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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2014年 8672卷 50-59页

作者： Fernandes, Carlos M. Laredo, Juan L J Merelo, Juan Julian Cotta, Carlos Nogueras, Rafael Rosa, Agostinho C. LaSEEB-ISR-IST University of Lisbon Portugal Department of Architecture and Computer Technology Univ. of Granada Spain Technology and Communications Univ. of Luxembourg Departamento de Lenguages y Ciencias de la Computación Univ. of Malaga Spain

This paper studies a self-organized framework for modeling dynamic topologies in spatially structured Evolutionary Algorithms (EAs). The model consists of a 2-dimensional grid of nodes where the individuals interact and self-organize into clusters. During the search process, the individuals move through the grid, following a pre-defined simple rule. In order to evaluate the model, a dynamic cellular Genetic Algorithm (dcGA) is built over the proposed topology and four different movement rules are tested. The results show that when the ratio between the number of nodes in the grid and the population size is above 4:1, the individuals self-organize into highly dynamic clusters and significantly improve results attained by standard cGAs with static topologies on a set of deceptive and multimodal functions. © Springer International Publishing Switzerland 2014.

关键词： Topology

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ReCBuLC: Reproducing Concurrency Bugs Using Local Clocks 15

ReCBuLC: Reproducing Concurrency Bugs Using Local Clocks

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International Conference on Software Engineering (ICSE)

作者： Xiang Yuan Chenggang Wu Zhenjiang Wang Jianjun Li Pen-Chung Yew Jeff Huang Xiaobing Feng Yanyan Lan Yunji Chen Yong Guan University of Chinese Academy of Sciences Beijing China State Key Laboratory of Computer Architecture Chinese Academy of Sciences Beijing China Department of Computer Science and Engineering University of Minnesota at Twin-Cities Minneapolis USA Department of Computer Science and Engineering Texas A&M University Texas USA CAS Key Laboratory of Network Data Science and Technology Chinese Academy of Sciences Beijing China College of Information Engineering Capital Normal University Beijing China

ISBN: (纸本)9781479919345

Multi-threaded programs play an increasingly important role in current multi-core environments. Exposing concurrency bugs and debugging such multi-threaded programs have become quite challenging due to their inherent non-determinism. In order to eliminate such non-determinism, many approaches such as record-and-replay and other similar bug reproducing systems have been proposed. However, those approaches often suffer significant performance degradation because they require a large amount of recorded information and/or long analysis and replay time. In this paper, we propose an effective approach, ReCBuLC, to take advantage of the hardware clocks available on modern processors. The key idea is to reduce the recording overhead and analyzing events' global order by using time stamps recorded in each thread. Those timestamps are used to determine the global orders of shared accesses. To avoid the large overhead incurred in accessing system-wide global clock, we opt to use local per-core clocks that incur much less access overhead. We then propose techniques to resolve differences among local clocks and obtain an accurate global event order. By using per-core clocks, state-of-the-art bug reproducing systems such as PRES and CLAP can reduce the recording overheads by 1% ~ 85%, and the analysis time by 84.66% ~ 99.99%, respectively.

关键词： Clocks Program processors computer bugs Hardware Coherence Concurrent computing Debugging

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KM3NeT front-end and readout electronics system: Hardware, firmware and software

