检索结果-内蒙古大学图书馆

International Conference on Intelligent Information Processing, Security and Advanced Communication, IPAC 2015

作者： Mansouri, Houssem Aliouat, Makhlouf Badache, Nadjib Khan, Al-Sakib Pathan Department of Computer Science Faculty of Exact Sciences University of Bejaia Bejaia06000 Algeria Laboratory of Networks and Distributed Systems Computer Science Department University of Ferhat Abbas Sétif1 Setif19000 Algeria Research Center on Scientific and Technical Information CERIST Ben-Aknoun Algiers16000 Algeria Department of Computer Science International Islamic University Malaysia Kuala Lumpur53100 Malaysia

ISBN: (纸本)9781450334587

This paper proposes an efficient non-blocking coordinated checkpointing algorithm for distributed message passing system which uses transitive dependency information. The processes synchronize their checkpointing activities so that a globally consistent set of checkpoints is always maintained in the system. These algorithms do not require channels to be FIFO (First-In, First-Out) and ensure that each checkpoint taken is part of a consistent global checkpoint. Our scheme also records a minimum number of checkpoints by making sure that only few processes are required to take checkpoints in any execution - it uses very less control-message cost when compared to other related works. © 2015 ACM.

关键词： Fault tolerance

来源：评论

学校读者我要写书评

暂无评论

The Interplay Between Timeliness and Scalability in Cloud Monitoring systems

The Interplay Between Timeliness and Scalability in Cloud Mo...

引用

IEEE Symposium on computers and Communication

作者： Guilherme da Cunha Rodrigues Rodrigo N. Calheiros Marcio Barbosa de Carvalho Carlos Raniery Paula dos Santos Lisandro Zambenedetti Granville Liane Tarouco Rajkumar Buyya Computer Networks Group Institute of Informatics Federal University of Rio Grande do Sul Cloud Computing and Distributed Systems (CLOUDS) Laboratory Department of Computing and Information Systems The University of Melbourne Department of Applied Computing Federal University of Santa Maria

ISBN: (纸本)9781467371957

Cloud computing is a groundbreaking solution to acquire computational resources on demand. To deliver high quality cloud services and provide features such as reduced costs and availability to customers, a cloud, like any other computational system, needs to be properly managed in accordance with its characteristics (e.g., scalability, elasticity, timeliness). In this scenario, cloud monitoring is a key to achieve it. To properly work, cloud monitoring systems need to meet several requirements such as scalability, accuracy, and timeliness. This paper aims to unveil the trade-off between timeliness and scalability. Evaluations demonstrate the mutual influence between scalability and timeliness based on monitoring parameters (e.g., monitoring topologies, frequency sampling). Results show that non-deep monitoring topologies and decreasing the frequency sampling assist to reduce the mutual influence between timeliness and scalability.

关键词： Scalability CLOUDS Clouds monitoring systems Monitoring parameters Cloud Computing

来源：评论

学校读者我要写书评

暂无评论

Adaptive Fault Tolerant Checkpointing Algorithm for Cluster Based Mobile Ad Hoc networks

引用

Procedia computer Science 2015年 73卷 40-47页

作者： Houssem Mansouri Nadjib Badache Makhlouf Aliouat Al-Sakib Khan Pathan Department of Computer Science Faculty of Exact Sciences University of Bejaia 06000 Bejaia Algeria Research Center on Scientific and Technical Information CERIST Ben-Aknoun Algiers 16000 Algeria Laboratory of Networks and Distributed Systems Computer Science Department University of Ferhat Abbas Sétif1 Setif 19000 Algeria Department of Computer Science International Islamic University Malaysia Kuala Lumpur 53100 Malaysia

Mobile Ad hoc NETwork (MANET) is a type of wireless network consisting of a set of self-configured mobile hosts that can communicate with each other using wireless links without the assistance of any fixed infrastructure. This has made possible to create a distributed mobile computing application and has also brought several new challenges in distributed algorithm design. Checkpointing is a well explored fault tolerance technique for the wired and cellular mobile networks. However, it is not directly applicable to MANET due to its dynamic topology, limited availability of stable storage, partitioning and the absence of fixed infrastructure. In this paper, we propose an adaptive, coordinated and non-blocking checkpointing algorithm to provide fault tolerance in cluster based MANET, where only minimum number of mobile hosts in the cluster should take checkpoints. The performance analysis and simulation results show that the proposed scheme performs well compared to works related.

