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5th Working IEEE/IFIP Conference on Software Architecture (WISCA 2005)

作者： Zhu, Liming Liu, Yan Gorton, Ian Bui, Ngoc Bao Empirical Software Engineering Program National ICT Australia Ltd. Australia School of Computer Science and Engineering University of New South Wales Australia Faculty of Information Technology University of Technology Sydney Australia

ISBN: (纸本)0769525482

This paper describes an approach for generating customized benchmark applications from a software architecture description using a Model Driven Architecture (MDA) approach. The benchmark generation and performance data capture tool implementation is based on widely used open source MDA frameworks. The business logic of the benchmark application is modeled in UML and generated by taking advantage of the existing generation "cartridges" so that the current component technology can be exploited in the benchmark. This greatly reduces the effort and expertise needed for benchmarking with complex component technology. We have also extended the MDA framework to model and generate a load testing suite and automatic performance measurement infrastructure. The approach complements current model-based performance prediction and analysis methods by generating the benchmark application from the same application architecture that the performance models are derived from. This provides the potential for tightly integrating runtime performance measurement with model-based prediction either for model validation or improving model prediction accuracy, We illustrate the approach using a case study based on EJB component technology.

关键词： Software architecture

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An integrated temporal partitioning and mapping framework for handling custom instructions on a reconfigurable functional unit

An integrated temporal partitioning and mapping framework fo...

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11th Asia-Pacific Conference on Advances in computer Systems Architecture, ACSAC 2006

作者： Mehdipour, Farhad Noori, Hamid Saheb Zamani, Morteza Murakami, Kazuaki Sedighi, Mehdi Inoue, Koji Computer and IT Engineering Department Amirkabir University of Technology Tehran Iran Department of Informatics Graduate School of Information Science and Electrical Engineering Kyushu University Japan

ISBN: (纸本)3540400567

Extensible processors allow customization for an application by extending the core instruction set architecture. Extracting appropriate custom instructions is an important phase for implementing an application on an extensible processor with a reconfigurable functional unit. Custom instructions (CIs) usually are extracted from critical portions of applications. This paper presents approaches for CI generation with respect to the RFU constraints to improve speedup of the extensible processor. First, our proposed RFU architecture for an adaptive dynamic extensible processor called AMBER is described. Then, an integrated temporal partitioning and mapping framework is presented to partition and map the CIs on the RFU. In this framework, a mapping aware temporal partitioning algorithm is used to generate CIs which are mappable on the RFU. Temporal partitioning iterates and modifies partitions incrementally to generate CIs. In addition, a mapping algorithm is presented which supports CIs with critical path length more than the RFU depth. © Springer-Verlag Berlin Heidelberg 2006.

关键词： program processors

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One-dimensional cutting stock problem with a given number of setups: A hybrid approach of metaheuristics and linear programming

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Journal of Mathematical Modelling and Algorithms 2006年第1期5卷 43-64页

作者： Umetani, Shunji Yagiura, Mutsunoti Ibaraki, Toshihide Department of Systems Engineering Faculty of Electro-Communications University of Electro-Communications Tokyo Japan Department of Computer Sciences and Mathematical Informatics Graduate School of Information Science Nagoya University Nagoya Japan Department of Informatics School of Science and Technology Kwansei Gakuin University Hyogo Japan

One-dimensional cutting stock problem (1D-CSP) is one of the representative combinatorial optimization problems which arises in many industrial applications. Since the setup costs for switching different cutting patterns become more dominant in recent cutting industry we consider a variant of 1D-CSP called the pattern restricted problem (PRP) to minimize the number of stock rolls while constraining the number of different cutting patterns within a bound given by users. For this problem we propose a local search algorithm that alternately uses two types of local search processes with the 1-add neighborhood and the shift neighborhood respectively. To improve the performance of local search we incorporate it with linear programming (LP) techniques to reduce the number of solutions in each neighborhood. A sensitivity analysis technique is introduced to solve a large number of associated LP problems quickly. Through computational experiments we observe that the new algorithm obtains solutions of better quality than those obtained by other existing approaches. © Springer 2006.

关键词： Linear programming Local search One-dimensional cutting stock problem Sensitivity analysis

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PORSCHE: A physical objects recommender system for cell phone users

PORSCHE: A physical objects recommender system for cell phon...

