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TENCON 2010 - 2010 IEEE Region 10 Conference最新文献

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Control of vortex chirality in polygonal nanomagnets 多边形纳米磁体涡旋手性的控制
Pub Date : 2010-12-01 DOI: 10.1109/TENCON.2010.5686386
M. Miyata, S. Yakata, M. Hara, H. Wada, T. Kimura
We have proposed a method for controlling the vortex chirality in a regular polygonal nanomagnet with an odd number of sides using an in-plane magnetic field. We confirmed the reliability of the proposed method in the triangle, pentagonal and heptagonal nanomagnets by using micromagnetic simulation. However, when the number of the sides is 9 or more, the chirality does not change systematically because of the insufficient in-plane shape anisotropy. Stabilizations of a single vortex in polygonal nanomagnets with an even number of sides have been also investigated.
提出了一种利用面内磁场控制奇数边正多边形纳米磁体涡旋手性的方法。通过微磁仿真验证了该方法在三角形、五角形和七角形纳米磁体上的可靠性。然而,当侧数为9或更多时,由于面内形状各向异性不足,手性不会发生系统变化。本文还研究了偶数边多边形纳米磁体中单涡的稳定性。
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引用次数: 1
Identification of DC corona generating SF6 decomposition gases adsorbed on CNT gas sensor using FTIR spectroscopy 碳纳米管气体传感器吸附产生SF6分解气体的直流电晕的FTIR光谱识别
Pub Date : 2010-12-01 DOI: 10.1109/TENCON.2010.5686640
Y. Martin, Zhenyu Li, T. Tsutsumi, J. Suehiro, K. Imasaka, S. Ohtsuka
It is important to detect decomposition of insulating gas SF6 caused by partial discharges for gas-insulated switchgear (GIS). In the previous result, the author developed a novel partial discharges sensing using carbon nanotube (CNT) gas sensor. In recently, an application of high voltage DC for long distance electric power transmission has been often used in various countries as the interconnection system and overload demand. In this study we applied the CNT gas sensor to detect partial discharges generated by high voltage DC. There was polarity profile for DC compared AC discharges. It was found, response of the sensor in the case of negative discharges was much higher than positive discharges under the same experimental condition. And the decomposed gases for each case were identified by FT-IR spectroscopy. The result indicated absorption peaks correspond to SF4 and SOF2 of positive discharges was much higher than that of negative discharges.
对气体绝缘开关设备进行局部放电引起的绝缘气体SF6分解检测是非常重要的。在之前的研究成果中,作者利用碳纳米管(CNT)气体传感器开发了一种新的局部放电传感器。近年来,高压直流电在远距离电力传输中的应用在各国经常被用作互联系统和过载需求。在这项研究中,我们应用碳纳米管气体传感器来检测高压直流产生的局部放电。与交流放电相比,直流放电具有极性分布。结果表明,在相同的实验条件下,负放电情况下传感器的响应远远高于正放电情况。并利用傅里叶变换红外光谱对每一种情况下的分解气体进行了鉴定。结果表明,正放电的SF4和SOF2对应的吸收峰远高于负放电的吸收峰。
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引用次数: 2
Tool support for domain analysis of the software specification in natural language 以自然语言对软件规范进行领域分析的工具支持
Pub Date : 2010-12-01 DOI: 10.1109/TENCON.2010.5686435
Y. Omori, K. Araki
Most software specifications are discussed on natural language among stakeholders. There is, however, a semantic gap between natural language and programming language, which sometime causes discrepancies between them and misunderstanding among stakeholders. Formal language compensates the gap so that realizes early verification in software development process. We developed a dictionary tool to support the translation from natural language to formal language. The tool provides functionalities those are easy registration of keywords to the dictionary and exhaustive marking of the keywords. The dictionary represents a map between equivalent keywords in natural language and formal language which gives defined semantics, and the tool enhance the coverage of the keywords in the formal specification. In short, the dictionary contains conceptual keywords and specific semantics in the problem; therefore, it corresponds to a domain of the system. A system generally belongs to multi problem domains and also contains multi sub domains, consequently some dictionaries should be dynamically alternated through the translation process. APIs related to dictionary operation are proposed and verified in this paper, and the dictionary class is introduced to map the relation among domains.
