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Displaying 42751 - 42775 of 73829

Knowledge Engineering for Real Time Intelligent Control

September 18, 2002
Author(s)
John Evans, Elena R. Messina, James S. Albus
The key to real-time intelligent control lies in the knowledge models that the system contains. Three main classes of knowledge are identified: parametric, geometric/iconic, and symbolic. Each of these classes provides unique perspectives and advantages

Viscoelastic Characterization of Sealant Materials

September 18, 2002
Author(s)
Donald L. Hunston, Christopher C. White
Polymeric sealants are an important example of a major consumer product where the performance depends critically on rheological properties. The work here developed a testing and modeling procedure to characterize the basic mechanical properties of sealant

The 2001 Material Research Society (MRS) Fall Meeting Report

September 17, 2002
Author(s)
Winnie K. Wong-Ng
The 2001 Materials Research Society (MRS) annual meeting took place in Boston Copely Plaza (in the spacious Hynes Convention Center) from November 25-30. The four meeting co-chairs: B.M. Clemens, J.A. Floro, J.A. Kornfield, and Y. Suzuki have organized a

Effects of Word Error Rate in the DARPA Communicator Data During 2000 and 2001

September 16, 2002
Author(s)
Gregory A. Sanders, A N. Le, John S. Garofolo
During 2000 and 2001 two large data collections were performed, with paid users doing travel planning using eight Communicator spoken dialogue systems. We analyze the effects of speech recognition accuracy, as measured by Word Error Rate (WER), on other

The TREC 2001 Video Track: Information Retrieval on Digital Video Information

September 16, 2002
Author(s)
Alan Smeaton, Paul D. Over, C Costello, Arjen P. Vries, D Doermann, A Hauptmann, M Rorvig, J R. Smith, W Lide
The development of techniques to support content-based access to archives of digital video information has recently started to receive much attention from the research community. During 2001, the annual TREC activity, which has been benchmarking the

Rotational Hysteresis of Exchange-Spring Magnets

September 13, 2002
Author(s)
J.S. Jiang, S D. Bader, H Kaper, G Leaf, Robert D. Shull, Alexander J. Shapiro, V S. Gornakov, Valerian I. Nikitenko, C L. Platt, A. E. Berkowitz, S David, E E. Fullerton
We highlight our experimental studies and micromagnetic simulations of the rotational hysteresis in exchange-spring magnets. Magneto-optical imaging and torque magnetometry measurements for SmCo/Fe exchange-spring films with uniaxial in-plane anisotropy

Application of an On-Line Weld Monitoring System

September 12, 2002
Author(s)
Thomas A. Siewert, Ivan Samardzic, Stefanija Klaric
quisition analysis and real-time manipulation of the welding parameters offer added controls over the weld quality. Thanks to the continual development of information technology and electronics, it is possible to improve the systems for monitoring of the

The Flying Carpet: A Tool to Improve Ship Repair Efficiency

September 12, 2002
Author(s)
James S. Albus, Roger V. Bostelman, Frederick M. Proctor, William P. Shackleford, Alan M. Lytle
NIST is working directly with industry to improve repair and conversion operations of ships in dry dock. Similarly, this work allows transfer of technology to shipbuilding, aircraft maintenance, construction, and other industries requiring worker-access to

A Novel Multiplex for Simultaneous Amplification of 20 Y Chromosome STR Markers

September 10, 2002
Author(s)
John M. Butler, R Schoske, Peter M. Vallone, Margaret C. Kline, A J. Redd, M F. Hammer
A multiplex PCR assay capable of simultaneously amplifying 20 Y-chromosome short tandem repeat (STR) markers has been developed to aid human identity testing and male population studies. These markers include all of the Y STRs that make up the extended

Rabi Oscillations in a Large Josephson Junction Qubit

September 9, 2002
Author(s)
John M. Martinis, Sae Woo Nam, Joe Aumentado, C Urbina
We have designed and operated a circuit based on a large-area current-biased Josephson junction whose two lower energy quantum levels could be used to implement a solid-state qubit. The circuit allows measurement of the qubit states with a fidelity of 85%

Interface-Driven Model-Based Generation of Java Test Drivers

September 3, 2002
Author(s)
Mark Blackburn, Robert Busser, Aaron Nauman, Ramaswamy Chandramouli
This paper extends prior work in model-based verification and describes interface-driven analysis that combines with a requirement model to support automated generation of Java test scripts. It describes concepts of models and test driver mappings using

Test Procedures for Electric Motors Test Under 10 CFR Part 431

September 3, 2002
Author(s)
Ken L. Stricklett, M Vangel
The procedures for electric motor efficiency testing promulgated by Part 431 of Chapter II of Title 10, Code of Federal Regulations are discussed. The operating characteristics of the sampling plans for certification and enforcement testing are presented
Displaying 42751 - 42775 of 73829
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