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International Conference on computer and Information Technology (CIT)

作者： Panida Songram Veera Boonjing Software Systems Engineering Laboratory Department of Mathematics and Computer Science Faculty of Science King Mongkut''s Institute of Technology Ladkrabang Bangkok Thailand Department of Computer Science Faculty of Informatics Mahasarakham University Maha sarakham Thailand

In this paper, we proposed an efficient algorithm, TOPK_CLOSED, for mining top-k closed itemsets. This algorithm mines top-k closed itemsets using best-first search. The closed itemsets with the highest supports are firstly found from this algorithm. Consequently, the method quickly finds top-k closed itemsets, which leads to an efficient pruning unnecessary itemsets and stop mining rapidly. In addition, this algorithm can generate closed itemsets without keeping candidates in main memory.

关键词： Itemsets Generators Data mining Pediatrics Complexity theory Algorithm design and analysis Databases

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Jeeva: Enterprise Grid Enabled Web Portal for Protein Secondary Structure Prediction

Jeeva: Enterprise Grid Enabled Web Portal for Protein Second...

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International Conference on Advanced Computing and Communications (ADCOM)

作者： Chao Jin Jayavardhana Gubbi Rajkumar Buyya Marimuthu Palaniswami Grid Computing and Distributed Systems (GRIDS) Laboratory Department of Computer Science and Software Engineering University of Melbourne Melbourne VIC Australia Department of Electrical and Electronic Engineering University of Melbourne Melbourne VIC Australia

This paper presents a grid portal for protein secondary structure prediction developed by using services of Aneka, a .NET-based enterprise grid technology. The portal is used by research scientists to discover new prediction structures in a parallel manner. An SVM (support vector machine)-based prediction algorithm is used with 64 sample protein sequences as a case study to demonstrate the potential of enterprise grids.

关键词： Portals Protein engineering Grid computing Prediction algorithms Support vector machines Distributed computing Environmental management Chaos computer science History

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Advanced QoS methods for Grid workflows based on meta-negotiations and SLA-mappings

Advanced QoS methods for Grid workflows based on meta-negoti...

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Workshop on Workflows in Support of Large-Scale science, WORKS

作者： Ivona Brandic Dejan Music Schahram Dustdar Srikumar Venugopal Rajkumar Buyya Institute of Information Systems University of Technology Vienna Austria Grid Computing and Distributed System (GRIDS) Laboratory Department of Computer Science and Software Engineering University of Melbourne Australia

In novel market-oriented resource sharing models, resource consumers pay for the resource usage and expect that non-functional requirements for the application execution, termed as quality of service (QoS), are satisfied. QoS is negotiated between two parties following the specific negotiation protocols and is recorded using service level agreements (SLAs). However, most of the existing work assumes that the communication partners know about the SLA negotiation protocols and about the SLA templates before entering the negotiation. However, this is a contradictory assumption, if we consider computational grids and novel, commercially oriented computing clouds where consumers and providers meet each other dynamically. In this paper, we present novel meta-negotiation and SLA-mapping solutions for grid workflows bridging the gap between current QoS models and grid workflows, one of the most successful grid programming paradigms. We illustrate the open research issues with a real world case study. Thereafter, we present document models for the specification of meta-negotiations and SLA-mappings. We discuss the architecture for the management of meta-negotiations and SLA-mappings as well as integration of the architecture into a grid workflow management framework.

关键词： Quality of service Protocols Grid computing Cloud computing Resource management Information systems Laboratories computer science software engineering Application software

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Development and control of dolphin-like underwater vehicle

Development and control of dolphin-like underwater vehicle

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American Control Conference (ACC)

作者： Yonghui Hu Long Wang Junzhi Yu Jiyan Huo Yingmin Jia Languages Informatics Systems and Software Engineering Department Faculty of Computer Science Peking University Beijing China Laboratory of Complex Systems and Intelligence Science Institute of Automation Chinese Academy of Sciences Beijing China Seventh Research Division Beihang University Beijing China

This paper is concerned with prototype development and motion control of a dolphin-like underwater robot. The propulsion and maneuvering of the robotic dolphin are realized with the flapping motion of the mechanical flippers and the combined heaving and pitching motions of the fluke. Mechanical design and control of the flipper apparatus and the flexible tail mechanism are presented. Through coordinated control of the propulsors, several swimming movements are designed. Preliminary experimental results verify the effectiveness of the proposed design scheme.

