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IEEE International Symposium on Dependable, Autonomic and Secure Computing (DASC)

作者： N. Xiong Yanxiang He Yan Yang Laurence T. Yang Chao Peng The State Key Laboratory of Software Engineering Computer School of Wuhan University China School of Information Science Japan Advanced Institute of Science and Technology Japan Department of Computer Science Saint Francis Xavier University Antigonish Canada

With the increase of multicast data applications, research interests have focused on the design of congestion control schemes for multicast communications. This paper describes a novel control-theoretic multicast congestion control scheme, which is based on the distributed self-tuning proportional plus integrative (SPI) controller. The control parameters can be designed to ensure the stability of the control loop in terms of source rate. The distributed explicit rate SPI overcomes the vulnerability that suffers from the heterogeneous multicast receivers. It is suggested that the congestion controller is located at the multipoint-to-multipoint multicast source to regulate the transmission rate. We further analyze the theoretical aspects of the proposed algorithm, and show how the control mechanism can be used to design a controller to support multicast transmissions. Simulation results demonstrate the efficiency of the proposed scheme in terms of system stability and fast response of the buffer occupancy, as well as controlled sending rates, low packet loss, and high scalability

关键词： Communication system control Feedback Communication system traffic control Multicast algorithms Multicast protocols Multicast communication Proportional control Traffic control Stability Algorithm design and analysis

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Narrowband audio hiding algorithm based on human auditory system

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Beijing Youdian Daxue Xuebao/Journal of Beijing University of Posts and Telecommunications 2006年第SUPPL. 2期29卷 101-104+121页

作者： Yuan, Kai-Guo Yang, Ya-Tao Zhang, Ru Niu, Xin-Xin Yang, Yi-Xian Information Security Center Beijing University of Posts and Telecommunications Beijing 100876 China State Key Laboratory of Switching and Networking Beijing University of Posts and Telecommunications Beijing 100876 China Department of Communication Engineering Beijing Electronic Science and Technology Institute Beijing 100070 China

After studying about human auditory system and narrowband communications system model, a narrowband audio hiding algorithm based on human auditory system was presented. A lot of experiments proved that the algorithm had strong robustness to prevent many attacks from such as D/A, A/D, channel noise and so on. In time domain, frequency domain, especially for hearing, it had high transparence. What's more, the algorithm, whose hiding capacity reached up to 20 bit/s, had intelligent blind detection property and can be used in many domains.

关键词： Audio systems

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Effective Acquisition of Geospatial Data Products in a Collaborative Grid Environment

Effective Acquisition of Geospatial Data Products in a Colla...

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IEEE International Conference on Services Computing (SCC)

作者： Yaxing Wei Peng Yue Upendra Dadi Min Min Chengfang Hu Liping Di Department of Computer Science University of Science and Technology Hefei Anhui China Center for Spatial Information Science and Systems (CSISS) George Mason University Greenbelt MD USA State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing Wuhan University of China Wuhan China

Geospatial data is playing an increasingly important role in many areas. But there are still many problems associated with the effective use of geospatial data. One is that geospatial data is usually large in volume and is archived at geographically distributed data centers. Another is that the low-level geospatial data contains raw data instead of information that can be directly applied by users. In this paper, we discuss solutions to some of the problems based on the grid and SOA technologies. Specifically, we propose an architecture that can effectively manage large volumes of distributed geospatial data, the concept of virtual geospatial data products, and a mechanism that supports on-demand productions of customized geospatial data products. A prototypical system based on the architecture and concept has been implemented and demonstrated

关键词： Collaboration Service oriented architecture Production Resource management Earth Monitoring Spatial resolution Grid computing information science Satellites

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Anomaly detection model based on dynamic behavior and character patterns

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Jisuanji Xuebao/Chinese Journal of computers 2006年第9期29卷 1553-1560页

作者： Lin, Guo-Yuan Guo, Shan-Qing Huang, Hao Cao, Tian-Jie State Key Laboratory for Novel Software Technology Department of Computer Science and Technology Nanjing University Nanjing 210093 China School of Computer China University of Mining and Technology Xuzhou 221008 China State Key Laboratory of Information Security Institute of Software Chinese Academy of Sciences Beijing 100080 China

Differing from existed anomaly detection methods which only dealt with the frequencies of system calls or local variation, the paper puts forward a model named DBCPIDS. It took in both dynamic behavior and character patterns of programs. In this model, the authors defined the short sequence of system calls as a character pattern if this sequence satisfied the certain support degree, and propose an improved HMM (IHMM) on this basis. When detecting intrusions, firstly, we would judge whether the program trace is matched character patterns. If not, then the authors would use IHMM to detect. The model can not only reflect the global character of the program normal traces, but also pay much attention to the local warp in the execution. The experiments results show that the authors can get higher detection rate and lower false positive rate with DBCPIDS.

