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NIST Authors in Bold

Displaying 24776 - 24800 of 73969

On the Security of Hash Functions Employing Blockcipher Postprocessing

July 14, 2011
Author(s)
Dong H. Chang, Mridul Nandi, Moti Yung
Analyzing desired generic properties of hash functions is an important current area in cryptography. For example, in Eurocrypt 2009, Dodis, Ristenpart and Shrimpton introduced the elegant notion of "Preimage Awareness" (PrA) of a hash function H^P , and

Comparison of Gas Velocity Measurements and CFD Predictions in the Exhaust Duct of a Stationary Source

July 13, 2011
Author(s)
Rodney A. Bryant, Olatunde B. Sanni, Elizabeth F. Moore, Robert P. Borthwick, Marco G. Fernandez, Iosif I. Shinder, Jiann C. Yang, Aaron N. Johnson
Two series of independent flow measurements were conducted for cross validation of flow velocity in the exhaust duct of the NIST Large Fire Laboratory. In the first series, two pressure measurement probe types, an S probe and a 3-D probe, were used to

Toxic effects and uptake of fullerenes spiked to sediments by Lumbriculus variegatus

July 13, 2011
Author(s)
Jussi Parkinen, Elijah Petersen, Matti Lepp?nen, Jarkko Akkanen
Effects of fullerene-spiked sediment on a benthic organism, Lumbriculus variegatus were investigated. Survival, growth, reproduction, and feeding rates were measured to assess in the extent to which fullerene-spiked natural sediment had acute or chronic

ACCELERATING STANDARDS AND MEASUREMENTS FOR THE SMART GRID

July 12, 2011
Author(s)
David A. Wollman
The National Institute of Standards and Technology (NIST) has efforts underway to accelerate the international development of interoperability standards to support the future modernized “Smart Grid” electric grid or energy delivery network characterized by

Dimensional Analysis of Through Silicon Vias Using the TSOM Method

July 12, 2011
Author(s)
Ravikiran Attota, Andrew Rudack
There is a great need for accurate, truly-3D metrology solutions that can be used for analysis of high aspect ratio features such as through-silicon-vias (TSVs). Through-focus scanning optical microscopy (TSOM) is an optical metrology method that provides

In Situ Gas Phase Measurements During Metal Alkylamide Atomic Layer Deposition

July 12, 2011
Author(s)
James E. Maslar, William A. Kimes, Brent A. Sperling
Metal alkylamide compounds, such as tetrakis(ethylmethylamido) hafnium (TEMAH), represent a technologically important class of metalorganic precursors for the deposition of metal oxides and metal nitrides via atomic layer deposition (ALD) or chemical vapor

Ferrocene as a Hydrophobic Templating Agent with Pyrogallol[4]arenes

July 11, 2011
Author(s)
Andrew V. Mossine, Harshita Kumari, Drew A. Fowler, Andrew K. Maerz, Steven R. Kline, Charles L. Barnes, Jerry L. Atwood
Cocrystallization of C-methylpyrogallol[4]arene (PgC1) and ferrocene in a methanolic solution led to the formation of two distinct crystalline products featuring two substantially different host-guest environs . The first of these features an exclusively

How to measure the size of tumors: The RECIST standard vs. volumetrics

July 11, 2011
Author(s)
Zachary H. Levine
Response Evaluation Criteria for Solid Tumours (RECIST) proposed 1D criteria for determining if 3D tumors are growing malignantly. Here, the error introduced is quantified using physical ellipsoids and fitting to clinical data on liver malignoma.

