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A RAID controller: Software, hardware and embedded platform based on Intel IOP321

First International Conference on Embedded Software and systems, ICESS 2004

作者： Dong, Xiao-Ming Wan, Ji-Guang Liu, Rui-Fang Tan, Zhi-Hu Key Laboratory of Data Storage System School of Computer Science and Technology Huazhong University of Science and Technology Wuhan Hubei 430074 China

ISBN: (纸本)3540281282

While demand for large-scale storage services is growing very rapidly, RAID is still today's standard solution for enterprise class storage systems. The software and hardware designing of a RAID controller based on Intel IQ80321 platform is introduced, in which embedded Linux is setup on the board, and a prototype system is implemented on x86 platform with Fibre Channel interface to host. The benchmark test presents throughput of 186MB/s and 184MB/S for RAID 5 reading and writing respectively. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Data storage equipment

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Security policy analysis in network-attached optical disk storage system

Security policy analysis in network-attached optical disk st...

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Seventh International Symposium on Optical Storage, ISOS 2005

作者： Liu, Jun Xie, Changsheng Huang, Hao Key Laboratory of Data Storage System Huazhong University of Science and Technology Wuhan 430074 China Department of Computer Science Wuhan Institute of Technology Wuhan 430074 China

The network-attached optical disk storage system has the advantages of the network-attached storage system and the optical storage device. Due to the data reliability and the removability of the storage medium, this optical storage system is very effective on massive data providing and backup. Recently, achievements have been made in security models and policies in a distributed network system environment and the network-attached storage system environment. However, the relevant research is not enough in the network-attached optical disk storage system, especially in a network-attached optical disc device. So it is significant to analyze the security policy and setup a good security model for the network-attached optical disk storage system. This paper makes a theoretical analysis on the security policy in the network-attached optical disk storage system. Firstly, the difference of the network-attached optical disk storage system and the distributed network system environment is presented. The network-attached optical disk storage system is a special distributed network system, and to meet the requirements of the system security, we use the authentication and key exchange protocol method to decide who is authorized to have what access rights on which objects with respect to some security models and policies in compute system. Secondly, we compare the effect of several types of authentication and key distribution protocols in a distributed network system environment. Then we port these authentication and key exchange protocols on the network-attached optical disk storage system environment. Based on these analyses, this paper proposes a secure key management scheme for security services in the network-attached optical disk storage system over open networks. This scheme focuses on the framework for authentication and the centralized key management, and future work will focus on dynamic membership management.

关键词： Optical disk storage

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A new approach for early detection of internet worms based on connection degree

A new approach for early detection of internet worms based o...

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International Conference on Machine Learning and Cybernetics, ICMLC 2005

作者： Bo, Chen Bin-Xingfang Yun, Xiao-Chun National Computer Information Content Security Key Laboratory Harbin Institute of Technology Harbin 150001 China National Computer Network and Information System Security Administration Center Beijing 100031 China

ISBN: (纸本)078039092X

In recent years, internet-scale worm incidents occurred many times. People wonder at the speediness of the worm spread and the severe damage to the internet. So people began to find methods to detect worms as quickly as possible. The paper first describes a worm behavior and propagation model. And then based on it, a new approach for early detection of internet worms is proposed. This approach determines whether a worm incident has occurred by the change of the computers' connection degree. The approach is proved to be effective on early detection of unknown worms by experiments © 2005 IEEE.

关键词： computer worms

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Research on the link traffic based on passive measurement

Research on the link traffic based on passive measurement

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International Conference on Machine Learning and Cybernetics, ICMLC 2005

作者： Shang, Feng-Jun Pan, Ying-Jun College of Computer Science and Technology Chongqing University of Posts and Telecommunications Chongqing 400065 China Key Laboratory of Opto-electronic Technology and System Chongqing University Ministry of Education Chongqing 400044 China

ISBN: (纸本)078039092X

In order to manage the whole network, a novel traffic model is proposed based the active probe method. The core of model has three parts: First, we measure routing probability matrix by injecting probe packet train into the network based on the Internet Protocol Measurement protocol (IPMP) by Poisson law. Second, we use passive measurement method to acquire sd traffic. Last, we can compute link traffic by means of network tomography. We prove the validity of edge measurement method. Our computing results show the competing link traffic error within about 30% by edge measurement model. © 2005 IEEE.

关键词： Telecommunication traffic

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Method of building a miniaturized Linux

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Jisuanji Gongcheng/computer Engineering 2005年第9期31卷 61-63+197页

作者： Dong, Xiaoming Li, Huaiyang Zhao, Zhen Tan, Zhihu Key Laboratory of Information Storage System School of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074 China

The paper introduces the applications of Linux in embedded systems, and the host/target development mode, also proposes a method based on the initial RAM disk mechanism to build a miniaturized Linux system. The implementation of three components, Linux kernel, root file system and boot loader, are introduced in detail. Lastly, a typical example on developing network-attached storage (NAS) server is shown.

关键词： Embedded INITRD Linux Miniaturization NAS

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A new algorithm for pattern optimization in protein-protein interaction extraction system

A new algorithm for pattern optimization in protein-protein ...

