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International Conference on Electrical Machines and systems

作者： Ikeda, Hidehiro Hanamoto, Tsuyoshi Tsuji, Teruo Dept. of Electrical Electronics and Computer Engineering Nishi-Nippon Institute of Technology Japan Graduate School of Life Science and Systems Engineering Kyushu Institute of Technology Japan Dept. of Information and Systems Engineering Fukuoka Institute of Technology Japan

ISBN: (纸本)9788986510089

In this paper, a robust vibration suppression control method for a multi-inertia (a three-inertia and a four-inertia) system by a digital modified-IPD controller is proposed. The controller consists of integral, proportional, derivative and time lag of first order element. We apply the Taguchi Method for the determination of the controller gains for several noise factors (load side inertias and stiffness of the shafts). To confirm the effectiveness of the controller structure with several conditions and the tuning method, we use a real-time simulator based on a RTLinux.

关键词： 3-intertia system 4-inertia system digital modified-IPD (m-IPD) controller Taguchi Method real-time simulator

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Tight bounds for a stochastic resource allocation algorithm using marginal revenue

Tight bounds for a stochastic resource allocation algorithm ...

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2007 AAAI Spring Symposium

作者： Plamondon, Pierrick Chaib-draa, Brahim Benaskeur, Abder Rezak Laval University Computer Science and Software Engineering Dept. Decision Support Systems Section Defence R and D Canada - Valcartier

ISBN: (纸本)9781577353119

This paper contributes to solve effectively stochastic resource allocation problems known to be NP-Complete. To address this complex resource management problem, previous works on pruning the action space of real-time heuristic search is extended. The pruning is accomplished by using upper and lower bounds on the value function. This way, if an action in a state has its upper bound lower than the lower bound on the value of this state, this action may be pruned in the set of possible optimal actions for the state. This paper extends this previous work by proposing tight bounds for problems where tasks have to be accomplished using limited resources. The marginal revenue bound proposed in this paper compares favorably with another approach which proposes bounds for pruning the action space. Copyright © 2007, American Association for Artificial Intelligence (***). All rights reserved.

关键词： Resource allocation

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Exploiting automatically inferred constraint-models for building identification in satellite imagery 07

Exploiting automatically inferred constraint-models for buil...

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Proceedings of the 15th annual ACM international symposium on Advances in geographic information systems

作者： Michalowski, Martin Knoblock, Craig A. Bayer, Ken Choueiry, Berthe Y. Information Sciences Institute Dept. of Computer Science University of Southern California United States Constraint Systems Laboratory Dept. of Computer Science and Engineering University of Nebraska-Lincoln United States

ISBN: (纸本)9781595939142

The building identification (BID) problem is based on a process that uses publicly available information to automatically assign addresses to buildings in satellite imagery. In previous work, we have shown the advantages of casting the BID problem as a Constraint Satisfaction Problem (CSP) using the same generic constraint-model to represent all problem instances. However, a generic model is unable to represent with the necessary precision the addressing variations throughout the world, limiting the applicability of our previous approach. In this paper, we describe the end-to-end process used to solve the BID with a new model-generation technique that uses instance-specific information to automatically infer a representative constraint model of the BID. This inferred model is used by our custom constraint solver to identify buildings in satellite imagery more efficiently and with higher precision than using a single model. We evaluate our approach on El Segundo California, and empirically demonstrate its effectiveness for geographic areas larger than previously tested. We conclude with a discussion of the generality of our approach, and present directions for future work. © 2007 ACM.

关键词： Constraint satisfaction problems

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Estimating the required code inspection team size

Estimating the required code inspection team size

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IEEE International Conference on software - science, Technology and engineering, SwSTE'07

作者： Kantorowitz, E. Kuflik, T. Raginsky, A. Computer Science Dept. Technion Ort Braude College Management Information Systems Dept. University of Haifa Faculty of Industrial Engineering and Management Technion

ISBN: (纸本)0769530214

Code inspection is considered an efficient method for detecting faults in software code documents. The number of faults not detected by inspection should be small. Several methods have been suggested for estimating the number of undetected faults. These methods include the fault injection method that is considered to be quite laborious, capture recapture methods that avoid the problems of code injection and the Detection Profile Method for cases where capture recapture methods do not provide sufficient accuracy. The Kantorowitz estimator is based on a probabilistic model of the inspection process and enables the estimating the number of inspectors required to detect a specified fraction of all the faults of a document as well as the number of undetected faults. This estimator has proven to be satisfactory in inspection of user requirements documents. The experiments reported in this study suggest that it is also useful for code inspection. © 2007 IEEE.

