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International Symposium on Systems and Control in Aerospace and Astronautics (ISSCAA)

作者： Xinxin Yang Xiong Luo Fuchun Sun Fengge Wu Huaping Liu School of Information Engineering Key Laboratory of Advanced Control of Iron and Steel Process (Ministry of Education) University of Science and Technology Beijing Beijing China State Key Laboratory of Intelligent Technology and System Department of Computer Science and TechnologyTsinghua National Laboratory for Information Science and Technology Tsinghua University Beijing China

In recent years, dynamics model and control of space robot system are the hot topics in the research field. In this paper, a new dynamics model and control strategy of space robotic system with a flexible manipulator and a liquid fuel tank are investigated. Based on Lagrange equation method, the dynamics model of the space robotic system coupling with liquid sloshing, flexibility vibration and base movement is derived. The elastic deflection of the flexible manipulator is described by the assumed mode method and equivalent mechanical model is adopted instead of liquid sloshing under the environment of low-gravity. The inverse dynamics control algorithm combined with PD control method is performed to solve the trajectory tracking problem. Some simulation results are given to verify the effectiveness of the proposed method.

关键词： Mathematical model Aerospace electronics Manipulator dynamics Equations Space vehicles

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A Hierarchical Image Annotation Method Based on SVM and Semi-supervised EM

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自动化学报 2010年第7期36卷 960-967页

作者： GAO Yan-Yu YIN Yi-Xin UOZUMI Takashi School of Information Engineering University of Science and Technology Beijing Beijing 100083 P.R.China Key Laboratory of Advanced Control of Iron and Steel Process (Ministry of Education) University of Science and Technology Beijing Beijing 100083 P. R. China Department of Computer Science and Systems Engineering Muroran Institute of Technology Muroran 050- 8585 Japan

Automatic image annotation, which aims at automatically identifying and then assigning semantic keywords to the meaningful objects in a digital image, is not a very difficult task for human but has been regarded as a difficult and challenging problem to machines. In this paper, we present a hierarchical annotation scheme considering that generally human s visual identification to a scenery object is a rough-to-fine hierarchical process. First, the input image is segmented into multiple regions and each segmented region is roughly labeled with a general keyword using the multi-classification support vector machine. Since the results of rough annotation affect fine annotation directly, we construct the statistical contextual relationship to revise the improper labels and improve the accuracy of rough annotation. To obtain reasonable fine annotation for those roughly classified regions, we propose an active semi-supervised expectation-maximization algorithm, which can not only find the representative pattern of each fine class but also classify the roughly labeled regions into corresponded fine classes. Finally, the contextual relationship is applied again to revise the improper fine labels. To illustrate the effectiveness of the presented approaches, a prototype image annotation system is developed, the preliminary results of which showed that the hierarchical annotation scheme is effective.

关键词：数字图像自动化系统准确性意义图像标注

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Disquisition of Shooting information Distribution System based on AJAX

Disquisition of Shooting Information Distribution System bas...

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The 2010 International Conference on computer Application and System Modeling(2010计算机应用与系统建模国际会议 ICCASM 2010)

作者： Chen Peng Luan Yinxia Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology Department of Com Department of Computer & Information Engineering Hohai University Changzhou China

ISBN: (纸本)9781424472352

According to the bussiness requirement of Shooting information Distribution Systems (IDS) based on sufficient investigation, the development status of similar system and relatived technology at home and abroad are analysed and studied in this paper. The bussiness workflow is analysed deeply based on the example of shooting results inquiry. Then a solution is proposed for information Distribution System by remote inquiry. The popular B/S (Browser/Server) architecture is used in this system. It follows the software architecture of three-layer structure which includes presentation layer, business logic layer, data access layer. The ASP. NET AJAX(Asynchronous JavaScript and XML)is used as development framework. It implements the partial refresh and inquiry suggestion functions which provides much more convenience to the users. In this design, windows Server 2003 is used as the operating system and SQL Server 2005 is used as backstage database. The front interface supports IE 6. 0 and the following version. The entire design process includes requirement analysis, overall design, database design and detail design. In addition, the functions of partial refresh, inquiry suggestion, getting binary format picture from database are illustrated in detail. At last detailed test cases are designed to test the system.