arXiv

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arXiv 2019年

作者： Aiello, S. Ameli, F. Andre, M. Androulakis, G. Anghinolfi, M. Anton, G. Ardid, M. Aublin, J. Bagatelas, C. Barbarino, G. Baret, B. Basegmez Du Pree, S. Belias, A. Bendahman, M. Berbee, E. Van Den Berg, A.M. Bertin, V. Van Beveren, V. Biagi, S. Biagioni, A. Bissinger, M. Bos, P. Boumaaza, J. Bourret, S. Bouta, M. Bouvet, G. Bouwhuis, M. Bozza, C. Brânzaş, H. Briel, M.M. Bruchner, M. Bruijn, R. Brunner, J. Buis, E. Buompane, R. Busto, J. Calvo, D. Capone, A. Celli, S. Chabab, M. Chau, N. Cherubini, S. Chiarella, V. Chiarusi, T. Circella, M. Cocimano, R. Coelho, J.A.B. Coleiro, A. Colomer Molla, M. Coniglione, R. Coyle, P. Creusot, A. Cuttone, G. D'Amico, A. D'Onofrio, A. Dallier, R. De Palma, M. Di Palma, I. Díaz, A.F. Diego-Tortosa, D. Distefano, C. Domi, A. Donà, R. Donzaud, C. Dornic, D. Dörr, M. Durocher, M. Eberl, T. Van Eeden, T. El Bojaddaini, I. Eljarrari, H. Elsaesser, D. Enzenhöfer, A. Fermani, P. Ferrara, G. Filipović, M.D. Fusco, L.A. Gajanana, D. Gal, T. Garcia Soto, A. Garufi, F. Gialanella, L. Giorgio, E. Gozzini, S.R. Gracia, R. Graf, K. Grasso, D. Grégoire, T. Grella, G. Guderian, D. Guidi, C. Hallmann, S. Hamdaoui, H. Van Haren, H. Heijboer, A. Hekalo, A. Hernández-Rey, J.J. Hofestädt, J. Huang, F. Huesca Santiago, E. Illuminati, G. James, C.W. Jansweijer, P. Jongen, M. De Jong, M. De Jong, P. Kadler, M. Kalaczyński, P. Kalekin, O. Katz, U.F. Khan Chowdhury, N.R. Van Der Knaap, F. Koffeman, E.N. Kooijman, P. Kouchner, A. Kreter, M. Kulikovskiy, V. Lahmann, R. Larosa, G. Le Breton, R. Leone, F. Leonora, E. Levi, G. Lincetto, M. Lonardo, A. Longhitano, F. Lopez-Coto, D. Maggi, G. Mańczak, J. Mannheim, K. Margiotta, A. Marinelli, A. Markou, C. Martignac, G. Martin, L. Martínez-Mora, J.A. Martini, A. Marzaioli, F. Mazzou, S. Mele, R. Melis, K.W. Migliozzi, P. Migneco, E. Mijakowski, P. Miranda, L.S. Mollo, C.M. Morganti, M. Moser, M. Moussa, A. Muller, R. Musico, P. Musumeci, M. Nauta, L. Navas, S. INFN Sezione di Catania Via Santa Sofia 64 Catania95123 Italy INFN Sezione di Roma Piazzale Aldo Moro 2 Roma00185 Italy Universitat Politècnica de Catalunya Laboratori d'Aplicacions Bioacústiques Centre Tecnològic de Vilanova i la Geltrú Avda. Rambla Exposició s/n Vilanova i la Geltrú08800 Spain NCSR Demokritos Institute of Nuclear and Particle Physics Ag. Paraskevi Attikis Athens15310 Greece INFN Sezione di Genova Via Dodecaneso 33 Genova16146 Italy Friedrich-Alexander-Universität Erlangen-Nürnberg Erlangen Centre for Astroparticle Physics Erwin-Rommel-Straße 1 Erlangen91058 Germany Universitat Politècnica de València Instituto de Investigación para la Gestión Integrada de las Zonas Costeras C/ Paranimf 1 Gandia46730 Spain APC Université Paris Diderot CNRS/IN2P3 CEA/IRFU Observatoire de Paris Sorbonne Paris Cité Paris75205 France INFN Sezione di Napoli Complesso Universitario di Monte S. Angelo Via Cintia ed. G Napoli80126 Italy Università di Napoli "Federico II" Dip. Scienze Fisiche "E. Pancini" Complesso Universitario di Monte S. Angelo Via Cintia ed. G Napoli80126 Italy Nikhef National Institute for Subatomic Physics PO Box 41882 Amsterdam1009 DB Netherlands University Mohammed V in Rabat Faculty of Sciences 4 av. Ibn Battouta B.P. 1014 R.P Rabat10000 Morocco KVI-CART University of Groningen Groningen Netherlands Aix Marseille Univ CNRS/IN2P3 CPPM Marseille France INFN Laboratori Nazionali del Sud Via S. Sofia 62 Catania95123 Italy University Mohammed I Faculty of Sciences BV Mohammed VI B.P. 717 R.P Oujda60000 Morocco Subatech IMT Atlantique IN2P3-CNRS Université de Nantes 4 rue Alfred Kastler - La Chantrerie NantesBP20722 44307 France Università di Salerno INFN Gruppo Collegato di Salerno Dipartimento di Fisica Via Giovanni Paolo II 132 Fisciano84084 Italy ISS Atomistilor 409 MagureleRO-077125 Romania University of Amsterdam Institute of Physics/IHEF PO Box 94216 Amsterdam1090 GE Netherlands TNO T

