{"title":"Electromagnetic field computations on massively parallel computers","authors":"R. S. David, T. Wille","doi":"10.1109/SOUTHC.1995.516132","DOIUrl":"https://doi.org/10.1109/SOUTHC.1995.516132","url":null,"abstract":"A general overview is given of the use of massively parallel computers in the determination of electromagnetic fields. The emphasis is on parallel machines with a single-instruction multiple-data (SIMD) architecture. Various measures of program performance are critically discussed as is the issue of scalability of the computations. An analysis of the parallelism inherent in the method of moments (MoM), the finite-difference time-domain (FDTD) method, and the finite element method (FEM) is presented. Since communication is an important component in a parallel algorithm, the interconnection network between processors becomes an essential consideration in program analysis. Most of the discussion centers around two-dimensional meshes and hypercubes, complemented by a brief overview of embedding theory, which allows other networks to be emulated. These theoretical concepts are illustrated on a specific example involving the modeling, by the FDTD method, of the scattering of a plane wave off a dielectric sphere. Calculations were performed on the MasPar MP-1 family of SIMD computers. Specific models used contain between 1024 and 8192 processors arranged in a two-dimensional mesh with nearest and next-nearest neighbor connections between PEs. Code development, starting from a sequential program, is discussed, as are the details of the data mapping. Timing results are presented for a range of problem sizes and show considerable speed-up compared to sequential programming. These results are compared and contrasted with those obtained by other authors.","PeriodicalId":341055,"journal":{"name":"Proceedings of Southcon '95","volume":"299 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124276008","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":"Pipes and types: options for delivering broadband services to residential subscribers","authors":"J. M. Anderson","doi":"10.1109/SOUTHC.1995.516112","DOIUrl":"https://doi.org/10.1109/SOUTHC.1995.516112","url":null,"abstract":"As the era of multimedia applications arrives, the daunting challenge of actually delivering broadband services to residential subscribers must be met. Several technologically feasible solutions to this problem have been proposed including the use of copper, fiber, and hybrid fiber/coax transmission systems. The paper explores both the advantages and disadvantages of the technological and real-world aspects offered by each of these technologies. Conclusions and recommendations of technologies which are best-suited for real-world deployment are made based on the issues discussed.","PeriodicalId":341055,"journal":{"name":"Proceedings of Southcon '95","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121450830","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":"Educational activities of the IEEE","authors":"P. Wahid","doi":"10.1109/SOUTHC.1995.516111","DOIUrl":"https://doi.org/10.1109/SOUTHC.1995.516111","url":null,"abstract":"A strategic objective of the Educational Activities Board (EAB) of the IEEE is the reshaping of educational programs to help members prepare for careers and employment in a rapidly changing technical arena. The Educational Activities Board works with IEEE Sections to promote an awareness of the available educational resources and in planning educational programs. The IEEE encourages the involvement of its members with their student branches, pre-college programs and in explaining the role of the engineer in the community. In addition to numerous technical conferences hosted by the IEEE at the national and international levels, many technical books and periodicals are available to keep members abreast with the latest advances in electrical engineering research. The IEEE has a collection of video tapes on technical topics, publishes the IEEE Standards and provides multi-media self study courses. This presentation will cover the educational activities mentioned above. In addition, specific activities of the Education Chapter of the IEEE Orlando Section will be presented.","PeriodicalId":341055,"journal":{"name":"Proceedings of Southcon '95","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121723641","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":"Toward an integrated curriculum of systems, controls, and machinery","authors":"S. Chandhoke, Z. Qu, J.H. Kaloust, H. Cai","doi":"10.1109/SOUTHC.1995.516109","DOIUrl":"https://doi.org/10.1109/SOUTHC.1995.516109","url":null,"abstract":"Development and the continuing trend in the global economy, increasing competition, and the information industry have changed the skill requirements of a competitive work force. Consequently, engineering students must be aware of contemporary practice in a much broader sense. Specifically, students who desire to pursue their career in the control related areas such as manufacturing and automation must have a strong multidisciplinary background in theory, design, devices, and instrumentation. The paper presents issues and concerns regarding the changes needed in order to face the challenge. This paper also describes efforts in curriculum and laboratory development in the areas of systems, controls, and machinery at the University of Central Florida.","PeriodicalId":341055,"journal":{"name":"Proceedings of Southcon '95","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122809757","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":"The application of wavelets to data