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Decomposition of a fuzzy controller based on the inference break-up method

Intelligent Data Analysis 1999年第2期3卷 127-137页

作者： Golob, Marjan Laboratory for Process Automation University of Maribor Faculty of Electrical Engineering and Computer Science Smetanova 17 2000 Maribor Slovenia

A concept called the decomposition of multivariable control rules is presented. Fuzzy control is the application of the compositional rule of inference and it is shown how the inference of the rule base with complex rules can be reduced to the inference of a number of rule bases with simple rules. A fuzzy logic based controller is applied to a simple magnetic suspension system. The controller has proportional, integral and derivative separate parts which are tuned independently. This means that all parts have their own rule bases. By testing it was found that the fuzzy PID controller gives better performance over a typical operational range then a traditional linear PID controller. The magnetic suspension system and the contact-less optical position measurement system have been developed and applied for the comparative analysis of the real-time conventional PID control and the fuzzy control. © 1999 Elsevier science B.V. All rights reserved.

关键词： Fuzzy control

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The influence of class discretization to attribute hierarchy of decision trees

The influence of class discretization to attribute hierarchy...

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15th Congress on Medical Informatics Europe, MIE 1999

作者： Babič, Špela Hleb Kokol, Peter Zorman, Milan Podgorelec, Vili Faculty of Electrical Engineering and Computer Science University of Maribor Laboratory for System Design Smetanova 17 2000 Maribor Slovenia

ISBN: (纸本)0967335515

Decision support systems that help physicians are becoming very important part of medical decision making. They are based on different models and the best of them are providing an explanation together with an accurate, reliable and quick response. One of the most viable among decision-making models is the concept of decision trees, already successfully used for many medical decision making purposes. Although effective and reliable, the traditional decision tree construction approach still contains several deficiencies. Therefore we decided to develop and compare several decision supporting models, each of them built with different discretization of attributes and decision classes. For the construction of decision trees we used MtDeciT, in our laboratory developed tool for building decision trees using the classical induction method. All solutions were evolved for determining the influence of basic properties of child and his/her parents to length of successful breastfeeding. A comparison between developed models and obtained results has shown that the way of discretization obviously plays a great role in the reliable and accurate real-world medical decision making.

关键词： Decision trees

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CArE: A software package for computer-aided nurse education

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Health Informatics Journal 1999年第3期5卷 119-123页

作者： Habjanǐ, A. Kokol, P. Zorman, M. Šlajmer-Japelj, M. The University College of Nursing Studies Maribor Zitna Ulica 15 2000 Slovenia Faculty of Electrical Engineering and Computer Science Laboratory for System Design Maribor Smetanova 17 2000 Slovenia

computer-managed instruction (CMI) has been used in nursing education since the late 1960s. It is because of its accessibility and self-paced format that CMI is very well suited both to students and practising nurses, as learning can take place at the learner's own pace and in his or her own time. In addition CMI also supports continuing education and distant learning. The aim of this paper is to present CArE - a software package for computer Aided Nurse Education and in particular, for teaching the basics of the nursing care process. This package has been developed as a result of the Phare TEMPUS project called NICE (Nursing Informatics and computer Aided Education) [14] [15].

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CALKAS: A computer Architecture Learning and Knowledge Assessment System 5

CALKAS: A Computer Architecture Learning and Knowledge Asses...

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5th Annual Workshop on computer Architecture Education, WCAE 1999

作者： Djordjevic, Jovan Milenkovic, Aleksandar Todorovic, Ivan Marinov, Darko Faculty of Electrical Engineering University of Belgrade P.O.Box 3554 Belgrade11120 Serbia Massachusetts Institute of Technology Laboratory for Computer Science 545 Technology Square #619a CambridgeMA02139 United States

ISBN: (纸本)9781450347419

The paper presents a computer Architecture Learning and Knowledge Assessment System named the CALKAS. It is a software tool aimed to be used for teaching computer architecture and organization. It offers the knowledge assessment and self-learning facilities. The knowledge assessment facilities are meant to be used in laboratory for the lab test and at home for the self-test. The self-learning facilities are meant to be used at home in the process of preparation for the work in the laboratory and for the exam. The CALKAS is developed as a WWW application. © 1999, Association for Computing Machinery, Inc. All rights reserved.

