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Search Publications

NIST Authors in Bold

Displaying 14726 - 14750 of 73697

Threat Modeling for Cloud Data Center Infrastructures

December 29, 2016
Author(s)
Nawaf Alhebaishi, Lingyu Wang, Sushil Jajodia, Anoop Singhal
Cloud computing has undergone rapid expansion throughout the last decade. Many companies and organizations have made the transition from traditional data centers to the cloud due to its flexibility and lower cost. However, traditional data centers are

Differentiating Left- and Right-Handed Carbon Nanotubes by DNA

December 28, 2016
Author(s)
Ming Zheng, Geyou Ao, Jason K. Streit, Jeffrey A. Fagan
The emergence of macromolecules of defined structures is a crucial step in the evolution of life. The mechanism by which these structures are selected from astronomical numbers of biopolymer sequences has long been a topic of controversy1,2. Experimenting

Performance of Metal and Polymeric O Ring Seals during Beyond-Design-Basis Thermal Conditions

December 28, 2016
Author(s)
Jiann C. Yang, Edward J. Hnetkovsky, Doris L. Rinehart, Marco G. Fernandez, Felix Gonzalez, Joseph Borowsky
This paper summarizes the small scale thermal exposure test results of the performance of metallic and polymeric O- ring seals typically used in radioactive material transportation packages. Five different O-ring materials were evaluated: Inconel/silver

Stoner vs. Heisenberg: Ultrafast exchange reduction and magnon generation during laser-induced demagnetization

December 28, 2016
Author(s)
Thomas J. Silva, Hans T. Nembach, Justin M. Shaw, Emrah Turgut, Dmitriy Zusin, Dominik Legut, Karel Carva, Ronny Knut, Cong Chen, Zhensheng Tao, Stefan Mathias, Martin Aeschlimann, Peter Oppeneer, Henry Kapteyn, Margaret Murnane, Patrik Grychtol
Understanding how the electronic band structure of a ferromagnetic material is modified during laser-induced demagnetization on femtosecond timescales has been a long-standing question in condensed matter physics. Here, we use ultrafast high harmonics to

Arithmetic Progressions on Conics

December 27, 2016
Author(s)
Abdoul Aziz Ciss, Dustin Moody
In this paper, we look at long arithmetic progressions on conics. By an arithmetic progression on a curve, we mean the existence of rational points on the curve whose x-coordinates are in arithmetic progression. We revisit arithmetic progressions on the

Spatially resolved ferroelectric domain-switching-controlled magnetism in Co 40 Fe 40 B 20 /Pb(Mg 1/3 Nb 2/3 ) 0.7 Ti 0.3 O 3 multiferroic heterostructure

December 27, 2016
Author(s)
Peisen Li, Yonggang Zhao, Sen Zhang, Aitian Chen, Dalai Li, Jing Ma, Yan Liu, Daniel T. Pierce, John Unguris, Hongguang Piao, Huiyun Zhang, Meihong Zhu, Xiaozhong Zhang, Xiufeng Han, Mengchun Pan, Ce-Wen Nan
Intrinsic spatial inhomogeneity or phase separation in cuprates and manganites etc., related to electronic and/or magnetic properties, has attracted much attention due to its significance in fundamental physics and applications. Here we use scanning Kerr

Adaptive Terahertz Dual Frequency Comb Spectrometer

December 26, 2016
Author(s)
Flavio Caldas da Cruz, Francisco S. Vieira, David F. Plusquellic, Scott A. Diddams
Terahertz dual frequency comb spectroscopy (THz-DFCS) yields high spectral resolution without compromising bandwidth. Nonetheless, the resolution of THz-DFCS is usually limited by the laser repetition rate, which is typically between 80 MHz and 1 GHz. In

An Overhanging Absorber for TES X-ray Focal Planes

December 23, 2016
Author(s)
James P. Hays-Wehle, Peter J. Lowell, Daniel R. Schmidt, Daniel S. Swetz, Joel N. Ullom
In order to improve pixel count and collecting area, future TES x-ray focal planes require pixels with both a higher coverage of the active area and compatibility with in-focal-plane multiplexing. We anticipate these improvements by developing a pixel with

Magnetization Reversal of Three-Dimensional Nickel Anti-Sphere Arrays

December 23, 2016
Author(s)
Le Yu, Zhongying Yan, Han-Chang Yang, Xuzhao Chai, Bingqing Li, Sina Moeendarbari, Yaowu Hao, Di Zhang, Gang Feng, Ping Han, Dustin A. Gilbert, Kai Liu, Kristen S. Buchanan, Xuemei Cheng
Three-dimensional anti-sphere arrays (3DAAs) of Ni have been fabricated using electrochemical deposition into self-assembled polystyrene sphere templates, which offers the advantage of straightforward scalability. Using the first-order reversal curve (FORC

