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Displaying 5151 - 5175 of 7113

Effective Hamiltonian Study of PZT 95/5

January 21, 2002
Author(s)
K Leung, Eric J. Cockayne, A F. Wright
An effective Hamiltonian is constructed for PbZr0.95Ti0.05O3. It is parameterized using ab initio results computed in the virtual crystal approximation. The phase diagram depends sensitively on the energetic competition between the stable orthorhombic

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

Window-Based Applications of TRC Databases: Structure and Internet Distribution

January 1, 2001
Author(s)
X. Yan, Qian Dong, Michael D. Frenkel, K. R. Hall
Thermophysical and thermochemical property data on organic compounds provide vital background information for scientific and engineering communities in both academic and industrial environments. The Thermodynamics Research Center (TRC) has collected an

Quasi-TEM Characteristic Impedance of Micromachined CMOS Coplanar Waveguides

May 5, 2000
Author(s)
Mehmet Ozgur, V. Milanovic, C. A. Zincke, Michael Gaitan, Mona E. Zaghloul
Micromachined coplanar waveguides fabricated in CMOS technology consist of glass-encapsulated finite-thickness metal conductor strips, fully suspended by selective etching of the silicon substrate. Determination of the quasi-TEM mode characteristic

Security Implementations of Active Content

March 30, 2000
Author(s)
Wayne Jansen, Athanasios T. Karygiannis
… against the new risks they pose to an organization s computing environment. Security is not black or white, but …

Superconducting Thin-Film Transformers at Microwave Frequencies

June 1, 1999
Author(s)
A. H. Miklich, J. X. Przybysz, T. J. Smith, Samuel Benz, Todd E. Harvey
We describe the use of thin-film superconducting transformers at frequencies up to 20 GHz. Transformers with turns ratios of 2,3, and 7 were fabricated out of Nb and tested in a liquid-He Dewar. The measured S-parameters showed considerably less bandwidth

The DLMF Project: A New Initiative in Classical Special Functions

June 1, 1999
Author(s)
Daniel W. Lozier
NIST (formerly, National Bureau of Standards) has started an ambitious project that aims to produce a successor to Abramowitz and Stegun's {\em Handbook of Mathematical Functions}, published by the National Bureau of Standards in 1964 and reprinted by

STEP AP213 Coverage Analysis

August 1, 1998
Author(s)
Shaw C. Feng, Lihong Qiao
This report provides a quantitative coverage analysis of a draft Application Protocol (AP) for numerically controlled machining process plans in an international standard for product data representation and exchange. The analysis addresses the

Analysis of Variability in the Design of Wood Products Under Imprecision

July 1, 1997
Author(s)
Ronald Giachetti, R Young
The design and analysis of many products is performed with imprecisely known parameters, relationships, and environmental conditions. This is especially true for wood products which exhibit greater variability than most materials. Fuzzy set theory applied

4-D/RCS Version 1.0: A Reference Model Architecture for Demo III

June 27, 1997
Author(s)
James S. Albus
4-D/RCS is a reference model architecture that provides a theoretical foundation for designing, engineering, integrating, and testing intelligent controllers for unmanned ground vehicle systems. 4-D/RCS integrates the NIST (National Institute of Standards

Combustion of a Spherical Diffusion Flame in a Radiative Field.

November 6, 1994
Author(s)
Z Zhang, O A. Ezekoye
One methodology for modeling fire induced flow fields is based upon a Lagrangian view of the fire. Large scale processes are modeled using a Large Eddy Simulation (LES) method and are then appropriately coupled to a subgird scale model of the small scale

Reference Architecture for Machine Control Systems Integration: Interim Report

January 1, 1994
Author(s)
M. K. Senehi, Thomas R. Kramer, John L. Michaloski, Richard Quintero, Steven R. Ray, William G. Rippey, S Wallace
The Manufacturing Engineering Laboratory (MEL) at the National Institute of Standards and Technology (NIST), has been conducting research on control of mechanical systems for more than sixteen years. The Intelligent Systems Division and the Manufacturing

STEP On-Line Information Service (SOLIS)

January 1, 1994
Author(s)
Gaylen Rinaudot
This document contains an overview and describes the objectives of the STEP (Standard for the Exchange of Product model Data) On-Line Information Service (SOLIS). This report is also intended to provide a general explanation of this service and its

Uncertainty Intervals for Polarized Beam Scattering Asymmetry Statistics

July 1, 1993
Author(s)
Kevin Coakley, Jabez J. McClelland, Michael H. Kelley, Robert Celotta
In many scattering experiments, the quantity of most direct physical interest is a measure of the difference between two closely related scattering signals, each generated by a Poisson scattering process. This difference is often expressed in terms of an

A Framework for Semiconductor Manufacturing

August 1, 1988
Author(s)
Brian Catron
Manufacturers confront a common problem of integrating a factory with components from multiple vendors. Ever changing market demands compound integration problems by requiring flexibility in manufacturing. The Automated Manufacturing Research Facility

Representing Workspace and Model Knowledge for a Robot with Mobile Sensors

July 2, 1984
Author(s)
Michael O. Shneier, Ernest Kent, P Mansbach
A representation is described for supplying a robot manipulator with information about its workspace. Information is obtained from sensors that move with the manipulator. Spatial information is stored in an octree, allowing fast computation of which parts

High Resolution Raman Spectroscopy of Gases

August 8, 1967
Author(s)
Alfons Weber
A review is presented of high-resolution Raman spectroscopy of gases, including spontaneous, incoherent Raman spectroscopy, as well as of non-linear, coherent techniques for coherent anti-Stokes scattering (CARS) and stimulated Raman spectroscopy in the

Morphological Partitioning of Ethylene Defects in Random Propylene-Ethylene Copolymers

August 1, 2000
Author(s)
R G. Alamo, David L. VanderHart, Marc R. Nyden, L Mandelkern
A series of four propylene/ethylene, metallocene-catalyzed copolymer samples, with ethylene mole fractions ranging from 0.8 to 7.5 mol % and melt-crystallization histories of cooling at 1 C/min, were studied by 13C solid state NMR techniques. The principal

Investigation of the effect of peptide p5 targeting CDK5-p25 hyperactivity on Munc18-1(P67) regulating neuronal exocytosis using molecular simulations

July 2, 2024
Author(s)
Tejaswi Tammareddy, Walid Keyrouz, Ram Sriram, Harish Pant, Antonio Cardone, Jeffery Kluada
Munc18–1 is an SM (sec1/munc-like) family protein involved in vesicle fusion and neuronal exocytosis. Munc18–1 is known to regulate the exocytosis process by binding with closed- and open-state conformations of Syntaxin1, a protein belonging to the SNARE

Simulation of a Single Asperity Impacts at Head-Disk Interface

October 12, 2021
Author(s)
Tze J. Chuang, Stephen M. Hsu
During the track accessing mode of a hard disk drive, the flying height of the slider over the disk surface becomes smaller and smaller as the demand in data storage a real density increases. As a result, the propensity of glide avalanche is bound to
Displaying 5151 - 5175 of 7113
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