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Displaying 24551 - 24575 of 73697

July 2011 SRM Spotlight

July 5, 2011
Author(s)
Regina R. Montgomery
The SRM Spotlight is a newsletter published by the Measurement Services Division for users of NIST standard reference materials. The Spotlight announces new reference materials and provides information about their use. In addition, this newsletter contains

Microscopy and Microanalysis of Individual Collected Particles- Chapter 10

July 5, 2011
Author(s)
Robert A. Fletcher, Nicholas W. Ritchie, Ian M. Anderson, John A. Small
This chapter describes microscopy and microanalysis techniques used for the characterization of collected, individual particles in a variety of instruments. The instruments discussed are the light microscope, electron microscopes (both scanning and

Using Cross-Evaluation to Evaluate Interactive QA Systems

July 5, 2011
Author(s)
Emile L. Morse, Ying Sun, Paul B. Kantor
Abstract: In this paper, we report on an experiment to assess the possibility of rigorous evaluation of interactive Question-Answering (QA) systems using the Cross-Evaluation method. This method takes into account the effects of tasks and context, and of

An Efficient Sensitivity Analysis Method for Large Cloud Simulations

July 4, 2011
Author(s)
Kevin L. Mills
We describe Koala, an infrastructure Cloud simulator inspired by the Amazon Elastic Compute Cloud (EC2). We conduct a sensitivity analysis of Koala, revealing eight behavioral dimensions, which are influenced significantly by six parameters. Our findings

Four-color laser white illuminant demonstrating high color-rendering quality

July 4, 2011
Author(s)
Alexander Neumann, Jonathan Wierer , Wendy L. Davis, Yoshi Ohno, Steve Brueck, Jeff Tsao
Solid-state lighting is currently based on light-emitting diodes (LEDs) and phosphors. Solid-state lighting based on lasers would offer significant advantages including high potential efficiencies at high current densities. Light emitted from lasers

Quantum superposition of a single microwave photon in two different colour states

July 3, 2011
Author(s)
Eva A. Zakka-Bajjani, Francois E. Nguyen, Minhyea Lee, Leila R. Vale, Raymond Simmonds, Joe Aumentado
The ability to manipulate photonic states is an important tool for quantum information processing. In cavity quantum electrodynamics (QED), coupling between bosonic modes has, until now, required a qubit to mediate the interaction. As an alternative, it is

A New Method for Evaluation of UNIFAC Interaction Parameters

July 1, 2011
Author(s)
Jeongwon Kang, Vladimir Diky, Robert D. Chirico, Joe W. Magee, Chris Muzny, Ilmutdin M. Abdulagatov, Andrei F. Kazakov, Michael D. Frenkel
A new method for obtaining UNIFAC group-group interaction parameters is proposed using evaluated thermophysical property data generated at the Thermodynamics Research Center (TRC) of the National Institute of Standards and Technology (NIST). Using the

Access Control for SAR Systems

July 1, 2011
Author(s)
Stephen Quirolgico, Chung Tong Hu, Tom T. Karygiannis
The Access Control for SAR Systems (ACSS) project focused on developing a prototype privilege management system used to express and enforce policies for controlling access to Suspicious Activity Report (SAR) data within the law enforcement domain. This

An Electromagnetic Evaluation of the NASA Space Power Facility at Plum Brook Station

July 1, 2011
Author(s)
Galen H. Koepke, John M. Ladbury, Dennis G. Camell, Jason B. Coder, Chriss A. Grosvenor, Randy Direen, Jeffrey R. Guerrieri
We describe in this report (Technical Note) an extensive electromagnetic evaluation of a unique test facility designed and built by the National Aeronautics and Space Administration (NASA). The Space Power Facility is presumed to be the world’s largest

Atomistic simulations for engineering: Potentials and challenges

July 1, 2011
Author(s)
Chandler A. Becker
Atomistic simulations, both electronic structure and non-quantum-mechanical methods such as molecular dynamics, are gaining in popularity and utility to treat a wide range of nanoscale phenomena and materials. These areas include catalysis, precipitation

