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2nd Conference on Environmental science and Information Application Technology, ESIAT 2010

作者： Liu, Gang Wu, Chonglong Tian, Yiping Liu, Junqi Wu, Yong School of Computer Science and Technology China University of Geosciences Wuhan China Three Gorges Research Center for Geohazard Ministry of Education Wuhan China State Key Lab. of Geological Processes and Mineral Resources Wuhan China

ISBN: (纸本)9781424473885

In Three Gorges reservoir area of China, 3D visualization and analysis functions are widely needed in many works of geological hazard survey, inspection, pre-warning and treatment of local landslides and collapses, and decision making for emergency response. However, current 2D or 2.5D GIS system cannot satisfy all these kinds of requirements and a 3D visualization and analysis system of geological hazard is greatly expected. The method that combines aboveground scene with 3D visualization of underground geological bodies based on GIS and 3D modeling technology is applied to integrate multi-source geological hazard data and realize integrative analysis. Based on visualization technology, pseudo-3D geological hazard map is formed to show clearly geomorphic scene and geological environment along the reservoir banks of Yangtze River. The geological true 3D models are used in representing geological body and environment, processing the combined relationship of rock surface and structure surface, revealing feature of geological structures. system test region has 8 new migrational towns and important disaster area. An integrated 3D model will be built up based on ArcGIS, GeoView and Oracle to achieve data and function supports for pre-warning and decision-making system. ©2010 IEEE.

关键词： Hazards

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A novel clustering algorithm based on multi-sampling max-min distance and dynamic tunneling method

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Journal of Information and Computational science 2009年第2期6卷 637-642页

作者： Lv, Jia Chongqing Key Lab. of Operations Research and System Engineering College of Mathematics and Computer Science Chongqing Normal University Chongqing 400047 China

In view of the limitations that k-means clustering algorithm is sensitive to the initial points and liable to fall into local minimum point, a clustering algorithm based on multi-sampling max-min distance and dynamic tunneling method is proposed. In this algorithm, max-min distance approach combined with multi-sampling technology is used to choose the starting cluster centers optimally, and dynamic tunneling method, whose feature is its ability to search global optimum solution, is applied to skip through local minima of objective function via drilling tunnel. It is proved validity and feasibility by experiment. Copyright ©2009 Binary Information Press.

关键词： Global optimization

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Research and implementation of distributed simulation and parallel rendering system based on grid

Research and implementation of distributed simulation and pa...

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International Conference on Networking and Distributed Computing

作者： Zhang, Yaping Peng, Haoyu Wang, Zonghui Shi, Jiaoying Faculty of Computer Science and Information Technology Yunnan Normal University Kunming China College of Computer Science and Information Engineering Zhejiang Gongshang University Hangzhou China College of Computer Science and Technology Zhejiang University Hangzhou China State Key Lab. of CAD and CG Zhejiang University Hangzhou China

ISBN: (纸本)9780769542072

With the development of Grid technology and the extension of Grid application areas, it needs to provide core infrastructure platform and the necessary functional components for large-scale resources sharing and collab.ration. Based on the previous implementation of interactive Grid visualization system, this paper extends its runtime environment layer to provide Grid supports for the existing distributed simulation support platform and parallel graphics rendering system based on PC cluster, consequently realizes dynamic resource allocation and scheduling. Additionally, we present and implement a Grid-based distributed simulation and parallel rendering system which provides large-scale distributed simulation service and parallel rendering as well as high-resolution multi-screen tiled display service of massive complex scene to end users through an extended Grid portal. © 2010 IEEE.

关键词： Grid computing

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On the resistance of Boolean functions against fast algebraic attacks

On the resistance of Boolean functions against fast algebrai...

