Proceedings of the Thirty-Fourth Southeastern Symposium on System Theory (Cat. No.02EX540)

19-19 March 2002

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  • Proceedings of the Thirty-Fourth Southeastern Symposium on System Theory (Cat. No.02EX540)

    Publication Year: 2002
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    Freely Available from IEEE
  • An intelligent control system architecture for the control of patient-ventilator synchrony

    Publication Year: 2002, Page(s):46 - 50
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (421 KB) | HTML iconHTML

    Describes an intelligent control system architecture for the control of patient-ventilator synchrony. The long-term objective of the research is to develop an innovative intelligent system for controlling the process of mechanical ventilatory support for patients undergoing therapy in a hospital intensive care unit (ICU). The initial work focuses on the requirements for a medical-advisory/decision... View full abstract»

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  • Author's index

    Publication Year: 2002, Page(s):491 - 493
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    Freely Available from IEEE
  • A proposal for measuring software productivity in a working environment

    Publication Year: 2002, Page(s):339 - 343
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (529 KB) | HTML iconHTML

    In the software industry one of the most central business factors is programmer productivity. While there is a major advantage in being able to measure and thus manage this most important factor, there is no widely accepted framework to measure software productivity. This document outlines a proposal for a study to attempt to measure software programmer productivity. The document proposes an outli... View full abstract»

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  • Extraction of parallel hardware during C to VHDL translation

    Publication Year: 2002, Page(s):334 - 338
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB) | HTML iconHTML

    Translating C/C++ language into VHDL is an important step in synthesizing hardware from C/C++. However, there is no explicit facility in the general C/C++ language to declare concurrent parallel execution which is a critical characteristic of hardware systems. This paper presents the outline of a set of transformation algorithms. These algorithms are helpful in the process of extracting parallel h... View full abstract»

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  • A simple wide-band frequency independent quadrature phase shifter

    Publication Year: 2002, Page(s):188 - 191
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (374 KB) | HTML iconHTML

    Quadrature phase sensitive detectors (QPSD) are a very important part of phase measuring systems, such as communication receivers. These types of devices are able to measure phase angles between two periodic signals very accurately even in the presence of noise. In the QPSD system, there is a specific block that produces a 90° phase shift for a sinusoidal input signal. Current design approache... View full abstract»

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  • A procedure for designing a translator from C to VHDL

    Publication Year: 2002, Page(s):329 - 333
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB) | HTML iconHTML

    Hardware/software codesign can be defined as the unification of separate hardware and software paths towards the development of a system as a whole. One of the prominent aspects of a codesign process is C to VHDL translation. This paper describes a procedure to design a translator from C to VHDL using transformation algorithms, which facilitate the process of C to VHDL translation. In particular, ... View full abstract»

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  • A non-contact ammeter using phosphor thermometry

    Publication Year: 2002, Page(s):184 - 187
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (355 KB) | HTML iconHTML

    An experiment was conducted to study the feasibility of a remote (noncontact) ammeter based on phosphor thermometry. Elevated surface temperature (due to current) of a small transformer was measured by employing phosphor thermometry. A nearly linear relationship between surface temperature and current indicates potential use for this technique. Some modifications to the technique with the aim of r... View full abstract»

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  • An accelerometer-based physical rehabilitation system

    Publication Year: 2002, Page(s):57 - 60
    Cited by:  Papers (6)  |  Patents (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (625 KB) | HTML iconHTML

    This paper presents a portable physical rehabilitation monitoring system based on a personal network of intelligent sensors. Rehabilitation is traditionally carried out in hospitals under supervision of qualified personnel. However, significantly better results could be achieved using out-of-hospital portable monitoring to allow patients computer-assisted rehabilitation in their homes. The new gen... View full abstract»

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  • Application of data driven models in quantum mechanics calculations

    Publication Year: 2002, Page(s):426 - 430
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (449 KB) | HTML iconHTML

    Minimization of the total potential energy of a system of interacting atoms is a classical challenging problem in physics. Standard quantum mechanics calculation of the total potential energy is a very time consuming task. The article reports preliminary results of our new investigation of using data driven models as a means of approximating the total system energy. Such models include feedforward... View full abstract»

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  • The exact calculation of real stability radii of systems with affine parametric uncertainties

    Publication Year: 2002, Page(s):279 - 286
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (702 KB) | HTML iconHTML

    By transforming the affine parametric uncertain system problem into a linear feasibility problem, a new and simple approach to the problem of finding robust stability margins for SISO systems with real affine parametric uncertainties is proposed. The approach recovers previous results using real-p analysis given in the literature. A comprehensive example shows that these approaches are equivalent ... View full abstract»

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  • Survey of branch prediction schemes for pipelined processors

    Publication Year: 2002, Page(s):324 - 328
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB) | HTML iconHTML

    Branch prediction schemes have become an integral part of today's pipelined processors. They are one of the key issues in enhancing the performance of pipelined processors. Pipeline stalls due to conditional branches are one of the most significant impediments to realizing the performance potential of deeply pipelined and superscalar processors. Many schemes for branch prediction, that can effecti... View full abstract»

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  • Genetic algorithms-based parameter optimization of a non-destructive damage detection method

    Publication Year: 2002, Page(s):152 - 156
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (457 KB) | HTML iconHTML

    The method of strain energy mode shapes allows the determination of changes in structural integrity from changes in the vibrational response of a structure. The modified method presented does not require knowledge of the undamaged state of the structure. Genetic algorithms (GA) are applied to produce a sufficiently optimized amplitude characteristic of a filter used to extract damage information f... View full abstract»

