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2012 International Conference on computer science and Information Processing, CSIP 2012

作者： Xu, Jianbo Wei, Liang Huang, Weihong Jing, Long Liu, Yuanyuan School of Computer Science and Engineering Hunan University of Science and Technology China Department of Electrical Engineering Guangdong Songshan Polytechnic College Shaoguang China

ISBN: (纸本)9781467314114

The application of Vehicle-mounted self-organizing help control system is a promising direction of intelligent transportation. The efficiency and security have greatly improved by information sharing among vehicles through vehicle-mounted self-organizing network, the capability of emergency processing is improved accordingly. Traditional vehicle-mounted help controller usually used analog controlling devices, with many components, large size, expensive price, bad reliability and anti-interference, hard to be controlled by computer. It is hard to meet the popular demands nowadays. In order to solve real-time detection and remote alarm of vehicle-mounted self-organizing system, the controller has integrated sensor technology, embedded technology, GPS and GPRS. A vehicle-mounted self-organizing alarm system is presented and an early warning software system is designed. The experiment shows the system has good sensitivity and high real-time. © 2012 IEEE.

关键词： Vehicles

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Security in the internet of things: A review

Security in the internet of things: A review

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2012 International Conference on computer science and Electronics engineering, ICCSEE 2012

作者： Suo, Hui Wan, Jiafu Zou, Caifeng Liu, Jianqi College of Information Engineering Guangdong Jidian Polytechnic Guangzhou China School of Computer Science and Engineering South China University of Technology Guangzhou China

ISBN: (纸本)9780769546476

In the past decade, internet of things (IoT) has been a focus of research. Security and privacy are the key issues for IoT applications, and still face some enormous challenges. In order to facilitate this emerging domain, we in brief review the research progress of IoT, and pay attention to the security. By means of deeply analyzing the security architecture and features, the security requirements are given. On the basis of these, we discuss the research status of key technologies including encryption mechanism, communication security, protecting sensor data and cryptographic algorithms, and briefly outline the challenges. © 2012 IEEE.

关键词： Internet of things

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Issues and challenges of wireless sensor networks localization in emerging applications

Issues and challenges of wireless sensor networks localizati...

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2012 International Conference on computer science and Electronics engineering, ICCSEE 2012

作者： Suo, Hui Wan, Jiafu Huang, Lian Zou, Caifeng College of Information Engineering Guangdong Jidian Polytechnic Guangzhou China School of Computer Science and Engineering South China University of Technology Guangzhou China

ISBN: (纸本)9780769546476

Wireless sensor networks (WSNs) are widely being used in many environments (e.g., disaster relief and target tracking), and WSNs localization is still a crucial research area because of the new localization requirements for emerging application domains such as cyber-physical systems and cyber-transportation systems (CTS). In this article, we review different node localization approaches, and point out the issues and challenges of WSNs localization in emerging applications. First, the measurement-based techniques are introduced, and the range-free localization that is further classified into proximity-based localization, one-hop localization and multi-hop localization, is deeply analyzed. Then, the method of nonline-of-sight error mitigation is also reviewed. In addition, we give two representative applications (unmanned vehicle with WSNs navigation and CTS) to state the new obstacles for WSNs localization. Finally, the main issues and challenges for improving WSNs localization are outlined in brief. © 2012 IEEE.

关键词： Cyber Physical System

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Simulation modeling of cyber-physical systems exemplified by unmanned vehicles with WSNs navigation

Simulation modeling of cyber-physical systems exemplified by...

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7th International Conference on Embedded and Multimedia Computing, EMC 2012

作者： Zou, Caifeng Wan, Jiafu Chen, Min Li, Di College of Information Engineering Guangdong Jidian Polytechnic Guangzhou China School of Mechanical and Automotive Engineering South China University of Technology Guangzhou China School of Computer Science and Engineering Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9789400750753

Cyber-Physical Systems (CPSs) integrate the virtual cyber world with the real physical world. In order to verify the new theories and methods, a novel CPSs simulation model for unmanned vehicle with Wireless Sensor Networks (WSNs) navigation is designed and developed using TrueTime and Matlab/Simulink. This model contains many computer kernel nodes connected by one wireless network block. The intelligent road and the unmanned vehicle works in close cooperation in the form of CPSs. The simulation results associated with the loss probability of the wireless network and time delay are shown. There are some research issues need to be considered in future. © 2012 Springer science+Business Media.

关键词： Wireless sensor networks

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Research on hybrid access system based on heterogeneous networks

International Journal of Digital Content Technology and its ...

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International Journal of Digital Content technology and its Applications 2012年第17期6卷 455-465页

作者： Zeng, Wenying Huang, Chao Zhao, Yuelong Lai, Xiaoqing Shang, Min Computer Engineering Technical College Guangdong Institute of Science and Technology Zhuhai 519090 China School of Computer Science Guangdong Polytechnic Normal University Guangzhou 510665 China School of Computer Science and Engineering South China University of Technology Guangzhou 510640 China

Along with the development of network communication, digital media technology, multi-networks convergence and integrated business enlarge the ranges of mobile application, and data are produced, transported, stored and coped across heterogeneous networks, such as wired and wireless networks hybrid access. Data access is suffered from heterogeneous platforms and terminals with different ability, etc. It is a challenge how to ensure fair, efficient service. The article proposes hybrid access system model, analyzes data access performance, illustrates hybrid access optimization method to ensure fair and efficiency, and test the access delays and rates of the hybrid access system so as to provide reference to improve system design and optimization access performance.

关键词： Heterogeneous networks

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The DH exponentiation extension in a verification logic of local sessions

The DH exponentiation extension in a verification logic of l...

