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Conferences

PRACTICAL METHOD FOR MEASUREMENT OF AC-DRIVEN HIGH-POWER LEDS

July 14, 2008

Author(s)

Yuqin Zong, Yoshihiro Ohno, Pei-ting Chou

Alternating-current (AC) driven high-power LEDs are available and used in SSL products. AC LEDs operate directly from a mains supply and thus have advantages in...

Conformance Testing and Interoperability: A Case Study in Healthcare Data Exchange

July 14, 2008

Author(s)

Robert D. Snelick, Leonard E. Gebase, Mark Skall

Correct data exchange is critical for ensuring reliable healthcare systems. Standards based systems are the foundation for achieving this goal. However...

Generating Network Models Using the S-Metric

July 14, 2008

Author(s)

Isabel M. Beichl, Brian D. Cloteaux

The ability to create random models of real networks is useful for understanding the interactions of the networks. Several researchers have proposed modeling of...

Applications of highly coherent femtosecond fiber lasers

July 13, 2008

Author(s)

Nathan R. Newbury, Ian R. Coddington, William C. Swann

Coherent, broadband fiber lasers produce pulse trains with <1 femtosecond relative timing uncertainty and <1 mHz relative frequency uncertainty. These sources...

REPRESENTING LAYOUT INFORMATION IN THE CMSD SPECIFICATION

July 9, 2008

Author(s)

Frank H. Riddick, Yung-Tsun T. Lee

Developing mechanisms for the efficient exchange of information between simulations and other manufacturing tools is a critical problem today. For many areas of...

Statistical Learning Methods for Neutron Transmission Tomography of Fuel Cells

July 8, 2008

Author(s)

Kevin Coakley, Dominic F. Vecchia, Daniel S. Hussey

In a fuel cell, water is formed as a by-product of the reaction between hydrogen and oxygen. As a neutron beam passes through a fuel cell, it can undergo s-wave...

Spatial-Temporal Correlations at the Onset of Flow in Concentrated Suspensions

July 7, 2008

Author(s)

Nicos Martys, Didier Lootens, William L. George, Steven G. Satterfield, Pascal Hebraud

Spatial-temporal correlations in the startup-up flow of colloidal suspensions composed of attractive spherical particles under static and shear conditions are...

Stationary and non-stationary deformations in three-flat tests

July 7, 2008

Author(s)

Ulf Griesmann, Quandou (. Wang, Nicolas Laurenchet, Johannes A. Soons

Calibration procedures for optical reference flats of phase-shifting interferometers (three-flat tests) are critically important if flatness measurements with...

NIST Goniospectrometer for Surface Color Measurements

July 7, 2008

Author(s)

Maria E. Nadal, Gael Obein

The goniospectrometer at the National Institute of Standards and Technology (NIST) can measure the spectral reflectance of colored samples over a wide range of...

Stress chains formation under shear of concentrated suspension

July 7, 2008

Author(s)

Didier Lootens, Nicos Martys, William L. George, Steven G. Satterfield, Pascal Hebraud

Results comparing experiments on a model system of mono-disperse silica-particles with the numerical simulation of highly concentrated suspension of spherical...

Photon pair generation in dispersion-shifted fiber with nearly complete suppression of raman photons

July 6, 2008

Author(s)

Shellee D. Dyer, Lenson Pellouchoud, Martin J. Stevens, Burm Baek, Sae Woo Nam, Robert Hadfield

We show photon pair generation from spontaneous four-wave mixing in dispersion-shifted fiber. By cooling the fiber to 4 K, we achieve almost complete...

Anisotropic Behavior of X100 Pipeline Steel

July 6, 2008

Author(s)

John M. Treinen, William E. Luecke, Joseph D. McColskey, Philippe P. Darcis, Yong-Yi Wang

While steel is generally treated as being isotropic, tensile and compression tests in the different pipe orientations for API X100 grade pipeline steel show...

Chamber Imaging Using Spherical Near-Field Scanning

July 5, 2008

Author(s)

Ronald C. Wittmann, Michael H. Francis, Randy Direen

We discuss recent measurements performed at the National Institute of Standards and Technology (NIST) that were used to characterize the incident fields within...

Computer-Based Monitoring for Decision Support Systems and Disaster Preparedness in Buildings

July 2, 2008

Author(s)

Alan B. Vinh

The operation of modern buildings can support a vast amount of static and real-time data. Static information such as building schematics is vital for security...

Nanowire-based superconducting single-photon detectors for infrared single-photon source characterization

July 2, 2008

Author(s)

Martin J. Stevens, Burm Baek, Richard P. Mirin, Sae Woo Nam, Robert Hadfield

Single-photon sources and detectors enable a wide range of applications, from quantum information technologies to fundamental tests of quantum optics...

Advanced Power Conditioning System Technologies for High-Megawatt Fuel Cell Power Plants

July 1, 2008

Author(s)

Allen R. Hefner Jr.

