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Search Publications

NIST Authors in Bold

Displaying 24251 - 24275 of 73930

Security Automation from a NIST Perspective

October 21, 2011
Author(s)
John F. Banghart, Stephen D. Quinn, Kevin M. Stine
Security automation can harmonize the vast amounts of information technology (IT) data into coherent, comparable information streams that inform timely and active management of diverse IT systems. Through the creation of internationally recognized

Counting Bugs is Harder Than You Think

October 20, 2011
Author(s)
Paul E. Black
Software Assurance Metrics And Tool Evaluation (SAMATE) is a broad, inclusive project at the U.S. National Institute of Standards and Technology (NIST) with the goal of improving software assurance by developing materials, specifications, and methods to

Dual comb-based characterization of rapidly tuned lasers

October 20, 2011
Author(s)
Fabrizio R. Giorgetta, Esther Baumann, Ian R. Coddington, William C. Swann, Nathan R. Newbury, Zeb W. Barber, Peter Roos
Time-resolved, high-accuracy and high-resolution spectroscopy of rapidly tuned cw lasers is critical to realizing their full potential for sensing, but is not possible with conventional spectrometers. We demonstrate a coherent dual-comb-based spectrometer

Using the BACnet Data Source v1.7

October 20, 2011
Author(s)
Michael A. Galler
The BACnet Data Source (BDS) was developed to be used as a component of the Virtual Cybernetic Building Testbed (VCBT) (1), in conjunction with work on various Fault Detection and Diagnostics (FDD) (2) and Building Commissioning (Cx) tools. The VCBT uses

Anisotropic in-plane reversible strain effect in Y 0.5 Gd 0.5 Ba 2 Cu 3 O 7-d coated conductors

October 19, 2011
Author(s)
Daniel C. van der Laan, Dmytro Abraimov, A A. Polyanskii, David C. Larbalestier, J. F. Douglas, R. Semerad, M Bauer
Recent experiments have shown that reversible effects of strain on the critical current density and flux pinning strength in the high-temperature superconductor Bi 2Sr 2Ca 2Cu 3O x can be explained entirely by the pressure dependence of its critical

Multiferroic Behaviour in the New Double-Perovskite Lu 2 MnCoO 6

October 18, 2011
Author(s)
S. Yanez-Vilar, E. D. Mun, V. S. Zapf, B. G. Ueland, Jason S. Gardner, J. D. Thompson, J. Singleton, M. Sanchez-Andujar, J. Mira, N. Biskup, Rodriguez Senaris, C. D. Batista
We present a new member of the multiferroic oxides, Lu 2MnCoO 6, which we have investigated using X-ray diffraction, neutron diffraction, specific heat, magnetization, electric polarization, and dielectric constant measurements. This material possesses an

Abstract of the presentation: Position- and polarization- resolved microphotoluminescence of GaN/AlGaN core-shell nanowires

October 17, 2011
Author(s)
Albert Davydov, G. Jacopin, S. Bellei, Denis Tsvetkov, Kristine A. Bertness, L. Rigutti, Norman A. Sanford, John B. Schlager, M. Tchernycheva, F. H. Julien
Over the past decade, core-shell nanowires (NWs) have been intensively used as the building blocks of novel optoelectronic devices as solar cells [1], LEds [2], naolasers [3]. Indeed, this geometry not only allows to passivate surface states, but also

Analysis of Advanced Metering over a Wide Area Cellular Network

October 17, 2011
Author(s)
Michael R. Souryal, Nada T. Golmie
This paper presents a framework for analysis of the coverage and capacity of advanced metering over a wide area cellular network. The coverage analysis predicts the maximum cell size subject to an outage criterion, and the capacity analysis predicts the

Determination of Moisture Content of Single-Wall Carbon Nanotubes

October 17, 2011
Author(s)
Rolf L. Zeisler, Rabia Oflaz, Ralph E. Sturgeon, Rick L. Paul, Brian E. Lang, Jeffrey A. Fagan, Joseph W. Lam, Anthony Windust, P Grinberg, Benoit Simard, Christopher T. Kingston
Several techniques were evaluated for the establishment of reliable water/moisture content of single-wall carbon nanotubes. Karl Fischer titration (KF) provides for a direct measure of the water content and was used for benchmarking against results

