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Thermal management in three dimensional networkonchip using bioinspired liquid channel placement 49

Thermal management in three dimensional networkonchip using ...

49th Summer computer Simulation Conference, SCSC 2017, Part of the 2017 Summer Simulation Multi-Conference, SummerSim 2017

作者： Dash, Ranjita K. Majumdar, Amartya Turuk, Ashok K. Risco-Martín, José L. Ayala, José L. Pangracious, Vinod Dept. of Computer Science and Engineering National Institute of Technology Rourkela India Dept. of Computer Architecture and Automatics Complutense University of Madrid Madrid Spain Dept. of Electrical and Computer Engineering American University of Dubai Dubai United Arab Emirates

ISBN: (纸本)9781510838284

Three-dimensional Network-on-Chip systems are becoming popular because of reduced communication delay, heterogeneous integration of different technologies in a single chip, high yield, reduced latency, and less consumption of interconnect power. However, the addition of functional units in the Z-direction has resulted in higher on-chip temperature and appearance of hot spots on the die. Liquid channel cooling has emerged as an efficient and scalable solution for 3-D NoC. This paper proposed a placement strategy of liquid micro-channels in the chip using the genetic algorithm. The proposed liquid cooling approach is independent of any topology. By performing an extensive set of experiments, the result shows a substantial decrease in peak on-chip temperature. © 2017 Society for Modeling & Simulation International (SCS).

关键词： Network-on-chip

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Ultra-accurate Ethernet Time-Transfer with programmable carrier-frequency based on White Rabbit solution

Ultra-accurate Ethernet Time-Transfer with programmable carr...

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IEEE International Symposium on Precision Clock Synchronization for Measurement, Control and Communication

作者： Francisco Girela-Lopez Felipe Torres-Gonzalez Javier Diaz Dept. Computer Architecture and Technology UGR Granada Spain

Synchronization has become a main concern in communication and control systems during the last years. Although there are several standard mechanisms to accomplish timing requirements, development and improvement of high synchronization technologies is required to obtain better performance and quality of service. In this context, the enhanced version of IEEE 1588v2 synchronization protocol, known as White Rabbit (WR), was created to provide sub-nanosecond accuracy and a precision of few picoseconds over Ethernet optical fiber networks. However, the deployment on different distribution scenarios like Telecoms, Smart Grids or Finances makes mandatory to research the flexibility and the adaptability of this synchronization protocol. According to industry requirements, some of the future investigation lines in this field are bandwidth management and wireless deployment, maintaining the stability and the accuracy [1]. Both tasks highly depend on the system carrier-frequency, which impacts on the bandwidth and makes this solution suitable for a target scenario. In this contribution we modify the Ethernet physical layer to develop a fully programmable Ethernet reference carrier frequency. After that, we evaluate the influence of the frequency range and how it affects the clock synchronization accuracy results, obtaining the jitter results for the WR-core under different system frequencies. The study is developed on the Light Embedded Node (WR-LEN). Its firmware has been modified according to the clocking circuitry of these boards and it allows to test the WR performance over a large range of frequencies, which could be used in future applications.

关键词： Synchronization Time and frequency distribution White Rabbit technology PTP Multifrequency

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Fault adaptive routing in metasurface controller networks

arXiv

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arXiv 2018年

作者： Saeed, Taqwa Skitsas, Constantinos Kouzapas, Dimitrios Lestas, Marios Soteriou, Vassos Philippou, Anna Abadal, Sergi Liaskos, Christos Petrou, Loukas Georgiou, Julius Pitsillides, Andreas Department of Electrical Engineering Frederick University Cyprus Nicosia Cyprus Department of Computer Science University of Cyprus Nicosia Cyprus Dept. of Electrical Eng. Computer Eng. and Informatics Cyprus University of Technology Limassol Cyprus Department of Computer Architecture Universitat Politècnica de Catalunya Barcelona Spain Institute of Computer Science Foundation of Research and Technology Hellas Heraklion Greece Department of Electrical and Computer Engineering University of Cyprus Nicosia Cyprus

