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The thesis adopts phantom tests with ROC (Receiver operating characteristic) curve analysis to compare cross correlation analysis method with coherence analysis method on Bruker MedSpec 3T system and according to the advantage of coherence analysis method to analysis conventional fMRI and resting-state fMRI.

论文中先采用仿体测试搭配ROC(Receiver operating characteristic)曲线分析比较相关系数法与同调性分析法在Bruker MedSpec 3T system上的表现再根据同调性分析法的优点分析功能性的影像与平静状态功能性影像。

Vesic's solutions to cavity expansion that include cylindrical cavity expansion and spherical cavity expansion are introduced. Then cylindrical cavity expansion theory is applied to study compaction effect of pile driving in saturated soil. Based on the results of conventional triaxial tests, a trilinear curve model is used to simulate stress-strain curve of strain-softening materials. Meanwhile, trilinear curves are also used to simulate curves of volumetric strain, minor principal strain and major principal strain. By using elasto-plastic theory, analytical solutions to cylindrical cavity expansion in strain-softening soil are presented. According to the mechanism of statically pressed pile driving, compaction effect of pile tip can be viewed as hemispheric cavity expansion. Therefore spherical cavity expansion theory is applied to obtain the solutions to stress, strain, displacement fields and final pressure. Resistance force of pile tip is calculated to estimate static pressure.

介绍了Vesic关于圆孔扩张问题的解答,其中包括柱形孔扩张问题和球形孔扩张问题,并应用柱形孔扩张理论分析了饱和软土中的沉桩挤土效应问题;在常规三轴试验成果的基础上,采用三折线模型模拟具有应变软化性质的岩土材料的应力应变关系曲线,分析了在应变软化土体中沉桩时桩周土的位移场、应力场和应变场的变化,得到了解析解答;分析了静压桩的沉桩机理,并利用球形孔扩张理论,视桩端处的挤土为半个球形孔的扩张,分析了桩端处土的位移场、应力场和应变场的变化,并根据最终扩张压力计算出沉桩时的桩端阻力,可作为压桩力的估算。

The retortion influence of base isolating building and base fixed building under horizontal earthquake effect is discussed, and the difference between them under the same condition is compared.

本文介绍了减震结构的动力特性,并计算了结构在地震作用下各层的位移、速度、加速度和剪力等地震反应;分析了结构在同时受到两个水平方向地震作用时结构的地震反应,从与抗震结构的对比中可见其优越性;选用了不同场地上的地震波模拟了各类场地上的地震作用,分析比较了不同的场地对建筑物减震效果的差异;分析了橡胶垫水平刚度的变化对动力分析结果所造成的影响,提出了在橡胶垫恢复力曲线中,按线性模型进行简化计算的条件;讨论了隔震垫的设置位置,比较了隔震垫设置在首层柱的底部和设置在其它位置的区别;分析了减震结构在连续经历多次地震时(即在地震后、较大余震作用下)是否仍然能够减震的问题;并对水平地震作用下,减震结构和抗震结构的受扭情况进行了讨论,比较了同等条件下两种结构的区别。

This article analyses the application conditions of freezing method, current research status and the problems in this field. It points that it's necessary to study deep freezing temperature field deeply and discusses the factors which influence the freezing wall such as soil's nature, moisture content, geological conditions, etc. It introduces the theory, process of freezing method, the distribution of temperature field of freezing method and key thermotics parameters influencing freezing temperature field. It simplifies the deep freezing temperature field model. Through ANSYS, this article founds the deep freezing temperature field model, and simulates the field on vary heat conductivities. It analyzes the results of ANSYS simulation, gains the theoretical value of thermometric holes which is needed by back-analysis. Using the simulation temperature and actual value, it gets the equivalent heat conductivity. Then it solves the deep freezing temperature field by the equivalent value, simulates the freezing wall development process and temperature change curve. Against the actual project, the results are favorable.

