Pub Date : 1994-04-10DOI: 10.1109/SECON.1994.324323
W. A. Greene
Our work is in machine learning, a subfield of artificial intelligence. We describe a variant of Quinlan's ID3 algorithm (1986) which is attuned to the situation that every feature's value-set is linearly ordered and finite. We then seek economical training sets, that is, ones which are small in size but result in learned decision trees of high accuracy. Our search focuses on geometric properties of the target concept, such as its extreme points, edges, faces, and surface. We categorize all concepts into three classes, from simplest to most general, and for each class we identify certain training sets, some quite small, others less so, which result in highly accurate learning of the concepts in that class. Some of our results are rigorously provable (but the proofs do not appear here), for other results our evidence is empirical.<>
{"title":"Economical training sets for linear ID3 learning","authors":"W. A. Greene","doi":"10.1109/SECON.1994.324323","DOIUrl":"https://doi.org/10.1109/SECON.1994.324323","url":null,"abstract":"Our work is in machine learning, a subfield of artificial intelligence. We describe a variant of Quinlan's ID3 algorithm (1986) which is attuned to the situation that every feature's value-set is linearly ordered and finite. We then seek economical training sets, that is, ones which are small in size but result in learned decision trees of high accuracy. Our search focuses on geometric properties of the target concept, such as its extreme points, edges, faces, and surface. We categorize all concepts into three classes, from simplest to most general, and for each class we identify certain training sets, some quite small, others less so, which result in highly accurate learning of the concepts in that class. Some of our results are rigorously provable (but the proofs do not appear here), for other results our evidence is empirical.<<ETX>>","PeriodicalId":119615,"journal":{"name":"Proceedings of SOUTHEASTCON '94","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117297084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1994-04-10DOI: 10.1109/SECON.1994.324277
F.G. Pavuza, G. Beszedics, W. Toriser, M. Wawra, W. Winkler
The paper introduces the basic design goals, the guidelines for the development and the practical test results of a versatile, powerful, highly efficient and energy saving electronic drive, consisting of an optimized electric disk-motor and an electronic control circuit. The implementation in two prototypes-a single engine bicycle and a twin engine wheelchair-is discussed.<>
{"title":"An improved electronic drive for small two and four wheel vehicles","authors":"F.G. Pavuza, G. Beszedics, W. Toriser, M. Wawra, W. Winkler","doi":"10.1109/SECON.1994.324277","DOIUrl":"https://doi.org/10.1109/SECON.1994.324277","url":null,"abstract":"The paper introduces the basic design goals, the guidelines for the development and the practical test results of a versatile, powerful, highly efficient and energy saving electronic drive, consisting of an optimized electric disk-motor and an electronic control circuit. The implementation in two prototypes-a single engine bicycle and a twin engine wheelchair-is discussed.<<ETX>>","PeriodicalId":119615,"journal":{"name":"Proceedings of SOUTHEASTCON '94","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123610592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1994-04-10DOI: 10.1109/SECON.1994.324348
A. Barreto, J. Príncipe, S. Reid
A system for the intraoperative localization of the focus of epilepsy from array electrocorticography is presented. The spatio-temporal structure that characterizes the surface potential field during the occurrence of focal interictal events is discussed. The spatio-temporal Laplacian transformation is proposed for selectively emphasizing these occurrences. The implementation of the online localization system in a multiprocessor platform is outlined and detailed results from three surgery cases are shown.<>
{"title":"An on-line system for intraoperative focus localization from array electrocorticography","authors":"A. Barreto, J. Príncipe, S. Reid","doi":"10.1109/SECON.1994.324348","DOIUrl":"https://doi.org/10.1109/SECON.1994.324348","url":null,"abstract":"A system for the intraoperative localization of the focus of epilepsy from array electrocorticography is presented. The spatio-temporal structure that characterizes the surface potential field during the occurrence of focal interictal events is discussed. The spatio-temporal Laplacian transformation is proposed for selectively emphasizing these occurrences. The implementation of the online localization system in a multiprocessor platform is outlined and detailed results from three surgery cases are shown.<<ETX>>","PeriodicalId":119615,"journal":{"name":"Proceedings of SOUTHEASTCON '94","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125555691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1994-04-10DOI: 10.1109/SECON.1994.324303
M. Toro, A. Samra, S. Sim
The basic responsibility of the electric utility industry is to supply reliable, efficient and economical electric service to the customer. However, meeting these responsibilities has become increasingly complex because of the new technical, economical, environmental, political, and social considerations. The effect of these considerations/constraints has increased the uncertainty in the planning process and raised operating and capital costs. Therefore, utilities have sought means to control the rate of peak load, improve the efficiency/utilization of present electric energy systems and to reduce requirements for additional generation, transmission, and distribution investments. These methods form the set of functions known as load management. In this paper, application of the residential load management program of Florida Power and Light (FPL) is discussed. The load management program in South Florida is evaluated from both the utility and customer's perspectives. This includes establishment of a residential load management program, utility cost and benefits of the program, customer acceptance, and system configuration.<>
