{"title":"Analysis of circular waveguide with strips loaded walls using asymptotic boundary conditions","authors":"A. Kishk, M. Morgan","doi":"10.1109/SECON.2000.845592","DOIUrl":"https://doi.org/10.1109/SECON.2000.845592","url":null,"abstract":"A circular waveguide with walls coated by uniform dielectric layer loaded with conducting strips is analyzed. The strips are oriented along the waveguide axis (z-axis) or /spl phi/-directed in a periodic form. With the proper coating thickness artificially hard or soft surfaces can be realized. The simple approximate asymptotic strips boundary conditions (ASBC) are used to analyze the structure. When the waveguide walls are hard or soft, a linear field distribution across the waveguide cross section can be obtained. Then the waveguide can be used as an antenna with good linear polarization. The characteristics of such waveguides are presented with sample radiation patterns.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"29 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":"133775011","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":"Pattern recognition techniques applied to the classification of swing curves generated in a power system transient stability study","authors":"P. Yan, A. Sekar, P. Rajan","doi":"10.1109/SECON.2000.845619","DOIUrl":"https://doi.org/10.1109/SECON.2000.845619","url":null,"abstract":"This paper presents two approaches to determine the stability of power system based on pattern recognition techniques using artificial neural network (ANN) and linear classification. The two major states of power system operations are termed stable and unstable. The performance index can be expressed by the patterns and then be recognized by a properly trained neural network or a linear discriminant function. A feature vector selected by fast Fourier transformation is employed for reducing input pattern dimension. ANN is found to be an efficient tool for identifying stable states. System stability or instability indices can be predicted quickly and accurately.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"93 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":"115435317","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":"Internet based digital government model development","authors":"S. Wunnava, M. V. Reddy","doi":"10.1109/SECON.2000.845470","DOIUrl":"https://doi.org/10.1109/SECON.2000.845470","url":null,"abstract":"The present trend in information technology (IT) is to access and process information online and minimize paper and other routine transactions. This is particularly true for electronic commerce, distance learning and education, teleconferencing etc. However, the biggest users of paper and other conventional transactions are governments at all levels. There is a tremendous amount of information flow among different branches of the government at the Federal, State, County, City and at other local levels (USA). There has been a Federal directive in the past few years to get the government transactions online in a reliable and secure fashion. There is a substantial amount of information needed for public access with out any security problems. Recent advances in the World Wide Web and emerging Internet 2 connectivity have virtually changed the way the public can deal with information from commercial, educational and government circles. At Florida International University, a Web based public information network model as a part of the digital government activity is being developed and implemented. The model consists of a dynamically configured server with government affiliated information such as crime, educational and hospital statistics for public access. Also, methodologies are being formulated to incorporate data driven security schemes for private access. Practical case studies have been implemented whereby citizens from one part of the country can get public information access from a far remote location in another location. The authors present digital government oriented public network architecture with state of the art hardware and software modules and discuss applications.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"105 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":"115694779","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":"Phase shift of the electromagnetic waves due to dry snow","authors":"C. Ventrice, S. C. Fares, M. A. Fares","doi":"10.1109/SECON.2000.845452","DOIUrl":"https://doi.org/10.1109/SECON.2000.845452","url":null,"abstract":"Based on the point matching technique, the phase shift of the electromagnetic waves due to dry snow is computed. The analysis is restricted to the forward-scattering direction from oblate spheroidal dry snow. Numerical results are obtained for two orthogonal polarizations of the incident wave. The calculations are made for various microwave frequencies, between 6 and 100 GHz, and also for different precipitation rates, between 0.5 and 3 mm/hr. The effect of the frequency and the precipitation rate on the phase shift is examined. It is found that at a fixed value of the precipitation rate, the phase shift of both polarizations decreases with increasing frequency. It is also observed that at a fixed frequency, the phase shift of both polarizations decreases with increasing precipitation rate. The differential phase shift is found to follow the same trend as the phase shift for frequencies greater than 20 GHz and are negligible for frequencies below 20 GHz. In addition, it is found that the phase shift of snow decreases with snow wetness for fixed precipitation rate and frequency.