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14th European Signal Processing Conference, EUSIPCO 2006

作者： Onel, Tolga Ersoy, Cem Deliç, Hakan Network Research Laboratory Department of Computer Engineering Boǧaziçi University Bebek 34342 Istanbul Turkey Wireless Communications Laboratory Department of Electrical and Electronics Engineering Boǧaziçi University Bebek 34342 Istanbul Turkey

An energy-efficient collaborative target tracking paradigm is developed for wireless sensor networks (WSNs). The network lifetime is prolonged by selecting a subset of sensors that are informative and provide non-redundant data so that a desired accuracy level is maintained. A distributed data fusion architecture provides the collaborative tracking framework. A mutual information-based sensor selection algorithm (MISS) is adopted for participation in the fusion process. MISS allows the most informative subset of the sensors to transmit data so that in the energy consumption is reduced while the desired accuracies of the target position estimation are preserved. Simulation results that demonstrate the performance improvement offered by the MISS algorithm are also furnished.

关键词： Wireless sensor networks

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Urban search and rescue with canine augmentation technology

Urban search and rescue with canine augmentation technology

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IEEE/SMC International Conference on System of Systems engineering

作者： Ferworn, Alexander Sadeghian, Alireza Barnum, Kevin Rahnama, Hossein Pham, Huy Erickson, Carl Ostrom, Devin Dell'Agnese, Lucia Network-Centric Applied Research Team Department of Computer Science Ryerson University Canada Provincial Emergency Response Team Ontario Provincial Police Canada Department of Mechanical Engineering Ryerson University Canada Department of Fashion Ryerson University Canada

ISBN: (纸本)9781424401871

The agility, sense of smell, hearing and speed of dogs is put to good use by dedicated canine teams involved in Search and Rescue operations. Perhaps the weakest link in the human-dog team is the human. In comparison to dogs, humans hear less, cannot effectively follow a scent and actually slow the dog down when involved in area searches. To mitigate this problem the network-Centric Applied Research Team has been working with the Ontario Provincial Police to augment SAR dogs with a suite of supporting technologies to extend the dog's potential area of operation and allow a greater distance between dog and handler. Through Canine Augmentation Technology we hope to allow, canine handlers to see what the dog sees, hear what the dog hears, know where the dog is and be able to communicate with the dog at extended distances.

关键词： Search and Rescue SAR USAR canine augmentation technology

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Building lightweight intrusion detection system based on random forest

Building lightweight intrusion detection system based on ran...

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3rd International Symposium on Neural networks, ISNN 2006 - Advances in Neural networks

作者： Kim, Dong Seong Lee, Sang Min Park, Jong Sou Network Security Lab. Computer Engineering Department Hankuk Aviation University 200-1 Hwajeon-dong Goyang-city Gyeonggi-do 412-791 Korea Republic of

ISBN: (纸本)3540344829

This paper proposes a new approach to build lightweight Intrusion Detection System (IDS) based on Random Forest (RF). RF is a special kind of ensemble learning techniques and it turns out to perform very well compared to other classification algorithms such as Support Vector Machines (SVM) and Artificial Neural networks (ANN). In addition, RF produces a measure of importance of feature variables. Our approach is able not only to show high detection rates but also to figure out stable output of important features simultaneously. The results of experiments on KDD 1999 intrusion detection dataset indicate the feasibility of our approach. © Springer-Verlag Berlin Heidelberg 2006.

关键词： Learning systems

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Composition of a DIDS by integrating heterogeneous IDSs on grids

Composition of a DIDS by integrating heterogeneous IDSs on g...

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4th International Workshop on Middleware for Grid Computing (MGC'06) held at the ACM/IFIP/USENIX International Middleware Conference

作者： Silva, Paulo F. Westphall, Carlos B. Westphall, Carla M. Assunçao, Marcos D. Network and Management Laboratory Department of Computer Science and Statistics Federal University of Santa Catarina Florianópolis Brazil Department of Computer Science and Software Engineering Grid Computing and Distributed Systems Laboratory University of Melbourne Vic. 3053 Australia

This paper considers the composition of a DIDS (Distributed Intrusion Detection System) by integrating heterogeneous IDSs (Intrusion Detection Systems). A Grid middleware is used for this integration. In addition, an ... 详细信息