HyperSurfaces are a merge of structurally reconfigurable metasurfaces whose electromagnetic properties can be changed via a software interface, using an embedded miniaturized network of controllers, thus enabling novel capabilities in wireless communications. Resource constraints associated with the development of a hardware testbed of this breakthrough technology necessitate network controller architectures different from traditional regular Network-on-Chip architectures. The Manhattan-like topology chosen to realize the controller network in the testbed under development is irregular, with restricted local path selection options, operating in an asynchronous fashion. These characteristics render traditional fault-tolerant routing mechanisms inadequate. In this paper, we present work in progress towards the development of fault-tolerant routing mechanisms for the chosen architecture. We present two XY-based approaches which have been developed aiming to offer reliable data delivery in the presence of faults. The first approach aims to avoid loops while the second one attempts to maximize the success delivery probabilities. Their effectiveness is demonstrated via simulations conducted on a custom developed simulator. Copyright © 2018, The Authors. All rights reserved.

关键词： Network routing

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Fault Adaptive Routing in Metasurface Controller Networks

Fault Adaptive Routing in Metasurface Controller Networks

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International Workshop on Network on Chip architectures, NoCArc

作者： Taqwa Saeed Constantinos Skitsas Dimitrios Kouzapas Marios Lestas Vassos Soteriou Anna Philippou Sergi Abadal Christos Liaskos Loukas Petrou Julius Georgiou Andreas Pitsillides Department of Computer Science University of Cyprus Nicosia Cyprus Department of Electrical Engineering Frederick University Cyprus Nicosia Cyprus Dept. of Electrical Eng. Computer Eng. and Informatics Cyprus University of Technology Limassol Cyprus Department of Computer Architecture Universitat Politècnica de Catalunya Barcelona Spain Institute of Computer Science Foundation of Research and Technology Hellas Heraklion Greece Department of Electrical and Computer Engineering University of Cyprus Nicosia Cyprus

关键词： Routing Topology System recovery Pins Network topology Logic gates Fault tolerance

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Follow-up of O3 gravitational wave events with neutrinos in ANTARES and KM3NeT telescopes 38

Follow-up of O3 gravitational wave events with neutrinos in ...

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38th International Cosmic Ray Conference, ICRC 2023

