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Proceedings of SOUTHEASTCON '96最新文献

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Analysis of planar microstrip antennas using the finite element method 平面微带天线的有限元分析
Proceedings of SOUTHEASTCON '96 Pub Date : 1996-04-11 DOI: 10.1109/SECON.1996.510043
R. Hestand, C. Christodoulou
{"title":"Analysis of planar microstrip antennas using the finite element method","authors":"R. Hestand, C. Christodoulou","doi":"10.1109/SECON.1996.510043","DOIUrl":"https://doi.org/10.1109/SECON.1996.510043","url":null,"abstract":"The popularity and usefulness of microstrip antennas has made it increasingly necessary to find a method to accurately determine the radiation patterns of these antennas through the modeling process. One such tool studied was MSC/EMAS and MSC/XL, which are programs that utilize the finite element method. In this paper, these programs are used to construct and analyze several microstrip antennas such as a patch antenna, a square spiral antenna and an equiangular spiral antenna (the spiral antennas have become popular due their very large bandwidth and circular polarization). The far-field patterns were obtained and verified with a suitable reference, such as experimental data and/or theoretical data. The current density distributions on the radiating conductors were also examined to provide insight into the radiation of these antennas.","PeriodicalId":338029,"journal":{"name":"Proceedings of SOUTHEASTCON '96","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130687685","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
Parallel implementation of the Hough transform for the extraction of rectangular objects 用于矩形对象提取的霍夫变换的并行实现
Proceedings of SOUTHEASTCON '96 Pub Date : 1996-04-11 DOI: 10.1109/SECON.1996.510069
L. Hopwood, W. Miller, A. George
{"title":"Parallel implementation of the Hough transform for the extraction of rectangular objects","authors":"L. Hopwood, W. Miller, A. George","doi":"10.1109/SECON.1996.510069","DOIUrl":"https://doi.org/10.1109/SECON.1996.510069","url":null,"abstract":"In image processing applications, the storage capacity required for images can exceed feasible storage capabilities. A technique to alleviate this problem by removal of unnecessary background information through image processing is discussed. Specifically, a parallel implementation of a first-order, derivative-based edge detection algorithm and the Hough transform applied to rectangular objects is given. A variation of the classical Hough transform to detect lines is employed to locate rectangular objects of known size in an image. A parallel virtual machine is used to exploit the inherent parallelism found in these algorithms over a cluster of 7 workstations. Through the use of these techniques, the rectangular object is detected and stored as a separate image, and storage capacity can be reduced by approximately 30%, not including standard data compression. Parallelizing the algorithms provides a significant speedup advantage over the normal sequential operation of the programs.","PeriodicalId":338029,"journal":{"name":"Proceedings of SOUTHEASTCON '96","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117013805","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: 6
Optimal control problems for heavy traffic queues 大流量队列的最优控制问题
Proceedings of SOUTHEASTCON '96 Pub Date : 1996-04-11 DOI: 10.1109/SECON.1996.510030
K. Ramachandran
{"title":"Optimal control problems for heavy traffic queues","authors":"K. Ramachandran","doi":"10.1109/SECON.1996.510030","DOIUrl":"https://doi.org/10.1109/SECON.1996.510030","url":null,"abstract":"The author is concerned with optimal or nearly optimal routing of a queueing system under heavy traffic conditions. Optimal and nearly optimal control problems for a queueing network is examined. Various inputs and service interruptions are the controls. It is shown that the scaled controlled reflected system converges to a controlled limit reflected diffusion and the optimal policies for the limit when adapted to the physical system are nearly optimal. The martingale problem methods are utilized in the analysis.","PeriodicalId":338029,"journal":{"name":"Proceedings of SOUTHEASTCON '96","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132864231","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
An optimum Laguerre expansion for the envelope PDF of two sine waves in Gaussian noise 高斯噪声中两个正弦波包络PDF的最优拉盖尔展开
Proceedings of SOUTHEASTCON '96 Pub Date : 1996-04-11 DOI: 10.1109/SECON.1996.510048
A. Abdi, S. Nader-Esfahani