关键词： Inspection

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First year students' impressions of pair programming in CS1 07

First year students' impressions of pair programming in CS1

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3rd International Computing Education Research Workshop, ICER'07

作者： Simon, Beth Hanks, Brian Computer Science and Engineering Dept. University of California San Diego San Diego CA 92093-0404 Computer Science Information Systems Dept. Fort Lewis College Durango CO 81301

ISBN: (纸本)9781595938411

Pair programming, as part of the Agile Development process, has noted benefits in professional software development scenarios. These successes have led to a rise in use of pair programming in educational settings, particularly in CS1. Specifically [6] has shown that students using pair programming in CS1 do better in a CS2 class (with solo programming) than students who don't pair in CS1. This paper seeks to address a similar question, but from a qualitative, student-focused approach. How do students define, experience and value the pair programming experience? How do they experience and value it compared to solo programming? Does pairing in CS1 impact their confidence in their abilities? We report on semi-structured interviews with eleven subjects from two institutions where pair programming was used in CS1 and solo programming was used in the next course. Many of the responses met our expectations: students get stuck less and explore more ideas while pairing, and believe that pair programming helped them in CS1. Other responses were more surprising. Students reported that when solo programming that they were more confident and understood their programs better. Many students also said that they started work on their assignments earlier when soloing. Students also continue to use other students as resources even when working "solo". Copyright 2007 ACM.

关键词： Program debugging

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Automated software product line engineering and product derivation

Automated software product line engineering and product deri...

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40th Annual Hawaii International Conference on System sciences 2007, HICSS'07

作者： Gomaa, Hassan Shin, Michael E. Dept. of Information and Software Engineering George Mason University Fairfax VA 22030-4444 Dept. of Computer Science Texas Tech. University Lubbock TX 79409-3104

ISBN: (纸本)0769527558

This paper describes a prototype automated software product line engineering environment, in which a multiple view model of the product line architecture and components are developed and stored in a product line repository. Automated software product derivation consists of tailoring the product line architecture given the product features and selecting the components to be included in the product. The automated environment is built on top of Rational Rose RT. Automated support is provided for developing multiple product line views, using the feature model as the unifying view, an underlying product line meta-model that provides a schema for a product line repository, support for consistency checking among the multiple views, and support for feature-based product line derivation. © 2007 IEEE.

关键词： software prototyping

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Improvements in SCADA and DCS systems security

Improvements in SCADA and DCS systems security

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22nd International Conference on computers and Their Applications 2007, CATA 2007

作者： Graham, James H. Mostafa, Mostafa S. Arazi, Benjamin Tantawy, Ashraf Hieb, Jeffrey Ralston, Patricia Patel, Sandip C. Computer Engineering and Computer Science Dept. Intelligent Systems Research Laboratory University of Louisville Louisville KY 40292 United States Dept. of Computer Science Western Kentucky University Bowling Green KY United States Dept. of Chemical Engineering University of Louisville Louisville KY United States Dept. of Information Science and Systems Morgan State University Baltimore MD United States