关键词： Inspection

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A method to integrate, assess and characterize the protein-protein interactions

A method to integrate, assess and characterize the protein-p...

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IEEE Symposium on Computational Intelligence and Bioinformatics and Computational Biology (CIBCB)

作者： Fa Zhang Lin Xu Jingchun Chen Zhiyong Liu Bo Yuan Key Laboratory of Computer System and architecture the Institute of Computing Technology Chinese Academy and Sciences China Graduate School Chinese Academy and Sciences China Department of Biomedical Informatics Ohio State Uinversity USA National Natural Science Foundation China

Recently, large-scale protein-protein interactions were recovered using the similar two-hybrid system for the model systems. This information allows us to investigate the protein interaction network from a systematic point of view. However, experimentally determined interactions are susceptible to errors. A previous assessment estimated that only ~10% of the interactions can be supported by more than one independent experiment, and about half of the interactions may be false positives. These false positives might unnecessarily link unrelated proteins, resulting in huge apparent interaction clusters, which complicate elucidation for the biological importance of these interactions. Address this problem, we present an approach to integrate, assess and characterize all available protein-protein interactions in model organisms yeast and fly. We first integrate all available protein-protein interaction databases of yeast and fly, and merge all the datasets. We then use machine learning techniques to score the reliability for each interaction, and to rigorously validate the scoring scheme of yeast protein-protein interactions from different aspects. Our results show that this scoring scheme provides a good basis for selecting reliable protein-protein interaction dataset

关键词： Proteins Fungi Databases Electronics packaging Machine learning Genetics Laboratories Biomedical computing computer architecture Biomedical informatics

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A Quantum Reinforcement Learning Method for Repeated Game Theory

A Quantum Reinforcement Learning Method for Repeated Game Th...

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International Conference on Computational Intelligence and security

作者： Chunlin Chen Daoyi Dong Yu Dong Qiong Shi Department of Control and System Engineering School of Management and Engineering Nanjing University Nanjing China Key Laboratory of Systems and Control Institute of Systems Science Chinese Academy and Sciences Beijing China Department of Information Management and Decision Science University of Science and Technology Hefei China College of Humanities and Social Science Anhui Medical University Hefei China

ISBN: (纸本)1424406048

In this paper, a quantum reinforcement learning method is proposed for repeated game theory. First, the quantum reinforcement learning algorithm is introduced based on quantum state superposition principle and its superiority is analyzed. Then, it is applied to repeated games and the experiments show its effectiveness. Related issues are also discussed before the conclusion is given

关键词： Quantum mechanics Game theory Artificial intelligence Quantum computing Learning systems Nuclear magnetic resonance Control systems Algorithm design and analysis History Databases

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Battery-Sensing Intrusion Protection system

Battery-Sensing Intrusion Protection System

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Proceedings of the Annual IEEE SMC information Assurance Workshop (IAW)

作者： Buennemeyer Jacoby Chiang Marchany Tront Bradley Department of Electrical and Computer Engineering Virginia Polytechnic Institute and State University Blacksburg VA USA United States Military Academy West Point NY USA Computer Science Department Virginia Polytechnic Institute and State University Blacksburg VA USA Information Technology and Security Laboratory Virginia Polytechnic Institute and State University Blacksburg VA USA

This paper proposes an innovative battery-sensing intrusion protection system (B-SIPS) for mobile computers, which alerts on power changes detected on small wireless devices. These hosts are employed as sensors in a wireless network and form the basis of the "Canary-Net" intrusion detection system (IDS). This detection capability is scalable and complementary with existing commercial and open system network IDSs. B-SIPS implementation correlates device power consumption with IEEE 802.11 and Bluetooth communication activity. Irregular and attack activity is detected and reported to the intrusion detection engine for correlation with existing signatures in a database and for forensic investigation by a security manager

关键词： Intrusion detection Wireless sensor networks Power system protection Mobile computing Sensor systems Open systems Energy consumption Bluetooth Engines Databases

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Research on Restraining Low Frequency Oscillation with Flywheel Energy Storage system

Research on Restraining Low Frequency Oscillation with Flywh...

