{"title":"Analysis of stripline and waveguide discontinuities as a 2D-problem using finite difference-time domain method","authors":"A. Kishk, Andrei Goumileski","doi":"10.1109/SECON.2000.845578","DOIUrl":"https://doi.org/10.1109/SECON.2000.845578","url":null,"abstract":"A class of two dimensional (2D) problems is considered. This class is usually analyzed as three dimensional (3D) problems. The finite difference-time domain (FDTD) method is used to analyze the problem of transverse magnetic (TM) polarization. The number of unknowns is reduced from six unknowns in the 3D case to only three unknowns in the 2D case. Reducing the number of unknowns reduced the CPU time and reduces the storage requirements. Several examples are presented for stripline, microstrip circuits, and waveguide structures to show the simplicity versatility of the technique for analyzing practical problems as 2D-problems. The solution is verified by comparing our results with published results.","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":"129683323","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":"Java based graphical user interface for Livingston","authors":"Weimin Zhang, S. Devgan","doi":"10.1109/SECON.2000.845468","DOIUrl":"https://doi.org/10.1109/SECON.2000.845468","url":null,"abstract":"The Livingston Application program is designed to monitor and diagnose control operations of the Mars Space Station. Livingston is special software developed by NASA, which uses a model based programming language. The output generated by Livingston is textural. However, graphical means of viewing modular outputs would greatly simplify the monitoring and diagnosing of such complex models. The Circuit Breaker (CB) model, using Livingston application, was provided by NASA and consists of 15 CBs connected to 8 LEDs, which simulates the above control operations. In order to graphically display this control system and dynamically update this graphical user interface (GUI), Java technologies have been implemented. This GUI is very effective in diagnosing, monitoring and understanding of these control operations.","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":"128578491","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}
Z. Bingul, A. Sekmen, S. Palaniappan, S. Zein-Sabatto
{"title":"Genetic algorithms applied to real time multiobjective optimization problems","authors":"Z. Bingul, A. Sekmen, S. Palaniappan, S. Zein-Sabatto","doi":"10.1109/SECON.2000.845432","DOIUrl":"https://doi.org/10.1109/SECON.2000.845432","url":null,"abstract":"Genetic algorithms (GAs) are often well-suited for multi-objective optimization problems. In this work, multiple objectives pertaining to the THUNDER software (a very large military campaign simulation model) were used to optimize the war results obtained from the software. It is a stochastic, two-sided, analytical Monte-Carlo simulation of military operations. The simulation is subject to internal unknown noises. Due to these noises and to the discreteness in the simulation program, a GA approach has been applied to this multi-objective optimization problem. This method is capable of searching for multiple solutions concurrently in a single run. Transforming this problem to a form that is suitable for the direct implementation of GA was the major challenge that was achieved. Three different kinds of fitness assignment methods were implemented, and the best one was chosen. The THUNDER software may be considered as a black box, since very little information about its internal dynamics was known. The problem with the THUNDER software is its expensive running time. In order to optimize the time involved with the THUNDER software, autocorrelation techniques were used to reduce the number of THUNDER runs. Furthermore, the GA parameters were set optimally to yield smoother and faster fitness convergence. From these results, the GA was shown to perform well for this multi-objective optimization problem and was effectively able to allocate force power for the THUNDER software.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"39 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":"128267183","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":"Scope of digital systems increase with in system reprogrammability","authors":"S. Wunnava, A. Rodreguiez","doi":"10.1109/SECON.2000.845466","DOIUrl":"https://doi.org/10.1109/SECON.2000.845466","url":null,"abstract":"Present day digital system designs are getting to be predominantly software driven. In a typical system life, there will always be revisions, upgrades, and design modifications. Conventionally, the systems have to be sent back to the vendors for upgrading, or new systems have to be bought. However, with the scope of in system reprogrammability (ISR), it is possible to reprogram the system hardware from a remote location. The upgraded design code can be remotely sent to the units to be upgraded using the in system re-programmable interface (ISR) modules. Such a capability will greatly enhance the modification of the systems on line and also cut down the costs and lead times involved in system enhancements. In this article, the authors discuss the architecture of the ISR modules and present the case studies of the ISR based digital system designs. The article also explores the ISR system capabilities and the potential of developing truly modular and expandable digital system designs such as universal serial and parallel interface systems, microcontrollers etc. What could be the need of converting a parallel port into serial and vice versa? The fast answer would be to reach longer distance with less wires. The authors have chosen this dynamic conversion to introduce the capabilities of the complex programmable logic devices (CPLDs), and the field programmable gate arrays (FPGAs), which are the modern devices for programmable digital system designs.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"100 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":"129104963","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":"Optimal design of thermoelectric generator","authors":"H. Javan","doi":"10.1109/SECON.2000.845590","DOIUrl":"https://doi.org/10.1109/SECON.2000.845590","url":null,"abstract":"Thermoelectric generators have been the topic of research among the NASA scientists in order to develop high efficiency thermoelectric generators. This article suggests an innovative method of preparing semiconductor material to obtain high thermoelectric power. It is shown that material with lower Fermi energy yields a higher thermoelectric coefficient. An analytical expression is derived, discussed, and compared with the work of other researchers.