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  • Discrete wavelet transform domain adaptive decision feedback equalization

    Publication Year: 2002, Page(s):243 - 247
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB) | HTML iconHTML

    In this paper we apply discrete wavelet transform processing to the decision feedback equalization adaptation problem. In particular, the discrete wavelet transform decision feedback equalizer (DFE) performance and complexity are compared to those of the least mean squares (LMS) and recursive least squares (RLS) algorithms. We illustrate, using a simulation example, that the wavelet transform DFE ... View full abstract»

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  • Handel-C for rapid prototyping of VLSI coprocessors for real time systems

    Publication Year: 2002, Page(s):6 - 10
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (668 KB) | HTML iconHTML

    The current maturity of modern reconfigurable hardware elements such as field programable gate arrays now makes it possible to utilize application-specific reconfigurable coprocessor logic as part of real time system design. Such logic has great potential to improve both the level of performance and run time determinism of the system. It also gives the real time system designer the capability of p... View full abstract»

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  • Tree annealing for constrained optimization

    Publication Year: 2002, Page(s):412 - 416
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (461 KB) | HTML iconHTML

    In this article, we introduce an optimization algorithm that integrates the basic idea of simulated annealing and partitioning of the search domain by binary tree of subdomains. Also included in the algorithm are procedures that implement direct simple constraints on the decision variables. The algorithm can be used to solve various optimization problems arising from parameter identification, neur... View full abstract»

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  • Multifunction oscillographic display with dot-matrix displays

    Publication Year: 2002, Page(s):266 - 270
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (395 KB) | HTML iconHTML

    The design and development of a multipurpose display system employing dot-matrix panel is reported. The system displays oscillographic waveforms such as musical audio along with the display of programmed characters in slotted windows. The display system has the following features. 1. Single channel oscillographic display. 2. Storage oscilloscope functions. 3. Dual channel oscillographic display. 4... View full abstract»

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  • Steering controller design using scale-model vehicles

    Publication Year: 2002, Page(s):476 - 478
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (291 KB) | HTML iconHTML

    A scale-model, experimental apparatus is developed to design and evaluate steering controller designs. The controller is designed using linear quadratic optimal control methods on a standard four-state vehicle model. The apparatus simulates the human driver using a scale-model vehicle, a treadmill, and a vision system. View full abstract»

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  • A data compression scheme employing a biologically inspired model

    Publication Year: 2002, Page(s):391 - 395
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (491 KB) | HTML iconHTML

    The traditional model in biology for the mode of communication between neurons revolves around the integrate-and-fire model. In this model a neuron will fire only if the amount of incoming signal within a certain amount of time meets or exceeds some threshold (i.e., the incoming signal is integrated). Recent work by Izhikevich (2001) has posed another possible model, which he calls the "resonate-a... View full abstract»

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  • Analysis, simulation and testing of the σ-CLL current-source resonant inverter

    Publication Year: 2002, Page(s):179 - 183
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (362 KB) | HTML iconHTML

    High-frequency resonant power converters are an attractive choice for high power density applications. Until recently, only resonant converters with 2 energy-storage elements have been studied and used for applications. However, some of the drawbacks of this class of converters (including poor load regulation, discontinuous mode operation and poor transient response) can be overcome by the judicio... View full abstract»

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  • Testing the telephone routing over Internet protocol on soft switches

    Publication Year: 2002, Page(s):123 - 127
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (474 KB) | HTML iconHTML

    The telephone routing over Internet protocol (TRIP) will be employed in the future voice over Internet protocol (VoIP) networks to solve the problem of gateway location. This paper describes the technical implementation of TRIP on soft switches and explains the process of testing the solution. This testing is currently underway at the UAB Center for Telecommunications Education and Research. View full abstract»

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  • Intelligent control of cupola furnaces

    Publication Year: 2002, Page(s):435 - 439
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB) | HTML iconHTML

    The objective of this research is to improve the efficiency of the cupola operation in the presence of desired output changes. This is achieved by developing an automatic controller for the cupola furnace. A controller was previously developed that provided tight control over the output parameters of the cupola under little or no desired change. The controller considers physical and practical limi... View full abstract»

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  • An intelligent telemedicine system for remote spirometric monitoring

    Publication Year: 2002, Page(s):53 - 56
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (462 KB) | HTML iconHTML

    An intelligent telemedicine system for remote monitoring of lung function is described. Parameters useful in assessing lung function are measured using a home spirometer and are transmitted over a telephone line to a database residing on an institutional computer system. A patient's spirometric measurement data is periodically screened automatically to detect changes and trends that may indicate l... View full abstract»

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  • A dynamic power profiling of embedded computer systems

    Publication Year: 2002, Page(s):15 - 19
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (554 KB) | HTML iconHTML

    Power consumption is one of the most critical system design parameters, particularly in the case of battery powered computer systems. This paper presents a novel method of data acquisition and processing suited for the dynamic power estimation of computer systems. It is the goal of the designer of these systems to maximize the useful system operation time with a fixed battery charge. In order to a... View full abstract»

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  • Partial binary decision diagrams

    Publication Year: 2002, Page(s):422 - 425
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (345 KB) | HTML iconHTML

    Decision diagrams provide compact representations for discrete functions. There are some functions for which binary decision diagrams reach exponential size. Presented here is a method of representing Boolean functions as multiple partial decision diagrams. View full abstract»

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