Impact of surface roughness on diffusion of confined fluids

October 17, 2011
Author(s)
William P. Krekelberg, Vincent K. Shen, Jeffrey R. Errington, Thomas M. Truskett
Using event-driven molecular dynamics simulations, we quantify how the self diffusivity of confined hard-sphere fluids depends on the nature of the confining boundaries. We explore systems with featureless confining boundaries that treat particle-boundary

In Memoriam Professor Ralph L. Webb (1934-2011)

October 17, 2011
Author(s)
Mark A. Kedzierski, Richard Goldstien, Ephriam Sparrow, W.J. Minkowycz, Thomas Rudy, Nae-Hyun Kim, Wei Li, Thomas Adamek, Klaus Menze, Raj Manglik, Wieland-Werke AG, Sujoy K. Saha, Arthur Bergles

Porous Superhydrophobic Membranes: Hydrodynamic Anomaly in Oscillating Flows

October 17, 2011
Author(s)
Sukumar Rajauria, O. Ozsun, John R. Lawall, V. Yakhot, Kamil L. Ekinci
Inspiration for man-made superhydrophobic surfaces comes from Nature: the Lotus leaf [1–3], for instance, exploits superhydrophobicity to keep its surface dry and clean from contaminants. Superhydrophobicity emerges due to roughness on a chemically

Strategy and Modeling for Building DR Optimization

October 17, 2011
Author(s)
Richard Lau, Sami Ayyorgun, Siun Chuon Mau, Archan Misra, David Holmberg, Steven T. Bushby
While it is well recognized that renewable microgrid generation and intelligent storage can significantly reduce a building's need for grid power and its peak loading, there is currently no sound and generalized approach to combine these two technologies

In Situ Gas Phase Diagnostics for Titanium Nitride Atomic Layer Deposition

October 14, 2011
Author(s)
James E. Maslar, William A. Kimes, Brent A. Sperling
This report describes the performance of a technique for the simultaneous, rapid measurement of major gas phase species present during titanium nitride thermal atomic layer deposition involving tetrakis(dimethylamido) titanium (TDMAT) and ammonia. In this

Quasi-elastic Neutron Scattering Studies on Dynamics of Water Confined in Nanoporous Copper Rubeanate Hydrates

October 14, 2011
Author(s)
Takeshi Yamada, Ryo Yonaimine, Teppei Yamada, Hiroshi Kitagawa, Madhu Sudan Tyagi, Michihiro Nagao, Osamu Yamamuro
We have investigated the mechanism of the first order transition and proton conductivity in copper rubeanate hydrates from microscopic and dynamical points of view. Three different types of neutron spectrometer, time of flight, back scattering and neutron

Radiation-Induced Synthesis of Poly(vinylpyrrolidone) Nanogel

October 14, 2011
Author(s)
Jung-Chul An, Alia Weaver, Byungnam Kim, Aaron Barkatt, Dianne L. Poster, Wyatt N. Vreeland, Joseph Silverman, Mohamad Al-Sheikhly
Studies of the radiation-induced synthesis of poly(vinylpyrrolidone) (PVP) nanogels, intended to provide a basis for obtaining intra-molecular cross-linked products, which are more useful in drug delivery, show that a sharp change in the controlling

Spatial Distribution of Intra-Molecular Water and Polymeric Components in Polyelectrolyte Dendrimers Revealed by Small Angle Scattering Investigations

October 14, 2011
Author(s)
Bin Wu, Xin Li, Changwoo Do, Tae-Hwan Kim, Chwen-Yang Shew, Yun Liu, Jun Yang, Kunlun Hong, Lionel Porcar, Chun-Yu Chen, Emily L. Liu, Gregory S. Smith, Kenneth W. Herwig, Wei-Ren Chen
An experimental scheme using contrast variation small angle neutron scattering technique (SANS), is developed to investigate the structural characteristics of amine-terminated poly(amidoamine) dendrimers (PAMAM) solutions. Using this methodology, we

Field-induced Quantum Fluctuations in the Heavy Fermion Superconductor CeCu 2 Ge 2

October 13, 2011
Author(s)
Deepak Singh, A. Thamizhavel, Jeffrey W. Lynn, S. K. Dhar, Jose A. Rodriguez, Tobias K Herman
Quantum-mechanical fluctuations in strongly correlated electron systems cause unconventional phenomena such as non-Fermi liquid behavior, and arguably high temperature superconductivity. Here we report the discovery of a field-tuned quantum critical
Displaying 24251 - 24275 of 73930
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