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Displaying 13476 - 13500 of 73697

Digital Identity Guidelines

June 22, 2017
Author(s)
Paul A. Grassi, Michael E. Garcia, James L. Fenton
These guidelines provide technical requirements for federal agencies implementing digital identity services and are not intended to constrain the development or use of standards outside of this purpose. The guidelines cover identity proofing and

Digital Identity Guidelines: Authentication and Lifecycle Management

June 22, 2017
Author(s)
Paul A. Grassi, Elaine M. Newton, Ray A. Perlner, Andrew R. Regenscheid, William E. Burr, Justin P. Richer, Naomi B. Lefkovitz, Jamie M. Danker, Yee-Yin Choong, Kristen Greene, Mary F. Theofanos
These guidelines provide technical requirements for federal agencies implementing digital identity services and are not intended to constrain the development or use of standards outside of this purpose. These guidelines focus on the authentication of

Digital Identity Guidelines: Enrollment and Identity Proofing Requirements

June 22, 2017
Author(s)
Paul A. Grassi, James L. Fenton, Naomi B. Lefkovitz, Jamie M. Danker, Yee-Yin Choong, Kristen Greene, Mary F. Theofanos
These guidelines provide technical requirements for federal agencies implementing digital identity services and are not intended to constrain the development or use of standards outside of this purpose. This guideline focuses on the enrollment and

Digital Identity Guidelines: Federation and Assertions

June 22, 2017
Author(s)
Paul A. Grassi, Ellen M. Nadeau, Justin P. Richer, Sarah K. Squire, James L. Fenton, Naomi Lefkovitz, Jamie M. Danker, Yee-Yin Choong, Kristen K. Greene
This document and its companion documents, SP 800-63, SP 800-63A, and SP 800-63B, provide technical and procedural guidelines to agencies for the implementation of federated identity systems and for assertions used by federations. This publication

In Vitro Cytochrome P450 46A1 (CYP46A1) Activation by Neuroactive Compounds

June 22, 2017
Author(s)
Natalia Mast, Kyle Anderson, Kevin Johnson, Thanh Phan, F. Peter Guengerich, Irina A. Pikuleva
Cytochrome P450 46A1 (CYP46A1 or cholesterol 24-hydroxylase) is the central nervous system-specific enzyme responsible for the majority of cholesterol elimination from the brain. Previously we found that CYP46A1 could be activated pharmacologically in mice

Towards Actionable Mission Impact Assessment in the Context of Cloud Computing

June 22, 2017
Author(s)
Xiaoyan Sun, Anoop Singhal, Peng Liu
Today's cyber-attacks towards enterprise networks often undermine and even fail the mission assurance of victim networks. Mission cyber resilience (or active cyber defense) is critical to prevent or minimize negative consequences towards missions. Without

A Near Optimal Algorithm to Count Occurrences of Subsequences of a Given Length

June 21, 2017
Author(s)
Jose Torres-Jimenez, Idelfonso Izquierdo-Marquez, Daniel Ramirez-Acuna, Rene Peralta
For a positive integer k let S = 0, 1, . . . , k − 1} be the alphabet whose symbols are the integers from 0 to k − 1. The set off all strings of length n ∈ Z+ over S is denoted by S(n). We show a near optimal algorithm to solve the problem of counting the

Approaches for Characterizing Nonlinear Mixtures in Hyperspectral Imagery

June 21, 2017
Author(s)
Robert S. Rand, Ronald G. Resmini, David W. Allen
This study considers a physics-based and a kernel-based approach for characterizing pixels in a scene that may be linear (areal mixed) or nonlinear (intimately mixed). The physics-based method is based on earlier studies that indicate nonlinear mixtures in

Occurrence of Antibiotic Residues in Differentially Treated Wastewater and in Reclaimed Water Utilized in Spray Irrigation

June 21, 2017
Author(s)
Prachi Kulkarni, Nathanael David Olson, Greg Raspanti, Rachel F. Rosenberg Goldstein, Shawn G. Gibbs, Amir Sapkota, Amy Sapkota
The objective of this study was to evaluate concentrations of antibiotics in differentially treated wastewater and reclaimed water. Wastewater (from several treatment processes), final effluent and reclaimed water samples (n=72) from four U.S. wastewater

Toward Standardizing Lightweight Cryptography

June 21, 2017
Author(s)
Kerry A. McKay, Larry Feldman, Gregory A. Witte
This bulletin summarizes the information in NISTIR 8114: Report on Lightweight Cryptography which provides an overview of the lightweight cryptography project at NIST and describes plans for the standardization of lightweight cryptography algorithms.

