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Search Publications

NIST Authors in Bold

Displaying 20801 - 20825 of 73697

The Cosmic Infrared Background Experiment (CIBER): the Narrow Band Spectrometer

August 19, 2013
Author(s)
Steven W. Brown, Keith R. Lykke, Allan W. Smith, P M. Korngut, T. Renbarger, T. Arai, J. Battle, A. Cooray, V. Hristov, B. Keating, M. G. Kims, A. Lanz, D. H. Lee, L. R. Levenson, P. Mason, T. Matsumoto, S. Matsuura, U. W. Niam, B. Shultz, I. Sullivan, K. Tsumura, T. Wada, M. Zemcov
We have developed a near-infrared spectrometer designed to measure the absolute intensity of the Solar 854.2 nm Ca II Fraunhofer line, scattered by interplanetary dust, in the Zodiacal light spectrum. Based on the known equivalent line width in the Solar

Effectively Control Negative Thermal Expansion of Single-phase Ferroelecrics of PbTiO 3 -(Bi,La)FeO 3 over a Giant Range

August 16, 2013
Author(s)
Jun Chen, Fangfang Wang, Qingzhen Huang, Lei Hu, Xiping Song, Jinxia Deng, Ranbo Yu, Xianran Xing
Control of negative thermal expansion is a fundamentally interesting topic in the negative thermal expansion materials in order for the future applications. However, it is a challenge to control the negative thermal expansion in individual pure materials

Space-Dependent Dynamics in 1,4-Polybutadiene Nanocomposite

August 16, 2013
Author(s)
J.H. Roh, Madhu Sudan Tyagi, T. E. Hogan, C. M. Roland
Neutron backscattering measurements were carried out on 1,4-polybutadiene, neat and bound to carbon nanoparticles. At large length scales (> 6Å), the Gaussian approximation holds: τ Β α ∝Q -2 where τ α is the segmental relaxation time, β the Kohlrausch

A Framework for Designing Cryptographic Key Management Systems

August 15, 2013
Author(s)
Elaine B. Barker, Miles Smid, Dennis Branstad, Santosh Chokhani
This Framework for Designing Cryptographic Key Management Systems (CKMS) contains topics that should be considered by a CKMS designer when developing a CKMS design specification. For each topic, there are one or more documentation requirements that need to

ACT-Touch Reference Manual, Working Draft

August 15, 2013
Author(s)
Kristen Greene, Franklin Tamborello
ACT-Touch is a set of manual motor request extensions for ACT-R 6 (Adaptive Control of Thought-Rational, hereafter, ACT-R) . These manual request extensions constitute theoretical claims predicting motor preparation and execution times for certain manual

Investigating the Application of Moving Target Defenses to Network Security

August 15, 2013
Author(s)
Rui Zhuang, Su Zhang, Alex Bardas, Scott DeLoach, Xinming Ou, Anoop Singhal
This paper presents a preliminary design for a moving-target defense (MTD) for computer networks to combat an attacker's asymmetric advantage. The MTD system reasons over a set of abstract models that capture the network's configuration and its operational

Overview of the TREC 2011 Microblog Track

August 15, 2013
Author(s)
Ian M. Soboroff, Iadh Ounis, Craig Macdonald, Jimmy Lin
The Microblog track examines search tasks and evaluation methodologies for information seeking behaviors in microblogging environments such as Twitter. It was first introduced in 2011, addressing a real-time adhoc search task, whereby the user wishes to

Radiation Studies of Spin-transfer Torque Materials and Devices

August 15, 2013
Author(s)
H. L. Hughes, Konrad Bussmann, Shu-Fan Cheng, Robert D. Shull, Andrew P. Chen, S. Schafer, T. Mewes, A. Ong, E. N. Chen
Spin-transfer torque film stacks and devices having in-plane magnetization were irradiated using a cobalt-60 gamma source. The film stacks have a biased, synthetic antiferromagnet spin-valve architecture. Measurements of magnetization vs. field

Segmented chirped-pulse Fourier transform submillimeter spectroscopy for broadband gas analysis

August 15, 2013
Author(s)
Justin L. Neill, Brent J. Harris, Amanda L. Steber, Kevin O. Douglass, David F. Plusquellic, Brooks H. Pate
Chirped-pulse Fourier transform spectroscopy has recently been extended to millimeter wave spectroscopy as a technique for the characterization of room-temperature gas samples. Here we present a variation of this technique that significantly reduces the

Economics of the U.S. Additive Manufacturing Industry

August 14, 2013
Author(s)
Douglas Thomas
There is a general concern that the US manufacturing industry has lost competitiveness with other nations. Additive manufacturing may provide an important opportunity for advancing US manufacturing while maintaining and advancing US innovation. Additive

Pulmonary and Cardiovascular Responses of Rats to Inhalation of Silver Nanoparticles

August 14, 2013
Author(s)
Jenny R. Roberts, Walt McKinney, Hong Kan, Kristine Krajnak, David G. Frazer, Treye Thomas, Stacey Waugh, Allison Kenyon, Robert I. MacCuspie, Vincent A. Hackley, Vincent Castranova
Rats were exposed by inhalation to filtered air or to a low (100 ug/m3 using a commercial antimicrobial product [20 mg/L silver]) or high (1000 ug/m3 using a suspension [200 mg/L silver] synthesized to have a similar size distribution) concentration of

Biometric Face Recognition: From Classical Statistics to Future Challenges

August 13, 2013
Author(s)
P J. Phillips, Geof H. Givens, J. R. Beveridge, Bruce A. Draper, David Bolme, Yui M. Lui
Automated face recognition has moved from science fiction to reality during the last twenty years. For high quality frontal face images, recognition errors have been cut in half every two years as more sophisticated algorithms are developed. Algorithms and

Correlation Coefficient and Loading Effects for MIMO Antennas in a Reverberation Chamber

August 13, 2013
Author(s)
Nick Janssen, Kate Remley, Christopher L. Holloway, William F. Young
The correlation coefficient is a common metric for assessing the performance of an antenna for a multiple-input, multiple-out wireless device. In this paper, the effect of loading a reverberation chamber on the calculation of the correlation coefficient is

Energy Metrics for Product Assembly Equipment and Processes

August 13, 2013
Author(s)
Shaw C. Feng, FNU Kumaraguru, Christopher U. Brown, Boonserm Kulvatunyou
A key factor deciding the capacity to increase the sustainability of final products is the energy efficiency. The energy embodied in a product is an aggregation of all of the energy embodied in the products' components and subsystems, expended through its

Integration of Energy Information for Product Assembly and Logistics Processes

August 13, 2013
Author(s)
Shaw C. Feng, FNU Kumaraguru, Kincho H. Law, Kyeong Rim Ahn
This paper presents an on-going effort at NIST to model the energy performance in assembly and supply chain processes as a part of a larger sus-tainability improvement goal. Energy performance modeling comprises two dis-tinct metrics like energy
Displaying 20801 - 20825 of 73697
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