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A Novel Segmentation Algorithm Based on Bare Bones Particle Swarm Optimization and Wavelet Mutation

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A Novel Segmentation Algorithm Based on Bare Bones Particle ...

第二十九届中国控制会议

作者： ZHANG Wei 1,ZHANG Yuzhu 2.1.school of Automation and Electronic engineering,Qingdao {2. of science and Technology,Qingdao 2.6042.P.R.china2.Department of Electrical engineering and Automation,Luoyang Institute of science and Technology,Luoyang 47102.,P.R.china

Image segmentation is a difficult and challenging problem in the image *** bones particle swarm optimization(BBPSO)can not get good optimization performance because it easy to get stuck into local *** wavelet mutation when no fitness improvement is observed,a new segmentation algorithm based on wavelet mutation BBPSO(WMBBPSO)and fuzzy entropy is *** proposed algorithm uses WMBBPSO to explore fuzzy parameters of maximum fuzzy entropy,and to get the optimum fuzzy parameter combination,then obtain the segmentation *** to experiment results of the new algorithm compare with other two algorithms,the proposed algorithm performs good segmentation performance and low time *** can be use to real time and precision measure coal dust image.

关键词： Image Segmentation Threshold Segmentation Bare Bones Particle Swarm Optimization Fuzzy Entropy Wavelet Mutation

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平台罗经模糊加PID温控系统

天津大学学报（自然科学与工程技术版） 2004年第3期37卷 269-273页

作者：万健如刘春江孙洋建陈占先天津大学电气与自动化工程学院天津300072 北京科立信控制工程公司北京100192

根据平台罗经对温度控制系统的需要,在分析惯性平台机械结构特点的基础上,提出一种用模糊控制加PID控制算法实现三级温度控制方案.在完成相关硬件和软件设计及调试的基础上,试验表明该控制方案可行,温度控制达到了设计任务书精度指标要求.

关键词：惯性导航平台罗经模糊加PID控制温度控制陀螺仪

The Wave-Like Auroral Structure around Auroral Expansion Onset

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The Wave-Like Auroral Structure around Auroral Expansion Ons...

第十四届全国日地空间物理学术研讨会

作者： Tang Chao-Ling( school of Space science and Physics, {2. university at Weihai, Weihai, 2.42.9 )

We present the direct connection between the wave-like auroral structure around the time of auroral expansion onset and the ballooning mode waves in the near-Earth magnetotail. Based on the NASA mission time history of events and macroscale interactions during substorms （THEMIS） ground-based all-sky imagers, we show that around the time of auroral expansion onset, a wave-like auroral structure first has four luminosity peaks separated by 2.3° magnetic longitude （MLON）. Subsequently, the wave-like structure propagates in the azimuthally direction and an overall bright arc spans approximately 1 h magnetic local time （MLT）. The wavelength is estimated to be 12.-180 km. Finally, the noticeable poleward auroral expansion is observed. The ballooning mode waves are identified by two THEMIS probes in the near-Earth magnetotail. The observed wavelength of the ballooning mode waves is approximately equal to the order of the ion Larmor radius. The wavelength of 1500-3000 km in the near-Earth magnetotail is comparable with the wave-like auroral structure estimate. This study suggests that the ballooning mode waves might play a crucial role in auroral expansion onset, corresponding to the wave-like auroral structure in this study.

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Dynamic Soft Variable Structure Control for Singular Systems

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Dynamic Soft Variable Structure Control for Singular Systems

第三十届中国控制会议

作者： LIU Yun-Long~1,GAO Cun-Chen~(1,2.,MENG Bo~1,CONG Xin-Wei~2.1.College of Information science and engineering,Ocean {2. of china,Qingdao 2.6100,P.R.china 2.school of Mathematics science,Ocean {2. of china,Qingdao 2.6100,P.R.china

＜正＞Dynamic soft variable structure control（VSC） for singular systems is concerned in this *** definition of soft VSC and the design of its controller construction are *** an equivalent characterization,the stability of singular systems with dynamic soft VSC is *** singular dynamic soft variable structure controller is designed and the concrete algorithm on dynamic soft VSC is *** singular dynamic soft VSC which was developed for the purpose of intentionally decreasing system chattering,achieving high regulation rates and shorting arrival time,enhanced the dynamic quality of the control *** is illustrated the feasibility and validity of the proposed strategy by taking a submarine dive control model as a simulation example and an outlook on their auspicious further development is presented.

关键词： Nonlinear control Soft variable structure control Sliding mode Singular system Bilinear

Synthesis and structure of the gallium complex of K[Ga（Ⅲ）Cydta]·1.5H2.

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Synthesis and structure of the gallium complex of K[Ga（Ⅲ）...