关键词： MANET distributed mobile computing fault tolerance clustering checkpointing.

来源：评论

学校读者我要写书评

暂无评论

A proposed architecture for choice of switching paradigm in hybrid optical networks (OCS/OBS)

A proposed architecture for choice of switching paradigm in ...

引用

Conferencia Latinoamericana En Informatica (CLEI)

作者： Nathan Saraiva Túlio Falcão André Macêdo André Soares Distributed Systems and Computer Networks Laboratory Universidade Federal do Piauí Teresina Brasil Universidade Federal do Piaui Teresina PiauÃ BR

This paper proposes an architecture to classify traffic flows of IP access networks, and signalize to hybrid optical network the most appropriate paradigm, Optical Circuit Switching (OCS) and Optical Burst Switching (OBS), to be used. The concept of software defined networks, more specifically the OpenFlow technology, was used to enable the architecture. Furthermore, a performance evaluation and feasibility of the proposed architecture are presented through experiments.

关键词： IP networks Optical fiber networks computer architecture Optical switches Quality of service Switching circuits

来源：评论

学校读者我要写书评

暂无评论

Predicting cement compressive strength using double-layer multi-expression programming

Predicting cement compressive strength using double-layer mu...

引用

4th International Conference on Computational and Information Sciences, ICCIS 2012

作者： Zhang, Qingke Yang, Bo Wang, Lin Zhu, Fuxiang Shandong Province Key Laboratory of Network Based Intelligent Computing University of Jinan Jinan China Computer Networks and Distributed Systems Laboratory Beijing Institute Technology Beijing China

ISBN: (纸本)9780769547893

This paper presents a novel algorithm named Double-layer Multi-expression Programming (DMEP). Then DMEP model is applied to the prediction of 28-day Portland cement compressive strength. We compare DMEP model with other four soft computing models, namely Multi-Expression Programming model (MEP), Gene Expression Programming model (GEP), Neural networks model (NN) and Fuzzy logic model (FL) on 28-day cement strength prediction. The experiment results show that DMEP model has a lower rate in RMSE and MAE, and the prediction average percentage error of the cement strength data using DMEP model is reduced to 2.18%, which is lower than other four models. The results obtained from the computational tests demonstrate that DMEP is a promising technique for the prediction of cement strength. © 2012 IEEE.

关键词： Soft computing

来源：评论

学校读者我要写书评

暂无评论

GDCA: A distributed channel assignment mechanism for multi-radio multi-channel wireless mesh networks

引用

Journal of networks 2011年第2期6卷 303-310页

作者： Xia, Yan Zeng, Yingzhi Gong, Zhenghu Xin, Qin School of Computer National University of Defense Technology Changsha Hunan China School of Information Science and Engineering Hunan University Changsha Hunan China Networks and Distributed Systems Simula Research Laboratory Oslo Norway

Channel assignment is one of the most important problem in the research of the multi-radio multi-channel wireless mesh networks ((MRMC-WMN). Aiming at minimizing the overall network interference and optimizing the usage of channel resource, channel assignment problem must obey the constraint of limited radios and available channels for MRMC-WMN. The above optimization problem is known to be NP-complete. This paper focuses on the study of channel assignment in MRMC-WMN. We propose a new grid-loop-based echanism for dynamic channel assignment. Our mechanism exploits the group which we called grid-loop, which is constructed on distributed minimum spanning tree by self-organized. Our new GDCA scheme has many advantages over cluster-based scheme. The analysis and comparison demonstrates its feasibility, stability, cost-saving and efficiency. © 2011 ACADEMY PUBLISHER.

关键词： MESH networking

来源：评论

学校读者我要写书评

暂无评论

On the resource allocation and pricing strategies in Compute Clouds using bargaining approaches

On the resource allocation and pricing strategies in Compute...

