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Gippy: Campus GIS information system supported by P2P

Gippy: Campus GIS information system supported by P2P

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2007 International Symposium on Applications and the Internet - Workshops, SAINT-W

作者： Fengyuan, Xu Zhiyi, Fang Xiao, Han Department of Computer Science and Technology Jilin University Changchun 130012 China Key Laboratory Symbolic Computation and Knowledge Engineering Education Ministry Jilin University Changchun 130012 China School of Economics and Information Systems Jilin University Changchun 130012 China

ISBN: (纸本)0769527574

Geographical information system (GIS) integrates operation and synthesis analysis of multi-factor information, satisfying the demand of high efficiency and visual performance in human computer Interaction, whereas Peer-to-Peer (P2P) technology assigns and utilizes network resources flexibly, making information exchange more dynamic and real-time with participants' autonomy to certain extent. Therefore, by the thought of uniting information processing merits of GIS and P2P, a design method of new information service system -Gippy - is introduced to keep pace with information exchange demands among dispersed governance regions, especially as universities. It is discussed in this paper that Gippy's key achieving technologies including its applications as well as architecture characteristics. We also points out new value-added functions adopted by Gippy, and give a research on feasibility of optimizing and extending. © 2007 IEEE.

关键词： information systems

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The Epidemic Threshold of a More General Epidemic Spreading Model for Network Viruses

The Epidemic Threshold of a More General Epidemic Spreading ...

引用

International Conference on Natural Computation (ICNC)

作者： Lansheng Han Shuxia Han Min Yang Laboratory for Information Security School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China Mathematics Department Huazhong University of Science and Technology Wuhan China School of Computer Science Wuhan University of China Wuhan Hubei China

Deferent from the other epidemic models, this paper focus on the different spreading features of network viruses compared with biological viruses such as the connectivity rate of the net is variable and that is also the key factor determining the existence of the threshold. Based on a more general epidemic model of the network viruses we constructed in another paper, this paper presents the solution to the model, and then gets the conclusion: if the speed of viruses' propagation varies with the network connectivity rate and their curing rates are relatively small, then the epidemic thresholds do not exist. For the particular case of the connectivity rate the paper carries out the simulation test and finds it is consistent well with the statistics of the real viruses. Thus the paper replies the two open problems about the epidemic model of computer virus model proposed by White.

关键词： Biological system modeling computer viruses Mathematical model computer science computer networks Predictive models Equations Laboratories information security

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A Role-Based Secure Workflow Model

A Role-Based Secure Workflow Model

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第六届网格与协同计算国际会议(The Sixth International Conference on Grid and Cooperative Computing GCC 2007)

作者： Jianliang Xu Chunyan Song Shenhua Li Mingqiang Wang Department of Computer Science and Technology Ocean University of China Qingdao 266100 P.R.China Laboratory of Cryptographic Technology and Information Security Shandong University Jinan 250100

Workflow Management system is used for supporting many day-to-day workflows in large organizations. But heterogeneous and distributed computing systems make security management of WFMS decentralized, thus its security must be noticed. In this paper, we propose a role-based secure workflow model which realizes the principle of separation of duties (SoD), the principle of least privilege, integrity, authorization and availability. We also portray the whole model as a multi-layered architecture with a multilayered state graph for expressing and analyzing the flow of authorization. The layers are, respectively, role layer, task layer, control layer and data layer.

关键词： information security Data security Authorization Access control Permission Standards development Grid computing Marine technology Electronic mail Workflow management software

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Pseudo Trust: Zero-Knowledge Based Authentication in Anonymous Peer-to-Peer Protocols

Pseudo Trust: Zero-Knowledge Based Authentication in Anonymo...

