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IEEE/IFIP International Conference on Embedded and Ubiquitous computing, EUC

作者： Ran Zheng Xiaofei Liao Hai Jin Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

During the study of grid projects, a real grid environment or simulated grid is built up for development and experiment normally. But there are some disadvantages such as high cost, complex deployment and configuration, hard management, even conflict among people. A novel virtual grid experiment method with HAL (Hardware Abstraction Level) virtualization technology is presented, which can conquer the disadvantages above and has been used in MedImgrid for the development of medical grid applications. The experiment shows that the method is feasible with low cost, easy configuration and convenient management, so as to increase research efficiency and shorten developing cycle. Furthermore, it can be applied not only in MedImgrid but also in some other grid projects.

关键词： Biomedical imaging Medical diagnostic imaging grid computing Costs Application software Testing Computational modeling Hardware Application virtualization Medical services

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An Asymmetrical Encryption Based automated trust negotiation model

An Asymmetrical Encryption Based automated trust negotiation...

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Inaugural IEEE-IES Digital EcoSystems and Technologies Conference, DEST

作者： Hai Jin Zhensong Liao Deqing Zou Chisong Li Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9781424414895

Automated trust negotiation (ATN) is an important means to establish trust between strangers through the exchange of digital credentials and mobile access control policies specifying what combinations of credentials a stranger must submit. As a certificate may contain sensitive information, unlimited disclosure will leak valuable information or jeopardize individual privacy. In order to prevent information leakage, the negotiation protocol is designed so complicated that a requestor is hard to attain the access. In addition, if the encryption algorithm is short in security intensity, the transmitting message over the public channel is easy to be attacked. To solve these problems, an asymmetrical encryption based ATN model (AEBM) is proposed in this paper. AEBM adopts credentials with a flexible format to meet the requirements of access control policies, instead of disclosing the whole contents of a certificate. Further, AEBM uses asymmetric encryption technique to encrypt the transmitting message, which can prevent information from leaking. AEBM presents a new negotiation strategy to enhance the negotiation efficiency. A use case is studied to prove that AEBM is sound and reasonable.

关键词： Cryptography Access control Protocols Public key Educational institutions Authentication Ecosystems

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Heterogeneous Medical Data Share and Integration on grid

Heterogeneous Medical Data Share and Integration on Grid

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International Conference on BioMedical Engineering and Informatics (BMEI)

作者： Ran Zheng Hai Jin Qin Zhang Yingshu Liu Pan Chu Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

It is very significant for the medical and health enterprises to develop an efficient medical information grid to achieve sufficient medical data share and integration. In order to access heterogeneous data resources transparently, front agent is built on heterogeneous databases or medical systems, the same as the unified data models and mapping rules with grid services to communicate with upper grid middleware, so that users can query or access medical data conveniently. Two medical application instances, medical information integration and content-based image diagnosis or retrieval of emphysema disease, are introduced and realized with these technologies.

关键词： Biomedical imaging Medical diagnostic imaging Image databases Data models Middleware Medical services Biomedical equipment Information retrieval Image retrieval Content based retrieval

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An Authenticated Encryption Mechanism for Secure Group Communication in grid

An Authenticated Encryption Mechanism for Secure Group Commu...

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International Conference on Internet computing in Science and Engineering (ICICSE)

作者： Yunfa Li Hai Jin Deqing Zou Sanmin Liu Zongfen Han Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

In grid computing, group communication is an important strategy to realize large-scale information resource sharing. However, it is very difficult to ensure the security of group communication in large-scale grid environment. In this paper, based on the basic theories of threshold signature and the basic characteristics of group communication in grid, we present four algorithms, including keys generating, individual signature generating and verifying, group signature generating and encrypting, decrypting and group signature verifying, which constitute the authenticated encryption mechanism for group communication in grid. Finally, we validate the correctness of the authenticated encryption mechanism proposed in this paper and analyze its security. In addition, the validity of this mechanism is verified by the experiments. The results show that it is efficient to ensure the security of group communication in grid.

关键词： Cryptography Communication system security Large-scale systems Mobile communication grid computing Character generation Mesh generation Information resources Information security Web and internet services

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A Heterogeneous Data Parallel Computational Model for Cell Broadband Engine

A Heterogeneous Data Parallel Computational Model for Cell B...

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Chinagrid Annual Conference (Chinagrid)

作者： Bo Li Hai Jin Ran Zheng Qin Zhang Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9780769533063

Cell broadband engine (Cell BE) is a state-of-the-art heterogeneous multi-core processor. It is an accelerator-based multi-core architecture, which contains a powerful 64-bit dual-threaded PowerPC core and eight high efficient single-instruction-multiple-data (SIMD) cores. Apart from traditional parallel systems, the users must explicitly manage the communication, scheduling and load-balancing to achieve cellpsilas greatest performance. In this paper, a novel heterogeneous data parallel computational model on cell BE is proposed. This aggressive model could not only exploit computing power of SPE but also that of PPE and aggregate them together to achieve high performance. We investigate the performance of this model with naive ray tracing algorithm. The preliminary experimental results validate the efficiency of this model.

