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COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 2015年第5期34卷

作者： Oszkár Bíró David A. Lowther Piergiorgio Alotto Institute for Fundamentals and Theory in Electrical Engineering Graz University of Technology Graz Austria and Christian Doppler Laboratory for Multiphysical Simulation Analysis and Design of Electrical Machines Graz University of Technology Graz Austria Department of Electrical and Computer Engineering， McGill University，Montreal， Canada Dipartimento di Ingegneria Industriale Università di Padova Padova Italy

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Investigation of Mechanical Properties, Microstructure and Wear Rate of High Leaded Tin Bronze after Multidirectional Forging

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Procedia Materials Science 2014年 5卷 1081-1089页

作者： Rahul Gupta Sanjay Srivastava G.V. Preetham Kumar Sanjay K. Panthi Ph.D Research Scholar Department of Material Science & Metallurgical Engineering Maulana Azad National Institute of Technology Bhopal 462003 India Associate Professor Department of Material Science & Metallurgical Engineering Maulana Azad National Institute of Technology Bhopal 462003 India Assistant Professor Department of Metallurgical & Materials Engineering National Institute of Technology Karnataka Surathkal Mangalore 575025 India Scientist Computer Simulation & Design Center Advanced Materials and Processes Research Institute (AMPRI) Near Habibganj Naka Hoshangabad Road Bhopal 462064 India

In this work, the change in mechanical properties, microstructure and wear rate of high leaded tin bronze material was studied after multidirectional forging (MDF) process. The total equivalent strain of 0.75 was applied during MDF process result in the improvement of ultimate tensile strength, yield strength, hardness and wear rate along with maintained ductility with the increase in the number of MDF pass. The initial average grain size of 120 nm was refined to the final grain size of 37 nm. The transmission electron microscope, scanning electron microscope and optical microscope was used for the microstructure study of the undeformed, MDForged and wear worn surfaces.

关键词： Multidirectional forging high leaded tin bronze mechanical properties microstructure wear

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Mixed reality space travel for physics learning

Mixed reality space travel for physics learning

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5th International Conference on Virtual, Augmented and Mixed Reality: designing and Developing Augmented and Virtual Environments, VAMR 2013, Held as Part of 15th International Conference on Human-computer Interaction, HCI International 2013

作者： Hughes, Darin E. Sabbagh, Shabnam Lindgren, Robb Moshell, J. Michael Hughes, Charles E. Institute for Simulation and Training University of Central Florida Orlando FL United States School of Visual Arts and Design University of Central Florida Orlando FL United States Department of Electrical Engineering and Computer Science University of Central Florida Orlando FL United States

ISBN: (纸本)9783642394195

In this paper we describe research being conducted on a mixed reality simulation called MEteor that is designed for informal physics learning in science centers. MEteor is a 30 x 10 foot floor area where participants use their bodies to interact with projected astronomical imagery. Participants walk and run across the floor to simulate how objects move in space, and to enact basic physics principles. Key to the success of this learning environment is an interface scheme that supports the central metaphor of "child as asteroid." Using video data collected in our studies we examine the extent to which feedback mechanisms and interface conventions strengthened the metaphorical connection, and we describe ways the interaction design can be improved for future iterations. © 2013 Springer-Verlag Berlin Heidelberg.

关键词： Mixed reality

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Towards Domain-Specific Computing for Stencil Codes in HPC

Towards Domain-Specific Computing for Stencil Codes in HPC

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High Performance Computing, Networking, Storage and Analysis (SCC), SC Companion:

作者： Richard Membarth Frank Hannig Jürgen Teich Harald Köstler Hardware/Software Co-Design Department of Computer Science University of Erlangen-Nuremberg Germany System Simulation Department of Computer Science University of Erlangen-Nuremberg Germany

ISBN: (纸本)9781467362184

High Performance Computing (HPC) systems are nowadays more and more heterogeneous. Different processor types can be found on a single node including accelerators such as Graphics Processing Units (GPUs). To cope with the challenge of programming such complex systems, this work presents a domain-specific approach to automatically generate code tailored to different processor types. Low-level CUDA and OpenCL is generated from a high-level description of a geometric multigrid algorithm written in a Domain-Specific Language (DSL) instead of writing hand-tuned code for GPU accelerators. By decoupling the algorithm from its schedule, the proposed approach allows to generate efficient stencil codes. Our results show that competitive performance compared to hand-tuned codes can be achieved and that more than 25 frames per second for 16.8 Megapixel images are obtained for full High Dynamic Range (HDR) compression of 2D medical data sets.

关键词： Domain-specific language Stencil codes Code generation GPU CUDA OpenCL Code generation High Performance Computing Codes Graphics Processing Unit GRAPPER PICK UP Accelerators application-specific language

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Analysis of evacuation performance of mergiing points in stadiums based on crowd simulation

Analysis of evacuation performance of mergiing points in sta...