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Second Iberian Conference on Pattern Recognition and Image Analysis, IbPRIA 2005

作者： Hao, Yu Zhu, Xiaoyan Li, Ming State Key Laboratory of Intelligent Technology and System Department of Computer Science and Technology Tsinghua University Beijing China School of Computer Science University of Waterloo Waterloo Ont. N2L 3G1 Canada

In pattern matching based Protein-Protein Interaction Extraction systems, patterns generated manually or automatically exist erroneous and redundancy, which greatly affect the system's performance. In this paper, a MDL-based pattern optimizing algorithm is proposed to filter out the bad patterns and redundancy. Experiments show that our algorithm is effective in improving the system's performance while greatly cutting down the number of patterns. It also has excellent generalizability which is important in implementing practical systems. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Pattern recognition

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Research on the link traffic based edge measurement

Research on the link traffic based edge measurement

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2005 International Conference on Communications, Circuits and systems

作者： Shang, Feng-Jun College of Computer Science and Technology Chongqing University of Posts and Telecommunications Chongqing 400065 China Key Laboratory of Opto-electronic Technology and System of Ministry of Education College of Opto-electronic Engineering Chongqing University Chongqing 400044 China

ISBN: (纸本)0780390156

关键词： Telecommunication traffic

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INS/GPS Integrated system State Estimation Based on Hopfield Neural Network

INS/GPS Integrated System State Estimation Based on Hopfield...

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2005 International Conference on Neural Networks and Brain(ICNN&B’05)

作者： Hang Shi Jihong Zhu Zengqi Sun State Key Laboratory of Intelligent Technology and System Department of Computer Science and TechnologyTsinghua University

This paper aims at introducing state estimation in INS/GPS integrated system utilizing Hopfield neural ***/GPS integration provides reliable navigation solutions by overcoming each of their shortcomings,including signal blockage for GPS and growth of position errors with time for *** of the present navigation systems rely on Kalman filtering methods to fuse *** Kalman filtering INS/GPS integration techniques have several inadequacies related to sensor error model,immunity to noise and *** method presented in this paper,obtains the optimal state estimation by minimizing the energy function of the Hopfield neural *** new estimator relaxes the assumptions made by the Kalman filter so that it is more *** results show that the new estimator performs similarly to the Kalman *** it has some advantages such as fast convergence,unbias and high precision during fusion process,despite of the inaccurate modeling errors,system disturbance,observation errors,and even the shortage of *** as the parallel computational mode and easily carried out in hardware of the Hopfield neural network,this fusion method can improve the navigation guidance accuracy,real time ability and practicability of the INS/GPS.

关键词： Hopfield INS/GPS Integrated system State Estimation Based on Hopfield Neural Network GPS

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A virtual environment for collaborative assembly

A virtual environment for collaborative assembly

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International Conference on Embedded Software and systems

作者： Xiaowu Chen Nan Xu Ying Li Key Laboratory of Virtual Reality Technology Ministry of EducationSchool of Computer Science and Engneering Beihang University Beijing China

ISBN: (纸本)0769525121

To allow geographical dispersed engineers to perform an assembly task together, a virtual environment for collaborative assembly (VECA) has been developed to build a typical collaborative virtual assembly system. This presents the key parts of VECA, such as system architecture, HLA-based (high level architecture) communication and collaboration, motion guidance based on collision detection and assembly constraints recognition, data translation from CAD to virtual environment, reference resolution in multimodal interaction.

关键词： virtual environment Collaboration Assembly systems virtual reality Design engineering Collaborative work Application software Product design Military computing Industrial training

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JNS/GPS Integrated system State Estimation Based on Hopfield Neural Network

JNS/GPS Integrated System State Estimation Based on Hopfield...

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International Conference on Neural Networks and Brain (ICNNB)

作者： Hang Shi Jihong Zhu Zengqi Sun State Key Laboratory of Intelligent Technology and System Department of Computer Science and Technology Tsinghua University Beijing China

This paper aims at introducing state estimation in INS/GPS integrated system utilizing Hopfield neural network. INS/GPS integration provides reliable navigation solutions by overcoming each of their shortcomings, including signal blockage for GPS and growth of position errors with time for INS. Most of the present navigation systems rely on Kalman filtering methods to fuse data. Present Kalman filtering INS/GPS integration techniques have several inadequacies related to sensor error model, immunity to noise and observability. The method presented in this paper, obtains the optimal state estimation by minimizing the energy function of the Hopfield neural network. This new estimator relaxes the assumptions made by the Kalman filter so that it is more versatile. Simulation results show that the new estimator performs similarly to the Kalman filter. Furthermore it has some advantages such as fast convergence, unbias and high precision during fusion process, despite of the inaccurate modeling errors, system disturbance, observation errors, and even the shortage of observation. Also as the parallel computational mode and easily carried out in hardware of the Hopfield neural network, this fusion method can improve the navigation guidance accuracy, real time ability and practicability of the INS/GPS

关键词： Global Positioning system State estimation Hopfield neural networks Navigation Kalman filters Filtering Fuses Observability Computational modeling Convergence

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