The KM3NeT research infrastructure being built at the bottom of the Mediterranean Sea will host water-Cherenkov telescopes for the detection of cosmic neutrinos. The neutrino telescopes will consist of large volume three-dimensional grids of optical modules to detect the Cherenkov light from charged particles produced by neutrino-induced interactions. Each optical module houses 31 3-inch photomultiplier tubes, instrumentation for calibration of the photomultiplier signal and positioning of the optical module and all associated electronics boards. By design, the total electrical power consumption of an optical module has been capped at seven watts. This paper presents an overview of the front-end and readout electronics system inside the optical module, which has been designed for a 1 ns synchronization between the clocks of all optical modules in the grid during a life time of at least 20 years. Copyright © 2019, The Authors. All rights reserved.

关键词： Charged particles

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26th Annual Computational Neuroscience Meeting (CNS*2017): Part 1

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BMC Neurosci 2017年第SUPPL 1期18卷 58-58页

作者： Sue Denham Panayiota Poirazi Erik De Schutter Karl Friston Ho Ka Chan Thomas Nowotny Dongqi Han Sungho Hong Sophie Rosay Tanja Wernle Alessandro Treves Sarah Goethals Romain Brette Tomas Van Pottelbergh Rodolphe Sepulchre Alex D. Bird Hermann Cuntz Pedro J. Gonçalves Jan-Matthis Lueckmann Giacomo Bassetto Marcel Nonnenmacher Jakob H. Macke Audrey J. Sederberg Jason N. MacLean Stephanie E. Palmer Ulisse Ferrari Christophe Gardella Olivier Marre Thierry Mora Emina Ibrahimovic Martin Müller Jean-Pascal Pfister Tushar Chauhan Timothée Masquelier Alexandre Montlibert Benoit R. Cottereau Moritz Helias Jannis Schuecker David Dahmen Sven Goedeke Alexandre Hyafil Ainhoa Hermoso-Mendizabal Pavel E. Rueda-Orozco Santiago Jaramillo David Robbe Jaime de la Rocha Marie Rooy Fani Koukouli David DiGregorio Uwe Maskos Boris Gutkin Andrey Yu Verisokin Darya V. Verveyko Dmitry E. Postnov Willy Wong Omid Talakoub Robert Chen Milos Popovic Dmitriy Lisitsyn Eric Drebitz Iris Grothe Sunita Mandon Andreas Kreiter Udo Ernst Peter A. Robinson Xuelong Zhao Kevin M. Aquino John D. Griffiths Grishma Mehta-Pandejee Natasha Gabay James MacLaurin Somwrita Sarkar Tim Kunze Jens Haueisen Thomas R. Knösche Subutai Ahmad Yuwei Cui Marcus Lewis Jeff Hawkins Simona Olmi Spase Petkoski Fabrice Bartolomei Maxime Guye Viktor Jirsa Hazem Toutounji Daniel Durstewitz Matteo Cantarelli Adrian Quintana Boris Marin Matt Earnshaw Padraig Gleeson Robert Court Robert McDougal R. Angus Silver Salvador Dura-Bernal Stephen Larson William W. Lytton Giovanni Idili Lorenzo Posani Simona Cocco Karel Ježek Rémi Monasson School of Psychology Faculty of Health & Human Sciences Plymouth University Plymouth Devon PL4 8AA UK Institute of Molecular Biology and Biotechnology (IMBB) Foundation for Research and Technology-Hellas (FORTH) Heraklion Crete Greece Okinawa Institute of Science and Technology Graduate University Okinawa Japan Wellcome Trust Centre for Neuroimaging Institute of Neurology UCL London WC1N 3BG UK School of Engineering and Informatics University of Sussex Brighton BN1 9QJ UK Graduate School Okinawa Institute of Science and Technology Okinawa 904-0495 Japan Computational Neuroscience Unit Okinawa Institute of Science and Technology Okinawa 904-0495 Japan Cognitive Neuroscience Area Scuola Internazionale Superiore di Studi Avanzati Trieste 34136 Italy Kavli Institute for Systems Neuroscience NTNU Trondheim 7030 Norway Institut de la Vision Sorbonne Universités UPMC Univ Paris 06 INSERM CNRS Paris 75012 France Department of Engineering University of Cambridge Cambridge Cambridgeshire CB2 1PZ UK Ernst Strüngmann Institute for Neuroscience Max Planck Society Frankfurt Germany Frankfurt Institute for Advanced Studies Frankfurt Germany Neural Systems Analysis Research Center Caesar An Associate of the Max Planck Society Bonn Germany Max Planck Institute for Biological Cybernetics Tübingen Germany Bernstein Center for Computational Neuroscience Tübingen Germany Present Address: Biomedical Engineering Department Georgia Institute of Technology Atlanta GA 30306 USA Department of Neurobiology University of Chicago Chicago IL 60637 USA Department of Organismal Biology and Anatomy University of Chicago Chicago IL 60637 USA Committee on Computational Neuroscience University of Chicago Chicago IL 60637 USA Institut de la Vision Sorbonne Universités INSERM Paris France Laboratoire de Physique Statistique Ecole Normale Supérieure Paris France Institute of Molecular Life Sciences University of Zürich 8057 Zürich Switzerland Institute of Neuroinformatics Univer

