Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.最新文献

{"title":"Application of artificial neural networks modelling to spray impingement heat transfer","authors":"M.M. Awais, M. A. Aamir, A. Aamir","doi":"10.1109/INMIC.2001.995352","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995352","url":null,"abstract":"Artificial neural networks (ANN) models were developed and applied to water spray cooling heat flux predictions. The model was applied to all the three regimes of heat transfer, namely nucleate boiling (where surface temperature is less than the one at critical heat flux), transition (where the surface temperature is less than the Leidenfrost temperature) and the film boiling (where the wall temperature is greater than the Leidenfrost temperature). The ANN model is well trained and proves to be an alternative numerical modelling technique to computational fluid dynamics (CFD) with numerical predictions comparable to the CFD predictions, but in real time mode.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116553561","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":"Buffer design of nonblocking ATM switch for bursty traffic","authors":"Azhar A. Rizvi, Arshad Hussain","doi":"10.1109/INMIC.2001.995318","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995318","url":null,"abstract":"In any practical ATM switch design, a proper dimensioning of buffer size B can guarantee, a specified cell loss percentage requirement, for given traffic type. A 4/spl times/4 ATM switch with parallel iterative matching scheduling algorithm has been simulated to study the effect of input buffer size on mean cell delay through the switch and cell loss percentage in the switch. Arriving traffic on all input ports is taken to be bursty in nature with a given average burst length. Mean cell delay and cell loss percentage for various input buffer sizes were obtained as the output of simulations. Analytical models for these quantities have been developed to aid in the buffer design for the practical ATM switch.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"41 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132767388","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":"Urdu computing standards: Urdu Zabta Takhti (UZT) 1.01","authors":"S. Hussain, M. Afzal","doi":"10.1109/INMIC.2001.995341","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995341","url":null,"abstract":"Software development in Urdu has been going on for more than three decades. However, until recently there were no industry standards for coding in Urdu, similar to ASCII standard for English. Keeping in view the necessity and urgency of standardization needs, three years ago a national effort was initiated to get relevant people together and formulate a common standard for everybody to follow. This paper discusses the contents and related specifications of Urdu Zabta Takhti 1.01 in detail. The discussion is divided into subsections on logical groups of characters that form this takhti, Urdu text file format and how sorting may be done in Urdu with UZT.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132993666","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":"Parameter adjustment in the turn rate models in the interacting multiple model algorithm to track a maneuvering target","authors":"A. Munir, J.A. Mirza, A.Q. Khan","doi":"10.1109/INMIC.2001.995348","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995348","url":null,"abstract":"The paper compares the performance of two different configurations of the interacting multiple model (IMM) algorithm in tracking a civil aircraft. The first configuration of the IMM algorithm uses one straight line motion model and different constant turn rate models whereas the other configuration also employs a straight line motion model and a single turn rate model which uses an estimate of the turn rate. In the first algorithm, results have been obtained using different process noise values and different numbers of models. From these results, recommendations are made regarding the choice of both these variable parameters.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126914655","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":"Recent advancements of optical interferometry applied to medicine","authors":"M. M. Gualini, W.A. Kha, W. Sixt, H. Steinbichler","doi":"10.1109/INMIC.2001.995338","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995338","url":null,"abstract":"Nonetheless the large diffusion of laser excimer ablative procedures to correct vision problems by corneal surgery (PTK, PRK, LASIX) still there are problems to achieve the targeted correction (TC) in every treated eye. We have registered and published cases of reduced TC, attributing the problem to the fact that excimer laser devices are not flexible enough to adapt to the intrinsic characteristics of each cornea. The latest generation of excimer lasers enables personalizing the procedures combining laser beam-scanning with optical methods of acquiring in real time the corneal map using wave front analysis techniques. None the less we feel this is not a complete solution to the problem, since the elasticity of the corneal tissue should be also taken into account. Corneal tissue elasticity is related to the infra ocular pressure (IOP), age and other factors and shows aging effects also. Observing our records of more than 2500 cornea surgeries we believe that corneal tissue elasticity has an essential role in the achievement of TC. In order to demonstrate this assumption we developed some experiments aiming also to define mathematical model that can enable simulating the cornea behavior during and after excimer laser ablation surgery. We have firstly investigated the possibilities of mapping the cornea surface with a modified Twymann-Green interferometer (TGI). Experiments were carried on a bovine cornea at rest and under a static stress. Then we hive determined experimentally the resonant frequency of the same bovine cornea. Finally we have investigated the behavior of the same bovine cornea applying at force vibrating at resonance frequency. The corneal surface deformation was detected in real time using for the first time worldwide PulsESPI, a laser device that enables real time deformation analysis exploiting electronic speckle pattern interferometry (ESPI). This approach may enable defining a quite reliable simulation model of the cornea based on its geometry and its elastic factors. We suggest using finite element method (FEM) to analyze the corneal surfaces deformed statically and at resonance condition in order to determine elasticity coefficients to be adopted in a proposed preliminary model.