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IEEE International Conference on Communications (ICC)

作者： S. Li S. A. Khayam A.-R. Sadeghi R. Schmitz Department of Computer and Information Science University of Konstanz Germany School of Electrical Engineering and Computer Science (SEECS) NUST Islamabad Pakistan System Security Group Ruhr University of Bochum Germany Department of Computer Science and Media Stuttgart Media University Germany

In ICC2008 and subsequent work, Lei et al. proposed a user authentication system (virtual password system), which is claimed to be secure against identity theft attacks, including phishing, keylogging and shoulder surfing. Their authentication system is a challenge-response protocol based on a randomized linear generation function, which uses a random integer in the responses of each login session to offer security against assorted attacks. In this paper we show that their virtual password system is insecure and vulnerable to multiple attacks. We show that with high probability an attacker can recover an equivalent password with only two (or a few more) observed login sessions. We also give a brief survey of the related work and discuss the main challenges in designing user authentication methods secure against identity theft.

关键词： Authentication computer science Random media Pins Communications Society Peer to peer computing Information science computer security Information security Protocols

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An uncapacitated facility location based cluster hierarchy scheme on wireless sensor networks

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WSEAS Transactions on Communications 2010年第11期9卷 740-757页

作者： Li, I-Hui Liao, I-En Wu, Feng-Nien Department of Computer Science and Engineering National Chung Hsing University Taiwan Department of Information Networking and System Administration Ling Tung University Taiwan Foxconn Technology Group Taiwan

Cluster-Head (CH) nodes function as gateways between the sensors and the Base Station, in Wireless Sensor Networks with a cluster hierarchy. The total energy dissipation of the sensors can be reduced by optimizing the load balance within the cluster hierarchy. This paper proposes an uncapacitated facility location based cluster scheme in which the system lifetime is extended by adding an additional layer of SuperCluster-Head (SCH) nodes, in order to ease the transmission load of the CHs and to balance the load distribution within the network. The SCH layer is configured using an uncapacitated facility location algorithm in which the facility and service costs are defined in terms of both the energy and the transmission distance. The simulation results confirm that the proposed method yields a better load balance in the SCH layer than that obtained using either a random configuration or a round-robin scheme. Finally, it is shown that irrespective of the size of the sensor field, the proposed scheme outperforms the conventional LEACH-C two-layer scheme in terms of the average energy dissipation of the nodes, the average survival times of the nodes, and the overall system lifetime.

关键词： Energy dissipation

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Study of emergency resource distribution based on ant colony algorithm

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ICIC Express Letters 2010年第3期4卷 751-756页

作者： Zhang, Hailong Li, Xiongfei Dong, Liyan Ren, Xiangshi Guo, Jlanfang Department of Computer Science and Technology Jilin University Changchun 130012 China Department of Information System Engineering Kochi University of Technology Tosayamada-cho Kochi 782-8502 Japan

A mathematical model is established, centered on time efficiency andimproved, Ant Colony Algorithm. Ant Colony Algorithm, is used, to solve theemergency resources distribution problem, and, several aspects of the algorithm,are improved such as path selection strategy, pheromone update strategy, and,local search strategy. Improved Ant Colony Algorithm, can converge to the globaloptimal solution quickly, avoiding getting the local optimal solution tooearly. The experimental results prove that the model can help to distribute theemergency resources efficiently and provide valuable supports fordecision-makers. ICIC International © 2010.

关键词： Ant colony optimization

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Dynamic Multiple Pattern Detection Algorithm

Dynamic Multiple Pattern Detection Algorithm

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International Conference on computer and Network Technology (ICCNT)

作者： Chouvalit Khancome Veera Boonjing Software System Engineering Laboratory Department of Mathematics and Computer Science King Mongkut''s Institute of Technology Ladkrabang Bangkok Thailand

ISBN: (纸本)9781424469611

The multiple pattern matching has always been a significant principle for applying to a network security system. This principle is adapted to accommodate the target patterns to be detected in a pre-processing phase, and the objective text and the suspect patterns are simultaneously detected by comparing with the existing structure. This research article introduces a new algorithm of multi-string pattern matching by means of a new data structure called inverted lists. The inverted lists structure, inherited from the inverted index, is represented by the positions of characters which appear in the patterns. The new algorithm, which is more efficient time than the traditional algorithms, scans the given text in a single pass. More importantly, the structure of patterns is able to update the patterns over time.

关键词： Detection algorithms Pattern matching Intrusion detection Data structures Software systems systems engineering and theory Laboratories Mathematics computer science Phase detection

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An efficient multicast scheme in the Nested NEMO

An efficient multicast scheme in the Nested NEMO

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International Symposium on computer Communication Control and Automation (3CA)

作者： Shr-Shiuan Tzeng Hsiao-Chen Kuo Long-Sheng Li Yong-Yu Yang Department of Computer Science and Information Engineering National Chiayi University Taiwan Department of Management Information System Far East University South Korea

ISBN: (纸本)9781424455652

Sharing communications are not easy to do in the mobility networks (MONETs) for the limited bandwidth and the overhead of tunneling. Multicast is an intuitive method to solve this problem. To improve the performance, the multicast topology should be redesigned for the MONETs. We proposed an efficient communication algorithm with multicast schemes in a network mobility (NEMO) environment. The Mobile Router Forwarding Scheme (MRFS) algorithm is proposed for this goal. We can find that MRFS can reduce the storage cost for every Mobile Router (MR) especially in the TLMR (Top level MR).

关键词： Mobile communication Multicast protocols Web and internet services Unicast Bandwidth Topology Broadcasting Tunneling Multicast algorithms IP networks

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Local energy management system: Control scheme and loads modeling

Local energy management system: Control scheme and loads mod...