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12th Conference of International Building Performance simulation Association Building simulation 2011, BS 2011

作者： Liu, Ying Liu, Deming Badler, Norman Malkawi, Ali School of Architecture Harbin Institute of Technology Harbin China Department of Computer and Information Science University of Pennsylvania Philadelphia United States T. C. Chan Centre for Building Simulation and Energy Studies School of Design University of Pennsylvania Philadelphia United States

Holding huge amount of spectators simultaneously during sports and recreational events, the problem of outdoor stadiums is increasingly focusing on how to improve evacuation performance. At first, the prescriptive codes related to stadium evacuation were compared, and the characteristics and movements of stadium crowd were studied to build more reliable evacuation simulation scenarios. Next, the design variations of most congested merging points in outdoor stadiums, which involve gangway intersections, vomitory access and stairway access underneath the stands were investigated. Finally, we used a CA model to simulate the evacuation processes in different cases. By analyzing the output value of egress time, waiting time and total cost through the journey, evacuation performances of different design strategies were compared and discussed.

关键词： Stadiums

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Developing a statechart-to-ECMAscript compiler optimized for SVG user interface development for the world wide web

Developing a statechart-to-ECMAscript compiler optimized for...

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8th International Conference on Scalable Vector Graphics, SVG Open 2010

作者： Beard, Jacob Vangheluwe, Hans Modelling Simulation and Design Lab School of Computer Science McGill University Montréal QC Canada Department of Mathematics and Computer Science Modelling Simulation and Design Lab University of Antwerp Antwerp Belgium

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Neural networks for optimal form design of personal digital assistants 1

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15th International Conference on Neuro-Information Processing, ICONIP 2008

作者： Wang, Chen-Cheng Lin, Yang-Cheng Yeh, Chung-Hsing Department of Computer Simulation and Design Shih Chien University Kaohsiung 845 Taiwan Department of Arts and Design National Dong Hwa University Hualien 970 Taiwan Clayton School of Information Technology Faculty of Information Technology Monash University Clayton VIC 3800 Australia

ISBN: (数字)9783642024900

ISBN: (纸本)3642024890

This paper presents a neural network (NN) approach to determining the optimal form design of personal digital assistants (PDAs) that best matches a given set of product images perceived by consumers. 32 representative PDAs and 9 design form elements of PDAs are identified as samples in an experimental study to illustrate how the approach works. Four NN models are built with different hidden neurons in order to examine how a particular combination of PDA form elements matches the desirable product images. The performance evaluation result shows that the number of hidden neurons has no significant effect on the predictive ability of the four NN models. The NN models can be used to construct a form design database for supporting form design decisions in a new PDA product development process. © 2009 Springer Berlin Heidelberg.

关键词： Personal digital assistants

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Applying neural networks to consumer-oriented product design

Applying neural networks to consumer-oriented product design

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2009 International Conference on Artificial Intelligence and Computational Intelligence, AICI 2009

作者： Lin, Yang-Cheng Yeh, Chung-Hsing Wang, Chen-Cheng Department of Arts and Design National Dong Hwa University Hualien 970 Taiwan Clayton School of Information Technology Faculty of Information Technology Monash University Clayton VIC 3800 Australia Department of Computer Simulation and Design Shih Chien University Kaohsiung 845 Taiwan

ISBN: (纸本)9780769538167

How to create highly-reputable designs and hot-selling products is an essential issue on product design. This paper presents an experimental study to explore the relationship between the consumers' perceptions and product form elements, using one linear quantitative technique (i.e. the grey model) and one nonlinear quantitative technique (i.e. the neural network model). Thirty representative personal digital assistants (PDAs) and six design form elements of PDAs are identified as samples in an experimental study to illustrate how these techniques work. The performance evaluation result shows that the NN model is better to be used to construct a form design database for helping product designers comprehend consumers' perceptions, thus supporting form design decisions in a new PDA product development process. © 2009 IEEE.

关键词： Product design

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Applying Neural Networks to Consumer-Oriented Product design

Applying Neural Networks to Consumer-Oriented Product Design

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International Conference on Artificial Intelligence and Computational Intelligence (AICI)

作者： Yang-Cheng Lin Chung-Hsing Yeh Chen-Cheng Wang Department of Arts and Design National Dong Hwa University Hualien Taiwan Clayton School of Information Technology Faculty of Information Technology Monash University Clayton VIC Australia Department of Computer Simulation and Design Shih Chien University Kaohsiung Taiwan

关键词： Neural networks Product design Personal digital assistants Information technology design engineering Differential equations Artificial intelligence Computational intelligence Artificial neural networks Art

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Visualizing particle/flow structure interactions in the small bronchial tubes

Visualizing particle/flow structure interactions in the smal...

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作者： Soni, Bela Thompson, David Machiraju, Raghu Computational Simulation and Design Center Mississippi State University Department of Aerospace Engineering Mississippi State University Department of Computer Science and Engineering Ohio State University

Particle deposition in the small bronchial tubes (generations six through twelve) is strongly influenced by the vortex-dominated secondary flows that are induced by axial curvature of the tubes. In this paper, we employ particle destination maps in conjunction with two-dimensional, finite-time Lyapunov exponent maps to illustrate how the trajectories of finite-mass particles are influenced by the presence of vortices. We consider two three-generation bronchial tube models: a planar, asymmetric geometry and a non-planar, asymmetric geometry. Our visualizations demonstrate that these techniques, coupled with judiciously seeded particle trajectories, are effective tools for studying particle/flow structure interactions. © 2008 IEEE.

关键词： Vortex flow

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