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2nd International Workshop on Personalized Context Modeling and Management for UbiComp Applications , ubiPCMM 2006

作者： Kawashima, Hideyuki Matsushita, Takaki Satake, Satoru Imai, Michita Shinagawa, Yasuhide Anzai, Yuichiro Keio University 3-14-1 Hiyoshi Yokohama Japan Hitachi Corporation Tokyo Japan Graduate School of Keio University 3-14-1 Hiyoshi Yokohama Japan Department of Information and Computer Science Faculty of Science and Technology Keio University Japan Department of Open and Environmental Science Graduate School of Keio University Japan

In web applications, recommendation algorithms such like collaborative filtering techniques are widely accepted for web users. To apply the algorithms for physical world objects such as books, three problems arise. The first problem is, how to input user ratings for physical objects? The second problem is, how to measure user interests for physical objects? The third problem is, how to consider the relationship between physical objects and users based on their locations? In order to solve the problems, this paper proposes a physical objects recommender system for cell phone users, PORSCHE. As for the first problem, PORSCHE estimates the user ratings using user behaviors for physical objects. As for the second problem, PORSCHE changes the user ratings using both user behaviors and elapsed time. As for the third problem, PORSCHE adjusts the user ratings by continually monitoring the distance between physical objects and users. The result of experiments simulating a bookstore shows that PORSCHE detects user interests accurately and it also recommends proper books for the user.

关键词： Recommender systems

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Advanced functions of the scanning laser range sensor for environment recognition in mobile robots

Advanced functions of the scanning laser range sensor for en...

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2006 IEEE International Conference on Multisensor Fusion and Integration for Intelligent Systems, MFI

作者： Kawata, Hirohiko Kamimura, Satofumi Ohya, Akihisa Iijima, Jun'ich Yuta, Shin'ich Department of Computer Science Graduate School of System and Information Engineering University of Tsukuba Tsukuba Japan Department of Intelligent Interaction Technologies Graduate School of System and Information Engineering University of Tsukuba Tsukuba Japan Mechanical Engineering Research Laboratory Hitachi Ltd. Hitachinaka Japan Faculty of Information Science Meisei University Hino Japan

ISBN: (纸本)1424405661

We have developed scanning laser range sensor called "SOKUIKI" sensor which is ultra-small scanning laser range sensor adopted for various types of mobile robots as we have already published. As a sensor for environment recognition, we thought the sensor must have not only outputting distance data but also another helpful function for mobile robots. So it was considered that what kind of advanced functions should be provided to SOKUIKI sensor. As a result two most important purposes were acquired. 1. Variation on its distance data and method to get the data. 2. The function for prevention of optical interference between sensors. These rolls were installed to the sensor, and confirmed their effect. This paper describes its result and proposes Sensor Communication Interface Protocol (SCIP) which is developed as new command system just for SOKUIKI sensor. © 2006 IEEE.

关键词： Mobile robots

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Analyzing and extending MUMCUT for fault-based testing of general boolean expressions

Analyzing and extending MUMCUT for fault-based testing of ge...

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6th IEEE International Conference on computer and information technology, CIT 2006

作者： Sun, Chang-Ai Dong, Yunwei Lai, R. Sim, K.Y. Chen, T.Y. Faculty of Information and Communication Technologies Swinburne University of Technology Vic. 3122 Australia Department of Computer Science and Computer Engineering La Trobe University Vic. 3086 Australia School of Engineering Swinburne University of Technology Kuching Sarawak Malaysia

ISBN: (纸本)076952687X

Boolean expressions are widely used to model decisions or conditions of a specification or source program. The MUMCUT, which is designed to detect seven common faults where Boolean expressions under test are assumed to be in Irredundant Disjunctive Normal Form (IDNF), is an efficient fault-based test case selection strategy in terms of the fault-detection capacity and the size of selected test suite. Folio-wing up our previous work that reported the fault-detection capacity of the MUMCUT when it is applied to general form Boolean expressions, in this paper we present the characteristic of the types of single faults committed in general Boolean expressions that a MUMCUT test suite fails to detect, analyze the certainty why a MUMCUT test suite fails to detect these types of undetected faults, and provide some extensions to enhance the detection capacity of the MUMCUT for these types of undetected faults. © 2006 IEEE.

关键词： Boolean functions

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A characterization of UML diagrams and their consistency

A characterization of UML diagrams and their consistency

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IEEE International Conference on Engineering of Complex computer Systems

作者： Xiaoshan Li Department of Computer and Information Science Faculty of Science and Technology University of Macau Macao China

In this paper, we focus on giving a formal semantics of sequence diagram of UML2.0. A model of a system comprises a set of program variables, a class diagram, a family of normal sequence diagrams, a family of normal state diagrams, and a state constraint. We then define their static and dynamic consistency supported by the formal semantics

关键词： Unified modeling language Object oriented modeling System analysis and design Design engineering information science Visualization Software systems Yarn Object oriented programming Books

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A High Availability and Low Cost Cluster Server for Small and Medium Enterprises

A High Availability and Low Cost Cluster Server for Small an...

