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Displaying 43501 - 43525 of 73778

Stoichiometry of Slag Hydration With Calcium Hydroxide

April 1, 2002
Author(s)
J M. Richardson, Joseph J. Biernacki, Paul E. Stutzman, Dale P. Bentz
The stoichiometry of the reaction between ground granulated blast furnace slag (GGBFS) having an empirical formula of C 7.d88^ S 7.39 and calcium hydroxide (CH) was investigated. Scanning electron microscopy (SEM) was used to determine the slag consumption

Sub-Doppler Molecular-Iodine Transitions Near the Dissociation Limit (523-498 NM)

April 1, 2002
Author(s)
W Y. Cheng, L Chen, T H. Yoon, John L. Hall, Jun Ye
A widely tunable and high-resolution spectrometer based on a frequency doubled Ti: sapphire laser is used to explore sub-Doppler transitions of iodine molecules in the wavelength range of 523-498 nm. The wavelength-dependence of the hyperfine transition

Summary of Comparison of Realizations of the ITS-90 Over the Range 83.8058 K to 933.473 K: CCT Key Comparison CCT-K3

April 1, 2002
Author(s)
Billy W. Mangum, Gregory F. Strouse, William F. Guthrie, R Pello, M F. Stock, E Renaot, Y Hermier, G Bonnier, P Marcarino, K S. Gam, K H. Kang, Y G. Kim, J V. Nicholas, D. R. White, T D. Dransfield, Y Duan, Y Qu, J Connolly, R L. Rusby, J Gray, G J. Sutton, D I. Head, K D. Hill, A G. Steele, K Nara, Tony J. Tegeler, U Noatsch, D Heyer, B Fellmuth, B Thiele-Krivoj, S Duris, A I. Pokhodun, N P. Moiseeva, A G. Ivanova, P A. de Groot, J F. Dubbeldam
This is a report to the Comite Consultatif de Thermometrie (CCT) on Key Comparison 3, i.e., the comparison of realizations of the ITS-90 over the range 83.8058 K to 933.473 K. The differences in the realizations of the various fixed points in this range of

Synchrotron White-Beam X-Ray Topography of Ribonuclease S Crystals

April 1, 2002
Author(s)
W M. Vetter, David Travis Gallagher, M Dudley
With careful experimental design indexed synchrotron white-beam X-ray topographs of ribonuclease S crystals at ambient temperature could be recorded with a definition and contrast comparable to that of monochromatic beam topographs of other proteins

Techniques for System and Data Recovery

April 1, 2002
Author(s)
William E. Burr, Joan Hash
The key asset in Federal agencies today is the information and data used to implement, sustain and maintain critical government programs and operations. Current efforts in ensuring that the United States can recover and restore activities which have great

The Bogoliubov Approach to Number Squeezing of Atoms in an Optical Lattice

April 1, 2002
Author(s)
K Burnett, M Edwards, Charles W. Clark, M Shotter
We describe an approach for finding the number squeezing for arrays of atoms in an optical lattice. It is based on a straightforward extension of the Bogoliubov method. We discuss the conditions for optimizing squeezing and how to predict what will be

The Tenth Text Retrieval Conference, TREC- 2001

April 1, 2002
Author(s)
Ellen M. Voorhees, Donna K. Harman
TREC 2001 is the latest in a series of workshops designed to foster research in information retrieval and related tasks. This year's conference consisted of six different tasks, including a new task on content-based retrieval of digital video. The overview

The TREC-2001 Filtering Track Report

April 1, 2002
Author(s)
S E. Robertson, Ian Soboroff
The TREC-10 filtering track measures the ability of systems to build persistent user profiles which successfully separate relevant and non-relevant documents. It consists of three major subtasks: adaptive filtering, batch filtering, and routing. In

Thermomechanical Effects in Embedded Passive Materials

April 1, 2002
Author(s)
Andrew J. Slifka, Elizabeth S. Drexler
Thermomechanical fatigue was measured using electron-beam moire (EBM) and infrared (IR) microscopy. A specimen was made using FR-4 printed wiring board, (PWB), a silver-filled conductive adhesive, and a carbon-filled conductive paste. Both filled polymeric

Timing Studies of Real-Time Linux for Control

April 1, 2002
Author(s)
Frederick M. Proctor, William P. Shackleford
Linux is being used increasingly for real-time control of industrial equipment. Versions of Linux adapted to support deterministic task execution are freely available. The resolution of task timing is much higher than for typical user-level processes, on

Transpinnor: A New Giant Magnetoresistive Spin-Valve Device

April 1, 2002
Author(s)
E J. Torok, S Zurn, S Bae, P J. Chen, William F. Egelhoff Jr., L Sheppard, R Spitzer, J Judy
This paper discusses the fundamental physics and device-operating mechanisms of Transpinnor, a kind of multi-functional active solid state device, newly designed by Integrated magnetoelectronics corporation (IME). The Transpinnor is the modified Wheatstone

TREC-2001 Interactive Track Report

April 1, 2002
Author(s)
William Hersh, Paul D. Over
In the TREC 2001 Interactive Track six research teams carried out observational studies which increased the realism of the searching by allowing the use of data and search systems/tools publicly accessible via the Internet. To the extent possible

A New Analytical Model of Shared Backup Path Provisioning in GMPLS Networks

March 31, 2002
Author(s)
San-Nan K. Lee, David W. Griffith, N-O Song
As GMPLS and its supporting set of protocols develop into a viable control plane for optical networks, an important function that they will need to support will be the protection and restoration function that has been a major feature of legacy optical

Architecting a Simulation and Development Environment for Multi-Robot Teams

March 20, 2002
Author(s)
James S. Albus, Stephen B. Balakirsky, Elena R. Messina
Collaborative multi-robot teams have great potential to add capabilities and minimize risk within the military domain. The composition of these teams may range from multiple copies of the same model to heterogeneous ground, air, and water vehicles

Evaluation of the Computer Fire Model DETACT-QS

March 20, 2002
Author(s)
Morgan J. Hurley, Daniel M. Madrzykowski
The proper use of engineering design methods requires an understanding of their applicability and limitations, since all design methods are, at least to a certain extent, empirically based. Equations or constants used within design methods are frequently

Model of Electrochemical Double Layer" Using the Phase Field Method

March 20, 2002
Author(s)
William J. Boettinger, Geoffrey B. McFadden, James A. Warren, Jonathan E. Guyer
We present the first application of phase field modeling to electrochemistry. A free energy functional that includes the electrostatic effect of charged particles leads to rich interactions between concentration, electrostatic potential, and phase
Displaying 43501 - 43525 of 73778
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