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NTT Technical Review 2013年第4期11卷

作者： Seko, Shunichi Motegi, Manabu Ihara, Masayuki Kobayashi, Toru Kataoka, Ryoji NTT Service Evolution Laboratories Japan Electrical Engineering and Computer Science Division Graduate School of Engineering Nagasaki University Japan

NTT Service Evolution Laboratories has developed the personal information style, which is a technique of providing an IT (information technology) usage environment that is customized to each user's individual style. This article introduces a technique for obtaining information related to a video that a user is watching and casually displaying the information on the terminal in front of the user. This related information can be personalized at the touch of a fingertip, as in the interaction between a television and a tablet terminal.

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Standardization trends in W3C relating to next-generation content distribution services

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NTT Technical Review 2013年第4期11卷

作者： Ishii, Shinji Watanabe, Tomoki Ihara, Masayuki Kobayashi, Toru NTT Service Evolution Laboratories Japan Electrical Engineering and Computer Science Division Graduate School of Engineering Nagasaki University Japan

The prices of liquid crystal displays and touch panels are continuing to decrease, and accordingly, the popularity of devices that use web browsers is increasing. These devices include smartphones, tablets, televisions, car navigation systems, e-book readers, and digital signage systems. There is also a growing transition towards open platforms that use web browser technology to further expand business activities and popularize services. This article introduces services designed for use with devices newly equipped with web browser functions, and reviews trends in the World Wide Web Consortium (W3C), which is the de facto standardization organization for web browser specifications.

关键词： Web browsers

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Numerical Analysis of the Noise Reduction Effect by Superposition of High Frequency Current in Semiconductor Lasers

Numerical Analysis of the Noise Reduction Effect by Superpos...

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Conference on Lasers and Electro-Optics Pacific Rim

作者： A. Sazzad M. S. Imran B. Minoru Yamada Division of Electrical and Computer Engineering Graduate School of Natural Science and Technology Kanazawa University

Suppression phenomena of optical feedback noise in semiconductor lasers by the superposition of high frequency current have been numerically analyzed and explained with approximated but analytical equations. Correspon... 详细信息

ISBN: (纸本)9781467364744

关键词： Frequency modulation Noise reduction Numerical analysis Optical feedback Semiconductor lasers Spontaneous emission

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A bee-inspired algorithm for optimal data clustering

A bee-inspired algorithm for optimal data clustering

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2013 IEEE Congress on Evolutionary Computation, CEC 2013

作者： Cruz, Davila Patricia Ferreira Maia, Renato Dourado Szabo, Alexandre De Castro, Leandro Nunes Educational Foundation of Montes Claros Montes Claros MG Brazil Computer Sciences Department State University of Montes Claros Montes Claros MG Brazil Graduate Program in Electrical Engineering Mackenzie University São Paulo Brazil

ISBN: (纸本)9781479904549

The amount of data generated in different knowledge areas has made it necessary the use of data mining tools capable of automatically analyzing and extracting knowledge from datasets. Clustering is one of the most important tasks in data mining and can be defined as the process of partitioning objects into groups or clusters, such that objects in the same group are more similar to one another than to objects belonging to other groups. In this context, this paper aims to propose an adaptation of a bee-inspired optimization algorithm so that it is able to solve data clustering problems. The algorithm was run for different datasets and the results obtained showed high quality clusters and diversity of solutions, whilst a suitable number of clusters was automatically determined. © 2013 IEEE.

关键词： Swarm intelligence

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Reconstruction of Object Surface from Multi-View Images Improved by Image Forces

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SICE Journal of Control, Measurement, and System Integration 2013年第4期6卷 231-237页

作者： Karolina Nurzynska Mamoru Kubo Ken-ichiro Muramoto Institute of Informatics Silesian University of Technology Division of Electrical Engineering and Computer Science Graduate School of Natural Science and Technology Kanazawa University National College of Science

Currently available techniques for surface reconstruction from multi-view images require a large number of images in order to assure high surface resolution and precise detail reconstruction. Obtaining such big number of images in some cases is impossible; moreover, it may impose high preparation cost. Therefore, to address this drawback, a novel method is presented. This method is based on the visual hull approach. It assumes to be able to reconstruct three dimensional manifolds without edge from images, the number of necessary images should be as small as possible, and the quality of reconstructed mesh should be good. Applying this method for four images from a dino dataset proved the proposed method works well.

