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IEEE GLOBECOM 2007 - IEEE Global Telecommunications Conference

作者： Paulo F. Silva Carlos B. Westphall Carla M. Westphall Marcos Dias de Assuncao Network and Management Laboratory Post-Graduate Program in Computer Science Federal University of Santa Catarina Florianopolis Brazil Grid Computing and Distributed Systems Laboratory Department of Computer Science and Software Engineering University of Melbourne VIC Australia

Intrusion detection systems (IDSs) have been substantially improved in recent past. However, network attacks have become more sophisticated and increasingly complex: many of current attacks are coordinated and originated in multiple networks. To detect these attacks, IDSs need to obtain information on network events from multiple networks or administrative domains. This work demonstrates that a Distributed IDS (DIDS) can be composed of existing IDSs, improving the detection of misuses in a multiple network environment. We use a grid middleware for creating a service-based intrusion detection grid. We demonstrate through experimental results that the proposed DIDS allows the integration of heterogeneous existing IDSs and improves the detection of attacks by exploring the synergy between existing IDSs.

关键词： Grid computing Computer architecture Intrusion detection Resource management Laboratories Computer science Electronic mail Middleware Computer network management Engineering management

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A Global Prototype for Traffic Injury Surveillance System

A Global Prototype for Traffic Injury Surveillance System

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IEEE EMBS International Conference on Information Technology Applications in Biomedicine (ITAB)

作者： Achala Upendra Jayatilleke Chandrajith Ashuboda Marasinghe Shinji Nakahara S Lambacher ST Nandasara Achini Jayatilleke Department of International Community Health Graduate School of Medicine University of Tokyo Bunkyo Tokyo Japan Department of Management and Information Systems Engineering Nagaoka University of Technology Nagaoka Niigata Japan Department of Preventive Medicine Saint Marianna University School of Medicine Kawasaki Kanagawa Japan Center for Language Research University of Aizu Fukushima Japan University of Colombo School of Computing Colombo Sri Lanka

Without increased effort and new initiatives, the total number of road traffic deaths and injuries worldwide could rise by some 65 percent between 2000 and 2020, while deaths in low and middle income countries are expected to increase by 80 percent. Hence prevention is the best remedy for this global public health problem. For the effective prevention of road traffic injuries, accurate information on modes, patterns and trends of traffic injuries are mandatory. WHO is encouraging the establishment of such data collection systems by publishing guidelines on injury surveillance. We compared the data fields of the existing traffic injury surveillance systems of the Asian countries of Thailand, Cambodia, Sri Lanka, and Japan with WHO guidelines and examined the possibilities of compiling a global database. Although the surveillance systems of these four countries share a lot of similarities, there are variations in code choices. In spite of such variations, RTI data can be integrated into a common global data bases by applying information technology.

关键词： Prototypes Injuries Surveillance Databases Roads Guidelines Public healthcare Monitoring Conference management Information management

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Dual-layered file cache on cc-NUMA system 20

Dual-layered file cache on cc-NUMA system

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20th IEEE International Parallel and Distributed Processing Symposium, IPDPS 2006

作者： Zhou, Yingchao Meng, Dan Ma, Jie National Research Center for Intelligent Computing Systems Institute of Computing Technology Chinese Academy of Sciences Beijing 100080 China Graduate School Chinese Academy of Sciences China

ISBN: (纸本)1424400546

CC-NUMA is a widely adopted and deployed architecture of high performance computers. These machines are attractive for their transparent access to local and remote memory. However, the prohibitive latency gap between local and remote access deteriorates applications' performance seriously due to memory access stalls. File system cache, especially, being shared by all processes, inevitably triggers many remote accesses. To address this problem, we suggest and implement a mechanism that uses local memory to cache remote file cache, of which the main purpose is to improve data locality. Using realistic workload on a two-node cc-NUMA machine, we show that the cost of such a mechanism is as low as 0.5%, the performance can be increased 14.3% at most, and the local hit ratio can be improved as much as 40%. © 2006 IEEE.

关键词： Buffer storage

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Gaussian mixture model with Markov random field for MR image segmentation

Gaussian mixture model with Markov random field for MR image...

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2006 IEEE International Conference on Industrial Technology, ICIT

作者： Huiguang, He Ke, Lu Bin, Lv Key Laboratory of Complex Systems and Intelligence Science Chinese Academy of Sciences College of Computing and Communication Engineering Graduate University CAS

ISBN: (纸本)1424407265

In this paper, we propose a powerful fully automated classification method, which is based on Gaussian-Mixture Model with Markov Random Field (MRF). First, anisotropic diffusion is performed on the MR image to improve the signal noise ratio while keeping the edge;second, skull-stripping technique is applied to separate brain/non-brain tissue;third, histogram analysis is used to get the initial classification;finally, GMM-MRF is used to get the final classification. The method has been validated on simulated and real MR images for which gold standard segmentation available. The experimental results show that the proposed method is more accurate and robust than currently available models.

关键词： Image segmentation

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Robust partial volume segmentation with bias field correction in brain MRI

Robust partial volume segmentation with bias field correctio...