ISBN: (纸本)1595935819

关键词： Grid computing

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High Speed Routing Lookup IC Design for IPv6

High Speed Routing Lookup IC Design for IPv6

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Proceedings of 2006 IEEE International Symposium on Circuits and Systems,Volume 4

作者： Yuan-Sun Chu Hui-Kai Su Po-Feng Lin Ming-Jen Chen Computer Network Laboratory Department of Electrical Engineering National Chung Engineering University Chiayi Taiwan

With the growth of Internet users and services, the IP address has been exhausted. In order to solve this problem, the short term solution was presented, i.e., CIDR (Classless Inter-Domain Routing). The long term solution for insufficient IP addresses is the IPv6 protocol which was defined by IETF (Internet engineering Task Force)'. The length of IPv6 address is 128 bits that can avoid the IP address exhaustion. In this paper, a complete hardware for IPv6 routing lookup architecture is proposed. It is composed of routing lookup ASIC and memory set. In our system, the simple hash hardware is used to reduce the lookup time, and the CAM (Content Addressable Memory) is used to solve the collision problem effectively. In our performance analysis, 91.89% routing entries of the routing table can be searched in one memory access, and the worst case about 10% needs two memory accesses. The CAM in the ASIC is used as cache memory with FIFO replacement algorithm. The routing lookup system approaches 213.4Mlps (109.26Gb/s). It is enough to satisfy the high speed link OC-768 (40Gb/s) with 150000 routing entries.

关键词： Routing High speed integrated circuits Hardware Application specific integrated circuits computer aided manufacturing CADCAM Web and internet services Protocols Associative memory Performance analysis

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A hydrate database: Vital to the technical community

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Data Science Journal 2007年第SPEC. ISS.期6卷 GH1-GH5页

作者： Sloan, D. Kuznetsov, F. Lal, K. Loewner, R. Makogon, Y. Moridis, G. Ripmeester, J. Royer, Jean-Jacques Smith, T. Tohidi, B. Uchida, T. Wang, J. Wang, W. Xiao, Y. Center for Hydrate Research Colorado School of Mines Golden CO 80401 United States Institute of Inorganic Chemistry Siberian Branch Russian Academy of Sciences 3 Lavrentiev Pr. Novosibirsk 630090 Russia National Physical Laboratory Dr. K. S. Krishnan Road New Delhi 110012 India GeoForschungsZentrum Telegrafenberg Potsdam D-14473 Germany Department of Petroleum Engineering Texas A and M University College Station TX 77843 United States Lawrence Berkeley National Laboratory ESD 90-1116 University of California 1 Cyclotron Road Berkeley CA 92720 United States Steacie Institute National Research Council Ottawa Ont. K1A OR6 Canada Ecole Nationale Supérieure de Géologie I.N.P.L./C.R.P.G./E.N.S.G. Computer Science Department rue du Doyen Marcel Roubault 54501 Vandoeuvre-les-Nancy France MITSystems 565 Plandome Road #294 Flushing NY 11367-1597 United States Institute of Petroleum Engineering Heriot-Watt University Edinburgh EH14 4AS United Kingdom Department of Applied Physics Hokkaido University N13W8 Kita-ku Sapporo 060-8628 Japan Computer Network Information Center Chinese Academy of Science 4 4th South Street Zhong guan cun Beijing 10080 China

Natural gas hydrates may contain more energy than all the combined other fossil fuels, causing hydrates to be a potentially vital aspect of both energy and climate change. This article is an overview of the motivation, history, and future of hydrate data management using a CODATA vehicle to connect international hydrate databases. The basis is an introduction to the Gas Hydrate Markup Language (GHML) to connect various hydrate databases. The accompanying four articles on laboratory hydrate data by Smith et al., on field hydrate data by Löwner et al., on hydrate modeling by Wang et al., and on construction of a Chinese gas hydrate system by Xiao et al. provide details of GHML in their respective areas.

