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International Workshop on Database and Expert Systems Applications

作者： L. Barolli Y. Honma A. Koyama A. Durresi J. Arai Department of Information and Communication Engineering Fukuoka Institute of Technology Japan Graduate School of Science and Engineering Yamagata University Japan Department of Informatics Yamagata University Japan Department of Computer Science Louisiana State University USA

One of well-known routing protocol for ad hoc networks is zone routing protocol (ZRP). The performance of ZRP is better than other protocols. However, many useless control packets are used resulting in the increase of network load and decrease of network performance. In this paper, we propose a selective border-casting zone routing protocol (SBZRP) to reduce the network load by limiting the number of control packets when the protocol searches for a new route. The performance evaluation via simulations shows that the SBZRP has better performance than ZRP.

关键词： Routing protocols Ad hoc networks Peer to peer computing Personal digital assistants Network topology Clustering algorithms computer networks Wireless LAN Mobile communication Mobile ad hoc networks

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Feature extraction of EEG signals during right and left motor imagery

Feature extraction of EEG signals during right and left moto...

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SICE Annual Conference

作者： K. Inoue D. Mori K. Sugioka G. Pfurtscheller K. Kumamaru Department of Control Engineering and Science Factory of Computer Science and Systems Engineering Kyushu Institute of Technology Fukuoka Japan Department of Control Enginering and Science Kyusbu Institute of Technology Iizuka Fukuoka Japan Department of Medical Informatics Graz University of Technology Inffeldgasse Graz Austria

In this paper, feature extraction of EEG signals during right and left motor imagery is tried. As the extraction method, directed information analysis, pattern recognition based on AR model, and mixture probability algorithm based on AR model is used. The learning and feature extraction method in pattern recognition are discussed through the experimental studies.

关键词： Feature extraction Electroencephalography Brain modeling Monitoring Data mining Pattern recognition information analysis Biomedical engineering Brain computer interfaces Clustering algorithms

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Electronic national lotteries

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8th International Conference on Financial Cryptography, FC 2004

作者： Konstantinou, Elisavet Liagkou, Vasiliki Spirakis, Paul Stamatiou, Yannis C. Yung, Moti Research and Academic Computer Technology Institute P.O. Box 1122 Patras26110 Greece Department of Computer Engineering and Informatics University of Patras Patras26500 Greece Department of Mathematics University of the Aegean Karlovassi Samos83200 Greece on Communications and Information Systems Security University of the Aegean and Athens University of Economics and Business Greece Computer Science Columbia University New YorkNY United States

ISBN: (纸本)3540224203

We describe the design and implementation of secure and robust protocol and system for a national electronic lottery. Electronic lotteries at a national level are a viable cost effective alternative to mechanical ones when there is a business need to support many types of "games of chance" and to allow increased drawing frequency. Electronic lotteries are, in fact, extremely high risk financial application: If one discovers a way to predict or otherwise claim the winning numbers (even once) the result is huge financial damages. Moreover, the e-lottery process is complex, which increases the possibility of fraud or costly accidental failures. In addition, a national lottery must adhere to auditability and (regulatory) fairness requirements regarding its drawings. Our mechanism, which we believe is the first one of its kind to be described in the literature, builds upon a number of cryptographic primitives that ensure the unpredictability of the winning numbers, the prevention of their premature leakages and prevention of fraud. We also provide measures for auditability, fairness, and trustworthiness of the process. Besides cryptography, we incorporate security mechanisms that eliminate various risks along the entire process. Our system which was commissioned by a national organization, was implemented in the field and has been operational and active for a while, now. © IFCA/Springer-Verlag Berlin Heidelberg 2004.

关键词： Cryptography

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Preface 4th

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4th International Conference on Rough Sets and Current Trends in Computing, RSCTC 2004

作者： Tsumoto, Shusaku Slowiski, Roman Komorowski, Jan Grzymala-Busse, Jerzy W. Shimane University School of Medicine Department of Medical Informatics 89-1 Enya-cho Izumo Shimane Japan Poznan University of Technology Institute of Computing Science Piotrowo 3a Poznan Poland Uppsala University The Linnaeus Centre for Bioinformatics BMC Box 598 Husargatan 3 Uppsala Sweden University of Kansas Department of Electrical Engineering and Computer Science LawrenceKS United States

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Control system for MR-guided cryotherapy - Short-term prediction of therapy boundary using automatic segmentation and 3D optical flow

Control system for MR-guided cryotherapy - Short-term predic...

