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International Conference on Advances in Energy engineering (ICAEE)

作者： ZhiHai Xu Jian Xie Wei Ge Chun Hu Network Center University of Nanchang Nanchang China Department of Information Engineering Jiangxi Vocational and Technical College of Electricity Nanchang China Computer Science Department Jiang Xi Radio and Television University Nanchang China Network Center Jiangxi University of Science and Technology Nanchang China

In this paper, we discussed current situation and problems of the statistical language models. And then the development and realization methods of the long-distance dependency language model simply introduced. At last... 详细信息

关键词： Argon Syntactics

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Fair End-to-End Bandwidth Distribution in Wireless Sensor networks

Fair End-to-End Bandwidth Distribution in Wireless Sensor Ne...

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IEEE International Conference on Communications (ICC)

作者： Y. Jian S. Chen Y. Ling Department of Computer & Information Science & Engineering University of Florida USA Network Information Center University of Shanghai for Science and Technology China Applied Research Laboratories Telcordia Technologies Inc. USA

End-to-end fairness in a sensor network ensures that data from each sensor has an equal (or weighted) chance to reach the sink. It eliminates the problem that data flows from sensors at some locations (close to the sink) obtain most network bandwidth, while flows from sensors at other locations (far away from the sink) are starved. Existing fairness solutions assume single-path routing, which reduces achievable throughput of the network. In this paper, we propose a multipath fairness solution (MFS) that achieves end-to-end fairness among competing flows through fully distributed operations. MFS is easy to implement, which is advantageous in a resource-scarce sensor network. More importantly, it achieves much higher network throughput and better fairness among the flows.

关键词： Bandwidth Wireless sensor networks Routing Throughput Paper technology Base stations Channel allocation Telecommunication traffic Communications Society computer networks

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Document clustering with semantic features and fuzzy association

Communications in Computer and Information Science

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Communications in computer and Information Science 2010年 54卷 167-175页

作者： Park, Sun An, Dong Un Cha, ByungRea Kim, Chul-Won Advanced Graduate Education Center of Jeonbuk for Electronics and Information Technology BK21 Chonbuk National University Korea Republic of Division of Electronic and Information Engineering Chonbuk National University Korea Republic of Network Media Lab. GIST Korea Republic of Department of Computer Engineering Honam University Korea Republic of

ISBN: (纸本)9783642120343

This paper proposes a new document clustering method using the semantic features and fuzzy association. The proposed method can improve the quality of document clustering because the clustered documents by using fuzzy association values to distinguish well dissimilar documents, the selected cluster label term by semantic features, which is used in document clustering, can represent an inherent structure of document set better. The experimental results demonstrate that the proposed method achieves better performance than other document clustering methods. © 2010 Springer-Verlag Berlin Heidelberg.

关键词： Cluster analysis

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The simulation and analysis of the electromagnetic shielding effectiveness of PoE-Hub with redundancy by FEM

The simulation and analysis of the electromagnetic shielding...

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International Conference on Electrical and Control engineering, ICECE 2010

作者： Fu, Wei Tong, Shi-Hua Zhang, Ya-Chao Zhang, Jun Key Laboratory of Network Control and Intelligent Instrument ministry of Education Chongqing University of posts and Telecommunications Chongqing 400065 China Computer Application Department Chongqing College of Electronic Engineering Chongqing 401331 China

ISBN: (纸本)9780769540313

This paper is to introduce the design and optimization the PoE Hub with redundancy based on the principle of EMC;through the simulation and analysis by FEM to the effectiveness of the hub of the electromagnetic shielding to enhance anti-interference performance of the hub according to the optimization to the problems discussed in the simulation. Having the aid of EMC simulation software, the analysis problem being found during the test of hub is also get the effective solution. The method of the analysis testing and problem-solving will be the guidance and reference to the design and research of the network equipment based on the principle of EMC in the future. © 2010 IEEE.

