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7th international conference on advances in Grid and Pervasive Computing, GPC 2012

作者： Jeong, HwaYoung Park, JongHyuk Humanitas College Kyunghee University Hoegi-dong Seoul 130-701 Korea Republic of Department of Computer Science and Engineering Seoul National University of Science and Technology Korea Republic of

ISBN: (纸本)9783642307669

Cloud computing is a new trend of information technology and computing system. In the traditional computing infrastructure, operating system software, applications and data are typically stored and managed on an individual user's computer. Cloud-computing has a different form from traditional way. All kinds of service and software are stored, accessed, and used via third party servers connected to the internet. If cloud computing was used, data and information can be easily shared and managed by user and service provider. Furthermore the user can do their works without application or software. When the user wants work using the software or application, the user just access cloud computing system via the internet. On the other hand, cloud computing has large data and information. therefore the efficient method for large data/information management for cloud computing is necessary. In this paper, we proposed a cloud storage model for cloud computing environment. the model is to consider the relation between the cloud structures;service provider, application, and user. © 2012 Springer-Verlag.

关键词： Cloud storage

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Estimating deadline-miss probabilities of tasks in large distributed systems

Estimating deadline-miss probabilities of tasks in large dis...

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7th international conference on advances in Grid and Pervasive Computing, GPC 2012

作者： Wang, Dongping Gong, Bin Zhao, Guoling Department of Computer Science and Technology ShanDong University Jinan China Shandong College of Electronic Technology Jinan China

ISBN: (纸本)9783642307669

In the past decade, large distributed systems with unreliable hosts including P2P systems and volunteer computing systems have become common. the volatility nature of resources makes it a challenge to schedule tasks with soft deadline in such systems. In this paper we examine one of the critical problems, estimating deadline-miss probabilities of tasks running on unreliable hosts. through analysis of trace data gathered from an actual volunteer computing system, we get a general property about host's period available fraction, based on which we propose an efficient method of estimating deadline-miss probability. To evaluate the accuracy of this method, we conduct trace-driven simulations whose results show that average absolute difference between estimated probability and real ratio is smaller than 2%. To compare our method with two other methods, we simulate a scheduler which distributes task based on estimated probability. Results show that our method performs better. © 2012 Springer-Verlag.

关键词： Probability

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Design science research and the core of information systems

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7th international conference on Design science Research in Information Systems: advances in theory and Practice, DESRIST 2012

作者： Alturki, Ahmad Bandara, Wasana Gable, Guy G. Queensland University of Technology Information Systems Discipline 126 Margaret St. Brisbane QLD Australia

ISBN: (纸本)9783642298622

Design science Research (DSR) has emerged as an important approach in Information Systems (IS) research, evidenced by the plethora of recent related articles in recognized IS outlets. Nonetheless, discussion continues on the value of DSR for IS and how to conduct strong DSR, with further discussion necessary to better position DSR as a mature and stable research paradigm appropriate for IS. this paper contributes to address this need, by providing a comprehensive conceptual and argumentative positioning of DSR relative to the core of IS. this paper seeks to argue the relevance of DSR as a paradigm that addresses the core of IS discipline well. Here we use the framework defined by Wand and Weber, to position what the core of IS is. © 2012 Springer-Verlag.

关键词： Information systems

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A novel model for semantic learning and retrieval of images 1

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7th IFIP international conference on Intelligent Information Processing, IIP 2012

作者： Li, Zhixin Shi, ZhiPing Tang, ZhengJun Zhao, Weizhong College of Computer Science and Information Technology Guangxi Normal University Guilin 541004 China College of Information Engineering Capital Normal University Beijing 100048 China College of Information Engineering Xiangtan University Xiangtan 411105 China

ISBN: (数字)9783642328916

ISBN: (纸本)9783642328909

In this paper, we firstly propose an extended probabilistic latent semantic analysis (PLSA) to model continuous quantity. In addition, corresponding EM algorithm is derived to determine the parameters. then, we apply this model in automatic image annotation. In order to deal with the data of different modalities according to their characteristics, we present a semantic annotation model which employs continuous PLSA and traditional PLSA to model visual features and textual words respectively. these two models are linked with the same distribution over all aspects. Furthermore, an asymmetric learning approach is adopted to estimate the model parameters. this model can predict semantic annotation well for an unseen image because it associates visual and textual modalities more precisely and effectively. We evaluate our approach on the Corel5k and Corel30k dataset. the experiment results show that our approach outperforms several state-of-the-art approaches. © 2012 IFIP international Federation for Information Processing.

关键词： Image retrieval

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IFIP advances in Information and Communication technology: Preface

IFIP Advances in Information and Communication Technology

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IFIP advances in Information and Communication technology 2012年 385 AICT卷 V页

作者： Shi, Zhongzhi Leake, David Vadera, Sunil Chinese Academy of Sciences Institute of Computing Technology Beijing 100190 China Indiana University Computer Science Department Bloomington IN 47405 United States University of Salford School of Computing Science and Engineering Salford M5 4WT United Kingdom

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An effective partition approach for elastic application development on mobile cloud computing

An effective partition approach for elastic application deve...

