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Proceedings of the 33rd Southeastern Symposium on System Theory (Cat. No.01EX460)

20-20 March 2001

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  • Proceedings of the 33rd Southeastern Symposium on System Theory (Cat. No.01EX460)

    Publication Year: 2001
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    Freely Available from IEEE
  • Personal computer assisted tutorial for Smith charts

    Publication Year: 2001, Page(s):139 - 143
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (477 KB) | HTML iconHTML

    A recognized advantage associated with the use a Smith chart is that it obviates the employment of complex algebra in solving transmission line problems. The paper focuses on combining the power of the PC, with its visual aesthetics, speed and accuracy, for the purpose of familiarizing students in the use of the Smith's graphical transmission line calculator. The demo version of the PC Smith chart... View full abstract»

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  • Author's index

    Publication Year: 2001, Page(s):431 - 432
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    Freely Available from IEEE
  • Robust optical flow estimation using invariant feature

    Publication Year: 2001, Page(s):263 - 267
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB) | HTML iconHTML

    Traditional methods for computing optical flow are mainly based on image brightness constancy. In the real world the brightness constancy usually does not hold. Here we present the idea of using invariant feature based on the brightness change model to estimate the optical flow. Both the mathematical derivation and the experiments show that the new model is better than brightness based optical flo... View full abstract»

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  • Optimal discrete/continuous control with LQR performance criterion and a general class of 3rd-order linear dynamic control variations with one zero eigenvalue

    Publication Year: 2001, Page(s):233 - 239
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB) | HTML iconHTML

    Discrete/continuous (D/C) control is a natural generalization of conventional discrete-time control in which the control is strategically varied with time, in a specified continuous manner, between each consecutive pair of sample-times. In series of previous papers by the authors (1996, 1999, 2000) the LQR optimization of discrete/continuous control variations that are restricted to be -linear-in-... View full abstract»

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  • Control of integrated radial and axial magnetic bearings

    Publication Year: 2001, Page(s):1 - 5
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB) | HTML iconHTML

    The goal of this research is to develop a magnetically suspended momentum wheel capable of actively reducing imbalance vibrations. Typically, this would require two radial magnetic bearings with separately energized x and y-axes and one axial bearing. In this system, however, the radial and axial functions were combined into a single design for a more compact and elegant package. One downside of t... View full abstract»

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  • Visual-servoing and navigation of mobile robots for target tracking applications

    Publication Year: 2001, Page(s):257 - 262
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB) | HTML iconHTML

    In this paper, we address technical issues involved with development of algorithms and control strategies for vision-based navigation and visual servoing of mobile robots for target tracking applications. The proposed procedural approach includes initial camera calibration, image acquisition, feature extraction, features decision-making. The paper discusses also some of the challenges associated w... View full abstract»

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  • Definition of poles of a linear, time-varying system

    Publication Year: 2001, Page(s):227 - 231
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB) | HTML iconHTML

    A definition of poles is presented for continuous-time, linear, time-varying systems. For a linear, time-varying state equation, a set of time-varying poles defines a stability-preserving variable change relating the original state equation to an upper triangular state equation. This definition is shown to be a generalization of existing definitions of poles of a linear, time-varying system and is... View full abstract»

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  • An online prototype speech-enabled information access tool using Java Speech Application Programming Interface

    Publication Year: 2001, Page(s):111 - 115
    Cited by:  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB) | HTML iconHTML

    The World Wide Web today has become a major force in driving the economy, and the technology. In spite of the abundance of information freely available on the Web, the information is not accessible to everyone. There are a couple of reasons for this trend. Firstly, most of this information has primarily been used by and restricted to persons who connect and use the Web via a traditional computer. ... View full abstract»

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  • A third generation CDMA receiver implementation to the cdma2000 standard

    Publication Year: 2001, Page(s):41 - 45
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB) | HTML iconHTML

    Provides a practical top-level conceptual design for a CDMA mobile unit receiver implementation. Requirements for the receiver were derived and allocated to meet the specifications outlined in the cdma2000 standard. A RAKE receiver is proposed to provide performance improvement by achieving diversity View full abstract»

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  • Development of intelligent behaviors for a mobile robot

    Publication Year: 2001, Page(s):383 - 386
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB) | HTML iconHTML

    Mobile robots are gaining more effect in our lives. However, to become a part of our daily life, mobile robot should be socially accepted by humans. Evidently, the acceptance rate will increase as human-robot interaction gets closer to human-human types of interaction. In this research, a group of independent human-like behaviors and reflection functions are developed and implemented on a RWI B-14... View full abstract»

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  • Uncalibrated vision-based mobile robot obstacle avoidance

    Publication Year: 2001, Page(s):251 - 255
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB) | HTML iconHTML

    Obstacle avoidance is an important element of mobile robot navigation. Here the obstacle avoidance problem is solved utilizing visual feedback in an optimization-based control technique. This work is part of a larger investigation of uncalibrated vision-based control of unmodelled robotic systems. Specifically, this paper will discuss the control of a mobile robot utilizing a fixed camera. The mob... View full abstract»

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  • Dynamically reconfigurable solution in the digital baseband processing for future mobile radio devices

    Publication Year: 2001, Page(s):221 - 226
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB) | HTML iconHTML

    The focus of the paper is a parallel and dynamically reconfigurable hardware architecture tailored to wireless mobile handsets. Its performance issues and potential are discussed. The paper presents the major challenges in realizing a flexible microelectronic system for mobile communication applications. The architecture design of flexible system-on-a-chip solutions in the digital baseband process... View full abstract»