引用

International Symposium on Parallel and Distributed Processing (IPDPS)

作者： Li Lu Jinsong Han Lei Hu Jinpeng Huai Yunhao Liu Lionel M. Ni State Key Laboratory of Information Security Graduate School of Chinese Academy of Sciences Beijing China Department of Computer Science and Engineering Hong Kong University of Science and Technology Hong Kong China State Key Laboratory of Software Developing Environment Beihang University Beijing China

Most of the current trust models in peer-to-peer (P2P) systems are identity based, which means that in order for one peer to trust another, it needs to know the other peer's identity. Hence, there exists an inherent tradeoff between trust and anonymity. To the best of our knowledge, there is currently no P2P protocol that provides complete mutual anonymity as well as authentication and trust management. We propose a zero-knowledge authentication scheme called pseudo trust (PT), where each peer, instead of using its real identity, generates an unforgeable and verifiable pseudonym using a one-way hash function. A novel authentication scheme based on zero-knowledge proof is designed so peers can be authenticated without leaking any sensitive information. With the help of PT, most existing identity-based trust management schemes become applicable in mutual anonymous P2P systems. We analyze the levels of security and anonymity in PT, and evaluate its performance using trace-driven simulations and a prototype implementation. The strengths of pseudo trust include the lack of need for a centralized trusted party or CA, high scalability and security, low traffic and cryptography processing overheads, and man-in-middle attack resistance. We aim for the pseudo trust design to be included in the P2P trust and anonymity context.

关键词： Authentication Peer to peer computing Protocols Knowledge management Identity management systems Performance analysis information security Analytical models Virtual prototyping Scalability

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A model for learning and acting rationally in multiagent system

A model for learning and acting rationally in multiagent sys...

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IEEE International Conference on Robotics and Biomimetics

作者： Yao-Hai Lin Shan-Li Hu Jian-Bin Luo Department of Computer Science and Technology Fuzhou University Fuzhou China Department of Computer and Information Science Fujian Agriculture And Forestry University Fuzhou China Key Laboratory for Computer Science Chinese Academy and Sciences Beijing China

ISBN: (纸本)9781424417612;1424417619

In order to characterize the agent, there is a presupposition that each agent has its set of propositions. The model is based upon our prior observation, and satisfies many properties. Furthermore, we describe concretely the desire of agent by twin-subset semantics of desire operator. If friendship for learning of two agents have been made, one agent has the authorization to increase his set of propositions rationally, namely, learning from the other one. The paper aims to make one agent collaborates rationally with the other one, and implement BDI logic in multi-agent system.

关键词： Multiagent systems computer science Logic Robots Collaboration Biomimetics information science Agriculture Forestry Laboratories

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A Rough Set Approach to Grouping Goods in Electronic Commerce

A Rough Set Approach to Grouping Goods in Electronic Commerc...

引用

International Conference on Advanced Communication technology (ICACT)

作者： Qiguo Duan Duoqian Miao The Key Laboratory of Embedded System and Service Computing Ministry of Education Shanghai China Department of Computer Science and Technology University of Tongji Shanghai China Department ofComputer Science and Technology University of Tongji Shanghai China

As electronic commerce (EC) become more and more prevalent to people, it is very critical to provide the right information to the right customers. The EC sites are generating large amount of data on customer purchases. Data mining techniques in EC domain is currently a hot research area. This paper proposes a rough set based approach to obtaining patterns of goods and classifying associated goods into groups, which can be used by the sites to group their goods according to the customers' preference and adopt appropriate selling policies.

关键词： Electronic commerce Set theory Data mining computer science Laboratories Embedded system Embedded computing Web pages Transaction databases information systems

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Research on Usage Control Model with Delegation Characteristics Based on OM-AM Methodology

Research on Usage Control Model with Delegation Characterist...

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IFIP International Conference on Network and Parallel Computing Workshops (NPC Workshops)

作者： Zhiyong Zhang Lin Yang Qingqi Pei Jianfeng Ma Key Laboratory of Computer Network and Information Security Ministry of Education Xidian University Xi'an China Electron. Information Engineering Coll. Henan University of Science and Technology Luoyang China The Research Institute Renesas Technology Corporation Beijing China

UCON ABC is a basic framework of next generation access control policy Usage Control that is composed of Authorization-oBlige-Condition components, but so far it lacks of important delegation characteristic. The paper analyses the behaviors of delegation in UCON based on OM-AM engineering principles, presents a formalized usage control model with delegation features using BNF Extensions, called as UCON D , and further articulates its hybrid architecture based on Client & Server Delegation Reference Monitors and relative key protocol functions. UCON D is an extension model of UCON ABC in the aspect of delegation authorization, and it resolves the delegation question of Usage Control Model. Moreover, we specify delegation procedure of an application for Digital Medium Resource Distribution system.

