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Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208)最新文献

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Coupled magnetoelastic finite element formulation of anisotropic magnetostatic problems 各向异性静磁问题的耦合磁弹性有限元公式
Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208) Pub Date : 2001-03-30 DOI: 10.1109/SECON.2001.923113
O. Mohammed
{"title":"Coupled magnetoelastic finite element formulation of anisotropic magnetostatic problems","authors":"O. Mohammed","doi":"10.1109/SECON.2001.923113","DOIUrl":"https://doi.org/10.1109/SECON.2001.923113","url":null,"abstract":"This paper presents a generalized 2-D tensor finite element model, which can be used to evaluate force components in electromagnetic devices including those due to the magnetostrictive phenomenon. Magnetostriction is a property of ferrous alloys in which the material will exhibit strain in the presence of a magnetic field. This strain is in addition to any other strains that might exist as a result of electrical and for mechanical forces in a given application. At low frequencies, magnetostrictive forces are undesirable. They can be large and generate acoustic noise in electromagnetic systems, which can be undesirable in some applications. Implementation results on a 2-hp, permanent magnet motor indicate that magnetostrictive forces are significant and amount to more than 50% force level increase above electromechanical force levels obtained without accounting for magnetostriction.","PeriodicalId":368157,"journal":{"name":"Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129068887","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}
引用次数: 3
Modeling speech-interfering noise with applied chaos theory 应用混沌理论建模语音干扰噪声
Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208) Pub Date : 2001-03-30 DOI: 10.1109/SECON.2001.923120
E. Patterson, J. Gowdy
{"title":"Modeling speech-interfering noise with applied chaos theory","authors":"E. Patterson, J. Gowdy","doi":"10.1109/SECON.2001.923120","DOIUrl":"https://doi.org/10.1109/SECON.2001.923120","url":null,"abstract":"One of the primary difficulties involved with speech recognition is dealing with sounds other than speech that may occur while a person is speaking. There have been many techniques that attempt to deal with background \"noise.\" Many of these make use of some type of stochastic model to decrease the effect of the interfering signal. This paper, however, investigates the possibility of a new technique involving nonlinear chaos theory. The idea of chaos has been of growing interest in physics and has begun to enter the world of signal processing with some good results. In a simple sense, a chaotic signal is one that appears random but has some underlying, nearly deterministic structure. This paper considers using some of the knowledge from chaos theory in modeling background \"noise\" that may interfere with a recognizer or other speech system.","PeriodicalId":368157,"journal":{"name":"Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128424175","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}
引用次数: 1
Accurate FDTD simulation of biological tissues for bioelectromagnetic applications 生物电磁应用中生物组织的精确时域有限差分模拟
Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208) Pub Date : 2001-03-30 DOI: 10.1109/SECON.2001.923110
M. Eleiwa, A. Elsherbeni
{"title":"Accurate FDTD simulation of biological tissues for bioelectromagnetic applications","authors":"M. Eleiwa, A. Elsherbeni","doi":"10.1109/SECON.2001.923110","DOIUrl":"https://doi.org/10.1109/SECON.2001.923110","url":null,"abstract":"For practical bio-electromagnetic applications, such as the interaction of electromagnetic fields with the human head and body, accurate simulation of biological tissues is a key factor for reliable results. The characteristics of biological tissues are frequency dependent and thus called dispersive materials. For accurate FDTD simulation of biological tissues, a numerical technique is proposed to derive the Debye coefficients from the measured frequency-dependent permittivity of different biological tissues, and then a scattered field FDTD formulation is developed for such dispersive media characterized by multi-term Debye expressions. The proposed scattered field FDTD formulation is valid for three dimensional analysis of practical EM problems involving combination of dispersive and non-dispersive materials. The developed procedure has been verified for different types of biological tissues over a very wide band of frequency (from 30 Hz to 20 GHz). The reflection coefficients of a semi-infinite dispersive medium using one, two, and three-term Debye expressions are computed and compared favorably with the corresponding analytical solution. Hence, the accuracy and stability of modeling multi-term Debye dispersive materials using the proposed scattered FDTD formulation is assessed.","PeriodicalId":368157,"journal":{"name":"Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128841076","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}
引用次数: 7
Boundary expansion of expert systems: incorporating evolutionary computation with intrusion detection solutions 专家系统的边界扩展:结合演化计算与入侵检测解决方案
Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208) Pub Date : 2001-03-30 DOI: 10.1109/SECON.2001.923095
R.C. Garcia, J. Cannady
{"title":"Boundary expansion of expert systems: incorporating evolutionary computation with intrusion detection solutions","authors":"R.C. Garcia, J. Cannady","doi":"10.1109/SECON.2001.923095","DOIUrl":"https://doi.org/10.1109/SECON.2001.923095","url":null,"abstract":"The work represented here utilizes evolutionary computation to improve intrusion detection techniques. Many intrusion detection techniques incorporate expert systems (e.g., ASAX, IDES, NIDES, DIDS, Hyperview, JiNao). Problems associated with expert systems are in how the rules are defined and matched against potential intruders. Going outside the rule set leaves minimal hope of detection. This work improves upon intrusion detection schemes that utilized expert systems by using an evolution strategy with combinations of attack signatures as individual characteristics. The overall strength is in viewing the rule-matching problem as an optimization problem.","PeriodicalId":368157,"journal":{"name":"Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208)","volume":"330 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134070349","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}
引用次数: 9
Modeling and analyzing the vocal tract under normal and stressful talking conditions 模拟和分析在正常和紧张的谈话条件下的声道
Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208) Pub Date : 2001-03-30 DOI: 10.1109/SECON.2001.923118
