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Displaying 10326 - 10350 of 73755

Portable Verification Artifact for Millimeter-Wave-Frequency Channel Sounders

March 1, 2019
Author(s)
Jos N. Dortmans, Jeanne Quimby, Kate Remley, Dylan Williams, Jelena Senic, Roy Sun, Peter B. Papazian
We develop a portable artifact for the conducted verification of millimeter-wave-frequency channel sounders. The artifact is first characterized with a vector network analyzer, providing a high-dynamic range, traceable measurement and complete uncertainty

Raman Imaging of Surface and Sub-Surface Graphene Oxide in Fiber Reinforced Polymer Nanocomposites

March 1, 2019
Author(s)
Amber D. McCreary, Qi An, Aaron M. Forster, Kunwei Liu, Siyao He, Chris Macosko, Andreas Stein, Angela R. Hight Walker
The incorporation of nanofillers, such as graphene oxide (GO) into fiber reinforced polymer composites to improve their mechanical properties is a significant research area for a variety of industrial applications. However, to date there is no reliable

Targeting hMSC Response via Surface Carbonyl Groups, Contact Angle, and Protein Interactions

March 1, 2019
Author(s)
Max J. Lerman, Shinichiro Muramoto, Navein Arumugasaamy, Michael Van Order, Josephine Lembong, Anushka Gerald, John G. Gillen, John P. Fisher
Traditional 2D culture systems made of polystyrene (PS) require the addition of surface chemistry beyond the nominal phenyl groups present to facilitate and encourage cell adhesion. Determining the surface properties which enhance protein adhesion from

Threshold Schemes for Cryptographic Primitives

March 1, 2019
Author(s)
Luis T. A. N. Brandao, Nicky W. Mouha, Apostol T. Vassilev
The Computer Security Division at the National Institute of Standards and Technology is interested in promoting the security of implementations of cryptographic primitives. This security depends not only on the theoretical properties of the primitives but

A data science challenge for converting airborne remote sensing data into ecological information

February 28, 2019
Author(s)
Sergio Marconi, Sarah J. Graves, Dihong Gong, Shahriari Nia Morteza, Marion Le Bras, Bonnie J. Dorr, Peter Fontana, Justin Gearhart, Craig Greenberg, Dave J. Harris, Sugumar A. Kumar, Agarwal Nishant, Joshi Prarabdh, Sandeep U. Rege, Stephanie A. Bohlman, Ethan P. White, Daisy Z. Wang
In recent years ecology has reached the point where a data science competition could be very productive. Large amounts of open data are increasingly available and areas of shared interest around which to center competitions are increasingly prominent. The

Inter-comparison of Atmospheric Trace Gas Dispersion Models: Barnett Shale Case Study

February 28, 2019
Author(s)
Anna Karion, Thomas Lauvaux, Israel Lopez Coto, Colm Sweeney, Kimberly L. Mueller, Sharon M. Gourdji, Wayne Angevine, Zachary R. Barkley, Aijun Deng, Ariel Stein, James R. Whetstone
Greenhouse gas emissions mitigation requires understanding dominant processes controlling fluxes of these trace gases into the atmosphere at increasingly finer spatial and temporal scales. Trace gas fluxes can be estimated using a variety of approaches

Neutron Instruments for Research in Coordination Chemistry

February 28, 2019
Author(s)
Zi-Ling Xue, Anibal J. Ramirez-Cuesta, Craig Brown, Stuart Calder, Huibo Cao, Bryan C. Chakoumakos, Luke L. Daemen, Ashfia Huq, Alexander I. Kolesnikov, Eugene Mamontov, Andrey A Podlesnyak, Xiaoping Wang
Neutron diffraction and spectroscopies offer unique insight into structures and properties of solids and molecular materials. All neutron instruments located at the various neutron sources are distinct, even if their designs are based on similar principles

Measurement of the impact of turbulence anisoplanatism on precision free-space optical time transfer

February 27, 2019
Author(s)
William C. Swann, Martha I. Bodine, Isaac H. Khader, Jean-Daniel Deschenes, Esther Baumann, Laura C. Sinclair, Nathan R. Newbury
Future highly precise free-space optical clock networks will require optically-based two-way time and frequency transfer links. As these networks extend over longer distances, they will include links between moving platforms, e.g. ground-to-air or ground

Open Speech Analytic Technologies Pilot Evaluation OpenSAT Pilot

February 27, 2019
Author(s)
Frederick R. Byers, Jonathan G. Fiscus, Seyed Omid Sadjadi, Gregory A. Sanders, Mark A. Przybocki
Open Speech Analytic Technologies Pilot Evaluation (OpenSAT) is a new speech analytic technology evaluation series organized by NIST that will begin with a pilot evaluation in the Spring of 2017. The pilot includes three tasks: Speech Activity Detection

Probing Magnetic Excitations in Co^II^ Single-Molecule Magnets by Inelastic Neutron Scattering

February 27, 2019
Author(s)
Shelby E. Stavretis, Yongqiang Cheng, Luke L. Daemen, Craig Brown, Duncan H. Moseley, Eckhard Bill, Mihail Atanasov, A. J. Ramirez-Cuesta, Frank Neese, Zi-Ling Xue
Co(acac) 2(H 2O) 2 (1 acac = acetylacetonate), a transition metal complex (S = 3/2), displays field-induced slow magnetic relaxation as a single-molecule magnet (SMMs). For 1 and its isotopologues Co(acac) 2(D 2O) 2 (1-d 4^) and Co(acac-d 7) 2(D 2O) 2 (1-D

A-UGV Capabilities - Recommended Guide to Autonomy Levels

February 26, 2019
Author(s)
Roger V. Bostelman, Elena R. Messina
A-UGV has been defined by ASTM Committee F45 as an "Automatic, Automated, or Autonomous vehicle that operates while in contact with the ground without a human operator." However, what do the levels actually mean to manufacturers, users, or especially
Displaying 10326 - 10350 of 73755
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