文中分析了冻结法施工的应用条件,目前对冻结法施工的研究现状和在此领域内存在的问题,指出了对深土冻结温度场进行深入研究分析的必要性;对影响冻结壁形成发展的因素如冻土土性、含水量、地质条件及施工方法等因素进行了论述;对冻结法施工的原理、过程,冻结法温度场的分布情况,影响冻结温度场分布的主要热学参数进行了综述;对深土冻土温度场模型进行了合理的简化,通过ANSYS大型有限元分析软件,建立了深土冻结温度场的模型,对不同导热系数情况下的深土冻结温度场进行了模拟;对ANSYS的模拟结果进行了定性的分析,通过对ANSYS结果的后处理取得了反分析时需要用到的测温孔理论温度值;经过对测温孔模拟温度值和实测温度值的分析,得到了冻结温度场的等效导热系数;使用等效导热系数对深土冻结温度场进行了求解,模拟了冻结壁发展情况和温度场中的温度变化曲线,用所得结果对比工程实际情况,取得了较好的效果。

This article analyses the application conditions of freezing method, current research status and the problems in thisiold. It, points that it" s necessary to study deep freezing temperature field deeply and discusses the factors which influence the freezing wall such as soil" s nature, moisture content, geological conditions, etc. It introduces the theory, process of freezing method, the distribution of temperature field of freezing method and key thermotics parameters influencing freezing temperature field, it simplifies the deep freezing temperature field model. Through ANSYS, this article founds the deep freezing temperature field model, and simulates the field on vary heat conductivities. It analyzes the results of ANSYS simulation, gains the theoretical value of thermometric holes which is needed by back analysis. Using the simulation temperature and actual value, it gets the equivalent heat conductivity. Then it solves the deep freezing temperature field by the equivalent value, simulates the freezing wall development process and temperature change curve. Against the actual project, the results are favorable.

文中分析了冻结法施工的应用条件,目前对冻结法施工的研究现状和在此领域内存在的问题,指出了对深土冻结温度场进行深入研究分析的必要性;对影响冻结壁形成发展的因素如冻土土性、含水量、地质条件及施工方法等因素进行了论述;对冻结法施工的原理、过程,冻结法温度场的分布情况,影响冻结温度场分布的主要热学参数进行了综述;对深土冻土温度场模型进行了合理的简化,通过ANSYS大型有限元分析软件,建立了深土冻结温度场的模型,对不同导热系数情况下的深土冻结温度场进行了模拟;对ANSYS的模拟结果进行了定性的分析,通过对ANSYS结果的后处理取得了反分析时需要用到的测温孔理论温度值;经过对测温孔模拟温度值和实测温度值的分析,得到了冻结温度场的等效导热系数;使用等效导热系数对深土冻结温度场进行了求解,模拟了冻结壁发展情况和温度场中的温度变化曲线,用所得结果对比工程实际情况,取得了较好的效果。

This paper are divided into five chapters, it includes: The first chapter introduces the conception and the characteristic of mineral resources, analyses the existing situation and the problems in the course of exploitation ,and opens out the reasons and the background of taxation and fee reform.The second chapter introduces the summary and the theory of the mineral resources taxation and fee, which contains the type、the trait and the general notion of resource taxation and fee、the value theory and the property right of mineral resources、the western communal article theory、the exterior theory and so on, to help us to understand the system deeply from the root of theory.The third chapter analyzes the differences about the taxation and fee institution between the home and abroad, as well as the inspiration for us.

论文正文共分五大部分,具体情况如下:第一部分研究分析了我国矿产资源现状及其开发利用情况与存在的问题,揭示了矿产资源税费制度改革研究的背景和原因;第二部分介绍了矿产资源税费概念和相关的理论基础,包括矿产资源价值理论、矿产资源财产权理论、西方的公共物品理论、"库兹涅茨"曲线理论等,从理论根源来深层次理解矿产资源税费制度的建立;第三部分进行了中外矿产资源税费制度的比较分析,包括中外矿产资源税费制度的具体介绍,分析了它们的不同及给我们的启示;第四部分研究分析了我国矿产资源税费制度存在的问题及其原因。

Furthermore, the data of falling weight deflectometer and the system identification method are jointly used in conjunction with the proposed procedure for estimating material properties from responses of multi-slabs on foundation. The analysis is based on quasi-static linear elastic, dynamic frequency domain fitting and dynamic time domain fitting.

