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Journals

Time and frequency dissemination using GPS: Recent improvements

November 1, 2004

Author(s)

Tom Parker, Demetrios Matsakis

This is an article for a general audience that reviews recent imporvements in time and frequency delivery by the Global Positioning System (GPS). A significant...

Direct Combined ab Initio/Transition State Theory Study of the Kinetics of the Abstraction Reactions of Halogenated Methanes With Hydrogen Atoms

November 1, 2004

Author(s)

F Louis, Carlos A. Gonzalez, J P. Sawerysyn

An Architecture and Interfaces for Distributed Manufacturing Simulation

November 1, 2004

Author(s)

Charles R. McLean, Frank H. Riddick, Yung-Tsun Lee

This paper presents an overview of a neutral reference architecture and data model for integrating distributed manufacturing simulation systems with each other...

How Task Analysis Can Be Used to Derive and Organize the Knowledge for the Control of Autonomous Vehicles

November 1, 2004

Author(s)

Anthony J. Barbera, James S. Albus, Elena R. Messina, Craig I. Schlenoff, John A. Horst

Knowledge Representation For A Trash Collecting Robot: Results From The 2004 AAAI Spring Symposium

November 1, 2004

Author(s)

Stephen B. Balakirsky, Elena R. Messina, Craig I. Schlenoff, Stephen J. Smith, M Uschold

The attendees of the Knowledge Representation and Ontologies for Autonomous Systems Symposium applied their collective intelligence in an attempt to solve one...

Onotology-Based Methods for Enhancing Autonomous Vehicle Path Planning

November 1, 2004

Author(s)

R Provine, Craig I. Schlenoff, Stephen B. Balakirsky, Stephen J. Smith, M Uschold

Chromatic dispersion measurement error caused by source amplified spontaneous emission

November 1, 2004

Author(s)

Tasshi Dennis, Paul A. Williams

We demonstrate experimentally and theoretically the degrading effect of noise from source amplified spontaneous emission on measurements of chromatic dispersion...

Error Mechanisms and Rates in Tunable-Barrier Single-Electron Turnstiles and CCD's

November 1, 2004

Author(s)

Neil M. Zimmerman, Emmanouel S. Hourdakis

Si-based single-electron tunneling (SET) devices have of late become an important alternative to the metal-based ones, both for general usage and in particular...

R-22 Replacement Status

November 1, 2004

Author(s)

J M. Calm, Piotr A. Domanski

Since its initial recognition in 1928 and commercialization in 1936, R-22 has been applied in systems ranging from the smallest window air conditioners to the...

Virtual Permeametry on Microtomographic Images

November 1, 2004

Author(s)

C H. Arns, M A. Knackstedt, W V. Pinczewski, Nicos Martys

We show that accurate numerical micropermeametry measurements can be performed on three dimensional digitized images of sedimentary rock. The sample size can be...

Effect of Essential Oil and Essential Oil Fluoride Mouthrinses on Plaque Metabolic Acids and pH After a Sucrose Challenge

November 1, 2004

Author(s)

J Z. Zhang, D S. Harper, S Zhou, Gerald L. Vogel, Gary E. Schumacher

This clinical study evaluated the effect of rinsing with essential oil containing antiseptic mouthrinses, with or without 100-ppm fluoride ion, on the plaque...

Microwave Power Imaging with Ferromagnetic Films Incorporated in Bimaterial Cantilevers

November 1, 2004

Author(s)

Thomas Mitchell (Mitch) Wallis, John M. Moreland, Billy F. Riddle, Pavel Kabos

We report an imaging technique that uses ferromagnetic films incorporated in bimaterial cantilevers for spatially resolved calorimetric detection of microwaves...

Design for a multifrequency high magnetic field superconducting quantum interference device-detected quantitative electron paramagnetic resonance probe: Spin-lattice relaxation of cupric sulfate pentahydrate (CuSO₄𔅙H₂O

November 1, 2004

Author(s)

Brant Cage, Stephen E. Russek

We have designed a spectrometer for the quantitative determination of electron paramagnetic resonance (EPR) at high magnetic fields and frequencies. It uses a...

Simplifying and Interpreting Two-Tone Measurements

November 1, 2004

Author(s)

Kate Remley, Dylan Williams, Dominique Schreurs, John Wood

We develop a mathematical description of the response of systems to second-order memory mechanisms based on a time-varying gain modulation function. We show...

In Situ Quasi-Elastic Scattering Characterization of Particle Size Effects on the Hydration of Tricalcium Silicate

November 1, 2004

Author(s)

Andrew J. Allen, J C. McLaughlin, Dan A. Neumann, R. A. Livingston

Sliding Mode Control for Active Vibration Isolation of a Long Range Scanning Tunneling Microscope

October 29, 2004

Author(s)

K J. Lan, James H. Yen, John A. Kramar

An active vibration isolation (AVI) system has been designed and implemented for the Molecular Measuring Machine (M3) at the National Institute of Standards and...