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"239 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":"116411688","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":"Modeling societies of agents using modal logics","authors":"Burge, A. Esterline","doi":"10.1109/SECON.2000.845429","DOIUrl":"https://doi.org/10.1109/SECON.2000.845429","url":null,"abstract":"Presents a framework that shows how epistemic logic and deontic logic can be used to model a multi-agent system consisting of humans and non-human agents. Modeling agents with epistemic and deontic logic also captures the interdependencies between human and non-human agents. Epistemic logic addresses belief and knowledge (notably common knowledge), and, in many applications in computer science, it specifically addresses knowledge acquired by communication. With deontic logic, we represent obligations, prohibitions and permissions applying to agents. Axioms and rules of inference represent a deductive system for modal logics, and Kripke structures furnish semantic models in which propositions are evaluated to true or false. We are concerned with agents' actions, their attitudes and what they know. Our framework emphasizes the ability to maintain ongoing relationships among agents. Such a system is called reactive. We contrast a reactive system with a transformational system, which, given a set of inputs, produces outputs upon program termination. In developing this framework, we address the concepts of a multi-agent/multi-human collaboration.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"31 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":"127716522","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":"Power disturbance identification through pattern recognition system","authors":"Soon-Kin Chai, Sekar, Rajan","doi":"10.1109/SECON.2000.845454","DOIUrl":"https://doi.org/10.1109/SECON.2000.845454","url":null,"abstract":"This paper presents an artificial intelligent system to identify and classify the power disturbance waveforms that are obtained from the monitoring system in a power control station. The pattern recognition technique used in this paper is a combination of Bayes' linear classifier and artificial neural network (ANN). Simulated disturbance waveforms are transformed by the fast Fourier transformation and the feature vector is extracted. The weight matrix for ANN is generated by the linear classifier and fed into ANN. The product of the test sample and the weight matrix will be the input of the ANN. The system can identify the power disturbance and it can provide the power surge frequency as well.","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":"130205473","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":"IPv6 header compression algorithm supporting mobility in wireless networks","authors":"J.D. Lim, H. Stern","doi":"10.1109/SECON.2000.845628","DOIUrl":"https://doi.org/10.1109/SECON.2000.845628","url":null,"abstract":"This paper proposes a new compression algorithm supporting IPv6 mobility in wireless communications, called the IPv6 header compression algorithm. The idea of the algorithm is to provide an effective compression rate to support the mobility and the spectral efficiency required in wireless networks. The data link layer and the physical layer based on the OSI model are thus considered. To support the mobility it is assumed that any change of other fields in an IPv6 header except care-of-address disconnects the call. The address assignment method and LZW coding delivers significant compression of the long IPv6 header for the initial connection. After the initial communication, the algorithm provides compression through comparator coding and LZW coding. The algorithm's performance is evaluated using both analytic techniques and computer simulation.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"33 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":"126239079","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":"Gain improvement and backlobe reduction in vee dipoles with director elements","authors":"S. Licul, A. Safaai‐Jazi, A. Chatzipetros","doi":"10.1109/SECON.2000.845465","DOIUrl":"https://doi.org/10.1109/SECON.2000.845465","url":null,"abstract":"A new vee dipole antenna is proposed as a modification to the conventional vee dipole for improving the gain and reducing the back radiation level without increasing its size. The new vee dipole contains two additional smaller pieces of wire on the arms of the conventional vee dipole that act primarily as directors. The director elements are isolated from the main arms of the vee dipole. The parameters defining the position and the length of the director elements are optimized such that maximum directivity is achieved and lower minor lobes are maintained. The radiation properties of the vee dipole with director elements are investigated both numerically and experimentally. In an example design, a gain improvement of 1.4 dB and a reduction of more than 12 dB in back radiation are predicted. The computed radiation pattern is in good agreement with the measured pattern.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"64 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":"128567139","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":"Adaptive Reed-Solomon coding for wireless ATM communication","authors":"S.J. Li, K. Pan, J. Yuan, A. Vigil, A. Berg","doi":"10.1109/SECON.2000.845420","DOIUrl":"https://doi.org/10.1109/SECON.2000.845420","url":null,"abstract":"A new adaptive shortened Reed-Solomon (ASRS) coding for wireless ATM communication is proposed. The scheme enhances the existing variable shortened RS coding by adding a changeable generator polynomial to provide the needed redundancy, thus maximizing the system bandwidth efficiency and application flexibility.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"369 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114008260","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}