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International Conference on High Performance Computing in the Asia-Pacific Region

作者： Doosik Park Sang-Moon Lee Changsung Lee Soonchurl Shin Young-Ae Kang Minho Ban Woojin Yang Seungwhan Kim Inho Lee Server R&D Group Computer Systems Division Digital Media Business Samsung Electronics Company Limited South Korea Computational Science & Engineering Center Digital Research Center Samsung Advanced Institute of Technology

We introduce a new concept of management system based on the scalable communication framework effectively working on mixture of several complex layers including private networks. Overlay network architecture with virtual IP addressing has been applied to identify nodes uniquely. Inter-node communication on different private networks is ensured by defined complex network protocol (CNP). We also develop a communication middleware for the cluster management system called SARK (scalable architecture routing kernel). The total elapsed time for gathering all information and its system overhead are measured. The scalability test performed on the cluster of clusters which contains 100 nodes, and shows our proposed work would be scalable in the cluster of 4,000 nodes. Therefore, our scalable communication framework would be considered as a suitable method for monitoring and controlling a large cluster system on mixture of several complex network layers

关键词： Monitoring Communication system control Complex networks Protocols Middleware Routing Kernel Time measurement Scalability Testing

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Example-based robust outlier detection in high dimensional datasets

Example-based robust outlier detection in high dimensional d...

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IEEE International Conference on Data Mining (ICDM)

作者： Cui Zhu H. Kitagawa C. Faloutsos Graduate School of Systems and Information Engineering University of Tsukuba Tsukuba Ibaraki Japan Center for Computational Sciences University of Tsukuba Tsukuba Ibaraki Japan School of Computer Science Carnegie Mellon Pittsburgh PA USA

Detecting outliers is an important problem. Most of its applications typically possess high dimensional datasets. In high dimensional space, the data becomes sparse which implies that every object can be regarded as an outlier from the point of view of similarity. Furthermore, a fundamental issue is that the notion of which objects are outliers typically varies between users, problem domains or, even, datasets. In this paper, we present a novel robust solution which detects high dimensional outliers based on user examples and tolerates incorrect inputs. It studies the behavior of projections of such a few examples, to discover further objects that are outstanding in the projection where many examples are outlying. Our experiments on both real and synthetic datasets demonstrate the ability of the proposed method to detect outliers corresponding to the user examples.

关键词： Robustness Object detection Clustering algorithms systems engineering and theory Computer science Application software Monitoring Design methodology Unsupervised learning Data mining

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Model-reduction by simultaneous determination of network topology and parameters: Application to modules in biochemical networks

Model-reduction by simultaneous determination of network top...

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05AIChE: 2005 AIChE Annual Meeting and Fall Showcase

作者： Maurya, Mano Ram Bornheimer, Scott J. Venkatasubramanian, Venkat Subramaniam, Shankar Laboratory for Bioinformatics and Computational Biology San Diego Supercomputer Center 9500 Oilman Dr San Diego CA 92093 United States Departments of Chemistry and Biochemistry and Cellular and Molecular Medicine 9500 Oilman Dr San Diego CA 92093 United States Department of Bioengineering University of California San Diego 9500 Oilman Dr San Diego CA 92093 United States Laboratory for Intelligent Process Systems School of Chemical Engineering Purdue University West Lafayette IN 47907 United States

Development and analysis of detailed quantitative models of biological systems is computationally prohibitive due to inherent complexity and nonlinearities. Even if a mathematical model can be developed, lack of large-scale good-quality data makes accurate estimation of a large number of parameters impossible. Hence, reduced-order models (ROMs) consisting of essential biochemical mechanisms are more suitable for computational analysis and for studying important systemic functions. In this paper, a mixed-integer nonlinear-optimization-based approach to model-reduction is presented in which, starting with a detailed biochemical model with concomitant computational details (reaction network and mathematical description), the structure and the parameters of a reduced-order model are determined simultaneously. A genetic-algorithm is used to solve the optimization problem. The methodology is demonstrated by developing a ROM for the GTPase cycle module of M1 muscarinic acetylcholine receptor, Gq, and regulator of G-protein signaling 4 (RGS4, a GTPase activating protein or GAP) starting from a detailed model of 48 reactions. The resulting ROM has only 14 reactions, and the ROM fits experimental data well and predicts 4 limiting signaling regimes corresponding to the extremes of receptor and GAP concentration. The method is about an order of magnitude faster than a previous method for reduced-order modeling that used a multiparametric variability analysis approach.