关键词： Electromagnetic compatibility

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Research and Design of Common Components for Virtual Scene

Research and Design of Common Components for Virtual Scene

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The 2nd IEEE International Conference on Advanced computer Control(第二届先进计算机控制国际会议 ICACC 2010)

作者： Chunhua Wang Hongfei Zhang Dong Han Department of Computer Science Huanghuai UniversityZhumadian Henan463000China Department of Electronic Science and Engineering Huanghuai UniversityZhumadian Henan463000China Center of Network Management Huanghuai UniversityZhumadian Henan463000China

ISBN: (纸本)9781424458455;9781424458486;9781424458479;9781424458462

The development of virtual scene involves too many object;however, in most cases they share some common parts. After researching the modeling method of sky and terrain, one basic framework of virtual scene's development is put forward. The framework covers both the modeling and rendering technique of sky and terrain, and any operation on camera. Detailed design is presented in relative section, by operating the view matrix different rotation or translation on camera is realized. On the basis of analyze various methods of sky rendering, plane is adopted to model the sky and take fish-eye picture as texture. Terrain is simulated by height map and one algorithm applying to compute the height of different position in terrain is presented. Experiment shows that this framework can improve the efficiency of Virtual Environment Development and possesses good versatility and scalability.

关键词： basic framework virtual scene terrain sky camera

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A Fast 2D Frustum Culling Approach

A Fast 2D Frustum Culling Approach

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2010 2nd International Conference on computer engineering and Technology(2010年第二届计算机工程与技术国际会议 ICCET 2010)

作者： Huijuan Xu Chunhua Wang Hongfei Zhang Dong Han Department of Computer Science Huanghuai UniversityZhumadian Henan463000China Department of Electronic Science and Engineering Huanghuai UniversityZhumadian Henan463000China Center of Network Management Huanghuai UniversityZhumadian Henan463000China

ISBN: (纸本)9781424463473

By reducing the data amount to graph pipeline,the rendering efficiency can be improved significantly. We present a novel frustum culling approach (2D frustum culling) for the scene that has only one layer of objects,such as forest. This scene meets the condition ‘when projecting all the objects to one plane,the point on projected plane corresponds to only one object’. Our approach contains three parts. Firstly,derive the expression of frustum in object local space. Secondly, adopt double-queue to compute the largest convex polygon. Lastly,use scan algorithm to work out which points are in the convex polygon,and these points suggest according objects are within the view frustum. Rendering forest with such algorithm shows that it has good culling efficiency and meets real-time rendering requirements.

关键词： 2D frustum culling:convex polygon:scan algorithm

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Design and formal analysis of a new Fair Multi-Party Certified Mail Protocol

Design and formal analysis of a new Fair Multi-Party Certifi...

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International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Yue-Xiang Gao Dai-Yuan Peng Li-Li Yan School of Computer Science SiChuan Normal University Chengdu China School of Information Science & Technology Southwest Jiaotong University Chengdu China Department of Network Engineering Chengdu University of Information and Technology Chengdu China

Fair Multi-Party Certified Mail Protocol is a value service to deliver important data over internet with guaranteed receipt for each successful delivery. Therefore, the protocol needs to be Confidential, Non-repudiation and Fairness. This paper pointed out potential security concern for a current protocol, and also came out an offline third party fair multi-party certified Mail Protocol based on signcryption scheme. Through the analysis by Kailar logic, it is can be seen the protocol can achieve the non-repudiation, fairness. Furthermore, it has advantage of resisting the attacks as distort, replay and conspiracy.

