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Pacific Asian Workshop on Intelligence and Security Informatics

作者： Li, Xiarong Zeng, Daniel Mao, Wenji Wang, Fei-yue Chinese Acad Sci Inst Automat Beijing 100190 Peoples R China

ISBN: (纸本)9783540691365

In recent years, the growth of the Internet has facilitated the rapid emergence of online communities. In this paper, we survey key research issues on online communities from the perspectives of both social science and computing technologies. We also sample several major online community applications, and propose some directions for future research.

关键词： online community social computing social theory computing technology

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Towards Dispersed Cloud computing

Towards Dispersed Cloud Computing

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IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)

作者： Spillner, Josef Schill, Alexander Tech Univ Dresden Fac Comp Sci D-01062 Dresden Germany

ISBN: (纸本)9781479940677

The growing number of locally and globally connected devices and infrastructure services is symptomatic for increasing user requirements on convenient, comfortable, fast and cheap remote computing and access to data. Distributed computing techniques in combination with on-demand Clouds help matching the requirements and the offered resources. This paper evaluates existing distributed computing models according to their specific code, data and resource handling and defines a specific one, called dispersed computing, by consolidating existing research on dispersed data transmission, data storage and code execution. It furthermore contributes a mapping of the model to typical Cloud environments. Complementary, we share our experience with dispersed computing implementations.

关键词： Cloud computing User needs dispersion computing technology encode data Remote computing Clouds MAPPING(MATHEMATICAL) Access Codes experience

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Counting Problems on Graphs: GPU Storage and Parallel computing Techniques

Counting Problems on Graphs: GPU Storage and Parallel Comput...

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26th IEEE International Parallel and Distributed Processing Symposium (IPDPS) / Workshop on High Performance Data Intensive computing

作者： Chatterjee, Amlan Radhakrishnan, Sridhar Antonio, John K. Univ Oklahoma Sch Comp Sci Norman OK 73019 USA

ISBN: (纸本)9780769546766

The availability and utility of large numbers of Graphical Processing Units (GPUs) have enabled parallel computations using extensive multi-threading. Sequential access to global memory and contention at the size-limited shared memory have been main impediments to fully exploiting potential performance in architectures having a massive number of GPUs. We propose novel memory storage and retrieval techniques that enable parallel graph computations to overcome the above issues. More specifically, given a graph G = (V, E) and an integer k <= vertical bar V vertical bar, we provide both storage techniques and algorithms to count the number of: a) connected subgraphs of size k;b) k cliques;and c) k independent sets, all of which can be exponential in number. Our storage technique is based on creating a breadth-first search tree and storing it along with non-tree edges in a novel way. The counting problems mentioned above have many uses, including the analysis of social networks.

关键词： PARALLEL PROCESSING (COMPUTERS) computing technology global memory memory storage shared memory GRAPPER PICK UP ARCHITECTURE Large Numbers volume of expired gas (VE) Multithreading

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Reducing Climate Change for Future Transportation: Roles of computing 6th

Reducing Climate Change for Future Transportation: Roles of ...

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6th International Conference on Computational Science and technology (ICCST)

作者： Kasim, Hairoladenan Ibrahim, Zul-Azri Al-Ghaili, Abbas M. Univ Tenaga Nas Coll Comp & Informat CCI Kajang 43000 Selangor Malaysia UNITEN Inst Informat & Comp Energy IICE Kajang Malaysia

ISBN: (纸本)9789811500589;9789811500572

For years, the fuels based vehicle has played a key role in the history of mankind. Such a type of vehicles has played it part not just as main transportation but also in many types of purposed as required of them. Currently, fossil fuels are the main sources of energy for the transportation mode around the world. Burning of fossil fuels will release heavy and vast amount of carbon agents into the environment which detrimental effect to the nature, surrounding and the population of earth be it humans, plants or mammals. For that a solution to reduce the gas emission from fossil fuels vehicle to prevent more ill-effect to the environment is required. New technology such as fully Electronic Vehicles (EVs) is considered as one of the best solutions to mitigate this problem. With the integration of computing or Information and Communication technology (ICT) can help to further improvise this future transportation and at the same time can reduce its negative impacts. This paper will review selected articles and papers published between 2001 and 2019 that contain information and terms that related climate change, global warming, environment, future transportation and computing technology. These articles were further inspected and the decision for its inclusion and exclusion were mediated to develop a comprehensive review on global warming issues that are related to transportation and how ICT can assist in mitigating them.