大多数软件规范是在涉众之间用自然语言进行讨论的。然而,自然语言和编程语言之间存在语义差距,有时会导致它们之间的差异和利益相关者之间的误解。形式语言弥补了这一缺陷,从而实现了软件开发过程中的早期验证。我们开发了一个字典工具来支持从自然语言到形式语言的翻译。该工具提供的功能包括将关键字轻松注册到字典和对关键字进行详尽标记。字典表示自然语言和形式语言中等效关键字之间的映射,给出了定义的语义,该工具增强了形式规范中关键字的覆盖范围。简而言之,字典包含问题中的概念关键词和特定语义;因此,它对应于系统的一个定义域。一个系统通常属于多个问题域,也包含多个子域,因此有些字典在翻译过程中需要动态交替。本文提出并验证了与字典操作相关的api,并引入字典类来映射域间的关系。
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引用次数: 1
Cooperative MPR selection to reduce topology control packets in OLSR 协同MPR选择减少拓扑控制报文
Pub Date : 2010-12-01 DOI: 10.1109/TENCON.2010.5686013
Kenji Yamada, T. Itokawa, T. Kitasuka, M. Aritsugi
In this paper, we try to reduce the amount of control traffic of the optimized link state routing protocol (OLSR). OLSR is a proactive routing protocol for mobile ad-hoc networks (MANETs). OLSR is known well as a low control traffic routing protocol, since it adopts multipoint relays (MPRs). MPRs concept significantly reduces the number of broadcast messages during the flooding process. Although MPR concept is optimal for each node to transmit its messages to all two hop neighbors, we show there are still redundant control messages which can be piggybacked with other control messages in dense networks. This redundancy is caused by the selection procedure of MPRs, which run on each node independently of its neighbor nodes. In this paper, we propose a cooperative MPR selection procedure, to increase messages which are piggybacked into a single control packet. Through simulation, we demonstrate that the proposed cooperative MPR selection procedure reduces the number of routing packets in high-density network, and network reachability is kept similar to that of the conventional MPR selection procedure.
在本文中,我们试图减少优化的链路状态路由协议(OLSR)的控制流量。OLSR是移动自组织网络(manet)的主动路由协议。OLSR是一种低控制流量路由协议,因为它采用了多点中继(MPRs)。MPRs概念显著减少了泛洪过程中广播消息的数量。尽管MPR概念对于每个节点将其消息发送到所有两个跳邻居是最优的,但我们表明在密集网络中仍然存在冗余控制消息,这些控制消息可以与其他控制消息一起承载。这种冗余是由mpr的选择过程引起的,mpr在每个节点上独立于其邻居节点运行。在本文中,我们提出了一个合作的MPR选择过程,以增加承载到单个控制包中的消息。仿真结果表明,本文提出的协同MPR选择过程减少了高密度网络中路由数据包的数量,并保持了与传统MPR选择过程相似的网络可达性。
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引用次数: 35
Keynote speech I: Fluctuation control for plasma nanotechnologies 主题演讲一:等离子体纳米技术的波动控制
Pub Date : 2010-12-01 DOI: 10.1109/TENCON.2010.5685920
M. Shiratani, K. Koga, G. Uchida, N. Itagaki, K. Kamataki
Recent progress in nano-materials has made them attractive for an increasing number of their applications such as electronics, medical components, fillers, catalysts, and fuel cells. Nanomaterials need structures and components which exhibit novel and significantly improved physical, chemical and biological properties, because of their nanoscale size, and hence fabrication of nanomaterials by bottom-up processes as well as that by top-down ones are required. A wide variety of nano-material and nano-system fabrication methods are required to be developed to realize complex nano-world. Plasma-based fabrication of nanomaterials and nanostructures is widely employed for top-down processes such as ULSI fabrication as well as bottom-up processes such as carbon nanotube production. We are exploring frontier science of interactions between plasmas and nano-interfaces by focusing on novel features such as fluctuations of interactions due to the nanometer scale. Plasma processing based on the science realizes highly precise top-down processes by suppressing fluctuations and well controlled self-organized bottom-up processes by controlling fluctuations. We aim to bring about an explosive development of fabrication technologies of nanomaterials and nanostructures.