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7th international conference on advances in Grid and Pervasive Computing, GPC 2012

作者： Qin, Zhuoran Zhang, Jixian Zhang, Xuejie Dept. of Computer Science and Technology Yunnan University Kunming China High Performance Computing Center Yunnan University Kunming China

ISBN: (纸本)9783642307669

Mobile cloud computing is the cloud infrastructure where the computation and storage are moved away from mobile devices. the elastic partition in according to context-awareness could break through the resource constrain of mobile devices. the improved (K+1) coarse partition algorithm is used to partition the cost graph, where the vertexes are represented by the execution cost on mobile device and offloading cost to cloud. the two factors are represented by some contextual information including execution time, current power, network and the probabilities which are obtained by the statistical analysis of historical results. the levels of context-awareness could adjust the weight of the contextual information and lead to partition again. Partition cost module is used to store and compute the contextual information. the extensive experiments deployed the OCR project on the proposed architecture demonstrate a good performance in different input and network environments. © 2012 Springer-Verlag.

关键词： Mobile cloud computing

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Service-oriented ontology and its evolution

Service-oriented ontology and its evolution

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7th international conference on advances in Grid and Pervasive Computing, GPC 2012

作者： Pan, Weisen Chen, Shizhan Feng, Zhiyong School of Computer Science and Technology Tianjin University Tianjin China

ISBN: (纸本)9783642307669

Web service was designed to solve the problem of the heterogeneous system integration and make heterogeneous systems interoperable. However, current Web service technologies are not sufficient to build distributed, heterogeneous Web service infrastructure, because they are provide by different service providers, use different conceptual model and design tools, which hinders Web service automatic discovery and composition. With diversification of user requirements, we need to reasonable abstraction and organization of the Web services through a new viewpoint. thus, an lightweight Web services semantic description model, namely Service Ontology, is proposed in this paper, whose intention is to make comprehensive and multi-dimension semantic description for Web services. this paper also describes the evolution mechanism of service ontology. the mechanisms make use of the semantic tags to expand Service Ontology. Finally, a case study is presented in the paper that validates the Service Ontology can fulfill the multi-granularity requirement of the users. this paper has made the beneficial exploration in multi-dimension modeling and automation organization of Web services. © 2012 Springer-Verlag.

关键词： Web services

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A new RBAC based access control model for cloud computing

A new RBAC based access control model for cloud computing

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7th international conference on advances in Grid and Pervasive Computing, GPC 2012

作者： Tang, Zhuo Wei, Juan Sallam, Ahmed Li, Kenli Li, Ruixuan College of Information Science and Engineering Hunan University Changsha 410082 China School of Computer Science and Technology Huazhong University of Science and Technology Wuhan Hubei 430074 China

ISBN: (纸本)9783642307669

Access Control is an important component of Cloud Computing;specially, User access control management;however, Access Control in Cloud environment is different from traditional access environment and using general access control model can't cover all entities within Cloud Computing, noting that Cloud environment includes different entities such as data owner, end user, and service provider. In this paper, we propose a new access control based on Role-based access control (RBAC) model. this model includes two kind of roles, user role (UR) and owner role (OR);such that, Users get credential from owners to communicate with service provider and to get access permissions of resources. We also discuss the aspects of user access control management, such as authentication, privilege management, and deprovisioning. Moreover, we use administrative scope to update hierarchy when there is a role added or revoked to simplify the user access control management. By applying the model in Cloud environment the results shows that it can reduce the security problems to two classes in the RT [←, ∩] role-based trust-management language with a test-paper system. © 2012 Springer-Verlag.

关键词： Environmental management

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Agent based quality management middleware for context-aware pervasive applications

Agent based quality management middleware for context-aware ...

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7th international conference on advances in Grid and Pervasive Computing, GPC 2012

作者： Zheng, Di Wang, Jun Ben, Ke-Rong Department of Computer Science Naval University of Engineering Wuhan Hubei 430033 China Key Research Lab. Wuhan Air Force Radar Institute Wuhan Hubei 430019 China

ISBN: (纸本)9783642307669

With the rapid development of the information technology, it is inevitable that the distributed mobile computing will evolve to the pervasive computing gradually whose final goal is fusing the information space composed of computers with the physical space in which the people are working and living in. To achieve this goal, one of the problems is how to continuously monitor/capture and interpret the environment related information efficiently to assure high context awareness. Many attentions have been paid to the research of the context-aware pervasive applications. However, most of them just use the raw context directly or take the Quality of Context (QoC) into account in just one or two aspect. therefore, we propose a agent based quality management middleware to support QoC management through various layers. By the agents, we can configure different strategies to refinery raw context, discard duplicate and inconsistent context so as to protect and provide QoS-enriched context information of users to context-aware applications and services. © 2012 Springer-Verlag.

关键词： Middleware

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QoS monitoring and dynamic trust establishment in the cloud

QoS monitoring and dynamic trust establishment in the cloud

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7th international conference on advances in Grid and Pervasive Computing, GPC 2012

作者： Chandrasekar, Ashok Chandrasekar, Karthik Mahadevan, Malairaja Varalakshmi, P. Department of Information Technology Madras Institute of Technology Anna University Chennai India

ISBN: (纸本)9783642307669

In the current cloud computing scenario, the need for establishing an SLA is essential. there is an even stronger necessity for monitoring whether the QoS mentioned in the SLA is met by the service provider. the next big issue is the trust on the service provider. Even though the providers pledge to meet the agreed upon QoS, there is a desideratum for a trust model which will give a quantitative measure of the trust to the requester before choosing a service provider. In this paper, we portray a novel approach which will monitor the QoS, negating the drawbacks associated with the existing techniques. the amount of monitoring data sent over the network is reduced by employing a derived and state monitoring approach. Based on the monitoring results, trust is established dynamically by making use of the Markov Chain model. the proposed approach is implemented using a web based system which will elucidate its use in real time. We believe that our dynamic trust establishment technique will be munificent in supporting the way trust management will be viewed in future. © 2012 Springer-Verlag.

关键词： Chains

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