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ChinaGrid Annual Conference (ChinaGrid)

作者： Xu Li Junwei Wu Xinhua Lin Ying Li Minglu Li Department of Computer Science and Engineering Shanghai Jiaotong University Shanghai China Computer Software Technology Shanghai Development Center China

ISBN: (纸本)9780769533063

Intelligent traffic information service (ITIS) is a typically grid application in ShanghaiGrid to achieve effective traffic management. Several issues and challenges needed to be explored in ITIS, such as resource sharing, middleware communication, traffic control grid, and so on. We implemented a prototype system of ITIS and carried out a field testing in Shanghai city. We show that by utilizing the grid technology, the expected performance can be obtained, such as stability, scalability, etc. Meantime, traffic status estimation and traffic surveillance can be well handled in ITIS.

关键词： Vehicles Traffic control Wireless sensor networks Mobile communication Real time systems Middleware Wireless communication

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Development of autonomous flight control system for small size unmanned helicopter sky-explorer

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Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica 2008年第SUPPL.期29卷 170-177页

作者： Wang, Geng Sheng, Huanye Lu, Tiansheng Wang, Dong Hu, Fei Department of Computer Science and Engineering Shanghai Jiaotong University Shanghai 200240 China Engineering Training Center Shanghai Jiaotong University Shanghai 200240 China School of Software Shanghai Jiaotong University Shanghai 200240 China

An autonomous flight control system for small size unmanned helicopter Sky-explorer based on dynamics model at Shanghai Jiaotong University is presented. At first, a mathematical model for small size helicopter based on Newton's mechanics is introduced. It is cited from Technical University of Berlin. Then the flight attitude controller based on this dynamics model for small size unmanned helicopter is presented. After that, a control algorithm-model and trajectory based controller named MTC by the author is introduced. It is a simple but effective control algorithm for a double integrator. Based on MTC, a flight position controller is achieved without overshooting. The MTC block is also used to achieve the translation velocity control and no stopping multi-way-point flight control by guide-position method along any defined curve course. The simulation result and the performance in real flight experiment demonstrate that the controller presented in this paper is a successful and practical flight controller for small size helicopter with a stiff main rotor.

关键词： Flight control systems

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Panel discussion: What makes good research in modeling and simulation: Sustaining the growth and vitality of the m&s discipline

Panel discussion: What makes good research in modeling and s...

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2008 Winter Simulation Conference, WSC 2008

作者： Yilmaz, Levent Davis, Paul Fishwick, Paul A. Xiaolin, Hu. Miller, John A. Hybinette, Maria Ören, Tuncer I. Reynolds, Paul Sarjoughian, Hessam Tolk, Andreas Computer Science and Software Engineering 3116 Shelby Center Auburn University Auburn AL 36849 United States RAND 1776 Main Street Santa Monica CA 90407 United States Computer and Information Science and Engineering 332 Bldg. CSE University of Florida Gainesville FL 32611 United States Department of Computer Science 34 Peachtree Street United States Georgia State University Atlanta GA 30302 United States Department of Computer Science 415 Boyd Graduate Studies Research Center University of Georgia Athens GA 30602 United States School of Information Technology and Engineering 3116 Shelby Center University of Ottawa Ottawa ON K1N 6N5 Canada Department of Computer Science 1214 Olsson Hall University of Virginia Charlottesville VA 22904 United States Computer Science and Engineering Arizona State University Tempe AZ 85281 United States Engineering Management and Systems Engineering 241 Kaufman Hall Old Dominion University Norfolk VA 23529 United States

ISBN: (纸本)9781424427086

The aim of this panel session is to promote discussion on emergent challenges and the need for advancements in the theory, methodology, applications, education in M&S. The changing landscape in science and engineering (e.g., industrial and defense application, medicine, predictive homeland security, energy and environment) introduces new types of problems and challenges into the M&S domain. In light of these emergent needs how can M&S stay relevant as new critical fields such as global climate change mitigation, energy restructuring, genetic engineering impacts on society and universal health care emerge and come into prominence? Surely the systems point of view and the tools that M&S brings to the table are key to these new directions. So, what are the critical issues and challenges facing M&S community in the face of change and need for rapid discovery? © 2008 IEEE.

关键词： Climate change

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Fully Secure Identity Based Proxy Re-Encryption Schemes in the Standard Model

Fully Secure Identity Based Proxy Re-Encryption Schemes in t...

