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Displaying 37776 - 37800 of 73929

Representation of Acoustic Waves in Unbounded Domains

January 1, 2005
Author(s)
Bradley K. Alpert, Y Chen
Compact, time-harmonic, acoustic sources produce waves that decay too slowly to be square-integrable on a line away from the sources. We introduce an inner product, arising directly from Green s second theorem, to form a Hilbert space of these waves and

RF Behavioural Modelling Using Multisine Excitations

January 1, 2005
Author(s)
Kate Remley, Dominique Schreurs
Large-signal behavioural models for RF devices have historically been based on single- or two-tone data. This type of excitation is often not very representative, as RF devices, being used in telecommunication systems, are usually subjected to modulated

Rich Transcription 2005 Spring Evaluation Website

January 1, 2005
Author(s)
John S. Garofolo
This paper demonstrates that, for large-scale tests, the match and non-match similarity scores have no specific underlying distribution function. The forms of these distribution functions require a nonparametric approach for the analysis of the fingerprint

Scanning Electron Microscope Dimensional Metrology using a Model-based Library

January 1, 2005
Author(s)
John S. Villarrubia, Andras Vladar, Michael T. Postek
The semiconductor electronics industry places significant demands upon secondary electron imaging to obtain dimensional measurements that are used for process control or failure analysis. Tolerances for measurement uncertainty and repeatability are smaller

Scattering-Parameter Models and Representations for Microwave Mixers

January 1, 2005
Author(s)
Dylan F. Williams, Fabien Ndagijimana, Catherine A. Remley, Joel Dunsmore, Sean Hubert
We present straight-forward models and representations for RF and image mixers, and develop simple rules for transforming electrical problems involving mixers and signals at several frequencies into equivalent single-frequency problems. We show how those

Schematic Models of Molecular Self-Organization

January 1, 2005
Author(s)
K VanWorkum, Jack F. Douglas, Wolfgang Losert
Molecular self-organization is central to the formation of numerous biological structures and the emulation of this process through the creation of synthetic counterparts offers great promise for nanofabrication. Our approach to understanding the

Security Considerations for Voice Over IP Systems

January 1, 2005
Author(s)
David R. Kuhn, Thomas J. Walsh, S G. Fries
Voice over Internet Protocol (VOIP) refers to the transmission of speech across data-style networks. This form of transmission is conceptually superior to conventional circuit switched communication in many ways. However, a plethora of security issues are
Displaying 37776 - 37800 of 73929
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