases for computational thermodynamics and diffusion modeling can be applied to the prediction of phase diagrams and microstructural evolution. These can be used for alloy and process design as well as to improve modeling capabilities that would decrease

Deconvolving LADAR Images Of Bar Codes for Construction Site Object Recognition

October 1, 2003
Author(s)
David E. Gilsinn, Geraldine S. Cheok, Dianne M. O'Leary
This report discusses a general approach to reconstructing ground truth intensity images of bar codes that have been distorted by LADAR optics. The first part of this report describes the experimental data collection of several bar code images along with

Design and Performance of Capping Layers for Extreme-Ulatraviolet Multilayer Mirrors

October 1, 2003
Author(s)
Sasa Bajt, H N. Chapman, Nhan Nguyen, J Alameda, J C. Robinson, M Malinowski, E Gullikson, Andrew Aquila, Charles Tarrio, Steven Grantham
Multilayer lifetime has emerged as one of the major issues for the commercialization of extreme-ultraviolet lithography (EUVL). We describe the performance of an oxidation-resistant capping layer of Ru atop multilayers that results in a reflectivity above

Design and Workspace Analysis of a 6-6 Cable-Suspended Parallel Robot

October 1, 2003
Author(s)
H C. Pusey, A Fattah, S K. Agrawal, Elena R. Messina, Adam S. Jacoff
In this paper, we study the design and workspace of a 6-6 cable-suspended parallel robot. The workspace volume is characterized as the set of points where the centroid of the MP (MP) can reach with tensions in all suspension cables at a constant
Displaying 40451 - 40475 of 73960
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