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International conference on Planarization/CMP technology

作者： Yasuhisa Sano Kousuke Shiozawa Syuhei Kurokawa Koki Oyama Haruo Sumizawa Toshiro doi Hideo Aida Tadakazu Miyashita Kazuto Yamauchi Graduate School of Engineering Osaka University Suita Osaka JAPAN Graduate School of Engineering Kyushu University Fukuoka JAPAN NJC Institute of Technology Namiki Precision Jewel Co. Ltd. Tokyo JAPAN R&D Department Fujikoshi Machinery Corp. Nagano JAPAN KASTEC Kyushu University Kasuga Fukuoka JAPAN

We proposed a high-efficiency planarization method that combines two processes, namely mechanical polishing, wherein the convex part of the work surface is converted to a damaged layer, and atmospheric-pressure plasma etching, wherein the damaged convex area is efficiently removed. For the effective generation of the damaged layer, we used cross-sectional transmission electron microscopy to investigate machining conditions using SiC substrates. results revealed that the thickness of the damaged layer increased with the processing pressure, but it was insensitive to the processing time and rotation speed. By optimizing the machining conditions, a decreasing rate of the step height approximately seven times larger than its value during simple mechanical polishing was obtained using combined processing.

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Estimating speaking rate in spontaneous discourse

Estimating speaking rate in spontaneous discourse

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Asilomar conference on Signals, Systems and computers

作者： Yishan Jiao Visar Berisha Ming Tu Timothy Huston Julie Liss Department of Electronics and Communications Engineering Tampere University of Technology Huawei Technologies Oy (Finland) Co. Ltd Finland R&D Center

ISBN: (纸本)9781467385770

In this paper we consider the problem of estimating the speaking rate directly from the speech waveform. We propose an algorithm that poses the speaking rate estimation problem as a convex optimization problem. In contrast to existing methods, we avoid the more difficult task of detecting individual syllables within the speech signal and we avoid heuristics like thresholding a loudness function. The algorithm was evaluated on the ICSI Switchboard spontaneous speech corpus and a speech corpus obtained from publicly-available interviews on Youtube.

关键词： Speaking Voice Signal YouTube Speech Heuristics Spontaneous convex function

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common-mode noise reduction on broadside-coupled delay line

Common-mode noise reduction on broadside-coupled delay line

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IEEE Symposium on Electromagnetic compatibility and Signal Integrity

作者： ding-Bing Lin Chung-Pin Huang Hsin-Nan Ke Wen-Sheng Liu Department of Electronic Engineering Taipei Tech (National Taipei University of Technology) Taipei City Taiwan Department of No.1 EMC R&D Center PEGATRON Corporation Taipei City Taiwan Department of Lab. and C.A.E. WIESON Technologies Co. Ltd. New Taipei City Taiwan

ISBN: (纸本)9781479919949

conventional edge-coupled differential delay lines are becoming popular choice on high-speed connection, which depend on their balanced property and superior immunity to noise interference. Although edge-coupled differential delay lines with differential signaling have many advantages, such as high noise immunity and low noise radiation, yet common-mode noise are becoming higher and higher resulting data rate approaches GHz level. Hence, broadside-coupled differential delay lines are proposed for common-mode noise reduction in this research. Simulation results show that time-domain common-mode noise on broadside-coupled serpentine and spiral delay lines can reduce 79 % and 84.57 % compared with edge-coupled serpentine and spiral delay lines. Similarly, frequency-domain differential to common-mode conversions have significant reduction at the frequency band of interest.

关键词： delay lines Noise Spirals routing Time-domain analysis Crosstalk Noise reduction

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A Novel Hysteresis Model of Magnetic Field Strength determined by Magnetic Induction Intensity for Fe-3% Si Electrical Steel Applied in Cigarette Making Machines

Journal of Materials

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Journal of Materials 2016年第1期2016卷

作者： Hao Wang Jianbo Zhan Zhenhua Yu Ying Zhang Jiang Yu Yongfa Gui Tingting Yu Jiao Xie Hongkui Zhang Yafeng Ji Na Zan rongrong Fu deniz Perin R&D Center China Tobacco Yunnan Industrial Co. Ltd. Kunming Yunnan 650231 China Fushun Branch of China Coal Research Institute Fushun 113001 China Heavy Industry Engineering Center of China Ministry of Education Taiyuan University of Science and Technology Taiyuan Shanxi 030024 *** AVIC Commercial Aircraft Engine Co. Ltd. Shanghai 200241 China Measurement Technology and Instrumentation Key Laboratory of Hebei Province Yanshan University Qinhuangdao Hebei 066004 *** Department of Physics Balıkesir University 10145 Balıkesir Turkeybalikesir.edu.tr

Hysteresis characteristics of grain-oriented electrical steel were studied through the hysteresis loop. Existing hysteresis fitting simulation methods were summarized, and new Fe-3% Si grain-oriented electrical steel hysteresis loop model was proposed. Undetermined coefficients of the magnetic field intensity and magnetic flux density were determined by both the fixed angle method and the least squares method, and the hysteresis loop model was validated with high fitting degree by experimental data.

