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Search Publications

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Displaying 21301 - 21325 of 73929

On the Field Evaporation Behavior of c-axis GaN Nanowires in Laser-Pulsed Atom Probe Tomography

June 26, 2013
Author(s)
Matthew D. Brubaker, Kristine A. Bertness, Norman A. Sanford, Brian Gorman, David R. Diercks, R Kirchofer
GaN has seen use in many applications such as photovoltaics, blue and ultraviolet lasers, and light-emitting diodes with additional research into expanded and new applications. GaN in the form of nanowires present additional possibilities due to their high

The impact of turbulence on high accuracy time-frequency transfer across free space

June 26, 2013
Author(s)
Laura C. Sinclair, Fabrizio R. Giorgetta, William C. Swann, Esther Baumann, Ian R. Coddington, Nathan R. Newbury
Atmospheric optical path-length variations are measured across a 2-km optical link through a frequency comb-based system with femtosecond-level precision. Without mitigation, the turbulent piston effect will severely restrict time-frequency transfer from

Applications of Heat Transfer Fundamentals to Fire Modeling

June 25, 2013
Author(s)
Ofodike A. Ezekoye, M J. Hurley, Jose L. Torero, Kevin B. McGrattan
The fire industry relies on fire engineers and scientists to develop materials and technologies used to either resist, detect, or suppress fire. While combustion processes are the drivers for what might be considered to be fire phenomena, it is heat

Comparison and Analysis of Collisional-Radiative Models at the NLTE-7 Workshop

June 25, 2013
Author(s)
Yuri Ralchenko, H.-K. Chung, S Hansen, C. Bowen, C. J. Fontes
We present the main results of the 7th Non-Local Thermodynamic Equilibrium Code Comparison Workshop held in December 2011 in Vienna, Austria. More than twenty researchers from nine countries, who actively work on development of collisional-radiative codes

Forensic Science Laboratories: Handbook for Facility Planning, Design, Construction, and Relocation.

June 25, 2013
Author(s)
James Aguilar, Tom Barnes, Joseph Browne, Yvette Burney, John Byrd, Bonnie Carver, Adam Denmark, Susan Halla, Lou Hartman, Alison Kennedy, Deborah Leben, Greg Matheson, Jim McClaren, Russell McElroy, Romeo Miranda, Kenneth Mohr, Michael Mount, Steve Sigel, Jennifer Smither, Melissa Taylor, Aliece Watts, Shannan Williams
This handbook is a resource for laboratory directors, designers, consultants, and other stakeholders involved in the construction or major renovation of forensic science laboratories. Laboratory construction and renovation projects must meet the unique

The Challenge of Face Recognition From Digital Point-and-Shoot Cameras

June 25, 2013
Author(s)
P J. Phillips, J. R. Beveridge, David Bolme, Bruce A. Draper, Geof H. Givens, Yui M. Lui, Hao Zhang, W T. Scruggs, Kevin W. Bowyer, Patrick J. Flynn, Su L. Cheng
Face recognition is appearing in personal and commercial products at an astonishing rate, yet reliable face recognition remains challenging. Users expect a lot; they want to snap pictures and have their friends, family and acquaintances recognized. This

Evaluation of dome-input geometry for pyroelectric detectors

June 24, 2013
Author(s)
Jinan Zeng, Leonard M. Hanssen, George P. Eppeldauer
Dome-input pyroelectric radiometers with different black coatings were developed to extend the spectral responsivity scale from near infrared (NIR) to 20 μm. The reflective dome with shiny gold-coating has been known to be an efficient light trap to

Harnessing 3D Scattered Optical Fields for sub-20 nm Defect Detection

June 24, 2013
Author(s)
Bryan M. Barnes, Martin Y. Sohn, Francois R. Goasmat, Hui Zhou, Richard M. Silver, Abraham Arceo
Experimental imaging at =193 nm of sub-resolved defects performed at several focus positions yields a volume of spatial and intensity data. Defects are located in a differential volume, given a reference, with up to 5x increase in sensitivity.

OBSERVATIONS ON THE GENERATION OF TOXIC PRODUCTS IN THE ISO/TS 19700 CONTROLLED EQUIVALENCE RATIO TUBE FURNACE AND THE CONTROLLED ATMOSPHERE CONE CALORIMETER

June 24, 2013
Author(s)
Nathan D. Marsh, Richard G. Gann, John R. Shields, Marc R. Nyden
Efforts are underway in several research groups to adapt existing flammability test methods for the determination of yields of toxic compounds such as CO, HCN, and HCl. These include the NFPA 269 / ASTM E 1678 radiant furnace apparatus, the ISO/TS 19700

Quantifying Network Topology Robustness Under Budget Constraints

June 24, 2013
Author(s)
Assane Gueye, Aron Lazska
To design robust network topologies that resist strategic attacks, one must first be able to quantify robustness. In a recent line of research, the theory of network blocking games has been used to derive robustness metrics for topologies. A network

A New Metric for Latent Fingerprint Image Preprocessing

June 23, 2013
Author(s)
Mary Frances Theofanos, Andrew Dienstfrey, Brian Stanton, Haiying Guan
Although fingerprint recognition is a well-studied area, forensic fingerprint preprocessing based on computational theory is still a relatively new domain in need of further scientific study and development of standards of best practice. Latent fingerprint

Four Measures of Nonlinearity

June 23, 2013
Author(s)
Joan Boyar, Magnus Find, Rene Peralta
Cryptographic applications, such as hashing, block ciphers and stream ciphers, make use of functions which are simple by some criteria (such as circuit implementations), yet hard to invert almost everywhere. A necessary condition for the latter property is

Dexterous Manipulation for Manufacturing Applications Workshop

June 21, 2013
Author(s)
Joseph A. Falco, Jeremy A. Marvel, Elena R. Messina
The National Institute of Standards and Technology organized a free workshop in conjunction with the 2013 Automate and ProMat trade shows in Chicago, IL. The workshop addressed the application of dexterous robot technologies to meet the application needs

Enabling an Enterprise-wide, Data-centric Operating Environment

June 21, 2013
Author(s)
David F. Ferraiolo, Serban I. Gavrila, Wayne Jansen
Although access control (AC) currently plays an important role in securing DSs, if properly envisaged and designed, access control can serve a more vital role in computing than one might expect. The Policy Machine (PM), a framework for AC developed at NIST

Exposing Software Security and Availability Risks For Commercial Mobile Devices

June 21, 2013
Author(s)
Ryan Johnson, Zhaohui Wang, Angelos Stavrou, Jeff Voas
In this manuscript, we present our efforts towards a framework for exposing the functionality of a mobile application through a combination of static and dynamic program analysis that attempts to explore all available execution paths including libraries
Displaying 21301 - 21325 of 73929
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