关键词： Electronic vehicle climate change global warming environment future transportation computing technology

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Acceleration of large-scale multi-physics simulation for biomedical EMC with many-core architecture based computing 1

Acceleration of large-scale multi-physics simulation for bio...

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1st URSI Atlantic Radio Science Conference (URSI AT-RASC)

作者： Suzuki, Y. Sasaki, M. Onishi, S. Imai, R. Takamura, M. Taki, M. Chakarothai, J. Sasaki, K. Wake, K. Watanabe, S. Kojima, M. Tsai, C-Y. Sasaki, H. Tokyo Metropolitan Univ Hachioji Tokyo Japan Natl Inst Informat & Commun Technol Tokyo Japan Kanazawa Med Univ Kanazawa Ishikawa Japan

ISBN: (纸本)9789090086286

Recently, computer simulation scale for biomedical EMC becomes extremely huge, because numerical models, which represent shape, structure, configuration, etc., of biological bodies, increase these preciseness. Parallelizing simulation code is one of the effective solutions to deal with such a high definition and massive scale problem. Finite difference methods, frequently used for solving biomedical EMC problem, are classified as the stencil scheme which has the nature of memory-bound feature. Hence, it is desirable to employ many-core architecture with the high-speed memory bandwidth (approximately 200-300GB/s) such as the graphics processing unit (GPU) or the many integrated core (MIC) hardware accelerators. The purpose of this study is to accelerate the multiphysics simulation system for numerical dosimetries by the many-core architecture based computing technique.

关键词： core construction acceleration electromagnetic compatibility computing technology physical simulation biomedical High definition ARCHITECTURE Building construction Graphics Processing Unit numerical models

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Soft computing techniques for analysis of kidnapping crimes in Colombia

Soft computing techniques for analysis of kidnapping crimes ...

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IEEE International Conference on Computational Intelligence for Homeland Security and Personal Safety

作者： Arciniegas, A Takahashi, S Torres, A Fundació Pais Libre Universidad de Los Andes Venezuela

ISBN: (纸本)0780391756

Techniques associated with soft computing have been proven to be useful for solving problems where lack of information and uncertainties ate present The flaws of traditional methodologies stein from the fuzziness, partial true, lack of information, and event imprecision of problems related to crime analysis such as kidnapping. Case based reasoning and expert's knowledge are the main inputs of some soft computing techniques that may be applied for analysis of kidnapping crimes Kidnapping is a problem framed by the lack of veracity, scarceness, fuzziness of information, and tacit, qualitative and unstructured knowledge in the minds of few experts. So, kidnapping is the kind of problem that could be modeled and analyzed by using some of the techniques included in the field of soft computing. This paper describes Hie use of fuzzy logic, fuzzy clustering and classification to analyze and evaluate kidnapping crimes in Colombia. These techniques are intended to predict the captivity duration, captor group and liberation conditions for any victim. Also, these techniques could be used to assess the impact of government security and economic policies on the evolution of the kidnapping crime.

关键词： Colombia Kidnapping computing technology crime Soft computing

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Resource-efficient and scalable solution to problem of real-data polyphase discrete Fourier transform channelisation with rational over-sampling factor

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IET SIGNAL PROCESSING 2013年第4期7卷 296-305页

作者： Jones, Keith John L3 TRL Technol Head Off Unit 19 Tewkesbury GL20 8DN Glos England

The study describes the results of research carried out into the design of a parallel and resource-efficient solution to the real-data polyphase discrete Fourier transform (DFT), or PDFT. The solution is able to exploit both the real-valued nature of the data and the parallel processing capabilities of the computing technology - assumed to be a field-programmable gate array - to yield a solution with a low size, weight and power requirement. A parallel computing architecture has been devised, based upon batch processing, whereby pipelined operation of the polyphase filter bank (PFB) is achieved using shared resources and pipelined operation of the real-data DFT using the resource-efficient regularised fast Hartley transform (RFHT). The PFB outputs are appropriately re-ordered for input to the RFHT by means of a suitably defined finite state machine. The resulting design, which includes a flexible up-sampling capability (with rational over-sampling factor) to address the problem of adjacent channel interference, trade-off time complexity against space complexity in order to satisfy the associated timing constraints. The solution is also scalable, in terms of the number of channels, so that it might be easily adapted, for new or multiple applications, at minimal re-design effort and cost.