{"title":"An optimum Laguerre expansion for the envelope PDF of two sine waves in Gaussian noise","authors":"A. Abdi, S. Nader-Esfahani","doi":"10.1109/SECON.1996.510048","DOIUrl":"https://doi.org/10.1109/SECON.1996.510048","url":null,"abstract":"The sum of two randomly-phased sine waves and Gaussian noise arises in various fields of communications. A Laguerre series and also a power series are introduced, for the envelope PDF of this random process. Moreover, tight upper bounds are derived for the truncation error of these two infinite series. Comparison of these two upper bounds show that the Laguerre series is superior to the power series; because for a fixed number of terms, it yields minimum truncation error.","PeriodicalId":338029,"journal":{"name":"Proceedings of SOUTHEASTCON '96","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134176365","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: 6
Parameters and order estimation for non-Gaussian ARMA processes 非高斯ARMA过程的参数和阶数估计
Proceedings of SOUTHEASTCON '96 Pub Date : 1996-04-11 DOI: 10.1109/SECON.1996.510123
A. Al-Smadi, D. Wilkes
{"title":"Parameters and order estimation for non-Gaussian ARMA processes","authors":"A. Al-Smadi, D. Wilkes","doi":"10.1109/SECON.1996.510123","DOIUrl":"https://doi.org/10.1109/SECON.1996.510123","url":null,"abstract":"There has been a lot of interest in using higher-order statistics (such as cumulants) in signal processing and system identification problems. There are several reasons behind this interest. First, higher-order cumulants are blind to all kinds of Gaussian processes, hence cumulants suppress additive colored Gaussian noise. Therefore if the signal to be analysed is contaminated by additive Gaussian noise, the noise will vanish in the cumulant domain. Thus, a greater degree of noise immunity is possible. Second, cumulants are useful for identifying nonminimum phase systems or for reconstructing nonminimum phase signals if the signals are non-Gaussian. That is because cumulants preserve the phase information of the signal. Third, cumulants are useful for detecting and characterizing the properties of nonlinear systems. The emphasis of this paper is based on the first property. We address the problem of estimating the orders and the parameters of a non-Gaussian autoregressive moving-average (ARMA) and autoregressive with exogenous input (ARX) processes using third order cumulants. The ARMA processes are widely used in signal modeling and spectrum estimation.","PeriodicalId":338029,"journal":{"name":"Proceedings of SOUTHEASTCON '96","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133334788","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
Termination detection using causality and vector time 使用因果关系和矢量时间的终止检测
Proceedings of SOUTHEASTCON '96 Pub Date : 1996-04-11 DOI: 10.1109/SECON.1996.510151
S. Peterson, P. Kearns
{"title":"Termination detection using causality and vector time","authors":"S. Peterson, P. Kearns","doi":"10.1109/SECON.1996.510151","DOIUrl":"https://doi.org/10.1109/SECON.1996.510151","url":null,"abstract":"A problem unique to distributed systems is the need to determine that a computation is terminated. We use vector clocks as a basis for a termination detection protocol in which each process is only contacted once following termination. In addition we also present a definition of termination that does not depend on global state. This definition is based on the causal relationships between events and is stated in terms of Lamport's \"happens before\" relation. Because the protocol is also specified in causal terms, this definition can be easily used to formally argue the correctness of the algorithm.","PeriodicalId":338029,"journal":{"name":"Proceedings of SOUTHEASTCON '96","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133914454","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
Meeting the challenge of military avionics procurement in beyond the end of the century 应对本世纪末以后军事航空电子设备采购的挑战
Proceedings of SOUTHEASTCON '96 Pub Date : 1996-04-11 DOI: 10.1109/SECON.1996.510144
V.H. Grimes, L. Willis
{"title":"Meeting the challenge of military avionics procurement in beyond the end of the century","authors":"V.H. Grimes, L. Willis","doi":"10.1109/SECON.1996.510144","DOIUrl":"https://doi.org/10.1109/SECON.1996.510144","url":null,"abstract":"The military avionics procurement system is increasingly challenged to deliver sufficient quantity and performance in avionics to meet a wide variety of operational user requirements. This paper traces the development of military avionics over the past forty years to provide a historical perspective of the process. The authors conducted an extensive review of user requirements for selected fixed and rotary wing aircraft assigned to the U.S. Air Force and Army. This study lead to the development of a two-tiered approach to aircraft avionics. The core avionics package (CAP) provides the capabilities required of all aircraft. Extended avionics packages (EAPs) are sensor packages that use the services of the CAP to meet the full user requirement. The authors address several of the challenges that must be met to implement a new approach towards the development of military avionics. They recommend additional study of two fundamental concepts in the Department of Defense (DOD) avionics acquisition process.","PeriodicalId":338029,"journal":{"name":"Proceedings of SOUTHEASTCON '96","volume":"1 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113939152","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