关键词： surface reconstruction multi-view images surface carving

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Wide rand and fast response control of PMSM by using model predictive control

Wide rand and fast response control of PMSM by using model p...

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International Conference on Power Electronics and Drive Systems (PEDS)

作者： Shinji Doki Takuya Sakamoto Department of Electrical Engineering and Computer Science Graduate School of Engineering Nagoya University Nagoya Aichi Japan

This paper describes our proposed torque control for PMSM drive system by using model predictive control (MPC), The MPC control system is possible to drive PMSM with fast response torque response in wide speed rage by utilizing overmodulation and rectangular-wave mode of inverter. In this paper, the performances are evaluated by simulation in various drive patterns.

关键词： Inverters Switches Torque Voltage control Torque control Predictive control

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Topological Polymer Dispersed Liquid Crystals with Bulk Nematic Defect Lines Pinned to Handlebody Surfaces

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Physical Review Letters 2014年第19期112卷 197801-197801页

作者： Michael G. Campbell Mykola Tasinkevych Ivan I. Smalyukh Department of Physics University of Colorado Boulder Colorado 80309 USA Liquid Crystal Materials Research Center University of Colorado Boulder Colorado 80309 USA Max-Planck-Institut für Intelligente Systeme Heisenbergstraße 3 D-70569 Stuttgart Germany Institut für Theoretische Physik IV Universität Stuttgart Pfaffenwaldring 57 D-70569 Stuttgart Germany Department of Electrical Computer and Energy Engineering and Materials Science and Engineering Program University of Colorado Boulder Colorado 80309 USA Renewable and Sustainable Energy Institute National Renewable Energy Laboratory and University of Colorado Boulder Colorado 80309 USA

Polymer dispersed liquid crystals are a useful model system for studying the relationship between surface topology and defect structures. They are comprised of a polymer matrix with suspended spherical nematic drops and are topologically constrained to host defects of an elementary hedgehog charge per droplet, such as bulk or surface point defects or closed disclination loops. We control the genus of the closed surfaces confining such micrometer-sized nematic drops with tangential boundary conditions for molecular alignment imposed by the polymer matrix, allowing us to avoid defects or, on the contrary, to generate them in a controlled way. We show, both experimentally and through numerical modeling, that topological constraints in nematic microdrops can be satisfied by hosting topologically stable half-integer bulk defect lines anchored to opposite sides of handlebody surfaces. This enriches the interplay of topologies of closed surfaces and fields with nonpolar symmetry, yielding new unexpected configurations that cannot be realized in vector fields, having potential implications for topologically similar defects in cosmology and other fields.

关键词： NEMATIC liquid crystals RESEARCH POLYMERS -- Research HANDLEBODIES SURFACES (Technology) -- Defects PHYSICS research

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Simultaneous OPC- and CMP-aware routing based on accurate closed-form modeling 13

Simultaneous OPC- and CMP-aware routing based on accurate cl...

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2013 ACM International Symposium on Physical Design, ISPD 2013

作者： Fang, Shao-Yun Lin, Chung-Wei Liao, Guang-Wan Chang, Yao-Wen Graduate Institute of Electronics Engineering National Taiwan University Taipei 106 Taiwan Department of Electrical Engineering and Computer Science University of California Berkeley CA 94720 United States Department of Electrical Engineering National Taiwan University Taipei 106 Taiwan Research Center for Information Technology Innovation Academia Sinica Taipei 115 Taiwan

ISBN: (纸本)9781450318679

As the process technology advances to the nanometer nodes, Optical Proximity Correction (OPC) is the most popular Resolution Enhancement Technique (RET) in industry for subwavelength lithography, and the inter-level dielectric (ILD) thickness variation caused by the planarization step of a Chemical Mechanical Polishing (CMP) process also plays a key role for interconnect yield. Considering the OPC and CMP effects simultaneously during routing can significantly alleviate the width and thickness variations (and thus the whole 3D geometry variations) of post-layout RET and CMP operations. In this paper, we first present an efficient, yet sufficiently accurate closed-form formula for printed width computation and dummy-insertion-aware routing cost derivation. The formula provides an effective cost modeling to guide a router for better post-layout OPC correction and CMP planarization. Compared with the state-of-the-art OPC-friendly router, QL-MGR (which does not consider CMP), the experimental results show that our router can achieve respective 19% and 6% reductions in the maximum and average layout distortions. Compared with the state-of-the-art CMP-aware router, TTR (which does not consider OPC), the experimental results show that our router can achieve respective 19% and 25% reductions in the peak-to-peak thickness and thickness variance. These results demonstrate that our simultaneous OPC- and CMP-aware router can lead to significant improvements for layout integrity. © 2013 ACM.