关键词： Living systems studies

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Discrete solitons and vortices on anisotropic lattices

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Physical Review E 2005年第4期72卷 046613-046613页

作者： P. G. Kevrekidis D. J. Frantzeskakis R. Carretero-González B. A. Malomed A. R. Bishop Department of Mathematics and Statistics University of Massachusetts Amherst Massachusetts 01003-4515 USA Department of Physics University of Athens Panepistimiopolis Zografos Athens 15784 Greece Nonlinear Dynamical Systems Group * Department of Mathematics and Statistics and Computational Science Research Center† San Diego State University San Diego California 92182-7720 USA Department of Interdisciplinary Studies School of Electrical Engineering Faculty of Engineering Tel Aviv University Tel Aviv 69978 Israel Theoretical Division and Center for Nonlinear Studies Los Alamos National Laboratory Los Alamos New Mexico 87545 USA

We consider the effects of anisotropy on solitons of various types in two-dimensional nonlinear lattices, using the discrete nonlinear Schrödinger equation as a paradigm model. For fundamental solitons, we develop a variational approximation that predicts that broad quasicontinuum solitons are unstable, while their strongly anisotropic counterparts are stable. By means of numerical methods, it is found that, in the general case, the fundamental solitons and simplest on-site-centered vortex solitons (“vortex crosses”) feature enhanced or reduced stability areas, depending on the strength of the anisotropy. More surprising is the effect of anisotropy on the so-called “super-symmetric” intersite-centered vortices (“vortex squares”), with the topological charge S equal to the square’s size M: we predict in an analytical form by means of the Lyapunov-Schmidt theory, and confirm by numerical results, that arbitrarily weak anisotropy results in dramatic changes in the stability and dynamics in comparison with the degenerate, in this case, isotropic, limit.

关键词： NONLINEAR SCHRODINGER-EQUATION BOSE-EINSTEIN CONDENSATE PHOTONIC LATTICES OPTICAL LATTICES LOCALIZED MODES DARK SOLITONS BREATHERS STABILITY ARRAYS THRESHOLDS

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Vector solitons with an embedded domain wall

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Physical Review E 2005年第6期72卷 066604-066604页

作者： P. G. Kevrekidis H. Susanto R. Carretero-González B. A. Malomed D. J. Frantzeskakis Department of Mathematics and Statistics University of Massachusetts Amherst Massachusetts 01003-4515 USA Department of Applied Mathematics University of Twente P.O. Box 217 7500 AE Enschede The Netherlands Nonlinear Dynamical Systems Group Department of Mathematics and Statistics and Computational Science Research Center San Diego State University San Diego California 92182-7720 USA Department of Interdisciplinary Studies Faculty of Engineering Tel Aviv University Tel Aviv 69978 Israel Department of Physics University of Athens Panepistimiopolis Zografos Athens 15784 Greece

We present a class of soliton solutions to a system of two coupled nonlinear Schrödinger equations, with an intrinsic domain wall (DW) which separates regions occupied by two different fields. The model describes a binary mixture of two Bose-Einstein condensates (BECs) with interspecies repulsion. For the attractive or repulsive interactions inside each species, we find solutions which are bright or dark solitons in each component, while for the opposite signs of the intraspecies interaction, a bright-dark soliton pair is found (each time, with the intrinsic DW). These solutions can arise in the context of discrete lattices, and most of them can be supported in continuum settings by an external parabolic trap. The stability of the solitons with intrinsic DWs is examined, and the evolution of unstable ones is analyzed. We also briefly discuss the possibility of generating such families of solutions in the presence of linear coupling between the components, and an application of the model to bimodal light propagation in nonlinear optics.

关键词： BOSE-EINSTEIN CONDENSATE COLLECTIVE EXCITATIONS FESHBACH RESONANCES ELASTIC-SCATTERING OPTICAL LATTICES BINARY-MIXTURES DARK SOLITONS MATTER-WAVES GASES DYNAMICS

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The Healthgrid White Paper 3

The Healthgrid White Paper

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3rd Annual Conference of the Healthgrid Association, Healthgrid 2005