Spin-Analyzed SANS for Soft Matter Applications

June 20, 2017
Author(s)
WangChun Chen, John Barker, Ronald L. Jones, Kathryn Krycka, Shannon Watson, Cedric Victor Lucien Gagnon, T. Perevozchivoka, Paul Butler, Thomas R. Gentile
The small angle neutron scattering (SANS) of nearly Q-independent nuclear spin-incoherent scattering from hydrogen present in most soft matter and biology samples may raise an issue in structure determination in certain soft matter applications. This is

Tip Enhanced Raman Scattering of Graphene

June 20, 2017
Author(s)
Ryan Beams
This article reviews the mechanism of tip enhanced Raman spectroscopy (TERS) and its importance for characterizing graphene. The theoretical foundation of TERS and experimental implementation are discussed. Conventionally, Raman scattering is treated as a

A Testbed to Verify Timing Behavior of Cyber-Physical Systems

June 18, 2017
Author(s)
Aviral Shrivastava, Mohammad Khayatian, Mohammadreza Mehrabian, Hugo A. Andrade, Patricia Derler, Ya-Shian Li-Baboud, Edward Griffor, Marc A. Weiss, John Eidson, Kevin Stanton
Time is a foundational aspect of Cyber-Physical Systems (CPS). Correct time and timing of system events is critical to optimized responsiveness to the environment, in terms of timeliness, accuracy and precision in the knowledge, measurement, prediction

Event Nugget and Event Coreference Annotation

June 17, 2017
Author(s)
Zhiyi Song, Ann Bies, Stephanie Strassel, Teruko Mitamura, Hoa T. Dang, Joe Ellis, Sue Holm, Yakari Yamakawa
In this paper, we describe the event nugget annotation created in support of the pilot Event Nugget Detection evaluation in 2014 and in support of the Event Nugget Detection and TAC KBP open evaluation in 2015. We present the data volume for both training

Simultaneous Neutron and X-Ray Imaging of 3D Kerogen and Fracture Structure in Shales

June 17, 2017
Author(s)
Wei-Shan NMN Chiang, Jacob M LaManna, Daniel S. Hussey, David L. Jacobson, Yun Liu, Jilin Zhang, Daniel T. Georgi, Jin-hong Chen
Hydrocarbon production from shales using horizontal drilling and hydraulic fracturing has been the key development in US energy industry in the past decade and has now become more important globally. Nevertheless, many fundamental problems related to the

A Backscatter-Suppressed Beta Spectrometer

June 16, 2017
Author(s)
Maynard S. Dewey, Taufique Hassan, Fred B. Bateman, Brian Collett, Guillaume Darius, Christina DeAngelis, Gordon L. Jones, Alexander Komives, Alexander Laptev, Michael Mendenhall, Jeffrey S. Nico, George Noid, Ed Stephenson, Fred Wietfeldt, Isaac Stern, Bob Trull
Backscatter of electrons from a beta spectrometer, with incomplete energy deposition, can lead to undesirable effects in many types of experiments. We present and discuss the design and operation of a backscatter-suppressed beta spectrometer that was

A pulsed scalar optically-pumped magnetometer

June 16, 2017
Author(s)
Vladislav P. Gerginov, Sean P. Krzyzewski, Svenja A. Knappe
A scalar magnetic field sensor based on 87Rb vapor millimeter-size cell is described. The magnetometer uses co-propagating pump/probe laser beam, amplitude modulation of the pump beam and non-demolition polarization rotation detection of the probe beam

High-Field Magnetization and Magnetic Phase Diagram of a-Cu 2 V 2 O 7

June 16, 2017
Author(s)
G. Gitgeatpong, M. Suewattana, Shiwei Zhang, A. Miyake, M. Tokunaga, P. Chanlert, N. Kurita, H. Tanaka, T. J. Sato, Yang Zhao, K. Matan
High-field magnetization of the spin-1/2 antiferromagnet α-Cu 2V 2O 7 was measured in pulsed magnetic fields of up to 56 T in order to study its magnetic phase diagram. When the field was applied along the easy axis (the a-axis), two distinct transitions
Displaying 13476 - 13500 of 73697
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