关键词： adjacent channel interference channel bank filters computational complexity discrete Fourier transforms finite state machines Hartley transforms parallel processing resource-efficient solution scalable solution real-data polyphase discrete Fourier transform channelisation rational over-sampling factor PDFT parallel processing capabilities computing technology field programmable gate array parallel computing architecture batch processing pipelined operation polyphase filter bank PFB real-data DFT resource-efficient regularised fast Hartley transform resource-efficient RFHT finite state machine flexible up-sampling capability adjacent channel interference trade-off time complexity space complexity timing constraints adjacent channel interference channel bank filters computational complexity discrete Fourier transforms finite state machines Hartley transforms parallel processing resource-efficient solution scalable solution real-data polyphase discrete Fourier transform channelisation rational over-sampling factor PDFT parallel processing capabilities computing technology field programmable gate array parallel computing architecture batch processing pipelined operation polyphase filter bank PFB real-data DFT resource-efficient regularised fast Hartley transform resource-efficient RFHT finite state machine flexible up-sampling capability adjacent channel interference trade-off time complexity space complexity timing constraints

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Analysis on precise intermodulation product computing technique and reduction of computational load

Analysis on precise intermodulation product computing techni...

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5th International Symposium on Communications Control and Signal Processing, ISCCSP 2012

作者： Oo, Nay Gan, Woon-Seng Fraunhofer Institute for Digital Media Technologies Oldenburg Germany School of Electrical and Electronic Engineering Nanyang Technological University Singapore Singapore

ISBN: (纸本)9781467302760

In this paper, a modified version of precise intermodulation technique is presented with detailed mathematical analysis. The modified technique can reduce the computational growth of the original technique by 25-50% while obtaining the same results. The main idea is based on exploitation of triangular symmetric pattern in polynomials. © 2012 IEEE.

关键词： intermodulation products computing technology Polynomial exploitation intermodulation LOAD

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Electromagnetic fields in planar-layered media close to a zero of the permittivity

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JOURNAL OF COMMUNICATIONS technology AND ELECTRONICS 2000年第5期45卷 496-502页

作者： Kozlov, IP

The solution is considered to the physical problem concerning the propagation of a plane electromagnetic wave in an inhomogeneous planar dielectric layer close to a critical point (zero of the permittivity) where the solution qualitatively depends on small variations of the problem parameters. The method of solution employing elementary functions enables one to simplify the analysis and to create the efficient calculation technique.

关键词： computing technology Zero electromagnetic waves Dielectric constant

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Refined Numerical Simulation of Three-Dimensional Riveting in Laminated Composites

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JOURNAL OF AIRCRAFT 2011年第4期48卷 1434-1443页

作者： Yoon, Tae Ho Kim, Seung Jo Seoul Natl Univ Sch Mech & Aerosp Engn Seoul 151744 South Korea

Riveting in laminated composites is not carried out, because the riveting process can easily induce failure and form a nonuniform interference fit. An electromagnetic riveting riveter provides a relatively uniform interference fit with no direct failure in the riveted joint. Finite element numerical simulation of three-dimensional riveting is conducted by considering the sine wave of force history for the electromagnetic riveting riveter. To reflect the physical phenomenon of the complicated contact of riveting in laminated composites, a refined modeling of the washer inner fillet is considered, and the parallel computations using LS-DYNA are used. Refined simulation is validated by experiments reported in the literature. The electromagnetic riveting is properly applied for riveting in laminated composites. Optimized maximum riveting force is obtained for relative uniform interference based on the criterion of relative interference for fatigue life extension. A parametric study of the washer effects during the riveting process is investigated to obtain a proper riveted joint in laminated composites.

关键词： Fiber Volume Fraction Numerical Simulation Maximum Shear Stresses Composite Structures Fatigue Life Parallel computing Environment Parallel computing Systems Numerical Analysis Yield Stress computing technology

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