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A Novel Scheme Of Vertical Handover For IP Multimedia Subsystem

A Novel Scheme Of Vertical Handover For IP Multimedia Subsys...

引用

The 2nd IEEE International Conference on Advanced computer Control(第二届先进计算机控制国际会议 ICACC 2010)

作者： Yi Jiang Guan-nan Kou Yu-liang Tang Dept.of Computer Science Xiamen University Xiamen FujianChina Dept.of Communication Engineering Xiamen University Xiamen FujianChina

ISBN: (纸本)9781424458455;9781424458486;9781424458479;9781424458462

In order to achieve seamless handover for real-time applications in the IP Multimedia Subsystem (IMS) of the next-generation network,a multi-protocol combined handover mechanism is *** this work,we combine SIP (Session Initiation Protocol),FMIP (Fast Mobile IPv6 Protocol) and MIH (Media Independent Handover) protocols by cross-layer design and optimize these protocols' signaling flows to improve vertical handover *** analysis and simulation result illustrate that our proposed mechanism is 1better than the original SIP and MIH combination handover mechanism in service interrupt time and packets loss aspects.

关键词： Vertical handover MIH IMS FMIP NS2

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A Novel Scheme of Webpage Information Hiding Based on Attributes

A Novel Scheme of Webpage Information Hiding Based on Attrib...

引用

2010 IEEE International Conference on Information Theory and Information Security(2010 IEEE 国际信息论与信息安全会议)

作者： Dongsheng Shen Hong Zhao Dept.of Computer Science and Engineering Zhangzhou Normal University Zhangzhou Fujian 363000 China

Webpage based information hiding technology uses a webpage as the cover object. The research of this area has led to several different techniques, which can be broadly classified into embedding invisible characters based, switching the uppercase-lowercase states of letters in tag based, and altering the order of attributes based. Based on the attributes order, a scheme of information hiding is presented in this paper, which overcomes the drawback of the ability of imperceptibility and robustness of the traditional webpage information hiding algorithms. In the proposed scheme, a map between the set of all permutations of n-attributes and the set of all (n-1)-bit binary string is established first, then the embedding and extracting processes are achieved according to this map. The experimental results and analysis show that the proposed scheme dose not lengthen the size of the coverwebpage, and has better imperceptibility, more robust, and more perfect security than the traditional algorithms. The embedded capacity of the proposed scheme is large enough to embed specified secret data. So the proposed scheme can be used to protect the content of the webpage and covert communication.

关键词： HTML Security Switches Robustness Web pages Sun

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Embedded Vision-based Nighttime Driver Assistance System

Embedded Vision-based Nighttime Driver Assistance System

引用

2010 International Symposium on computer,Communication, Control and Automation

作者： Yen-Lin Chen Chuan-Yen Chiang Dept.of Computer Science and Information Engineering National Taipei Univ.of Tech Department of Computer Science National Chiao Tung University

ISBN: (纸本)9781424455652

This study presents an effective method for detecting vehicles in front of the camera-assisted car during nighttime driving and implements it on an embedded *** proposed method detects vehicles based on detecting and locating vehicle headlights and taillights using techniques of image segmentation and pattern ***,to effectively extract bright objects of interest,a segmentation process based on automatic multilevel thresholding applied on the grabbed road-scene *** the extracted bright objects are processed by to identify the vehicles by locating and analyzing their vehicle light patterns and to estimate their distances to the cameraassisted car by a rule-based ***,we also implement the above vision-based techniques on a real-time system mounted in the host *** proposed vision-based techniques are integrated and implemented on an ARMLinux embedded platform,as well as the peripheral devices,including image grabbing devices,voice reporting module,and other in-vehicle control devices,will be also integrated to accomplish an in-vehicle embedded vision-based nighttime driver assistance system.

关键词： vehicle detection driver assistance nighttime driving embedded systems embedded software.