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medical Image Computing and computer-Assisted Intervention, MICCAI 2004 - 7th International Conference, Proceedings

作者： Nakamura, Ryoichi Tuncali, Kemal Morrison, Paul R. Hata, Nobuhiko Silverman, Stuart G. Kikinis, Ron Jolesz, Ferenc A. Zientara, Gary P. Institute of Advanced Biomedical Engineering and Science Tokyo Women's Medical University 8-1 Kawada-cho Shinjuku Tokyo 162-8666 Tokyo Japan Dept. of Radiology Brigham and Women's Hospital Harvard Medical School 75 Francis Street Boston MA 02115 United States Dept. of Mechano-informatics Graduate School of Information Science and Technology Univ. of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan

ISBN: (纸本)3540229779

During cryotherapy, it is extremely useful for the interventionalists to have available intra-operatively a 3D iceball visualization, to ensure the effectiveness and safety of the procedure. Additionally, it highly beneficial to provide the interventionalists with a best estimate of how the iceball will grow in the future, and an estimate of the extent to which the target region and the tissues around it will be ablated. In this study, we introduce a newly developed control system for cryotherapy using a novel approach for the real-time/future-predicted assessments of the treatment. The system has been validated using results from cryotherapy experiments. © Springer-Verlag Berlin Heidelberg 2004.

关键词： Cryotherapy

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A novel distributed control architecture for shared protection

A novel distributed control architecture for shared protecti...

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IEEE Conference and Exhibition on Global Telecommunications (GLOBECOM)

作者： J. Tapolcai Pin-Han Ho Xiaohong Jiang S. Horiguchi Department of Electrical and Computer Engineering University of Waterloo ONT Canada Department of Telecommunications and Media Informatics Budapest University슠of슠Technology슠and슠Economics Budapest Hungary Graduate School of Information Science Japan Advanced Institute of Science and Technology Japan

The paper proposes a novel distributed control architecture for shared protection with reduced complete routing information, which aims to initiate a graceful compromise between the amount of link-state dissemination and the performance impairment due to the incompleteness of routing information. We first give explicit and comprehensive descriptions on a number of reported routing information dissemination scenarios for shared protection. A novel framework of link-state dissemination for facilitating shared protection, called reduced complete routing scenario, is introduced, in which the singular value decomposition (SVD) transformation is adopted to deal with the information reduction. We show, through simulation, that the proposed scheme can achieve a higher throughput and a better estimation in reconstruction of the spare provision matrix than the other schemes taking the same complexity of link-state dissemination.

关键词： Distributed control Protection Resource management Routing protocols Costs Scalability information management computer architecture informatics information science

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Biological data management: research, practice and opportunities 04

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Proceedings of the Thirtieth international conference on Very large data bases - Volume 30

作者： Thodoros Topaloglou Susan B. Davidson H. V. Jagadish Victor M. Markowitz Evan W. Steeg Mike Tyers Scientific Computing MDS proteteomics Toronto Canada Computer Information Science and Bioinformatics UPenn Electrical Engineering and Computer Science and Bioinformatics University of Michigan Genome Institute and Head of Biological Data Management and Technology Center at Lawrence Berkeley National Laboratory Independent Bioinformatics Consultant Samuuel Lunenfeld Reserach Institute and Professor of Medical Genetics and MicroBiology University of Toronto

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Association tests and estimation of haplotype frequencies and of penetrance-related parameters in a case-control study

Association tests and estimation of haplotype frequencies an...

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Proceedings of the IEEE Computational Systems Bioinformatics Conference, CSB

作者： S. Furihata T. Ito N. Kamatani Japan Biological Information Research Center Japan Biological Informatics Consortium Koto Tokyo Japan Mitsubishi Research Institute INC. Chiyoda Tokyo Japan Division of Genomic Medicine Department of Advanced Biomedical Engineering and Science and Institute of Rheumatology Tokyo Womens Medical University Shinjuku Tokyo Japan

This study shows the applicability of our algorithm which tests haplotype and qualitative phenotype association, in a case-control study. Although our algorithm named PENHAPLO is originally developed for analysis of a cohort study, it is shown that PENHAPLO is a useful tool for analysis of case-control studies as well. Simulations confirms that type I errors under null hypothesis are accurately estimated. The statistical power for alternative hypothesis calculated using the algorithm is comparable to those analyzed using known-phase data.

