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Displaying 5976 - 6000 of 73697

Approaches for Federal Agencies to Use the Cybersecurity Framework

August 17, 2021
Author(s)
Jeffrey Marron, Victoria Yan Pillitteri, Jon M. Boyens, Stephen Quinn, Gregory Witte
The document highlights examples for implementing the Framework for Improving Critical Infrastructure Cybersecurity (known as the Cybersecurity Framework) in a manner that complements the use of other NIST security and privacy risk management standards

Segmentation of Addictive Manufacturing Defects Using U-Net

August 17, 2021
Author(s)
Vivian Wong, Max Ferguson, Kincho Law, Yung-Tsun Lee, Paul Witherell
Additive manufacturing (AM) provides design flexibility and allows rapid fabrications of parts with complex geometries. The presence of internal defects, however, can lead to deficit performance of the fabricated part. X-ray Computed Tomography (XCT) is a

Use of Traveling Wave Signatures in Medium Voltage Distribution Systems for fault detection and location

August 17, 2021
Author(s)
DJ Anand, Avi Gopstein, Kumaraguru Prabakar, Lucas Monzon, Akanksha Singh, Matthew Reynolds, Yashwanth Nag Velaga, Jonathan Maack, Soumya Tiwari, Jina Roy, Colin Tombari, Ismael Mendoza Carrillo, Xinshuo Yang, Spatika Iyengar, William John
Protection systems are a critical feature for the proper operation of an electric grid. Protection systems should be able to quickly detect, identify, locate, and isolate the faults within a time frame that prevents damage to grid components and reduces

Crystal Structure, Sorption Property and Electronic Structure of the Flexible MOF, (Ni-4,4'azopyridine)[Ni(CN)4]

August 16, 2021
Author(s)
Winnie Wong-Ng, Gregory T. McCandless, Jeffrey T. Culp, Matthew Lawson, Yu-Sheng Chen, Daniel Siderius, Lan Li
The flexible metal organic framework (MOF) compound, Ni(L)[Ni(CN)4], (L = 4,4'azopyridine (C10N4H8), nicknamed AzoPyr) is a 3D porous material that adopts the Hofmann-type structure. This paper reports our synthesis of Ni-AzoPyr and its structural, bonding

Development of the Advanced Encryption Standard

August 16, 2021
Author(s)
Miles E. Smid, James Foti
Strong cryptographic algorithms are essential for the protection of stored and transmitted data throughout the world. This publication discusses the development of Federal Information Processing Standards Publication (FIPS) 197, which specifies a

Enhanced Magnetic Interaction by Face-Shared Hydride Anions in 6H-BaCrO 2 H

August 16, 2021
Author(s)
Kentaro Higashi, Masayuki Ochi, Yusuke Nambu, Takafumi Yamamoto, Taito Murakami, Naoya Yamashina, Cedric Tassel, Yuki Matsumoto, Hiroshi Takatsu, Craig Brown, Hiroshi Kageyama
Studies on magnetic oxyhydrides have been almost limited to perovskite-based lattices with corner-sharing octahedra with a M‒H‒M (M: transition metal) angle of θ 180 °. Using a high-pressure method, we prepared BaCrO 2H with a 6H-type hexagonal perovskite

Statistics of Visual Features in the Human Iris

August 16, 2021
Author(s)
George W. Quinn, James Matey, Patrick J. Grother, Edward Watters
In most current applications of iris recognition, matching is done by computer algorithms. The dominant algorithms are based on the work of John Daugman and are well understood because of the extensive analysis in the literature of iris2pi (the shorthand

Demonstration of an all-in-one solution for fire safe upholstery furniture: A benign backcoating for smoldering and flame-resistant cover fabrics

August 15, 2021
Author(s)
Ickchan Kim, Andre Thompson, Sung Chan Kim, Anthony Hamins, Matthew Bundy, Shonali Nazare, Rick D. Davis, Mauro Zammarano
The development of fire prevention and mitigation technologies with a benign toxicological and environmental profile has become of particular interest in the USA due to the recent adoption of state regulations that severely restrict the use of flame

