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2009 Second International Conference on Computer and Electrical Engineering最新文献

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A High-Efficiency, Ripple-Control Buck Converter with Mode-Hop Enhancement 具有模式跳增强的高效纹波控制降压变换器
2009 Second International Conference on Computer and Electrical Engineering Pub Date : 2009-12-28 DOI: 10.1109/ICCEE.2009.76
Ehsan Rokhsat-Yazdi, A. Afzali-Kusha
{"title":"A High-Efficiency, Ripple-Control Buck Converter with Mode-Hop Enhancement","authors":"Ehsan Rokhsat-Yazdi, A. Afzali-Kusha","doi":"10.1109/ICCEE.2009.76","DOIUrl":"https://doi.org/10.1109/ICCEE.2009.76","url":null,"abstract":"In this paper, a simple yet efficient auto mode-hop ripple control structure for buck converters with light load operation enhancement is proposed. The converter, which operates under a wide range of input and output voltages, makes use of a state-dependent hysteretic comparator. Depending on the output current, the converter automatically changes the operating mode. This improves the efficiency and reduces the output voltage ripple for a wide range of output currents for given input and output voltages. The sensitivity of the output voltage to the circuit elements is less than 14%, which is seven times lower than that for conventional converters","PeriodicalId":343870,"journal":{"name":"2009 Second International Conference on Computer and Electrical Engineering","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133209054","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
Genetic Algorithm and MS Solver for Portfolio Optimization under Exogenous Influence 外生影响下投资组合优化的遗传算法和MS求解器
2009 Second International Conference on Computer and Electrical Engineering Pub Date : 2009-12-28 DOI: 10.1109/ICCEE.2009.173
Roshan Shaikh, A. Abbas
{"title":"Genetic Algorithm and MS Solver for Portfolio Optimization under Exogenous Influence","authors":"Roshan Shaikh, A. Abbas","doi":"10.1109/ICCEE.2009.173","DOIUrl":"https://doi.org/10.1109/ICCEE.2009.173","url":null,"abstract":"This study comprises of the Genetic Algorithm (GA) approach to optimize a constrained portfolio for maximum return with an acceptable risk for Karachi Stock Exchange (KSE) assets. The portfolio selection model used in this paper is based on the classical Markowitz mean-variance theory enhanced with exogenous influence of floor and ceiling. The results are compared with MS Excel Solver (Solver). It is found that the model works well under the influence of a high probability of local minima.","PeriodicalId":343870,"journal":{"name":"2009 Second International Conference on Computer and Electrical Engineering","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122441244","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
GLS Optimization Algorithm for Solving Travelling Salesman Problem 求解旅行商问题的GLS优化算法
2009 Second International Conference on Computer and Electrical Engineering Pub Date : 2009-12-28 DOI: 10.1109/ICCEE.2009.102
Nourolhoda Alemi Neissi, M. Mazloom
{"title":"GLS Optimization Algorithm for Solving Travelling Salesman Problem","authors":"Nourolhoda Alemi Neissi, M. Mazloom","doi":"10.1109/ICCEE.2009.102","DOIUrl":"https://doi.org/10.1109/ICCEE.2009.102","url":null,"abstract":"Travelling salesman problem (TSP) is well known as one of the combinatorial optimization problems. There are many approaches for finding solution to the TSP. In this paper we used combination of local search heuristics and genetic algorithm (GLS) that has been shown to be an efficient algorithm for finding near optimal to the TSP. We also evaluate the run time behavior and fitness of our approach and compare it with other methods. A reasonable result is obtained and the proposed algorithm is able to get to a better solution in less time.","PeriodicalId":343870,"journal":{"name":"2009 Second International Conference on Computer and Electrical Engineering","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117133379","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
Pathology of Organizations Currently Implementing ITIL in Developing Countries 发展中国家目前实施ITIL的组织病理学
2009 Second International Conference on Computer and Electrical Engineering Pub Date : 2009-12-28 DOI: 10.1109/ICCEE.2009.260
S. Ghayekhloo, M. Sedighi, R. Nassiri, G. L. Shabgahi, H. K. Tirkolaei
