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6th China Conference of Wireless Sensor networks, CWSN 2012

作者： Li, Peng Wang, Ruchuan Zhou, Yanting Dai, Qiuyu College of Computer Nanjing University of Posts and Telecommunications Nanjing Jiangsu 210003 China Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Nanjing Jiangsu 210003 China Key Lab. of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Jiangsu Province Nanjing Jiangsu 210003 China College of Telecommunications and Information Engineering Nanjing University of Posts and Telecommunications Nanjing Jiangsu 210003 China

ISBN: (纸本)9783642362514

According to the significant impact on the accuracy rate of detection of current immune algorithms brought by incorrect classification of signal, it proposes network malicious code dendritic cell immune algorithm based on fuzzy weighted support vector machine. It summarizes and compares the pros and cons of the four methods, which are basic artificial intelligence immune algorithm, detection of unknown viruses based on immunity theory, malicious code immunity based on cryptography and automated intrusion response based on danger theory. It elab.rates the process of the algorithm of the proposed immune algorithm, discusses a variety of input and output signals, gives the samples of the actual input signals, applies the coefficient of variation method to determine the values of the weights so as to enhance the discrimination ability of signal processing results, describes the principle and algorithm steps of fuzzy weighted support vector machine clustering method within immune algorithm proposed. By comparing the fuzzy aggregation before and after the immunization program experiments, it draws the conclusion that the proposed immune algorithm can optimize the input signal, fuzzy clustering the signal and the antigen, so as to bring down the number of immunization strategies and reduce the immune response time, as a result it improve the efficiency and performance of the immune system. © 2013 Springer-Verlag.

关键词： Cells

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A feedback-based timeout packets dropping strategy in real-time wireless sensor networks

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2nd World Congress on computer Science and information Engineering, CSIE 2011

作者： Shen, Zhuowei Xu, Peng Xu, Xiaoxi Key Lab. of Computer Network and Information Integration Ministry of Education School of Computer Sci. and Eng. Southeast University Nanjing China

ISBN: (纸本)9783642257681

Resource limited real-time wireless sensor network is a new type of application of sensor network. In this kind of networks, there are numerous invalid real-time packets, which have already expired or are destined to expire. In this paper, a feedback-based timeout packet dropping strategy (FBTPD) is proposed. With this strategy, timestamps are piggybacked in real-time packets. So that sink node can gather the historical information and estimate the future transmitting time of some sensor node. Then the estimated transmitting time is fed back to the sensor node in a feedback packet. The sensor node hereby drops the invalid realtime packets which will expire later. Simulation experiments reveal that: compared with other dropping policies, FBTPD can drop more invalid real-time packets, and can significantly improve the throughput of the non real-time packets. Thus FBTPD can efficiently boost the resources utilization in wireless sensor networks, especially in hybrid real-time wireless sensor networks. © Springer-Verlag Berlin Heidelberg 2012.

关键词： Real time systems

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PASS: An adaptive multi-copy routing scheme for intermittently connected mobile Ad Hoc networks

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Journal of Convergence information Technology 2012年第14期7卷 315-323页

作者： Xu, Jia Wang, Ru Chuan Sun, Li Juan College of Computer Nanjing University of Posts and Telecommunications Nanjing China Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Nanjing China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Jiangsu Province Nanjing China Key Laboratory for Computer Network and Information Integration Southeast University Ministry of Education Nanjing China State Key Lab. for Novel Software Technology Nanjing University Nanjing China

Intermittently Connected Mobile Ad Hoc networks (ICMANs) are mobile networks in which complete source-to-destination paths do not exist most of the time. This paper proposed a Predictable Adaptive Seed Spray routing (PASS) for intermittently connected mobile Ad Hoc networks. PASS is a cost-efficient delay-bounded routing protocol without network parameters and provides acceptable and resilient service in the face of challenged environments. Simulations have shown that PASS outperforms existing schemes such as Epidemic, binary spray & wait and AMR with respect to routing cost and adaptability.

