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1993 (25th) Southeastern Symposium on System Theory最新文献

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Neural network techniques applied to seismic event classification 神经网络在地震事件分类中的应用
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522799
M. D. Murphy, J.A. Cercone
{"title":"Neural network techniques applied to seismic event classification","authors":"M. D. Murphy, J.A. Cercone","doi":"10.1109/SSST.1993.522799","DOIUrl":"https://doi.org/10.1109/SSST.1993.522799","url":null,"abstract":"An artificial neural network is incorporated as part of a software simulation system for the purpose of classifying seismic events from waveform data. Unprocessed seismograms are not well suited for presentation to neural networks because of the large number of data points required to represent a seismic event in the time domain. Parametric representation of the seismic event provides adequate information for accurate event classification, while significantly reducing the minimum size and is comprised of five signal classes, with 2400 samples per seismic trace. Each waveform in this database is parametrically represented by ten central moments. These moments are presented to the neural network for classification. Correct seismic event classification accuracy exceeds 98%.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131632996","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
SPICE-A system analysis program? 系统分析程序?
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522769
J.B. Brown, C.E. Smith
{"title":"SPICE-A system analysis program?","authors":"J.B. Brown, C.E. Smith","doi":"10.1109/SSST.1993.522769","DOIUrl":"https://doi.org/10.1109/SSST.1993.522769","url":null,"abstract":"The use of SPICE behavioral models for system analysis is studied. The basic structure of behavioral models is discussed. Examples of the simulation of a system differential equation using an analog computer-type approach and the simulation of a feedback control system are given. The analysis technique is based on a block diagram description of system elements using subcircuits that lead to a very simple SPICE netlist. A library of basic system elements, SYS.LIB, has been developed for the use of SPICE as a system analysis program.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131890101","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
A radial basis network for seismic signal discrimination 地震信号识别的径向基网络
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522800
S. Goodman
{"title":"A radial basis network for seismic signal discrimination","authors":"S. Goodman","doi":"10.1109/SSST.1993.522800","DOIUrl":"https://doi.org/10.1109/SSST.1993.522800","url":null,"abstract":"An application of the radial basis function network to seismic waveform classification is presented. The network performs generalization and discrimination of input patterns using an external teacher. Modifications to this scheme are described. They include: (1) changing the size of the spheres; (2) using a random walk scheme during testing; (3) gradually decreasing the initial radii to avoid overlap of two distinct regions; (4) a conflict resolution mechanism; and (5) a simple means of decreasing the sphere radius. The applications to seismic signals include using the moments over a sliding window and the first several points of a wavelet. The speed of training of this network exceeds that of backpropagation with the same error rate.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120973560","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
Design of a programmable rainfall simulator 可编程降雨模拟器的设计
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522773
S. A. Smith, J. Schreiber
{"title":"Design of a programmable rainfall simulator","authors":"S. A. Smith, J. Schreiber","doi":"10.1109/SSST.1993.522773","DOIUrl":"https://doi.org/10.1109/SSST.1993.522773","url":null,"abstract":"A programmable controller (PIC) was designed to provide a greater flexibility in rainfall simulator research. The PIC controlled the rainfall simulator using a process control board employing a microprocessor. This control board provided programmable capability previously unavailable in field research. Software to control the system was developed using assembly language and a microprocessor emulator. This software provided user-friendly interaction and the ability for variations in rainfall intensity and storm duration in simulated rainfall studies.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116445033","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
Evaluation of control strategies for fixed-bed coal gasifiers using MGAS MGAS固定床煤气炉控制策略评价
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522785
S. Reddy, A. Farell
{"title":"Evaluation of control strategies for fixed-bed coal gasifiers using MGAS","authors":"S. Reddy, A. Farell","doi":"10.1109/SSST.1993.522785","DOIUrl":"https://doi.org/10.1109/SSST.1993.522785","url":null,"abstract":"The MGAS (METC Gasifier Advanced Simulation) model is used to simulate a moving-bed gasifier. The MGAS code is written in FORTRAN and takes into account details in specifying the reactor geometry, reaction kinetics, etc. Steady-state control analysis tools that use MGAS to uncover the optimal control strategies are demonstrated. These strategies are compared with those that are known to be suitable in the actual gasifier.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132722567","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
The effect of random phase variation of turbulence on image resolution 湍流随机相位变化对图像分辨率的影响
