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Displaying 44976 - 45000 of 73960

Anomalous Transitions in Two-Level Systems Driven by the AC Stark Effect

October 1, 2001
Author(s)
W L. Meerts, I Ozier, Jon T. Hougen
An unusual type of non-resonant absorption signal produced by the ac Stark effect has been observed in a two-level avoided-crossing system. The theory for these anomalous transitions has been developed. The non-resonant signals have been shown to be caused

Ballistic Magnetoresistance in a Nanocontact Between a Ni Cluster and a Magnetic Thin Film

October 1, 2001
Author(s)
M Munoz, G G. Qian, N Karar, H. Cheng, I G. Saveliev, N Garcia, Thomas P. Moffat, P J. Chen, L Gan, William F. Egelhoff Jr.
We present measurements of ballistic magnetoresistance in nanocontacts grown by electrodeposition of Ni microclusters on magnetic thin films covered by aluminum oxide layers, using a technique proposed by Schad, et al. The measurements are made on a single

Classical Kinetic Theory Approach to Lattice Boltzmann Simulation.

October 1, 2001
Author(s)
N S. Martys
An approach to lattice Boltzmann simulation is described, which makes a direct connection between classical kinetic theory and contemporary lattice Boltzmann modeling methods. This approach can lead to greater accuracy, improved numerical stability and

Comparisons of Calculated and Measured Flaw Sizes

October 1, 2001
Author(s)
George D. Quinn, J Swab
Fracture mechanics often is applied in fractographic analyses in order to verigy that the correct feature has been identified as the fracture origin. This step has been codified in ASTM Standard C1322-96, Standard Practice for the Characterization of

Conformance Criteria for Enterprise-Reference Architectures

October 1, 2001
Author(s)
Jim G. Nell
he purpose of this paper is to evaluate the feasibility of imposing conformance criteria on enterprise-reference architectures. Determining whether a software implementation conforms to a specification or standard is expensive because of the number of

Conformance Resources and Information

October 1, 2001
Author(s)
Mark Skall
The National Software Reference Library (NSRL) of the U.S. National Institute of Standards and Technology (NIST) collects software from various sources and publishes file profiles computed from this software (such as MD5 and SHA-1 hashes) as a Reference

Creating Massive Entanglement of Bose-Einstein Condensed Atoms

October 1, 2001
Author(s)
Kristian Helmerson, L You
We propose a direct, coherent coupling scheme that can create massive entangled states of Bose-Einstein condensed atoms. One idea is based n an effective interaction between two atoms from coherent RAman processes through a (two atom) molecular

De la Pate de Ciment au Beton: Modlisation et Mesures Exprimentales des Proprietes Rhologiques. [Cement Paste to the Concrete Modisation and Measure Experimental of the Properties Rheology.]

October 1, 2001
Author(s)
Chiara F. Ferraris, Nicos Martys
The prediction of concrete rheological properties is essential for the correct use of the material. The composition of the concrete is nowadays complex. It is not limited to cement, aggregates and water but also includes admixtures and fillers. Therefore

Designing Quantum Dots and Quantum-Dot Solids

October 1, 2001
Author(s)
Garnett W. Bryant, W Jaskolski
To design nanocrystal nanosystems a theory for nanocrystals is needed which can be applied to nanocrystals with atomic-scale variations in composition, structure and shape. We present an empirical tight-binding theory for nanocrystal heteroanostructures

Dielectric Sleeve Resonator Techniques for Microwave Complex Permittivity Evaluation

October 1, 2001
Author(s)
Richard G. Geyer, Pavel Kabos, James R. Baker-Jarvis
Closed-form analytical solutions are derived for accurate microwave dielectric characterization of rod test specimens inserted into dielectric sleeve resonators placed certrally in a metal cavity. Low-loss sleeve resonators can be used advantageously for

Dynamic Constitutive Relations for Polarization and magnetization

October 1, 2001
Author(s)
James R. Baker-Jarvis, Pavel Kabos
New engineered artificial and metamaterials combine ferroelectrics, ferrites, wires, resonant rings, and ferromagnetic materials to obtain a desired response. In this paper we develop constitute relations for materials where the magnetization and

ebXML Technologies

October 1, 2001
Author(s)
Michael J. Kass
The National Software Reference Library (NSRL) of the U.S. National Institute of Standards and Technology (NIST) collects software from various sources and publishes file profiles computed from this software (such as MD5 and SHA-1 hashes) as a Reference

Effect of Flaw State on the Strength of Brittle Coatings on Soft Substrates

October 1, 2001
Author(s)
H W. Kim, Y N. Deng, P Miranda, Antonia Pajares, D H. Kim, H E. Kim, Brian R. Lawn
A study is made of the role of flaw state on the strength properties of brittle ceramic coating layers bonded to soft polycarbonate substrates. We introduce Vickers radial cracks at prescribed loads into the coating undersurfaces prior to bonding to

Engineering of Mind: An Introduction to the Science of Intelligent Systems

October 1, 2001
Author(s)
James S. Albus, A Meystel
This book suggests that a computational theory of mind is emerging that will enable the engineering of mind. It briefly traces the history of scientific interest in the mind and puts into perspective recent advances in knowledge about the brain. It brings

Experimental Study of the Ground Plane in Asymmetric Coupled Silicon Lines

October 1, 2001
Author(s)
Uwe Arz, Dylan Williams, Hartmut Grabinski
We use a measurement method designed for coupled lines on highly conductive substrates to characterize identical asymmetric coupled lines fabricated on lossy silicon with and without a metalization plane beneath the two signal conductors. The study

Fitting Nature's Basic Functions I. Polynomials and Linear Least Squares

October 1, 2001
Author(s)
Bert W. Rust
This paper is the first in a series on fitting combinations of basic mathematicalmathematical functions to measured data from the real world. This installmentexplains linear least squares with a special emphasis on polynomial fits. It describesthe

Fluorescence Intermittency in Single InP Quantum Dots

October 1, 2001
Author(s)
M Kuno, D P. Fromm, Alan Gallagher, David Nesbitt, O I. Micic, A J. Nozik
Fluorescence kinetics of isolated colloidal InP quantum dots (Qds) are investigated for the first time via confocal single molecule microscopyFluorescenceintermittency or blinking is observed in all QD's sampled, characterized by abrupt chanc,yes between

Forum 2000: Fluid Properties for New Technologies, Connecting Virtual Design With Physical Reality

October 1, 2001
Author(s)
James C. Rainwater, Daniel G. Friend, Howard J. Hanley, Allan H. Harvey, C D. Holcomb, Arno R. Laesecke, Joe W. Magee, Chris D. Muzny
Forum 2000 was held at the 14th symposium for Thermophysical Properties, with all symposium attendees invited. The Forum addressed the present needs and prioities for thermophysical properties measurements and the challenges facing the experimental

Fractographic Analysis of Machining Cracks in Silicon Nitride Rods and Bars

October 1, 2001
Author(s)
George D. Quinn, L K. Ives, S Jahanmir, P Koshy
A new fixture for flexural strength testing was used to evaluate the effects of machining on the flexural strength of a toughened sintered reaction-bonded silicon nitride. Different grinding procedures had various effects upon the flexure strength
Displaying 44976 - 45000 of 73960
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