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Novel Gas Barrier SiOC coating to PET Bottles through a Hot Wire CVd Method

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Journal of Polymers 2016年第1期2016卷

作者： Masaki Nakaya Kenji Kodama Shigeo Yasuhara Atsushi Hotta Research Laboratories for Packaging Technologies R&D Department Kirin Co. Ltd. Technovillage 3F 1-17-1 Namamugi Tsurumi-ku Yokohama 230-8628 Japan Japan Advanced Chemicals Ltd. SIC-3 3114 1880-2 Kamimizo Chuo-ku Sagamihara-shi Kanagawa 252-0243 Japan Department of Mechanical Engineering Faculty of Science and Technology Keio University 3-14-1 Hiyoshi Kohoku-ku Yokohama 223-8522 Japankeio.ac.jp

In an attempt to enhance the gas barrier enhancement of plastic containers such as poly(ethylene terephthalate) bottles, a novel method was found using a hot wire CVd technique, where tantalum wire is heated and exposed to a gas flow of vinyl silane. The resultant SiOC thin film was confirmed to characteristically contain Si-Si bonds in its surface and demonstrate a remarkably and highly practical decrease of the permeation of various gas through poly(ethylene terephthalate) bottles.

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Buoyancy effect on heat transfer in rotating smooth square U-duct at high rotation number

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Propulsion and Power research 2014年第3期3卷 107-120页

作者： Yang Li Guoqiang Xu Hongwu deng Shuqing Tian National Key Laboratory of Science and Technology on Aero-Engine Aero-Themmodynamics&Collaborative Innovation Center of Advanced Aero-Engine Beihang UniversityBeijing 100191China R&D Center Dept of Discipline Engineering AVIC Commercial Aircrafit Engine CoLtdShanghai 201108China

The buoyancy effect on heat transfer in a rotating,two-pass,square channel is experimentally investigated in curent *** classical copper plate technique is performed to measure the regional averaged heat transfer *** order to perform a fundamental research,all turbulators are removed *** approaches of altering Buoyancy numbers are selected:varying rotation number from 0 to 2.08 at reynolds number ranges of 10000 to 70000,and varying inlet density ratio from 0.07 to 0.16 at reynolds number of *** thus,Buoyancy numbers range from 0 to 12.9 for both *** to the experimental results,the relationships between heat transfer and Buoyancy numbers are in accord with those obtained under different rotation *** both leading and trailing surface,a critical Buoyancy number exists for each X/d *** the critical point,the effect of Buoyancy number on heat transfer is limited;but after that,the Nusselt number ratios show different increase *** the same rotation number,higher wall temperature ratios with its corresponding higher Buoyancy numbers substantially enhance heat transfer on both *** the critical exceed-point that heat transfer from trailing surface higher than leading surface happens at the same Buoyancy number for different wall temperature ratios in the second ***,the stronger buoyancy effect promotes heat transfer enhancement at high rotation number condition.

关键词： Buoyancy effect Heat transfer Wall temperature ratio rotating U-duct High rotation number

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A Self‐Healing Aqueous Lithium‐Ion Battery

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Angewandte Chemie 2016年第46期128卷

作者： Yang Zhao Ye Zhang Hao Sun Xiaoli dong Jingyu Cao Lie Wang Yifan Xu Jing ren Yunil Hwang In Hyuk Son Xianliang Huang Yonggang Wang Huisheng Peng State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science and Laboratory of Advanced Materials Fudan University Shanghai 200438 China Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Fudan University Shanghai 200438 China Energy Materials Lab Materials Research Center Samsung Advanced Institute of Technology Samsung Electronics Co. LTD. 130 Samsung-ro Suwon-si Gyeonggi-do 443803 South Korea Samsung R&D Institute China Beijing 100028 China

Flexible lithium‐ion batteries are critical for the next‐generation electronics. However, during the practical application, they may break under deformations such as twisting and cutting, causing their failure to work or even serious safety problems. A new family of all‐solid‐state and flexible aqueous lithium ion batteries that can self‐heal after breaking has been created by designing aligned carbon nanotube sheets loaded with LiMn 2 O 4 and LiTi 2 (PO 4 ) 3 nanoparticles on a self‐healing polymer substrate as electrodes, and a new kind of lithium sulfate/sodium carboxymethylcellulose serves as both gel electrolyte and separator. The specific capacity, rate capability, and cycling performance can be well maintained after repeated cutting and self‐healing. These self‐healing batteries are demonstrated to be promising for wearable devices.