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14th International Conference on Information Security and Cryptology, ICISC 2011

作者： Du, Yusong Zhang, Fangguo Liu, Meicheng School of Information Science and Technology Sun Yat-sen University Guangzhou 510006 China Key Lab. of Network Security and Cryptology Fujian Normal University Fuzhou 350007 China State Key Laboratory of Information Security Institute of Software Chinese Academy of Sciences Beijing 100190 China

ISBN: (纸本)9783642319112

Boolean functions with large algebraic immunity resist algebraic attacks to a certain degree, but they may not resist fast algebraic attacks (FAA's). It is necessary to study the resistance of Boolean functions against FAA's. In this paper, we localize the optimal resistance of Boolean functions against FAA's and introduce the concept of e-fast algebraic immunity (e-FAI) for n-variable Boolean functions against FAA's, where e is a positive integer and . We give the sufficient and necessary condition of e-FAI. With e-FAI the problem of deciding the resistance of an n-variable Boolean function against FAA's can be converted into the problem of observing the properties of one given matrix. An algorithm for deciding e-FAI and the optimal resistance against FAA's is also described. © 2012 Springer-Verlag.

关键词： Boolean functions

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Privacy preserving personalized access control service at third service provider

Privacy preserving personalized access control service at th...

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2011 IEEE 9th International Conference on Web Services, ICWS 2011

作者： Tian, Xiuxia Sha, Chaofeng Wang, Xiaoling Zhou, Aoying School of Computer Science Fudan University Shanghai 200433 China School of Computer and Information Engineering Shanghai University of Electric Power Shanghai 200090 China Shanghai Key Lab. of Trustworthy Computing Software Engineering Institute East China Normal University Shanghai 200062 China

ISBN: (纸本)9780769544632

With the convenient connection to network, more and more individual information including sensitive information, such as contact list in Mobile Phone or PDA, can be delegated to the professional third service provider to manage and maintain. The benefit of this paradigm is, on one hand to avoid the sensitive information leakage when individual devices failed or lost, on the other hand to make only the authorized users access and share the delegated information online anytime and anywhere. However, in this paradigm the critical problems to be resolved are to guarantee both the privacy of delegated individual information and the privacy of authorized users, and what is more important to afford the owners of communication devices to have high level of control and power to create their own particular access control policies. In this paper, we present an approach to implement the personalized access control at third service provider in a privacy preserving way. Our approach implements the critical problems above in this paradigm by using selective encryption, blind signature and the combination of role based access control and discretionary access control. © 2011 IEEE.

关键词： Information management

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Intracerebral hemorrhage (ICH) evaluation with a novel magnetic induction sensor: A preliminary study using the Chinese head model

Intracerebral hemorrhage (ICH) evaluation with a novel magne...

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作者： Zhang, Ziyi Liu, Peiguo Zhou, Dongming Zhang, Liang Lei, Hengdong College of Science National University of Defense Technology Changsha Hunan410073 China State Key Lab. of Complex Electromagnetic Environ. Effects on Electronics and Information System National University of Defense Technology Changsha Hunan410073 China

Biomedical magnetic induction measurement is a promising method for the detection of intracerebral hemorrhage (ICH), especially in China. Aiming at overcoming the problem of low sensitivity, a magnetic induction sensor is chosen to replace the conventional sensors. It uses a two-arm Archimedean spiral coil as the exciter and a circular coil as the receiver. In order to carry out high-fidelity simulations, the Chinese head model with real anatomical structure is introduced into this novel sensor for the first time. Simulations have been carried out upon early stage ICH measurements. By calculating the state sensitivity and time sensitivity of the perturbation phase of two types of sensors using the electromagnetic software, we conclude that the primary signal received can be largely reduced using the novel sensor, which could effectively increase the time and state sensitivity simultaneously. © 2014 - IOS Press and the authors.

关键词： Magnetism

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Adaptive and impulsive cluster synchronization of a general complex dynamical network

Adaptive and impulsive cluster synchronization of a general ...

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2010 International Conference on Networking, Sensing and Control, ICNSC 2010

作者： Shi, Bingxiong Lu, Junan Lü, Jinhu Yu, Xinghuo College of Mathematics and Statistics State Key Lab. of Software Engineering Wuhan University Wuhan 430072 China Key Laboratory of Systems and Control Institute of Systems Science Chinese Academy of Sciences Beijing 100190 China School of Electrical and Computer Engineering RMIT University Melbourne 3000 Australia School of Electrical and Computer Engineering RMIT University Melbourne VIC 3001 Australia

ISBN: (纸本)9781424464531

Recently, cluster synchronization has attracted an increasing interest in various disciplines, includingmathematics, physics, and engineering sciences. This paper further investigates the cluster synchronization of a complex dynamical network by using adaptive and impulsive control techniques, respectively. Based on a complex dynamical network with two different clusters, several adaptive and impulsive cluster synchronization criteria are then proposed. It should be especially pointed out that the dynamics and its dimensions of the individual dynamical systems are different in the two different clusters. Also, some numerical simulations are given to verify the effectiveness of the above theoretical results. ©2010 IEEE.

