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NIST Authors in Bold

Displaying 10626 - 10650 of 13225

Status Report on the Second Round of the SHA-3 Cryptographic Hash Algorithm Competition

February 23, 2011
Author(s)
Meltem Sonmez Turan, Ray A. Perlner, Lawrence E. Bassham, William E. Burr, Dong H. Chang, Shu-jen H. Chang, Morris J. Dworkin, John M. Kelsey, Souradyuti Paul, Rene C. Peralta
… The National Institute of Standards and Technology (NIST) opened a public competition on November 2, … which will augment the hash algorithms currently specified in the Federal Information Processing Standard (FIPS) 180-3, … Standard. The competition was NIST's response to advances in the cryptanalysis of hash algorithms. NIST received …

Workshop on Bridging Satellite Climate Data Gaps

February 16, 2011
Author(s)
Catherine C. Cooksey, Raju V. Datla
… highly accurate and consistent measurements. Data gaps in the time series (such as possible launch delay or failure) or inconsistencies in radiometric scales between satellites undermine the … came together at the National Institute of Standards and Technology on December 10, 2009 for a workshop to prioritize …

A review of fatigue crack growth for pipeline steels exposed to hydrogen

November 30, 2010
Author(s)
Nicholas Nanninga, Andrew J. Slifka, Yaakov Levy, Calvin L. White
… an economical means of storing and transporting energy in the form of hydrogen gas. Pipelines can be used to … and wind farms to and from salt cavern storage locations. In addition, pipeline transportation systems will be essential before widespread hydrogen fuel cell vehicle technology becomes a reality. Since hydrogen pipeline use is …

NIST F1 and F2

November 15, 2010
Author(s)
Thomas P. Heavner, Thomas E. Parker, Jon H. Shirley, Paul D. Kunz, Steven R. Jefferts
… The National Institute of Standards and Technology operates a cesium fountain primary frequency … currently δf/f o ≅ 3 × 10 -16 , dominated by uncertainty in the Blackbody radiation inducedfrequency shift. In order to circumvent the uncertainty associated with the …

Intrinsic defects in perpendicularly magnetized multilayer thin films and nanostructures

October 26, 2010
Author(s)
Justin M. Shaw, Miles Olsen, June W. Lau, Michael L. Schneider, Thomas J. Silva, Olav Hellwig, Elizabeth Dobisz, Bruce D. Terris
… Intrinsic magnetic defects in perpendicularly magnetized nanostructures reduce the … of device and developing recording technologies. In addition to a distribution of local anisotropy fields, we show that such defects also exhibit variations in local anisotropy axes. The magnetic defects are identified …

Security Content Automation Protocol (SCAP): Helping Organizations Maintain and Verify the Security of their Information Systems

September 27, 2010
Author(s)
Shirley M. Radack
… This bulletin summarizes the information presented in NIST Special Publication (SP) 800-117, Guide To Adopting … Recommendations of the National Institute of Standards and Technology. The publication, which was written by Stephen … and to communicate information regarding vulnerabilities in a standardized manner. The bulletin provides information …

NIST COORDINATION OF SMART GRID INTEROPERABILITY STANDARDS

August 9, 2010
Author(s)
David A. Wollman, Gerald FitzPatrick, Paul A. Boynton, Thomas L. Nelson
… The National Institute of Standards and Technology has efforts underway to accelerate the development … capable of monitoring and responding to changes in everything from power plants to customer preferences to … coordinating and accelerating the development of standards in private-sector standards setting organizations, including …

REFLECTIVITY STUDIES OF PASSIVE MICROWAVE CALIBRATION TARGETS AND ABSORPTIVE MATERIALS

July 30, 2010
Author(s)
Dazhen Gu, Amanda Cox, Derek A. Houtz, Dave K. Walker, James P. Randa, Robert L. Billinger
… remote sensing at National Institute of Standards and Technology (NIST).Three blackbody targets at variable … along with a metal plate made of aluminum were measured in terms of their reflection coefficients by horn antennas in connection with a vector network analyzer (VNA) in the …

Low-Frequency Characterization of MEMS-Based Portable Atomic Magnetometer

June 2, 2010
Author(s)
Rahul R. Mhaskar, Svenja A. Knappe, John E. Kitching
… based on absorption or polarization rotation of light in an alkali vapor have recently demonstrated sensitivities … cells fabricated with micro electro mechanical (MEMS) technology has been the focus of development for the better part of the last decade. In this paper, we describe a portable magnetometery system …

