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NIST Authors in Bold

Displaying 44701 - 44725 of 73697

Intron and Exons

October 17, 2001
Author(s)
Arlin B. Stoltzfus
An intron (or intervening sequence) is a segment of RNA excised from a gene transcript, with concomitant ligation of flanking segments called exons. Introns of some type are found in every kingdom of cellular life, and also in viruses, bacteriophages and

Surface magnetic phase diagram for a semi-infinite ferromagnet

October 12, 2001
Author(s)
Pavel Kabos, David P. Pappas
The phase diagram for the orientation of the surface region is calculated in the parameter space defined by the surface and bulk anisotropy in semi-infinite ferromagnetic systems and in thin ferromagnet films. Surface magnetic canting always occurs when

Query Expansion Seen Through Return Order of Relevant Documents

October 10, 2001
Author(s)
Walter S. Liggett Jr
There is a reservoir of knowledge in data from the TREC evaluations that analysis of precision and recall leaves untapped. This knowledge leads to better understanding of query expansion as this paper demonstrates. In many TREC tasks, the system response

Government Activity to Increase Benefits from the Global Standards System

October 3, 2001
Author(s)
Roger Marks, Robert E. Hebner
The economic development of the Twentieth Century was accompanied and enhanced by the increasing use of documentary standards, largely developed by industry. In the current environment, companies and nations in global competition adopt various strategies

A Classical Kinetic Theory Approach to Lattice Boltzmann Simulation

October 1, 2001
Author(s)
Nicos 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

A Methodology for Compensating Errors Detected by Process-Intermittent Inspection

October 1, 2001
Author(s)
Herbert T. Bandy, M A. Donmez, David E. Gilsinn, Michael Kennedy, Kenneth W. Yee, Alice V. Ling, Neil D. Wilkin
This report describes principles and methodology for compensating geometric errors of machined parts due to machining processes. The error tendencies are identified by on-machine inspection of the part before the finish cut. Tool path adjustments

A New Approach to Lattice Boltzmann Simulation

October 1, 2001
Author(s)
Nicos Martys
A new approach to lattice Boltzmann simulation is introduced which avoids the direct numerical determination of the single-particle distribution from the Boltzmann collision operator. Instead, one starts from the Chapman-Enskog expansion of the single

Accuracy and Versatility of the NIST M48 Coordinate Measuring Machine

October 1, 2001
Author(s)
John R. Stoup, Theodore D. Doiron
The NIST Is continuing to develop the ability to perform accurate, traceable measurements on a wide range of artifacts using a very precise, error-mapped coordinate measuring machine (CMM). The NIST M48 CMM has promised accuracy and versatility for many

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
Displaying 44701 - 44725 of 73697
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