关键词： Dynamical systems

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Skull-closed autonomous development: Object-wise incremental learning

Skull-closed autonomous development: Object-wise incremental...

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9th International Symposium on Neural Networks, ISNN 2012

作者： Wang, Yuekai Wu, Xiaofeng Weng, Juyang State Key Lab. of ASIC and System Fudan University Shanghai 200433 China Department of Electronic Engineering Fudan University Shanghai 200433 China School of Computer Science Fudan University Shanghai 200433 China Dept. of Computer Sci. and Eng. Michigan State University East Lansing MI 48824 United States

ISBN: (纸本)9783642313455

The series of Where-What Networks (WWNs) is a brain-inspired developmental model that simulates the dorsal (where) stream and the ventral (what) stream that converge to the motor area in the frontal cortex. Since developmental learning is always incremental, the order of different stimuli should affect the outcome of learning. In contrast to the uniform distribution of stimuli across image frames used in prior WWN experiments, this work studies non-uniform distribution in the sense that during training one object is presented at all the image locations before another object is presented. A new mechanism called cell regenesis is introduced to enable a less-often used cell to recommit its neuronal resource to new stimuli. The experimental results shown in this paper indicate that WWN-6 can deal with object-wise incremental learning. © 2012 Springer-Verlag.

关键词： computer vision

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A biologically-inspired network for generic object recognition using CUDA

A biologically-inspired network for generic object recogniti...

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2009 11th IEEE International Conference on e-Health Networking, Applications and Services, Healthcom 2009

作者： Wang, Yuekai Wu, Xiaofeng Song, Xiaoying Zhang, Wenqiang Weng, Juyang State Key Lab. of ASIC and System Fudan University Shanghai 200433 China Department of Electronic Engineering Fudan University Shanghai 200433 China School of Computer Science Fudan University Shanghai 200433 China Dept. of Computer Sci. and Eng. Michigan State University East Lansing MI 48824 United States

Generic object recognition is one of the most important fields in the artificial intelligence. Some cortex-like networks for generic object recognition are proposed these years. But most of them concentrated on the discussion about the recognition performance (such as recognition rate, number of objects to be recognized), not the practicability, i.e., implementation with ubiquitous devices and application in real time. This paper reports a try on implementation of a biologically-inspired where-what network (WWN), which integrates object recognition and attention in a single network, via parallelizing the various stages of the network training with CUDA on GPU to shorten the training time. The experiment on HAIBAO Robot exhibited in 2010 Shanghai Expo shows that this optimization can achieve a speedup of almost 16 times compared to the C-based program on an Intel Core 2 DUO 3.00 GHZ CPU in real environments. © 2012 Springer-Verlag GmbH.

关键词： Object recognition

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BIFI: Architectural support for information flow integrity measurement

BIFI: Architectural support for information flow integrity m...

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International Conference on computer science and software Engineering, CSSE 2008

作者： Hao, Hu Dengguo, Feng Dept. of Electronic Engineering and Information Science University of Science and Technology of China Hefei 230027 China The State Key Lab. of Information Security Institute of Software Chinese Academy of Sciences National Engineering Research Center for Information Security Beijing 100190 China

ISBN: (纸本)9780769533360

Information flow security has been an important security requirement of existing operating systems, especially for distributed applications. We are interested in protecting information flow security with an eye to information flow integrity and trusted computing. Although people have studied these two aspects already, each alone is insufficient for system security. In this paper, we design an information flow integrity architecture called BIFI based on classical integrity model with trusted computing technology. Firstly, we define an extension to Biba integrity, called Biba-invoke, which has ameliorated the monotonic behavior of Biba. Secondly, in order to support our integrity model, modifications to the SELinux and kernel module of Linux is necessary. We prove that BIFI can protect information flow integrity with only a few changes to existing systems. © 2008 IEEE.

关键词： Trusted computing

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