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Displaying 28126 - 28150 of 73829

Combinatorial Software Testing

August 7, 2009
Author(s)
David R. Kuhn, Raghu N. Kacker, Yu Lei, Justin Hunter
Developers of large data-intensive software often notice an interesting - though not surprising - phenomenon: when usage of an application jumps dramatically, components that have operated for months without trouble suddenly develop previously undetected

Development of a Seebeck Coefficient Standard Reference Material

August 7, 2009
Author(s)
Nathan Lowhorn, Winnie Wong-Ng, John Lu, Evan L. Thomas, Makoto Otani, Martin L. Green, Neil Dilley, Jeffrey Sharp, Thanh N. Tran
We have successfully developed a Seebeck coefficient Standard Reference Material (SRM ), Bi2Te3, that is crucial for interlaboratory data comparison and for instrument calibration. Certification measurements were performed using two different techniques on

Measurements to Support Public Safety Communications: Attenuation and Variability of 750 MHz Radio Wave Signals in Four Large Building Structures: NIST Technical Note 1552

August 7, 2009
Author(s)
William F. Young, Kate Remley, John M. Ladbury, Christopher L. Holloway, Chriss A. Grosvenor, Galen H. Koepke, Sander Floris, Wouter Numan, Andrea Garuti
In this report, we investigate radio communication problems faced by emergency responders (firefighters, police, and emergency medical personnel) in disaster situations. A fundamental challenge to radio communications into and out of large buildings is the

Volatility of Aprotic Ionic Liquids - A Review

August 7, 2009
Author(s)
Jose M.S.S. Esperanca, Jose N. Canongia Lopes, Mohd Tariq, Luis M.N.B.F. Santos, Joe W. Magee, Luis P. Rebelo
A review of research on the volatility of aprotic ionic liquids is presented. This topic is limited to aprotic liquids, since measurements have led to a generalization that this class of substances possesses an extremely low vapor pressure. For research

Optimizing Authentication in Media Independent Handovers using IEEE 802.21

August 6, 2009
Author(s)
Antonio Izquierdo Manzanares, Nada T. Golmie, Richard A. Rouil
In this paper we study the performance of the authentication process in media independent handovers, and consider the impact of using IEEE 802.21 link triggers to achieve seamless mobility. We describe all interactions between the 802.21 services and the

Protein crystal engineering of YpAC-IV using a strategy of excess charge reduction

August 5, 2009
Author(s)
David T. Gallagher, N N. Smith, Sung Kim, Howard Robinson, Prasad T. Reddy
The class IV adenylyl cyclase from Yersinia pestis has been engineered to enable crystallization at neutral pH for mechanism studies. The wild-type enzyme crystallized only at pH below 5. Based on the unliganded wild-type structure 2FJT at 1.9 Angstrom

The Fifth Industrial Fluid Properties Simulation Challenge

August 5, 2009
Author(s)
F Case, Anne M. Chaka, J Moore, Raymond D. Mountain, J Olson, Richard B. Ross, Martin Schiller, Vincent K. Shen, Eric A. Stahlberg
The fifth industrial fluid properties simulation challenge was held in 2008. In it the contestants were challenged to predict specific, industrially relevant, properties of fluid systems, namely the 1-octanol /water partition coefficient and the infinite

Cell Interactions with Biomaterials Gradients and Arrays

August 4, 2009
Author(s)
Yanyin Yang, Vinoy Thomas, Abby W. Morgan, Shauna M. Dorsey, Carl Simon Jr.
Gradients and arrays have become very useful to the fields of tissue engineering and biomaterials.  Both gradients and arrays make efficient platforms for screening cell response to biomaterials.  Graded biomaterials also have functional applications and

Annual Report of the National Earthquake Hazards Reduction Program for Fiscal Year 2008

August 3, 2009
Author(s)
John(Jack) R. Hayes Jr., Edward Laatsch, Joy Pauschke, David Applegate, John Filson
This annual report of the National Earthquake Hazards Reduction Program (NEHRP) for fiscal year 2008 is submitted to Congress by the Interagency Coordinating Committee (ICC) of NEHRP, as required by the Earthquake Hazards Reduction Program Reauthorization

Developing an Uncertainty Analysis for Optical Scatterometry

August 3, 2009
Author(s)
Thomas A. Germer, Heather J. Patrick, Richard M. Silver, Benjamin Bunday
This article describes how an uncertainty analysis may be performed on a scatterometry measurement. A method is outlined for propagating uncertainties through a least-squares regression. The method includes the propagation of the measurement noise as well

Effects of Polymorphism on Charge Transport in Organic Semiconductors

August 3, 2009
Author(s)
Oana Jurchescu, M. Devin, Sankar Subramanian, Sean R. Parkin, Brandon Vogel, John E. Anthony, Thomas Jackson, David J. Gundlach
The increasing interest in fluorinated 5,11-bis(triethylsilylethynyl)anthradithiophene (diF TES ADT) is motivated by the demonstrated high performance field-effect transistors and circuits based on this material, complemented by reduced complexity

Impact of automation on precision

August 3, 2009
Author(s)
M A. Donmez, Johannes A. Soons
Automation has significant impacts on the economy and the development and use of technology. In this section, the impacts of automation on precision, which directly influences science, technology, and the economy, are discussed. As automation enables

Nanoscale Contacts Form the Bridge for Nano-Electrotechnical Businesses

August 3, 2009
Author(s)
Herbert S. Bennett
The purpose of this paper is to suggest a possible framework for nanoscale contacts that the stakeholders in nano-electrotechnologies may follow to establish international standards with the goal of accelerating innovation in nano-electrotechnologies

REFERENCE MATERIALS FOR RHEOMETERS AND THE FLOW TABLE

August 3, 2009
Author(s)
Chiara F. Ferraris, Zughuo Li, Mona Mohseni, Nicholas Franson
Oil is the most used standard material for the calibration of rheometers. Other products are used to calibrate flow devices, i.e., the flow table is calibrated using a mixture of oil and silica powder. The oil is a Newtonian liquid while the oil-silica
Displaying 28126 - 28150 of 73829
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