ADVANCES
IN CIRCUITS AND SYSTEMS 6, November 2005
A
quarterly news service of the IEEE Circuits and Systems
Society
Editor:
Martin Hasler VP Technical Activities
CONTENTS
1. New Advances in Multi-Directional Multi-Scroll Chaos Generation
4. Topology Control in Wireless
Ad Hoc and Sensor Networks
1. New Advances in Multi-Directional
Multi-Scroll Chaos Generation
Description by Wallace K. S. Tang:
Recently, generating
complex multi-scroll chaotic attractors via simple electronic circuits has seen
rapid development. Ref. [1] introduced an approach based on hysteresis circuit
series for creating one-directional n-scroll, two-directional planar grid
scroll, and three-directional spatial grid scroll attractors with rigorous
mathematical verifications. Ref. [2] initiated another approach based on
saturated circuit series for the same tasks, namely, generating one-directional
n-scroll, two-directional planar grid scroll, and three-directional spatial grid
scroll attractors,also with rigorously mathematical proofs.
References:
Communicated by the Technical Committee on Nonlinear Circuits
and Systems
Description by Chin-Teng
Lin: Neural
spike trains in rats' motor cortices were recorded for real-time control tasks.
The rat was placed in a conditioning chamber to decide which one of two paddles
should be activated to shift the cue light to the center. Using one to six
principal components with a Bayes classifier achieved classification accuracy
comparable to a more sophisticated support vector classifier.
Communicated
by the Technical Committee on Neural
Systems and Applications
Descriptions
by Chin-Teng Lin:
Brain-machine interface models are used for interpreting the
neural activity generated in motor tasks. A nonlinear dynamical neural network
is trained to predict the hand position of primates from neural recordings in a
reaching task paradigm. From the model roles are attributed to the sampled
motor, premotor, and parietal cortices in generating hand movements and a
temporal sensitivity measure is
derived.
Communicated by the Technical Committee on
Neural
Systems and Applications
4.
Topology Control in Wireless Ad Hoc and Sensor
Networks
Description by Krishnaiya
Thulasiraman: Reducing energy consumption (aimed at
extending the network lifetime) and radio interference (aimed at increasing the
network traffic carrying capacity) are important issues in wireless ad hoc and
sensor networks. Topology control aims to control the graphs underlying the
networks so that some global graph property such as connectivity is maintained
while reducing energy consumption and radio interference. Overview
article.
Communicated by the Technical Committee on Graph Theory and
Computing
5. Modeling Human Motion (2004 Best
paper award of the IEEE Transactions on Circuits and Systems for Video
Technology)
Description by Ling Guan:
This paper
introduces a unique paradigm, the alphabet of dynemes – the smallest contrastive
dynamic units of human movement and presents a novel notation system for
computational modeling and recognition of general human movement from monocular
video sequences. The powerful anthropometric characteristics are utilized as the
primary features for the study of biometrics and recognition of human skills in
video images.
Communicated by the Technical Committee on Visual Signal Processing and Communications