{"title":"Component-based distributed network management","authors":"C. Jeong, M. M. Shahsavari","doi":"10.1109/SECON.2000.845612","DOIUrl":"https://doi.org/10.1109/SECON.2000.845612","url":null,"abstract":"Computer networks such as the Internet, intranets, and extranet are becoming the lifeline of business, entertainment, education and government information dissemination. The growth of networks in size, heterogeneity, functionality and the demand for its high availability require an efficient, scalable, dynamic network management model. Prevalent centralized network management has failed to meet the challenges of today's networks for several years. The flexible, scalable, and dynamic management architecture is inevitable for the next generation of network management. This paper addresses the above issues through components-based distributed management paradigm that provides optimal solutions (e.g., reusability, scalability, and flexibility) through dynamic plug-and-play of management components. The component approach complements dynamic and client/server-based management through a well-defined component architecture.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126956203","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}
{"title":"Using low Earth orbit satellite system and DS-CDMA scheme for mobile voice and data communication","authors":"A. Alsamman, H. Stern","doi":"10.1109/SECON.2000.845405","DOIUrl":"https://doi.org/10.1109/SECON.2000.845405","url":null,"abstract":"We propose a low Earth orbiting (LEO) satellite system that implements a direct sequence code division multiple access (DS-CDMA) scheme to provide increased coverage and greater system capacity. All system design aspects are described, including system antennas, modulation, frequency allocation, satellite network altitude, and data/voice transmission speeds. This is then followed by capacity calculations and link budget analysis. The capacity and performance analysis of the proposed system shows that it is capable of providing high quality links with BER of 10/sup -4/ at a maximum capacity that exceeds three times the processing gain achievable by the spreading codes. The budget links analysis shows that a transmitted signal power of -3.936 dB is required by the mobile transmitter to maintain an uplink energy to interference ratio E/sub b//I/sub 0/=25.34 dB while a required satellite EIRP of only 10.75 dB is needed to maintain a downlink energy to interference ratio E/sub b//I/sub 0/=16.34 dB.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122512886","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}
{"title":"Performance estimation techniques for power system dynamic stability using least squares, Kalman filtering and genetic algorithms","authors":"E. Feilat","doi":"10.1109/SECON.2000.845618","DOIUrl":"https://doi.org/10.1109/SECON.2000.845618","url":null,"abstract":"This paper presents performance comparison of three optimal estimation techniques for on-line assessment of power system dynamic stability of single-machine infinite-bus system. The stability assessment approach is based on estimating the synchronizing and damping torque coefficients of the synchronous machine using three optimum estimation techniques including least squares (LS), Kalman filtering (KF) and genetic algorithms (GA). The coefficients are estimated from time responses of the changes in the rotor angle, rotor speed, and electromagnetic torque. The performances of the above three optimal estimation techniques were examined. Compared with the LS and GA techniques, the paper shows that KF technique offers several advantages. This includes significant reduction in computing time and storage needed for the estimation of the synchronizing and damping torque coefficients besides its robustness in dealing with noisy measurements. Thus, KF approach results in a remarkable reduction in the computational complexity associated with this problem and hence allow for on-line implementation needed for continuous monitoring of the dynamic stability indices. On the other hand, though GA gives accurate results in comparison with LS and KF. However, it was found that the calculation by GA are very time consuming rendering it unsuitable for on-line application.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122835786","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}
{"title":"Method of lines solution of axisymmetric problems","authors":"M. Sadiku, R. Garcia","doi":"10.1109/SECON.2000.845626","DOIUrl":"https://doi.org/10.1109/SECON.2000.845626","url":null,"abstract":"The method of lines, a semianalytical procedure, has become one of the standard tools for solving practical, complex electromagnetic field problems. The method of lines is used in solving axisymmetrical problems involving Laplace's equation. One numerical example is used to verify the procedure. The results obtained compare well with an analytical solution.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125832966","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}
{"title":"Prima facie obligations and a deontic transaction model for multiagent systems","authors":"Yingli Liu, A. Esterline","doi":"10.1109/SECON.2000.845608","DOIUrl":"https://doi.org/10.1109/SECON.2000.845608","url":null,"abstract":"To secure the consistency and integrity of extended multiagent actions, we subsume them under the transaction abstraction. Deontic logic, the logic of normative reasoning is used to develop a transaction model for multiagent systems. Obligations are seen as arising from speech acts of the agents in the transaction, and they structure the transaction into a hierarchy of subtransactions. A prima facie obligation is one that binds unless overridden by another obligation. We emphasize such defeasibility of obligations and exploit Y.U. Ryu's (1995; 1997) defeasible deontic logic. Our model accounts for the flexibility and fault tolerance of multiagent systems, the autonomy of agents, and the importance of negotiation.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"12 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123629938","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}