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The Fifth International Conference on information and Management sciences

作者： Tung-Shou Chen Chin-Chiang Lin Puo-Iang Chen Yung-Hsing Chiu Graduate School of Computer Science and Information Technology National Taichung Institute of Technology Taichung 404 Taiwan China Graduate School of Computer Science and Information Technology National Taichung Institute of Technology Taichung 404 Taiwan China Graduate School of Computer Science and Information Technology National Taichung Institute of Technology Taichung 404 Taiwan China Graduate School of Computer Science and Information Technology National Taichung Institute of Technology Taichung 404 Taiwan China

Since an unexpected breakdown of network services could cause significant loss of business, each enterprise likes to provide the services constantly. Nowadays many small and medium enterprises possesses more than one network server. In many cases, there is nobody (or only one person) to manage the servers in these enterprises. In order to provide the network services constantly with low cost, we present a simplified cluster structure which is called the simplified high availability (SHA). SHA is structured by some freeware, and employs remote file systems synchronization program (rsync) to substitute a shared storage, such as a disk array. Hence it reduces the hardware cost. This function has been further applied to remote data backup successfully in this structure. During data backup, the transported data will be encrypted by secret shell (SSH). Therefore, the information in SHA can get better protection. Heartbeat performs breakdown server detection. SHA adopts Webmin, which is a web-based tool and has a graphical user interface (GUI), for the system administration. Thus the maintenance and configuration become easier, and the administrative cost is reduced. In this paper, the cost and availability of SHA are evaluated and compared whit SteelEye LifeKeeper and PolyServe Matrix HA. Our results illustrate that SHA has lower cost, and the availabilities of SHA, SteelEye LifeKeeper and PolyServe Matrix Server are comparable. Hence SHA could provide the high-availability services and reduce the total cost of ownership.

关键词： High Availability, Heartbeat, Cluster Server, Synchronous Remote Mirroring, Remote Data Backup.

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Resident participating GIS-based tsunami disaster control systems for local communities

Resident participating GIS-based tsunami disaster control sy...

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International Symposium on Communications and information Technologies

作者： Muramoto, Takashi Nakayama, Ken Kobayashi, Yoshitake Maekawa, Mamoru Faculty of Business Hachinohe University Aomori Japan Department of Information Systems Design Graduate School of Information Systems University of Electro-Communications Tokyo Japan Grid Computing and Distributed Systems (GRIDS) Laboratory Department of Computer Science and Software Engineering University of Melbourne Australia

ISBN: (纸本)9780780397408

We propose and experiment a Social Networking Service (SNS) for local communities for tsunami disaster control. It is an easy-to-use GIS-based system with powerful GIS analysis capabilities. One of the features of the system is resident participation. The GIS layer structure proposed in this paper nicely supports this user participation. The system architecture and the use of the system for tsunami disaster control are discussed. We report ongoing developments in Hachinohe-City, Japan.

关键词： GIS tsunami disaster control internet application system design

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Trace reduction for performance improvement assessment of message passing parallel programs

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Systems and computers in Japan 2006年第5期37卷 1-13页

作者： Ino, Fumihiko Kanbe, Yuki Okita, Masao Hagihara, Kenichi Graduate School of Information Science and Technology Osaka University Toyonaka 560-8531 Japan Toshiba Corporation Tokyo 105-0023 Japan Graduate School of Information Science and Technology Osaka University Toshiba Corporation Department of Computer Science Graduate School of Information Science and Technology Osaka University

This paper proposes a trace reduction method for assessing the improvability of the performance of message passing parallel programs. This assessment is based on a what-if prediction approach that forecasts future program performance, for example, the execution time if the target program is modified according to typical tuning techniques. Our method reduces the size of trace files by aggregating records of communications that do not change the predicted execution time. In order to avoid recording such useless information, our method automatically identifies them during program execution by comparing the occurrence time of sends and receives. In case studies, our method reduces the analysis time for what-if predictions as well as the size of trace files roughly by half. We also discuss the usability of our method. © 2006 Wiley Periodicals, Inc.

关键词： Parallel processing systems

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