Information sharing using the Web 使用Web进行信息共享
Proceedings of SOUTHEASTCON '96 Pub Date : 1996-04-11 DOI: 10.1109/SECON.1996.510108
Joon-Bo Choi, Hyoeng-Ok Kim
{"title":"Information sharing using the Web","authors":"Joon-Bo Choi, Hyoeng-Ok Kim","doi":"10.1109/SECON.1996.510108","DOIUrl":"https://doi.org/10.1109/SECON.1996.510108","url":null,"abstract":"In general, information sharing can be used to more effectively manage specific targets through a variety of participant information. In particular, it is extremely important that intended purposes be achieved through strengthening of harmony among specific groups. In Korea, projects forming the so-called Highly Advanced Nation (HAN) goal have been in progress at government level since 1992. Of such projects in particular, development of B-ISDN, to be the basis of the information industry, is one of the most important. A variety of groups, such as research institutes, schools and enterprises, are participating in the research and development activities related to such large projects; and, to effectively execute the projects, information sharing is required. This paper describes a system (HAN/B-ISDN Information Center: HIC) capable of managing information through the use of WWW, and proposes methodology related to system realization.","PeriodicalId":338029,"journal":{"name":"Proceedings of SOUTHEASTCON '96","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124510022","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
Modeling technique for DC to DC converters using Weinberg topology 使用温伯格拓扑的直流到直流变换器建模技术
Proceedings of SOUTHEASTCON '96 Pub Date : 1996-04-11 DOI: 10.1109/SECON.1996.510133
P. Kornetzky, Z. Moussaoui, I. Batarseh, S. Hawasly, C. Kennedy
{"title":"Modeling technique for DC to DC converters using Weinberg topology","authors":"P. Kornetzky, Z. Moussaoui, I. Batarseh, S. Hawasly, C. Kennedy","doi":"10.1109/SECON.1996.510133","DOIUrl":"https://doi.org/10.1109/SECON.1996.510133","url":null,"abstract":"In this paper, the authors present a simplified analysis and design of a DC-to-DC power converter unit (DDCU) using the improved Weinberg topology. The DDCU has the added complication that the turns ratio of the power transformer N/sub s//N/sub p/=m is different than the turns ratio of the inductor transformer N/sub LS//N/sub L/=n. The state-space averaging approach is used for modeling the reduced order Weinberg power converter. This model can be used to drive frequency domain, transient and steady state responses for current mode and voltage mode control power converters. Through state-space averaging, the DDCU equivalent circuit can be used to obtain all the relevant power stage transfer functions. To verify the steady state and dynamic models results, a PSPICE simulation for a given design example is presented.","PeriodicalId":338029,"journal":{"name":"Proceedings of SOUTHEASTCON '96","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129027129","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
USAB where did we come from? [IEEE activities] USAB:我们从哪里来?(IEEE活动)
Proceedings of SOUTHEASTCON '96 Pub Date : 1996-04-11 DOI: 10.1109/SECON.1996.510165
J. J. Guarrera
{"title":"USAB where did we come from? [IEEE activities]","authors":"J. J. Guarrera","doi":"10.1109/SECON.1996.510165","DOIUrl":"https://doi.org/10.1109/SECON.1996.510165","url":null,"abstract":"The article discusses the impact of the IEEE Board proposed constitutional amendment to \"permit\" the IEEE to become involved in the economic welfare of the membership. This was supported by the IEEE Board and the local leadership of the Institute and passed with an all time record of 82% of the votes cast in favor, and an all time record of voter turnout. The USAB, with a very limited budget started working on all the problems at once! It received input from all of the local leaders and activists. It established committees on: age discrimination; pensions; legal defense fund; patent rights of the employed engineer; outreach to inform members of the USAB and its activities; and worked closely with the CSIT on the Bart case.","PeriodicalId":338029,"journal":{"name":"Proceedings of SOUTHEASTCON '96","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129140094","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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