Journals

Maximum Likelihood Estimation for an Observation Driven Model for Poisson Counts

January 28, 2005

Author(s)

Richard D. Davis, William T. Dunsmuir, Sarah B. Streett

This paper is concerned with an observation driven model for time series of counts whose conditional distribution given past observations follows a Poisson...

A superconductor-insulator-normal metal bolometer with microwave readout suitable for large-format arrays

January 28, 2005

Author(s)

D. R. Schmidt, Anna Clark, William Duncan, Kent D. Irwin, Nathan A. Tomlin, Joel Ullom, Konrad Lehnert

We demonstrate high bandwidth and low noise readout of a superconductor-insulator-normal metal-insulator-superconductor hot-electron bolometer element. We...

Microwave transitions and nonlinear magneto-optical rotation in anti-relaxation-coated cells

January 27, 2005

Author(s)

D Budker, Leo W. Hollberg, Derek F. Kimball, John E. Kitching, S Pustelny, V V. Yashchuk

Using laser optical pumping, widths and frequency shifts are determined for microwave transitions between ground-state hyperfine components of {8s}Rb and d{87...

A Study of Liquid Metal Atomization Using Close-Coupled Nozzles, Part 2: Atomization Behavior

January 24, 2005

Author(s)

Steven P. Mates, G S. Settles

In this paper we examine the gas dynamic and atomization behavior of a convergent and a converging-diverging (c-d) close-coupled nozzleused to fabricate fine...

A Study of Liquid Metal Atomization Using Close-Coupled Nozzles, Part I: Gas Dynamic Behavior

January 24, 2005

Author(s)

Steven P. Mates, G S. Settles

Experiments are conducted to examine the gas dynamic and atomization behavior of a convergent and a converging-divering (c-d) close-coupled nozzle used to...

Effect of Bulk Lubricant Concentration on the Excess Surface Density During R134a Pool Boiling

January 21, 2005

Author(s)

Mark A. Kedzierski

This paper investigates the effect that the bulk lubricant concentration has on the non-adiabatic lubricant excess surface density on a roughened, horizontal...

Rapid heating of a strongly coupled plasma at the solid-liquid phase transition

January 21, 2005

Author(s)

M J. Jensen, T Hasegawa, John Bollinger, Daniel H. Dubin

Between 10 4 and 10u6 A9Be^+ ions were trapped in a Penning trap and laser-cooled to siml K, where they formed a crystalline plasma. We measured the ion...

Carbon multi-walled nanotubes grown by HWCVD on a pyroelectric detector

January 21, 2005

Author(s)

John H. Lehman, Rohit Deshpande, Paul Rice, Bobby To, Anne Dillon

Carbon multi-wall nanotubes (MWNTs) were grown on a lithium niobate (LiNbO3) pyroelectric detector with a nickel film as the catalyst by hot-wire chemical vapor...

Generation of Lattice Wannier Functions via Maximum Localization

January 20, 2005

Author(s)

Eric J. Cockayne

A method is presented for generating approximate lattice Wannier functions (LWF) for lattice dynamics problems, using the dynamical matrix for a supercell as...

The effect of dissolved water on the viscosities of hydrophobic room-temperature ionic liquids

January 20, 2005

Author(s)

Jason A. Widegren, Arno D. Laesecke, Joe W. Magee

Viscosity vs. water content data for three hydorphobic room-temperature ionic liquids show that their viscosity is strongly dependent on the amount of dissolved...

Design, Development and Testing of a Hybrid Device for In-Situ Testing of Sealant

January 19, 2005

Author(s)

Christopher C. White, E Embree, C Buch

A new hybrid in-situ sealant-testing device that uses movement to both characterize and fatigue standard ASTM C719 sealant samples is described. This five...

Chemical, Magnetic and Charge Ordering in the System Hematite-Ilmenite, Fe2O3-FeTiO3

January 17, 2005

Author(s)

Benjamin P. Burton, Anne M. Chaka, D J. Singh

Characterization of Ceramics by X-Ray and Neutron Small-Angle Scattering

January 16, 2005

Author(s)

Andrew J. Allen

Secondary ion mass spectrometry measurements of isotopic ratios: Correction for time varying count rates

January 15, 2005

Author(s)

Kevin Coakley, A M. Leifer, David S. Simons

In Secondary Ion Mass Spectrometry measurement systems, the count rate of isotopes may vary in time as a particle is consumed during the analysis. Since only...

Uncertainty reporting for experimental thermodynamic properties

January 13, 2005

Author(s)

Qian Dong, Robert D. Chirico, Xinjian Yan, X Hong, Michael D. Frenkel

This paper reviews practices in the expression of uncertainty in the experimental literature for thermodynamic property measurements with determinations of...

Solvent-Dependent Assembly of Terphenyl- and QuaterphenyIdithiol on Gold and Gallium Arsenide

January 12, 2005

Author(s)

D Krapchetov, H Ma, AKY Jen, Daniel A. Fischer, Y-L Loo

The assembly of terphenyldithiol (TPDT) and quaterphenyldithiol (QPDT) on gold and gallium arsenide from ethanol (EtOH), tetrahydrofuran (THF), and solutions...