ISBN: (纸本)9781604237559

Supervisory control and data acquisition (SCADA) systems monitor, regulate, gather information from, and control the computer field units that control much of our industrial and utility infrastructure. Distributed Control systems (DCS) is a broader term used in the chemical and process industries, and includes systems implemented with SCADA networks as their backbone. Security was not a high priority in the design of much of this equipment because it used obscure protocols and relatively secure, dedicated, communications links. This has all changed in recent years as many SCADA and DCS systems are now accessible, either deliberately or through system design flaws, through the public Internet. In this paper a new approach to the issue of intrusion detection and prevention in DCS and SCADA has been developed. Here, the cyber vulnerabilities specifically applicable to the control of chemical plants are directly addressed, rather than adopting in this environment generic solutions. Abnormal behavior signatures are directly associated with adaptive traffic matrix deviations. Spatial and temporal correlation techniques are then applied to enhance intrusion detection. This paper also discusses an experimental test-bed for generating attack data for a wide variety of SCADA and DCS configurations. Copyright © 2007 by the International Society for computers and Their Applications (ISCA).

关键词： Intrusion detection

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A proposal of service system development framework with multi-agents

A proposal of service system development framework with mult...

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2007 International Conference on Parallel Processing Workshops, ICPPW 2007

作者： Sawamoto, Jun Tilwaldi, Dilmurat Okawa, Tsutomu Tsuji, Hidekazu Koizumi, Hisao Faculty of Software and Information Science Iwate Prefectural University Dept. of Computers and Systems Engineering Graduate School Tokyo Denki University Information Technology Center Mitsubishi Electric Corporation Dept. of Information Media Technology School of Information Technology and Electronics Tokai University

ISBN: (纸本)0769529348

The research and development results of agent technology are awaited as the software solution with autonomy and social ability, which can provide the way to realize social activities on the Internet. However, the current status of the agent research is that research is for a specific application domain and is not so much generalized , and it is hard to apply the framework of the existing research to other fields. Moreover, it is thought that practical usage of agent is in immature state that there are few practical application examples and the system development methodology is not sufficient. In this research, the problem solving system by the multi-agents is first shown as an application development framework by the agents. Then, we present usage of templates of the agent model and the task model as the development support technique. And the evaluation according to an application construction experiment in the field of remote product management is discussed. © 2007 IEEE.

关键词： Problem solving

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Privacy-preserving two-party K-means clustering via secure approximation

Privacy-preserving two-party K-means clustering via secure a...

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21st International Conference on Advanced information Networking and ApplicationsWorkshops/Symposia, AINAW'07

作者： Su, Chunhua Bao, Feng Zhou, Jianying Takagi, Tsuyoshi Sakurai, Kouichi Dept. of Computer Science and Communication Engineering Kyushu University Japan Systems and Security Department Institute for Infocomm. Research Singapore Singapore School of Systems Information Science Future University-Hakodate Japan

ISBN: (纸本)0769528473

K-means clustering is a powerful and frequently used technique in data mining. However, privacy breaching is a serious problem if the k-means clustering is used without any security treatment, while privacy is a real concern in many practical applications. Recently, four privacypreserving solutions based on cryptography have been proposed by different researchers. Unfortunately none of these four schemes can achieve both security and completeness with good efficiency. In this paper, we present a new scheme to overcome the problems occurred previously. Our scheme deals with data standardization in order to make the result more reasonable. We show that our scheme is secure and complete with good efficiency. © 2007 IEEE.

关键词： Security of data

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Extending reusable asset specification to improve software reuse

Proceedings of the ACM Symposium on Applied Computing

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Proceedings of the ACM Symposium on Applied Computing 2007年 1473-1478页

作者： Park, Soojin Park, Sooyong Sugumaran, Vijayan Software Engineering Lab. Dept. of Computer Science Sogang University 1 Shinsoo-Dong Mapo-Ku Seoul 121-742 Korea Republic of Decision and Information Sciences School of Business Administration Oakland University Rochester MI 48309 United States

ISBN: (纸本)1595934804;9781595934802

Even though many approaches for reuse have been introduced, software engineers are still hesitating to reuse existing software components. Two problems are the root cause of this situation. One is the difficulty in knowing whether the required software components are available. The other is the lack of information as to how to reuse the acquired components. To solve this problem, we introduce an extension to Reusable Asset Specification (RAS) and a process for supporting efficient reuse. We explain the process with a case study and evaluate through feedback from software engineers participating the case study. Copyright 2007 ACM.

关键词： computer software reusability

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