作者： Breton, Vincent Dean, Kevin Solomonides, Tony Aloisio, Giovanni Benkner, Siegfried Bilofsky, Howard Blanquer, Ignacio Brady, Michael Cannataro, Mario Chouvarda, Ioanna Claerhout, Brecht De Moor, Georges De Neve, Wilfried De Wagter, Carlos Fiore, Sandro Hassan, Kinda Heeren, Germaine Hernández, Vicente Herveg, Jean A.M. Hofmann, Martin Jones, Chris Koutkias, Vassilios Lloyd, Sharon Lonsdale, Guy Alonso, Victoria L. Maglaveras, Nicos Maigne, Lydia Malousi, Andigoni Martín-Sánchez, Fernando McClatchey, Richard Medico, Enzo Miguet, Serge Mirto, Maria Montagnat, Johan Nørager1, Sofie Nozaki, Kazunori Oliveira, Ilídio Castro Pennec, Xavier Poullet, Yves Merino, Juan Pedro Sánchez Strizh, Irina G. Taillet, Michel Tristram, Clive Tverdokhlebov, Nikolay Veltri, Pierangelo Ziegler, René CNRS-IN2P3 LPC Campus des Cézeaux AubiereCedex63177 France Internet Business Solutions Group Cisco Systems 9 New Square Bedfont Lakes Middlesex FelthamTW14 8HA United Kingdom University of the West of England Bristol CEMS Coldharbour Lane BristolBS6 6TH United Kingdom Center for Advanced Computational Technologies ISUFI Dept. of Innovation Engineering University of Lecce Via per Monteroni Lecce73100 Italy Institute of Scientific Computing University of Vienna Nordbergstrasse 15 ViennaA-1090 Austria University of Pennsylvania School of Engineering and Applied Science Computer and Information Science Center for Bioinformatics 1416 Blockley Hall 423 Guardian Drive PhiladelphiaPA19104-6021 United States Universidad Politecnica de Valencia Camino de Vera/n Valencia46022 Spain FRS FREng Dept. of Engineering Science Oxford University Parks Road OxfordOX1 3PJ United Kingdom Magna Graecia University of Catanzaro School of Bioinformatics and Biomedical Engineering Campus di Germaneto Viale Europa Germaneto Catanzaro88100 Italy Aristotle University The Medical School Lab of Medical Informatics Box 323 Thessaloniki54124 Greece Custodix NV Verlorenbroodstraat 120 Bus 14 MerelbekeB-9820 Belgium Research in Advanced Medical Informatics and Telematics UZ Gent 5K3 De Pintelaan 185 GentB9000 Belgium Department of Radiotherapy Ghent University Hospital Building P7 De Pintelaan 185 GentB-9000 Belgium Laboratoire LIRIS Université Lumière Lyon 2 Campus Porte des Alpes 5 avenue Pierre Mendès France Bron69676 France av. E.Mounierlaan 83 Brussels1200 Belgium Faculté de Droit de Namur - FUNDP Centre de Recherches Informatiques & Droit 5 rempart de la Vierge Namur5000 Belgium Schloss Birlinghoven Sankt Augustin53754 Germany CERN Geneva 231211 Switzerland Oxford University Computing Laboratory Wolfson Building OxfordOX1 3QD United Kingdom C&C Research Laboratories NEC Europe Ltd. Rathausallee 10 Sankt AugustinD-53757 Germany Medic

ISBN: (纸本)158603510X

Over the last four years, a community of researchers working on Grid and High Performance Computing technologies started discussing the barriers and opportunities that grid technologies must face and exploit for the development of health-related applications. This interest lead to the first Healthgrid conference, held in Lyon, France, on January 16th–17th, 2003, with the focus of creating increased awareness about the possibilities and advantages linked to the deployment of grid technologies in health, ultimately targeting the creation of a European/international grid infrastructure for health. The topics of this conference converged with the position of the eHealth division of the European Commission, whose mandate from the Lisbon Meeting was "To develop an intelligent environment that enables ubiquitous management of citizens’ health status, and to assist health professionals in coping with some major challenges, risk management and the integration into clinical practice of advances in health knowledge." In this context "Health" involves not only clinical procedures but covers the whole range of information from molecular level (genetic and proteomic information) over cells and tissues, to the individual and finally the population level (social healthcare). Grid technology offers the opportunity to create a common working backbone for all different members of this large "health family" and will hopefully lead to an increased awareness and interoperability among disciplines. The first HealthGrid conference led to the creation of the Healthgrid association, a non-profit research association legally incorporated in France but formed from the broad community of European researchers and institutions sharing expertise in health grids. After the second Healthgrid conference, held in Clermont-Ferrand on January 29th–30th, 2004, the need for a "white paper" on the current status and prospective of health grids was raised. Over fifty experts from different areas of grid tec

关键词： Health risks

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The effect of wavelength advertisement on the performance of an optical routing protocol

The effect of wavelength advertisement on the performance of...

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GLOBECOM'04 - IEEE Global Telecommunications Conference

作者： Khan, Bilal Kleiner, Dardo D. Talmage, David Battou, Abdella Center for Computational Science Naval Research Laboratory Washington DC Advanced Engineering and Sciences ITT Industries Alexandria VA Comp. Intgn./Prog. Solutions Corp. MD Lambda Optical Systems Reston VA

This paper investigates the efficiency of wavelength selection in an optical network when it is conducted without knowledge of wavelength utilization, and compares it to the case when switches exchange wavelength availability through a routing protocol such as OSPF. We describe a series of experiments to determine the effect of wavelength advertisement on connection blocking probability in heterogeneous networks consisting of both wavelength converter and non-converter switches. Based on these experiments, we describe some consequences of advertising wavelength availability, and quantify when it is advantageous to advertise wavelength availability within the routing protocol. © 2004 IEEE.