{"title":"Evaluation of load management program in South Florida","authors":"M. Toro, A. Samra, S. Sim","doi":"10.1109/SECON.1994.324303","DOIUrl":"https://doi.org/10.1109/SECON.1994.324303","url":null,"abstract":"The basic responsibility of the electric utility industry is to supply reliable, efficient and economical electric service to the customer. However, meeting these responsibilities has become increasingly complex because of the new technical, economical, environmental, political, and social considerations. The effect of these considerations/constraints has increased the uncertainty in the planning process and raised operating and capital costs. Therefore, utilities have sought means to control the rate of peak load, improve the efficiency/utilization of present electric energy systems and to reduce requirements for additional generation, transmission, and distribution investments. These methods form the set of functions known as load management. In this paper, application of the residential load management program of Florida Power and Light (FPL) is discussed. The load management program in South Florida is evaluated from both the utility and customer's perspectives. This includes establishment of a residential load management program, utility cost and benefits of the program, customer acceptance, and system configuration.<<ETX>>","PeriodicalId":119615,"journal":{"name":"Proceedings of SOUTHEASTCON '94","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120956300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1994-04-10DOI: 10.1109/SECON.1994.324308
W. Dotson
A difficulty with network reliability algorithms is failure to complete on problems of practical size. Hence algorithms which give improved convergence on upper and lower bounds for the reliability midway through the problem are desirable. This paper introduces a previously unreported idea for partitioning in network reliability algorithms and compares experimental results on convergence rates of the reliability bounds using several strategies. The results indicate that as much as an order of magnitude difference in convergence rates exist between best and worst strategies midway through the problem.<>
{"title":"Effects of partitioning strategies on network reliability bounds","authors":"W. Dotson","doi":"10.1109/SECON.1994.324308","DOIUrl":"https://doi.org/10.1109/SECON.1994.324308","url":null,"abstract":"A difficulty with network reliability algorithms is failure to complete on problems of practical size. Hence algorithms which give improved convergence on upper and lower bounds for the reliability midway through the problem are desirable. This paper introduces a previously unreported idea for partitioning in network reliability algorithms and compares experimental results on convergence rates of the reliability bounds using several strategies. The results indicate that as much as an order of magnitude difference in convergence rates exist between best and worst strategies midway through the problem.<<ETX>>","PeriodicalId":119615,"journal":{"name":"Proceedings of SOUTHEASTCON '94","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117211273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1994-04-10DOI: 10.1109/SECON.1994.324253
W. P. Wheless, L. Wurtz, J.A. Well
The utility of pyroelectric detectors at infrared and visible light frequencies is common knowledge. However, it is not well known that pulsed or otherwise amplitude modulated microwave radiation also can be detected with pyroelectric materials. Devices which can sense the presence of such modulated fields are practical for frequencies above approximately 0.5 GHz. An equivalent-circuit model for prediction of the fundamental performance characteristics of a pyroelectric detector, applicable to microwave (above 0.5 GHz) frequencies, is discussed here.<>
{"title":"An equivalent-circuit radiation sensor model","authors":"W. P. Wheless, L. Wurtz, J.A. Well","doi":"10.1109/SECON.1994.324253","DOIUrl":"https://doi.org/10.1109/SECON.1994.324253","url":null,"abstract":"The utility of pyroelectric detectors at infrared and visible light frequencies is common knowledge. However, it is not well known that pulsed or otherwise amplitude modulated microwave radiation also can be detected with pyroelectric materials. Devices which can sense the presence of such modulated fields are practical for frequencies above approximately 0.5 GHz. An equivalent-circuit model for prediction of the fundamental performance characteristics of a pyroelectric detector, applicable to microwave (above 0.5 GHz) frequencies, is discussed here.<<ETX>>","PeriodicalId":119615,"journal":{"name":"Proceedings of SOUTHEASTCON '94","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115819904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1994-04-10DOI: 10.1109/SECON.1994.324352
J.G. McLean
Design robustness assessment (DRA) is a technique for quantifying the design robustness of electronics-based products through empirical testing. The DRA technique was developed and refined within IBM, and has been applied during the development phase of most IBM Personal System/2 products, including systems, options and peripherals. DRA has proven to be an effective technique for finding latent design problems and pinpointing areas that would benefit from application of robust design techniques. This paper provides a brief explanation of the DRA test process and explores the relationship between DRA results and design robustness.<>
