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Membranes for Electrochemical Applications - 211th ECS Meeting

作者： Gurrappa, I. Verma, Jitendra Krishna, V. Rama Defence Metallurgical Research Laboratory Kanchanbagh PO Hyderabad-500 058 India Advanced Materials Research Institute School of Computing Engineering and Information Sciences Northumbria University Newcastle Upon Tyne United Kingdom

ISBN: (纸本)9781605601809

The present paper explains the efforts made in synthesizing Ni-Al 2O3 nonocomposite coatings with enhanced properties by varying the additive concentration systematically. Microstructural, morphological and microhardness measurements revealed that the optimized additive concentration helped in improving the coatings properties considerably. The ceramic particles were distributed uniformly over nanocrystalline nickel matrix for the optimized additive concentration as evidenced from different characterization techniques. It was stressed that the addition of optimum content of additive is highly essential in order to obtain nanocomposite coatings with enhanced properties. Finally, the mechanism involved in improving the enhanced properties of nanocomposite coatings was described. © The Electrochemical Society.

关键词： Aluminum oxide

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Construction of the Corpus of Spontaneous Japanese and annotation techniques

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Journal of the National institute of Information and Communications Technology 2007年第3期54卷 5-14页

作者： Uchimoto, Kiyotaka Isahara, Hitoshi Takanashi, Katsuya Takeuchi, Kazuhiro Nobata, Chikashi Morimoto, Ikuyo Yamada, Atsushi Computational Linguistic Group Knowledge Creating Communication Research Center Academic Center for Computing and Media Studies Kyoto University School of Computer Science University of Manchester Advanced Software Technology and Mechatronics Research Institute of Kyoto Dept. of Engineering Informatics Osaka Elmectro-Communication University School of Low and Politics Kwansei Gakuin University

This paper describes annotations for the Corpus of Spontaneous Japanese. The information we annotated to the corpus includes morphemes, clause units, dependency structures, summaries, and discourse structures. They are integrated in the form of XML. Morphological information was semi-automatically annotated to the transcribed text by reducing the human labor cost within the framework of morphological annotation that we proposed. Next, clause unites were detected based on the morphological information as basic units for our annotation. Then, dependency structures, summaries, discourse structures were annotated based on the clause units.

关键词： Information technology

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Improved parallelization of the modular ray tracing in the method of characteristics code decart

Improved parallelization of the modular ray tracing in the m...

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Joint International Topical Meeting on Mathematics and Computations and Supercomputing in Nuclear Applications, M and C + SNA 2007

作者： Kochunas, B. Downar, T.J. Mohamed, Sayeed Thomas, J.W. Department of Nuclear Engineering University of California Berkeley 4155 Etcheverry Hall Berkeley CA 94720-1730 Computing Research Institute Rosen Center for Advanced Computing Purdue University West Lafayette IN 47906 Argonne National Laboratory Argonne IL 60439

ISBN: (纸本)0894480596

The solution of the Boltzmann transport equation using Method of Characteristics ray tracing can be accurate yet computationally expensive. Ray tracing would be inherently parallelizable with a very fine granularity if the boundary condition associated with each ray were known a priori. In practice, however, ray tracing is serial since the boundary condition for one ray is generally obtained from another ray in the problem. In the work here, an alternative implementation of ray tracing is presented that minimizes serialization and reduces the memory requirements. A new algorithm was implemented in the MOC code DeCART and demonstrated for a BWR assembly model.

关键词： Ray tracing

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ParalleX: A study of a new parallel computation model

ParalleX: A study of a new parallel computation model

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21st International Parallel and Distributed Processing Symposium, IPDPS 2007

作者： Gao, Guang R. Sterling, Thomas Stevens, Rick Hereld, Mark Zhu, Weirong Department of Electrical and Computer Engineering University of Delaware Center for Advanced Computing Research California Institute of Technology Department of Computer Science Louisiana State University Mathematics and Computer Science Division Argonne National Laboratory

ISBN: (纸本)1424409101

This paper proposes the study of a new computation model that attempts to address the underlying sources of performance degradation (e.g. latency, overhead, and starvation) and the difficulties of programmer productivity (e.g. explicit locality management and scheduling, performance tuning, fragmented memory, and synchronous global barriers) to dramatically enhance the broad effectiveness of parallel processing for high end computing. In this paper, we present the progress of our research on a parallel programming and execution model - mainly, ParalleX. We describe the functional elements of ParalleX, one such model being explored as part of this project. We also report our progress on the development and study of a subset of ParalleX - the LITL-X at University of Delaware. We then present a novel architecture model - Gilgamesh II - as a ParalleX processing architecture. A design point study of Gilgamesh II and the architecture concept strategy are presented. © 2007 IEEE.

