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Displaying 41051 - 41075 of 73970

Flexible Modeling and Simulation for Mass Customization Manufacturing

June 1, 2003
Author(s)
Guixiu Qiao, R F. Lu, Frank H. Riddick
Mass Customization Manufacturing (MCM) systems possess special characteristics that make the modeling of such systems extremely difficult. These characteristics include concurrency, synchronization, and cooperation among subsystems. To support the

Fracture Toughness of Toughened Silicon Nitride by ASTM C 1421

June 1, 2003
Author(s)
George D. Quinn, J Swab, M J. Motyka
The fracture toughness of a commercial sintered reaction-bonded silicon nitride was measured by the three complementary test methods in ASTM C 1421. Precracks ranged from tiny artificial flaws introduced by Knoop indentation to millimeter long precracks in

Functional Tolerancing of a Gearbox

June 1, 2003
Author(s)
H Wang, Utpal Roy, Sudarsan Rachuri, Ram D. Sriram, Kevin W. Lyons
This paper proposes a scheme for the tolerance specification that uses the features? function information and mating condition attributes in the assembly to derive an appropriate tolerance specification as per the design intents. The proposed mirror method

Growth of superconducting single crystals

June 1, 2003
Author(s)
Debra L. Kaiser, L.F. Schneemeyer
This manuscript is a review of single crystal growth of high temperature superconducting materials. The introductory sections cover fundamentals of crystal growth with emphasis on special considerations for superconducting compounds, and the growth

Impact of Technical Noise on Supercontinuum Generation in Microstructure Fiber

June 1, 2003
Author(s)
Brian Washburn, Kristan L. Corwin, Nathan R. Newbury, R Windeler
The influence of the input laser technical noise on the noise of a generated supercontinuum is experimentally and numerically investigated. The supercontinuum technical noise is an amplified version of the input technical noise.

Inter- and Intergenerational Transmission of a Human Mitochondrial DNA Heteroplasmy Among 13 Maternally-Related Individuals and Differences Between and Within Tissues in Two Family Members

June 1, 2003
Author(s)
Koji Sekiguchi, K Kasai, Barbara C. Levin
The transmission of a C16,291C/T heteroplasmy in the HV1 region of human mitochondrial DNA (mtDNA) was examined in buccal cells from 13 maternally-related individuals across three generations and in additional tissues (hair, blood or finger nails) from

Interpreting the Signal From a Localized Fluorescence Sensor: A Study By Angle Resolved-XPS and Dynamic SIMS

June 1, 2003
Author(s)
D L. Woerdeman, W Ou, Joseph~undefined~undefined~undefined~undefined~undefined Lenhart, Richard~undefined~undefined~undefined~undefined~undefined Parnas
Angle-resolved X-ray Photoelectron Spectroscopy (XPS) and Dynamic Secondary Ion Mass Spectroscopy (DSIMS) experiments were conducted to assess the interactions between a diamine curing agent and a glycidoxysilane-modified glass substrate. This effort was

Investigation of BARC-Resist Interfacial Interactions

June 1, 2003
Author(s)
C Devadoss, Yijun Wang, R Puligadda, Joseph~undefined~undefined~undefined~undefined~undefined Lenhart, E Jablonski, Daniel A. Fischer, S Sambasivan, Eric K. Lin, Wen-Li Wu
Results are reported from studies of (A) surface versus bulk chemistry of BARC materials as a function of cure temperature, (B) the dependence of the thickness and composition of the residual layer (resist material remaining on the surface of the BARC

Isotopic Metrology of Carbon Dioxide. I. Interlaboratory Comparison and Empirical Modeling of Inlet Equilibration Time, Inlet Pressure, and Ion Source Conductance

June 1, 2003
Author(s)
R M. Verkouteren, C E. Allison, S A. Studley, K J. Leckrone
We report a pilot study of high-precision differential isotopic ratio measurements made on replicate samples of pure carbon dioxide using three instruments of identical manufacture. Measurement protocols were designed to explore the effects of sample size