作者： Lamoureux, Mathieu Dornic, Damien Le Stum, Sébastien Vannoye, Godefroy de Wasseige, Gwenhaël Albert, A. Alves, S. André, M. Ardid, M. Ardid, S. Aubert, J.-J. Aublin, J. Baret, B. Basa, S. Becherini, Y. Belhorma, B. Bendahman, M. Benfenati, F. Bertin, V. Biagi, S. Bissinger, M. Boumaaza, J. Bouta, M. Bouwhuis, M.C. Brânzas, H. Bruijn, R. Brunner, J. Busto, J. Caiffi, B. Calvo, D. Campion, S. Capone, A. Caramete, L. Carenini, F. Carr, J. Carretero, V. Cartraud, T. Celli, S. Cerisy, L. Chabab, M. Cherkaoui El Moursli, R. Chiarusi, T. Circella, M. Coelho, J.A.B. Coleiro, A. Coniglione, R. Coyle, P. Creusot, A. Cruz, A.S.M. Díaz, A.F. De Martino, B. Distefano, C. Di Palma, I. Domi, A. Donzaud, C. Dornic, D. Drouhin, D. Eberl, T. van Eeden, T. van Eijk, D. El Hedri, S. El Khayati, N. Enzenhöfer, A. Fermani, P. Ferrara, G. Filippini, F. Fusco, L. Gagliardini, S. García, J. Gatius Oliver, C. Gay, P. Geißelbrecht, N. Glotin, H. Gozzini, R. Gracia Ruiz, R. Graf, K. Guidi, C. Haegel, L. Hallmann, S. van Haren, H. Heijboer, A.J. Hello, Y. Hernández-Rey, J.J. Hößl, J. Hofestädt, J. Huang, F. Illuminati, G. James, C.W. Jisse-Jung, B. de Jong, M. de Jong, P. Kadler, M. Kalekin, O. Katz, U. Kouchner, A. Kreykenbohm, I. Kulikovskiy, V. Lahmann, R. Lamoureux, M. Lazo, A. Lefèvre, D. Leonora, E. Levi, G. Le Stum, S. Loucatos, S. Maderer, L. Manczak, J. Marcelin, M. Margiotta, A. Marinelli, A. Martínez-Mora, J.A. Migliozzi, P. Moussa, A. Muller, R. Navas, S. Nezri, E. Fearraigh, B.Ó. Oukacha, E. Paun, A. Pavalas, G.E. Peña-Martínez, S. Perrin-Terrin, M. Pestel, V. Piattelli, P. Poirè, C. Popa, V. Pradier, T. Randazzo, N. Real, D. Reck, S. Riccobene, G. Romanov, A. Sánchez-Losa, A. Saina, A. Salesa Greus, F. Samtleben, D.F.E. Sanguineti, M. Sapienza, P. Schnabel, J. Schumann, J. Schüssler, F. Seneca, J. Spurio, M. Stolarczyk, Th. Taiuti, M. Tayalati, Y. Tingay, S.J. Vallage, B. Vannoye, G. Van Elewyck, V. Viola, S. Vivolo, D. Centre for Cosmology Particle Physics and Phenomenology - CP3 Université Catholique de Louvain Louvain-la-NeuveB-1348 Belgium Université Paris Cité CNRS Astroparticule et Cosmologie ParisF-75013 France Aix Marseille Univ CNRS IN2P3 CPPM Marseille France Université de Strasbourg CNRS IPHC UMR 7178 StrasbourgF-67000 France Université de Haute Alsace MulhouseF-68100 France IFIC - Instituto de Física Corpuscular CSIC Universitat de València c/ Catedrático José Beltrán Paterna Valencia2 E-46980 Spain Technical University of Catalonia Laboratory of Applied Bioacoustics Rambla Exposició Vilanova i la Geltrú Barcelona08800 Spain Universitat Politècnica de València C/ Paranimf 1 Gandia46730 Spain Aix Marseille Univ CNRS CNES LAM Marseille France National Center for Energy Sciences and Nuclear Techniques B.P.1382 RabatR.P.10001 Morocco University Mohammed V in Rabat Faculty of Sciences 4 av. Ibn Battouta B.P. 1014 RabatR.P. 10000 Morocco INFN - Sezione di Bologna Viale Berti-Pichat 6/2 Bologna40127 Italy Dipartimento di Fisica e Astronomia dell’Università di Bologna Viale Berti-Pichat 6/2 Bologna40127 Italy Via S. Sofia 62 Catania95123 Italy Friedrich-Alexander-Universität Erlangen-Nürnberg Erlangen Centre for Astroparticle Physics Erwin-Rommel-Str. 1 Erlangen91058 Germany University Mohammed I Laboratory of Physics of Matter and Radiations B.P.717 Oujda6000 Morocco Nikhef Science Park Amsterdam Netherlands Institute of Space Science Bucharest MagureleRO-077125 Romania Universiteit van Amsterdam Instituut voor Hoge-Energie Fysica Science Park 105 Amsterdam1098 XG Netherlands INFN - Sezione di Genova Via Dodecaneso 33 Genova16146 Italy INFN - Sezione di Roma P.le Aldo Moro 2 Roma00185 Italy Dipartimento di Fisica dell’Università La Sapienza P.le Aldo Moro 2 Roma00185 Italy LPHEA Faculty of Science - Semlali Cadi Ayyad University MarrakechP.O.B. 2390 Morocco INFN Sezione di Bari Via E. Orabona 4 Bari70126 Italy I

Astrophysical neutrinos may be produced during the coalescence of compact objects, in particular those involving neutron stars. Such mergers have been identified through gravitational wave detections by the LIGO and Virgo collaborations and reported in published catalogs. The ANTARES and KM3NeT deep-sea neutrino telescopes are sensitive to neutrino interactions in a wide range of energies, from MeV to PeV. The under-construction KM3NeT telescope covers this energy range with two detectors: ORCA for neutrinos below the TeV and ARCA for TeV–PeV, extending the capabilities of the now-decommissioned ANTARES telescope. This contribution presents the search for neutrinos in time and space correlation with the gravitational wave signals reported during the Third Observing Run of LIGO/Virgo. The ANTARES analysis uses track-like and shower-like events originating from high-energy neutrino interactions. It focuses on a ±500-second time window centered on the time of the merger given by the gravitational wave signal. Two KM3NeT studies are carried out using the data from the partial KM3NeT/ORCA detector: a search for upgoing tracks induced by GeV-TeV neutrinos in the same window as above;and a search for a MeV neutrino signal in a shorter 2-second time window. The results are provided in terms of upper limits on the incoming neutrino flux in the various energy ranges and the total isotropic energies emitted in neutrinos. High-energy observations are also stacked to probe the typical neutrino emission from different populations of mergers. The complementarity of ANTARES and KM3NeT results is also explored. © Copyright owned by the author(s) under the terms of the Creative Commons.