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522765
K. Park, A. Poularikas
{"title":"The effect of random phase variation of turbulence on image resolution","authors":"K. Park, A. Poularikas","doi":"10.1109/SSST.1993.522765","DOIUrl":"https://doi.org/10.1109/SSST.1993.522765","url":null,"abstract":"The turbulence produced by the shearing process between the cooling gas and atmosphere of a hypersonically moving vehicle, which contributes to the image degradation, is addressed. Based on the random phase variation of the optical wavefront, the modulation transfer function (MTF) can be specified to characterize the effect of turbulence on the image resolution. The use of computer simulation to generate the random phase variation and variance and the corresponding MTF is reported. Different types of phase variation are investigated. The MTF for each case is used to find the effect on image degradation and resolution. The effect of the nonuniform turbulence intensity across the optical window is also investigated and compared with results for the uniform case.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"47 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133659622","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
Embedded system tools 嵌入式系统工具
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522816
B. Kanawati, W.E. Cowart
{"title":"Embedded system tools","authors":"B. Kanawati, W.E. Cowart","doi":"10.1109/SSST.1993.522816","DOIUrl":"https://doi.org/10.1109/SSST.1993.522816","url":null,"abstract":"Differences in the set of tools required for software development in the traditional environment versus the embedded system environment are considered. Techniques to solve unique development requirements for embedded systems are explored through an existing example. Sets of tool solutions consisting of combinations of IBM, IBM business partners, and vendors products that address various requirements of the software development community are shown in the solution example.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"358 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133198194","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
Range correlation effects on phase noise spectra 距离相关对相位噪声谱的影响
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522829
M.P. Burt, M. Budge
{"title":"Range correlation effects on phase noise spectra","authors":"M.P. Burt, M. Budge","doi":"10.1109/SSST.1993.522829","DOIUrl":"https://doi.org/10.1109/SSST.1993.522829","url":null,"abstract":"The authors address the problem of characterizing the effects of range correlation and local oscillator phase noise on the intermediate frequency spectrum of a coherent, continuous wave or pulsed Doppler radar. Since the phase noise is a stochastic process, the problem is defined in a stochastic processes context and a reasonable set of assumptions are imposed to produce a general, straight forward and easily understood solution. The solution clearly indicates how the natural spectrum of the scatterer, the phase noise spectrum, and range correlation combine to produce the intermediate frequency spectrum. A specific example is provided for the case of a continuous wave radar.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116422742","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
Improved dynamic programming algorithms for sequential decision processes with applications to economic dispatches of power systems 时序决策过程的改进动态规划算法及其在电力系统经济调度中的应用
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522757
M. Sun
{"title":"Improved dynamic programming algorithms for sequential decision processes with applications to economic dispatches of power systems","authors":"M. Sun","doi":"10.1109/SSST.1993.522757","DOIUrl":"https://doi.org/10.1109/SSST.1993.522757","url":null,"abstract":"A typical model for problems involving sequential decision processes in a discrete-time setting is considered. Several means to improve the regular dynamic programming method for solving the model problem are proposed. Reducing the sizes of the state and control domains is the key objective for improving efficiency. Theoretical justification of the domain reduction idea is provided.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124878835","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
Optimal observation schedule for identification of nonlinear distributed systems with applications 非线性分布式系统辨识的最优观测调度
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522790
S.A. Belbas, M. Sun
{"title":"Optimal observation schedule for identification of nonlinear distributed systems with applications","authors":"S.A. Belbas, M. Sun","doi":"10.1109/SSST.1993.522790","DOIUrl":"https://doi.org/10.1109/SSST.1993.522790","url":null,"abstract":"A system of quasi-variational inequalities (QVIs) of a novel type is obtained for the problem of optimizing the observation schedule for the problem of parameter identification for nonlinear parabolic and hyperbolic systems with pointwise observations. Results on the existence, uniqueness, and iterative approximation of solutions of the resulting QVI systems are presented. These solutions lead to the synthesis of an optimal observation schedule. The problems considered have applications to heat transfer, environmental problems, continuum mechanics, earthquake engineering, and processing of acoustic and seismic signals.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125070582","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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