Influence of solidification structure on austenite to martensite transformation in additively manufactured hot-work tool steels

August 15, 2021
Author(s)
Chia-Ying Chou, Niklas H. Pettersson, Durga A, Fan Zhang, Christos Oikonomou, Annika Borgenstam, Joakim Odqvist, Greta Lindwall
The microstructure of a hot-work tool steel additively manufactured using laser powder-bed fusion (L-PBF), and its response to post heat treatment, is studied in detail by microstructure characterization and computational thermodynamics and kinetics. The

Advances in Production Management Systems: Issues, Trends, and Vision Towards 2030

August 13, 2021
Author(s)
Boonserm Kulvatunyou, David Romero, Gregor V. Cieminski, Paolo Gaiardelli, Ilkyeong Moon, Giuditta Pezzotta, Stefan Wiesner, Marco Macchi, Jannicke B. Hauge, Irene Roda, Daryl Powell, Torbj?rn Netland, Nick Szirbik, Christoph Roser, Erlend Alfnes, Martin Rudberg
Since its inception in 1978, the IFIP Working Group 5.7 on Advances in Production Management Systems (APMS) has played an active role in the conception, development, and application of innovative strategies, frameworks, architectures, processes, methods

Near-Infrared Emitting Dual-Stimuli-Responsive Carbon Dots from Endogenous Bile Pigments

August 12, 2021
Author(s)
Parinaz Fathi, Parikshit Moitra, Madeleine M. McDonald, Mandy Esch, Dipanjan Pan
Careful selection of carbon dot precursors and surface modification techniques has allowed for the development of carbon dots with strong near-infrared fluorescence emission. However, the rational selection of tetrapyrrolic carbon dot precursors to obtain

NIST-NOAA Survey Tool for Business Disruption and Recovery Associated With Extreme Events: General Instrument Applied to the Beaumont and Port Arthur, Texas Small- and Medium-Sized Business and Nonprofit Organizations Community Post-Hurricane Harvey

August 12, 2021
Author(s)
Michelle Meyer, Joy Semien, Jennifer Helgeson
To gather more in-depth information about how disasters affect businesses and nonprofits, the National Institute of Standards and Technology (NIST) and the National Oceanic and Atmospheric Administration (NOAA) launched a study of business disruption and

Polarized X-ray scattering measures molecular orientation in polymer-grafted nanoparticles

August 12, 2021
Author(s)
Subhrangsu Mukherjee, Dean DeLongchamp, Eliot Gann, Daniel Sunday, Lee Richter, Jason Streit, Richard A. Vaia, Baskar Ganapathysubramanian, Kumar Saurabh, Adarsh Krishnamurthy
Polymer chains are attached to nanoparticle surfaces for many purposes, including altering solubility, influencing aggregation, dispersion, and even tailoring immune responses in drug delivery. The most unique structural motif of polymer-grafted

Quantitative Electron-Excited X-ray Microanalysis with Low Energy L-Peaks

August 12, 2021
Author(s)
Dale E. Newbury, Nicholas Ritchie
Quantitative electron-excited X-ray microanalysis that follows the standards-based intensity ratio method produces accurate results and an analytical total near unity based upon extensive testing on known materials. This paper investigates a significant

Relationship between Viscosity and Acyl Tail Dynamics in Lipid Bilayers

August 12, 2021
Author(s)
Michihiro Nagao, Elizabeth Kelley, Antonio Faraone, Makina Saito, Yoshitaka Yoda, Masayuki Kurokuzu, Shinichi Takata, Makoto Seto, Paul Butler
Membrane viscosity is a fundamental property that controls molecular transport and structural rearrangements in lipid membranes. Given its importance in many cell processes, various experimental and computational methods have been developed to measure the

'Passwords Keep Me Safe' - Understanding What Children Think about Passwords

August 11, 2021
Author(s)
Mary Theofanos, Yee-Yin Choong
Children use technology from a very young age, and often have to authenticate. The goal of this study is to explore children's practices, perceptions, and knowledge regarding passwords. Given the limited work to date and that the world's cyber posture and
Displaying 5976 - 6000 of 73697
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