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Mediterranean Conference on Control and Automation (MED)

作者： L. Pimpinella A. Di Giorgio A. Mercurio Computer Science and System Department A. Ruberti Sapienza University of Rome Italy Department of Electronic Engineering Federico II University of Naples Italy

In this work we present a general control scheme for the management of an energy community and a load modeling approach. We adopt a multilevel control scheme in which the first level computes the energy consumption set point towards the second level and the generation planning towards the energy sources, the second level is in charge of local loads scheduling and micro-generation planning.

关键词： Home appliances Energy consumption Power demand Load modeling Suspensions Energy management Planning

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Sensor network scheduling algorithm considering estimation error variance and communication energy

Sensor network scheduling algorithm considering estimation e...

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IEEE Conference on Control Technology and Applications (CCTA)

作者： Takashi Takeda Toru Namerikawa Division of Electrical Engineering and Computer Science Graduate School of Natural Science and Technology Kanazawa University Kanazawa Japan Department of System Design Engineering Keio University Yokohama Japan

This paper deals with a sensor scheduling algorithm considering estimation error variance and communication energy in sensor networked feedback systems. We propose a novel decentralized estimation algorithm with unknown inputs in each sensor node. Most existing works deal with the sensor network systems as sensing systems and it is difficult to apply them to the real physical feedback control systems Then some local estimates are merged and the merged estimates can be optimized in the proposed method and the estimation error covariance has a unique positive definite solution under some assumptions. Next, we propose a novel sensor scheduling algorithm in which each sensor node transmits information. A sensor node uses energy by communication between other sensor node or the plant. The proposed algorithm achieves a sub-optimal network topology with minimum energy and a desired variance. Experimental results show an effectiveness of the proposed method.

关键词： Network topology Estimation error Equations Covariance matrix Scheduling algorithm Silicon

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Proposal and evaluation for wireless sensor network which use terminal that eliminated receiver circuit

Proposal and evaluation for wireless sensor network which us...

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2nd International Conference on Ubiquitous and Future Networks, ICUFN 2010

作者： Nose, Hiroaki Bao, Miao Niimura, Masaaki Fuwa, Yasushi Mizuta, Kazumasa Yoshikawa, Yasushi Kunimune, Hisayoshi Department of Computer and System Engineering Nagano Prefectural Institute of Technology Ueda-shi Japan Graduate School of Science and Technology Shinshu University Nagano-shi Japan Epson Toyocom Corporation Hino-shi Japan Seiko Epson Corporation Suwa-shi Japan Faculty of Engineering Shinshu University Nagano-shi Japan

ISBN: (纸本)9781424480883

Sensor network terminals are installed in large numbers in the field and transmit data periodically by radio. Such terminals must be miniaturized, and save power so that each device can operate by battery for several years. As one way to satisfy these two conditions, in this research we propose a terminal design which eliminates the receiver circuit. Because there is no receiver circuit, circuitry can be miniaturized, and power can be saved because there is no need to consume power to receive signals. However, the terminals cannot perform carrier detection and reception acknowledgement because there is no receiver circuit. We propose following two new protocols to solve this problem. © 2010 IEEE.

关键词： Sensor nodes

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Towards assertion-based verification of heterogeneous system designs 10

Towards assertion-based verification of heterogeneous system...

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Design, Automation and Test in Europe Conference and Exhibition

作者： Stefan Lammermann Jurgen Ruf Thomas Kropf Wolfgang Rosenstiel Alexander Viehl Alexander Jesser Lars Hedrich Department of Computer Engineering University of Tubingen Tubingen Germany Microelectronic System Design FZI Forschungszentrum Informatik Karlsruhe Germany Department of Computer Science University of Frankfurt Frankfurt Germany

ISBN: (纸本)9783981080162

In this paper a comprehensive assertion-based verification methodology for the digital, analog and software domain of heterogeneous systems is presented. The proposed methodology combines a novel mixed-signal assertion language and the corresponding automatic verification algorithm. The algorithm translates the heterogeneous temporal properties into observer automata for a semi-formal verification. This enables automatic verification of complex heterogeneous properties that can not be verified by existing approaches. The experimental results show the integration of mixed-signal assertions into a simulation environment and demonstrate the broad applicability and the high value of the evolved solution.

关键词： Automata Central Processing Unit Temperature sensors Microprogramming Frequency synthesizers Digital systems computerized monitoring Formal specifications Logic Design engineering

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On the computation of the minimal siphons of S4PR nets from a generating family of siphons

On the computation of the minimal siphons of S4PR nets from ...

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International Conference on Emerging Technologies and Factory Automation (ETFA)

作者： Elia E. Cano Carlos A. Rovetto José-Manuel Colom Department of Computer Science and System Engineering University of Zaragoza Spain Aragón Institute of Research Engineering(I3A) University of Zaragoza Spain

Minimal siphons in the class of S 4 PR nets have become a conceptual and practical central tool to deal with deadlocks caused by the sharing of resources in Flexible Manufacturing systems. The availability of efficient algorithms to compute these structural objects is very important. In this paper we take advantage from the particular properties of the siphons in S 4 PR to obtain an efficient algorithm. These properties allow to compute the minimal siphons from a generating family of minimal siphons. This family is composed by the minimal siphons containing only one resource. The computation of the minimal siphons is based in the maximal strongly connected components of a graph representing the relations between the siphons of the generating family. The algorithm is very economic in memory in all intermediate steps with respect to the classical algorithms.

关键词： Production Labeling system recovery Availability Flexible manufacturing systems Robots Petri nets

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