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Displaying 42826 - 42850 of 73779

Security Guide for Interconnecting Information Technology Systems

September 1, 2002
Author(s)
Timothy Grance, Joan Hash, Steven Peck, Jonathan Smith, Karen Korow-Diks
The Security Guide for Interconnecting Information Technology Systems provides guidance for planning, establishing, maintaining, & terminating interconnections between information technology (IT) systems that are owned & operated by different organizations

Self-Organization of Supramolecular Helical Dendrimers Into Complex Electronic Materials

September 1, 2002
Author(s)
Virgil Percec, A Rapp, Hans -. Spiess, Steven Hudson, H Duan, M Glodde, T K. Bera, Y Miura, I Shiyanovskaya, K D. Singer, V S. Balagurusamy, Paul A. Heiney, I Schnell
The discovery of electrical conduction in organic crystals and polymers has widened the range of potential optoelectronics materials, provided these exhibit sufficiently high charge carrier mobilities and are easy to make and process. Organic single

Spin-Current Induced Magnetotransport in Co/Cu/Co Nanostructures

September 1, 2002
Author(s)
Fred B. Mancoff, Stephen E. Russek
We report measurements on sub-100 nm current-perpendicular-to-place Co/Cu/Co spin-valves. The giant magnetoresistance versus applied magnetic field shows the switching in individual patterned Co nanomagnets. Spin transfer from the spin-polarized current to

Technical Digest Symposium on Optical Fiber Measurements, 2002

September 1, 2002
Author(s)
Paul A. Williams, Gordon W. Day
This digest contains the papers presented at the 2002 Symposium on Optical Fiber Measurements, a 2-1/2 day forum devoted to measurements of fibers, integrated optics, components and systems. Topics covered include measurement of polarization-mode

Templating of Inorganic Nanoparticles by PAMAM/PEG Dendrimer-Star Polymers

September 1, 2002
Author(s)
R C. Hedden, Barry J. Bauer, A P. Smith, Franziska Grohn, Eric J. Amis
Star polymers with a narrow distribution of sizes were labeled with fluorescent CdS nanoparticles, creating a new class of fluorescent probe molecules. Highly branched star polymers were prepared by attachment of poly(ethylene glycol) (PEG) arms to poly

Terrain Aided Localization of Autonomous Vehicles

September 1, 2002
Author(s)
Rajmohan Madhavan
This paper describes the development of a terrain-aided localization framework for autonomous land vehicles operating at high speeds in unstructured, expansive and harsh environments. The localization framework developed is sufficiently generic to be used

The Flying Carpet: A Tool to Improve Ship Repair Efficiency

September 1, 2002
Author(s)
Roger V. Bostelman, William P. Shackleford, Frederick M. Proctor, James S. Albus, Alan M. Lytle
NIST is working directly with industry to improve repair and conversion operations of ships in dry dock. The technology discussed is applicable to shipbuilding, aircraft maintenance, construction, and other industries requiring worker-access to large

Thermal and Flammability Properties of Polypropylene-Carbon Nanotube Composites

September 1, 2002
Author(s)
Takashi Kashiwagi, E A. Grulke, J N. Hilding, Richard H. Harris Jr., W H. Awad, Jack F. Douglas
Nanocomposites based on polypropylene and carbon nanotubes (up to 2 vol.-%) were melt blended, yielding good dispersion of the nanotubes without using any organic treatment or additional additives. Carbon nanotubes enhance the thermal stability of

Threshold Resonance Spectroscopy: A Key to Cold Collision Physics

September 1, 2002
Author(s)
Paul S. Julienne
Threshold scattering resonances play a crucial role in cold collision physics and cold molecule formation from cold atoms. We describe several examples involving magnetic Feshbach spectroscopy of Cs atoms, photoassociation of Na atoms in a Bose-Einstein

Tolerancing Form Deviations for Rockwell Diamond Indenters

September 1, 2002
Author(s)
Jun-Feng Song, Samuel R. Low III, Li Ma
The spherical tip of Rockwell diamond indenters tends to be manufactured either a flat- or sharp-shaped surface because of the anisotropy property of the diamond. This can cause significant differences in the hardness readings. In order to control that

Towards the Ultimate Construction Site Sensor

September 1, 2002
Author(s)
William C. Stone, Maris Juberts
The NIST Construction Metrology and Automation Group (CMAG), in cooperation with the NIST Intelligent Systems Division (ISD), is developing performance metrics and researching issues related to the design and development of a Next Generation LADAR sensor

Transport of Quantum States and Separation of Ions in a Dual RF Ion Trap

September 1, 2002
Author(s)
Mary A. Rowe, A. Ben-Kish, B. DeMarco, D. Leibfried, V. Meyer, James A. Beall, J. Britton, J. Hughes, Wayne M. Itano, Branislav M. Jelenkovic, C. Langer, T. Rosenband, David J. Wineland
We have investigated ion dynamics associated with a dual linear ion trap where ions can be stored in and moved betweenn two distinct locations. Such a trap is a building block for a system to engineer arbitrary quantum states of ion ensembles. Specifically

Two Primary Standards for Low Flows of Gases

September 1, 2002
Author(s)
Robert F. Berg, S A. Tison
We describe two primary standards for gas flow in the range from 0.1 to 1000 mol/s. (1 mol/s =1.3448 standard cubic centimeters per minute.) The first standard is a volumetric technique in which measurements of pressure, volume, temperature, and time are

U.S. Government Use of Conformity Assessment

September 1, 2002
Author(s)
Belinda L. Collins
U.S. Federal Agencies use multiple approaches to both laboratory accreditation and conformity assessment programs, as they carry out their regulatory and mission responsibilities. Because the U.S. does not have broad, cross-cutting laws on standardization

Water Closet Extraction Test Acceptance Criteria-Missing Links

September 1, 2002
Author(s)
L S. Galowin, T M. Kenney
Performance data for water closet (WC) extraction laboratory evaluation methods applied for acceptable pass/fail criteria with mixed media waste solids is reviewed. Proposed test criteria require data that provide statistical reliability and assurance of

Wavelength Standards in the Ultraviolet

September 1, 2002
Author(s)
Gillian Nave, Craig J. Sansonetti
We have made accurate wavelength measurements for lines of Pt 1 and II, Fe I, Ge I, and Kr II in the region 1800 to 3100 . New microlithography tools that are currently coming into production use are based on the ArF excimer laser which operates at a
Displaying 42826 - 42850 of 73779
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