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2009 IEEE Conference on Commerce and Enterprise Computing, CEC 2009

作者： Anandasivam, Arun Buschek, Stefan Buyya, Rajkumar Institute for Information Systems and Management University of Karlsruhe Germany Laboratory Department of Computer Science and Software Engineering University of Melbourne Australia

ISBN: (纸本)9780769537559

Cloud resource providers in a market face dynamic and unpredictable consumer behavior. The way, how prices are set in a dynamic environment, can influence the demand behavior of price sensitive customers. A Cloud resource provider has to decide on how to allocate his scarce resources in order to maximize his profit. The application of bid price control for evaluating incoming service requests is a common approach for capacity control in network revenue management. In this paper we introduce a customized version of the concept of self-adjusting bid prices and apply it to the area of Cloud Computing. Furthermore, we perform a simulation in order to test the efficiency of the proposed model. © 2009 IEEE.

关键词： Consumer behavior

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A prognosis case study for electrolytic capacitor degradation in DC-DC converters

A prognosis case study for electrolytic capacitor degradatio...

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Annual Conference of the Prognostics and Health Management Society, PHM 2009

作者： Kulkarni, Chetan S. Biswas, Gautam Koutsoukos, Xenofon Institute for Software Integrated Systems Department of Electrical Engineering and Computer Science Vanderbilt University NashvilleTN37235 United States

ISBN: (纸本)9781936263004

This paper proposes a model based approach for prognosis of DC-DC power converters. We briefly review the prognosis process, and present an overview of different approaches that have been developed. We study the effects of capacitor degradation on DC-DC converter performance by developing a combination of a thermal model for ripple current effects and a physics of failure model of the thermal effects on capacitor degradation. The derived degradation model of the capacitor is reintroduced into the DC-DC converter model to study changes in the system performance using Monte Carlo methods. The simulation results observed under different conditions and experimental setups for model verification are discussed. The paper concludes with comments and future work to be done.

关键词： DC-DC converters

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Composite hypothesis testing with intermittent observations

Composite hypothesis testing with intermittent observations

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作者： Tantawy, Ashraf Koutsoukos, Xenofon Biswas, Gautam Institute for Software Integrated Systems Department of Electrical Engineering and Computer Science Vanderbilt University Nashville TN 37235 United States

ISBN: (纸本)9783902661463

In this paper, we consider the detection problem with intermittent observations, due to the unreliable shared communication link between local sensors and the fusion center. Detection performance is analyzed using Neyman-Pearson criterion of maximizing the probability of detection, for a given probability of false alarm. The detector performance is compared, with and without intermittent observations, and a formal approach is presented to restore the original detector performance. © 2009 IFAC.

关键词： Wireless sensor networks

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On the application of predictive control techniques for adaptive performance management of computing systems

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IEEE Transactions on Network and Service Management 2009年第4期6卷 212-225页

作者： Abdelwahed, Sherif Bai, Jia Su, Rong Kandasamy, Nagarajan Department of Electrical and Computer Engineering Mississippi State University Mississippi State MS 39759 United States Institute for Software Integrated Systems Vanderbilt University Nashville TN 37235 United States Department of Mathematics and Computer Science Eindhoven Univ. of Technology Eindhoven Netherlands Department of Electrical and Computer Engineering Drexel University Philadelphia PA 19104 United States

This paper addresses adaptive performance management of real-time computing systems. We consider a generic model-based predictive control approach that can be applied to a variety of computing applications in which the system performance must be tuned using a finite set of control inputs. The paper focuses on several key aspects affecting the application of this control technique to practical systems. In particular, we present techniques to enhance the speed of the control algorithm for real-time systems. Next we study the feasibility of the predictive control policy for a given system model and performance specification under uncertain operating conditions. The paper then introduces several measures to characterize the performance of the controller, and presents a generic tool for system modeling and automatic control synthesis. Finally, we present a case study involving a real-time computing system to demonstrate the applicability of the predictive control framework. © 2009 IEEE.

关键词： Real time systems

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The design of an autonomic element for managing emerging networks and services

The design of an autonomic element for managing emerging net...

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2009 International Conference on Ultra Modern Telecommunications and Workshops

作者： Strassner, John Hong, James Won-Ki Van Der Meer, Sven Department of Computer Science and Engineering Pohang University of Science and Technology Pohang Korea Republic of Telecommunications Software and Systems Group Waterford Institute of Technology Waterford Ireland

ISBN: (纸本)9781424439416

Next generation networks, as well as the Future Internet, aim to provide context-sensitive business services that adapt to changing user needs, business goals, and environmental conditions. This paper describes the composition of an Autonomic Element, as a fundamental part of an autonomic architecture, which uses information models and semantics to link the business services with the services provided by the underlying network devices. This linkage is inherently contextaware, and allows context changes to determine the impact of changes in the network towards business services and vice versa. The described Autonomic Element is a programmable toolbox supporting the clean-slate approach as well as evolutionary approaches for the Future Internet. ©2009 IEEE.