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International Conference on Power system technology (POWERCON)

作者： Yun Zhong Jiancheng Zhang Gengyin Li Zhiyuan Chen School of Information Engineering University of Nanchang Baoding Jiangxi China Department of Electrical power Engineering North China Electric Power University Baoding Hebei China Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control under Ministry of Education North China Electric Power University Baoding Hebei China Baoding Zhongli Power Science and Technology Development Company Limited Baoding Hebei China

Low frequency oscillations in the interconnected power systems are observed all around the world. Besides conventional PSS to suppress Low frequency oscillation, there are other modern FACTS devices to damp oscillation, among which flywheel energy storage system (FESS) is a comparative valid way. The theory on restraining low frequency oscillation used by flywheel energy storage system is described through transfer function diagram and complex torque coefficient. A numerical model of flywheel energy storage asynchronous motor controlled by VVVF inverter is derived from its mathematical model in alpha-beta coordinate system. Then the total model eigenvalue is analyzed. Based on analysis, attach control strategy using two parallel independent parts for active power control and reactive power control is designed in FESS to restrain low frequency oscillation. The calculation result shows that flywheel energy storage system is an effective way to restrain low frequency oscillation and enhance power system dynamic performance.

关键词： Frequency Flywheels Energy storage Power system interconnection Transfer functions Torque Numerical models Inverters Mathematical model Power system modeling

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Modeling the intrusion by using capability of attackers

Modeling the intrusion by using capability of attackers

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International Conference on Machine Learning and Cybernetics, ICMLC 2005

作者： Wang, Liang-Min Zhang, Jian-Ming Ma, Jian-Fenc Department of Computer Science Jiangsu University Zhenjiang 212013 China Key Laboratory of Computer Network and Information Security Ministry of Education Xidian University 710071 China

ISBN: (纸本)078039092X

Modeling the intrusion is an open problem which is necessary to be solved in Intrusion Tolerance system. A model of state transition and its constructing algorithm is presented which is described with the capability of attackers. With the attention on the influence upon system, the intrusion is described by the capability of the attacker in this model. And the intrusion model is formalized by the definition of Meta-attack. Then an approach to cluster the hyper-alerts into Meta-attack using correlation algorithm is presented. In the end, the method on modeling the intrusion by Meta-attack is presented, and the proof of existence and uniqueness of the model constructed by this approach are given. © 2005 IEEE.

关键词： Problem solving

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security policy analysis in network-attached optical disk storage system

Security policy analysis in network-attached optical disk st...

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Seventh International Symposium on Optical Storage, ISOS 2005

作者： Liu, Jun Xie, Changsheng Huang, Hao Key Laboratory of Data Storage System Huazhong University of Science and Technology Wuhan 430074 China Department of Computer Science Wuhan Institute of Technology Wuhan 430074 China

The network-attached optical disk storage system has the advantages of the network-attached storage system and the optical storage device. Due to the data reliability and the removability of the storage medium, this optical storage system is very effective on massive data providing and backup. Recently, achievements have been made in security models and policies in a distributed network system environment and the network-attached storage system environment. However, the relevant research is not enough in the network-attached optical disk storage system, especially in a network-attached optical disc device. So it is significant to analyze the security policy and setup a good security model for the network-attached optical disk storage system. This paper makes a theoretical analysis on the security policy in the network-attached optical disk storage system. Firstly, the difference of the network-attached optical disk storage system and the distributed network system environment is presented. The network-attached optical disk storage system is a special distributed network system, and to meet the requirements of the system security, we use the authentication and key exchange protocol method to decide who is authorized to have what access rights on which objects with respect to some security models and policies in compute system. Secondly, we compare the effect of several types of authentication and key distribution protocols in a distributed network system environment. Then we port these authentication and key exchange protocols on the network-attached optical disk storage system environment. Based on these analyses, this paper proposes a secure key management scheme for security services in the network-attached optical disk storage system over open networks. This scheme focuses on the framework for authentication and the centralized key management, and future work will focus on dynamic membership management.

关键词： Optical disk storage

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