Direct and Cascading Effects of Seismic Events on the Response of Water and Electrical Power Networks

December 22, 2016
Author(s)
Roberto Guidotti, Hana T. Chmielewski, Vipin Unnikrishnan, Gardoni Paolo, Therese P. McAllister, John W. van de Lindt
Water and electrical power networks are critical infrastructure in our communities; their disruption, e.g., due to the occurrence of hazard events, greatly affects communities' well-being, the economic and social response of the entire region and recovery

Guide for Cybersecurity Event Recovery

December 22, 2016
Author(s)
Michael Bartock, Jeffrey Cichonski, Murugiah Souppaya, Matthew C. Smith, Gregory Witte, Karen Scarfone
In light of an increasing number of cybersecurity events, organizations can improve resilience by ensuring that their risk management processes include comprehensive recovery planning. Identifying and prioritizing organization resources helps to guide

Semisynthetic zigzag optical lattice for ultracold bosons

December 22, 2016
Author(s)
Ian B. Spielman, Gediminas Juzeli?nas, Christoph Str?ter, Andr? Eckardt, Mantas Ra?i?nas, Egidijus Anisimovas
We consider a one-dimensional "zigzag" lattice, pictured as a two-site wide single strip taken from a triangular lattice, affected by a tunable homogeneous magnetic flux piercing its triangular plaquettes. We focus on a semi-synthetic lattice produced by

SHA-3 Derived Functions: cSHAKE, KMAC, TupleHash and ParallelHash

December 22, 2016
Author(s)
John M. Kelsey, Shu-jen H. Chang, Ray Perlner
This Recommendation specifies four types of SHA-3-derived functions: cSHAKE, KMAC, TupleHash, and ParallelHash, each defined for a 128- and 256-bit security strength. cSHAKE is a customizable variant of the SHAKE function, as defined in FIPS 202. KMAC (for

Summary of NIST/SIM Chemical Metrology Working Group Training Opportunity: Isotope Dilution-Mass Spectrometry Clinical Measurement Course

December 22, 2016
Author(s)
Jeanita Pritchett, Katrice A. Lippa, Mary Bedner, Carolyn Q. Burdette, Johanna Camara, Brian E. Lang, Michael A. Nelson, Lane C. Sander, Lorna T. Sniegoski
The one week NIST-SIM chemical metrology training opportunity was designed to provide SIM NMI/DI laboratory personnel with in-depth classroom and hands-on laboratory experience for the implementation of isotope dilution/mass spectrometry (ID/MS) methods in

Understanding Ionic Conductivity Trends in Polyborane Solid Electrolytes from Ab Initio Molecular Dynamics

December 22, 2016
Author(s)
Joel B. Varley, Kyoung Kweon, Prateek Mehta, Patrick Shea, Tae Wook Heo, Terrence J. Udovic, Vitalie Stavila, Brandon C. Wood
Polyborane salts based on B 12H 2- 12, B 10H 2- 10, and their carboborane counterparts CB 11H - 12 - 12 and CB 9H^u- 10 demonstrate extraordinary Li and Na superionic conductivity that have made them attractive as electrolytes in all-solid-state batteries

Using RTS/CTS to Enhance the Performance of IEEE 802.15.6 CSMA/CA

December 22, 2016
Author(s)
Kamran Sayrafian, Martina Barbi, Mehdi Alasti
IEEE 802.15.6 is a radio interface standard for a wireless connectivity of wearable and implantable sensors and actuators located inside or in close proximity to the human body i.e. Body Area Network (BAN). Medical applications requirements impose

A Perspective on Nonvolatile Magnetic Memory Technology

December 21, 2016
Author(s)
Ronald B. Goldfarb
Magnetic random-access memory (MRAM) is characterized by nonvolatility, low energy dissipation, high endurance (repeated writing), scalability to smaller dimensions, compatibility with complementary metal-oxide semiconductor (CMOS) processing, resistance

Application Creation for an Immersive Virtual Measurement and Analysis Laboratory

December 21, 2016
Author(s)
Wesley N. Griffin, William L. George, Terence J. Griffin, John G. Hagedorn, Thomas M. Olano, Steven G. Satterfield, James S. Sims, Judith E. Terrill
Content creation for realtime interactive systems is a difficult problem. In game development, content creation pipelines are a major portion of the code base and content creation is a major portion of the budget. In research environments, the choice of

Generalized entropy theory of glass-formation in fully flexible polymer melts

December 21, 2016
Author(s)
Jack F. Douglas, Wensheng Xu, Karl Freed
The generalized entropy theory (GET) offers many insights into how molecular parameters influence polymer glass-formation. Given the fact that chain rigidity often plays a critical role in understanding the glass- formation of polymer materials, the GET
Displaying 14726 - 14750 of 73697
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