关键词： Computational modeling Computer architecture Data models Microprocessors Ray tracing Acceleration Optimization

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Pricing Strategies in grid Market: Simulation and Analysis

Pricing Strategies in Grid Market: Simulation and Analysis

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第七届网格与协同计算国际会议(Seventh International Conference on grid and Cooperative computing GCC 2008)

作者： Jin Huang Hai Jin Song Wu Xia Xie Simon See Jie Song Melvin Koh Services Computing Technology and System Lab Cluster and Grid Computing Lab Huazhong University of S Asia Pacific Science and Technology Center Sun Microsystems Inc.Singapore

ISBN: (纸本)9781424432806

The most important concept of a market is price – the terms on which the trading objects (products or services) are exchanged. In an ideal market, the price is a reflection of the current state of the market, and therefore it should be dynamic. From the seller perspective, using an effective dynamic pricing strategy can make a difference between making a profit or loss in a makret. In a grid marketplace, the strategy is even more important given it is very dynamic and volatile nature. In this paper, we describe and review three different pricing strategies for the grid market: Demand-Response, Revenue-Response and Price-Maximizing strategy, and analyze their behavior in different market conditions using simulation approach. Our results show that two of the strategies are able to generate high revenue in various market conditions.

关键词： Auction pricing strategies grid market simulation

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Intel, Merced, and the Fate of Microprocessor Forum

Intel, Merced, and the Fate of Microprocessor Forum

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IEEE Hot Chips Symposium (HCS)

作者： Michael Slater ETS-Lindgren Cedar Park TX USA Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

This article consists of a collection of slides from the author's conference presentation. It is concluded that unrealistic targets are endemic to a highly visible project managed by executives disconnected from t... 详细信息

关键词： Microprocessors Hardware

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Aeolus: Reconcilable Key Management Mechanism for Secure Group Communication in grid

Aeolus: Reconcilable Key Management Mechanism for Secure Gro...

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IEEE Asia-Pacific Conference on services computing (APSCC)

作者： Yunfa Li Xiangha Xu Jian Wan Hai Jin Zongfen Han Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China Hangzhou Dianzi University Hangzhou Zhejiang CN

In traditional grid, grid user can not validate whether grid service registered in grid platform can execute correctly or not because the system does not provide the measurement mechanism for grid service. In order to solve this problem, we propose a series of strategies and methods for trusted grid. These strategies and methods include: an access control policy for reference database, an integrity attestation for reference datasheet, a construction method of reference datasheet, a trusted storage algorithm of reference datasheet and a report algorithm of reference datasheet. All these constitute the measurement mechanism of service for trusted grid. Some experiments are done in order to validate the feasibility and the availability of this mechanism. The results show that it is feasible and efficient to validate whether grid service registered in trusted grid platform can execute correctly or not.

关键词： Distribution strategy grid computing Information security Centralized control Technology management Computer science Character generation Large-scale systems Distributed computing Conference management

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Information Value Evaluation Model for ILM

Information Value Evaluation Model for ILM

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ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed computing (SNPD)

作者： Hai Jin Muzhou Xiong Song Wu Services Computing Technology and System Lab Huazhong University of Science and Technology Wuhan China Cluster and Grid Computing Laboratory Huazhong University of Science and Technology Wuhan China School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9780769532639

The first step towards the information lifecycle management is to differentiate information by values. This paper presents an evaluation model for information value. The idea of the model is from commodity value discipline in economic area. The output of information value evaluation model is determined by information itself which is like commodity price is determined by use-value in economic area. The output of the model is changed around the real information value and controlled by the relationship between information supply and demand. The output of the model is determined by factors from three aspects that are information itself, information supply, and information demand. When applying the model into traditional information management approaches, such as replication, data migration, and backup, those mechanisms control the output of the model through adjusting the ability of information supply.

关键词： Biological system modeling Supply and demand Computational modeling Bandwidth Data models Economics Analytical models

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Discourage free riding in Peer-to-Peer file sharing systems with file migration and workload balancing approach

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中国高等学校学术文摘·计算机科学 2007年第4期1卷 436-449页

作者： YU Yijiao JIN Hai Services Computing Technology and System Lab Cluster and Grid Computing LabHuazhong University of Science and TechnologyWuhan 430074China

Free riding is a great challenge to the development and maintenance of Peer-to-Peer(P2P)networks.A file migration and workload balancing based approach (FMWBBA)to discourage free riding is proposed in this *** heart of our mechanism is to migrate some shared files from the overloaded peers to the neighboring free riders automatically and transparently,which enforces free riders to offer services when altruistic peers are heavily *** migration is a key issue in our approach,and some related strategies are discussed.A simulation is designed to verify this approach,and the results show that it can not only alleviate free riding,but also improve the Quality of Service(QoS)and robustness of P2P networks efficiently.

关键词： free riding free rider Peer-to-Peer(P2P)network file migration workload balancing Quality of Service(QoS)

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