关键词： Parallel processing systems

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The coupled analysis of electromagnetic wave and heat conduction with rotational motion of heated target and temperature-dependent complex permittivity

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IEEJ Transactions on Power and Energy 2007年第8期127卷 902-910+4页

作者： Okamoto, Yoshifumi Himeno, Ryutaro Ushida, Kiminori Ahagon, Akira Fujiwara, Koji Advanced Center for Computing and Communication Institute of Physical and Chemical Research 2-1 Hirosawa Wako 351-0198 Japan Eco-Soft Material Research Unit Institute of Physical and Chemical Research 2-1 Hirosawa Wako 351-0198 Japan Science Solutions International Laboratory Inc. 2-21-7 Naka-cho Meguro-ku Tokyo 153-0065 Japan Department of Electrical Engineering Doshisha University 1-3 Tatara-Miyakodani Kyotanabe 610-0321 Japan Institute of Physical and Chemical Research Japan Science Solutions International Laboratory Inc. Japan Doshisha University Japan

In order to evaluate the heated process of the target, S parameter, and initial design of cavity size in the furnaces for dielectric heating such as microwave oven, the coupled analysis of electromagnetic wave and heat conduction (EM-HC coupled analysis) is a useful tool for practical design. In this paper, valuable EM-HC coupled analysis method with rotational motion of heated target such as turntable and temperature-dependent complex permittivity by using edge-based finite element method is proposed. As a result of useful investigation of the proposed method, the effectiveness in tracing the detailed temperature rise of dielectric target is demonstrated. finite element method, electromagnetic wave analysis, heat conduction analysis, coupled analysis, rotational motion, temperature-dependent complex permittivity.

关键词： Electromagnetic waves

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A multiobjective approach for optimizing electooptic modulators

A multiobjective approach for optimizing electooptic modulat...

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2007 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference, IMOC

作者： Muraro Jr., A. Passaro, A. Abe, N.M. Preto, A.J. Stephany, S. Virtual Engineering Laboratory Applied Physics Division Institute for Advanced Studies São José Dos Campos SP 12228-001 Brazil Laboratory for Computing and Applied Mathematics National Institute for Space Research LAC/INPE São José Dos Campos SP 12227-010 Brazil

ISBN: (纸本)1424406617

This work presents preliminary results of a multiobjective approach for optimization of some design parameters of Mach-Zehnder-based lithium niobate modulators. This process uses a genetic algorithm to iteratively refine candidate sets of parameters and the characterization of the modulators is performed by the Finite Element Method. Test cases include optimization of a conventional Mach-Zehnder modulator and a variation of this kind of device using additional floating electrodes. The set of characteristics include parameters such as Zc, Nm and VπL. © 2007 IEEE.

关键词： Finite element method

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Grasp strategy when experiencing hands of various size

Grasp strategy when experiencing hands of various size

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IEEE International Conference on Robotics and Biomimetics

作者： Kenji Terabayashi Jun Ota Natsuki Miyata Department of Precision Engineering University of Tokyo Tokyo Japan Digital Human Research Center National Institute for Advanced Industrial Science and Technology Tokyo Japan

ISBN: (纸本)9781424417612

An objective evaluation of a system that provides the experience of hands of different sizes is performed from the viewpoint of the change in grasping pattern. The hand size is recognized as being different from that of the subject's actual hand (normal hand) when the hands of various sizes are presented in an environment that appears to be of constant size. This is achieved by viewing a hand and an analogous object through an optical system that adjusts its scaling rate to visually maintain the object size. An objective evaluation of this system is performed by investigating the grasp strategy depending on the hand size and object size reported in T. Shirai et al. (1998). The experimental results reveal that a similar grasp strategy that depends on hand size is observed for the proposed system based on the presented hand size. In addition, the experimental results reveal that it is important to vary the hand and object sizes visually through an optical system rather than simply using analogous objects without visual scaling.