{"title":"Pathology of Organizations Currently Implementing ITIL in Developing Countries","authors":"S. Ghayekhloo, M. Sedighi, R. Nassiri, G. L. Shabgahi, H. K. Tirkolaei","doi":"10.1109/ICCEE.2009.260","DOIUrl":"https://doi.org/10.1109/ICCEE.2009.260","url":null,"abstract":"IT service management has become both more sophisticated and more critical to the business. we are now in an era in which an IT failure or error can interrupt critical business processes, severely damages a corporation 's image, affects the bottom line, and even impacts a company 's stock valuation. As far as organizations become more reliant on technology, the need for reliable, well managed services continues to increase. With this increased demand on IT performance, IT needs a well-defined process to ensure that IT operations are maintained at optimal levels. In this paper, we aim to scrutinize a few critical factors which may put the successful deployment of ITIL in risk for a few Iranian entities as a sample of developing countries.","PeriodicalId":343870,"journal":{"name":"2009 Second International Conference on Computer and Electrical Engineering","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114162936","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: 8
Surge control of natural gas centrifugal compressor 天然气离心式压缩机喘振控制
2009 Second International Conference on Computer and Electrical Engineering Pub Date : 2009-12-28 DOI: 10.1109/ICCEE.2009.112
D. Mudroncík, P. Tanuška, Martin Galik
{"title":"Surge control of natural gas centrifugal compressor","authors":"D. Mudroncík, P. Tanuška, Martin Galik","doi":"10.1109/ICCEE.2009.112","DOIUrl":"https://doi.org/10.1109/ICCEE.2009.112","url":null,"abstract":"The paper presents the design of control system for centrifugal compressor surge avoidance. The presented solution of the surge problem is illustrated on an example of real application.","PeriodicalId":343870,"journal":{"name":"2009 Second International Conference on Computer and Electrical Engineering","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115009263","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
Speaker Recognition Method Based on Phone N-gram Pruning and KPCA 基于电话n图剪枝和KPCA的说话人识别方法
2009 Second International Conference on Computer and Electrical Engineering Pub Date : 2009-12-28 DOI: 10.1109/ICCEE.2009.21
Hongge Yao, Wu Guo
{"title":"Speaker Recognition Method Based on Phone N-gram Pruning and KPCA","authors":"Hongge Yao, Wu Guo","doi":"10.1109/ICCEE.2009.21","DOIUrl":"https://doi.org/10.1109/ICCEE.2009.21","url":null,"abstract":"In order to solve the problem of disturbance due to data sparsity for the baseline phone n-gram system, a method based on Phone N-gram pruning and KPCA is brought forward. The phone n-gram with low probability is firstly pruned in the phone n-gram super vector. The kernel principal component analysis (KPCA) is then adopted to remove the bias which is brought about due to data sparse. When applying this method to the NIST 2006 speaker recognition evaluation (SRE) database, experimental results shows that a relative reduction of up to 29% in Error Equal Ratio (EER) is achieved over the previous baseline phone n-gram system.","PeriodicalId":343870,"journal":{"name":"2009 Second International Conference on Computer and Electrical Engineering","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115673103","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
Parallelizing Motion JPEG 2000 with CUDA 并行运动JPEG 2000与CUDA
2009 Second International Conference on Computer and Electrical Engineering Pub Date : 2009-12-28 DOI: 10.1109/ICCEE.2009.277
S. Datla, Naga Sathish Gidijala
{"title":"Parallelizing Motion JPEG 2000 with CUDA","authors":"S. Datla, Naga Sathish Gidijala","doi":"10.1109/ICCEE.2009.277","DOIUrl":"https://doi.org/10.1109/ICCEE.2009.277","url":null,"abstract":"Due to the rapid growth of Graphics Processing Unit (GPU) processing capability, using GPU as a coprocessor for assisting the CPU in computing massive data has become indispensable. Nvidia’s CUDA general-purpose graphical processing unit (GPGPU) architecture can greatly benefit single instruction multiple thread (SIMT) styled, computationally expensive programs. Video encoding, to an extent, is an excellent example of such an application which can see impressive performance gains from CUDA optimization. This paper details the experience of porting the motion JPEG 2000 reference encoder to the CUDA architecture. Each major structural/computational unit of JPEG 2000 is discussed in the CUDA framework and the results are provided wherever required. Our experimental results demonstrate that the CUDA based implementation works 20.7 times faster than the original implementation on the CPU.","PeriodicalId":343870,"journal":{"name":"2009 Second International Conference on Computer and Electrical Engineering","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124165793","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: 17
