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International Conference on Broadband, Wireless Computing, Communication and Applications

作者： Yan, Gongjun Rawat, Danda B. Bista, Bhed B. Department of NIMS Indiana University Kokomo Kokomo IN 46904-9003 United States Dept. of Electrical and Computer Engineering Old Dominion University Norfolk VA 23529 United States Faculty of Software and Information Science Iwate Prefectural University 020-0193 Japan

ISBN: (纸本)9780769542362

The vehicular wireless ad hoc network (VANET), a specialized wireless sensor network, is booming to provide safety and comfort for passengers. Special features of VANET, such as high mobility nodes and large scale node population, make the Quality of Service (QoS) task extremely challenging. To provide Quality of Service (QoS) to traffic safety and entertainment applications in VANET, we propose a routing protocol which improves QoS of VANET in terms of delay, response time and throughput. The proposed scheme disseminates packets among the links which has longer expiration time calculated by using relative velocity vectors. The optimal routing path and a backup routing path are selected by balancing stability, cost and delay. Besides, the proposed scheme gracefully switches to a new optimal routing path before the current routing path is broken. Simulation results indicate that the proposed protocol improves the bandwidth, routing duration, and response time. © 2010 IEEE.

关键词： Quality of service

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A Boosting Method based on SVM for Relevance Feedback in Content-based 3D Model Retrieval

A Boosting Method based on SVM for Relevance Feedback in Con...

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The 2nd International Conference on software engineering and Data Mining(IEEE 第二届国际软件工程和数据挖掘学术大会 SEDM 2010)

作者： Tao Wei Xiaoman Cao Zheng Qin Biao Leng Dept. of Computer Science and Tech.Tsinghua University China School of Software Tsinghua University China School of Computer Science and Engineering Beihang University China

ISBN: (纸本)9781424473243;9788988678220;9788988678213

The technique of relevance feedback has been introduced to content-based 3D model retrieval. Support Vector Machine as a learner is one of the classical approaches in relevance feedback. And the Boosting method, as one of the ensemble methods. can establish a strong leaner by combing the component learners. In this paper, a novel relevance feedback mechanism, which makes use of the main idea of boosting and the component SVM, is presented and applied to the content-based 3D model retrievaL The experiments, based on the 3D model database Princeton Shape Benchmark, show that the relevance feedback algorithm can improve the retrieval performance of traditional SvM in 3D model retrievaL

关键词： Content-based 3D model retrieval Relevance feedback Support Vector Machine Boosting

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Real-time constrained task scheduling in 3D chip multiprocessor to reduce peak temperature

Real-time constrained task scheduling in 3D chip multiproces...

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International Workshop on Wireless Network Algorithm and Theory

作者： Li, Jiayin Qiu, Meikang Niu, Jianwei Zhu, Yongxin Chen, Tianzhou Dept. of Electrical and Computer Engineering University of Kentucky Lexington KY 40506 United States State Key Lab. of Software Develop. Environment Beihang University Beijing 100191 China School of Microelectronics Shanghai Jiaotong University Shanghai 200240 China College of Computer Science Zhejiang University Hangzhou 310027 China

ISBN: (纸本)9780769543222

Chip multiprocessor technique has been implemented in embedded systems due to the tremendous computation requirements. Three dimension chip multiprocessor architecture has been studied recently for integrating more functionalities and providing higher performance. The high temperature on chip is a critical issue for the 3D architecture. In this paper, we propose an online thermal prediction model for 3D chip. Using this model, we present a task scheduling algorithm based on rotation scheduling to reduce the peak temperature on chip. We consider the data dependencies, especially the inter-iteration dependencies which are not well considered in most of the current thermal-aware task scheduling algorithms. Our simulation result shows that our algorithm can efficiently reduce the peak temperature up to 10 °C. © 2010 IEEE.

