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NIST Authors in Bold

Displaying 25626 - 25650 of 73697

Generalized ellipsometry of artificially designed line width roughness

December 10, 2010
Author(s)
Martin Foldyna, Thomas A. Germer, Brent Bergner, Ronald G. Dixson
We use azimuthally-resolved spectroscopic Mueller matrix ellipsometry to study a periodic silicon line structure with and without artificially-generated line width roughness (LWR). We model the artificially perturbed grating using 1D and 2D rigorous

k-Zero Day Safety: Measuring the Security Risk of Networks Against Unknown Attacks

December 10, 2010
Author(s)
Lingyu Wang, Sushil Jajodia, Anoop Singhal, Steven Noel
The security risk of a network against unknown zero day attacks has been considered as something unmeasurable since software flaws are less predictable than hardware faults and the process of finding such flaws and developing exploits seems to be chaotic

Modeling of Self-Heating Mechanism in the Design of Superconducting Limiters

December 10, 2010
Author(s)
Eduard Rocas, Juan C. Collado Gomez, Jordi Mateu, Nathan D. Orloff, James C. Booth
This work proposes a modeling method to simulate how temperature rise, due to power dissipation, affects the performance of a HTS limiter. The spatial temperature rise distribution across and along a HTS transmission line is determined by heat generation

Low loss superconducting titanium nitride coplanar waveguide resonators

December 9, 2010
Author(s)
Michael Vissers, Jiansong Gao, David S. Wisbey, David P. Pappas, C. C. Tsuei, A. D. Corcoles, Matthias Steffen
Thin films of TiN were sputter-deposited onto Si and sapphire wafers with and without SiN buffer layers. The films were fabricated into RF coplanar waveguide resonators, and internal quality factor measurements were taken at millikelvin temperatures in

Far-ultraviolet signatures of the 3He(n,tp) reaction in noble gas mixtures

December 8, 2010
Author(s)
Patrick Hughes, Alan K. Thompson, Michael Coplan, Robert E. Vest, Charles W. Clark
Previous work showed that the 3He(n,tp) reaction in a cell of 3He at atmospheric pressure generated tens of far-ultraviolet photons per reacted neutron. Here we report amplification of that signal by factors of 1000 and more when noble gases are added to

Mapping Crystal Orientation in High Performance Thienothiophene Copolymer Thin Films

December 8, 2010
Author(s)
Xinran Zhang, Steven D. Hudson, Dean M. DeLongchamp, David J. Gundlach, Martin Heeney, Iain McCulloch
Mapping of crystalline grain orientation for solution-processed semiconducting polymer thin films is key to understanding charge transport in electronic devices based on them and yet challenging. In this work, a high mobility thienothiophene copolymer

Toward Objective Global Privacy Standards

December 8, 2010
Author(s)
Ari M. Schwartz
Technical standards offer a new ability to support the important public policy goal of better protecting privacy. To do so most effectively, we must begin to move from the privacy standards based on subjective and procedural efforts to a series of

AN EFFICIENT SENSITIVITY ANALYSIS METHOD FOR NETWORK SIMULATION MODELS

December 7, 2010
Author(s)
Kevin L. Mills, James J. Filliben
Simulation models for data communications networks encompass numerous parameters that can each take on millions of values, presenting experimenters with a vast space of potential parameter combinations. To apply such simulation models experimenters face a

A gas pressure scale based on primary standard piston gauges

December 6, 2010
Author(s)
Douglas A. Olson, Robert G. Driver, Walter J. Bowers Jr.
The National Institute of Standards and Technology has redefined its gas pressure scale, up to 17 MPa, based on two primary standard piston gauges. The primary standard piston gauges are 35.8 mm in diameter and operate from 20 kPa to 1 MPa. Ten secondary

Modeling Affiliations in Networks

December 6, 2010
Author(s)
Brian D. Cloteaux
One way to help understand the structure of certain networks is to examine what common group memberships the actors in the network share. Linking actors to their common affiliations gives an alternative type of network commonly called an affiliation

3D Polymer Scaffold Arrays

December 5, 2010
Author(s)
Carl G. Simon Jr., Yanyin Yang, Shauna M. Dorsey, Murugan Ramalingam, Kaushik Chatterjee
We have developed a combinatorial platform for screening the effect polymer scaffold properties and composition on cell response. Traditional research involves preparing samples one at a time for characterization and testing. Combinatorial and high

How to Model a TCP/IP Network Using Only 20 Parameters

December 5, 2010
Author(s)
Kevin L. Mills, Edward J. Schwartz, Jian Yuan
Most simulation models for data communication networks encompass hundreds of parameters that can each take on millions of values. Such models are difficult to understand, parameterize and investigate. This paper explains how to model a modern data

Precise Throughput Determination of the PanSTARRS Telescope and the Gigapixel Imager using a Calibrated Silicon Photodiode and a Tunable Laser: Initial Results

December 2, 2010
Author(s)
Christopher W. Stubbs, Peter Doherty, Claire Cramer, Gautham Narayan, Yorke Brown, Ned Henry, Keith R. Lykke, John T. Woodward IV, John L. Tinry
We have used a precision calibrated photodiode as the fundamental metrology reference in order to determine the relative throughput of the PanSTARRS telescope and the Gigapixel imager, from 400 nm to 1050 nm. Our technique uses a tunable laser as a source

A Framework of Product and Process Metrics for Sustainable Manufacturing

December 1, 2010
Author(s)
T. Lu, A. Gupta, A. D. Jayal, F. Badurdeen, Shaw C. Feng, O. W. Dillon, I. S. Jawahir
This paper presents a framework for developing comprehensive product and process metrics for sustainable manufacturing, using machined products and machining processes examples, and addressing all three aspects of the triple bottom line environment
Displaying 25626 - 25650 of 73697
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