纳米材料的最新进展使其在电子、医疗部件、填料、催化剂和燃料电池等领域的应用越来越广泛。纳米材料由于其纳米级的尺寸,需要具有新颖和显著改善的物理、化学和生物特性的结构和组件,因此需要自下而上和自上而下的纳米材料制造工艺。为了实现复杂的纳米世界,需要发展各种各样的纳米材料和纳米系统的制造方法。基于等离子体的纳米材料和纳米结构制造广泛应用于自顶向下的工艺,如ULSI制造,以及自底向上的工艺,如碳纳米管生产。我们正在探索等离子体和纳米界面之间相互作用的前沿科学,重点关注纳米尺度下相互作用的波动等新特征。基于科学的等离子体加工通过抑制波动实现了自上而下的高精度过程,通过控制波动实现了自下而上的可控自组织过程。我们的目标是带来纳米材料和纳米结构制造技术的爆炸性发展。
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引用次数: 0
Deposition profiles of microcrystalline silicon films using multi-hollow discharge plasma CVD 多空心放电等离子体CVD沉积微晶硅薄膜的研究
Pub Date : 2010-12-01 DOI: 10.1109/TENCON.2010.5686679
T. Matsunaga, Y. Kawashima, K. Koga, K. Nakahara, W. M. Nakamura, G. Uchida, N. Itagaki, D. Yamashita, Hidefumi Matsuzaki, M. Shiratani
We have studied deposition profiles of micro crystalline silicon (μc-Si) films using a multi-hollow discharge plasma CVD method, by which contribution of SiH3 and H to deposition varies with the distance between the substrate and discharge region. Under high pressure (6 Torr) depletion condition, crystalline films were deposited in a region near the discharges and the higher crystallinity was obtained at the closer to the discharges. Films of 0.6 in crystallinity ΦC were deposited in a very narrow region between 4 and 5 mm from the discharges. The process window of good quality μc-Si films is very narrow. These results indicate the multi-hollow discharge plasma CVD method allows us to optimize deposition conditions easier than the conventional deposition methods.
采用多空心放电等离子体CVD方法研究了微晶硅(μc-Si)薄膜的沉积特征,SiH3和H对沉积的贡献随衬底与放电区域的距离而变化。在高压(6 Torr)耗尽条件下,晶体膜沉积在靠近放电的区域,越靠近放电,结晶度越高。结晶度为0.6 ΦC的薄膜沉积在距离放电点4到5毫米的非常狭窄的区域。制备高质量μc-Si薄膜的工艺窗口非常窄。这些结果表明,与传统的沉积方法相比,多空心放电等离子体CVD方法可以更容易地优化沉积条件。
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引用次数: 0
High-frequency signal transmission characteristics of coplanar waveguides with cone bump interconnections 锥凸互连共面波导的高频信号传输特性
Pub Date : 2010-12-01 DOI: 10.1109/TENCON.2010.5686711
A. Ikeda, K. Kajiwara, N. Watanabe, T. Asano
We evaluated high frequency signal transmission characteristics of coplanar waveguides fabricated using cone bump interconnections on flip-chip bonded surfaces. The signal insertion loss (S21 parameter) increased with the number of bump interconnections. At 40 GHz, the signal insertion loss due to the bump interconnections was 0.017 dB / bump. This value was small enough for application to most radio-frequency devices. Besides, the bump interconnections did not alter the characteristic impedance of the waveguide from the designed even at 40 GHz. The results indicate that the cone bump offers high-frequency signal data transmission lines for chip-stack integration of LSIs.
我们评估了在倒装晶片粘合表面上使用锥凸互连制作的共面波导的高频信号传输特性。信号插入损耗(S21参数)随着凹凸连接次数的增加而增加。在40 GHz时,由于凹凸互连引起的信号插入损耗为0.017 dB /凹凸。这个值足够小,适用于大多数射频设备。此外,即使在40ghz时,凹凸互连也不会改变设计波导的特性阻抗。结果表明,锥突为lsi的芯片堆栈集成提供了高频信号数据传输线。
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引用次数: 1
Development of a new chemical synthesis method with pulsed discharge plasma in sub- and supercritical fluids 亚、超临界流体中脉冲放电等离子体化学合成新方法的发展
Pub Date : 2010-12-01 DOI: 10.1109/TENCON.2010.5686632
M. Sasaki, Wahyudiono, T. Kiyan, H. Akiyama, M. Goto, Yousuke Suga, Toshiyuki Watanabe
In this work, reactions of phenol were carried out in supercritical argon (critical temperature, Tc: 150.7 K, critical pressure, Pc: 4.8 MPa) with pulsed discharge plasma to understand reaction characteristics and to evaluate possibility that this technique will be applicable for a new “green” polymerization technique of functional polymeric materials. Experiments in subcritical water or in supercritical argon were conducted through the operation of a specially-designed SUS316 batch-type reactor (inner volume: 900 mL) at 373–523 K and 1–25 MPa, or at 303–373 K and 5–15 MPa, respectively. The electrode configuration consisted of a point (negative electrode) and a planar surface (positive electrode), which were made of tungsten and stainless steel, respectively. The distance between the two electrodes was fixed at 1 mm. Two kinds of power supply devices (BPFN and MPC) were employed. As results using a BPFN, it was found that reaction behavior in subcritical water at 373–523 K, 1–25 MPa with less than 4000 times pulsed discharges basically similar to that in supercritical argon, but polymerized products of phenol could be obtained under larger pulsed discharge times like 5000 times at identical conditions. In contrast, phenol could be converted into hydroquinone but no polymerized product could be confirmed in supercritical argon. On the surface of the electrode used, it was found that phenol could be converted into amorphous graphite oxide with pulsed discharge plasma treatment in supercritical argon. This finding will be expected as a new method for the carbon-based functional materials in supercritical argon.
