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Displaying 31376 - 31400 of 143797

Towards Repeatable, Reproducible, and Efficient Biometric Technology Evaluations

August 18, 2015

Author(s)

Gregory P. Fiumara, Wayne J. Salamon, Craig I. Watson

With the proliferation of biometric-based identity management solutions, biometric algorithms need to be tested now more than ever. Independent biometric technology evaluations are needed to perform this testing, but are not trivial to run, as demonstrated

Utilizing Vapor Swelling of Surface-Initiated Polymer Brushes to Develop Quantitative Measurements of Brush Thermodynamics and Grafting Density

August 18, 2015

Author(s)

Sara V. Orski, Richard J. Sheridan, Edwin P. Chan, Kathryn L. Beers

The stimuli-responsive behavior of densely grafted polymer brushes makes them attractive for designing tunable coatings and thin film sensors, provided physical properties and thermodynamics of the brush are well characterized. This work investigates the

10 V Programmable Josephson Voltage Standard and its Application in Direct Comparison with the Conventional Josephson Voltage Standard

August 17, 2015

Author(s)

Yi-hua D. Tang, James Wachter, Alain Rufenacht, Gerald J. FitzPatrick, Samuel P. Benz

This paper briefly describes the working principle of the 10 V programmable Josephson voltage standard (PJVS) that was developed at the National Institute of Standards and Technology (NIST) and how to use it in a direct comparison with a conventional

Classification of Semiconducting Polymeric Mesophases to Optimize Device Post-Processing

August 17, 2015

Author(s)

Chad R. Snyder, Regis J. Kline, Dean M. DeLongchamp, Ryan C. Nieuwendaal, Lee J. Richter, Martin Heeney, Iain McCulloch

Semiconducting polymers form a variety of phases and mesophases that respond differently to post-deposition solvent or thermal treatments. Here it is shown that classification of these materials into their appropriate mesophases can be a useful tool to

Constraints on Exotic Dipole-Dipole Couplings between Electrons at the Micrometer Scale

August 17, 2015

Author(s)

Shlomi Salman Kotler, R. Ozeri, Derek F. Kimball

New constraints on exotic dipole-dipole interactions between electrons at the micrometer scale are established, based on a recent measurement of the magnetic interaction between two trapped 88Sr+ ions. For light bosons (mass ≤ 0.1 eV) we obtain 90%

Evaluation of two mitochondrial DNA biomarkers for prostate cancer detection

August 17, 2015

Author(s)

Samantha D. Maragh, Steven P. Lund

BACKGROUND: A 3.4kb deletion (3.4kbΔ) in mitochondrial DNA (mtDNA) found in histologically normal prostate biopsy specimens has been reported to be a biomarker for the increased probability of prostate cancer. Increased mtDNA copy number is also reported

Influence of Electron Doping on the Ground State of (Sr 1-x La x ) 2 IrO 4

August 17, 2015

Author(s)

Xiang Chen, Tom Hogan, D. Walkup, Wenwen Zhou, M. Pokharel, Mengliang Yao, Wei Tian, Thomas Z. Ward, Yang Zhao, Daniel E. Parshall, C. Opeil, Jeffrey W. Lynn, Vidya Madhavan, Stephen D. Wilson

The evolution of the electronic properties of electron-doped (Sr 1-xLa x) 2IrO 4 is experimentally explored as the solubility limit of La is approached. As electrons are introduced, the electronic ground state transitions from a spin-orbit Mott phase into

Long-Term Stability of One-Inch Condenser Microphones Calibrated at the National Institute of Standards and Technology

August 17, 2015

Author(s)

Randall P. Wagner, William F. Guthrie

The devices calibrated most frequently by the acoustical measurement services at the National Institute of Standards and Technology (NIST) over the 50-year period from 1963 to 2012 were one-inch condenser microphones of three specific standard types: LS1Pn

Magnetic mean-field modeling of solid solutions: Theoretical foundations with application to the hematite-ilmenite system

August 17, 2015

Author(s)

Karl Fabian, V P. Shcherbakov, S. McEnroe, P. Robinson, Benjamin P. Burton

By rigorously deriving A spatially averaged mean-ﬁeld model for fully or partially ordered members of the ilmenite-hematite solid solution series is rigorously derived from the Heisen-berg Hamiltonian by ﬁrst assuming no temporal correlation of atomic

Methods of Photoelectrode Characterization with High Spatial and Temporal Resolution

August 17, 2015

Author(s)

Thomas P. Moffat

Materials and photoelectrode architectures that are highly efficient, extremely stable, and made from low cost materials are required for commercially viable photoelectrochemical (PEC) water-splitting technology. A key challenge is the heterogeneous nature

Proximity-Driven Enhanced Magnetic Order at Ferromagnetic-Insulator-Magnetic-Topological Insulator Interface

August 17, 2015

Author(s)

Mingda Li, Cui-Zu Chang, Brian Kirby, Michelle E. Jamer, Wenping Cui, Lijun Wu, Peng Wei, Yimei Zhu, Don Heiman, Ju Li, Jagadeesh S. Moodera

Magnetic exchange driven proximity effect at a magnetic insulator/topological insulator (MI/TI) interface provides a rich playground for novel phenomena as well as a way to realize low energy dissipation quantum devices. Here we report a dramatic

Technical Basis for User Interface Design of Health IT

August 17, 2015

Author(s)

Michael E. Wiklund, Jonathan Kendler, Limor Hochberg, Matthew B. Weinger

This document is intended to help EHR developers plan and implement a user-centered design for their EHR systems. It includes user interface design principles that are customized for EHR environment. Specifically, it provides: (1) Descriptions of the

Atom-based RF electric field measurements: An initial investigation of the measurement uncertainties

August 16, 2015

Author(s)

Christopher L. Holloway

We discuss a new method for the measurement of electric (E) fields that will lead to a self-calibrating, direct SI-traceable E-field probe. The technique is based on radio frequency field interactions with alkali atoms placed in glass cells. After we

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