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Displaying 43001 - 43025 of 73896

A Native Intelligence Metric for Artificial Systems

August 1, 2002
Author(s)
John A. Horst
We define native intelligence as the specified complexity inherent in the information content of an artificial system. The artificial system is defined as a system that can be encoded in some general purpose language, expressed minimally as some finite

A New Investigation of Iron Cross Sections via Spherical-Shell Transmission Measurements and particle Transport Calculations

August 1, 2002
Author(s)
J M. Adams, A Alpan, Allan D. Carlson, S Gardner, S M. Grimes, A Haghighat, V Kucukboyaci, T N. Massey, A Patchimpattapong, M T. Wenner
We are engaged in a multi-year project to study neutron scattering interactions in iron, the principal objective of which is to investigate the well-known deficiency that exists in reactor pressure vessel neutron fluence determinations. Specifically, we

A New NIST Mitochondrial DNA Interactive Website

August 1, 2002
Author(s)
Barbara C. Levin, L A. Tully, Diane K. Hancock, Frederick P. Schwarz, M S. Lee
Every human cell has from a few dozen to several thousand mitochondria each of which contain mitochondrial DNA (mtDNA). The sequence of the entire human mtDNA (16,569 base pairs) was determined and published by Anderson et al. in 1981. A mtDNA standard

A Privilege Management Scheme for Mobile Agent Systems

August 1, 2002
Author(s)
Wayne Jansen
In this paper, we describe a general method for controlling the behavior of mobile agent-system entities through allocation of privileges. Privileges refer to policy rules that govern the access and use of computational resources and services. The scheme

Automating the Calibration of Two Piston Gage Pressure Balances

August 1, 2002
Author(s)
Douglas A. Olson, T Kobata
We propose a method to automate the data-gathering process in the cross-float calibration of one piston gage pressure balance against a second piston gage pressure balance. Rather than adjusting small trim masses until the balances generate equal pressure

Cell Membrane Hybrid Bilayers Containing the G-Protein-Coupled Receptor CCR5

August 1, 2002
Author(s)
N M. Rao, Vitalii I. Silin, K D. Ridge, John T. Woodward IV, Anne L. Plant
A hybrid bilayer membrane is a planar model membrane that is formed at an alkanethiol monolayer-coated gold surface by the spontaneous reorganization of phospholipid vesicles. Membrane vesicles from monkey kidney COS-cells also reorganize at an alkanethiol

Concealed Weapons Detection using an Uncooled Millimeter-wave Microbolometer System

August 1, 2002
Author(s)
Erich N. Grossman, V. A. Bhupathiraju, Aaron J. Miller, Carl D. Reintsema
We describe the status of, and present the first imagery obtained using, an active uncooled mm-wave microbolometer-based imaging system. The microbolometers consist of 2 mm x 6 mm x .02 mm Nb films, coupled to the incident field by annular slot antennas

Detection Limit of Isotope Dilution Mass Spectrometry

August 1, 2002
Author(s)
Lee L. Yu, John D. Fassett, William F. Guthrie
The detection limit is an important figure of merit for evaluating instrumentation and analytical methods. While the detection limit for techniques using linear calibration functions has been studied extensively, this fundamental metric has rarely been

Development of a Tunable LED-Based Colorimetric Source

August 1, 2002
Author(s)
Steven W. Brown, C Santana, George P. Eppeldauer
A novel, spectrally tunable light-source utilizing light emitting diodes (LED's) for radiometric, photometric, and colorimetric applications is described. The tunable source can simulate standard sources and can be used as a transfer sources and can be

Diffractive Optics From Self-Assembled DNA

August 1, 2002
Author(s)
Zachary H. Levine
An algorithm is presented for assembling tiles into a variable spaced grating, the one-dimensional analogue of Fresnel zone plate. The algorithm supports blazing. The x-ray properties of such a grating, assumed to be constructed form DNA are estimated
Displaying 43001 - 43025 of 73896
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