关键词： Embedded systems

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Rendering and Animating Expressive Caricatures

Rendering and Animating Expressive Caricatures

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2010 3rd IEEE International Conference on computer science and Information Technology—ICCSIT 2010

作者： Mohammad Obaid Ramakrishnan Mukundan Mark Billinghurst Computer Science and Software Engineering Dept. University of CanterburyNew Zealand HITLab New Zealand University of CanterburyChristchurchNew Zealand

We present a novel approach for generating stylized artistic rendering of caricatures from a given face image,with the ability to map any one of the main six expressions and control the degree of its expressiveness on the generated caricature. Our method achieves this by manipulating the facial appearance and expressivity of the caricature,using quadratic deformation model representations of facial expressions.A stroke-based non-photorealistic rendering(NPR) engine is developed to generate the output caricature that appears to be a sketch of the original *** NPR engine segments the defined rendering path and generates rectangular strokes that approximate each segment. The stroke properties arc computed by applying geometric image moments on each *** enhance the overall appearance of the caricature,extra strokes are randomly positioned around the rendering *** results show that from an input neutral facial image,expressive rendered caricatures are generated for the facial expressions neutral,smile,sad,fear,surprise,disgust, and *** approach produces very expressive artistically rendered caricatures,and could lead to future research directions in further extending the method to produce pencil sketch rendering of images or rendering 3D characters to generate cartoon-like 3D characters.

关键词： Expressive Caricatures Non-photorealistic Rendering Caricature Sketch Rendering Facial Caricature

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A new application of a fuzzy linguistic quality evaluation system in digital libraries

A new application of a fuzzy linguistic quality evaluation s...

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International Conference on Intelligent Systems Design and Applications (ISDA)

作者： I. J. Pérez E. Herrera-Viedma J. López-Gijón F. J. Cabrerizo Dept. of Computer Science A.I University of Granada Granada Spain Dept. of Library Sciences University of Granada Granada Spain Department of Software Engineering Distance Learning University of Spain Madrid Spain Dept. of Software Engineering Distance Learning University of Spain (UNED) Madrid Spain

In this contribution, we present a new application based on fuzzy linguistic information to evaluate the quality of digital libraries. The quality evaluation of digital libraries is defined using users' perceptions on the quality of digital services provided through their Web sites. We assume a fuzzy linguistic modeling to represent the users' perception and apply automatic tools of fuzzy computing with words based on some weighted aggregation operators to compute global quality evaluations of digital libraries.

关键词： Libraries Pragmatics Quality assessment Web sites Computational modeling Context Intelligent systems

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An Investigation onTacit Knowledge Transfer Among Aircraft Engineer: Malaysia Experience

An Investigation onTacit Knowledge Transfer Among Aircraft E...

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The 2nd International Conference on software engineering and Data Mining(IEEE 第二届国际软件工程和数据挖掘学术大会 SEDM 2010)

作者： R.Ahmad N. Khamis N. Jamain M.H.N.M.Nasir Z.M.Kasirun B.Abd Latif Dept. of Software Engineering Faculty of Computer Science and Information Technology University of M Malaysian Institute of Aviation Technology Universiti Kuala Lumpur MALAYSIA

Transfer of gained experience, skills and know-how in aircraft maintenance from experts to trainees assures the organizational learning in providing quality of service. Taking survey method, this paper presents an early investigation on effective mechanism of knowledge transfer among aircraft engineers in Malaysia and a proposal on its implementation within the aviation domain.

关键词： tacit knowledge knowledge transfer organizational learning aircraft maintenance Malaysia

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Information fusion based on improved D-S evidence theory in power system

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Journal of Computational Information Systems 2010年第10期6卷 3391-3396页

作者： Wei, Zukuan Hu, Min Kim, Jaehong School of Software University of Electronic Science and Technology of China Chengdu 611731 China Dept. of Computer and Information Engineering Yongdong University Yongdong-Gun Chungbuk 370701 Korea Republic of

First, the basic knowledge of information fusion and its' application in power system are introduced. Next, aiming at the failure of conditional D-S evidence theory in dealing with conflicting evidences, an improved D-S theory is recommended. Then, the advantage of modified D-S combination rule and matters need attention are elaborated through instances analysis of fault diagnosis of circuit breaker and state detection of transformer. Finally, the future of information fusion technology and its applications in power system are presented. © 2010 Binary Information Press October, 2010.

