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Displaying 33401 - 33425 of 73830

Learning in a Hierarchical Control System: 4D/RCS in the DARPA LAGR Program

December 29, 2006

Author(s)

James S. Albus, Roger V. Bostelman, Tommy Chang, Tsai H. Hong, William P. Shackleford, Michael O. Shneier

The Defense Applied Research Projects Agency (DARPA) Learning Applied to Ground Vehicles (LAGR) program aims to develop algorithms for autonomous vehicle navigation that learn how to operate in com-plex terrain. Over many years, the National Institute of

Observation of the Radiative Decay Mode of the Free Neutron

December 29, 2006

Author(s)

Jeffrey S. Nico, Maynard S. Dewey, Thomas R. Gentile, Hans P. Mumm, Alan K. Thompson, B Fisher, I Kremsky, Fred E. Wietfeldt, T E. Chupp, R Cooper, E Beise, K G. Kiriluk, J Byrne, Kevin J. Coakley

The theory of quantum electrodynamics predicts that beta decay of the neutron into a proton, electron, and antineutrino should be accompanied by a continuous spectrum of soft photons. While this inner bremsstrahlung branch has been previously measured in

PIV Card to Reader Interoperability Guidelines

December 29, 2006

Author(s)

James F. Dray Jr., April Giles, Michael Kelley, Ramaswamy Chandramouli

The purpose of this document is to present recommendations for Personal Identity Verification (PIV) card readers in the area of performance and communications characteristics to foster interoperability. This document is not intended to re-state or

ThermoData Engine (TDE)Version 2.0 (Pure Compounds with EOS support); NIST Standard Reference Database #103

December 29, 2006

Author(s)

Michael D. Frenkel, Robert D. Chirico, Vladimir Diky, Chris Muzny, Eric Lemmon, Xinjian Yan, Qian Dong

ThermoData Engine version 2.0 is an extension of NIST Standard Reference Database #103 version 1.0. The two principal new features are; (1) the capability to generate equations of state (EOS)on demand depending on the data scenario; and (2)period updates

Toward a Computational Theory of Mind

December 29, 2006

Author(s)

James S. Albus

Scientific knowledge of the brain and technology of intelligent systems have developed to a point where a computational theory of mind is feasible. This paper briefly describes the RCS (Real-time Control System) reference model architecture that has been

Managing Enterprise Risk in Today's World of Sophisticated Threats: A Framework for Developing Broad-based, Cost-effective Information Security Programs

December 28, 2006

Author(s)

Ronald S. Ross

The Federal Information Security Management Act of 2002 places significant requirements on federal agencies for the protection of information and information systems including those systems comprising the critical infrastructure of the United States. The

Reduced repair of 8-hydroxyguanine in the human breast cancer cell line, HCC1937

December 27, 2006

Author(s)

S. G. Nyaga, A. Lohani, Pawel Jaruga, A. Trzeciak, M Miral Dizdar, M. K. Evans

Thickness dependence of microstructure in semiconducting films of an oligofluorene derivative

December 27, 2006

Author(s)

Dean M. DeLongchamp, M -. Ling, Yeon-Gil Jung, Daniel A. Fischer, M E. Roberts, Eric K. Lin, Zhenan Bao

NIST Handbook 150-18 NVLAP Fasteners and Metals: 2006 Edition

December 22, 2006

Author(s)

Thomas R. Davis

NIST Handbook 150-18 presents technical requirements and guidance for the accreditation of laboratories under the National Voluntary Laboratory Accreditation Program(NVLAP)Fasteners and Metals Program. It is intended for information and use by accredited

A New Paradigm for Interconnect Geometry to Reduce Grain Boundary Resistance

December 21, 2006

Author(s)

Daniel Josell

A zig-zag line geometry is introduced for control of grain boundary density within fine wires for interconnect applications; the geometry is selected because the grain boundaries will be driven toward the narrowest locations to reduce the free energy of

Elastic mapping and quantitative nanoscale modulus measurements of SnO2 nanobelts

December 21, 2006

Author(s)

Yuegui Zheng, Robert E. Geer, Malgorzata Kopycinska-Mueller, Donna C. Hurley

A comparative study of the elastic uniformity and modulus of single-crystal SnO2 nanobelts is presented employing two nondestructive techniques based on atomic force microscopy: differential ultrasonic force microscopy (d-UFM) and atomic force acoustic

Is NO 3 Formed During the Decomposition of Nitramine Explosives?