关键词： Telescopes

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Search for Spatial Correlations of Neutrinos with Ultra-High-Energy Cosmic Rays

arXiv

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arXiv 2022年

作者： Albert, A. Alves, S. André, M. Anghinolfi, M. Ardid, M. Ardid, S. Aubert, J.-J. Aublin, J. Baret, B. Basa, S. Belhorma, B. Bendahman, M. Bertin, V. Biagi, S. Bissinger, M. Boumaaza, J. Bouta, M. Bouwhuis, M.C. Brânzaş, H. Bruijn, R. Brunner, J. Busto, J. Caiffi, B. Calvo, D. Capone, A. Caramete, L. Carr, J. Carretero, V. Celli, S. Chabab, M. Chau, T.N. El Moursli, R. Cherkaoui Chiarusi, T. Circella, M. Coleiro, A. Coniglione, R. Coyle, P. Creusot, A. Díaz, A.F. Distefano, C. Di Palma, I. Domi, A. Donzaud, C. Dornic, D. Drouhin, D. Eberl, T. van Eeden, T. van Eijk, D. El Khayati, N. Enzenhöfer, A. Fermani, P. Ferrara, G. Filippini, F. Fusco, L. Gatelet, Y. Gay, P. Glotin, H. Gozzini, R. Ruiz, R. Gracia Graf, K. Guidi, C. Hallmann, S. van Haren, H. Heijboer, A.J. Hello, Y. Hernández-Rey, J.J. Hößl, J. Hofestädt, J. Huang, F. Illuminati, G. James, C.W. Jisse-Jung, B. de Jong, M. de Jong, P. Kadler, M. Kalekin, O. Katz, U. Khan-Chowdhury, N.R. Kouchner, A. Kreykenbohm, I. Kulikovskiy, V. Lahmann, R. Le Breton, R. LeStum, S. Lefèvre, D. Leonora, E. Levi, G. Lopez-Coto, D. Loucatos, S. Maderer, L. Manczak, J. Marcelin, M. Margiotta, A. Marinelli, A. Martínez-Mora, J.A. Martino, B. Melis, K. Migliozzi, P. Moussa, A. Muller, R. Nauta, L. Navas, S. Nezri, E. Fearraigh, B.Ó. Păun, A. Păvălaş, G.E. Pellegrino, C. Perrin-Terrin, M. Pestel, V. Piattelli, P. Pieterse, C. Poirè, C. Popa, V. Pradier, T. Randazzo, N. Real, D. Reck, S. Riccobene, G. Romanov, A. Sánchez-Losa, A. Greus, F. Salesa Samtleben, D.F.E. Sanguineti, M. Sapienza, P. Schnabel, J. Schumann, J. Schüssler, F. Seneca, J. Spurio, M. Stolarczyk, Th. Taiuti, M. Tayalati, Y. Tingay, S.J. Vallage, B. Van Elewyck, V. Versari, F. Viola, S. Vivolo, D. Wilms, J. Zavatarelli, S. Zegarelli, A. Zornoza, J.D. Zúñiga, J. Abbasi, R. Ackermann, M. Adams, J. Aguilar, J.A. Ahlers, M. Ahrens, M. Alameddine, J.M. Alispach, C. Alves, A.A. Amin, N.M. Université de Strasbourg CNRS IPHC UMR 7178 StrasbourgF-67000 France Université de Haute Alsace MulhouseF-68100 France IFIC - Instituto de Física Corpuscular CSIC Universitat de València c/Catedrático José Beltrán Valencia Paterna2 E-46980 Spain Technical University of Catalonia Laboratory of Applied Bioacoustics Rambla Exposició Vilanova i la Geltrú Barcelona08800 Spain INFN - Sezione di Genova Via Dodecaneso 33 Genova16146 Italy Universitat Politècnica de València C/Paranimf 1 Gandia46730 Spain Aix Marseille Univ CNRS IN2P3 CPPM Marseille France Université de Paris CNRS Astroparticule et Cosmologie ParisF-75013 France Aix Marseille Univ CNRS CNES LAM Marseille France National Center for Energy Sciences and Nuclear Techniques B.P.1382 RabatR. P.10001 Morocco University Mohammed V in Rabat Faculty of Sciences 4 av. Ibn Battouta B.P. 1014 RabatR.P. 10000 Morocco Via S. Sofia 62 Catania95123 Italy Friedrich-Alexander-Universität Erlangen-Nürnberg Erlangen Centre for Astroparticle Physics Erwin-Rommel-Str. 1 Erlangen91058 Germany University Mohammed I Laboratory of Physics of Matter and Radiations B.P.717 Oujda6000 Morocco Nikhef Science Park Amsterdam Netherlands Institute of Space Science Măgurele BucharestRO-077125 Romania Universiteit van Amsterdam Instituut voor Hoge-Energie Fysica Science Park 105 Amsterdam1098 XG Netherlands INFN - Sezione di Roma P.le Aldo Moro 2 Roma00185 Italy Dipartimento di Fisica dell'Università La Sapienza P.le Aldo Moro 2 Roma00185 Italy LPHEA Faculty of Science - Semlali Cadi Ayyad University MarrakechP.O.B. 2390 Morocco INFN - Sezione di Bologna Viale Berti-Pichat 6/2 Bologna40127 Italy INFN - Sezione di Bari Via E. Orabona 4 Bari70126 Italy Department of Computer Architecture and Technology CITIC University of Granada Granada18071 Spain Université Paris-Sud Orsay Cedex91405 France Dipartimento di Fisica e Astronomia dell'Università Viale Berti Pichat 6/2 Bologna40127