Spin transfer switching of spin valve nanopillars using nanosecond pulsed currents

October 29, 2004

Author(s)

Shehzaad F. Kaka, Matthew Pufall, William Rippard, Thomas J. Silva, Stephen E. Russek, Jordan A. Katine, Matt Carey

Spin valve nanopillars are reversed via the mechanism of spin momentum transfer using current pulses applied perpendicular to the film plane of the device. The...

Micromechanical torque magnetometer with sub-monolayer sensitivity

October 29, 2004

Author(s)

Dong-Hoon Min, Andrew McCallum, Stephen E. Russek, John M. Moreland

We have developed a micromechanical torque sensor with sub-monolayer sensitivity for in situ monitoring of the magnetic moment of thin films during deposition...

IT Security for Industrial Control Systems: Requirements Specification and Performance Testing

October 28, 2004

Author(s)

Joseph A. Falco, James D. Gilsinn, Keith A. Stouffer

The United States Government as well as the industrial controls sector has come to realize that securing computer systems that control industrial production and...

Power Balance in Highly Loaded Fluorescent Lamps

October 28, 2004

Author(s)

G G. Lister, John J. Curry, James E. Lawler

Discrepancies reported in the literature between numerical predictions and experimental measurements in low-pressure Hg discharges at high current densities are...

Control of Protein Adsorption: Molecular Level Structural and Spatial Variables

October 27, 2004

Author(s)

David J. Vanderah, H La, Jessica Naff, Vitalii I. Silin, Kenneth A. Rubinson

Uncertainty and Traceability in Alloy Analysis by Borate Fusion and XRF

October 26, 2004

Author(s)

John R. Sieber, Lee L. Yu, Anthony F. Marlow, Therese A. Butler

Dynamic and static magnetic anisotropy in thin-film cobalt zirconium tantalum

October 26, 2004

Author(s)

John P. Nibarger, R Ewasko, Michael Schneider, Thomas J. Silva

The magnetic anisotropy values of thin amorphous cobalt zirconium tantalum (CZT) films were determined from static and dynamic measurements. Dynamic techniques...

Observation of Quantum Oscillations between a Josephson Phase Qubit and a Microscopic Resonator using Fast Readout

October 25, 2004

Author(s)

Ken Cooper, Matthias Steffen, Robert McDermott, Raymond Simmonds, Seongshik Oh, Dustin Hite, David P. Pappas, John M. Martinis

We have detected coherent quantum oscillations between Josephson phase qubits and microscopic critical current fluctuators by implementing a new state readout...

Temperature Gradient Focusing of Matched and Partially Mismatched DNA/PNA Hybridizations

October 20, 2004

Author(s)

K M. Balss, David J. Ross, Michael J. Tarlov

The hybridization reactions of DNA with peptide nucleic acids (PNA) were monitored in real time with Temperature Gradient Focusing (TGF). Both ex situ and in...

Optical Frequency Measurements of 6s^2S1/2-6p^2P3/2 Transition in ^133 Cs Atomic Beam Using a Femtosecond Laser Frequency Comb

October 20, 2004

Author(s)

Vladislav Gerginov, Scott A. Diddams, A Bartels, Leo W. Hollberg

Dynamic behavior of dagger-shaped atomic force microscope cantilevers

October 20, 2004

Author(s)

K Shen, Donna C. Hurley, J Turner

Experimental techniques based on the atomic force microscope (AFM) have been developed for characterizing mechanical properties at the nanoscale and applied to...

Crystal Chemistry and Crystallography of the Aurivillius Phase Bi₅AgNb₄O₁₈

October 18, 2004

Author(s)

Winnie K. Wong-Ng, Qingzhen Huang, Lawrence P. Cook, Igor Levin, James A. Kaduk, Alan D. Mighell, J Suh

Bi 5AgNb 4O 18 is a new phase, which was discovered during the phase equilibrium study of the Bi 2O 3-Ag 2O-Nb 2O 5 system. Bi 5AgNb 4O 18 was prepared at 750 C...

Wide-Band Slot Antennas with CPW Feed Lines: Hybrid and Log-Periodic Designs

October 11, 2004

Author(s)

Alpesh Bhobe, Christopher L. Holloway, Melinda Piket-May, Richard Hall

In microwave and millimeter wave applications, slot antennas fed by coplanar waveguides (CPW) are receiving increasing attention. These antennas have several...

Controlling the Dynamics of a Single Atom in Lateral Atom Manipulation

October 8, 2004

Author(s)

Joseph A. Stroscio, Robert Celotta

We study the dynamics of a single Co atom during lateral manipulation on a Cu(111) surface in a low temperature scanning tunneling microscope. The Co binding...

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