关键词： Information fusion

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An Empirical Evaluation of Regression Testing Based on Fix-Cache Recommendations

An Empirical Evaluation of Regression Testing Based on Fix-C...

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International Conference on software Testing, Verification, and Validation, ICST

作者： Emelie Engström Per Runeson Greger Wikstrand Software Engineering Research Group Dept. of Comp. Science Lund University Lund Sweden Software Engineering Research Group Department of Computer Science Lund University Lund Sweden KnowIT YAHM Sweden AB Lund Sweden

Background: The fix-cache approach to regression test selection was proposed to identify the most fault-prone files and corresponding test cases through analysis of fixed defect reports. Aim: The study aims at evaluating the efficiency of this approach, compared to the previous regression test selection strategy in a major corporation, developing embedded systems. Method: We launched a post-hoc case study applying the fix-cache selection method during six iterations of development of a multi-million LOC product. The test case execution was monitored through the test management and defect reporting systems of the company. Results: From the observations, we conclude that the fix-cache method is more efficient in four iterations. The difference is statistically significant at α = 0.05. Conclusions: The new method is significantly more efficient in our case study. The study will be replicated in an environment with better control of the test execution.

关键词： System testing software testing Fault diagnosis Logic testing Costs software engineering Monitoring Joining processes Iterative methods Embedded system

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Optimization of fuzzy controller based on multi-parent crossover dynamic evolutionary algorithm

Optimization of fuzzy controller based on multi-parent cross...

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2010 International Conference on Mechanic Automation and Control engineering, MACE2010

作者： Xia, Xuewen Xiong, Zengang Li, Zhiming Li, Yuanxiang Dept. of Computer and Information Science Xiaogan College Xiaogan 432000 China State Key Laboratory of Software Engineering Wuhan University Wuhan 430072 China

ISBN: (纸本)9781424477388

Fuzzy control is a nonlinear control method;its performance depends on the fuzzy control rules, quantification factor and the scale factor. Because these multiple objectives are influence with each others, therefore it is very difficult to ensure the control effect only rely on expertise's experience. In this paper, dynamic evolutionary algorithm is adopted to optimize the multi-objectives in fuzzy controller. In dynamic evolutionary algorithm, based on the competitive relationship between particles' free energy and entropy in the phase space system, a new option strategy is put forward which is used to maintain species diversity;furthermore, multi-parent crossover operator is selected. This operator selects some individuals to form a space and then do searching in this space. This algorithm has strong ability to find the solutions of the problem, and it also run quickly compared with other traditional algorithms. Simulation results show that fuzzy controller optimized by the algorithm has good steady-state response time, steady-state error and overshoot. ©2010 IEEE.

关键词： Evolutionary algorithms

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Self-Tracking Mobile Station Controls Its Fast Handover in Mobile WiMAX

Self-Tracking Mobile Station Controls Its Fast Handover in M...

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IEEE Conference on Wireless Communications and Networking

作者： Sayan Kumar Ray Swapan Kumar Ray Krzysztof Pawlikowski Allan McInnes Harsha Sirisena Comput. Sci. & Software Eng. Dept. Univ. of Canterbury Christchurch New Zealand Comput. Sci. & Eng. Dept. Jadavpur Univ. Kolkata India Computer Science and Software Engineering Dept University of Canterbury Christchurch New Zealand Electrical and Computer Engineering Dept University of Canterbury Christchurch New Zealand

This paper proposes a mobile station (MS)-controlled fast MAC-layer handover (HO) scheme to reduce the HO latency in Mobile WiMAX. Based on the received signal strength (RSS) from any Base Station (BS), the MS can estimate its present distance from that BS. This capability allows the MS, through utilization of the broadcast messages by its Serving BS (SBS) and through few scannings of the Neighbouring BSs (NBS), to self-track its own direction of motion relative to the SBS and the NBSs and thus look ahead to perform an intelligent choice of the Target BS (TBS) for the impending HO. Simulation studies have shown a considerable reduction in the HO latency in the proposed method.

关键词： WiMAX Delay Mobile computing NIST computer science Base stations Routing Mobile ad hoc networks Quality of service Communications Society

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