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Search Publications

NIST Authors in Bold

Displaying 24501 - 24525 of 73697

Timing in Telecommunications Networks

July 20, 2011
Author(s)
Judah Levine
I describe the statistical considerations used to design systems whose clocks are compared using dial-up telephone lines or the Internet to exchange timing informaiton. The comparison is usually used to synchronize the time of a client system to the time

Advanced Image Composition with Intra-Frame Drift Correction

July 19, 2011
Author(s)
Petr Cizmar, Andras Vladar, Michael T. Postek
Drift Corrected Image Composition (DCIC) is a real-time technique that allows for acquiring significantly more accurate images compare to traditional slow or fast imaging methods.[Ref.] It is especially useful in nanometer-scale imaging and metrology

Characterization of the non-uniform reaction in chemically-amplified calix[4]resorcinarene molecular resist thin films

July 19, 2011
Author(s)
Vivek M. Prabhu, Shuhui Kang, Regis J. Kline, Dean M. DeLongchamp, Daniel A. Fischer, Wen-Li Wu, Sushil K. Satija, Jing Sha, Christopher K. Ober, Peter V. Bonnesen
The ccc stereoisomer-purified tert-butoxycarbonyloxy (t-Boc) protected calix[4]resorcinarene molecular resists blended with photoacid generator exhibit a non-uniform photoacid catalyzed reaction in thin films. The surface displays a reduced reaction extent

Decision Support for Sustainable Manufacturing using Decision Guidance Query Language

July 19, 2011
Author(s)
Guodong Shao, Deogratias Kibira, Alexander Brodsky , Nathan Egge
Sustainability has become a very significant research topic as it impacts many different manufacturing industries. Therefore, the technologies for monitoring, analyzing, evaluating, and optimizing the sustainability performance indicators for manufacturing

Normal modes of trapped ions in the presence of anharmonic trap potentials

July 19, 2011
Author(s)
Jonathan Home, David Hanneke, John D. Jost, Dietrich Leibfried, David J. Wineland
We theoretically and experimentally examine the effects of anharmonic terms in the trapping potential for linear chains of trapped ions. We concentrate on two different effects, which become significant at different levels of anharmonicity. The first is a

Predicting Macroscopic Dynamics in Large Distributed Systems

July 18, 2011
Author(s)
Kevin L. Mills, James J. Filliben
In this paper, we outline an approach that can be used to predict macroscopic dynamics when new components are deployed in a large distributed system. Our approach combines two main methods: scale reduction and multidimensional data analysis techniques

The Effect of Folding on the Mechanical Properties and Internal Structures of Fibers Used in Ballistic Applications

July 18, 2011
Author(s)
Haruki Kobayashi, Walter G. McDonough, Hae-Jeong Lee, Jae H. Kim, Amanda L. Forster, Kirk D. Rice, Gale A. Holmes
The failure of a first responder's soft body armor (SBA) composed of poly (p-phenylene benzobisoxazole) (PBO) fibers has prompted researchers to assess the long-term durability and effectiveness of current and future SBA products. Based on existing data

The Proper Use of Substitute Test Fluids

July 18, 2011
Author(s)
Marc A. Buttler
Liquid-measuring devices are used in many different commercial applications. The vast array of liquid products that are measured includes some products that may pose difficulties in testing. NIST Handbook 44 allows for substitution of fluids during testing

Incorporation of Defects into the Central Atoms Model of a Metallic Glass

July 17, 2011
Author(s)
Eric Lass, Aiwu Zhu, Gary J. Shiflet, S J. Poon
The central atoms model (CAM) of a metallic glass is extended to incorporate thermodynamically stable defects, similar to vacancies in a crystalline solid, within the amorphous structure. A bond deficiency (BD), which is the proposed defect present in all

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
Displaying 24501 - 24525 of 73697
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