关键词： information distribution systems B/S ASP. NET AJAX

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The application of flash into M-learning in 3G initial stage

The application of flash into M-learning in 3G initial stage

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International Symposium on Knowledge Acquisition and Modeling, KAM

作者： Yue-ming Tang Quan Liu Ling-ling Wang Department of Educational Technology Henan Normal University Xinxiang Henan China Institute of Computer Science and Technology Provincial Key Laboratory of Computer Information Processing Technology Soochow University Suzhou Jiangsu China

With the development of the 3G technology, M-learning enters a period of rapid development. But meanwhile 3G also restrains the development of M-learning due to several drawbacks in its early days. According to the application analysis, it comes out Flash has its unique features: small capacity, easy to develop high-quality and etc, which can make up for 3G initial stage's disadvantages. Through case design, this paper proves that Flash can be a new effective approach and way for M-learning in the 3G network. In the end, from the aspects of technical and artistic, this paper makes a further research on how to improve the flash animation to serve the M-learning better.

关键词： Multimedia communication Education Animation

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Robust Stability of Uncertain Stochastic Fuzzy Systems with Time-varying Delays

Robust Stability of Uncertain Stochastic Fuzzy Systems with ...

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The 8th World Congress on Intelligent Control and Automation(第八届智能控制与自动化世界大会 WCICA 2010)

作者： Mingang Hua Juntao Fei Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology College of Computer and Information Hohai University Changzhou 213022P.R.China

Based on Takagi-Sugeno (T-S) fuzzy models, the problem of robust stability for a class of uncertain stochastic fuzzy systems with time-varying delays is studied. First, a class of uncertainty T-S dynamical fuzzy systems is given. By constructing Lyapunov-Krasovskii functional, novel delay-dependent stability sufficient conditions are derived based on linear matrix inequality(LMI). The results are less conservative than existing ones. Numerical examples are presented to show that the advantage and validity of the proposed approach.

关键词： Fuzzy systems Stochastic processes Delay Stability criteria Time varying systems Numerical stability

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Design of the wireless points-scoring system in sports competition based on PDA

Design of the wireless points-scoring system in sports compe...

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International Conference on information Science and Engineering (ICISE)

作者： Chen Peng Fei Chao Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology Changzhou China Department of Computer & Information Engineering Hohai University HHU Changzhou China

This system mainly consists of the PDA control terminal which is responsible for collecting the result data, the PDA client terminal which is used for transmitting data and sending instructions to the PDA client terminal, web server which provides the accessibility of the website and storage of the database. The adoption of the OO technology is included in the design development of the system. The PDA client terminal is developed by C# language in the development environment of *** 2.0, while the PDA control terminal is developed by Delphi 2006. This essay analyzed and designed the system, giving the comparison of different pattern of the network transformation and the reason of choosing UDP as the communication mode to ensure the real-time of the system. In addition, the author summarized the problems occurred in the on-site application and put forward the solution of data submission by multi-customer.

关键词： Personal digital assistants Web server Real time systems Databases Wireless communication Presses Web pages

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IPv6-based dynamic quality of service control strategy for wireless network

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Journal of Networks 2010年第9期5卷 1098-1105页

作者： Chen, Zhifeng Zhu, Qiaoming Qian, Peide Chen, Fengyan Key Laboratory of Computer Information Processing Technology of Jiangsu Province School of Computer Science and Technology Soochow University Suzhou 215006 China Suzhou Institute of Trade and Commerce Suzhou 215009 China School of Foreign Language Soochow University Suzhou 215006 China

On the basis of the architecture for fast handover of hierarchical IPv6, a coordinated call admission control mechanism was presented, providing an end-to-end RSVP context transfer for real-time applications to overcome the weakness of the context transfer protocol which cannot meet the need of end-to-end QoS mechanisms because the contexts were only transferred between the previous and new access routers. The mechanism decreased the delay caused by re-initiate QoS signaling from scratch to reestablish QoS forwarding process, and minimized the handover service disruption. The signaling overhead and handover latencies could be reduced by adopting t he fast handover for hierarchical IPv6 architecture. The approach was compared with the re-initiating RSVP signaling to reestablish QoS states using network simulator ns2. The numerical results showed that the scheme has the less latency and packet loss than that of the re-initiating approach. © 2010 ACADEMY PUBLISHER.