December 21, 2006

Author(s)

Karl K. Irikura, Russell D. Johnson III

Quantum chemistry calculations reveal that it is both thermodynamically and kinetically reasonable to produce NO3 (nitrate radical) during the thermal decomposition of RDX (1,3,5-trinitrohexahydro-s-triazine) and other nitramines. However, experimental

Laser Cooled Atoms as a Focused Ion Beam Source

December 21, 2006

Author(s)

James L. Hanssen, Jabez J. McClelland, E Dakin, M Jacka

The evolving field of nanofabrication demands that more precise fabrication and evaluation tools be developed. We describe a method for creating a high quality focused ion beam with enhanced capabilities using an ion source based on laser-cooled neutral

Absolute Absorptivity of Single-walled Carbon Nanotubes Employing a Pyroelectric Detector

December 20, 2006

Author(s)

Katie Hurst, Anne Dillon, John H. Lehman

Optical properties are important for determining fundamental characteristics of carbon single-walled nanotube (SWNT) samples including purity, chirality, and tube diameter. Previously, we have estimated the volume fraction of metallic versus semiconducting

Evaluation Campaigns and TRECvid

December 20, 2006

Author(s)

Alan Smeaton, Paul D. Over, Wessel Kraaij

The TREC Video Retrieval Evaluation (TRECvid) is an international benchmarking activity to encourage research in video information retrieval by providing a large test collection, uniform scoring procedures, and a forum for organizations interested in

Manipulation of magnetic particles by patterned arrays of magnetic spin-valve traps

December 20, 2006

Author(s)

Elizabeth Mirowksi, John M. Moreland, Stephen E. Russek, Michael J. Donahue

A novel magnetic for microfluidic manipulation of magnetic particles is discussed. The particles are confined by an array of magnetic spin valves with bistable ferromagnetic "ON" and antiferromagnetic "OFF" net magnetization states. The switchable fringing

Characterization and Surface-Reactivity of Nanocrystalline Anatase in Aqueous Solutions

December 19, 2006

Author(s)

Moira K. Ridley, Vincent A. Hackley, Michael L. Machesky

The chemical and electrostatic interactions at mineral- water interfaces are of fundamental importance in many geochemical, materials science, and technological processes; however, the effects of particle size at the nanoscale on these interactions are

Maintaining Effective Information Technology (IT) Security Through Test, Training, and Exercise Programs

December 19, 2006

Author(s)

Shirley M. Radack

This bulletin summarizes the information provided in NIST SP 800-84, concerning the need to design, develop, conduct, and evaluate Test, Training, and Exercise (TT&E) activities. The bulletin provides information on how organizations can prepare for

Recommended Security Controls for Federal Information Systems

December 19, 2006

Author(s)

Ronald S. Ross, Stuart W. Katzke, L A. Johnson, Marianne M. Swanson, G Stoneburner, G Rogers

[Superseded by NIST SP 800-53 Revision 2 (December 2007): http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51351] The purpose of this publication is to provide guidelines for selecting and specifying security controls for information systems

Single-photon detection using a quantum dot optically gated field-effect transistor with high internal quantum efficiency

December 19, 2006

Author(s)

Mary A. Rowe, Eric Gansen, Marion Greene, Danna Rosenberg, Robert Hadfield, Todd E. Harvey, Sae Woo Nam, Mark Su, Richard Mirin

We investigate the operation of a quantum dot, optically gated, field-effect transistor as a photon detector. The detector exhibits time-gated, single-shot, single-photon sensitivity, a linear response, and an internal quantum efficiency of up to [68±18] %

Surfaces of Fluorinated Pyridinium Block-Copolymers with Enhanced Antibacterial Activity

December 19, 2006

Author(s)

Sitaraman Krishnan, R J. Ward, A Hexemer, K E. Sohn, K L. Lee, E R. Angert, Daniel A. Fischer, E J. Kramer, C K. Ober

An International Effort to Achieve Comparability of Test Results

December 16, 2006

Author(s)

C Jackson, Robert Wielgosz, Willie E. May

Part B Measurement Methods for Composition and Structure

December 16, 2006

Author(s)

Willie E. May

Measurement Methods for Composition and Structure

Assessment and Future Opportunities of the NIST-UMBI Partnership

December 15, 2006

Author(s)

V L. Vilker

See attached Executive Summary.NO ABSTRACT INCLUDED.

Cosputtered Nb-Si barrier Josephson junctions for superconductive electronics applications

December 15, 2006

Author(s)

Burm Baek, Paul Dresselhaus, Samuel Benz

Junctions using amorphous NbxSi1-x as a barrier have been developed for a wide range of possible applications. By co-sputtering the Nb and Si, both the relative composition and the barrier thickness can be independently controlled. As the Nb content

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