关键词： Routing protocols

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Delay constraint adaptive routing based on seed spray in opportunistic networks

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Journal of Computational information Systems 2012年第12期8卷 5137-5148页

作者： Xu, Jia Wang, Ruchuan Sun, Lijuan College of Computer Nanjing University of Posts and Telecommunications Nanjing 210003 China Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Nanjing 210003 China Key Lab. of Broadband Wireless Communication and Sensor Network Technol. Min. of Edu. Jiangsu Prov. Nanjing University of Posts and Telecommunications Nanjing 210003 China Key Laboratory for Computer Network and Information Integration Ministry of Education Southeast University Nanjing 211189 China State Key Lab. for Novel Software Technology Nanjing University Nanjing 210093 China

Opportunistic networks are sparse wireless networks which have no complete path from the source to the destination most of the time. Many applications require the support of delay constrained routing mechanism which can provide acceptable and resilient services in the challenged environments. We proposed Adaptive Seed Spray (ASS) to achieve the delay constraint with low cost in dynamic opportunistic networks. ASS will estimate the routing cost in source node, and use a small number of seed nodes to spray message copies in order to reduce redundant copies. Furthermore, ASS will make spray decisions in relay nodes which have the latest information of the networking conditions. Simulation results have shown that ASS has prominent superiority in routing cost and adaptability, and it is an efficient delay-bounded multi-copy routing protocol for opportunistic networks especially for dynamic conditions. © 2012 Binary information Press.

关键词： Cost benefit analysis

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Robust evidence detection of copy-rotate-move forgery in image based on singular value decomposition

Robust evidence detection of copy-rotate-move forgery in ima...

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14th International Conference on information and Communications Security, ICICS 2012

作者： Yong, Liu Meishan, Huang Bogang, Lin College of Mathematics and Computer Science Fuzhou University Fuzhou 350108 China Key Lab. of Information Security of Network Systems Fuzhou 350108 China

ISBN: (纸本)9783642341281

Region Copy-Move forgery, in which a part of the image is copied and then pasted to another part of the same image. Some important goals and sensitive objects can be hidden imperceptibly;this forgery is at the rather important position in a variety of forensic technology research. But the literatures published merely are confined without geometric distortion. And some algorithms focus on the special forgery's model. In order to improve the accuracy of the current algorithms, a new detection is proposed by constructing the circles rather than the traditional ways which were based on the square. The seven characterizes are constructed according to singular value decomposition. Using main rotation angle based on the radial moment and the proportion of constraint remove the error mark. Finally the dictionary-ordering method is applied to save the time-consuming. The experiment shows that this newly characteristic can locate the area where was tampered. © 2012 Springer-Verlag.

关键词： Singular value decomposition

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A fault-tolerant multicast tree approach based on the family hierarchy tunnel

A fault-tolerant multicast tree approach based on the family...

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16th International Conference on Mechatronics Technology, ICMT 2012

作者： Zhou, Yan-Ling Shen, Yu-Feng Key Lab. of Network and Intelligent Information Processing Department of Computer Science and Technology University Hefei Anhui China Computer Science and Technology Anhui Sanlian University Hefei Anhui China

ISBN: (纸本)9787900769428

Fault-tolerant recovery in Multicast communication is an important issue. An ideal multicast fault-tolerant approach can save network resources, reduce the delay and cost, realize quick recovery. In this paper, we propose a new multicast fault-tolerant approach-FH-TFTM based on proposed multicast fault-tolerant algorithms. It can go over problems faced in traditional approaches, for example node failure, unpredictable problems, time delay, network cost and loop avoidance. FH-TFTM can reduce consuming network resources, and carry out effectively setting up backup paths.

关键词： Recovery

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Efficient (t, n) secret sharing scheme against cheating

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Journal of Computational information Systems 2012年第9期8卷 3815-3821页

作者： Liu, Yanxiao Zhang, Yuqing Hu, Yupu Key Lab. of Computer Networks and Information Security of Ministry of Education Xidian University China National Computer Network Intrusion Protection Center GUCAS China

A (t, n) secret sharing (SS) scheme can be divided into two protocols: share generation protocol and secret reconstruction protocol. In share generation protocol, a mutually trusted dealer selects a secret and distributes shares to shareholders secretly;in secret reconstruction protocol, a group of t qualified shareholders pool their shares together to reconstruct the secret. However, in secret reconstruction protocol, dishonest shareholders (i.e., cheaters) can pool forged shares to fool honest shareholders. By this way, the cheaters can recover the legitimate secret exclusively, and the honest shareholders get nothing but a fake secret. In this paper, we propose a (t, n)SS that is capable of detecting such cheating fact efficiently. Our scheme is an extension of Shamir's (t, n)SS that uses a symmetric bivariate polynomial. In addition, our scheme adopts no security assumption, it is unconditional secure. © 2011 by Binary information Press.