然后,将落锤式弯沉仪所记录的输入和输出值时程曲线,根据系统识别原理和灵敏度分析理论,建立材料参数的拟静力反演分析方法、频域反演分析方法和时域反演分析方法。

Four important conclusions were drawn. First, the CMLE method is the most suitable pro-cedure for parameter estimation in 1-parameter model. Second, the test construction of TIPS guided by classical test theory will not be valid for obtaining reliable measures. Third, the systemmatic ICC presenting method presented the perfect item and ability latent traits for the results in CMLE findings. Fourth, the complicated analysis of reliability coefficient and likeli-hood parameters met the precise and accurate measures of latent traits in either integrated process skills or hypothesizing skills.

本研究四项主要结论如下:一是CMLE确为分析试题潜在结构的量化模式,本文之精心分析过程及分析技术本身即为重要的测验资料分析规范;二是TIPS全卷及试题与原始之评量目标对应关系并未如古典测验理论之分析结果;三是各试题之表徵曲线图示法,显示在同一难易度鉴别度下,CMLE估计法分析确实显现高、中、低能力群之试题及能力特质;四是由信度系数及概度参数分析精准地显示了全卷及形成假说技能之试题参数之潜在特质。

The main work of this paper: Firstly, Basing on the summarization and analysis of the walking mechanism, Parallel drive five-bar mechanism is applied for walking mechanism. And then the characteristic of the trail and positive kinematics as well as reverse kinematics are discussed. Secondly, the model of walking mechanism is established according to Parallel drive five-bar mechanism, and then a figure planning is designed for the foot-end trail. The characteristics of the parallel drive are emphasized to research in this paragraph by the method of insert value. At last, the simulation is performed in the ADAMS to compare the real result to the theoretical value. Thirdly, a sealed structure of a Quadruped Walking Robot is designed and established. The whole control system, including motor, sensor and control circuit, is sealed in the robot. Walking is derived in the way of the shaft driving and the dynamic torque sensor is used to the surrounding conditions of the robot's foot-end to be the foundation of the robot's control. At last, the applying principle of the dynamic torque sensor is researched in detail basing on the traditional sensor of the walking robot. Moreover, the principle is divided into several sorts to discuss. Finally, simulation and verification of the monitor principle are come through in the Mechanism of the Pro/Engineer.

论文的主要工作有:在对传统步行机构总结分析的基础上,提出将平面并联五杆机构应用于四足步行机器人的腿部结构,并对其轨迹特性、正运动学、逆运动学特性做了详细计算分析;依据平面并联五杆机构的模型,建立机器人步行机构的实体模型,对其足端的轨迹做了图谱规划,并利用插值法对并联驱动端的特性曲线作了研究,并在ADAMS中进行仿真,将结果与理论值相比较;然后设计了一套四足步行机器人密封装配结构设计方案,建立四足步行机器人单足结构、驱动以及传感器监测的三维实体模型,将机器人的整个控制系统,密封装配在步行机器人的机体中,通过轴传动来驱动步行机构实现步行,采用动态扭矩传感器监测步行机构的驱动关节受到的扭矩变化,从而获得四足步行机器人足端的周围情况,为步行机器人的控制方案奠定了基础;论文的最后在分析步行机器人传统控制传感器的基础上,详细分析了动态扭矩传感器的监测原理,并分几种情况分别分析了其监测原理,并在Pro/E的Mechanism模块中实现了监测原理的仿真与验证,最后给出了传感器监测信息与系统判断之间的关系。

Beijing Fatty Chicken, Langshan Chicken and Small-tailed Han Sheep were selected as experimental material. Fibroblast library was constructed through tissue confluency culture and cell freeze technology. Growth dynamics, genetic stability and contamination of of cross breeds etc.were detected through growth curve, chromosome analysis, isoenzyme analysis etc. Cloning and sequence of gene GPAT of Beijing Fatty Chicken was analyzed by cloning technology and software related.

本论文以北京油鸡、狼山鸡、小尾寒羊为研究对象,采用组织块贴壁培养法和细胞冷冻技术构建成纤维细胞库,采用生长曲线、染色体分析、同工酶分析等方法对细胞生长动态、遗传稳定性、种间交叉污染等进行检测;采用基因克隆技术和相关分析软件对北京油鸡GPAT基因进行克隆和序列分析。

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推荐网络例句

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。

The shamrock is the symbol of Ireland and of St.

三叶草是爱尔兰和圣特里克节的标志同时它的寓意是带来幸运。3片心形叶子围绕着一根断茎,深绿色。