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Displaying 27326 - 27350 of 73929

Attacking Paper-Based E2E Voting Systems

February 1, 2010
Author(s)
John M. Kelsey, Andrew R. Regenscheid, Tal Moran, David Chaum
In this paper, we develop methods for constructing vote-buying/coercion attacks on end-to-end voting systems, and describe vote-buying/coercion attacks on three end-to-end voting systems: Punchscan, Pret-a-Voter, and Threeballot. We also demonstrate a

Characterization of SiGe Films for use as a National Institute of Standards and Technology (NIST) Microanalysis Reference material (RM 8905)

February 1, 2010
Author(s)
Ryna B. Marinenko, Shirley Turner, David S. Simons, Savelas A. Rabb, Rolf L. Zeisler, Lee L. Yu, Dale E. Newbury, Rick L. Paul, Nicholas W. Ritchie, Stefan D. Leigh, Michael R. Winchester, Lee J. Richter, Douglas C. Meier, Keana C. Scott, D Klinedinst, John A. Small
Bulk SiGe wafers cut from single-crystal boules and two SiGe thick films (4 m and 5 m thick) on Si wafers were evaluated with the electron probe microanalyzer for the extent of heterogeneity and composition for use as reference materials needed by the

Complete Inspection: In-situ system to inspect 100% of micro-parts

February 1, 2010
Author(s)
Shawn P. Moylan
On-machine measurement can provide significant advantages in part metrology at the micro/meso-scale. The strengths of measurement by fringe projection techniques directly address the difficulties presented by on-machine measurement. An experimental setup

Electrically-stimulated gradients in water and counterion concentrations within electroactive polymer actuators

February 1, 2010
Author(s)
Jong Keun Park, Paul J. Jones, Chris Sahagun, Kirt A. Page, Daniel S. Hussey, David L. Jacobson, Sarah E. Morgan, Robert B. Moore
While ionic polymer metal composites (IPMCs) have been studied for more than 10 years, the specific actuation mechanism is still unclear. In this work, neutron imaging, applied potential (AP) and current sensing (CS) atomic force microscopy (AFM) methods

NIST HB 105-4, Specifications and Tolerances for Reference Standards and Field Standard Weights and Measures 4. Specifications and Tolerances for Liquefied Petroleum Gas and Anhydrous Ammonia Pressurized Volumetic Field Standards

February 1, 2010
Author(s)
Georgia L. Harris, L.F. Eason
These specifications and tolerances are recommended as minimum requirements for standards used by state and local weights and measures officials and others in the regulatory verification of meters used in quantity determination of pressurized liquid

Sensitivity Comparison of Mx and Frequency Modulated Bell-Bloom Cs Magnetometers in a Micro-Fabricated Cell

February 1, 2010
Author(s)
Ricardo Jimenez Martinez, William C. Griffith, Ying-ju Wang, Svenja A. Knappe, John E. Kitching, Ken Smith, Mark Prouty
We compare the sensitivity performance of two optically pumped atomic magnetometers based on the Mx and frequency-modulated Bell-Bloom configurations. The Cs magnetometers are implemented using a millimeter-scale microfabricated vapor cell in a

The Need for Behavioral Theory in Evacuation Modeling

February 1, 2010
Author(s)
Erica D. Kuligowski, Steve M. Gwynne
This paper posits the need for comprehensive theories about human behavior in fire evacuations. These would be of value in and of themselves to improve training, education, and future data collection efforts, but would also allow for a complete behavioral

Three steps towards metrological traceability for ballistics signature measurements

February 1, 2010
Author(s)
Jun-Feng Song, Theodore V. Vorburger, Robert M. Thompson, Thomas Brian Renegar, Xiaoyu Alan Zheng, Li Ma, James H. Yen, Martin Ols
The National Institute of Standards and Technology (NIST) in collaboration with the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) has developed the Standard Reference Material (SRM) 2460 bullets and 2461 casings. NIST and ATF are proposing to

Three-Dimensionally Structured Thin Film Heterojunction Photovoltaics on Interdigitated Back-Contacts

February 1, 2010
Author(s)
Daniel Josell, Carlos R. Beauchamp, Behrang H. Hamadani, Suyong S. Jung, Jonathan E. Guyer, Abhishek Motayed, Carlos M. Hangarter, Nadine E. Gergel-Hackett, Hua Xu, Nikolai B. Zhitenev
Fabrication and properties of three-dimensionally structured back-contact heterojunction solar cells are described. A variety of devices are explored, all of which were fabricated by electrochemical deposition of a semiconducting material on one of two

Wildfire Prevention Efficacy: Marginal and Non-marginal Benefit-Cost Ratios

February 1, 2010
Author(s)
Jeffrey P. Prestemon, David Butry, Karen L. Abt, Rhonda Sutphen
Fire prevention education efforts involve a variety of methods intended to reduce the number of accidentally ignited wildfires, including public service announcements, distributing brochures and making presentations. A Poisson model of Florida fire

NIST HB 105-3, Specifications and Tolerances for Reference Standards and Field Standard Weights and Measures, 3. Specifications and Tolerances for Graduated Neck Type Volumetric Field Standards

January 31, 2010
Author(s)
Georgia L. Harris, L.F. Eason
These specifications and tolerances are recommended as minimum requirements for standards used by state and local weights and measures officials and others in the regulatory verification of meters used in quantity determination of liquid commodities. Other

Infrared time domain spectroscopy with synchronized frequency combs

January 29, 2010
Author(s)
Nathan R. Newbury, Ian R. Coddington, William C. Swann
We describe a frequency-comb based system for time-domain spectroscopy in the near infrared. Our configuration implements synchronous, repetitive sampling of the time domain signature for real-time coherent signal averaging and improved signal-to-noise

Office of Law Enforcement Standards 2-Year Road Map, FY2009-2011

January 29, 2010
Author(s)
Mark D. Stolorow
This document constitutes the 2-Year Road Map FY 2009 - 2011 for the Office of Law Enforcement Standards (OLES), Electronic and Electrical Engineering Laboratory (EEEL), National Institute of Standards and Technology.

Office of Law Enforcement Standards Strategic Planning FY2009-2018.

January 29, 2010
Author(s)
Mark D. Stolorow
This document constitutes the ten-year Strategic Plan for FY2009-2018 for the Office of Law Enforcement Standards (OLES), Electronic and Electrical Engineering Laboratory (EEEL), National Institute of Standards and Technology.

Rationales and Mechanisms for Revitalizing US Manufacturing R&D Strategies

January 29, 2010
Author(s)
Gregory C. Tassey
The race to economic superiority is increasingly occurring on a global scale. Competitors from different countries are employing new types of growth strategies in attempts to win that race. The United States cannot, therefore, continue to rely on outdated

Spin-transfer dynamics in spin valves with out-of-plane magnetized CoNi free layers

January 29, 2010
Author(s)
William H. Rippard, Alina M. Deac, Matthew R. Pufall, Justin M. Shaw, Mark W. Keller, Stephen E. Russek, Gerrit E. Bauer, Claudio Serpico
We have measured spin-transfer-induced dynamics in magnetic nanocontact devices having a perpendicularly magnetized Co/Ni free layer and an in-plane magnetized CoFe fixed layer. The frequencies and powers of the excitations agree well with the predictions

Quantum Computing

January 28, 2010
Author(s)
Emanuel H. Knill
Imagine a computer that can exploit quantum mechanics to solve previously intractable problems in physics, mathematics and cryptography. Such a quantum computer would revolutionize computing technology while teaching us about fundamental physics and ways
Displaying 27326 - 27350 of 73929
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