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The creep properties of fine sandstone under uniaxial tensile stress

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Journal of Engineering Science and technology Review 2015年第3期8卷 136-142页

作者： Haifei, Jiang Yuanguang, Xie Baoyun, Zhao Kaixi, Xue International College Chongqing Jiaotong University Chongqing400074 China School of Civil Engineering and Architecture Chongqing Universityof Science and Technology Chongqing401331 China Civil and Environmental Engineering Department College of Engineering and Computer Science California State University 800 N. State College Blvd FullertonCA92834 United States

A graduated uniaxial direct tensile creep test for fine sandstone is conducted by adopting a custom-designed direct tensile test device for rock. The experiment shows that the tensile creep of fine sandstone has similar creep curve patterns to those of compression creep, while the ratios of the creep strain to the total strain obtained in the tensile tests are substantially higher than those obtained for similar compression tests, which indicates that the creep ability of rock in the tensile process is higher than that in the uniaxial compression process. Based on the elastic modulus in the approximately linear portion of the obtained isochronous stress-strain curves of the tensile creep, the time dependence of the elasticity modulus for the Kelvin model is evaluated, and a revised generalized Kelvin model is obtained by substitution into the generalized Kelvin model. A new viscousplastic model is proposed to describe the accelerated creep properties, and this model is combined in series with the revised generalized Kelvin model to form a new nonlinear viscoelastic-plastic creep model that can describe the properties of attenuation creep, steady creep, and accelerated creep. Comparison of the test and theoretical curves demonstrates that they are nearly identical, which verifies the performance of the model. © 2015 Kavala Institute of technology.

关键词： Creep

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Deploying clouds in the Guifi community network

Deploying clouds in the Guifi community network

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IFIP/IEEE International Symposium on Integrated Network Management

作者： Roger Baig Jim Dowling Pau Escrich Felix Freitag Roc Meseguer Agusti Moll Leandro Navarro Ermanno Pietrosemoli Roger Pueyo Vladimir Vlassov Marco Zennaro Oberta i Neural *** Fundació Privada per la Xarxa Lliure Mas l'Esperana Gurb The Swedish Institute of Computer Science (SICS) Stockholm Sweden Department of Computer Architecture Universitat Politècnica de Catalunya Barcelona Spain The Abdus Salam International Centre for Theoretical Physics (ICTP) Trieste Italy KTH Royal Institute of Technology Stockholm Sweden

ISBN: (纸本)9781479982424

This paper describes an operational geographically distributed and heterogeneous cloud infrastructure with services and applications deployed in the Guifi community network. The presented cloud is a particular case of a community cloud, developed according to the specific needs and conditions of community networks. We describe the concept of this community cloud, explain our technical choices for building it, and our experience with the deployment of this cloud. We review our solutions and experience on offering the different service models of cloud computing (IaaS, PaaS and SaaS) in community networks. The deployed cloud infrastructure aims to provide stable and attractive cloud services in order to encourage community network user to use, keep and extend it with new services and applications.

关键词： Communities Clouds Hardware Cloud computing Virtual machining Servers

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The cloudy distribution in community network clouds in ***

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IFIP/IEEE International Symposium on Integrated Network Management

作者： Roger Baig Rodrigo Carbajales Pau Escrich Jorge Florit Felix Freitag Agusti Moll Leandro Navarro Ermanno Pietrosemoli Roger Pueyo Mennan Selimi Vladimir Vlassov Marco Zennaro Fundació Privada per la Xarxa Lliure Oberta i Neural *** Gurb Catalonia Abdus Salam International Centre for Theoretical Physics (ICTP) Trieste Italy Department of Computer Architecture Universitat Politècnica de Catalunya Barcelona Spain KTH Royal Institute of Technology Stockholm Sweden

This demo paper presents Cloudy, a Debian-based distribution to build and deploy clouds in community networks. The demonstration covers the following aspects: Installation of Cloudy, the Cloudy GUI for usage and admin... 详细信息

ISBN: (纸本)9781479982424

关键词： Clouds Communities Cloud computing Graphical user interfaces Peer-to-peer computing computer architecture

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Experiences in Building Micro-cloud Provider Federation in the Guifi Community Network 15

Experiences in Building Micro-cloud Provider Federation in t...