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A parallelization of interactive physical simulations

A parallelization of interactive physical simulations

引用

The 2010 International Conference on computer Application and System Modeling(2010计算机应用与系统建模国际会议 ICCASM 2010)

作者： Xin Liu Quanyu Wang Dept.of Computer Science and Engineering Beijing Institute of Technology Beijng P.R.China 100089

ISBN: (纸本)9781424472352

This paper presents a parallelization method for the computation of interactive physical simulations. In the method, physical simulation tasks are split into multiple sets of tasks using a space partitioning algorithm. Each task set is assigned to a working thread running on a multicore processor. In order to achieve dynamic workload balancing, a work stealing algorithm is used to allowing idle threads steal tasks form heavily loaded threads. The experiments show that workload is well balanced among threads and a significant speedup has been achieved due to the parallelization. P

关键词： physical simulation interactive parallelization

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A Study of Face Recognition using the PCA and Error Back-Propagation

A Study of Face Recognition using the PCA and Error Back-Pro...

引用

2010 Second International Conference on Intelligent Human-Machine Systems and Cybernetics(第二届智能人机系统与控制论国际学术会议 IHMSC 2010)

作者： Jong-Min Kim Myung-A Kang Computer Science and Statistic Graduate School Chosun University GwangJu Korea Dept.of Computer Engineering GwangJu University GwangJu Korea

In this paper the real-time face region was detected by suggesting the rectangular feature-based classifier and the robust detection algorithm that satisfied the efficiency of computation and detection performance was suggested. By using the detected face region as a recognition input image, in this paper the face recognition method combined with PCA and the multi-layer network which is one of the intelligent classification was suggested and its performance was evaluated. As a preprocessing algorithm of input face image, this method computes the eigenface through PCA and expresses the training images with it as a fundamental vector. Each image takes the set of weights for the fundamental vector as a feature vector and it reduces the dimension of image at the same time, and then the face recognition is performed by inputting the multi-layer neural network. As a result of comparing with existing methods, Euclidean and Mahananobis method, the suggested method showed the improved recognition performance with the incorrect matching or matching failure. In addition, by studying the changes of recognition rate according to the learning rate in various environments, the most optimum value of learning rate was calculated.

关键词： Component Principal Component Analysis(PCA) Multi-Layer Neural Networks(MLNN)

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Adaptive Error Control Mechanism Based on Link Layer Frame Importance Valuation for Wireless Multimedia Sensor Networks

Adaptive Error Control Mechanism Based on Link Layer Frame I...

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The 2nd IEEE International Conference on Advanced computer Control(第二届先进计算机控制国际会议 ICACC 2010)

作者： Yong Jin Kaijian Xia Deguang Le Guangwei Bai School of Computer Science & Engineering Changshu Institute of Technology Changshu China Dept.of Computer Science & Technology Nanjing Univ.of Technology Nanjing China

ISBN: (纸本)9781424458455;9781424458486;9781424458479;9781424458462

Wireless multimedia sensor networks (WMSNs) are a new and emerging type of wireless sensor networks (WSNs),which enable applications of multimedia captured through special sensors equipped with cameras or microphones ***,WMSNs face the challenges of transport reliability and energy *** this paper,we propose an adaptive error control mechanism based on the importance of link-layer frame (AEC-LLFIV).The mathematical analysis shows that our AEC-LLFIV achieves better performance compared with Forward Error Correction (FEQ,Automatic Repeat Request (ARQ) and Chase combing Hybrid ARQ (HARQ),in terms of communication reliability and energy efficiency in WMSNs.

关键词： Wireless Multimedia Sensor Networks (WMSNs) Adaptive Error Control (AEC) Link Layer Frame Importance Valuation (LLFIV)

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A dynamic path control method applying traffic-prediction-based route pre-prioritization

A dynamic path control method applying traffic-prediction-ba...