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  • Case-based tool for treatment of behavioral problems

    Publication Year: 2001, Page(s):337 - 341
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB) | HTML iconHTML

    In case-based reasoning (CBR) systems, solutions to new problems are found by retrieving and modifying the solutions to similar old problems. Many CBR systems use a two step approach for retrieving a similar past case. This paper describes an enhanced approach, which was developed for a CBR decision support tool for treating behavioral problems in Alzheimer's disease patients. Here, the new case i... View full abstract»

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  • Scatter search for SAT and W-MAX-SAT problems

    Publication Year: 2001, Page(s):105 - 109
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB) | HTML iconHTML

    SAT, the decision version of the satisfiability problem, which consists in verifying that a conjunction of clauses is satisfied by at least one variables interpretation, has been shown to be the first NP-complete satisfiability problem. In this paper, scatter search is used for the first time to solve the problems SAT and weighted maximum SAT (W-MAX-SAT). We present hereafter this approach and the... View full abstract»

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  • Application of the solution to the Rayleigh problem

    Publication Year: 2001, Page(s):401 - 405
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB) | HTML iconHTML

    There are three problems that arise from attempts to characterize the Rayleigh problem that are of interest to computer scientists: characterizing noise distributions that occur in real time scheduling of computer resources, distinguishing between pseudo-random and random signals that occur on networks (the Internet for example) and testing the goodness of random number generators which both occur... View full abstract»

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  • A convenient methodology for efficient translation of C to VHDL

    Publication Year: 2001, Page(s):203 - 207
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB) | HTML iconHTML

    Hardware/software codesign is the cooperative design of hardware and software that maintains hardware and software within the same `stream' of work. One important part of the codesign process is the translation of C code to VHDL. The paper presents a set of transformation algorithms and optimization techniques that help in this process of translation. Also presented in the paper is an example of a... View full abstract»

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  • Hierarchical teleconferencing on the Internet

    Publication Year: 2001, Page(s):319 - 323
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB) | HTML iconHTML

    In this paper, a web-enabled teleconferencing is proposed based on hierarchical management strategy. Client-server paradigm is adopted for the implementation of this collaborative application. The prototype developed is represented by a tree structure with main server as the root and local servers as its nodes. Each node is further fragmented into branches representing the local users, servers, an... View full abstract»

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  • Transform domain/cyclic code shift keying system on an urban multipath channel

    Publication Year: 2001, Page(s):37 - 40
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB) | HTML iconHTML

    This research proposes an application of the transform domain/cyclic code shift keying (TD/CCSK), which is one spread spectrum method. We apply the TD/CCSK system in an urban multipath channel and study the performance of this system. The CCSK system is introduced, and then we propose the model for the urban multipath channel. The performance of the system is based on the bit error rate for all ca... View full abstract»

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  • Meta-reasoning for a distributed agent architecture

    Publication Year: 2001, Page(s):377 - 381
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB) | HTML iconHTML

    Agent based computing offers the ability to decentralize computing solutions by incorporating autonomy and intelligence into cooperating, distributed applications. It provides an effective medium for expressing solutions to problems that involve interaction with real-world environments and allows modelling of the world state and its dynamics. This model can be then used to determine how candidate ... View full abstract»

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  • Analog circuits for self-organizing neural networks based on mutual information

    Publication Year: 2001, Page(s):89 - 94
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB) | HTML iconHTML

    Comparing to conventional neural network structures, this organization greatly reduces the interconnections in neural network by using local interconnection based on statistical analysis, and eliminates the need to store large number of synaptic weights. The network is characterized by evolvable hardware structure and adjustable threshold values based on selection criteria, which use mutual inform... View full abstract»

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  • On the construction of an optimal feedback control law for time-optimal control problem for a two-input three-dimensional nilpotent system

    Publication Year: 2001, Page(s):245 - 249
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB) | HTML iconHTML

    We derive a set of twenty-four basic formulas for computing feedback control steering any given initial state to the origin and use them to construct an optimal feedback control law for the time-optimal control problem for a two-input three-dimensional nilpotent system. The construction of such an optimal feedback control law is carried out without prior knowledge of the partition of the state spa... View full abstract»

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  • Impact of environmental factors on the economic evaluation of renewable energy alternative generation

    Publication Year: 2001, Page(s):123 - 126
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB) | HTML iconHTML

    With the ever growing concern about global warming, environmental pollution, and the rising cost of fossil fuels like oil and coal, there is a greater interest in developing renewable energy sources to meeting growing energy demand. Additionally with the requirement for utilities to provide transmission access to independent power producers (IPP) to deliver their energy wherever needed, and the gr... View full abstract»

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  • Modem protocols for the analog cellular data collection systems

    Publication Year: 2001, Page(s):53 - 57
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB) | HTML iconHTML

    The explosion of wireless technology, especially cellular telephony, has greatly enhanced communication and data transfer over wide geographic areas. Initially, analog technology for the transfer of information (voice/data) had been the driving force. But now, digital technology appears to be the driving force in wireless communication. Although digital technology is growing by leaps and bounds an... View full abstract»

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  • Design of single stator multi-freedom piezoelectric motor device

    Publication Year: 2001, Page(s):151 - 154
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB) | HTML iconHTML

    In this paper, brings forward a new kind of piezoelectric motor device, which can perform 6 directions linear movement in a smooth plate. The motor device is driven by a single frequency electric signal, and the moving direction of the motor device can be controlled by just changing the input electrical signal. The paper first describes the principle of driving the motor. It then describes how to ... View full abstract»

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