State Resolved THz Spectroscopy and Dynamics of Crystalline Peptide/Water Systems

July 11, 2011
Author(s)
Zeeshan Ahmed, Shin G. Chou, Karen M. Siegrist, David F. Plusquellic
State resolved THz studies of crystalline peptides and their hydrates have provided precise measures of the infrared active phonon modes that reflect motions on the longest possible length scales in these systems. The impact of co-crystallized water on the

USABILITY STANDARDS ACROSS THE DEVELOPMENT LIFECYCLE

July 11, 2011
Author(s)
Mary F. Theofanos, Brian C. Stanton
In 2005 the International Standards Organization published ISO/IEC 25062 “Common Industry Format (CIF) for Usability Test Reports”. This standard focused on documenting the results of usability testing in a consistent format in terms of user effectiveness

Rapid-Heating of Ionic Energetic Materials using a Micro-Differential Scanning Device

July 10, 2011
Author(s)
Nicholas W. Piekiel, Richard E. Cavicchi, Michael R. Zachariah
We employ a microcalorimeter device to study the thermal decomposition of organic energetic materials at very high heating rates. The compact size of this device enables rapid heating rates and sensitive detection of thermal loads from very small samples

Small fluctuations in epitaxial growth via conservative noise

July 7, 2011
Author(s)
Paul N. Patrone, Rongrong Wang, Dionisios Margetis
We study the combined effect of growth (material deposition from above) and nearest-neighbor entropic and force-dipole interactions in a stochastically perturbed system of N line defects (steps) on a vicinal crystal surface in 1+1 dimensions. First, we

Synchrotron radiation-based bilateral intercomparison of ultraviolet source calibrations

July 7, 2011
Author(s)
Uwe Arp, Zhigang Li, Ping-Shine Shaw, Mathias Richter, Roman Klein, Wolfgang Paustian, Reiner Thornagel
We report on a successful bilateral inter-comparison between the Physikalisch-Technische Bundesanstalt (PTB) and the National Institute of Standards and Technology (NIST). In both laboratories deuterium lamps were calibrated using the calculability of

Absolute transition frequencies and quantum interference in a frequency comb based measurement of the 6,7Li D lines

July 6, 2011
Author(s)
Craig J. Sansonetti, Clayton Simien, John D. Gillaspy, Joseph N. Tan, Samuel M. Brewer, Roger C. Brown, Saijun Wu, James V. Porto
Optical frequencies of the D lines of 6,7Li were measured with a relative accuracy of 5x10-11 using an optical comb synthesizer. Quantum interference in the laser induced fluorescence for the partially-resolved D2 lines was found to produce polarization

Characterization of Nanoparticle Release from Polymer Nanocomposites Due to Fire

July 6, 2011
Author(s)
Nasir M. Uddin, Marc R. Nyden, Rick D. Davis
Engineered nanoparticles, such as carbon nanotubes (CNTs) and nanofibers (CNFs) are increasingly being used as fire retardants and performance additives in polymeric materials. However, because of their small size and ability to interact with biological

Damping phenomena in Co 90 Fe 10 /Ni multilayers and alloys

July 6, 2011
Author(s)
Justin M. Shaw, Hans T. Nembach, Thomas J. Silva
We used perpendicular ferromagnetic resonance to measure the damping parameter in Co 90Fe 10/Ni multilayers over a wide range of layer thicknesses. The magnetic anisotropy within this range varied from in-pane to out-of-plane. We measured (Co 90Fe 10) xNi

Fate of nanoparticles during life cycle of polymer nanocomposites

July 6, 2011
Author(s)
Tinh Nguyen, Bastien T. Pellegrin, Coralie Bernard, Xiaohong Gu, Justin M. Gorham, Paul E. Stutzman, Deborah S. Jacobs, Walter E. Byrd, John W. Hettenhouser, Joannie W. Chin
Nanoparticles are increasingly used in consumer and structural polymeric products to enhance a variety of properties. Under the influences of environmental factors (e.g., ultraviolet, moisture, temperature) and mechanical actions (e.g., scratching

MBE Standardization and Validation

July 6, 2011
Author(s)
Joshua Lubell, Nathan W. Hartman, Doug Cheney
3D Model-Based Engineering (MBE) is an approach to product design, manufacturing, and support where a digital three-dimensional representation of the product serves as the normative source for information communicated throughout the product’s lifecycle and
Displaying 24776 - 24800 of 73969
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