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IEEE International Conference on Utility and Cloud Computing (UCC)

作者： Roger Baig Felix Freitag Agusti Moll Leandro Navarro Roger Pueyo Vladimir Vlassov Fundació Privada per la Xarxa Lliure Oberta i Neural ***. Mas l'Esperanca Gurb Catalonia Department of Computer Architecture Universitat Politécnica de Catalunya Barcelona Spain Routek S.L. Barcelona Catalonia KTH Royal Institute of Technology Stockholm Sweden

ISBN: (纸本)9780769556970

Cloud federation is foreseen to happen among large cloud providers. The resulting interoperability of cloud services among these providers will then increase even more the elasticity of cloud services. The cloud provisioned that is targeted by this scenario is mainly one which combines the cloud services offered by large enterprises. Cloud computing, however, has started moving to the edge. We now increasingly see the tendency to fullfil cloud computing requirements by multiple levels and different kind of infrastructures, where the Fog Computing paradigm has started playing its role. For this scenario of edge computing, we show in this paper the case of the federation of multiple independent micro-cloud providers within a community network, where providers pool their resources and services into a community cloud. Federation happens here primarily at the service level and the domain of trust is the community of practice. While we can today already report this case in the context of community networks, IPv6 deployment in the Internet will principally allow micro-cloud providers to appear everywhere, needing cloud federation mechanisms. We describe for a real case how this micro-cloud provider federation has been built and argue why micro-cloud provider should be considered for the integration in cloud federations.

关键词： Cloud computing Peer-to-peer computing Hardware IP networks Interoperability computer numerical control

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Knowledge-Based Decision System for Sizing Grid-Connected Photovoltaic Arrays

Knowledge-Based Decision System for Sizing Grid-Connected Ph...

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7th International Conference on Intelligent Systems and Knowledge Engineering, ISKE 2012

作者： Mikati, Monir Santos, Matilde ÅF Technology Lindholmspiren 9 41756 Gothenburg Sweden Department of Computer Architecture and Automatic Control Universidad Complutense de Madrid 28040 Madrid Spain

In this paper we have developed a methodology and a numerical model for sizing photovoltaic (PV) arrays for grid-connected power consumers. The decision variables proposed are the PV contribution to the power demand and a transfer factor. The latter is a new index that we have defined, and it constitutes key knowledge for decision making when aiming to reduce power transfers between a local power system and the electric grid. The developed model generates days of solar irradiance and calculates PV power output for commercial PV modules. Sizing diagrams are presented that illustrate how the PV capacity, for a specific location and a local power demand, affects the PV contribution to the demand and the power trades with grid. For the particular simulation conditions studied, the sizing diagrams show PV contribution saturation levels and global transfer factor minimums. © Springer-Verlag Berlin Heidelberg 2014.

关键词： Solar energy

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LEt's GO! Workshop creativity with mockups of locations 2

LEt's GO! Workshop creativity with mockups of locations

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2nd European Workshop on Practical Aspects of Health Informatics, PAHI 2014

作者： Iversen, Tobias Buschmann Landmark, Andreas Dypvik Norwegian University of Science and Technology Department of Computer and Information Science Norwegian EHR Center Trondheim Norway Helse-Vest IKT Department of Innovation and Architecture Haugesund Norway SINTEF Technology and Society Department of Industrial Management Trondheim Norway

Brainstorming and discussions with users about their situated needs is difficult with nomadic users as the situation and location setting in the discussion is often lost in traditional workshops in meeting rooms. In many fields, conducting them in situ is difficult for both ethical and practical reasons, such as in a hospital. To mitigate this, a combination of methods is often necessary to ensure sufficient detail in the collected data. In this paper we will show the use of inexpensive children's building blocks as a tool for creating simple discussion support for brainstorming workshops. We summarize some experiences from a workshop using this combined method. Copyright © 2014 by the paper's authors. Copying permitted for private and academic purposes.

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