本研究在超临界氩(临界温度,Tc: 150.7 K,临界压力,Pc: 4.8 MPa)和脉冲放电等离子体中对苯酚进行了反应,以了解反应特性,并评估该技术应用于功能高分子材料“绿色”聚合新技术的可能性。实验分别在373-523 K、1-25 MPa和303-373 K、5-15 MPa条件下,在亚临界水和超临界氩气条件下,通过专门设计的SUS316间歇式反应器(内容积900 mL)进行。电极结构由点(负极)和平面(正极)组成,分别由钨和不锈钢制成。两个电极之间的距离固定为1mm。采用了两种供电装置(BPFN和MPC)。结果表明,在373-523 K, 1-25 MPa的亚临界水中,脉冲放电次数小于4000次,反应行为与超临界氩气中的反应行为基本相似,但在相同条件下,脉冲放电次数大于5000次,可以得到苯酚的聚合产物。在超临界氩气条件下,苯酚可以转化为对苯二酚,但没有聚合产物。在超临界氩气条件下,脉冲放电等离子体处理可将苯酚转化为无定形氧化石墨。这一发现有望为超临界氩气中碳基功能材料的制备提供一种新方法。
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引用次数: 0
Motions obtaining of multi-degree-freedom underwater robot by using reinforcement learning algorithms 基于强化学习算法的多自由度水下机器人运动获取
Pub Date : 2010-12-01 DOI: 10.1109/TENCON.2010.5686136
Yongfeng Han, H. Kimura
This paper deals with motions obtaining of an underwater robot arm which have multi-degree of freedom by using reinforcement learning algorithms. A natural gradient Actor-Critic algorithm which uses Eligibility Traces is applied to the robot arm. In this algorithm, motion planning problems are modeled as finite state Markov decision processes. The robot arm is developed to have 4 joints, each joint consists 1 servo motor. The experiment results show the robot arm successfully learning to swim by feasible learning steps.
本文用强化学习算法研究了多自由度水下机械臂的运动获取问题。将一种自然梯度Actor-Critic算法应用于机械臂。该算法将运动规划问题建模为有限状态马尔可夫决策过程。机器人手臂被设计成有4个关节,每个关节由1个伺服电机组成。实验结果表明,该机器人手臂通过可行的学习步骤成功地学会了游泳。
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引用次数: 2
Image and video clipping by weighted histogram intersection minimization 图像和视频的加权直方图交集最小化裁剪
Pub Date : 2010-12-01 DOI: 10.1109/TENCON.2010.5686033
K. Inoue, K. Hara, K. Urahama
We propose a method for clipping a rectangular region from an image by minimizing a weighted intersection of two color histograms which are constructed with pixels included in the inside and the outside of the rectangular region. Furthermore, we extend the clipping method for images to that for videos. Experimental results show that the proposed method can clip the regions of objects from images and remove the regions of backgrounds.
我们提出了一种从图像中裁剪矩形区域的方法,该方法通过最小化两个颜色直方图的加权相交,这两个直方图由矩形区域的内部和外部包含的像素组成。此外,我们将图像的裁剪方法扩展到视频的裁剪方法。实验结果表明,该方法可以有效地从图像中截取目标区域,去除背景区域。
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引用次数: 1
期刊
TENCON 2010 - 2010 IEEE Region 10 Conference
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