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Appling Wavelet Analysis to Identify Image Ridge of Crack Width in The Coal Mining’s Roof Interior

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Appling Wavelet Analysis to Identify Image Ridge of Crack Wi...

INVERSION OF STRIKE-SLIP MOVEMENTS ALONG THE YARLUNG ZANGBO SUTURE ZONE, TIBET

2.07 IEEE International Workshop on Anti-counterfeiting,Security,Identification

作者： Xiaoyue Liu 1,2., Jiping Sun 1 , Sumin Feng 2.1) Country Importance Laboratory of Corf Resource and Safety Mining china University of Mining &Technology beijing 100080,{2.(2. school of Computer and Automatic control Hebei Polytechnic University, TangShan 100060,{2.

The slump of coal mining’s roof is one of the mine’s great calamities in underground exploitation, the influence factors of the roof unsteadiness is rather complex. The essence of crack evolution is rock transform. Although the crack of rock are different between each other, from the viewpoint of fracture mechanics, the crack creating always include 3 stages that turn into and grow slowly, expand and rupture instantly, at the same time, every stage of transform leaves a lot of transmute traces in the crack. Through observe experiment, the relationship between stress and crack can be obtained, but having no crack’s actual width. This paper applies the wavelet analysis to identify the image, which reflects the actual position of the inside crack. Though the CT, the image ridge can be checked out, and the relationship between the ridge and actual crack can be defined by the linear-return method.

关键词： rock crack wavelet analysis the image ridge detecting linear-return

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地学前缘 2000年第S1期7卷 111-112页

作者： Kobayashi Kenta 1, Matsuoka Atsushi 2. Yang Qun 3, Nagahashi Toru 1, Takei Masahiko 1, Zeng Qinggao 4,Wang Yujin 3 (1 graduate school of Science and Technology, Niigata University, Niigata 950\|2.81, Japan 2.Department of Geology, Niigata Uni

Meso\| and microstructural characteristics of cataclastic fault rocks developed in the Xialu chert are described. The Xialu chert represents pelagic and deep marine sediments (Middle Jurassic—Lower Cretaceous), and occupies the southern marginal part of the E—W trending Yarlung Zangbo suture zone. The apparent total thickness of siliceous deposits exceeds 1km. The current study is concentrated along the two measured sections, Xialu\|E and Xialu\|W. The Xialu\|E section is composed mainly of red chert associated with reddish purple siliceous mudstone and greenish gray mudstone. The beds steeply dip north or south. The 45m section studied is divided into three units (chert unit, chert\|siliceous mudstone unit, and melange unit from north to south). They are in fault contact with each other. In the southern half of the chert unit and the northernmost of the chert\|siliceous mudstone unit, a 15m thick cohesive cataclasite zone can be defined. The cataclasites are composed of chert fragments in a fine grained matrix, and deformed with jigsaw puzzle structures. The chert\|siliceous mudstone unit is made up of four slabs of chert\|siliceous mudstone sequence. Mesoscopic duplex zones in thickness from 1 to 3m are recognized at slab boundaries. Flat and ramp structure and associated P foliations, R1 shears, Y surfaces are developed. Shear spacing range from 1 to 10cm. The slip senses are dextral strike\|slip movement along these duplex zones. The cataclasite zone is cut by the duplex zone along the southern boundary.

关键词： Tibet Yarlung Zangbo Suture Zone Xialu chert structural ana lysis fault rocks strike slip inversion

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编组站计算机集成过程系统研究

铁道学报 2003年第4期25卷 5-9页

作者：魏瑜北方交通大学经济管理学院北京100044

通过对既有编组站自动化发展的总结,分析目前我国编组站自动化存在的问题,介绍国外计算机集成过程系统分支(CIPS)的发展概况,提出了利用CIPS系统实现编组站自动化的方案,供铁路编组站自动化研究人员参考。

关键词：编组站驼峰自动化计算机集成

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审美的神经机制

心理科学进展 2010年第1期18卷 19-27页

作者：王乃弋罗跃嘉董奇认知神经科学与学习国家重点实验室北京师范大学北京100875 教育心理与学校咨询研究所教育学部北京师范大学北京100875

审美能力是人类独有的高级功能。本文介绍了审美的认知神经模型,以及相关研究的实验范式,对各种刺激材料和任务进行了评价。回顾了近年来脑成像研究的主要进展,ERP和MEG研究证明审美包含发生在不同时段的不同加工阶段,与审美判断相关的... 详细信息

审美能力是人类独有的高级功能。本文介绍了审美的认知神经模型,以及相关研究的实验范式,对各种刺激材料和任务进行了评价。回顾了近年来脑成像研究的主要进展,ERP和MEG研究证明审美包含发生在不同时段的不同加工阶段,与审美判断相关的ERP成分为300～400ms额中部负成分和440～880ms头皮后部晚期正成分。fMRI研究发现与审美相关的主要脑区包括尾状核、框额部皮质和扣带前回。未来研究应进一步区分审美的不同方面的神经机制之间的差别,扩大刺激材料范围,更深入地探讨复杂因素,如文化因素对审美神经机制的影响。