关键词： Chemical mechanical polishing

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Comparison of morphological properties of different types of coarse aggregates

Comparison of morphological properties of different types of...

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2013 Airfield and Highway Pavement Conference: Sustainable and Efficient Pavements

作者： Singh, Dharamveer Zaman, Musharraf Commuri, Sesh Bombay Powai Mumbai 400076 India Research and Graduate Program College of Engineering University of Oklahoma 202 W. Boyd St. Norman OK 73019 United States School of Electrical and Computer Engineering University of Oklahoma Norman OK 73019 United States

ISBN: (纸本)9780784413005

The present study was undertaken to compare angularity, texture, and flat and elongated (F&E) particles of three different types (namely, granite, rhyolite, and limestone) of coarse aggregates. An aggregate-imaging system (AIMS) manufactured by Pine Instruments Inc., was used to measure the shape parameters of the aggregates. Comparison of shape parameters was performed by plotting the distribution of different types of angular particles (i.e., rounded, sub-rounded, sub-angular, and angular);texture particles (i.e., polished, smooth, low, medium, and high roughness);and F&E particles (maximum to minimum dimension ratio = 5:1 and 3:1). In addition, analysis of variance (ANOVA) was conducted to compare the mean of the shape parameters. Results show that no significant difference exists in angularity of different types of aggregates. However, texture was found to be significantly different for the three types of aggregates considered in this study. It was observed that the granite aggregates have the highest texture followed by the limestone and the rhyolite aggregates. The study indicates that aggregates can have same angularity but can differ significantly in texture. The distribution of F&E particles shows that three aggregates had less than 10% and 20% of particles with maximum to minimum dimension ratios 5:1 and 3:1, respectively. It is expected that present study will be helpful in understanding the shape parameters for different types of aggregates. © 2013 American Society of Civil Engineers.

关键词： Aggregates

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SPICE modeling of piezoelectric energy harvesting device utilizing stress influence

SPICE modeling of piezoelectric energy harvesting device uti...

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2013 IEEE International Conference on Green Computing and Communications and IEEE Internet of Things and IEEE Cyber, Physical and Social Computing, GreenCom-iThings-CPSCom 2013

作者： Sonoda, Koji Fujita, Takayuki Kanda, Kensuke Maenaka, Kazusuke Katsumura, Hidenori Tamura, Masaya Kagata, Hiroshi Dept. of Electrical Engineering and Computer Science Graduate School of Engineering University of Hyogo 2167 Shosha Himeji Hyogo 671-2280 Japan Ecomaterials Development Center Corporate Engineering Division Panasonic Corporation 1006 Kadoma Kadoma City Osaka 571-8506 Japan

ISBN: (纸本)9780769550466

This paper presents a SPICE modeling of piezoelectric energy harvesting (PEH) device. We developed a wireless sensor system with the PEH device as an application. The PEH device is composed of a stainless cantilever, which has a piezoelectric film on the both side surface. The PEH device oscillates at resonance frequency when the tip of the cantilever is plucked. In SPICE simulator, an equation of motion of the cantilever is described to express a mass-spring-damper system by behavioral source. The stress of the piezoelectric film is computed by theoretical calculation and FEM analysis. Then, the stress, the piezoelectric coefficient d31, and the area of the film surface formulate the electrical charge. The output voltage is given by the charge varying and an inherent capacitance. The comparison between an analysis and an experiment is represented. The output power of theoretical calculation and measurement are 310 μJ and 920 μJ respectively has occurred by plucking once. We also developed a prototype system of WSN node utilizing the PEH device. The system transmits the temperature data a few times by plucking once. © 2013 IEEE.

关键词： SPICE

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