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128390490","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":"Exploring multiple levels of parallelism using BOPS' DSP","authors":"W. Latif, A. Shahid, F. Saud, S. Ali, S.A. Khan","doi":"10.1109/INMIC.2001.995334","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995334","url":null,"abstract":"A study of high performance, reusable and scalable DSP architecture of BOPS, which targets specific applications, is carried out. The degree of parallelism supported by the BOPS' ManArray architecture and its usability is tested on various algorithmic building blocks along with the more complex and irregular algorithm of the G.729a vocoder, a key requirement of VoIP gateway DSP engine. An analysis to reduce complexity as well as implementation of G.729a on an array processor using various optimization techniques is presented.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130924595","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":"Investigation of multirate techniques for digital generation of transmitter signals for TIGER radar","authors":"T. Salim, J. Devlin, J. Whittington","doi":"10.1109/INMIC.2001.995308","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995308","url":null,"abstract":"Research has been carried out on possible methods for the digital generation of signals for the TIGER (Tasman International Geospace Environment Radar) transmitter. Simulation results have shown that the polyphase network provide better performance compared to an FIR filter. The lower sampling rate of polyphase filters make them good candidates for applications with high throughput requirements. Implementation of an FIR filter is addressed with a technique which is less sensitive to hardware utilization. A hardware prototype has been constructed using an Altera Flex 10k20 device. Results demonstrate the feasibility of using FPGA devices for the complete implementation of a digital TIGER transmitter.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124283680","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":"Numerical simulation of Black-Scholes model for American options","authors":"A. Khaliq, D. Voss, S. Kazmi","doi":"10.1109/INMIC.2001.995325","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995325","url":null,"abstract":"We consider the penalty method approach, and corresponding numerical schemes, for solving the Black-Scholes model of the American Option. Standard methods involve the need to solve a system of nonlinear equations, evolving from the finite difference discretization of the nonlinear Black-Scholes model, at each time step by a Newton-type iterative procedure. We analyze the well-known linearly implicit /spl theta/-methods that arise by treating the nonlinear penalty term explicitly thus avoiding iteration. In addition, we have implemented an adaptive time step control strategy to increase computational efficiency.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115859994","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":"Development of digital certification authority in Pakistan","authors":"Muhammad Razeen, Javaid Iqbal Zahid, S. Shamail, H. Babri","doi":"10.1109/INMIC.2001.995344","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995344","url":null,"abstract":"Currently, the framework for e-commerce is at very early stages in Pakistan. As soon as full e-commerce starts in Pakistan, network security services will need to be provided to businesses and consumers. Digital signature certificates enable anonymous users to trust each other using public key infrastructure (PKI). Certification Authorities (CAs) like VeriSign/sup TM/ build PKI and do certificate management. Buying security services or products from these CAs will cost a lot of money to businesses in Pakistan. This paper explores the idea of developing and regulating CAs in Pakistan so that as soon as e-commerce is started, there is a technical and legal framework available for their working.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134461549","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":"Narrowband interference suppression techniques in direct sequence spread spectrum communication system","authors":"A. Syed, A.A. Rizvi","doi":"10.1109/INMIC.2001.995333","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995333","url":null,"abstract":"The presence of a spread signal in the suppression of narrowband interference process leads to nonlinear filtering which is usually too complex to implement in real time systems. In this paper, we propose a feedback directed Kalman filter receiver that efficiently detects and suppresses the incoming narrowband interference prior to spread signal detection. The filter uses a real time estimate of spread spectrum signal therefore the computation is reduced substantially as compared to conventional receivers. Further, the real time estimate of the spread signal is more accurate as it uses the knowledge of processing gain of the spread signal.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121662403","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}