I. Shahin, N. Botros
{"title":"Modeling and analyzing the vocal tract under normal and stressful talking conditions","authors":"I. Shahin, N. Botros","doi":"10.1109/SECON.2001.923118","DOIUrl":"https://doi.org/10.1109/SECON.2001.923118","url":null,"abstract":"In this research, we model and analyze the vocal tract under normal and stressful talking conditions. This research answers the question of the degradation in the recognition performance of text-dependent speaker identification under stressful talking conditions. This research can be used (for future research) to improve the recognition performance under stressful talking conditions.","PeriodicalId":368157,"journal":{"name":"Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130557949","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}
引用次数: 4
Development of Internet and Web based tele training methodologies 基于Internet和Web的远程培训方法的开发
Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208) Pub Date : 2001-03-30 DOI: 10.1109/SECON.2001.923124
S. Wunnava, K. Tummala
{"title":"Development of Internet and Web based tele training methodologies","authors":"S. Wunnava, K. Tummala","doi":"10.1109/SECON.2001.923124","DOIUrl":"https://doi.org/10.1109/SECON.2001.923124","url":null,"abstract":"The majority of educational institutions and industrial organizations are using online methodologies for inter communications and information transfers. In the modern and technology driven global environment, it has become very important for professionals to continuously retrain themselves in new breakthroughs and technical advancements. In the present times, there is an explosion of multimedia transfers involving audio, video, and data for applications on the Internet and World Wide Web such as: distance learning, interactive messaging, virtual design center implementations, etc. In this article, the authors present the general concepts of tele training, information transfer methodologies and some sample training modules such as C, Java, JavaScript, Matlab and similar engineering modules.","PeriodicalId":368157,"journal":{"name":"Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116640280","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}
引用次数: 0
Multi-input square iterative learning control with bounded inputs 有界输入的多输入平方迭代学习控制
Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208) Pub Date : 2000-11-01 DOI: 10.1109/SECON.2001.923088
Brian J. Driessen, N. Sadegh, K. S. Kwok
{"title":"Multi-input square iterative learning control with bounded inputs","authors":"Brian J. Driessen, N. Sadegh, K. S. Kwok","doi":"10.1109/SECON.2001.923088","DOIUrl":"https://doi.org/10.1109/SECON.2001.923088","url":null,"abstract":"Presents a very simple modification of the iterative learning control algorithm of Arimoto et al. (1984)] to the case where the inputs are bounded. The Jacobian condition presented in Avrachenkov (1998) is specified instead of the usual condition specified by Arimoto et al. In particular, the former is a condition for monotonicity in the distance to the solution instead of monotonicity in the output error. This observation allows for a simple extension of the methods of Arimoto et al. to the case of bounded inputs since the process of moving an input back to a bound if it exceeds it does not affect the contraction mapping property; in fact, the distance to the solution, if anything, can only decrease even further. The usual Jacobian error condition, on the other hand, is not sufficient to guarantee the chopping rule will converge to the solution, as proved herein.","PeriodicalId":368157,"journal":{"name":"Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125933762","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}
引用次数: 5
A scalable subband audio coding scheme for ATM environments 用于ATM环境的可扩展子带音频编码方案
Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208) Pub Date : 1900-01-01 DOI: 10.1109/SECON.2001.923128
W. Jin, M. Scordilis
{"title":"A scalable subband audio coding scheme for ATM environments","authors":"W. Jin, M. Scordilis","doi":"10.1109/SECON.2001.923128","DOIUrl":"https://doi.org/10.1109/SECON.2001.923128","url":null,"abstract":"A scalable audio coder is proposed for maintaining uninterrupted service in dynamically changing ATM network environments. Performance requirements include seamless switching between bit rates, which would gracefully vary the perceived signal quality. The encoder is similar to the MPEG-1 Layer 3 (MP3) standard but differs significantly in that the MDCT coefficients are quantized in a layered manner. Four enhancement layers that progressively address residual quantization errors follow a perceptually optimized core layer with somewhat poor quantization resolution. Each layer generates its own independently decodable bit stream. Core layer bits appended with enhancement bits are packed into one frame. Signal quality gracefully varies from basic to transparent with the corresponding bit rates of 8, 16, 32, 64, and 128 kb/s at each layer. Subjective tests indicate that our codec performs equivalently to MP3 at 128 kb/s with a somewhat inferior performance at lower bit rates.","PeriodicalId":368157,"journal":{"name":"Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124214436","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}
引用次数: 2
Hardware implementation of a real-time electromagnetic field analysis system for engineering education 一个用于工程教育的实时电磁场分析系统的硬件实现
Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208) Pub Date : 1900-01-01 DOI: 10.1109/SECON.2001.923125
O. Mohammed, J. Castro, G. Roig
{"title":"Hardware implementation of a real-time electromagnetic field analysis system for engineering education","authors":"O. Mohammed, J. Castro, G. Roig","doi":"10.1109/SECON.2001.923125","DOIUrl":"https://doi.org/10.1109/SECON.2001.923125","url":null,"abstract":"In this paper, the authors implement a real-time electromagnetic field analysis system for an energy conversion laboratory. The work has been oriented to two specific directions. The first is continuing the development of the software, through the conversion of an existing program to match the newly acquired National Instruments package (FE software, ActiveX controls, and data acquisition hardware) keeping the same display format. The second is to manufacture and supply all the necessary hardware required to carry on satisfactorily the experiments and communicate with the computer.","PeriodicalId":368157,"journal":{"name":"Proceedings. IEEE SoutheastCon 2001 (Cat. No.01CH37208)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114020438","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}
引用次数: 0
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