Certification of NIST Standard Reference Material 640d

June 1, 2010
Author(s)
David R. Black, Donald A. Windover, Albert Henins, David L. Gil, James J. Filliben, James P. Cline
… The National Institute of Standards and Technology (NIST) certify a variety of standard reference … powder specially prepared to produce strain-free particles in a size range between 1 m and 10 m to eliminate size …

Standard Reference Material 640d for X-ray Metrology

June 1, 2010
Author(s)
David R. Black, Donald A. Windover, Albert Henins, David L. Gil, James J. Filliben, James P. Cline
… The National Institute of Standards and Technology (NIST) certify a variety of standard reference … specifically prepared to produce strain-free particles in the size range between 1 m and 10 m to eliminate size … Advances in x-ray analysis, proceedings of 58th DXC …

Code-division SQUID multiplexing

April 23, 2010
Author(s)
Michael D. Niemack, Kent D. Irwin, Joern Beyer, Hsiao-Mei Cho, William B. Doriese, Gene C. Hilton, Carl D. Reintsema, Daniel R. Schmidt, Joel N. Ullom, Leila R. Vale
… interference device (SQUID) readout systems are a critical technology for measuring large arrays of superconducting … successful SQUID multiplexing architectures are modulated in time and frequency. We present a SQUID multiplexing … degraded by SQUID noise aliasing, suppresses noise pickup in the readout circuit and has low-levels of crosstalk …

ZigBee-Wireless Mesh Networks for Building Automation and Control

April 12, 2010
Author(s)
Wenqi Guo, William M. Healy, Mengchu Zhou
… ZigBee is a wireless technology developed as an open global standard to address … IEEE 802.15.4 physical radio specification and operates in unlicensed bands worldwide at different frequencies. … the possibilities and advantages of applying ZigBee-WMNs in BACs to benefit building occupants. …

Low-loss superconducting resonant circuits using vacuum-gap -based microwave components

March 4, 2010
Author(s)
Katarina Cicak, Dale Li, Joshua Strong, Michael S. Allman, Fabio Altomare, Adam J. Sirois, Jed D. Whittaker, Raymond W. Simmonds
… microwave circuits through developing a vacuum-gap technology for fabricating lumped-element capacitive and … to eliminate amorphous dielectric materials leaving vacuum in regions of strong electric and magnetic fields. Vacuum-gap … capacitors from 0.1 pF to 100 pF are relatively small in size and show ideal behavior. Vacuum-bridge crossovers are …

Rethinking Egress: A Vision for the Future

November 30, 2009
Author(s)
Jason D. Averill, Richard D. Peacock
… and research are redefining the state-of-the-art in building evacuation. The time is right to rethink the entire infrastructure of egress from buildings in light new opportunities to address the economic and … from a variety of disciplinary background assembled in Warrenton, VA from April 1-3, 2008 in order to consider …

Mobile Microrobot Characterization through Performance-Based Competitions

November 19, 2009
Author(s)
Jason J. Gorman, Craig D. McGray, Richard A. Allen
… Recent advances in the design and fabrication of microelectromechanical … microrobots that can autonomously navigate and manipulate in controlled environments. It is expected that this technology will be critical in applications as varied as …

Traceable waveform calibration with a covariance-based uncertainty analysis

October 1, 2009
Author(s)
Paul D. Hale, Dylan F. Williams, Andrew M. Dienstfrey, Arkadiusz C. Lewandowski, Tracy S. Clement, Darryl A. Keenan
… pulse generator produces at a load at every time point in themeasured waveform. The calibration includes an … sampling system at the National Institute of Standards and Technology. The calibration includes a covariance-based … analysis that provides the uncertainty at each time in the waveform vector and the correlations between the …

Electrochemical Micromachining of Hastelloy B-2 with Ultrashort Voltage Pulses

September 8, 2009
Author(s)
Gordon A. Shaw, Joseph J. Maurer, Steven E. Fick, Thomas P. Moffat, J. J. Mallett, John L. Hudson
Electrochemical micromachining (ECMM) with ultrashort voltage pulses, a maskless all-electrochemical micro and nanofabrication technique, has been used to fabricate microstructures on a corrosion resistant nickel-based superalloy, Hastelloy B-2. Because of

Assessing Face Overlay

August 17, 2009
Author(s)
Mary F. Theofanos, Brian C. Stanton, Charles L. Sheppard, Ross J. Micheals, Yee-Yin Choong, John W. Wydler II, Kevin C. Mangold, Michelle P. Steves, Emile L. Morse
… The United States Visitor and Immigrant Status Indicator Technology's (US-VISIT) has embarked on an effort to improve … center and align the face image. Use of the overlay in this study showed that it could be used to frame a face …
Displaying 10626 - 10650 of 13225
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