关键词： Flexible Elektronik Kohlenstoffnanoröhren Lithiumionenbatterien Nanotechnologie Selbstheilende Polymere

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Parallel-operated single-stage flyback-type single-phase solar micro-inverter

Parallel-operated single-stage flyback-type single-phase sol...

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International conference on Intelligent Green Building and Smart Grid (IGBSG)

作者： Ching-Ming Lai Ming-Ji Yang Wei-Chi Liu Depart. Electrical Engineering Chung Yuan Christian University Depart. Vehicle Engineering National Taipei University of Technology R&D Division UPE-Power Technology Co. Ltd

In this paper, a parallel-operated single-stage flyback-type single-phase solar micro-inverter is studied. A discontinuous conduction mode (dCM) flyback converter is a well-known cost-effectiveness solution for distributed low-voltage solar inverter system since the least number of components. However, for high power grid-connected applications, the dCM flyback converter has the following disadvantages, which limit the efficiency of the converter: 1) high switching losses due to hard-switching; 2) the high copper/iron transformer losses due to high flux excursions in the coupled-inductor; 3) high MOSFET r ds(on) conduction losses due to high rMS and peak currents in the design. In this paper, a three-module parallel-operated variable-frequency boundary conduction mode (BCM) quasi-resonant (Qr) flyback converter topology with low-voltage turn-on and load-sharing capabilities is presented. A prototype with input power rating of 300W and output power rating of 280W/220Vac is constructed. Experimental results verify the feasibility of the developed micro-inverter which delivers greater energy harvest, higher reliability.

关键词： Inverters MOSFET Topology Prototypes Inductance Capacitors

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Implementation of continuous integration and automated testing in software development of smart grid scheduling support system

Implementation of continuous integration and automated testi...

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International conference on Power System technology (POWErcoN)

作者： Jixiang Lu Zhihong Yang Junxia Qian R&D Center NARI Technology Co. Ltd. Nanjing China Power Supply System Department Jiangsu Keneng Electric Power Engineering Consulting Co. Ltd. Nanjing China

When smart grid scheduling support system (d5000 system) was developed, the development team ran across tough issue that the system is difficult for integration and becomes unstable after integration due to the complexity. To resolve the problem, the author made research and introduced continuous integration and automated testing approach on d5000 system development. This paper provides the concept and advantages of continuous integration, and analyzes the necessity for continuous integration. It also describes automated testing for quality improvement with code static analytics, automated unit testing, and automated function testing; This paper gives a case study to deploy continuous integration and automated testing on d5000 system development which resolves quality and integration issues effectively and efficiently.

关键词： Testing Software Servers Graphical user interfaces Market research Smart grids Java

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A switching frequency reduction and a mitigation of voltage fluctuation of modular multilevel converter for HVdC

A switching frequency reduction and a mitigation of voltage ...

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IEEE Energy conversion congress and Exposition, ECCE

作者： Hak-Jun Lee Jae-jung Jung Seung-Ki Sul Corporate Technology R&D Center LSIS Co. Ltd. Anyang-si Republic of Korea Department of Electrical and Computer Engineering Seoul National University Seoul Republic of Korea

A switching loss of Modular Multilevel converter(MMC) might increase drastically in HVdC system because the number of sub-module(SM) is proportional to the dC-link voltage. And, a special strategy for reducing switching frequency has been significant research issue in terms of overall operating efficiency of MMC for HVdC system. The voltage fluctuation of capacitor in SM, however, increases as the switching frequency decreases, and the capacitor with large capacitance which is the main portion of equipment cost for SM is required to mitigate the voltage fluctuation. In this paper, the switching frequency reduction strategy is proposed using the sorting method with a virtual capacitor voltage of individual SMs. In addition, this paper presents the 2 nd order harmonic circulating current injection to suppress the voltage fluctuation. By numerical loss analysis, it is identified that the 2 nd order harmonic current injection does not incur severe additional loss. Thanks to the harmonic current injection, the capacitance of SM capacitor could be reduced by 33% at the cost of only 0.05 % efficiency degradation in the given simulation condition. To evaluate the effectiveness of the proposed strategies, the computer simulation with 400 kV, 400MA, 221-level MMC has been performed and the results are discussed. Additionally, validity of the proposed strategies has been verified by 7-level down scaled prototype experimental setup.

关键词： Capacitors Switching frequency Switches Sorting Harmonic analysis Voltage fluctuations Fluctuations

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