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"23 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":"115054123","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":"Uniform formal modeling of human and non-human agents using CSP and VDM","authors":"Kevin Mosley, A. Esterline","doi":"10.1109/SECON.2000.845606","DOIUrl":"https://doi.org/10.1109/SECON.2000.845606","url":null,"abstract":"The paper focuses on human computer integration and the modeling of agent systems using CSP and the VDM specification language. In order to accomplish goals, agents in a given environment must adhere to the societal rules (norms) associated with that environment. The commitment rules governing a society of agents ensures that goals are accomplished and tasks are performed in an orderly fashion and limits the possibility of rogue agents.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"88 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":"116723810","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":"Customer relationship management in e-commerce: the call center solution","authors":"K. Ohaegbu, S. Devgan","doi":"10.1109/SECON.2000.845599","DOIUrl":"https://doi.org/10.1109/SECON.2000.845599","url":null,"abstract":"E-commerce is not just the transaction, it is also the customer service. The advent of interactive e-commerce has without doubt made buying and selling on the Web successful. However, it continues to lack the quality of personal contact with the customer, which is essential in building and sustaining customer relationships on the Internet. \"Real-time\" text communication currently used by some companies lacks the voice and video combination that is needed to fill this communication gap. According to Forrester Research, only 16% of web users actually read the web page word by word. 67% of on-line consumers follow it to the order page but do not complete a transaction. In response to this problem, this research entails developing a software interface that will enable a Web customer to click and talk to a sales representative in real-time and also see the picture and the profile of the sales representative. In this research, a web user initiates a WebClick (live representative) request, that passes through the Internet and the Web server notifies our server of an incoming call. The server in turn notifies the sales representative's computer by generating a \"Web pop\" showing the particular page the customer was browsing at the time the call was initiated. The sales representative can now speak with the web user or route the call to another sales representative. This research was limited to voice only.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"186 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":"121614309","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":"Frequency correlation analysis for periodic echoes","authors":"Lexun Huang, Kevin D. Donohue","doi":"10.1109/SECON.2000.845447","DOIUrl":"https://doi.org/10.1109/SECON.2000.845447","url":null,"abstract":"This paper presents a multiplicative model for a class of nonstationary signals, referred to as cyclostationary, along with a frequency correlation (FC) analysis particularly suited for such signals. Signals of this class can be found in the ultrasonic imaging of certain materials and signals used in communication systems. This paper applies an FC analysis to detect the mean scatterer spacing of a sequence of quasi-periodic scatterers with random scatterer strengths. Mathematical derivations and numerical experiments are presented to demonstrate the utility and feasibility of BC methods for analyzing signals created by the multiplication of random processes. The results show that FC methods can outperform simple power spectral density and the cepstral methods in analyzing cyclostationary signals.","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":"129854273","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":"Novel multidimensional dynamic super high speed communication in functional media","authors":"A.K. Gupta","doi":"10.1109/SECON.2000.845617","DOIUrl":"https://doi.org/10.1109/SECON.2000.845617","url":null,"abstract":"This paper analyzes a super high speed communication system, consisting of multidimensional white noise transmission through novel multidimensional optimal GAMMA media and reversible (unlimited and limited) receiver. It is shown that, in order to achieve variable limit speed, a chemical transmission theory is needed to unify various concepts of chaotic, propagation, optimal and differential equations based media synthesis. It is further shown that data synthesis techniques are applicable to media synthesis and vice versa in variable limit communication feasibility.","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":"129882444","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":"Transform domain technique: robust watermarking for digital images","authors":"S. Suthaharan, S. Sathananthan","doi":"10.1109/SECON.2000.845602","DOIUrl":"https://doi.org/10.1109/SECON.2000.845602","url":null,"abstract":"A digital image watermarking technique that is based on the human visual system (HVS) characteristics and the statistical behavior of the edge structures is presented. In this technique the watermark is generated using (i) human visual system parameters so that the watermark does not alter the perceived quality (transparency requirement) of a watermarked image and (ii) a sequence of random numbers generated from a bounded normal distribution so that the technique is robust to malicious attacks. The watermarking technique inserts the watermark into the perceptually most significant discrete cosine transform (DCT) coefficients so that the technique is (i) robust to image processing operations (such as image compression), (ii) robust to malicious watermark attacks and (iii) perceptually invisible.","PeriodicalId":206022,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)","volume":"60 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":"129500112","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}