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Asia Communications and Photonics Conference and Exhibition(2010亚洲光纤通信与光弹博览会及研讨会 ACP 2010)

作者： Hiroaki Ohno Hiroshi Hasegawa Ken-ichi Sato Dept.Of Electrical Engineering Computer Science Nagoya University Furo-cho Chikusa-ku 464-8603 Japan

We propose a dynamic RWA method for optical path networks that pre-computes route candidates to attain better load-balancing. Numerical experiments elucidate that the proposed method can accommodate 1.3-1.8 times more... 详细信息

ISBN: (纸本)9780819485571

关键词： Optical fast circuit switching Dynamic network control Routing and Wavelength Assignment

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An Empirical Study on Parallel Multi-objective Genetic Algorithms:0/1 Knapsack Problem-A Case Study

An Empirical Study on Parallel Multi-objective Genetic Algor...

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2010 The 3rd International Conference on Computational Intelligence and Industrial Application (PACIIA2010)

作者： B.S.P.Mishra A.K.Addy S.Dehuri S.-B.Cho Dept.of Computer Science and Engineering KIIT UniversityBhubaneswar-751024OrissaINDIA. Soft Computing Laboratory Dept.of Computer Science Yonsei University262 SeongsannoSeodaemun-guSeoul 120-749South Korea. Soft Computing Laboratory Dept.of Computer Science Yonsei University262 SeongsannoSeodaemun-guSeoul 120-749South Korea

Many of the optimization problems in the real world are multi-objective in nature,and NSGA II is commonly used. Frequently,the multi-objective problems present a high complexity,so classical meta-heuristic algorithms fail to solve them in a reasonable amount of time. In this context,parallelism is a choice to overcome this fact to some extent. In this paper we study three different models i.e. trigger model,island model and cone separation model to parallelize NSGA-II,by considering 0/1 knapsack problem as a case study. Further we emphasize on two factors that scale the parallelism i.e.,convergence and time. The experimental results conform that cone separation model is better than other two models in terms of processing time and approximation to true Pareto front.

关键词： MOGA, Parallel MOGA, NSGA-II, 0/1 Knapsack problem.

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Ring Connecting Node Architecture Employing Variable Filter

Ring Connecting Node Architecture Employing Variable Filter

引用

Asia Communications and Photonics Conference and Exhibition(2010亚洲光纤通信与光弹博览会及研讨会 ACP 2010)

作者： Takaaki Oono Kiyo Ishii Hiroshi Hasegawa Ken-ichi Sato Dept.Of Electrical Engineering and Computer Science Nagoya University Furo-cho Chikusa-ku Nagoya 464-8603 Japan

ISBN: (纸本)9780819485564

We propose a simple node architecture that is used to concatenate two ROADM rings. The proposed architecture employs variable filters that can effectively handle classified node input signals to realize the desired routing operations. Finally, we developed a prototype system and performed transmission experiments. The technical feasibility has been confirmes.

关键词： Bit error rate Liquid crystal on silicon Network topology Reconfigurable optical add drop multiplexers Ring networks Wavelength selective switches

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Computation of Renameable Horn Backdoors for Quantified Boolean Formulas

Computation of Renameable Horn Backdoors for Quantified Bool...

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The 2010 2nd International Conference on Future computer and Communication(第二届未来计算机与通信国际会议 ICFCC 2010)

作者： Jun-Cheng Yang Shu-Xia Li Jin-Yan Wang Dept.of Computer Engineering Henan Polytechnic Institute Nanyang 473009 China School of Computer Science Northeast Normal University Changchun 130117 China

ISBN: (纸本)9781424458219;9781424458240

Backdoor sets of SAT problem can quickly decide the satisfiability of real-world SAT instances, and the QBF problem is the generalization of SAT problem, so backdoor sets of QBF are crucial to its solution. We propose a new algorithm of computing QHorn deletion backdoor sets in this paper, which contains two stages. Firstly, we compute renamed QBF formula according to the largest renamable Rm>1 of matrix of QBF formula, here only existent variables are renamed. Then the RQHorn deletion backdoor sets of the renamed QBF formula are computed. Furthermore, we illustrate the advantages of our algorithm through several real-world QBF instances.

关键词： component propositional satisfiability problem quantified boolean formula renamable Horn clause backdoor sets

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