High-megawatt Power Conditioning Systems (PCSs) are required to convert the low-voltage produced by fuel cell modules in central station scale plants to the...

Performance Evaluation of Phasor Measurement Systems

July 1, 2008

Author(s)

Zhenyu Huang, Bogdan Kasztenny, Vahid Madani, Ken Martin, Sakis Meliopoulos, Damir Novosel, Gerard N. Stenbakken

Abstract--After two decades of phasor network deployment, phasor measurements are now available at many major substations and power plants. The North American...

Error and Transient Analysis of Stepwise-Approximated Sinewaves Generated by Programmable Josephson Voltage Standards

July 1, 2008

Author(s)

Charles J. Burroughs, Alain Rufenacht, Samuel Benz, Paul Dresselhaus, Bryan C. Waltrip, Thomas L. Nelson

We are developing a quantum-based 60 Hz power standard that exploits the precision sinusoidal reference voltages synthesized by programmable Josephson voltage...

A Framework for Measuring the Vulnerability of Hosts

June 30, 2008

Author(s)

Karen A. Scarfone, Timothy Grance

This paper proposes a framework for measuring the vulnerability of individual hosts based on current and historical operational data for vulnerabilities and...

Systematic-Error Signals in the AC Josephson Voltage Standard: Measurement and Reduction

June 30, 2008

Author(s)

Regis Landim, Samuel P. Benz, Paul D. Dresselhaus, Charles J. Burroughs

We investigate the dominant frequency-dependent systematic error signals (SES) in the ac Josephson voltage standard. We describe our error measurement technique...

Applying Automated Metrics to Speech Translation Dialogs

June 30, 2008

Author(s)

Sherri Condon, Jon Phillips, Christy Doran, John Aberdeen, Dan Parvaz, Beatrice Oshika, Gregory A. Sanders, Craig I. Schlenoff

Over the past five years, the Defense Advanced Research Projects Agency (DARPA) has funded development of speech translation systems for tactical applications...

Finite element Analysis and Empirical Solution for Flexible Substrates Undergoing Large Equibiaxial Strains

June 25, 2008

Author(s)

Martin Y. Chiang, Tianle Cheng, Lisa Pakstis, Juan M. Taboas, Joy P. Dunkers

Quantitation of Laminin Adsorbed onto Flexible Substrates Using Various Treatment Protocols

June 25, 2008

Author(s)

Hae-Jeong Lee, Marvi Matos, Lisa Pakstis, Marcus T. Cicerone, Joy Dunkers

There is considerable interest in how cells respond to mechanical stimuli, from the ligands used to transmit the stimulus to the signaling pathways initiated to...

A Real World Pilot implementation of the Core Manufacturing Simulation Information Model

June 23, 2008

Author(s)

Swee K. Leong, Marcus Johansson, Bj?rn Johansson, Yung-Tsun T. Lee, Frank H. Riddick

While software for discrete event simulation (DES) has emerged into sophisticated tools for decision support in a wide range of contexts, the need to integrate...

Model Based Uncertainty Analysis in Inter-Laboratory Studies

June 23, 2008

Author(s)

Blaza Toman, Antonio M. Possolo

Statistical analysis of key comparison and inter-laboratory experiments is required to produce an estimate of the measurand called a reference value and further...

Smoke Control and Occupant Evacuation at the World Trade Center

June 21, 2008

Author(s)

M J. Ferreira, S M. Strege, Richard Peacock, Jason D. Averill

This paper examines smoke control and occupant evacuation in WTC 1 and WTC 2 on September 11, 2001focusing on the impact region and above for each tower...

Semi-Classical Line Shape Models of Rovibrational H2O Spectra Tested Using Frequency-Stabilized Cavity Ring-Down Spectroscopy

June 20, 2008

Author(s)

Joseph T. Hodges, Daniel Lisak, R. Ciurylo

In this work we present a brief review of recent results for water line shapes obtained by means of the frequency stabilized cavity ring-down spectroscopy (FS...

Electron Trapping: An Unexpected Mechanism of NBTI and Its Implications

June 17, 2008

Author(s)

Jason P. Campbell, Kin P. Cheung, John S. Suehle, A Oates

We utilize fast-IdVg measurements to examine NBTI recovery over a time scale of 2usecs to 1000 seconds. The extracted DVTH and %GM degradation data clearly...

Contradictions and Justifications: Extensions to the Textual Entailment Task

June 16, 2008

Author(s)

Ellen M. Voorhees

The third PASCAL Recognizing Textual Entailment Challenge (RTE-3) contained an optional task that extended the main entailment task by requiring a system to...

Evaluation of Nonlinear Distortion in ADCs Using Multisines

June 15, 2008

Author(s)

Catherine A. Remley, Nuno Carvalho, Pedro Cruz

This paper characterizes nonlinear distortion in an analog-to-digital converter (ADC) when it is excited by representative communication signals having non...

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