关键词： Database systems

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Improvement of CORBA audio/vided streaming service

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Jisuanji Gongcheng/computer engineering 2006年第5期32卷 207-209+228页

作者： Chu, Zi Feng, Mingzheng Dai, Jiangpeng Department of Computer Science and Engineering Southeast University Nanjing 210096 China Key Laboratory for Computer Network and Information Integration Nanjing 210096 China

The paper makes two contributions to the study of A/V streaming service: (1) introduces a service management mechanism for monitoring and controlling resource utilities to enhance quality of service guarantees;(2) improves the security of A/V streaming service and reduces the complexity of encryption computations by applying CORBA security services in conjunction of the wavelet compression and encryption technology for multimedia data. An improved CORBA A/V streaming service prototype is implemented based on ORBUS which is a real-time CORBA ORB, and its application in networked manufacturing system is also discussed.

关键词： CORBA Multimedia QoS Security services Streaming

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Enhancing duplicate collection detection through replica boundary discovery

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10th Pacific-Asia Conference on Advances in Knowledge Discovery and Data Mining, PAKDD 2006

作者： Zhang, Zhigang Jia, Weijia Li, Xiaoming Department of Computer Science City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong Institute of Network Computing and Information Systems School of Electronics Engineering and Computer Science Peking University Beijing China

ISBN: (纸本)3540332065

Web documents are widely replicated on the Internet. These replicated documents bring potential problems to Web based information systems. So replica detection on the Web is an indispensable task. The challenge is to find these duplicated collections from a very large data set with limited hardware resources in acceptable time. In this paper, we first introduce the notion of replica boundary to roughly reflect the situation of the replicas;then we propose an effective and efficient approach to discover the boundary of the replicas. The advantages of the proposed approach include: first, it dramatically reduces pair-wise document similarity computation, making it much faster than traditional replicated document detection approaches;second, it can identify the boundary of the replicated collections accurately, demonstrating to what extent two collections are replicated. On two web page sets containing 24 million and 30 million Web pages respectively, we evaluated the accuracy of the approach. © Springer-Verlag Berlin Heidelberg 2006.

关键词： Websites

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An admission control algorithm for multi-hop 802.11e based WLANs 06

An admission control algorithm for multi-hop 802.11e based W...

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3rd International Conference on Quality of Service in Heterogeneous Wired/Wireless networks

作者： Lin, Yuxia Wong, Vincent W. S. Cheung, Michael Department of Electrical and Computer Engineering University of British Columbia Vancouver BC Canada Network Management Technology Group Cisco Systems Inc. San Jose CA United States

ISBN: (纸本)1595935371

Recently, wireless local area network (WLAN) hotspots have been deployed in many areas (e.g., cafes, airports, university campuses). The new IEEE 802.11e standard further provides quality of service (QoS) provisioning by grouping the applications (or traffic) into four different access categories. The coverage area of WLANs can be extended by allowing the neighboring mobile devices to relay data to the access points. This concept is known as multi-hop WLANs. Due to the limited network capacity and the contention-based channel access mechanism, admission control is required to regulate the number of simultaneous flows to maintain QoS. The multi-hop extension of WLANs present further challenges for admission control design due to the location-dependent contention in the network. In this paper, we propose an admission control algorithm for multi-hop 802.11e WLANs. The admission control algorithm first constructs the network's contention graph to break down the network contention situation into areas comprised of maximal cliques. Then, the admission decision is made by analyzing the available capacity of each maximal clique with 802.11e saturation throughput analysis. Simulation results show that our proposed algorithm is effective in providing QoS guarantee to the existing voice and video flows while maintaining a good performance for best effort traffic. © 2006 ACM.

关键词： Wireless local area networks (WLAN)

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Non-saturated throughput analysis of IEEE 802.11 ad hoc networks

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IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS 2006年第5期E89D卷 1676-1678页

作者： Xu, Changchun Yang, Zongkai Department of Electronics and Information Huazhong University of Science and Technology China Computer Network Center Naval University of Engineering China

This letter presents a simple but accurate analytical model to evaluate the throughput of IEEE 802.11 distributed coordination function in non-saturated conditions. The influence of offered load on the throughput of both basic and RTS/CTS access mechanisms are analyzed and compared. It's shown that basic access scheme can achieve the same maximal throughput as that of RTS/CTS mechanism in non-saturated conditions while the latter is robust to the number of contending stations compared to basic mechanism. The analytical results are validated by extensive simulations.

关键词： IEEE 802.11 ad hoc networks non-saturated throughput Markov chain

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