关键词： Underwater vehicles Dolphins Robot kinematics Propulsion Marine animals Motion control Tail Robot sensing systems Control systems Automotive engineering

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Solving Sum and Product Riddle via BDD-Based Model Checking

Solving Sum and Product Riddle via BDD-Based Model Checking

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IEEE WIC ACM International Conference on Web Intelligence (WI)

作者： Xiangyu Luo Kaile Su Abdul Sattar Yan Chen Tsinghua National Laboratory for Information Science and Technology Key Laboratory of Security for Information System of Ministry of Education School of Software Tsinghua University Beijing China Department of Computer Science Guilin University of Electronic and Technology Guilin China School of Electronics Engineering and Computer Science Peking University Beijing China Institute for Integrated and Intelligent Systems Griffith University Brisbane QLD Australia

We model the sum and product riddle in public announcement logic, which is interpreted on an epistemic Kripke model. The model is symbolically represented as a finite state program with n agents. A model checking method to the riddle is developed by using the BDD-based symbolic model checking algorithm for logic of knowledge we developed in [7]. The method is implemented by extending the model checker MCTK [7] and then the solution of the riddle is verified successfully.

关键词： Data structures Boolean functions IEEE news Intelligent agent Educational technology Automatic logic units Laboratories computer science Information science computer security

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Pointwise Logic on Completely Distributive Lattices and Approximate Reasoning

Pointwise Logic on Completely Distributive Lattices and Appr...

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International Conference on Fuzzy systems and Knowledge Discovery (FSKD)

作者： Yalin Zheng Guang Yang Jing Zheng Jinsheng Xing State Key Laboratory for Intelligent Technology and Systems Department of Automation Faculty of Information Science and Technology Tsinghua University Beijing China Research Center of Intelligent Information Technology Department of Computer Science and Technology Faculty of Software Dongguan University of Science and Technology Dongguan China Research Center of Dongguan Economy Department of Economy and Commerce Dongguan University of Science and Technology Dongguan China Faculty of Mathematics and Computer Science Shanxi Normal University Linfen China Research Center of System Engineering Faculty of Electronic and Information Engineering Xi'an Jiaotong University Xi'an China

In this paper, we propose the basic framework of point- wise topological logic on completely distributive lattices and explore approximate reasoning in it. The logic of this paper is based on pointwise characterization, therefore the pointwise conception is pervasive. We explore approximate reasoning in abstract logical framework Fl on completely distributive lattice L. We propose the structure of point- wise topological logic F TL , the structure of matching function sigma. and the structure of matching neighborhood group. We investigate approximate reasoning in pointwise topological logic F TL with matching function sigma, develop pointwise topological algorithm of simple approximate reasoning, introduce the essential characteristics of this scheme.

关键词： Lattices Fuzzy logic computer science Knowledge engineering Fuzzy systems Information technology Laboratories Intelligent systems Automation Information science

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A grid based e-Research platform for clinical management in the human respiratory and vascular system

Conferences in Research and Practice in Information Technolo...

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Conferences in Research and Practice in Information Technology Series 2007年 68卷 11-17页

作者： Cheung, Sherman Chu, Xingchen Xu, Shengjin Buyya, Rajkumar Tu, Jiyuan School of Aerospace Mechanical and Manufacturing Engineering RMIT University VIC 3083 Australia Grid Computing and Distributed Systems Laboratory Department of Computer Science and Software Engineering The University of Melbourne VIC 3010 Australia

