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International Conference on Computational Cybernetics (ICCC)

作者： Alexandros Soumelidis József Bokor Ferenc Schipp Computer and Automation Research Institute Hungarian Academy of Sciences (ATOMKI) Budapest Hungary Computer and Automation Research Institute and Control Engineering Research Group Hungarian Academy of Sciences (ATOMKI) Budapest Hungary Department of Numerical Analysis Faculty of Informatics Eötvös Lonránd University Budapest Hungary

This paper investigates signal and system representations in special rational orthogonal bases of the Hardy space H 2 . These bases are derived from the Blaschke-group associated to the hyperbolic group SH(n) of matrices. Using the concept of the unitary group representations over H 2 , and the voice-transform, specific hyperbolic wavelet constructions - Blaschke-wavelets and the associated Blaschke-Fourier transform are constructed. State space representations of systems over hyperbolic groups are discussed, too, with the purpose to explore the perspectives of elaborating a unified system theory upon this conceptual base.

关键词： Risk management Decision making Fuzzy sets Uncertainty Fuzzy set theory Reliability engineering Risk analysis Cybernetics Fuzzy systems informatics

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Quantitative comparison of spot detection methods in live-cell fluorescence microscopy imaging

Quantitative comparison of spot detection methods in live-ce...

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IEEE International Symposium on Biomedical Imaging

作者： Ihor Smal Marco Loog Wiro Niessen Erik Meijering Biomedical Imaging Group Rotterdam Departments of Medical Informatics and Radiology Erasmus MC-University Medical Center Rotterdam Netherlands Pattern Recognition Group Faculty of Electrical Engineering Mathematics and Computer Science Delft University of Technnology Netherlands

ISBN: (纸本)9781424439317

In live-cell fluorescence microscopy imaging, quantitative analysis of biological image data generally involves the detection of many subresolution objects, appearing as diffraction-limited spots. Due to acquisition limitations, the signal-to-noise ratio (SNR) can be extremely low, making automated spot detection a very challenging task. In this paper, we quantitatively evaluate the performance of the most frequently used supervised and unsupervised detection methods for this purpose. Experiments on synthetic images of three different types, for which ground truth was available, as well as on real image data sets acquired for two different biological studies, for which we obtained expert manual annotations for comparison, revealed that for very low SNRs (ap2), the supervised (machine learning) methods perform best overall, closely followed by the detectors based on the so-called h-dome transform from mathematical morphology and the multiscale variance-stabilizing transform, which do not require a learning stage. At high SNRs (>5), the difference in performance of all considered detectors becomes negligible.

关键词： Fluorescence Microscopy Object detection Detectors Biomedical imaging Machine learning Image analysis Diffraction Signal to noise ratio Filtering

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On the complexity of dissociation set problems in graphs

On the complexity of dissociation set problems in graphs

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作者： Orlovich, Yury Dolgui, Alexandre Finke, Gerd Gordon, Valery Werner, Frank Belarus State University Faculty of Applied Mathematics and Computer Science Independence Av. 4 220030 Minsk Belarus Ecole des Mines de Saint Etienne Industrial Engineering and Computer Science Centre 158 cours Fauriel F-42023 Saint Etienne Cedex 2 France University Joseph Fourier Laboratory G-SCOP 46 Avenue Felix Viallet 38031 Grenoble France National Academy of Sciences of Belarus United Institute of Informatics Problems Surganova 6 220012 Minsk Belarus Otto-von-Guericke-University of Magdeburg Institute of Mathematical Optimization Universitatsplatz 2 39106 Magdeburg Germany

ISBN: (纸本)9783902661432

A subset of vertices in a graph is called a dissociation set if it induces a subgraph with vertex degree at most 1. A dissociation set D is maximal if no other dissociation set contains D. The complexity of finding a dissociation set of maximum size in line graphs and finding a maximal dissociation set of minimum size in general graphs is considered. © 2009 IFAC.

