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Displaying 7801 - 7825 of 9859

EQUATION OF STATE AND THERMOPHYSICAL PROPERTIES OF HELIUM-3

April 3, 2007
Author(s)
Yonghua Huang, G.B. Chen, V. Arp, Ray Radebaugh
Experimental data of the thermophysical properties of 3He were mined into a searchable database. Equilibrium equations along the vapor-liquid and liquid-solid lines were proposed. A general equation of state for normal fluid 3He based on the Debye specific

Evaluation of the 3D Compositional Fluctuation Effect on Line-Edge-Roughness

February 25, 2007
Author(s)
Shuhui Kang, Wen-Li Wu, B D. Vogt, Vivek Prabhu, Eric K. Lin, Karen Turnquest
Line-edge-roughness (LER) and the relationship to resist processing and materials design is a critical problem for sub-65 nm photolithography. In this work we investigate how chemical composition fluctuations (heterogeneity) produced by the reaction

Traceable Micro-Force Calibration for Instrumented Indentation Testing

February 13, 2007
Author(s)
Douglas T. Smith, Gordon A. Shaw, Richard Seugling, Jon R. Pratt, Dan Xiang
We describe the development, performance and application of an accurate SI-traceable force calibration and verification system for potential use in the field calibration of commercial instrumented indentation testing (IIT) instruments. The system consists

Fast Algorithms for Structured Least Squares

April 1, 2006
Author(s)
Anoop Kalsi, Dianne M. O'Leary
We consider the problem of solving least squares problems involving a matrix M of small displacement rank with respect to two matrices Z1 and Z2. We develop formulas for the generators of the matrix MHM in terms of the generators of M and show that the

Impulsive Loading of Cellular Media in Sandwich Construction

July 31, 2005
Author(s)
Joseph A. Main, George A. Gazonas
Motivated by recent efforts to mitigate blast loading using energy absorbing materials, this paper investigates the uniaxial crushing of cellular media in sandwich construction under impulsive pressure loading. The cellular core material is modeled using a

Achieving Intelligent Performance in Autonomous On-Road Driving

October 1, 2004
Author(s)
Craig I. Schlenoff, J L. Evans, Anthony J. Barbera, James S. Albus, Elena R. Messina, Stephen B. Balakirsky
… and comparing that with accomplishments to date, analyzing computing power requirements by comparison with the human …

Emissivity Modeling of Thermal Radiation Sources With Concentric Grooves

July 1, 2004
Author(s)
A Prokhorov, Sergey Mekhontsev, Leonard Hanssen
Monte Carlo based specialized software has been applied to the statistical modeling of effective emissivity of radiators with concentric grooves of trapezoidal and triangular profile. A specular-diffuse model is used in which the thermal emission from the

Tuning Spectral Properties of Fullerenes by Substitutional Doping

May 1, 2004
Author(s)
Rui-Hua Xie, Garnett W. Bryant, G Sun, T Kar, Z Chen, V H. Smith, Y Araki, N Tagmatarchis, H Shinohara, O Ito
We propose a substitutional doping approach to achieve tunable optical properties from fullerenes. Taking Cd60 as an example and using time-dependent density functional theory, we compute the absorption spectra of heterofullerenes Cd60-dn-dm-NdnBdm, and

Cable-Based Metrology System for Sculpting Assistance

September 1, 2003
Author(s)
R L. Williams, James S. Albus, Roger V. Bostelman
ABSTRACT A novel cable-based metrology system is presented wherein six cables are connected in parallel from ground-mounted string pots to the moving object of interest. Cartesian pose can be determined for feedback control and other purposes by reading

Monte Carlo Simulation of Noise Parameter Uncertainties

November 1, 2002
Author(s)
James P. Randa, Wojciech Wiatr
We present results for uncertainties in noise-parameter measurements, obtained using a Monte Carlo simulation of the measurements. Sets of data were generated to simulate measurements on a low-noise amplifier, with given uncertainties in the underlying

Mitigating Autogeneous Shrinkage by Internal Curing

October 1, 2002
Author(s)
M R. Geiker, O M. Jensen
The use of internal curing is seen to be a highly effective means of mitigating autogenous shrinkage in cement mortars (w/s = 0.35, 8 % silica fume). Two different sources of internal water supply are compared: 1) replacement of a portion of the sand by

Testing STEP-NC Implementations

October 1, 2002
Author(s)
Allison Barnard Feeney, Simon P. Frechette
STEP (STandard for the Exchange of Product model data, ISO 10303) data for numerical control, or STEP-NC, is intended to provide full product and process data interoperability between computer-aided manufacturing systems and machine tool controllers

Spin-Other-Orbit Interaction and Magnetocrystalline Anisotropy

August 23, 2001
Author(s)
Mark D. Stiles, S Halilov, R Hyman, A Zangwill
We report the effect of the two-body, spin-other-orbit interaction on the magnetocrystalline anisotropy energy of the 3d transition metals. The relevant energy differences were computed for bcc Fe, fcc Ni, and hcp Co using the linearized augmented plane
Displaying 7801 - 7825 of 9859
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