关键词： Quality of service

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Neural network predictive control of vehicle suspension

Neural network predictive control of vehicle suspension

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International Conference on information Science and Engineering (ICISE)

作者： Jing Xu Juntao Fei College of Computer and Information Hohai University HHU Changzhou China Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology Hohai University HHU Changzhou China

Smooth traveling and comfort ride are the basic evaluation criterions for a ground vehicle. This paper attempts to establish the vibration control technology based on neural network predictive control, use these predicted values to determine control input to optimize the future performance of the vehicle and improve the smooth and comfort ride of vehicle. The dynamic model of vehicle suspension system is discussed, and the linear passive suspension model and nonlinear spring suspension model of the vertical acceleration are compared. Because of the great advantages of the neural network in dealing with the nonlinear property of the spring suspension system, a BP neural network predictive controller is designed and implemented to predict the vertical acceleration of the vehicle suspension system. Simulations demonstrate the effectiveness of the neural network predictive controller with application to vehicle system.

关键词： Suspensions Artificial neural networks Vehicles Predictive control Predictive models Springs Acceleration

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Multi-mode bandstop filter using defected equilateral triangular patch resonator

Multi-mode bandstop filter using defected equilateral triang...

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International Symposium on Antennas, Propagation and EM Theory (ISAPE)

作者： Jian-Kang Xiao Xiao-Peng Zu Hui-Fen Huang Wei-Li Dai Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology Changzhou China School of Computer and Information Hohai University Changzhou China School of Computer and Information Hohai University Changzhou Changzhou China School of Electronic and Information Engineering South China University of Technology Guangzhou Guangzhou China

Microstrip multi-band bandstop filters using tri-mode equilateral triangular patch resonator are developed, and the rules of resonant frequency and patch defection dimension are obtained by calculation. With fractal patch defection and a higher substrate permittivity, higher order modes of resonator are activized for the multi-band implementation, and the dominant mode TM 1,0,-1 , and the higher order modes TM 1,1,-2 and TM 2,-2,0 are fully applied, and filter performances are greatly enhanced. The design is demonstrated by experiment. The proposed filters have advantages of simple topology, compact size and nicer performances, and all these features are well popular for wireless communication systems.

关键词： Resonant frequency Fractals Manganese

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Action Recognition Using Spatial-Temporal Context

Action Recognition Using Spatial-Temporal Context

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International Conference on Pattern Recognition

作者： Qiong Hu Lei Qin Qingming Huang Shuqiang Jiang Qi Tian Key Laboratory of Intelligence Information Process. Institute of Computer Technology Chinese Academy and Sciences Beijing China Chinese Academy of Sciences Beijing Beijing CN Department of Computer Science University of Texas San Antonio TX USA

ISBN: (纸本)9781424475421

The spatial-temporal local features and the bag of words representation have been widely used in the action recognition field. However, this framework usually neglects the internal spatial-temporal relations between video-words, resulting in ambiguity in action recognition task, especially for videos “in the wild”. In this paper, we solve this problem by utilizing the volumetric context around a video-word. Here, a local histogram of video-words distribution is calculated, which is referred as the “context” and further clustered into contextual words. To effectively use the contextual information, the descriptive video-phrases (ST-DVPs) and the descriptive video-cliques (ST-DVCs) are proposed. A general framework for ST-DVP and ST-DVC generation is described, and then action recognition can be done based on all these representations and their combinations. The proposed method is evaluated on two challenging human action datasets: the KTH dataset and the YouTube dataset. Experiment results confirm the validity of our approach.

关键词： Videos Histograms YouTube Context Accuracy Humans Feature extraction

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