关键词： Protocols Electronic mail Postal services Machine learning Cybernetics Public key

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A reconfigurable H-shape antenna for wireless applications

A reconfigurable H-shape antenna for wireless applications

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European Conference on Antennas and Propagation, EuCAP

作者： H. F. AbuTarboush R. Nilavalan K. M. Nasr H. S. Al-Raweshidy D. Budimir Wireless Network & Communication Centre School of Engineering & Design Brunei University West London UK National Physical Laboratory (NPL) Wireless Communication Engineering Technologies Teddington UK Wireless Communications Research Group Department of Electronics & Computer Science Westminster University West London UK

This paper presents a novel H-Shaped reconfigurable microstrip patch antenna fed by a Grounded Coplanar Waveguide (GCPW) for wireless applications. The uniqueness in the presented antenna design relies in the ability to select the number of operating frequencies electronically by using a varactor diode. The antenna structure consists of coplanar waveguide (CPW) input with an H-shape printed on a PCB and a varactor diode for reconfigurability. By electronically varying the value of the diode capacitance, the antenna can operate in a single band mode to cover Global Position System (GPS), a dual band mode to cover GPS and Global System for Mobile communications (GSM1900) or a three-band mode to cover GPS, GSM1900 and Bluetooth or Wireless Local Area networks (WLAN).

关键词： Coplanar waveguides Diodes Global Positioning System Varactors Wireless LAN Microstrip antennas Patch antennas Frequency Capacitance Mobile antennas

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Dynamic stability and control design of modern electric energy systems with large penetration of distributed generators

Dynamic stability and control design of modern electric ener...

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iREP Symposium on Bulk Power System Dynamics and Control

作者： M. Honarvar Nazari M. Ilić J. Peças Lopes Electrical Engineering K.N. Toosi University of Technology Iran Energy Systems Engineering Sharif University of Technology Iran Carnegie Mellon University Pittsburgh PA USA Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge MA USA University of Illinois Urbana-Champaign USA Control of Future Electricity Network Operations in the Faculty of Technology Delft University of Technnology Delft Netherlands Cornell University Ithaca NY USA Department of Electrical Engineering of the Faculty of Engineering of University of Porto Portugal

This paper investigates dynamic stability and control design of modern electric energy systems as many MW-scale distributed generators (DG) of various types are deployed in the distribution side of electric systems. The paper is mainly concerned about small-signal frequency stability of distribution systems with decentralized or centralized control systems. The Gerschgorin Circle Theory and Hicks Stability Theory are used for verifying sufficient conditions for small-signal stability. The paper also discusses about designing advanced enhancing robustness methods to ensure both safety and stability of modern distribution systems. Finally, the paper closes with a discussion of policies needed to support large penetration of DG units in distribution systems to ensure safety and robustness of the system.

关键词： Stability criteria Centralized control Power system stability Distributed control Frequency control Mathematical model

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Preparation-before-Competition: Designing a Game-Based Environment to Facilitate Making Effort before Pet-Competitive Stage

Preparation-before-Competition: Designing a Game-Based Envir...

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IEEE International Workshop on Digital Game and Intelligent Toy Enhanced Learning (DIGITEL)

作者： Calvin C.Y. Liao Zhi-Hong Chen Hercy N.H. Cheng Tak-Wai Chan Graduate Institute of Network Learning Technology National Central University Jhongli Taiwan Department of Computer Science and Information Engineering National Central University Jhong Li Taiwan National Central University Jhong Li Taiwan

Although competitive games have multi-fold benefits to students' learning, such as motivation, satisfaction, and effectiveness, inappropriate competitive learning activities may have some negative impacts on students. From the literature, the authors have identified three main strategies which may reduce the negative impacts in competition game. However, because these strategies target only at the design of competition, the learning effects is limited. In fact, learning also happens in the preparation before competition. Hence, this study adopts preparation-before-competition approach to foster the habit of endeavor. That is, students make more effort to learn; they will win more easily. An animal companion system, entitled My-Pet-Trainer system, was implemented according to such approach. The system encourages students to improve their learning in the preparation stage where the virtual pets represent students' open learner models before the competition stage. In addition, the paper also considers the symbiosis and emotional relationship with virtual pets to maintain long-term interactions.

关键词： Animals Positron emission tomography Cities and towns computer science Symbiosis Vehicles Artificial intelligence

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