引用

IEEE International Conference on networks

作者： Ganesh Neelakanta Iyer Bharadwaj Veeravalli Computer Networks and Distributed Systems (CNDS) Laboratory Department of Electrical and Computer Engineering National University of Singapore Singapore

In this paper, we consider addressing the resource allocation and pricing strategies in a Compute Cloud for both independent tasks and tasks from workflow schemes. Workflow scheduling of tasks is an important problem due to the fact that individual sub-tasks constituting the workflow may demand additional resources and hence may stall the entire process. We employ two axiomatic bargaining approaches (Nash Bargaining Solution (NBS) and Raiffa Bargaining Solution (RBS)) proposed in the literature to formulate the problem and derive an optimal solution for allocating virtual CPU instances in a Compute Cloud for both independent tasks and workflow tasks. We also analyze the effectiveness of our strategies via rigorous simulation experiments and we show that our strategies are adaptable to the requirements by the Cloud service providers (CSPs) in estimating the resource requirements. Further, we show that NBS ensures proportional fairness whereas RBS can handle real-time task arrivals and task dynamics. Finally we introduce the concept of asymmetric pricing scheme in which a user can specify his budget constraints and CSPs can attempt to maximize the revenue without sacrificing the performance. This asymmetric bargaining approach is an important contribution in this work which allows the CSP to choose different parameters such as deadline and/or budget requirements for deriving optimal resource allocation. The deadline based resource allocation is particularly useful for workflow-based applications which have tasks waiting for the completion of other tasks.

关键词： NIST Resource management Pricing Real time systems Equations Quality of service Games

来源：评论

学校读者我要写书评

暂无评论

ANCAEE: A Novel Clustering Algorithm for Energy Efficiency in Wireless Sensor networks

引用

Wireless Sensor Network 2011年第9期3卷 307-312页

作者： A. P. Abidoye N. A. Azeez A. O. Adesina K. K. Agbele Wireless Sensor Networks & Natural Language Research Group Grid Computing & Distributed Systems Laboratory Department of Computer Science University of the Western Cape

One of the major constraints of wireless sensor networks is limited energy available to sensor nodes because of the small size of the batteries they use as source of power. Clustering is one of the routing techniques that have been using to minimize sensor nodes’ energy consumption during operation. In this paper, A Novel Clustering Algorithm for Energy Efficiency in Wireless Sensor networks (ANCAEE) has been proposed. The algorithm achieves good performance in terms of minimizing energy consumption during data transmission and energy consumptions are distributed uniformly among all nodes. ANCAEE uses a new method of clusters formation and election of cluster heads. The algorithm ensures that a node transmits its data to the cluster head with a single hop transmission and cluster heads forward their data to the base station with multi-hop transmissions. Simulation results show that our approach consumes less energy and effectively extends network utilization.

关键词： Sensor Nodes Clusters Cluster heads Wireless Sensor networks Base Station Clustering Algorithms Energy Efficiency

来源：评论

学校读者我要写书评

暂无评论

Majority Consensus Protocol for Strong Consistency and High Availability

Majority Consensus Protocol for Strong Consistency and High ...

引用

ChinaGrid Annual Conference (ChinaGrid)

作者： Rishan Chen Jiaji Zhu Wenhui Yao Jian Zhou Bo Peng Laboratory of Computer Networks and Distributed Systems Peking University Beijing China Alibaba Inc. Beijing China

This paper presents a new approach to coordinating clusters of fail-over storage servers. The proposed protocol is designed for supporting large scale on-line storage services which positioned for strong consistency and high availability. Without sacrificing much performance, the protocol requires only one round-trip message communication with redundant servers. A distributed file system with single centralized master extended with this protocol confirms its efficiency as tens of thousands of operations per second and high availability of 99.9995%.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A comparison of Wireless Fidelity (Wi-Fi) fingerprinting techniques

A comparison of Wireless Fidelity (Wi-Fi) fingerprinting tec...

引用

International Conference on Information and Communication Technology Convergence (ICTC)

作者： Lersan B. Del Mundo Rafael Lean D. Ansay Cedric Angelo M. Festin Roel M. Ocampo Networks and Distributed Systems Laboratory Department of Computer Science University of the Philippines Diliman Quezon Philippines Computer Networks Lab Electrical and Electronics Engineering Institute University of the Philippines Diliman Quezon Philippines

Among several techniques proposed for indoor positioning using IEEE 802.11 Wireless Fidelity (Wi-Fi) based networks, those that rely on fingerprinting have been demonstrated to outperform those based on lateration, angulation, and cell of origin in terms of accuracy. We compare and evaluate three Wi-Fi fingerprinting techniques that use the K-Nearest Neighbor (k-NN), Naive Bayes Classifier (NBC) and Support Vector Machine (SVM) algorithms. Our experiments show that SVM-based fingerprinting outperformed both k-NN and NBC-based fingerprinting, achieving accuracies of 2 meters or better within our testbed.

关键词： Accuracy Support vector machines IEEE 802.11 Standards Vectors Databases Fingerprint recognition Kernel

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：