检索结果-内蒙古大学图书馆

IEEE International Conference on e-science and Grid Computing

作者： Henry Lin J.H. Abawajy Rajkumar Buyya Grid Computing and Distributed Systems Laboratory Department of Computer Science and Software Engineering University of Melbourne Melbourne VIC Australia Grid and Pervasive Computing Laboratory School of Engineering and Information Technology Deakin University Geelong VIC Australia

ISBN: (纸本)9781424430116

Data replication is one of the key components in data grid architecture as it enhances data access and reliability and minimises the cost of data transmission. In this paper, we address the problem of reducing the overheads of the replication mechanisms that drive the data management components of a data grid. We propose an approach that extends the resource broker with policies that factor in user quality of service as well as service costs when replicating and transferring data. A realistic model of the data grid was created to simulate and explore the performance of the proposed policy. The policy displayed an effective means of improving the performance of the grid network traffic and is indicated by the improvement of speed and cost of transfers by brokers.

关键词： Resource management Australia Telecommunication traffic Power generation economics Cost accounting Protocols Grid computing Pervasive computing computer science Software

来源：评论

学校读者我要写书评

暂无评论

Modeling, Control and Filtering of Multi-Time-Scale Dynamical systems Based on fuzzy singularly perturbed models

Modeling, Control and Filtering of Multi-Time-Scale Dynamica...

引用

International Conference on Intelligent systems Design and Applications (ISDA)

作者： Fuchun Sun Department of Computer Science and Technolog State Key Laboratory of Intelligent Technology and Systems Tsinghua University Beijing Beijing China

In this talk, a fuzzy singularly perturbed model is proposed for the modeling, control and filtering of a class of multi-time-scale dynamical systems, such as semiconductor packaging processes, multi-link (joint) flexible manipulators and large scale flexible space structure. The variant expands the idea from Takagi-Sugeno type fuzzy system that the dynamics of a class of distributed parameter systems can be approximated by softly merging locally linear singularly perturbed model, and an increased partition of fuzzy space will lead to a more precise approximation. As a result, the control problem for multi-time scale dynamical systems can be reduced to that for fuzzy singularly perturbed system so that plentiful of theoretical results are hopefully obtained.

关键词： Filtering Fuzzy control Fuzzy systems Semiconductor device packaging Manipulator dynamics Large-scale systems Takagi-Sugeno model distributed parameter systems Merging Control systems

来源：评论

学校读者我要写书评

暂无评论

QoS-aware adaptive multipath routing protocol in ad hoc networks

引用

Jisuanji Xuebao/Chinese Journal of computers 2006年第5期29卷 681-689页

作者： Liu, Yong-Qiang Yan, Wei Dai, Ya-Fei Department of Computer Science and Technology Peking University Beijing 100871 China Computer Networks and Distributed Systems Laboratory School of Electronics Engineering and Computer Science Peking University Beijing 100871 China

Based on QoS framework-SWAN, A gateway-centric adaptive QoS-aware multipath routing protocol (GC-AQMR) is presented. It can ensure that each mobile node has a set of link-disjoint and loop-free routing to the gateway. Moreover, the intermediate node in the path also has the multipath information to the gateway. When the intermediate node experiences the congestion or link-break, it can switch adaptively to an alternate path with the additional path information. Simulations have shown that the SWAN system adopting GC-AQMR outperforms the SWAN with AODV protocol on all the performance metrics: Packet delivery ratio, average end-to-end delay/throughput and the fairness among real-time flows.

关键词： computer networks

来源：评论

学校读者我要写书评

暂无评论

Information Dissemination via Network Coding

Information Dissemination via Network Coding

引用

IEEE International Symposium on Information Theory

作者： Damon Mosk-Aoyama Devavrat Shah Department of Computer Science University of Stanford Stanford CA USA Laboratory for Information and Decision Systems Massachusetts Institute of Technology Cambridge MA USA

We study distributed algorithms, also known as gossip algorithms, for information dissemination in an arbitrary connected network of nodes. distributed algorithms have applications to peer-to-peer, sensor, and ad hoc networks, in which nodes operate under limited computational, communication, and energy resources. These constraints naturally give rise to "gossip" algorithms: schemes in which nodes repeatedly communicate with randomly chosen neighbors, thus distributing the computational burden across all the nodes in the network and making the computation robust against node failures. Information dissemination based on network coding was introduced by Deb and Medard. They showed the virtue of coding by analyzing a coding algorithm for a complete graph. Although their scheme generalizes to arbitrary graphs, the analysis does not. We present analysis of this algorithm for arbitrary graphs. Specifically, we find that the information dissemination time is naturally related to the spectral properties of the underlying network graph. Our results provide insight into how the graph topology affects the performance of the coding-based information dissemination algorithm

关键词： Network coding Peer to peer computing computer networks distributed computing distributed algorithms Algorithm design and analysis Ad hoc networks Energy resources Robustness Network topology

来源：评论

学校读者我要写书评

暂无评论

Semantic-based Grid Resource Discovery and its Integration with the Grid Service Broker

Semantic-based Grid Resource Discovery and its Integration w...