关键词：审美神经机制脑成像研究神经美学

Research on the Steering Model Under Emergency

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Research on the Steering Model Under Emergency

Defects in La2.uO4 and La1.86Sr0.14CuO4 single crystals

第三十届中国控制会议

作者： CHEN Xue-Mei~1,WEI Zhong-Hua~2.GAO Li~1 1.school of Mechanical Engineering,beijing Institute of Technology,beijing 100081,P.R.china 2.Traffic Engineering Key Lab of beijing,beijing University of Technology,beijing 10002.,P.R.china

It is of important practical significance for the drivers under emergency to make accurate judgment and operation in *** this paper,Freecod data collection system,dynamic GPS are used in the research of driver’s braking operation under emergency in the Transportation Communication Trial *** the first place,the relationship between steering velocity and the distance from obstructions,as well as car speed,has been analyzed;in the second place,the model of the relationship has been established;at last,the model has been validated whose result means a lot for the management of the driver’s safety and traffic safety.

关键词： Driver behavior Emergency Steering Traffic safety

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工程科学学报 2005年第2期 244-244页

作者： YANG Wei, JIA Liansuo, CHEN Xiaolong, and WANG Cong Center of Materials Physics and Chemistry, school of sciences, Beihang University, {2. 100083, china Institute of Physics and Center for Condensed Matter Physics, Chinese academy of sciences, {2. 100080, china

La2.uO4 and La1.86Sr0.14CuO4 single crystals were obtained by traveling solvent floating zone method. There were five kinds of defects in these single crystals: cracks, inclusions, gas bubbles, unhomogeneous distribution of Sr2., and substructures. CH3COOH aqueous solution was used to etch these single crystals, and the etch-pit density was calculated. The formation mechanism of these defects was discussed. It is suggested that the good preparation of raw materials and the stringent growth conditions play an important role in growing high quality single crystals.

关键词： defects TSFZ method etch-pit density

环糊精接枝聚硅氧烷气相色谱固定相的手性拆分性能

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分析测试学报 2002年第3期21卷 31-33页

作者：张月琴傅若农张汉邦凌云国家地质实验测试中心北京100037 北京理工大学化工与材料学院北京100081

用环糊精接枝聚硅氧烷(二环[2.6_二_O_戊基_3_O_己烯基(_5)]五环[2.6_二_O_戊基_3_O_甲基_β_CD聚硅氧烷)作气相色谱固定相成功地拆分具有两个手性中心的物质———2.6_二乙酰氧基庚烷 ;

关键词：固定相环糊精接枝聚硅氧烷气相色谱手性拆分 2.6-二乙酰氧基庚烷

Product Positioning Game of Oligarchs in 3G Telecom Market

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Product Positioning Game of Oligarchs in 3G Telecom Market

咖啡酸修饰电极的电化学性质及其对肾上腺素的电化学研究

2.09中国控制与决策会议

作者： Chen Dehua~1,Tang Shoulian~2.1.school of Economics & Management,beijing University of Posts and Telecommunications,beijing 100876 2.school of Economics & Management,beijing University of Posts and Telecommunications,beijing 100876

＜正＞With the 3G-era coming,the competition in mobile communications market will increase *** author first analyzed the product differentiation play an important role to oligarchs’ profits,according to comparing the Cournot Model under with the Cournot Model which revised by Bowley *** this basis,the author analyzed the Stackelberg competitive equilibrium of three oligarchs in 3G market under cost asymmetry,given the competitive equilibrium of simultaneous determination or asynchronous determination in second stage,then compared with the competitive equilibrium results which revised by Bowley *** the author proposed that product differentiation strategy will be the inevitable choice for three oligarchs in 3G market *** put forward the differentiation strategy as consequence.

关键词： 3G Cournot Model Stackelberg Model Positioning Differentiation Bowley Model

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分析测试学报 2004年第5期23卷 60-62页

作者：邬春华吕元琦袁倬斌中国科学院研究生院应用化学研究所北京100039

研究了咖啡酸(CFA)修饰玻碳电极的制备和其电化学性质 ,测定了电极反应的动力学常数。实验结果表明 ,在 pH7.0的磷酸盐缓冲溶液中 ,肾上腺素(Ep)在该修饰电极上产生一灵敏的氧化峰 ,峰电流与Ep浓度在5.0×10 -6～1.0×10 -4mol/L范围内... 详细信息

研究了咖啡酸(CFA)修饰玻碳电极的制备和其电化学性质 ,测定了电极反应的动力学常数。实验结果表明 ,在 pH7.0的磷酸盐缓冲溶液中 ,肾上腺素(Ep)在该修饰电极上产生一灵敏的氧化峰 ,峰电流与Ep浓度在5.0×10 -6～1.0×10 -4mol/L范围内线性关系良好 ,检出限为7.0×10 -7mol/L。并对修饰电极反应的机理进行了初步探讨。修饰电极制备简单。

关键词：咖啡酸修饰电极肾上腺素