Power Amplifiers Linearization Based on Digital Predistortion with Memory Effects 基于记忆效应的数字预失真功率放大器线性化
2009 Second International Conference on Computer and Electrical Engineering Pub Date : 2009-12-28 DOI: 10.1109/ICCEE.2009.141
A. Barahimi, S. Mirzakuchaki, Saeid Karami
{"title":"Power Amplifiers Linearization Based on Digital Predistortion with Memory Effects","authors":"A. Barahimi, S. Mirzakuchaki, Saeid Karami","doi":"10.1109/ICCEE.2009.141","DOIUrl":"https://doi.org/10.1109/ICCEE.2009.141","url":null,"abstract":"Power amplifiers require linearization in order to reduce adjacent inter-modulation distortion without losing efficiency. Digital predistortion is a cost effective method to achieve this goal and it needs an accurate model of the amplifier. Most of the amplifier models are based on memoryless modeling. This kind of modeling is simple but it’s not accurate enough if linearization is important; and also for wide band modulations like QAM, we should consider the memory effects of power amplifiers.","PeriodicalId":343870,"journal":{"name":"2009 Second International Conference on Computer and Electrical Engineering","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124744701","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 Novel Text Steganography System Using Font Color of the Invisible Characters in Microsoft Word Documents 一种利用Microsoft Word文档中不可见字符字体颜色的文本隐写系统
2009 Second International Conference on Computer and Electrical Engineering Pub Date : 2009-12-28 DOI: 10.1109/ICCEE.2009.127
Md. Khairullah
{"title":"A Novel Text Steganography System Using Font Color of the Invisible Characters in Microsoft Word Documents","authors":"Md. Khairullah","doi":"10.1109/ICCEE.2009.127","DOIUrl":"https://doi.org/10.1109/ICCEE.2009.127","url":null,"abstract":"Steganography can be defined as a method of hiding data within a cover media so that other individuals fail to realize their existence. Image, audio and video are some popular media for steganography. But text is ideal for steganography due to its ubiquity and smaller size compared to these media. However, text communication channels do not necessarily provide sufficient redundancy for covert communication. In this paper, a new approach for steganography in Microsoft Word documents is proposed. The main idea is that setting any foreground color for invisible characters such as the space or the carriage return is not reflected or viewed in the document.","PeriodicalId":343870,"journal":{"name":"2009 Second International Conference on Computer and Electrical Engineering","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124822691","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: 40
Lightweight and Serverless RFID Authentication and Search Protocol 轻量级无服务器RFID认证和搜索协议
2009 Second International Conference on Computer and Electrical Engineering Pub Date : 2009-12-28 DOI: 10.1109/ICCEE.2009.159
Luon-Chang Lin, Shih-Chang Tsaur, Kai-Ping Chang
{"title":"Lightweight and Serverless RFID Authentication and Search Protocol","authors":"Luon-Chang Lin, Shih-Chang Tsaur, Kai-Ping Chang","doi":"10.1109/ICCEE.2009.159","DOIUrl":"https://doi.org/10.1109/ICCEE.2009.159","url":null,"abstract":"We propose a new serverless RFID protocol for authentication. Our scheme not only retains the original security agreement but also reduce the operations and increase the efficiency of the implementation. We also propose a RFID tag search protocol which is a new concept that we believe this tag search will be the future trend. This protocol has a better execution efficiency in comparison with other protocols.","PeriodicalId":343870,"journal":{"name":"2009 Second International Conference on Computer and Electrical Engineering","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121617965","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: 20
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