引用

International Conference on Advanced Computing and Communications (ADCOM)

作者： Thamarai Selvi Somasundaram R.A. Balachandar Vijayakumar Kandasamy Rajkumar Buyya Rajagopalan Raman N. Mohanram S. Varun Department of Information Technology Anna University Chennai India Grid Computing and Distributed Systems Laboratory Department of Computer Science and Software Engineering University of Melbourne VIC Australia Centre for Development of Advanced Computing Chennai India Centre for Development of Advanced Computing Bangalore India

This paper addresses the need of semantic component in the grid environment to discover and describe the grid resources semantically. We propose semantic grid architecture by introducing a knowledge layer at the top of Gridbus broker architecture and thereby enabling broker to discover resources semantically. The semantic component in the knowledge layer enables semantic description of grid resources with the help of ontology template. The ontology template has been created using Protege-OWL editor for different types of computing resources in the grid environment. The Globus Toolkit's MDS is used to gather grid resource information and Protege-OWL libraries are used to dynamically create knowledge base of grid resources. Algernon inference engine is used for interacting with the knowledge base to discover suitable resources.

关键词： distributed computing Ontologies Middleware computer architecture computer networks Grid computing Libraries Engines Monitoring Aggregates

来源：评论

学校读者我要写书评

暂无评论

Joint Asynchronous Congestion Control and distributed Scheduling for Multi-Hop Wireless Networks

Joint Asynchronous Congestion Control and Distributed Schedu...

引用

IEEE Annual Joint Conference: INFOCOM, IEEE computer and Communications Societies

作者： L. Bui A. Eryilmaz R. Srikant X. Wu Department of Electrical and Computer Engineering and Coordinated Science Laboratory University of Illinois Urbana-Champaign USA Laboratory for Information and Decision Systems Massachusetts Institute of Technology USA Flarion Technologies NJ USA

来源：评论

学校读者我要写书评

暂无评论

Effective Acquisition of Geospatial Data Products in a Collaborative Grid Environment

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

引用

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

来源：评论

学校读者我要写书评

暂无评论

CSFS: A Java enabled network file storage system

CSFS: A Java enabled network file storage system

引用

作者： Hua, Han Yafei, Dai Xiaoming, Li Computer Networks and Distributed Systems Laboratory Department of Computer Science and Technology Peking University Beijing 100871 China

The CSFS (cryptographic storage file system) is a network file storage system that is suitable for a small-to-medium sized networks such as a campus network. In a CSFS, a lot of distributed file servers are organized in a star-liked architecture. File names are stored in a name server and file data are stored in distributed file servers. A CSFS has good scalability and is able to accommodate hundreds of file servers. We implemented a CSFS in pure Java and tested the system with a benchmark. The test results show that CSFS delivers acceptable performance for general file operations. Its performance of file upload and download is as efficient as FTP. It can support more than 450 concurrent online users. Copyright © 2005 John Wiley & Sons, Ltd.

关键词： File organization

来源：评论

学校读者我要写书评

暂无评论

distributed mining of partial periodic patterns in sequences

Distributed mining of partial periodic patterns in sequences

引用

作者： Hsiao, Han-Wen Tsai, Meng-Shu Tsai, Jeffrey J. P. Department of Computer Science and Information Engineering Asia University Taiwan Taiwan Institute of Information Technology Asia University Taiwan Taiwan Department of Computer Science University of Illinois Chicago United States Taichung Healthcare and Management University Department of Computer Science and Information Engineering Department of Biotechnology and Bioinformatics Department of Electrical Engineering and Computer Science University of Illinois Chicago Distributed Real-Time Intelligent Systems Laboratory

It has been an important task of discovering frequent fragments as particular patterns from large sequence databases generated from a variety of applications. In general, the patterns to be discovered may partially and asynchronously exist in sequences, and even contain gaps. In addition, it is necessary to collect the information regarding the locations and frequencies of the patterns. How to enumerate candidate patterns for evaluation without exponentially increasing the computation is another problem. In this paper, the modified periodicity transform is proposed to meet the requirements mentioned above. Also, a distributed computing framework is implemented to perform the mining task more efficiently. Both synthetic and biological sequences are utilized to examine the approach. The experimental results demonstrate the efficiency and effectiveness the system.

关键词： Data mining

来源：评论

学校读者我要写书评

暂无评论

The grid economy

The grid economy

引用

作者： Buyya, Rajkumar Abramson, David Venugopal, Srikumar Grid Computing and Distributed Systems Laboratory Department of Computer Science and Software Engineering University of Melbourne Vic. 3010 Australia School of Computer Science and Software Engineering Monash University Vic. 3163 Australia

This paper identifies challenges in managing resources in a Grid computing environment and proposes computational economy as a metaphor for effective management of resources and application scheduling. It identifies distributed resource management challenges and requirements of economy-based Grid systems, and discusses various representative economy-based systems, both historical and emerging, for cooperative and competitive trading of resources such as CPU cycles, storage, and network bandwidth. It presents an extensible, service-oriented Grid architecture driven by Grid economy and an approach for its realization by leveraging various existing Grid technologies. It also presents commodity and auction models for resource allocation. The use of commodity economy model for resource management and application scheduling in both computational and data grids is also presented. © 2005 IEEE.

关键词： Computational methods

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：