关键词： Optical communication

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Mobile Agents: A Distributed Voice-Commanded Sensory and Robotic System for Surface EVA Assistance

Mobile Agents: A Distributed Voice-Commanded Sensory and Rob...

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engineering, Construction and Operations in Challenging Environments - Earth and Space 2004: Proceedings of the Ninth Biennial ASCE Aerospace Division International Conference

作者： Clancey, William J. Sierhuis, Maarten Alena, Rick Crawford, Sekou Dowding, John Graham, Jeff Kaskiris, Charis Tyree, Kim S. Van Hoof, Ronnie NASA/Ames Research Center Computational Science Division MS 269-3 Moffett Field CA 94035 United States Inst. for Hum. and Machine Cognition UWF Pensacola FL United States NASA Ames Research Center United States RIACS United States QSS United States Stanford University Department of Mechanical Engineering Stanford CA United States NASA Johnson Space Center Houston TX United States Titan Inc. University of California Sch. of Info. Management and Systems Berkeley CA United States

ISBN: (纸本)0784407223

For lunar and planetary operations, diverse components like spacesuit biosensors, global positioning system (GPS), and a robotic assistant were integrated in a model based distributed architecture system. The mobile agent, implemented in a system called Brahms, transmits data and assists communication between the extra-vehicular activity (EVA) astronauts, the crew in a local habitat and a remote mission support team. To make the operations safe and efficient and to help people and robotic systems coordinate their actions, the mobile agents interpret and transform the data. For the purpose, a state-of-the-art spoken dialogue interface was used with a speech driven navigation and scheduling tool, field observation record, and rover command system.

关键词： Planetary surface analysis

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Modeling and control of thermal microsystems 7th

Modeling and control of thermal microsystems

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7th International Symposium on Advanced Control of Chemical processes, ADCHEM 2003

作者： Lee, Yong Joon Sung, Su Whan Yoon, Dae Sung Lim, Geunbae Park, Sunwon Department of Chemical and Biomolecular Engineering Center for Ultramicrochemical Process Systems Korea Advanced Institute of Science and Technology 373-1 Gusung-dong Yusung-gu Daejon305-701 Korea Republic of Corporate R&D LG Chem. Ltd. Research Park 104-1. Moonji-dong Yusung-gu Daejon305-380 Korea Republic of Biochip Project Team and MEMS Lab Samsung Advanced Institute of Technology San 14 Nongseo-Ri Kiheung-Eup Yongin-City Kyunggi-Do449-712 Korea Republic of

A thermal microsystem is developed which consists of a microreactor integrated with a platinum sensor/heater, and automation equipment/software such as data acquisition system, control program and graphic user interface. From the control point of view, we analyze the dynamic characteristics of the fabricated microreactor and find some interesting dynamic features. On the basis of the analysis, we suggest an appropriate model structure and estimate the model parameters using the prediction error identification method. Requirements for a high-performance operation are discussed and a nonlinear control strategy is proposed to linearize the nonlinear dynamics of the thermal microsystem. We determine the parameters of the nonlinear controller using the optimal tuning method. The developed thermal microsystem shows much better control performances compared to commercial polymerase chain reaction (PCR) thermal cyclers. We successfully demonstrate the PCR of plasmid DNA using the thermal microsystem. Copyright © IFAC 2003

关键词： Polymerase chain reaction

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Future Directions in Sensors

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AIP Conference Proceedings 2004年第1期700卷 1611-1619页

作者： Vittal Rao John Barnes Bita Ghaffari R. Bruce Thompson 1Control Networks & Computational Intelligence Electrical and Communication Systems Division Engineering Directorate National Science Foundation Arlington VA 2Nondestructive Evaluation Branch Materials and Manufacturing Directorate Air Force Research Laboratory Wright‐Patterson Air Force Base Dayton OH 3Physical and Environmental Sciences Department Research and Advanced Engineering Ford Motor Company Dearborn MI 4Center for Nondestructive Evaluation Iowa State University Ames IA

There is a growing interest in applications of embedded and integrated sensors to ensure the reliability of structural components. The results of a panel discussion to elucidate future directions and key issues are presented. Views of three organizations, with different missions and objectives, on needs and opportunities are first presented, followed by a summary of general audience discussion. Emphasis is placed on identifying the commonalities and differences in those needs and opportunities.

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