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18th International Conference on Pattern Recognition, ICPR 2006

作者： Huiguang, He Bin, Lv Ke, Lu Key Laboratory of Complex Systems and Intelligence Science Chinese Academy of Sciences College of Computing and Communication Engineering Graduate University CAS

ISBN: (纸本)0769525210

In MR imaging, image noise, bias field, and partial volume effect are adverse phenomena that increases intertissue overlapping and hampers quantitative analysis. This study provides a powerful fully automated classification method, which combines the bias field correction and PV segmentation together. The method has been validated on simulated and real MR images for which gold standard segmentation available. The experimental results show that the proposed method is more accurate and robust than currently available models. © 2006 IEEE.

关键词： Image segmentation

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Resident participating GIS-based tsunami disaster control systems for local communities

Resident participating GIS-based tsunami disaster control sy...

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International Symposium on Communications and Information Technologies

作者： Muramoto, Takashi Nakayama, Ken Kobayashi, Yoshitake Maekawa, Mamoru Faculty of Business Hachinohe University Aomori Japan Department of Information Systems Design Graduate School of Information Systems University of Electro-Communications Tokyo Japan Grid Computing and Distributed Systems (GRIDS) Laboratory Department of Computer Science and Software Engineering University of Melbourne Australia

ISBN: (纸本)9780780397408

We propose and experiment a Social Networking Service (SNS) for local communities for tsunami disaster control. It is an easy-to-use GIS-based system with powerful GIS analysis capabilities. One of the features of the system is resident participation. The GIS layer structure proposed in this paper nicely supports this user participation. The system architecture and the use of the system for tsunami disaster control are discussed. We report ongoing developments in Hachinohe-City, Japan.

关键词： GIS tsunami disaster control internet application system design

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An introduction to aggregation grid

An introduction to aggregation grid

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2nd International Conference on Semantics, Knowledge, and Grid, SKG 2006

作者： Zhu, Dingju Fan, Jianping Institute of Computing Technology Chinese Academy of Sciences China Institute of Advanced Technology Chinese Academy of SciencesChina National Research Center for Intelligent Computing SystemsChina Graduate School of the Chinese Academy of Sciences China

ISBN: (纸本)076952673X

Aggregation grid enables all grid nodes connected with a hierarchical architecture into a world-wide grid which can provide all services to all grid nodes for anyone who visits any grid node in the aggregation grid. Once users submit service requests anywhere, the aggregation grid would find the service regardless of where the service is, and will provide the service to users' desktop. Service discovery is fast through lookup service snapshot, aggregation path table and aggregation route table, can find the best service provider through man-made response latency, and is safe through agent aggregation node's symmetrical password. The grid channel, which is very safeguarded by authentication of the display, the borrower node's public key for encryption, the lender node's public key for encryption, the grid channel's symmetrical password, directly connects users and services in order to cut down transfer time. © 2006 IEEE.

关键词： Authentication

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Generating different realistic humanoid motion

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16th International Conference on Artificial Reality and Telexistence, ICAT 2006

作者： Li, Zhenbo Deng, Yu Li, Hua Key Lab. of Computer System and Architecture Institute of Computing Technology Chinese Academy of Sciences Beijing 100080 China National Research Center for Intelligent Computing Systems Institute of Computing Technology Chinese Academy of Sciences Beijing 100080 China Graduate University of Chinese Academy of Sciences Beijing 100039 China

ISBN: (纸本)3540497765

Different realistic humanoid motion can be used in vary situations in animation. It also plays an important role in virtual reality. In this paper, we propose a novel method to generate different realistic humanoid motion automatically. Firstly, eigenvectors of a motion sequence is computed using principle component analysis. The principle components are served as "virtual joints" in our system. The number of "virtual joints" can be used to control the realistic level of motions. After given the "virtual joints" number, the actual joints' parameters of new motion are computed using the selected "virtual joints". The experiments illuminate that this method has good ability to generate different realistic level motions. © 2006 Springer-Verlag Berlin/Heidelberg.

关键词： Principal component analysis

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Modeling and verifying Web services driven by requirements:An ontology-based approach

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Science in China(Series F) 2006年第6期49卷 792-820页

Automatic discovery and composition of Web services is an important research area in Web service technology, in which the specification of Web services is a key issue. This paper presents a Web service capability description framework based on the environment ontology. This framework depicts Web services capability in two aspects： the operable environment and the environment changes resulting from behaviors of the Web service. On the basis of the framework, a requirement-driven Web service composition model has been constructed. This paper brings forward the formalization of Web service interactions with π calculus. And an automatic mechanism converting conceptual capability description to the formal process expression has been built. This kind of formal specification assists in verifying whether the composite Web service model matches the requirement.

关键词： Web service environment ontology automatic composition π calculus formal verification.

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Dual-layered file cache on cc-NUMA system 06

Dual-layered file cache on cc-NUMA system

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Proceedings of the 20th international conference on Parallel and distributed processing

作者： Yingchao Zhou Dan Meng Jie Ma National Research Center for Intelligent Computing Systems Institute of Computing Technology Chinese Academy of Sciences Beijing P.R. China and Graduate School of the Chinese Academy of Sciences National Research Center for Intelligent Computing Systems Institute of Computing Technology Chinese Academy of Sciences Beijing P.R. China

ISBN: (纸本)9781424400546

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