关键词： Access control information security Authorization Resource management Mechanical factors Access protocols Environmental management Design engineering Parallel processing Laboratories

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Using Three Layer Neural Networks to Compute Discrete Real Functions

Using Three Layer Neural Networks to Compute Discrete Real F...

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International Conference on Natural Computation (ICNC)

作者： Jian Wang Yixian Yang Nan Jiang Zhaozhi Zhang Xiaomin Ma Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing China College of Computer Science Beijing University of Technology Beijing China Institute of Systems Science Academia Sinica Beijing China Engineering and Physics Department Oral Roberts University Tulsa OK USA

This paper concerns how to compute discrete real functions using three-layer feedforward neural networks with one hidden layer. Firstly, we define strongly and weakly symmetric real functions. Then we give a network to compute a specific strongly symmetric real function. The number of the hidden neurons is given and the weights of hidden neurons are 1 or -1. Algorithm 1 modifies the weights to real numbers to compute arbitrary strongly symmetric real functions. Theorem 3 extends the results to compute any discrete real functions. Finally, we give an example to indicate our results.

关键词： Neural networks computer networks Neurons Feedforward neural networks Telecommunication computing Fuzzy systems information security Laboratories Telecommunication switching Educational institutions

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Ant Colony system based on the ASRank and MMAS for the VRPSPD

Ant Colony System based on the ASRank and MMAS for the VRPSP...

引用

第三届IEEE无线通讯、网络技术暨移动计算国际会议

作者： Chuoya Yu Tao Zhang Yuejie Zhang Wenxin Tian School of Information Management and Engineering Shanghai University of Finance and Economics Shangh Department of Computer Science and Engineering Shanghai Key Laboratory of Intelligent Information P Information Office in Center of Modern Education Technology Shanghai Finance University Shanghai 201

This paper builds a mixed integer programming model for the VRPSPD. An Ant Colony system (ACS) approach combining with the pheromone updating strategy of ASRank and MMAS ant algorithm is proposed. The initial vehicle load is designed to be a random value correlated to the delivery and pick-up demands of the rest clients. The experimental results show that the approach could improve the vehicle load rate and get rid of the added total distance caused by fluctuating load and maximum capacity constraint. It could obtain the satisfied solution with high convergence speed in an acceptable time.

关键词： VRPSPD ant colony system mixed integer programming

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RLC_ACS: AN IMPROVED ANT COLONY ALGORITHM FOR VRPSDP

RLC_ACS: AN IMPROVED ANT COLONY ALGORITHM FOR VRPSDP

引用

2007 International Conference on Machine Learning and Cybernetics(IEEE第六届机器学习与控制论国际会议)

作者： XUE-CHAO ZHENG TAO ZHANG WEN-XIN TIAN YUE-JIE ZHANG School of Information Management and Engineering Shanghai University of Finance and Economics Shan Information Office in Center of Modem Education Technology of Shanghai Finance University Shanghai Department of Computer Science and Engineering Fudan University Shanghai Key Laboratory of Intelli

This paper studies the reverse logistics vehicle routing problem with simultaneous distribution of the goods and collection of the ones as same as the initial state by a homogeneous fleet of vehicles with capacities constraint and maximum distance constraint under a single *** presents a mixed integer programming *** the complex feature of the fluctuating vehicle load, this paper uses an Ant Colony system (ACS) approach combining with the pheromone updating strategy of ASRank and MM AS ant *** a heuristic factor based on residual loading capacity is designed to improve the vehicle loading ***, the paper proposes a candidate list based on saving-ant, and uses a local search with sweeping in the process of tour improvement to accelerate the *** making Comparisons with different algorithms of other researches, the experimental study indicates that RLC_ACS could obtain the satisfactory solution in the acceptable time.

关键词： VRPSDP Ant colony system Mixed integer programming

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