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Displaying 40651 - 40675 of 74196

Uncertainty Analysis for Spherical Near-Field Measurement

October 19, 2003
Author(s)
Michael H. Francis, Ronald C. Wittmann
A general approach is introduced for estimating uncertainties in far-field paramenters from spherical near-field measurements. Although the analysis is incomplete at present, we expect that as the measurement radius increases, our results will transform

Uncertainty Analysis of RCS Calibrations at the Etcheron Valley Range

October 19, 2003
Author(s)
Lorant A. Muth, Dale M. Diamond, John Liles, James Adams
We have been developing the uncertainty analysis of RCS calibrations and measurements at the Etcheron Valley RCS outdoor ground-bounce facility in the 2-18 GHz range. In this study we report on the results of the uncertainty analysis primarily at 11.3 GHz

Highly Multiplexed Assays for Measuring Polymorphisms on the Y-Chromosome

October 17, 2003
Author(s)
John M. Butler, R Schoske, Peter Vallone
A multiplex PCR assay capable of amplifying 20 Y chromosome short tandem repeat (STR) markers simultaneously has been developed. These markers include all of the Y STRs that make up the extended haplotype used in Europe (DYS19, DYS385, DYS389I/II, DYS390

The 2002 Materials Research Society (MRS) Fall Meeting report

October 17, 2003
Author(s)
Winnie K. Wong-Ng
Following tradition, the 2002 Materials Research Society (MRS) annual meeting again took place from in Boston Copely Plaza from December 1 to 6 (in the spacious Hynes Convention Center). Attending the Boston MRS Fall meeting, for many attendees, has also

A Simulation Analysis of BACnet Local Area Networks

October 15, 2003
Author(s)
W Song, S Hong, Steven T. Bushby
Cnet is a standard data communication protocol for building automation and control systems. BACnet defines an object-base model of the information that is exchanged between components of the building automation system and an application layer protocol that

Combinatorial Chemistry

October 13, 2003
Author(s)
J D. Hewes, Debra L. Kaiser, Alamgir Karim, Eric J. Amis
In 1995, the rapid fabrication of tens, hundreds, and, eventually, tens of thousands of samples in two-dimensional arrays of discrete microscaled samples (pixels) using lithography methods developed for the electronics industry was reported. Importantly

Guide to Information Technology Security Services

October 13, 2003
Author(s)
Timothy Grance, Joan Hash, Marc Stevens, K O'Neal, N Bartol
Organizations frequently must evaluate and select a variety of information technology (IT) security services in order to maintain and improve their overall IT security program and enterprise architecture. IT security services, which range from security

EMI Characterization with Parasitic Modeling for a Permanent Magnet Motor Drive

October 12, 2003
Author(s)
Xudong Huang, Pepa Elton, Jih-Sheng Lai, Allen R. Hefner Jr., David W. Berning, Shaotang Chen, Thomas Nehl
In this paper , a permanent magnet ac motor drive is tested extensively, and the prominent frequencies are identified for their relationship with the noise sources and their propagation paths. Switching characteristics of the power MOSFETs are evaluated

High Speed IGBT Module Transient Thermal Response Measurements for Model Validation

October 12, 2003
Author(s)
David W. Berning, John V. Reichl, Allen R. Hefner Jr., Mora Hernandez, Colleen E. Hood, Jih-Sheng Lai
A measurement system operates a multi-chip insulated gate bipolar transistor (IGBT) that is part of an integrated power electronic module (IPEM) in a high-pulsed-power linear mode for validation of dynamic thermal models. It is found that the gate-cathode

What is the Future for Technology Roadmaps on Optoelectronics Packaging

October 11, 2003
Author(s)
Herbert S. Bennett
Reasons for why you should become more involved with technology roadmaps for optoelectronics packaging are given. Unlike the silicon CMOS (complementary metal-oxide semiconductor) industry, the optoelectronics packaging industry does not have an

Guide to Information Technology Security Services

October 9, 2003
Author(s)
Timothy Grance, Joan Hash, Marc Stevens, Kristofor O'Neal, Nadya Bartol
Organizations frequently must evaluate and select a variety of information technology (IT) security services in order to maintain and improve their overall IT security program and enterprise architecture. IT security services, which range from security

Guide to Selecting Information Technology Security Products

October 9, 2003
Author(s)
Timothy Grance, Marc Stevens, Marissa Myers
The selection of IT security products is an integral part of the design, development and maintenance of an IT security infrastructure that ensures confidentiality, integrity, and availability of mission critical information. The guide seeks to assist in

Facility for Pulsed Extreme Ultraviolet Detector Calibration

October 8, 2003
Author(s)
Steven E. Grantham, Robert E. Vest, Charles S. Tarrio, Thomas B. Lucatorto
All of the Extreme Ultraviolet light sources currently under consideration for Extreme Ultraviolet lithography are based on plasmas that emit radiation with a wavelength of approximately 13.4 nm. These sources whether they are produced by a discharge or

RF and IF mixer optimum matching impedances extracted by large-signal vectorial measurements

October 7, 2003
Author(s)
Alessandro Cidronali, Giovanni Loglio, Jeffrey Jargon, Kate Remley, I. Magrini, Donald C. DeGroot, Dominique Schreurs, Kuldip Gupta, Gianfranco Manes
This paper introduces a new technique that allows us to measure the admittance conversion matrix of a two-port device, using a Nonlinear Vector Network Analyzer. This method is applied to extract the conversion matrix of a 0.2 micron pHEMT, driven by a 4.8
Displaying 40651 - 40675 of 74196
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