{"title":"Design robustness assessment-a technical overview","authors":"J.G. McLean","doi":"10.1109/SECON.1994.324352","DOIUrl":"https://doi.org/10.1109/SECON.1994.324352","url":null,"abstract":"Design robustness assessment (DRA) is a technique for quantifying the design robustness of electronics-based products through empirical testing. The DRA technique was developed and refined within IBM, and has been applied during the development phase of most IBM Personal System/2 products, including systems, options and peripherals. DRA has proven to be an effective technique for finding latent design problems and pinpointing areas that would benefit from application of robust design techniques. This paper provides a brief explanation of the DRA test process and explores the relationship between DRA results and design robustness.<<ETX>>","PeriodicalId":119615,"journal":{"name":"Proceedings of SOUTHEASTCON '94","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123795829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1994-04-10DOI: 10.1109/SECON.1994.324299
G.T.S. Pessoa, M. Hagmann
The definition of the curl operator in terms of an integral is shown to lead to a method for numerical solutions. In the paper, the derivation of this method, as well as examples for waveguides are presented.<>
旋度算子在积分中的定义，引出了一种数值解的方法。文中给出了该方法的推导过程，并给出了波导的算例。
{"title":"Solution of the waveguide problem by a method based on the integral definition of the curl operator","authors":"G.T.S. Pessoa, M. Hagmann","doi":"10.1109/SECON.1994.324299","DOIUrl":"https://doi.org/10.1109/SECON.1994.324299","url":null,"abstract":"The definition of the curl operator in terms of an integral is shown to lead to a method for numerical solutions. In the paper, the derivation of this method, as well as examples for waveguides are presented.<<ETX>>","PeriodicalId":119615,"journal":{"name":"Proceedings of SOUTHEASTCON '94","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124155357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1994-04-10DOI: 10.1109/SECON.1994.324313
A. Elsherbeni, C. Taylor
An educational software package (APV) is developed for the analysis and design for different types of antenna and antenna arrays. The software is interactive and provides three and two dimensional views for the computed far field patterns. Different plane cuts, in the three dimensional representation are immediately accessible after generating the far field pattern. The two dimensional patterns can be displayed in rectangular or polar format with relative or dB scales. Other relevant antenna parameters such as input impedance, radiation resistance and power, and directivity are also computed and displayed for user information. The APV software runs on IBM or compatible personal computers.<>
{"title":"Visualization of two and three dimensional antenna patterns","authors":"A. Elsherbeni, C. Taylor","doi":"10.1109/SECON.1994.324313","DOIUrl":"https://doi.org/10.1109/SECON.1994.324313","url":null,"abstract":"An educational software package (APV) is developed for the analysis and design for different types of antenna and antenna arrays. The software is interactive and provides three and two dimensional views for the computed far field patterns. Different plane cuts, in the three dimensional representation are immediately accessible after generating the far field pattern. The two dimensional patterns can be displayed in rectangular or polar format with relative or dB scales. Other relevant antenna parameters such as input impedance, radiation resistance and power, and directivity are also computed and displayed for user information. The APV software runs on IBM or compatible personal computers.<<ETX>>","PeriodicalId":119615,"journal":{"name":"Proceedings of SOUTHEASTCON '94","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126521276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1994-04-10DOI: 10.1109/SECON.1994.324347
P. Pillay, J. Schilleci
The drives industry is steadily moving towards digital implementation of controllers for variable speed drives. This paper discusses the implementation of a DSP controller for controlling a permanent magnet synchronous motor (PMSM). It discusses the theory of operation of a PMSM drive and shows how a DSP controller has been designed to perform the vector and current control functions. The design criteria is presented and advantages and disadvantages of the DSP selected to perform the vector and current control functions is discussed. The techniques used in software development are also discussed.<>
{"title":"DSP controller for a permanent magnet synchronous motor drive","authors":"P. Pillay, J. Schilleci","doi":"10.1109/SECON.1994.324347","DOIUrl":"https://doi.org/10.1109/SECON.1994.324347","url":null,"abstract":"The drives industry is steadily moving towards digital implementation of controllers for variable speed drives. This paper discusses the implementation of a DSP controller for controlling a permanent magnet synchronous motor (PMSM). It discusses the theory of operation of a PMSM drive and shows how a DSP controller has been designed to perform the vector and current control functions. The design criteria is presented and advantages and disadvantages of the DSP selected to perform the vector and current control functions is discussed. The techniques used in software development are also discussed.<<ETX>>","PeriodicalId":119615,"journal":{"name":"Proceedings of SOUTHEASTCON '94","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125839598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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