关键词： Next generation networks

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Dependable workflow scheduling in global grids

Dependable workflow scheduling in global grids

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2009 10th IEEE/ACM International Conference on Grid Computing, Grid 2009

作者： Rahman, Mustafizur Ranjan, Rajiv Buyya, Rajkumar Grid Computing and Distributed Systems Laboratory Department of Computer Science and Software Engineering University of Melbourne Australia Service Oriented Computing Research Group School of Computer Science and Engineering University of New South Wales Australia

ISBN: (纸本)9781424451494

In this paper, a reputation-based Grid workflow scheduling algorithm is proposed to counter the effect of inherent unreliability and temporal characteristics of computing resources in large scale, decentralized Grid overlays. The proposed approach builds upon structured peer-to-peer indexing and overlay networking techniques to create a scalable wide-area networking of Grid sites for supporting dependable scheduling of applications. The scheduling algorithm considers reliability of a Grid resource as a statistical property, which is globally computed in the decentralized Grid overlay based on dynamic feedbacks or reputation scores assigned by individual service consumers (Grid Resource Brokers). The proposed algorithm can dynamically adapt to changing resource conditions and offer significant performance gains as compared to traditional approaches in the event of unsuccessful job execution or resource failure. We evaluate and demonstrate the feasibility of our approach through an extensive trace driven simulation. The results show that our scheduling technique can reduce the makespan up to 50% and successfully isolate the failure-prone resources from the system. © 2009 IEEE.

关键词： Scheduling algorithms

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A distributed heuristic for decentralized workflow scheduling in global grids

A distributed heuristic for decentralized workflow schedulin...

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2009 10th IEEE/ACM International Conference on Grid Computing, Grid 2009

ISBN: (纸本)9781424451494

Efficient scheduling is a key concern for the effectual execution of performance driven Grid applications, such as workflows. Many list heuristics have been developed for scheduling workflows in centralized Grid environment. However, in this paper, we present a distributed list heuristic for decentralized scheduling of workflow applications in global Grids. The simulation results show that the proposed scheduling approach is scalable with respect to increased workload on the system. © 2009 IEEE.

关键词： Scheduling

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Architecture Based Reliability and Testing Estimation for Mobile Applications

Architecture Based Reliability and Testing Estimation for Mo...

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作者： Wadhwani, Vickey Memon, Fiaz Hameed, M. Muzaffar Blekinge Institute of Technology Department of Systems and Software Engineering Sweden University of Sindh Institute of Mathematics and Computer Science Jamshoro Pakistan

ISBN: (纸本)9783540898528

We propose an architecture-based testing and reliability framework for mobile applications. During our literature study, we explored some of the software testing and reliability techniques available, as well as investigating the techniques that are being used by industry. This paper presents case studies of two companies that are developing mobile applications. These are helpful for finding the strengths and weaknesses of existing software testing and reliability techniques. In light of these strengths and weaknesses, we propose a framework of architecture-based software testing and reliability estimation for mobile applications. © Springer-Verlag Berlin Heidelberg 2008.

关键词： software reliability

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Particle swarm optimization for gene selection in classifying cancer classes

Particle swarm optimization for gene selection in classifyin...

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作者： Mohamad, M.S. Omatu, S. Deris, S. Yoshioka, M. Department of Computer Science and Intelligent Systems Graduate School of Engineering Osaka Prefecture University Sakai Osaka 599-8531 Japan Department of Software Engineering Faculty of Computer Science and Information Systems Universiti Teknologi Malaysia 81310 Skudai Johore Malaysia

ISBN: (纸本)9784990288037

The application of microarray data for cancer classification has recently gained in popularity. The main problem that needs to be addressed is the selection of a smaller subset of genes from the thousands of genes in the data that contributes to a disease. This selection process is difficult due to the availability of a small number of samples compared to the huge number of genes, many irrelevant genes, and noisy genes. Therefore, this paper proposes an improved binary particle swarm optimization to select a near-optimal (smaller) subset of informative genes that is relevant for cancer classification. Experimental results show that the performance of the proposed method is superior to the experimental method and other related previous works in terms of classification accuracy and the number of selected genes. ©ISAROB 2009.

关键词： Genes

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Scheduling parallel applications on Utility Grids: Time and cost trade-off management

Scheduling parallel applications on Utility Grids: Time and ...

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32nd Australasian computer science Conference, ACSC 2009

作者： Garg, Saurabh Kumar Buyya, Rajkumar Siegel, H.J. Grid Computing and Distributed Systems Laboratory Department of Computer Science and Software Engineering University of Melbourne VIC 3010 Australia Electrical and Computer Engineering Department Colorado State University Fort Collins United States Computer Science Department Colorado State University Fort Collins United States

ISBN: (纸本)9781920682729

With the growth of Utility Grids and various Grid market infrastructures, the need for efficient and cost effective scheduling algorithms is also increasing rapidly, particularly in the area of meta-scheduling. In these environments,users not only may have conflicting requirements with other users, but also they have to manage the trade-off between time and cost such that their applications can be executed most economically in the minimum time. Thus, choosing of the best Grid resources becomes a challenge in such a competitive market. This paper presents two novel heuristics for scheduling parallel applications on Utility Grids that manage and optimize the trade-off between time and cost constraints. The performance of the heuristics is evaluated through extensive simulations of a real-world environment with real parallel workload models to demonstrate the practicality of our algorithms. We compare our scheduling algorithms against other common algorithms used by current meta-schedulers. The results shows that our algorithms outperform other algorithms by minimizing the time and cost of application execution on Utility Grids. Copyright © 2009, Australian computer Society, Inc.

关键词： Scheduling algorithms

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