关键词： Graph theory

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Naturally occurring data as research instrument: Analyzing examination responses to study the novice programmer

SIGCSE Bulletin Inroads

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SIGCSE Bulletin Inroads 2009年第4期41卷

作者： Clear, Tony Bouvier, Dennis J. Jacková, Jana Robbins, Phil Lister, Raymond Carter, Paul Lopez, Mike Seppälä, Otto Simon Eckerdal, Anna McCartney, Robert Thompson, Errol School of Comp. and Math. Sciences AUT University New Zealand Department of Computer Science Southern Illinois Univ. Edwardsville United States Faculty of Manag. Sci. and Informatics University of Zilina Slovakia Department of Computer Science University of British Columbia Canada Manukau Institute of Technology New Zealand Dept. of Computer Science and Engineering Helsinki University of Technology Finland Faculty of Science and IT University of Newcastle Australia Dept of Information Technology Uppsala University Sweden Dept Comp. Sci. and Engineering University of Connecticut United States United Kingdom

In New Zealand and Australia, the BRACElet project has been investigating students' acquisition of programming skills in introductory programming courses. The project has explored students' skills in basic syntax, tracing code, understanding code, and writing code, seeking to establish the relationships between these skills. This ITiCSE working group report presents the most recent step in the BRACElet project, which includes replication of earlier analysis using a far broader pool of naturally occurring data, refinement of the SOLO taxonomy in code-explaining questions, extension of the taxonomy to code-writing questions, extension of some earlier studies on students' 'doodling' while answering exam questions, and exploration of a further theoretical basis for work that until now has been primarily empirical.

关键词： Students

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The comparative analysis of image restoration represented as a matrix and as a vector using feed forward neural networks

The comparative analysis of image restoration represented as...

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Optical Pattern Recognition XX

作者： Mardare, Igor Perju, Veacheslav Casasent, David Ghincul, Olga Technical University of Moldova Department of Design and Manufacturing of Electronic Apparatus Stefan cel Mare Av. 168 Chisinau MD-2012 Moldova Technical University of Moldova Department of Informatization Stefan cel Mare Av. 168 Chisinau MD-2012 Moldova Free International University of Moldova Faculty of Informatics and Engineering Vlaicu Pircalab St. 52 Chisinau MD-2004 Moldova Carnegie Mellon University Department of Electrical and Computer Engineering Pittsburgh PA 15213 United States

ISBN: (纸本)9780819476067

This work contains the results of the experiments on the restoration of the defective images proceeded in a matrix and a vector form with the help of the feed forward neural network. Sometimes it is convenient to represent an image as a vector rather than as a matrix. So the target of this work is to show experimentally what kind of input provides a better restoration, judging from the Euclid's distance of the output of a trained network. This work also shows the differences between processing different types of image presentation of the neuron network. Making a comparative analysis of a matrix and a vector form of presenting the images which are proceeded to a feed forward network allows stating some specific characteristics of a network. These characteristics include the optimal architecture of a network, the number of layers, the number of neurons in each layer and the time of an image restoration. Taking into account the network's characteristics and the most important factor - the Euclid's distance, are drawn conclusions that concern what is the best way of representing images that we want to restore using a feed forward network. © 2009 SPIE.

关键词： Image reconstruction

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MedSiGRe: Medical Signal Grid Repository, an integration to Italica project

MedSiGRe: Medical Signal Grid Repository, an integration to ...

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Latin American Network Operations and Management Symposium, (LANOMS)

作者： Federico Milano Juan Francisco Garcia Eijo Adrian Gomez Fernan Gonzalez Bernaldo de Quiros Marcelo Risk Department of Information Systems Engineering Buenos Aires Regional Faculty National Technological University Argentina Laboratory of Complex Systems Department of Computer Science FCEyN University of Buenos Aires Argentina Department of Biomedical Informatics Italian Hospital of Buenos Aires Argentina

The Italica Project is the implementation of an electronic health record system at the Italian Hospital of Buenos Aires. The present work shows the implementation of a medical signal grid repository module and its integration to the Italica Project. We also describe the architecture of that module and explain the design decisions taken for its construction. The integration to the preexisting system is also presented, together with the difficulties that arose from the insertion of a data grid in an environment not used to this technology. Several issues about the security and reliability of the medical data are treated as well. In this paper we also discuss the use of the grid repository as a starting point for the development of distributed processing applications.

关键词： Java Protocols Virtual machining System testing Sockets Internet Performance evaluation Operating systems Educational programs computer languages

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Implementation of an E-learning System Using P2P, Web and Sensor Technologies

Implementation of an E-learning System Using P2P, Web and Se...

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International Conference on Advanced Information Networking and Applications (AINA)

作者： Keita Matsuo Leonard Barolli Fatos Xhafa Valadi Kolici Akio Koyama Arjan Durresi Rozeta Miho Graduate School of Engineering Fukuoka Institute of Technology Japan Department of Information and Communication Engineering FIT Fukuoka Japan Department of Languages and Informatics Systems Technical University of Catalonia Barcelona Spain Department of Electronics and Telecommunication Polytechnic University of Tirana Tirana Albania Department of Informatics Faculty of Engineering Yamagata University Yonezawa Yamagata Japan Department of Computer and Information Science Indiana University-Purdue University Indianapolis Indianapolis IN USA

This work is motivated by the need to develop decentralized P2P approaches to support learning and teaching activity in virtual universities. In this paper, we present the implementation of the JXTA-based e-learning P2P system. We also show the design and implementation of a SmartBox environment that will be used for stimulating the learners to increase the learning efficiency. The proposed e-learning P2P system is a useful tool for monitoring and controlling learnerspsila activity. We evaluate the proposed system by experimental results and show that proposed system has a good performance. In the future, we aim to use it in real virtual campus environments.

