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A model for finding the cryptic period of hydrological time series is proposed. The functions of the model include to apply logarithm transformation for making the sequence more stationary, to construct a corresponding auto-regression model for reducing the herteroskedasticity of residual, to determine the component of the prime period by periodogram analysis.

本文在讨论水文时序平稳性和异方差性的基础上，提出了检测水文时序隐含周期的模型，即对水文时序设计对数变换序列，提高序列的平稳性；建立相应的自回归模型降低残差的异方差性；通过对所得平稳序列进行周期图分析确定可能的主周期分量。

Model for finding the cryptic period of hydrological time series is proposed. The functions of the model include to apply logarithm transformation for making the sequence more stationary, to construct a corresponding auto-regression model for reducing the herteroskedasticity of residual, to determine the component of the prime period by periodogram analysis.

bstract 本文在讨论水文时序平稳性和异方差性的基础上，提出了检测水文时序隐含周期的模型，即对水文时序设计对数变换序列，提高序列的平稳性；建立相应的自回归模型降低残差的异方差性；通过对所得平稳序列进行周期图分析确定可能的主周期分量。

Here are some examples of the requirements specified for this case study:(1) avoid conflicts among phlebotomist's tasks caused by the room layout (from the HTA model and the spatial layout model),(2) reduce the number of devices and containers to save space, and (3) improve recording and transferring information accurately to other sections of the hospital (from the information flow model).

这是在这个案例中的一些特殊需求的例子：（1）避免在医师任务和房间内空间规划上发生冲突（从HTA模型和空间规划模型得出），（2）减少设备和容器的数量以节约空间，（3）改进记录和精确的转化信息到别的地区的医院。

On the basis of deeply understanding of the reform of physical education and the essence of expansion teaching, the thesis has analysis the necessity, the possibility and the defects about Introducing expansion teaching model into physical education class and tried to put a new physical education model—physical expansion teaching model.

在深入了解体育教学改革与拓展训练实质的基础之上，对体育课拓展教学的必要性、可能性、不足之处进行了分析，试图提出一种新的体育教学模式——体育拓展教学模式。

The research results show as follows. As plastic deformation increases, the Young's modulus of material continuously changes. This variation law is able to be described using a piecewise linear function .Hardening model and whether the variation is considered or not make great effet on springback prediction. It is proved that the springback prediction result which adopts the elastic-plastic constitutive model based on INLK hardening model and the variation of Young's modulus is considered, is more close to experimental result. After the sheet metal undergoes multiple bending, the corner radius and bending height also affect springback greatly.But the effect trend is different. At the same time, the reliability of springback research using numerical simulation is proved.

研究结果表明：材料弹性模量随塑性变形的变化是不断变化的，该变化规律可用分段线性函数进行描述；强化模型及考虑弹性模量变化与否对回弹预测有很大的影响，基于INLK强化模型和考虑弹性模量变化的弹塑性本构模型对回弹的预测结果与试验最接近；多次弯曲中圆角半径与弯曲高度对板料变形后的回弹有较大影响，但影响趋势不同；证明了数值模拟方法对回弹研究的可靠性。

The work in this thesis could be concluded into four parts: 1. Theoretical analysis and numerical simulation are finished among three type of piecewise smooth rub models which include dual-linear rigid model, Hertz model and nominal rigid model.

本论文的主要工作分成以下四部分：第一部分：对三种分段光滑碰摩模型，即双线性刚度模型、Hertz模型和当量刚度模型进行了理论分析和数值仿真对比，确定了Hertz模型的优势地位。

Objective Comparison study of behavioral and histological changes between pilocarpine induced epilepsy model and pentylenetetrazole kindling model in the neonatal rat,to lay the foundation of the experiment model selection.

目的 比较匹鲁卡品点燃新生鼠痫性发作模型及戊四氮点燃模型的行为学特征及组织学改变，为实验模型的选择奠定基础。

This paper designs the architecture of this platform. According to the scale of ocean spatial data in the platform, it presents two organizing spatial data model-data file model and relational database model, and gives each of them storage mechanism accordingly.

论文设计了海洋空间信息服务平台的体系结构，根据平台中海洋空间数据的规模，提出了两种空间数据存储模式，即数据文件集模式和关系数据库模式，并分别给出了相应的存取机制。

New model Platte and model storage form have also presented using the model element asbasic storage element.

论文还提出了一种以模型组成元素为基本存储单元的模型模板和模型的存储形式。

Methods Duplicated the model of rats with pneumococcus pneumonia and divided the rats into young control group, young model group, aged control group and aged model group.

复制肺炎双球菌肺炎模型，分为青年对照组和模型组，老龄对照组和模型组。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了