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International Conference on computer science and Information Technology (CSIT)

作者： Xiaoming Hu Xu Chen Shangteng Huang Department of Computer Science and Engineering Shanghai Jiaotong University Shanghai China Shanghai Software Development Center Dresser Machine Limited Shanghai China

A proxy re-encryption scheme allows the proxy to transform ciphertext computed under one public key into the different ciphertext that can be decrypted by using another public key. Recently, many identity-based proxy re-encryption schemes have been proposed. However, all of these schemes are only proved secure in the random oracle not in the standard model. In this paper, Based on Waters's identity based encryption, an identity based proxy re-encryption scheme is proposed that is proved fully secure without the random model. The proposed scheme's security can be reduced to the decision Bilinear Diffie-Hellman assumption.

关键词： Cryptography Public key Security Computational modeling Public key cryptography Games Construction industry

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Design of Adaptive Model Predictive Controller for Wireless Sensor Networks

Design of Adaptive Model Predictive Controller for Wireless ...

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International Symposiums on Information Processing (ISIP)

作者： Chen Yi Chen Li Li Rong Gao Ge National Engineering Research Center of Multimedia Software Wuhan University of China China Department of Computer science Central China Normal University Wuhan China

ISBN: (纸本)9781424430536;9780769531519

In wireless sensor networks, the network state beacon exchange rate is vital to determine the quality of service (QoS) performance of network state. It is important to schedule this parameter adaptively due to the dynamic nature of the networks. In this paper, an adaptive self-control model for wireless sensor (ASMW) is presented which model the whole wireless networks as a closed-loop system. The model is independent of the precision of the model parameters but operates adaptively. The simulation results show that the ASMW model is able to improve the performance of wireless networks effectively in adjusting the value of the beacon exchange rate to the reference value and uncomplicated to be implied in hardware.

关键词： Programmable control Adaptive control Predictive models Wireless sensor networks Exchange rates Quality of service Routing protocols Network topology Ad hoc networks Telecommunication traffic

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Metadata Management Based on Set-Top Box in Digital Broadcasting Environments

Metadata Management Based on Set-Top Box in Digital Broadcas...

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International Conference on computer science and software engineering

作者： Jong-Hyun Park Soon-Jong Kang Ji-Hoon Kang Software Research Center Chungnam National University Daejeon South Korea Department of Computer Science and Engineering Chungnam National University Daejeon South Korea

ISBN: (纸本)9781424439027

Digital broadcasting as new generation broadcasting offers a new opportunity for interactive services. For variety services of broadcasting, the broadcasting metadata becomes increasingly important and one of the metadata standards for a digital broadcasting is TV-Anytime metadata. There are some researches for dealing with broadcasting metadata. In our previous study, we have proposed the method for efficiently managing the broadcasting metadata in a service provider. However, the environment of a set-top box for digital broadcasting is limited such as low-cost and low-setting. Therefore there are some considerations to apply general approaches for managing the metadata into set-top box. This paper proposes a TV-Anytime metadata management system based on set-top box which is consisted of storage engine and XQuery Engine. For interoperability, XQuery engine uses XQuery for searching TV-Anytime metadata in XML because XQuery is a standard query language for XML data. Also we propose a storage engine for storing the metadata which uses a file-based indexing method for managing the stored data. Our two engines are designed independently with hardware platform therefore these engines can be used in any low-cost applications to manage broadcasting metadata. We implement a prototype system and evaluate the system.

关键词： Environmental management TV broadcasting Engines XML Database languages computer science engineering management Hardware Content management Standards development

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Aggregation Pheromone Density Based Classification

Aggregation Pheromone Density Based Classification

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International Conference on Information Technology (ICIT)

作者： Anindya Halder Susmita Ghosh Ashish Ghosh Center for Soft Computing Research Indian Statistical Institute Kolkata India Department of Computer Science & Engineering Jadavpur University Kolkata India Machine Intelligence Unit andCenter for Soft Computing Research Indian Statistical Institute Kolkata India

Social insects like ants, bees deposit pheromone (a type of chemical) in order to communicate between the members of their community. Pheromone, that causes clumping behavior in a species and brings individuals into a closer proximity, is called aggregation pheromone. This article presents a new algorithm (called, APC) for pattern classification based on the property of aggregation pheromone found in natural behavior of real ants. Here each data pattern is considered as an ant, and the training patterns (ants) form several groups or colonies depending on the number of classes present in the data set. A new (test pattern) ant will move along the direction where average aggregation pheromone density (at the location of the new ant) formed due to each colony of ants is higher and hence eventually it will join that colony. Thus each individual test ant will finally join a particular colony. The proposed algorithm is evaluated with a number of benchmark data sets in terms of classification accuracy. Results are compared with other state of the art techniques. Experimental results show the potentiality of the proposed algorithm.