关键词： computer architecture

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Near field distributions in radial line slot antennas for surface wave coupled plasma generation

Near field distributions in radial line slot antennas for su...

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Antennas and Propagation Society International Symposium

作者： T. Yamamoto H. Ono M. Ando N. Goto N. Ishii Department of Electrical Engineering and Computer Science Faculty of Engineering Yamagata University Yonezawa Yamagata Japan Department of Electrical and Electronic Engineering Tokyo Institute of Tech. Meguro Tokyo Japan Department of Electronics and Systems Faculty of Engineering Takushoku University Hachioji Tokyo Japan Central Research Laboratory Tokyo Electron Limited Nirasaki Yamanashi Japan

The near field distributions in radial line slot antennas (RLSA) for surface wave coupled plasma (SWP) are examined. The RLSA are suitable for uniform, high density and large-area plasma generation. In order to realize higher productivity, quick evacuation of reaction gas a narrow gap process space is highly required. Since a wafer is placed close to the antenna aperture in this case, the evaluation of the electromagnetic near-fields in the RLSA for the plasma process is effective and indispensable. Plasma distribution control by changing the slot pattern is also possible based upon the information of the near field distributions. A novel slot pattern, which has many transverse slots, is fabricated and tested. The exponential attenuation of the fields in the boresight direction is measured and the interesting and remarkable characteristics of the novel RLSA for SWP process are confirmed.

关键词： Slot antennas Plasma density Plasma measurements Plasma waves Surface waves Couplings Productivity Aperture antennas Plasma properties Testing

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Healthcare Informatics Society of Ireland

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Irish Journal of Medical science 1999年第4期168卷 276-282页

作者： Rigby, M. Sheridan, A. Draper, R. Stephens, G. Gaffney, P. Grimson, J. Avalos, G. Comerford, F. R. Kanagaratnam, B. Dineen, B. Hamilton, I. Jung, B. Felton, E. Berry, D. Grimson, W. Rice, D. H. Healy, M. Bruce, A. Kelly, J. Carroll, T. Grogan, A. Hurl, G. A. Hyland, D. Roberts, J. Brazil, J. Callanan, I. Devitt, A. O’Brien, T. O’Sullivan, U. M. Peyton, K. Wilson, M. J. Collins, R. Crawley, L. Foley, D. Strachan, H. McBrearty, P. Murnane, R. Murphy, E. Keane, V. Mulvany, F. Sweeney, P. D. Kenny, D. O’Connell, P. R. Balfe, P. Minogue, G. Centre for Health Planning & Management Keele University Keele Staffordshire Britain St. John of God Hospital Stillorgan Hospitaller Order of St. John of God Stillorgan Dept. of Computer Science Trinity College Dublin Clinical Chemistry Laboratory Tallaght Hospital Tallaght Dublin 24 Department of Experimental Medicine Faculty of Medicine National University of Ireland Galway Department of Health Promotion Faculty of Medicine National University of Ireland Galway School of Control Systems & Electrical Engineering Dublin Institute of Technology Ireland Shared Medical Systems Malvern USA Healy Services Dublin Universal Learning Systems Ltd. Dublin The Rotunda Hospital Dublin Mater Misericordiae Hospital Dublin Institute for Healthcare Informatics Dublin First Consulting Group Macclesfield Britain Virus Reference Laboratory UCD Belfield Dublin 4 Cappagh Orthopaedic Hospital Dublin Ireland Southern Health Board Cork Mater Misericordiae Hospital Dublin 7 DSS Dublin Ltd. Ireland University College Dublin Ireland Mary Aikenhead School of Nursing St. Vincent’s Hospital Dublin Blackrock Clinic Dublin Borders Community Health Services NHS Trust Britain James Connolly Memorial Hospital Blanchardstown Dublin 15 Kildare and West Wicklow Mental Health Service for People with A Learning Disability Eastern Health Board Dublin Health Research Board Dublin General Practice Research Unit The Medical Centre Dungloe Dept. of Clinical Biochemistry Our Lady’s Hospital for Sick Children Crumlin Dublin 12

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Analysis of superimposed signals using time-scale phase representation

Analysis of superimposed signals using time-scale phase repr...