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2012 IEEE International Conference on computer science and Automation engineering, CSAE 2012

作者： Xiao, Yinyin Su, Kaile Department of Computer Science Guangdong Polytechnic Normal University Guangzhou 510665 China College of Information Science and Technology East Campus Sun Yat-Sen University Guangzhou 510006 China School of Electronics Engineering and Computer Science Peking University Beijing 100871 China

ISBN: (纸本)9781467300865

Diffie-Hellman (DH) symmetric encryption plays an important role in the network security, and the security proof for many protocols relies on the DH assumption. The Logic of Local Sessions (LLS) is a practical security protocol logic. With its automatic tool Security Protocol Verifier (SPV), LLS can verify many interesting properties for complex security protocols. However, It does not discuss the DH key exchange and the related properties. In this paper, we extend the original LLS with DH exponentiation. After revising some primary concepts and definitions, a new theorem called DH-Secrecy Properties is proposed and proved. Avoiding influencing the proof of the former axioms, our extension enlarges the range of applicability of LLS. © 2012 IEEE.

关键词： Formal verification

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Streamlining codesign method for systems with timing uncertainties: A case study of CNC systems

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Advances in Information sciences and Service sciences 2012年第11期4卷 225-232页

作者： Wan, Jiafu Zhang, Chunhua Yan, Hehua Suo, Hui Zou, Caifeng School of Computer Science and Engineering South China University of Technology Guangzhou China School of Mechanical and Automotive Engineering South China University of Technology Guangzhou China College of Electrical Engineering Guangdong Jidian Polytechnic Guangzhou China

Implementation of controllers is always subject to timing uncertainties due to computing limitation, which will deteriorate control performance of a system. Integration from different perspectives is frequently adopted to improve control performance in the literature. A streamlining codesign method is proposed which contains two critical parts: analysis model and the implementation architecture. Based on the former, the effect of timing attributes on control performance is estimated and key timing factors is chosen to manage, which makes the subsequent integration more efficient. In implementation architecture, the network bandwidth and CPU processing power is flexibly deployed. The method is validated with an application to CAN-based CNC systems. The sampling output jitter is the crucial timing factor concerned in the codesign. The scheduler designed regulates the sampling period to maximize the utilization of computing resources, and eventually improve the CNC control performance, which is shown by comparison of contour error in different sampling period.

关键词： Timing circuits

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The representation of high-order features based on kernel function

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Journal of Information and Computational science 2012年第12期9卷 3617-3624页

作者： Wu, Weiwen Wang, Zhiyan Jie, Xiaomeng Liang, Peng Xu, Xiaowei School of Computer Science and Engineer South China University of Technology Guangzhou 510006 China School of Computer Science Guangdong Polytechnic Normal University Guangzhou 510665 China College of Information Science and Engineering Ocean University of China Qingdao 266100 China

In order to solve the computational complexity problem brought by high-order local features, the representation of high-order local features based on kernel function is proposed. At First, the feature space is mapped to the geometric invariant space by comparing local features extracted from two images. Then, we generate high-order local features by establish a kernel function. At last, a multi-target image classification experiment has been conducted through combining with the support vector machine. The experimental results demonstrate that our proposed method improve classification accuracy by 10%. © 2012 Binary Information Press.

关键词： Image classification

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The incremental image classification method based on semi-supervised learning

International Journal of Digital Content Technology and its ...

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International Journal of Digital Content technology and its Applications 2012年第19期6卷 305-314页

作者： Wu, Weiwen Wang, Zhiyan Liang, Peng Xu, Xiaowei School of Computer Science and Engineer South China University of Technology Guangzhou 510006 China School of Computer Science GuangDong Polytechnic Normal University Guangzhou 510665 China College of Information Science and Engineering Ocean University of China Qingdao 266100 China

In order to use large numbers of unlabeled images effectively, this paper proposes an image classification method based on semi-supervised learning. The proposed method bridges a large amount of unlabeled images and limited numbers of labeled images by exploiting the common topics. The classification accuracy is improved by using the must-link constraint and cannot-link constraint of labeled images. The experimental results on Caltech-101 demonstrate the feasibility and stability of proposed method. Furthermore, due to the present semi-supervised image classification methods lacking of incremental learning ability, we propose an incremental implementation of our method. Comparing with non-incremental learning model in literature, the incremental learning method can improve the computation efficiency of nearly 90%.

关键词： Image classification

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A nonreversing FP-tree algorithm mining with frequent closed item sets

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International Review on computers and Software 2012年第2期7卷 822-829页

作者： Wei, Qing Zhao, Jitao Song, Jingjing School of Computer and Information Engineering Henan University of Economics and Law Zhengzhou 450002 Henan China College of Computer Science and Technology Xuchang University Xuchang 164000 Henan China School of information and Science Qingyuan polytechnic Qingyuan 511510 Guangdong China

The frequent closed item set algorithm has shown its important advances by providing a minimal representation of frequent item sets without losing their support information. However, many applications showed that the efficiency of the frequent closed item set algorithm cannot meet requirements, which made it difficult to extend the application range for data. By analyzing the influence factors on the efficiency of frequent closed item set algorithm, a new algorithm -FrecisFP (Frequent Closed Item Sets FP tree) is proposed in this paper. In the improved algorithm, FP tree technology was used, it only generates constrained sub-trees consisting of three small arrays in process of mining, which is a virtual tree structure based on the originally nonreversing FP-tree, so the flaw of former algorithms is avoided. Experimental results showed that the proposed algorithm improved the mining efficiency by reducing the space and time consumption to a great extent. © 2012 Praise Worthy Prize S.r.l. -All rights reserved. -All rights reserved.

关键词： Data mining

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