关键词： Ant colony optimization Pattern classification Insects Classification tree analysis Chemicals Testing Computational modeling Information technology computer science Machine intelligence

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CESVM:centered Hyperellipsoidal Support Vector Machine Based Anomaly Detection

CESVM:Centered Hyperellipsoidal Support Vector Machine Based...

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2008 IEEE International Conference on Communications(ICC 2008)

作者： Sutharshan Rajasegarar Christopher Leckie Marimuthu Palaniswami ARC Special Research Center for Ultra-Broadband Information Networks (CUBIN) Department of Electrical and Electronic Engineering NICTA Victoria Research Laboratory Department of Computer Science and Software Engineering The University of MelbourneAustralia

A challenge in using machine learning for tasks such as network intrusion detection and fault diagnosis is the difficulty in obtaining clean data for training in order to model the normal behavior of the *** anomaly detection techniques such as one class support vector machines (SVMs) have been introduced to overcome this *** class support vector machines model the normal or target data using non-linear surfaces in the input space while ignoring the anomalous *** approach to this problem is based on fitting a hyperellipsoid with a minimal effective radius,centered at the origin,around a majority of the data vectors in a higher dimensional *** formulate this as a linear optimisation problem,which is advantageous in terms of its computational *** demonstrate using real data from the Great Duck Island Project that our approach achieves better detection performance and flexibility in terms of parameter selection,compared to an earlier detection scheme using a quarter sphere SVM.

关键词： origin Vector CESVM:centered Hyperellipsoidal Support Vector Machine Based Anomaly Detection

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Automatic Digest Generation by Extracting Important Scenes from the Content of Presentations

Automatic Digest Generation by Extracting Important Scenes f...

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International Workshop on Database and Expert Systems Applications

作者： Hieu Hanh Le Thitiporn Lertrusdachakul Tetsutaro Watanabe Haruo Yokota Department of Computer Science Tokyo Institute of Technology Japan Department of Computer Science Graduate School of Information and Engineering Tokyo Institute of Technology Japan Application Lab Ricoh Company Ltd Application Laboratory Software R&D Group Ricoh Company Limited Japan Department of Computer Science Tokyo Institute of Technology Global Scientific Information and Computing Center Tokyo Institute of Technology

Recently, combining a video recording of a presentation along with the digital slides used in it has become popular in e-learning and presentation of archives. For users of the archives, it is useful to preview a digest of such content to grasp the atmosphere and/or an outline of the presentation. This paper proposes a method of automatic digest generation by extracting important scenes from the presentation content. The extracted scenes are chosen based on several factors such as frequency and specificity of words, scene duration and order. Finally, the effectiveness of the proposed methods are evaluated by comparing with testers' answer sets for actual lectures.

关键词： Data mining Speech Proposals Electronic learning Arrays Video recording software

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An Analytical Model for Broadcasting by Self Pruning in Wireless Ad Hoc Networks

An Analytical Model for Broadcasting by Self Pruning in Wire...

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IEEE/IFIP International Conference on Embedded and Ubiquitous Computing, EUC

作者： Yu Huang Bo Liu Xianping Tao Jiannong Cao Beihong Jin Nanjing University Nanjing Jiangsu CN Department of Computer Science and Technology Nanjing University Nanjing China Internet and Mobile Computing Lab Department of Computing Hong Kong Polytechnic University Hong Kong China Technology Center of Software Engineering Institute of Software of Chinese Academy of Sciences Beijing China

The broadcast operation is a fundamental service in wireless ad hoc networks. The naive flooding mechanism may trigger a great number of data retransmissions at the same time and congest the networks, resulting in the broadcast storm problem. Self pruning is a simple heuristic, which reduces redundant data transmission of flooding, making use of the neighbor knowledge. However, exiting evaluation on self pruning is mainly based on experiments and greatly lacks detailed theoretical analysis. To this end, we propose in this paper an analytical model, which estimates the expected cost and the scalability of self pruning. To evaluate the accuracy of the proposed analytical model, we compare the analytical results with results obtained from the experiments. The experimental evaluation shows that the proposed analytical model accurately estimates the expected cost and scalability of self pruning, especially when the density of nodes is high.

关键词： Analytical models Mobile ad hoc networks Costs Floods Scalability Data communication Radio broadcasting Broadcast technology Embedded software computer networks

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