{"title":"Speech spectrogram based model adaptation for speaker identification","authors":"S. Gurbuz, J. Gowdy, Z. Tufekci","doi":"10.1109/SECON.2000.845443","DOIUrl":"https://doi.org/10.1109/SECON.2000.845443","url":null,"abstract":"Speech signal feature extraction is a challenging research area with great significance to the speaker identification and speech recognition communities. We propose a novel speech spectrogram based spectral modal adaptation algorithm. This system is based on dynamic thresholding of speech spectrograms for text-dependent speaker identification. For a given utterance from a target speaker we aim to find the target speaker among a number of speakers who exist in the system. Conceptually, this algorithm attempts to increase the spectral similarity for the target speaker while increasing the spectral dissimilarity for the non-target speaker who is a member of the enrolment set. Therefore, it removes aging and intersession-dependent spectral variation in the utterance while preserving the speaker inherent spectral features. The hidden Markov model (HMM) parameters representing each listed speaker in the system are adapted for each identification event. The results obtained using speech signals from both the Noisex database and from recordings in the laboratory environment seem promising and demonstrate the robustness of the algorithm for aging and session-dependent utterances. Additionally, we have evaluated the adapted and the non-adapted models with data recorded two months after the initial enrollment. The adaptation seems to improve the performance of the system for the aged data from 84% to 91%.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121291621","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}
{"title":"Towards implementation of a binary number system for complex numbers","authors":"T. Jamil, N. Holmes, D. Blest","doi":"10.1109/SECON.2000.845574","DOIUrl":"https://doi.org/10.1109/SECON.2000.845574","url":null,"abstract":"These days computer operations involving complex numbers are most commonly performed by dealing with the real and imaginary parts separately and then accumulating their individual results to get the final result of the operation. This divide-and-conquer technique forsakes the advantages of using complex numbers in computer arithmetic and there exists a need, at least for some problems, to treat a complex number as one unit and to carry out all operations in this form. In this paper, we have analyzed various available complex bases and proposed a (-1+j)-base binary number system for complex numbers. We have discussed the arithmetic operations of two such binary numbers and outlined work which is currently underway in this area of computer arithmetic.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115266078","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}
P. Feenstra, E. Manders, P. Mosterman, Gautam Biswas, R. Barnett
{"title":"Modeling and instrumentation for fault detection and isolation of a cooling system","authors":"P. Feenstra, E. Manders, P. Mosterman, Gautam Biswas, R. Barnett","doi":"10.1109/SECON.2000.845594","DOIUrl":"https://doi.org/10.1109/SECON.2000.845594","url":null,"abstract":"Functional redundancy techniques for fault detection and isolation (FDI) in dynamic systems requires close interaction between system instrumentation, modeling and analysis. Effective FDI requires detailed and accurate models to trade and analyze system behavior, including transient phenomena that result from faults. It also requires appropriate instrumentation technology to provide the measurements to capture and analyze system behavior. Models and measurements must be matched carefully to provide sufficient observability and effective analysis. In this paper we demonstrate the development of FDI systems for complex applications by presenting the modeling and instrumentation of an automobile combustion engine cooling system. We have developed a qualitative parameter estimation methodology for FDI. A system model is represented as a graph that captures the dynamic behavior of the system. To demonstrate the applicability a small leak is artificially introduced in the cooling system and accurately detected and isolated.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131583462","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}
{"title":"Feature extraction using discrete wavelet transform for speech recognition","authors":"Z. Tufekci, J. Gowdy","doi":"10.1109/SECON.2000.845444","DOIUrl":"https://doi.org/10.1109/SECON.2000.845444","url":null,"abstract":"We propose a new feature vector consisting of mel-frequency discrete wavelet coefficients (MFDWC). The MFDWC are obtained by applying the discrete wavelet transform (DWT) to the mel-scaled log filterbank energies of a speech frame. The purpose of using the DWT is to benefit from its localization property in the time and frequency domains. MFDWC are similar to subband-based (SUB) features and multi-resolution (MULT) features in that both attempt to achieve good time and frequency localization. However, MFDWC have better time/frequency localization than SUB features and MULT features. We evaluated the performance of new features for clean speech and noisy speech and compared the performance of MFDWC with mel-frequency cepstral coefficients (MFCC), SUB features and MULT features. Experimental results on a phoneme recognition task showed that a MFDWC-based recognizer gave better results than recognizers based on MFCC, SUB features, and MULT features for white Gaussian noise, band-limited white Gaussian noise and clean speech cases.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128618068","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}
{"title":"Comparison of two nonlinear adaptive control strategies","authors":"P. Koseeyaporn, G. Cook, A. Strauss","doi":"10.1109/SECON.2000.845610","DOIUrl":"https://doi.org/10.1109/SECON.2000.845610","url":null,"abstract":"The performance of two adaptive controllers has been compared based on a simulation platform. The control schemes are composed of model based adaptive control and adaptive backstepping with MT-filter. Both of the adaptive controllers have been evaluated in terms of estimated parameter convergence, dynamic performance, and ability of disturbance rejection under the same nonlinear system.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123112256","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}