For several decades, the origin of ultra-high-energy cosmic rays (UHECRs) has been an unsolved question of high-energy astrophysics. One approach for solving this puzzle is to correlate UHECRs with high-energy neutrinos, since neutrinos are a direct probe of hadronic interactions of cosmic rays and are not deflected by magnetic fields. In this paper, we present three different approaches for correlating the arrival directions of neutrinos with the arrival directions of UHECRs. The neutrino data is provided by the IceCube Neutrino Observatory and ANTARES, while the UHECR data with energies above ∼50 EeV is provided by the Pierre Auger Observatory and the Telescope Array. All experiments provide increased statistics and improved reconstructions with respect to our previous results reported in 2015. The first analysis uses a high-statistics neutrino sample optimized for point-source searches to search for excesses of neutrinos clustering in the vicinity of UHECR directions. The second analysis searches for an excess of UHECRs in the direction of the highest-energy neutrinos. The third analysis searches for an excess of pairs of UHECRs and highest-energy neutrinos on different angular scales. None of the analyses has found a significant excess, and previously reported over-fluctuations are reduced in significance. Based on these results, we further constrain the neutrino flux spatially correlated with UHECRs. © 2022, CC BY.

关键词： Cosmic rays

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Software Quality Concerns in the Italian Bank Sector: The Emergence of a Meta-Quality Dimension

Software Quality Concerns in the Italian Bank Sector: The Em...

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IEEE/ACM International Conference on Software Engineering: Software Engineering in Practice Track (ICSE-SEIP)

作者： Daniel Russo Paolo Ciancarini Tommaso Falasconi Massimo Tomasi Dept. of Computer Science University of Bologna Bologna Italy Technology Strategy & Architecture Deloitte Consulting Milan Italy

ISBN: (纸本)9781538627181

This paper reports on a Delphi-like study about the Italian banking IT sector's greatest concerns. A new research framework was developed to pursue this vertical study: domain and country specific, using a Mixed Methods approach. Data collection was drawn in four phases starting with a high level randomly stratified panel of 13 senior managers and then a target-panel of 124 carefully selected and well-informed domain experts. We have identified and dealt with 15 concerns about the present situation, they were discussed in a framework inspired by the ISO 25010 standard. After having mapped the concerns within the ISO standard, we identified the emergence of a new meta quality dimension which impacts both on software quality and architectural description. Our inductive outcome lets this meta dimension emerge connecting both ISO 25010 and ISO 42010 standards.