ISBN: (纸本)192068249X

A Grid based e-Research platform is being developed for providing a simulation-based virtual reality environment for clinical management and therapy treatment. The development of this platform involves cross-disciplinary experts aiming at combining the state-of-the-art Computational Fluid Dynamics (CFD) analysis tools into clinical management system. These fluid dynamic studies support the physician and surgeon with recommendations for the possible range of treatment and operation techniques. The platform will consist of a cluster of computing nodes, a middleware (Grid management layer), internet accessible tomography data and CFD analysis tools, and a tailored graphical user interface (GUI) application for various experts. In future, this platform will provide the novel creation of a prototype virtual reality model environment that links each technical modular consisting of a consolidation system with flexible interface model for exchanging data efficiently. Furthermore, besides allowing expeditious sharing of data and analytical tools, it will also furnish a foundation for cross-disciplinary collaboration and will definitely foster further advancement of related biomechanics researches. © 2007, Australian computer Society, Inc.

关键词： Grid computing

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Towards re-engineering legacy systems for assured dynamic adaptation

Towards re-engineering legacy systems for assured dynamic ad...

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ICSE 2007 Workshops: International Workshop on Modeling in software engineering, MISE'07

作者： Zhang, Ji Cheng, Betty H. C. Software Engineering and Network Systems Laboratory Department of Computer Science and Engineering Michigan State University East Lansing MI 48824

ISBN: (纸本)0769529534

Increasingly, software must adapt its behavior in response to changes in the supporting computing, communication infrastructure, and in the surrounding physical environment. Since most existing software was not designed to adapt, research on techniques to make legacy software dynamically adaptive has gained increasing interest. Assurance is crucial for adaptive software to fulfill its intended purpose. Correctness is even more critical if it is to be applied in high assurance systems. This paper proposes a model-driven approach to introduce dynamic adaptation to non-adaptive legacy systems while maintaining assurance properties. An aspect-oriented technique is applied to achieve separation of concerns in the implementation. © 2007 IEEE.

关键词： Legacy systems

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Integrated risk analysis for a commercial computing service

Integrated risk analysis for a commercial computing service

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21st International Parallel and Distributed Processing Symposium, IPDPS 2007

作者： Yeo, Chee Shin Buyya, Rajkumar Grid Computing and Distributed Systems Laboratory Department of Computer Science and Software Engineering University of Melbourne Vic. 3010 Australia

ISBN: (纸本)1424409101

Utility computing has been anticipated to be the next generation of computing usage. Users have the freedom to easily switch to any commercial computing service to complete jobs whenever the need arises and simply pay only on usage, without any investment costs. A commercial computing service however has certain objectives or goals that it aims to achieve. In this paper, we identify three essential objectives for a commercial computing service: (i) meet SLA, (ii) maintain reliability, and (iii) earn profit. This leads to the problem of whether a resource management policy implemented in the commercial computing service is able to meet the required objectives or not. So, we also develop two evaluation methods that are simple and intuitive: (i) separate and (ii) integrated risk analysis to analyze the effectiveness of resource management policies in achieving the required objectives. Evaluation results based on five policies successfully demonstrate the applicability of separate and integrated risk analysis to assess policies in terms of the required objectives. © 2007 IEEE.

关键词： Utility programs

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Authentication in reprogramming of sensor networks for mote class adversaries

Authentication in reprogramming of sensor networks for mote ...

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21st International Parallel and Distributed Processing Symposium, IPDPS 2007

作者： Limin, Wang Kulkarni, Sandeep S. Software Engineering and Network Systems Laboratory Department of Computer Science and Engineering Michigan State University East Lansing MI 48824 United States

ISBN: (纸本)1424409101

Reprogramming is an essential service for wireless sensor networks. Authenticating reprogramming process is important as sensors need to verify that the code image is truly from a trusted source. There are two ways to achieve authentication: public key based and symmetric key based. Although previous work has shown that public key authentication is feasible on sensor nodes if used sparingly, it is still quite expensive compared to symmetric key based approach. In this paper, we propose a symmetric key based protocol for authenticating reprogramming process. Our protocol is based on the secret instantiation algorithm from [5, 11], which requires only O(log n) keys to be maintained at each sensor. We integrate this algorithm with the existing reprogramming protocol. Through simulation, we show that it is able to authenticate reprogramming process at very low communication cost, and has very short delay. ©2007 IEEE.

关键词： Sensor networks

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