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Displaying 43651 - 43675 of 73812

The New Beamline 3 at SURF III for Source-Based Radiometry

March 1, 2002
Author(s)
Ping-Shine Shaw, D A. Shear, R Stamilio, Uwe Arp, Howard W. Yoon, Robert D. Saunders, Albert C. Parr, Keith R. Lykke
The Synchrotron Ultraviolet RAdiation Facility (SURF III) at the National Institute of Standards and Technology provides a unique opportunity for high-accuracy UV to infrared radiometry due to the 70-fold improvement in the uniformity of the magnetic field

The New UV Radiometry Facility at SURF

March 1, 2002
Author(s)
Ping-Shine Shaw, Keith R. Lykke, R Gupta, Uwe Arp, Thomas B. Lucatorto, Albert C. Parr
The Synchrotron Ultraviolet Radiation Facility (SURF III) at the National Institute of Standards and Technology (NIST) provides a unique opportunity for high-accuracy VUV to visible radiometry with the completion of a recent upgrade to improve the

The superconducting strand for the CMS solenoid conductor

March 1, 2002
Author(s)
B Cure, B Blau, D Campi, Loren F. Goodrich, I L. Horvath, F Kircher, R Liikamaa, J Sepp{umlat}al{umlat}a, R P. Smith, J Teuho, L Vieillard
The Compact Muon Solenoid (CMS) is one of the general-purpose detectors to be provided for the LHC project at CERN. The design filed of the CMS superconducting magnet is 4 T, the magnetic length is 12.5 m and the free bore is 6 m. Approximately 2000 km of

The Trouble with Calcium Floride

March 1, 2002
Author(s)
John H. Burnett, Zachary H. Levine, Eric L. Shirley
We discuss the intrinsic birefringence of calcium fluoride and othercrystalline materials that may be used in the optics for 193nm and 157nmlithography, including the characterization of the effect and itsimplications for performance of lens systems at

The Visible Cement Data Set

March 1, 2002
Author(s)
Dale P. Bentz, S Mizell, Steven G. Satterfield, J E. Devaney, William L. George, Peter M. Ketcham, James R. Graham, J E. Porterfield, Daniel A. Quenard, F A. Vallee, H Sallee, E Boller, J Baruchel
With advances in X-ray microtomography, it is now possible to obtain three-dimensional representations of a material's microstructure with a voxel size of less then one micrometer. The Visible Cement Data Set represents a collection of 3-D data sets

Transformation, Ranking, and Clustering for Face Recognition Algorithm Comparison

March 1, 2002
Author(s)
Stefan D. Leigh, Nathanael A. Heckert, Andrew L. Rukhin, J G. Phillips, Elaine M. Newton, M Moody, K Kniskern, S Heath
The performance of face recognition algorithms is recently of increased interest, although to date empirical analyses of algorithms have been limited to rank-based scores such a cumulative match score and receiver operating characteristic. This paper

Transient Heating Study of Microhotplates by Using a High-Speed Thermal Imaging System

March 1, 2002
Author(s)
Muhammad Afridi, David W. Berning, Allen R. Hefner Jr., John S. Suehle, Mona E. Zaghloul, Eric Kelley, Zharadeen R. Parrilla, Colleen E. Hood
A high-speed thermal imaging system is used to investigate the dynamic thermal behavior of MEMS-based (MicroElectroMechanical Systems) microhotplate devices. These devices are suspended microstructures fabricated in CMOS technology and are used in various

DNA Hydrogel Plugs Immobilized in Microfluidic Channels with Improved Stability

February 28, 2002
Author(s)
Rebecca A. Zangmeister, K G. Olsen, David J. Ross, Michael J. Tarlov
It has been previously demonstrated that DNA, modified on the 5' end with an acrylic acid group, can be incorporated into a polyacrylamide hydrogel matrix. These types of DNA containing gels have recently been immobilized in plastic microfluidic channels

IT Security for Industrial Control Systems

February 28, 2002
Author(s)
Joseph Falco, Frederick M. Proctor, Keith A. Stouffer, Albert J. Wavering
The National Institute of Standards and Technology (NIST) is working to improve the IT security of networked digital control systems used in industrial applications. This effort is being carried out through the Process Control Security Requirements Forum

Phase Field Modeling of Elastic Domain Structures in Constrained Layers

February 28, 2002
Author(s)
Julia Slutsker
The formation and evolution of polydomain microstructure under external stress in the constrained layer are investigated by phase-field simulation and analytically using homogeneous approximation. As a result of simulation it has been shown that the three

Risk Management Guidance for Information Technology Systems

February 26, 2002
Author(s)
Joan Hash
Risk Management is the process of identifying risk, assessing risk, and taking steps to reduce risk to an acceptable level. Organizations use risk assessment, the first step in the risk management methodology, to determine the extent of the potential

Observation of Latent Reliability Degradation in Ultra-Thin Oxides after Heavy-Ion Irradiation

February 18, 2002
Author(s)
John S. Suehle, Bin Wang, J. F. Conley, Eric M. Vogel, Peter Roitman, C E. Weintraub, A. H. Johnston, J B. Bernstein
Constant voltage breakdown distributions of Time-Dependent-Dielectric-Breakdown (TDDB) were obtained for both non-irradiated and irradiated 3.0 and 3.2 nm thick SiO 2 films subjected to 60Co gamma irradiation and heavy ions of 823 MeV 129 Xe (Linear Energy

Random Packings of Frictionless Particles

February 18, 2002
Author(s)
C S. O'Hern, Stephen A. Langer, A J. Liu, S R. Nagel
We study random packings of frictionless particles at T=0. The packing fraction where the pressure becomes nonzero is the same as the jamming threshold, where the static shear modulus becomes nonzero. The distribution of threshold packing fractions narrows

Surface Characterization of Laser- Ablated Polymers Used for Microfluidics

February 15, 2002
Author(s)
D L. Pugmire, E A. Waddell, R Haasch, Michael J. Tarlov, Laurie E. Locascio
Fabrication of microfluidic devices by excimer laser ablation under different atmospheres may provide variations in polymer microchannel surface characteristics. The surface chemistry and electroosmotic (EO) mobility of polymer microchannels laser ablated

Handbook of Reference Data for Nondestructive Testing: Ultrasonics Chapter

February 14, 2002
Author(s)
John A. Slotwinski
The ASTM Handbook of Reference Data for Nondestructive Testing (NDT) is a collection of previously available NDT data for use by NDT practitioners. It is intended to be a ready reference guide, and will include chapters on several of the different NDT

Powder Standard Reference Materials

February 13, 2002
Author(s)
James F. Kelly
The measurement of particle size distributions has become increasingly important for the testing and certification of equipment used in size analysis. Requirements for quality control compliance with the ISO 9000 series of quality standards have emphasized

Total-Energy-Based Structure Prediction for Decagonal Al-Ni-Co

February 11, 2002
Author(s)
M Mihalkovic, I Al-Lehyani, Eric J. Cockayne, C L. Henley, N Moghadam, J A. Moriarty, Yijun Wang, M Widom
Quasicrystals are metal alloys whose noncrystallographic symmetry and lack of structural periodicity challenge methods of both experimental structure determination and theoretical structural prediction. Here we employ total energy calculations and Monte
Displaying 43651 - 43675 of 73812
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