compression","authors":"C.E. Stirman","doi":"10.1109/SOUTHC.1995.516094","DOIUrl":"https://doi.org/10.1109/SOUTHC.1995.516094","url":null,"abstract":"Modern reconnaissance sensors collect, digitize and store data at very high rates for long periods of time for analysis (both human and machine) at the end of the flight. As the information is often time critical, there is a desire to transmit the data ahead for pre-processing on the ground. The paper briefly addresses from a system standpoint, issues related to data compression. A typical system is discussed and used to suggest that wavelets rather than the joint photographic experts group (JPEG) standard may provide an attractive solution to the transmission of time critical reconnaissance data from a cost and implementation standpoint. Several examples are used to illustrate the points.","PeriodicalId":341055,"journal":{"name":"Proceedings of Southcon '95","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130095520","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":"Vibration analysis of an electronic enclosure using finite element analysis","authors":"M. Zampino","doi":"10.1109/SOUTHC.1995.516125","DOIUrl":"https://doi.org/10.1109/SOUTHC.1995.516125","url":null,"abstract":"Finite element analysis is used to predict the response of a rectangular box electronic enclosure and PWB to a random vibration load. Comparison of results is made for different modeling methodologies, including the effects of mesh size and mass distribution techniques.","PeriodicalId":341055,"journal":{"name":"Proceedings of Southcon '95","volume":"503 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124457676","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":"A new dual-bus metropolitan area communication network","authors":"M. Ilyas, S. Chauhan","doi":"10.1109/SOUTHC.1995.516107","DOIUrl":"https://doi.org/10.1109/SOUTHC.1995.516107","url":null,"abstract":"Describes and analyzes a new architecture for metropolitan area networks (MANs). The architecture is based on a slotted unidirectional dual bus structure and is called dual bus R-net. A master station for each bus generates transmission frames that consist of a reservation slot and various information slots. The information slots are reserved by stations using the reservation slot before they can be used for transmission of information. Evaluation of dual bus R-net, using simulation, indicates that its performance is better than that of other similar MANs, in terms of channel utilization, bounded delay, and fair access etc.","PeriodicalId":341055,"journal":{"name":"Proceedings of Southcon '95","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116384334","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":"Implementation of 2-D separable-in-denominator digital filters for real-time processing","authors":"A. Zilouchian, Ziqiang Huang","doi":"10.1109/SOUTHC.1995.516069","DOIUrl":"https://doi.org/10.1109/SOUTHC.1995.516069","url":null,"abstract":"The general decomposition of separable in denominator 2-D discrete systems is reported. Several novel realizations for separable-in-denominator 2-D digital filters are presented. The number of required multipliers and additions for the implementation of these structures are reduced in comparison with the previously reported structures. The proposed realizations possess high degrees of parallelism/modularity which are suitable for VLSI design and implementation.","PeriodicalId":341055,"journal":{"name":"Proceedings of Southcon '95","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128504296","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":"Artificial intelligence and subjective experience","authors":"L. Adeofe","doi":"10.1109/SOUTHC.1995.516138","DOIUrl":"https://doi.org/10.1109/SOUTHC.1995.516138","url":null,"abstract":"Artificial intelligence (AI) is the scientific study of occurrent and dispositional mentation with a view to providing adequate computational models of the mind. As a science, AI is committed to an objective, third-person verifiable account of reality. If, however, there are aspects of our mentation that are irreducibly non-physical and subjective, then those aspects are forever closed to any computational model of the mind; and AI is in principle doomed. This, to my mind, is the most serious objection to AI. In this essay, I consider the objection and suggest how to respond to it.","PeriodicalId":341055,"journal":{"name":"Proceedings of Southcon '95","volume":"16 Suppl 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126076812","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":"Physical properties of low temperature solders and die attach materials","authors":"G. González, Yanqing Liu, S. Maganti","doi":"10.1109/SOUTHC.1995.516127","DOIUrl":"https://doi.org/10.1109/SOUTHC.1995.516127","url":null,"abstract":"The properties at the temperature range of -55/spl deg/C to 180/spl deg/C of several common solders used in electronic packaging are analyzed for mechanical properties (elastic modulus, yield point, ultimate tensile strength (UTS), and creep) and physical properties (microstructure and thermal expansion coefficient). Numerous experimental methods are utilized and correlated. The finite element method is used to model thermal stresses (thermal fatigue) induced by the mismatched coefficient of thermal expansion using all the results obtained in this work. Some preliminary data are presented together with previous data obtained in our laboratories for the Au-Sn eutectic alloy.","PeriodicalId":341055,"journal":{"name":"Proceedings of Southcon '95","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126519750","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}