Enhanced Low-Temperature CO Oxidation on a Stepped Platinum Surface for Oxygen Pressures Above 10-5 Torr

January 12, 2005

Author(s)

H D. Lewis, D J. Burnett, A M. Gabelnick, Daniel A. Fischer, J L. Gland

Method for Estimating the Dielectirc Constant of Natural Gas Mixtures

January 11, 2005

Author(s)

Allan H. Harvey, Eric W. Lemmon

A method is developed for calculating the static dielectric constant (relative permittivity) of fluid mixtures, with an emphasis on natural gas. The dielectric...

Method for estimating the dielectric constant of natural gas mixtures

January 11, 2005

Author(s)

Allan H. Harvey, Eric Lemmon

A method is developed for calculating the static dielectric constant (relative permittivity) of fluid mixtures, with an emphasis on natural gas. The dielectric...

Investigation of the Charge Compensation Mechanism on the Electrochemically Li-Ion Deintercalated Li_1-xCo_1/3Ni_1/3MN_1/3O₂ Electrode System by Combination of Soft and Hard X-Ray Absorption Spectroscopy

January 11, 2005

Author(s)

W S. Yoon, Kyung Y. Chung, Xiao-Qing Yang, James McBreen, Mahalingam Balasubramanian, C P. Grey, Daniel A. Fischer

In situ hard X-ray absorption spectroscopy (XAS) at metal K-edges and soft XAS at O K-edge and metal L-edges have been carried out during the first charging...

Mechanism of Acetylene Oxidation on the Pt(111) Surface using in situ Fluorescence Yield Near-Edge Spectroscopy

January 10, 2005

Author(s)

D J. Burnett, A M. Gabelnick, J L. Gland, Daniel A. Fischer

In-situ studies of acetylene oxidation on Pt(111) have been performed using both fluorescence yield near edge spectroscopy (FYNES) and temperature-programmed...

A Coupled Arc and Droplet Model of GMAW

January 8, 2005

Author(s)

Timothy P. Quinn, M Szanto, T Gilad, I Shai

A model of gas metal arc welding was developed that solves the magneto-hydrodynamic equations for the flow and temperature fields of the molten electrode and...

Temperature Variation of the Fluctuation Field in Co/Pt

January 7, 2005

Author(s)

S Rao, Edward Della Torre, Lawrence H. Bennett, H. Seyoum, R E. Watson

Measurements of the fluctuation field of a Co/Pt multilayer medium were carried out from 4 K to roomtemperature, using a procedure that for each holding field...

Simple flow meter and viscometer of high accuracy for gases

January 6, 2005

Author(s)

Robert F. Berg

A model and supporting measurements are presented for the laminar flow of gases through a long capillary with a circular cross section. Using the model with a...

QR Factorizations Using a Restricted Set of Rotations

January 6, 2005

Author(s)

Dianne M. O'Leary, Stephen Bullock

Any matrix of dimension m x n (m greater than or equal to n) can be reduced to upper triangular form by multiplying by a sequence of mn - n(n + 1) / 2...

Antisymmetric Magnetoresistance in Magnetic Multilayers With Perpendicular Anisotropy

January 6, 2005

Author(s)

X M. Cheng, Sergei Urazhdin, T Tchernyshyov, C L. Chien, Valerian I. Nikitenko, Alexander J. Shapiro, Robert D. Shull

While magnetoresistance (MR) has generally been found to be symmetric in applied field H in non-magnetic or magnetic metals, we have observed antisymmetric MR...

System Performance and Natural Language Expression of Information Needs

January 5, 2005

Author(s)

Walter S. Liggett Jr, C E. Buckley

Consider information retrieval systems that respond to a query (a natural language statement of a topic, an information need) with an ordered list of 1000...

Degradation of Poly(Acrylates)Under SF₅⁺ Primary Ion Bombardment Studied Using Time of Flight Secondary Ion Mass Spectrometry 2. Poly(n-Alkyl Methacrylates)

January 5, 2005

Author(s)

M S. Wagner

Polyatomic primary ions offer low penetration depth and high damage removal rates in some polymers, facilitating their use in the molecular depth profiling of...

Analysis of Wasp Waist Hysteresis Loops

January 3, 2005

Author(s)

Lawrence H. Bennett, Edward Della Torre

Wasp-waist and pot belly hysteresis loops have been observed in many materials. When only the major loop is reported, the results are insufficient to establish...

Obstacle Detection using a TOF Range Camera* for AGV Safety and Navigation

January 3, 2005

Author(s)

Roger V. Bostelman, Tsai Hong Hong, Rajmohan Madhavan

The performance evaluation of an obstacle detection and segmentation algorithm for Automated Guided Vehicle (AGV) navigation in factory-like environments using...