关键词： Shape Grasping Performance evaluation Biomedical optical imaging Usability Robots Biomimetics Precision engineering Humans Reproducibility of results

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A Simultaneous View Interpolation and Multiplexing Method using Stereo Image Pairs for Lenticular Display

A Simultaneous View Interpolation and Multiplexing Method us...

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IEEE International Conference on Image Processing

作者： HanShin Lim Seok-Hoon Kim Yun-Gu Lee HyunWook Park Department of Electrical Engineering Korea Advanced Institute of Science and Technology South Korea Digital Media Research and Development Center Samsung Electronics Company Limited South Korea

Nowadays, the slanted lenticular display becomes a representative one among the commercially introduced autostereoscopic displays. The paper presents a simple method to correct the lenticular alignment error by compensating the correction coefficients to the view number determination formula. Then, based on the corrected view numbers, the proposed algorithm simultaneously performs floating-point viewpoint generation and multiplexing on the scanline using the stereo image pairs and its depth information. Experimental results show that lenticular images, in which distortion and artifact due to lenticular alignment error are considerably reduced, are generated rapidly by using the proposed algorithm.

关键词： Interpolation Flat panel displays Pixel Error correction Stereo vision Three dimensional displays Computer vision research and development Computer errors Image converters

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A master-worker type eigensolver for molecular orbital computations

A master-worker type eigensolver for molecular orbital compu...

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8th International Workshop on Applied Parallel computing, PARA 2006

作者： Sakurai, Tetsuya Kodaki, Yoshihisa Tadano, Hiroto Umeda, Hiroaki Inadomi, Yuichi Watanabe, Toshio Nagashima, Umpei Department of Computer Science University of Tsukuba Tsukuba 305-8573 Japan Graduate School of Systems and Information Engineering University of Tsukuba Tsukuba 305-8573 Japan Core Research for Evolutional Science and Technology Japan Science and Technology Agency Japan Computational Science Research Division National Institute of Advanced Industrial Science and Technology Computing and Communications Center Kyushu University Fukuoka 812-8581 Japan

ISBN: (纸本)9783540757542

We consider a parallel method for solving generalized eigen-value problems that arise from molecular orbital computations. We use a moment-based method that finds several eigenvalues and their corresponding eigenvectors in a given domain, which is suitable for master-worker type parallel programming models. The computation of eigen-values using explicit moments is sometimes numerically unstable. We show that a Rayleigh-Ritz procedure can be used to avoid the use of explicit moments. As a test problem, we use the matrices that arise in the calculation of molecular orbitals. We report the performance of the application of the proposed method with several PC clusters connected through a hybrid MPI and GridRPC system. © Springer-Verlag Berlin Heidelberg 2007.

关键词： Computation theory

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Software tools for the design and analysis of quantum well, quantum wire and quantum dot devices

Software tools for the design and analysis of quantum well, ...

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SBMO/IEEE MTT-S International Conference on Microwave and Optoelectronics (IMOC)

作者： R. Y. Tanaka A. Passaro N. M. Abe J. M. Villas-Boas G. S. Vieira S. Stephany Applied Physics Division Institute for Advanced Studies Virtual Engineering Laboratory Sao Paulo Brazil Laboratory for Computing and Applied Mathematics National Institute for Space Research LAC/INPE Sao Paulo Brazil

In this work we present a set of computer codes based either on the finite element method or on the expansion of the Hamiltonian in a defined basis intended to help the design and the analysis of infrared photo-detectors based on semiconductor quantum wells and quantum dots. Our codes are capable of handling both arbitrary potential and effective mass profiles and they take into account the strain induced by lattice mismatch between different materials. In the present version, the computer codes allow the computation of eigenvalues, eigenvectors and oscillator strain for optical transitions. The results are presented in a graphic interface and some examples are included.

关键词： Quantum dots Software tools Wire Optical computing Quantum computing Capacitive sensors Finite element methods Effective mass Lattices Optical materials

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