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Displaying 48401 - 48425 of 143806

Evaluation of Ultra-Wideband Technology for use in 3D Locating Systems

September 28, 2010
Author(s)
Adam P. Kopp, Kamel S. Saidi, Hiam Khoury
A high-powered (5 Watt peak power) ultra-wideband (UWB) ranging system was evaluated for use as the basis for a 3-Dimensional (3D) locating system by comparing tracking results to a ground truth system. The UWB ranging system is composed of five ranging

Multi-Frequency Approach to Vector-Network-Analyzer Scattering-Parameter Measurements

September 28, 2010
Author(s)
Arkadiusz C. Lewandowski, Dylan F. Williams, Wojciech Wiatr
We present a multi-frequency approach to vector-network-analyzer scattering-parameter measurements. This novel approach accounts for the relationships between the measurements at different frequencies, and thus breaks with the traditional paradigm to

Seeking Science and Technology

September 28, 2010
Author(s)
Stacy M. Bruss, Keith R. Martin
Although not everyone can be a sci-tech information specialist, science, technology, and medicine (STM) tends to overlap with other research agendas. This session will start with a general overview of science and technology websites. It will then focus on

A DS-CDMA Interference Cancellation Technique for Body Area Networks

September 27, 2010
Author(s)
Wen-Bin Yang, Kamran Sayrafian
A low complexity Parallel Interference Cancellation (PIC) technique that is applicable to body area networks is presented. Using Direct-Sequence Code Division Multiple Access (DS-CDMA), the technique aims at suppressing interference caused by rapid changes

Fatigue Pre-Cracking Curved Wide Plates in Bending

September 27, 2010
Author(s)
Mark D. Richards, Timothy S. Weeks, Joseph D. McColskey, Bo Wang, Yong-Yi Wang
In support of using high strength steels for strain-based design of pipeline, curved wide plate (CWP) tests in tension are being performed on API 5L X100 pipes of 36-inch (916-mm) diameter and 0.75-inch (19-mm) wall thickness. The CWP tests are being used

MEASUREMENT OF CTOA OF PIPE STEELS USING MDCB AND DWTT SPECIMENS

September 27, 2010
Author(s)
Christopher N. McCowan, S. Xu, W. R. Tyson, R. Eagleson, Elizabeth S. Drexler, J. D. McColskey, Philippe P. Darcis
Two types of specimen for crack tip opening angle (CTOA)measurement have been investigated for pipeline applications,i.e., the modified double cantilever beam (MDCB) (at NIST)and the drop-weight tear test (DWTT) specimen (at CANMET). Results of effects of
Displaying 48401 - 48425 of 143806
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