第三届全国化学工程与生物化工年会

作者： Hong Xue, Jian Tong, Jun Wang, Zhang Xizan, Zhangfa Tong, school of Chemistry & Chemical engineering, Guangxi {2., Nanning, 530004, china school of Chemistry science & engineering, Liaoning {2., Shenyang, 110036, china

＜正＞The gallium belongs to rare scare metal as same family with indium and it shown to have anticancer properties and have radioactive[2.3]. Recently, Y.Z. Shen reported that some organogallium complexes and their application in the electroluminescence materials[4～6]. Thus it is very important to study the structures of complexes with various ligands. The crystal and molecular structures of the K[Ga（Ⅲ）Cydta]·1.5H2. （cydta = trans-1,2.cydohexanediaminetetraacetic acid） complex has been determined by single-crystal X-ray structure analysis. The crystal of the K[Ga（Ⅲ）Cydta]·1.5H2. complex belongs to monoclinic crystal system and P2.1）/C space group. The crystal data are as follows: a = 1.6507（3）nm, b = 1.3150（2.nm, c =8.52.8（13）nm, ? = 101.699（2.?, V= 1.8112.6）nm3, Z =4, M =478.15, Dc= 1.754g?cm-3, ? = 1.391mm-1 and F（000） = 980. The final R and wR values are 0.02.7 and 0.072. for 2.48 [I＞2.0?（I）] reflections, and 0.0394 and 0.0777 for all 3198 unique reflections, respectively. Structure analysis shows that the GaⅢ ion in the K [Ga （Ⅲ） Cydta]·1.5H2. complex anion has a six-coordinate structure with distorted octahedron, in which the cydta as a hexadentate ligand coordinates to the central GaⅢ ion with two N atoms and four O atoms of carboxylic groups.

关键词： GaⅢ cydta (trans-1,2.cyclohexanediaminetetraacetic acid) complexes structures.

EXISTENCE OF POSITIVE SOLUTION TO SUPERLINEAR SEMIPOSITONE SINGULAR m-POINT BOUNDARY VALUE PROBLEMS

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Annals of Differential Equations 2008年第4期24卷 490-497页

作者： Zhang Xingqiu (school of Mathematics, Liaocheng university, Liaocheng 2.2.59, {2.)

Sufficient conditions for the existence of positive solution to superlinear semi-positone singular m-point boundary value problem are given by cone expansion and compression theorem in norm type.

关键词： semipositone superlinear singular m-point boundary value fixed point theorem positive solution

Application of Two-Order Difference to Gap Statistic

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Transactions of Tianjin university 2008年第3期14卷 217-221页

作者：岳士弘王秀秀魏苗苗 school of Electrical engineering and Automation Tianjin University

Gap statistic is a well-known index of clustering validity, but its realization is difficult to be comprehended and accurately determined. A direct method is presented to improve the performance of the Gap statistic, which applies the two-order difference of within-cluster dispersion to replace the constructed null reference distribution in the Gap statistic. Hence, the realization of the Gap statistic becomes easy and is reformulated, and its uncertainty in applications is reduced. Also, the limitation of the Gap statistic is analyzed by two typical examples, that is, the Gap statistic is difficult to be applied to the dataset that contains strong-overlap or uneven-density clusters. Experiments verify the usefulness of the proposed method.

关键词： clustering validity Gap statistic data structure

新的燃烧工艺合成BaCe_(0.95)Y_(0.05)O_(3-δ)纳米粉

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中国稀土学报 2004年第6期22卷 795-799页

作者：孟波谭小耀张宝砚柳玉英杨乃涛东北大学理学院辽宁沈阳110004 山东理工大学化工学院山东淄博255049

应用基于pechini法改进的新的燃烧法合成了具有单一组成的BaCe0.95Y0.05O3-δ纳米粉体。用柠檬酸和乙二醇做金属离子螯合剂制得复合前驱物溶胶。在硝酸和氨水存在的条件下燃烧复合前驱物溶胶得到粒度小于100nm,形状均匀具有钙钛矿结构的... 详细信息

应用基于pechini法改进的新的燃烧法合成了具有单一组成的BaCe0.95Y0.05O3-δ纳米粉体。用柠檬酸和乙二醇做金属离子螯合剂制得复合前驱物溶胶。在硝酸和氨水存在的条件下燃烧复合前驱物溶胶得到粒度小于100nm,形状均匀具有钙钛矿结构的BaCe0.95Y0.05O3-δ纳米粉体。通过调节硝酸和氨水的用量可以控制粉体的粒度,柠檬酸和乙二醇的用量影响产物中碳酸盐的含量。

关键词：纳米粉钙钛矿型氧化物 BaCe0.95Y0.05O3-δ 燃烧合成稀土

THE COUNTER-JET FORMATION IN AN AIR BUBBLE INDUCED BY THE IMPACT OF SHOCK WAVES

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Journal of Hydrodynamics 2011年第5期23卷 562-569页

作者： BAI Li-xin XU Wei-lin LI Chao GAO Yan-dong Institute of Acoustics Chinese Academy of Sciences Beijing 100190 China State Key Laboratory of Hydraulics and Mountain River engineering Sichuan University Chengdu 610065China school of Electronic and Information engineering Liaoning Technical University Huludao 125105 China

The interaction of an air bubble （isolated in water or attached to a boundary） with shock waves induced by electric sparks is investigated by high-speed photography. The interaction is closely related to the counter-jet induced by the impact of shock waves. The formation of a counter-jet in an air bubble is related to the liquid jet formed in the same air bubble, but the mechanism is different with that of the counter-jet formation in a collapsing cavitation bubble. The formation of a counter-jet in an air bubble is related to discharge energy, air bubble size and radius of shock wave. With a given energy of the spark discharge, the formation of a counter-jet in an air bubble is related to δ / ε （the ratio of the dimensionless bubble-bubble distance to the dimensionless air bubble radius）. The counter-jet will only be produced when δ / ε is in the range of 1.2.2.2. The counter-jet in an air bubble is of an important nuclei-generating mechanism.

关键词： cavitation bubble shock wave counter-jet high-speed photography