关键词： Shareholders

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QoS-based data aggregation technology in wireless sensor networks

QoS-based data aggregation technology in wireless sensor net...

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2011 WASE Global Conference on Science Engineering, GCSE 2011

作者： Chen, Zhengyu Yang, Geng Li, Guohua Xu, Jian Key Lab. of Broadband Wireless Communication and Sensor Network Technology Ministry of Education College of Computer Science and Technology Nanjing University of Post and Telecommunications Nanjing 210046 China School of Information Technology Jinling Institute of Technology Nanjing 211169 China

ISBN: (纸本)9783037852903

The main goal of data-aggregation algorithms in wireless sensor networks (WSNs) is to gather and aggregate data in an energy efficient manner so that network lifetime is enhanced. In this article, we focus on QoS-based data-aggregation problems in WSNs. Firstly, we provide a definition of the different QoS parameters for data aggregation, such as energy efficiency, network lifetime, data latency and data quality. Then, we compare the different algorithms on each QoS parameter, describe the main features of each algorithm, and highlight the trade-offs between each parameter. Finally, we conclude with possible future research directions on QoS-based data aggregation in WSNs.

关键词： Wireless sensor networks

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Filter-Based information Selection Mechanism in Publish/Subscribe Middleware

Filter-Based Information Selection Mechanism in Publish/Subs...

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2012 3rd International Conference on information Technology for Manufacturing Systems(ITMS 2012)

作者： Jigang Xiao Yunqing Chen Zhuowei Shen Systems Engineering Research Institute China State Shipbuilding Corporation Key Lab of Computer Network and Information Integration MOE School of Computer Science and Engineering Southeast University

Publish/Subscribe middleware is getting more and more attentions for its feature of loose *** some scenarios,Subscribersof a topic need not all the information belonging to that topic, but only those of interest. To fulfill this requirement,some kind of information selection mechanism is needed. In this paper, a filter-based information selection mechanism is proposed, which is compliant with OMG DDS specification. Then it is implemented in a publish/subscribe middleware prototype *** the mechanism, a publish/subscribe middleware can use the compiler generated by Flex&Bison to compile the filtering rules of the users,which are conform to SQL-like syntax,and generate the filtering syntax *** the subscriber side, when receiving a sample, the middleware substitute the values of the sample into the corresponding positions in the filtering syntax tree. By traversing the tree, the middleware makes the filtering decision. Experiment results reveal that the proposed mechanism is effective.

关键词： information Filtering Publish/Subscribe middleware Data Distribution Service Filter

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An efficient two-stage level set segmentation framework for overlapping plant leaf image

An efficient two-stage level set segmentation framework for ...

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8th International Conference on Intelligent Computing Technology, ICIC 2012

作者： Wang, Xiao-Feng Min, Hai Key Lab. of Network and Intelligent Information Processing Department of Computer Science and Technology Hefei University Hefei Anhui 230022 China Intelligent Computing Lab. Hefei Institute of Intelligent Machines Chinese Academy of Sciences P.O.Box 1130 Hefei Anhui 230031 China Department of Automation University of Science and Technology of China Hefei Anhui 230027 China

ISBN: (纸本)9783642315879

In this paper, an efficient two-stage segmentation framework was proposed to address the plant leaf image with overlapping phenomenon, which is built based on the leaf approximate symmetry and level set evolution theory. In the pre-segmentation stage, a straight line was manually set on the target leaf to approximate the principal leaf vein and the Local Chan-Vese (LCV) model was used on the global image region to help searching the so-called un-overlapping contour in target leaf. In the formal segmentation stage, the symmetry detection was performed based on the pre-defined approximated principal vein to obtain the narrow-band evolution region and the second initial contour. Next, the LCV model was once again used to find the complete target leaf contour in the narrow-band evolution region. Finally, experiments on some real leaf images with overlapping phenomenon have demonstrated the efficiency and robustness of the proposed segmentation framework. © 2012 Springer-Verlag.

关键词： Image segmentation

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