Iterative Registration of 3D LADAR Data for Autonomous Navigation

June 1, 2003
Author(s)
Rajmohan Madhavan, Elena R. Messina
This paper describes an iterative algorithm for registration of 3D LADAR data. The proposed approach is iconic in nature with suitable modifications to deal with false/spurious matches, occlusions and outliers. Experimental results using data obtained from

Kinetic Pathway of the Bilayered-Micelle to Perforated-Lamellae Transition

June 1, 2003
Author(s)
Haonan Wang, M P. Nieh, Erik K. Hobbie, Charles J. Glinka, J Katsaras
Near-edge x-ray absorption fine structure (NEXAFS) spectroscopy was used to meausre simultaneously the relaxation rates of polystyrene (PS) molecules at the free surface and in the bulk. The samples were uniaxially stretched and annealed at temperatures

Kolsky Bar With Electrical Pulse Heating of the Sample

June 1, 2003
Author(s)
Eric P. Whitenton, Michael Kennedy, Matthew A. Davies, Gerald V. Blessing, Brian S. Dutterer, Richard L. Rhorer, Howard W. Yoon, Lyle E. Levine, Richard J. Fields, D Basak, Timothy J. Burns
The accuracy of simulations for modeling of machining processes is often limited due to insufficient knowledge of the material properties during machining, which can involve strain rates on the order of 104 per second or higher, plus rapid material heating

Localized Ferromagnetic Resonance in Inhomogeneous Thin Films

June 1, 2003
Author(s)
Robert McMichael, A Kunz, D J. Twisselmann
The effect of sample inhomogeneity on the ferromagnetic resonance line width is determined by diagonalization of a spin wave Hamiltonian for ferromagnetic thin films with inhomogeneities. The resonance line broadening results from the distribution of the

Micro Channel Heat Transfer, Pressure Drop and Macro Prediction Methods

June 1, 2003
Author(s)
Mark A. Kedzierski
Advances in the basic understanding of fluid physics have opened an era of unprecedented application of heat transfer processes, and fluid dynamics systems using micro channels. One of the greatest obstacles to the application of leading edge fluid physics

Microwave Surface Impedance and Nonlinear Properties of MgB 2 Films

June 1, 2003
Author(s)
James Booth, Sang Y. Lee, Kenneth Leong, J. H. Lee, J. Lim, H. N. Lee, S. H. Moon, B. Oh
We have measured the temperature dependence of the microwave surface impedance and the nonlinear response of high-quality MgB 2 films on c-cut sapphire at temperatures below 40 K. MgB 2 films with surface resistance (Rs) as low as 0.09 mOhm} at 8 K and 19

MOBY, A Radiometric Buoy for Performance Monitoring and Vicarious Calibration of Satellite Ocean Color Sensors: Measurement and Data Analysis Protocols

June 1, 2003
Author(s)
D K. Clark, Marilyn Y. Murphy, M Yarbrough, M Feinholz, S Flora, W Broenkow, B. Carol Johnson, Steven W. Brown, Y S. Kim, J Mueller
The Marine Optical Buoy (MOBY) (Clark et al. 1997) is the centerpiece of the primary ocean measurement site for calibration of satellite ocean color sensors based on independent in situ measurements. Since late 1996, the time series of normalized water

NIST Research Library Benchmark Study, 2001: Summary Report

June 1, 2003
Author(s)
P J. Deutsch, Diane Cunningham, L A. Greenhouse, Susan L. Makar, W F. Overman, Susan A. Sanders, Barbara P. Silcox
In 2002, the NIST Research Library of the Information Services Division, Technology Services, benchmarked itself against other science and technology libraries. These libraries had similar focus areas and were comparable in size. The study compared library
Displaying 41051 - 41075 of 73970
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