关键词： Frequency estimation Testing Algorithm design and analysis Bioinformatics Data analysis Diseases Biomedical informatics Indium tin oxide Genomics Biomedical engineering

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Image improvement in pinhole SPECT using complete data acquisition combined with statistical image reconstruction

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International Congress Series 2004年第C期1265卷 101-105页

作者： Zeniya, Tsutomu Watabe, Hiroshi Aoi, Toshiyuki Kim, Kyeong Min Teramoto, Noboru Hayashi, Takuya Sohlberg, Antti Kudo, Hiroyuki Iida, Hidehiro Department of Investigative Radiology National Cardiovascular Center Research Institute Suita Osaka 565-8565 5-7-1 Fujishiro-dai Japan Department of System Science Graduate School of Informatics Kyoto University Kyoto 606-8501 Yoshida-Honmachi Sakyo Japan Department of Clinical Physiology and Nuclear Medicine Kuopio University Hospital FIN-70211 Kuopio P.O. Box 1777 Finland Department of Computer Science Graduate School of Systems and Information Engineering University of Tsukuba Ibaraki 305-8573 1-1-1 Tennoudai Tsukuba Japan

Pinhole single-photon emission computed tomography (SPECT) with high spatial-resolution is suitable for small-animal imaging, but has limitations associated with spatial-resolution inhomogeneity or axial blurring. We have hypothesized that this blurring is due to incompleteness of projection data acquired by a single circular pinhole orbit. And we have developed a pinhole SPECT system with two circular orbits which satisfy Tuy's condition so as to provide complete data for 3D pinhole SPECT reconstruction within the whole field-of-view (FOV);a dedicated 3D ordered subsets expectation maximization (3D-OSEM) reconstruction method for two-orbit data. This study is aimed at evaluating accuracy and impact of this system. In this system, not the camera but the object rotates and the two orbits are 90° and 45° relative to object's axis. Experiments using a multiple-disk phantom filled with ^99mTc solution and a mouse bone scan using ^99mTc-labeled HMDP agent were carried out. The Feldkamp's filtered back-projection (FBP) method and the 3D-OSEM method were applied to these data sets. The axial blurring was apparent on images reconstructed by FBP for single-orbit data, while the 3D-OSEM using two-orbit data dramatically improved the resolution homogeneity and statistical noise property, and also demonstrated considerably better image quality in the mouse scan. © 2004 Elsevier B.V.

关键词： Complete data acquisition Pinhole SPECT Small animal Statistical image reconstruction Tuy's condition

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Spatial, temporal and spatio-temporal databases - Hot issues and directions for PhD research

Spatial, temporal and spatio-temporal databases - Hot issues...

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作者： Roddick, John F. Egenhofer, Max J. Hoel, Erik Papadias, Dimitris Salzberg, Betty Sch. of Informatics and Engineering Flinders University GPO Box 2100 Adelaide SA 5001 Natl. Ctr. for Geogr. Info./Analysis University of Maine Orono ME 04469-5711 United States Research and Development Environ. Systems Research Institute 380 New York Street Redlands CA 92373 United States Department of Computer Science Hong Kong Univ. of Sci./Technology Clearwater Bay Hong Kong Hong Kong Coll. of Comp./Information Science Northeastern University Boston MA 02115 United States

Spatial and temporal database systems, both in theory and in practice, have developed dramatically over the past two decades to the point where usable commercial systems, underpinned by a robust theoretical foundation, are now starting to appear. While much remains to be done, topics for research must be chosen carefully to avoid embarking on impractical or unprofitable areas. This is particularly true for doctoral research where the candidate must build a tangible contribution in a relatively short time. The panel session at the Eighth International Symposium on Spatial and Temporal Databases (SSTD 2003) held on Santorini Island, Greece [7] in July 2003 thus took as its focus the question What to focus on (and what to avoid) in Spatial and Temporal Databases : recommendations for doctoral research. This short paper, authored by the panel members, summarizes these discussions.

关键词： Database systems

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