关键词： Banking Companies Software quality Software engineering ISO Standards Information systems

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Understanding and Predicting Trends in Urban Freight Transport

Understanding and Predicting Trends in Urban Freight Transpo...

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International Conference on Mobile Data Management

作者： Petar Mrazovic Bahaeddin Eravci Josep Lluis Larriba-Pey Hakan Ferhatosmanoglu Mihhail Matskin Dept. of Software and Computer Systems Royal Institute of Technology Stockholm Sweden Dept. of Computer Engineering Bilkent University Ankara Turkey Dept. of Computer Architecture Polytechnic University of Catalonia Barcelona Spain Max Planck Institute for Informatics Saarbruecken Germany

ISBN: (纸本)9781538639337

Among different components of urban mobility, urban freight transport is usually considered as the least sustainable. Limited traffic infrastructures and increasing demands in dense urban regions lead to frequent delivery runs with smaller freight vehicles. This increases the traffic in urban areas and has negative impacts upon the quality of life in urban populations. Data driven optimizations are essential to better utilize existing urban transport infrastructures and to reduce the negative effects of freight deliveries for the cities. However, there is limited work and data driven research on urban delivery areas and freight transportation networks. In this paper, we collect and analyse data on urban freight deliveries and parking areas towards an optimized urban freight transportation system. Using a new check-in based mobile parking system for freight vehicles, we aim to understand and optimize freight distribution processes. We explore the relationship between areas' availability patterns and underlying traffic behaviour in order to understand the trends in urban freight transport. By applying the detected patterns we predict the availabilities of loading/unloading areas, and thus open up new possibilities for delivery route planning and better managing of freight transport infrastructures.

关键词： Loading Urban areas Mobile communication Market research Mobile applications Sociology Statistics

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Deep convolutional neural networks for brain image analysis on magnetic resonance imaging: a review

arXiv

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arXiv 2017年

作者： Bernal, Jose Kushibar, Kaisar Asfaw, Daniel S. Valverde, Sergi Oliver, Arnau Martí, Robert Lladó, Xavier Computer Vision and Robotics Institute Dept. of Computer Architecture and Technology University of Girona Ed. P-IV Av. Lluis Santaló s/n Girona17003 Spain

In recent years, deep convolutional neural networks (CNNs) have shown record-shattering performance in a variety of computer vision problems, such as visual object recognition, detection and segmentation. These methods have also been utilised in medical image analysis domain for lesion segmentation, anatomical segmentation and classification. We present an extensive literature review of CNN techniques applied in brain magnetic resonance imaging (MRI) analysis, focusing on the architectures, pre-processing, data-preparation and post-processing strategies available in these works. The aim of this study is three-fold. Our primary goal is to report how different CNN architectures have evolved, discuss state-of-the-art strategies, condense their results obtained using public datasets and examine their pros and cons. Second, this paper is intended to be a detailed reference of the research activity in deep CNN for brain MRI analysis. Finally, we present a perspective on the future of CNNs in which we hint some of the research directions in subsequent years. Copyright © 2017, The Authors. All rights reserved.

关键词： Magnetic resonance imaging

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On the implementation of BRS codes in Ceph

On the implementation of BRS codes in Ceph

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IEEE International Conference on Big Data

作者： Jiyang Zhang Hanxu Hou Kedan Li Hui Li Shenzhen Key Lab of Information Theory & Future Internet Architecture Shenzhen Graduate School Pekine University Shenzhen China Dept. of Computer Science Dongguan University of Technology Dongguan China

Ceph is a reliable, scalable, unified distributed storage system, and recently has become one of OpenStack's standard open source storage solutions. For the reason of the low performance, Ceph Filesystem (Cephfs) cannot employ erasure codes directly, especially for binary Reed-Solomon (BRS) codes, whose size of the parity block is larger than that of the data block. To address these problems, we implemented efficient BRS codes, and filled the gap between BRS codes and Cephfs by a simple conversion. In addition to that, an efficient framework consisting of filesystem, cache tier and storage tier was adopted in Ceph to ensure that the file data is finally stored with the erasure coding technology. The experimental results show that such a design spends a small amount of additional cost but obtains much better effects.

关键词： Registers Encoding Hard disks Algorithm design and analysis Standards Big Data computer architecture

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