关键词： Electronic learning Sensor systems Electronic mail Information security Peer to peer computing Communication system control informatics Education Control systems Internet

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Intelligent End-To-End Resource Virtualization Using Service Oriented Architecture

Intelligent End-To-End Resource Virtualization Using Service...

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IEEE Globecom Workshops

作者： E. Onur E. Sfakianakis C. Papagianni G. Karagiannis T. Kontos I. Niemegeers I. P. Chochliouros S. Heemstra de Groot P. Sjodin M. Hidell T. Cinkler M. Maliosz D. I. Kaklamani J. Carapinha M. Belesioti E. Fytros Faculty of Electrical Engineering Mathematics and Computer Science Delft University of Technnology Netherlands Laboratories & New Technologies Division Research Programs Section Hellenic Telecommunications Organization S. A. Athens Greece School of Electrical and Computer Engineering National and Technical University of Athens Greece Department of Electrical Engineering Mathematics and Computer Science and CTIT University of Twente Enschede Netherlands Siemens IT Solutions and Services Athens Greece Twente Institute for Wireless and Mobile Communications Enschede Netherlands School of Information and Communication Technology Royal Institute of Technology Stockholm Sweden Department of Telecommunications and Media Informatics Budapest University슠of슠Technology슠and슠Economics Hungary Portugal Telecom Group PT Inovação S A Portugal

Service-oriented architecture can be considered as a philosophy or paradigm in organizing and utilizing services and capabilities that may be under the control of different ownership domains. Virtualization provides abstraction and isolation of lower level functionalities, enabling portability of higher level functions and sharing of physical resources. However, dynamics, environmental conditions and increasing complexity / heterogeneity of underlying resources call for adaptive resource handling. In this view an intelligent distributed architecture that enables dynamic user management and control on network-wide resource sharing by using the service oriented architecture concept is presented. Additionally, the proposed architecture supports trading of resources that will enable the transformation of traditional business models.

关键词： Resource virtualization Service oriented architecture Resource management computer networks Grid computing Cloud computing Mathematics computer science Organizing Hardware

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Fixed point transformations in the adaptive control of fractional-order MIMO systems

Lecture Notes in Control and Information Sciences

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Lecture Notes in Control and Information Sciences 2009年 396卷 103-112页

作者： Tar, József K. Rudas, Imre J. Nádai, László Kozlowski, Krzysztof R. MacHado, José A. Tenreiro Institute of Intelligent Engineering Systems John von Neumann Faculty of Informatics Budapest Tech Bécsi út 96/B Budapest H-1034 Hungary Computer and Automation Research Institute Hungarian Academy of Sciences Kende u. 13-17 Budapest H-1111 Hungary Chair of Control and Systems Engineering Poznań University of Technology ul. Piotrowo 3a Poznań 60-965 Poland Department of Electrotechnical Engineering Institute of Engineering of Porto Rua Dr. Antonio Bernardino de Almeida Porto 4200-072 Portugal

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Whole body interaction

Whole body interaction

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27th International Conference Extended Abstracts on Human Factors in Computing Systems, CHI 2009

作者： England, David Romero, Pablo Hornecker, Eva Fergus, Paul Roast, Chris Marshall, Paul School of Computing and Maths Liverpool John Moores University Liverpool L3 3AF United Kingdom Department of Informatics University of Sussex Brighton BN1 9QJ United Kingdom Dept. of Computer and Information Science Strathclyde University Glasgow G1 1XH United Kingdom Faculty of Arts Computing Engineering and Science Sheffield Hallam University Sheffield S1 1WB United Kingdom Computing Department Open University Milton Keynes MK7 6AA United Kingdom

In this workshop we explore the notation of whole body interaction. We bring together different disciplines to create a new research direction for study of this emerging form of interaction.

ISBN: (纸本)9781605582474

In this workshop we explore the notation of whole body interaction. We bring together different disciplines to create a new research direction for study of this emerging form of interaction.

关键词： Motion capture Multi-modal Physicality Whole body interaction

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