Electrical Characterization of Photoconductive GaN Nanowire Devices from 50 MHz to 33 GHz

July 1, 2011
Author(s)
Thomas M. Wallis, Dazhen Gu, Atif A. Imtiaz, Pavel Kabos, Paul T. Blanchard, Norman A. Sanford, Kristine A. Bertness, Christpher Smith
The electrical response of two-port., photoconductive GaN nanowire devices was measured from 50 MHz to 33 GHz. The admittance of individual contacted nanowires showed an increase on the order of 10% throughout the measured frequency range after exposure to

Embedded Capacitive Displacement Sensor for Nanopositioning Applications

July 1, 2011
Author(s)
Svetlana Avramov-Zamurovic1, Nicholas Dagalakis, Rae Duk Lee, Jae M. Yoo, Seung H. Yang
The scale of nano objects requires very precise position determination. The state-of-the-art manipulators involve accurate nanometer positioning. The paper presents the design, fabrication process and testing of a capacitance based displacement sensor

Evaluating the characteristics of multiwall carbon nanotubes

July 1, 2011
Author(s)
John H. Lehman, M. Terrones, Elisabeth Mansfield, Katie Hurst, Vincent Muenier
During the past 20 years, multiwall carbon nanotubes (MWCNTs) have become an important industrial material. Hundreds of tons are produced each year. This review is a survey of the scientific literature, motivated by industrial requirements and guidelines

GaN nanowires grown by molecular beam epitaxy

July 1, 2011
Author(s)
Kristine A. Bertness, Norman A. Sanford, Albert Davydov
The unique properties of GaN nanowires grown by molecular beam epitaxy are reviewed. These properties include defect-free growth mode with no residual strain, long photoluminescence lifetime, low surface recombination velocity and high mechanical quality

Graphene: Materials to devices

July 1, 2011
Author(s)
Jungseok Chae, Jeonghoon Ha, H. Baek, Young Kuk, Suyong S. Jung, Young J. Song, Nikolai B. Zhitenev, Joseph A. Stroscio, S.J. Woo, Y.-W. Son

IEEE TC-10: Update 2011

July 1, 2011
Author(s)
Nicholas G. Paulter Jr., Thomas E. Linnenbrink, W. B. Boyer, S. J. Tilden, Travis Ellis
There is a world-wide need to standardize terms, test methods, and the computation of performance parameters for devices that generate, measure, and analyze waveforms. Users need to be able to unambiguously specify the device performance required for

Investigation of Weak Interlayer Exchange Coupling in the GaMnAs/GaAs Superlattice with Insulating Nonmagnetic Spacers

July 1, 2011
Author(s)
Jae-Ho Chung, Young-Sang Song, Taehee Yoo, Sun-Jae Chung, Sanghoon Lee, Brian Kirby, X. Liu, J. K. Furdyna
A robust long-range antiferromagnetic coupling between ferromagnetic Ga 0.97Mn 0.03As layers has previously been realized via insertion of non-magnetic Be-doped GaAs spacers. In this paper, we report the observation of the weak antiferromagnetic coupling

Mass Spectrometry Characterization for Chemoenzymatic Glycoprotein Synthesis

July 1, 2011
Author(s)
John E. Schiel, Mark S. Lowenthal, Karen W. Phinney
Glycoproteins exist as heterogeneous mixtures of glycoforms due to glycosylation at multiple sites with various glycans. The glycosylation pattern has significant implications for clinical diagnostics and biopharmaceutical development because it affects

Messaging Work Bench Instructions

July 1, 2011
Author(s)
Ioana Singureanu
Documentation on using the Messaging Workbench (MWB) tool to edit the profile created for the NCPDP SCRIPT Implementation Guide: Version 10.6 NEWRX New Prescription and RXHRES Prescription History Response message structures.

Model Based Enterprise for Manufacturing

July 1, 2011
Author(s)
Simon P. Frechette
A Model-Based Enterprise (MBE) is an organization that applies modeling and simulation technologies to integrate and manage its technical and business processes related to production and product lifecycle support. By using product and process models to
Displaying 24551 - 24575 of 73697
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