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IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis

作者： A. Sostaric D. Zazula System Software Laboratory Faculty of Electrical Engineering and Computer Science University of Maribor Maribor Slovenia

In this paper we address the decomposition problem of electromyographic signals (EMG) and we present a new idea for the decomposition approach introducing the time-scale phase representation. Considering the nature of EMG signals, a special set of nonorthogonal conjugated basis functions is used to perform the time-scale analysis. Mapping the modified signal phase into the time-scale phase plane is applied. Its minimization leads towards a very good time localization of individual superimposed signal components.

关键词： Signal analysis Electromyography Muscles Shape Wavelet analysis Frequency domain analysis System software Laboratories computer science Performance analysis

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Automatic control and adjustment of TV picture geometry

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IFAC Proceedings Volumes 1998年第31期31卷 189-192页

作者： Jože Mohorko Peter Planinšič Žarko Čučej University of Maribor Faculty of Electrical Engineering Computer Science and Information Technology Laboratory for signal processing and remote control 2000 Maribor Smetanova 17 Slovenia

The foundation of computer vision system for testing, controlling and adjusting of the TV sets is a mathematical model of distortion of the TV picture. Adequate accurate model description parameters are given by polynomial of order eight and knowledge based nonlinear, cross coupled relationships between command variables for adjusting of the TV sets and coefficients of polynomial.

关键词： Television Quality control Polynomials Model based control Image recognition Adaptive Bad data identification

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Agents based approach for QoS adaptation in distributed multimedia applications over ATM networks

Agents based approach for QoS adaptation in distributed mult...

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IEEE International Conference on ATM

作者： F. Nait-Abdesselam N. Agoulmine A. Kasiolas Advanced Communication Engineering Center Department of Electrical and Computer Engineering The Faculty of Engineering Science University of Western Ontario London ONT Canada PRiSM Laboratory University of Versailles Versailles France

Multimedia communications have evolved rapidly during the last few years and they now require communication services with guaranteed quality of service (QoS). For the type of these new distributed multimedia applications, it is crucial to monitor continuously the current QoS parameters of a connection to ensure that they comply with the pre-arranged negotiated values. The method proposed in this paper suggests the use of QoS monitoring agents in the ATM switches as well as in the end systems, in a way that allows automatic recovery, if possible, from all the QoS violations. The recovery will be achieved by redistributing the levels of QoS that should be supported immediately by a component to meet the end-to-end requirements. An initial architecture is proposed as well as the communication protocol between the agents and future directions are given.

关键词： Intelligent networks Quality of service Asynchronous transfer mode Switches Multimedia systems Video on demand Application software Pulse width modulation Multimedia communication Streaming media

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Development of a virtual instrument for data acquisition and analysis of the phonocardiogram

Development of a virtual instrument for data acquisition and...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Zhenyu Guo C. Moulder L.-G. Durand M. Loew Department of Electrical Engineering and Computer Science George Washington University Washington D.C. DC USA Laboratory of Biomedical Engineering Clinical Research Institute of Montreal Montreal QUE Canada

A medical virtual instrument has been developed to acquire and analyze the phonocardiogram (PCG), the heart sound and murmur signal. This instrument consists of a Pentium 200 computer running Windows95, equipped with LabVIEW software and a plug-in data acquisition board, and a two-channel custom designed bio-signal preamplifier. The bio-signal preamplifier allows the data acquisition board to acquire both the PCG and the electrocardiogram (ECG). LabVIEW software modules have been developed to create virtual instrument's front panels for the following functions: to manage patient information and data files, to capture and display current ECG and heart sound signals while saving or analyzing previous acquired signals, to perform the spectral and time-frequency analysis of the heart sounds and murmurs, and to review the previous recordings. This instrument can be used to display the PCG and to analyze the individual heart sound and murmur for the detection of heart valve diseases. It can also be used to analyze the carotid bruit for the diagnosis of carotid artery stenosis. This study demonstrated that a LabVIEW-based medical virtual instrument provides a low-cost, reliable, and flexible solution for data acquisition and analysis of the PCG and carotid bruit.

关键词： Instruments Data acquisition Heart Medical diagnostic imaging Signal analysis Preamplifiers Electrocardiography Displays Software performance Health information management

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