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Firstly, by adopting the thought of Adomian's decomposition method, the generic dynamic model in mechanical systems are transformed into a standard first-orderdifferential-equations, and then the inverse operator method for the approximate analytic solution of nonlinear mechanical system is developed based on the exact solution in form.

主要研 究工作如下：利用Adomian的分解方法的思想，把机械系统中最一般的动力学模型转化为一阶标准型微分方程组，以形式上的精确解的表达式为基础构造了求解机械系统非线性模型近似解析解的逆算符方法；针对机械系统非线性模型的特点，提出了直接处理高阶方程的不降阶逆算符方法；证明了该方法的收敛性。

The one order differential model and convolutional model of impedance formula of amplitude versus offset inversion were established. Impedance inversion formula from AVO was derived based on Bayesian framework. Methods of using Huber function as prior model parameter distribution and covariance matrix from well log as constrains were developed. The P-wave impedance, S-wave impedance and density were calculated by the conjugate gradient algorithm.

为此建立了振幅随偏移距变化波阻抗反演公式的一阶差分模型及褶积模型，推导了基于贝叶斯理论的AVO波阻抗反演公式，给出了采用Huber分布作为模型参数的先验分布及测井数据的参数协方差矩阵作为约束条件的实现方法，并利用共轭梯度法计算了纵、横波阻抗及密度。

Second, transient flow for vertical well and fractural well in porous media with arealanisotropy has been researched in this paper. The analytic solution for vertical well andsemi-analytic solution for vertical fractural well is developed by using image inversion,superposition principle, Laplace transformation, Fourier transformation, as well as theirinverse transforms, and storage and skin are taken into account. For vertical fractural well,influence of pressure and productivity is studied when the orientation of artificial fractureisn't in accordance with the direction of major permeability, it is fundamental to evaluatepotential and analyze well test data.

文中研究了平面各向异性储层不定常渗流问题，建立了平面各向异性储层交叉直线边界中一口直井渗流的数学模型，利用镜像反演、Laplace变换、Fouier变换及其反变换推导了不同边界条件下直井的Laplace空间解析解，考虑井储和表皮的影响，分析了曲线特征及影响因素的敏感性曲线；并运用影响椭圆及Duhamel叠加原理，推导了平面各向异性储层中垂直裂缝井的压力分布方程，考虑了水力裂缝与主渗透率轴成一定角度对压力及产能的影响，为垂直裂缝井的产能评价及试井分析提供依据。

In Chapter 2,we improve the Differential Evolution algorithm developed rapidly in recent years,and apply it to study the multi-exponential inversion problem in nuclear magnetic resonance.

第二章改进了近年发展起来的差分进化算法，研究核磁共振T_2谱多指数反演问题。

In this paper,the TCP flow process is modeled as two order nonlinear varying-time system.By analyzing the invertibility of the system,a new AQM algorithm based on artificial neural network inverse system theory that is a newly developed nonlinear theory with good robustness is proposed.

在研究中，TCP的流量控制过程被视为二阶非线性时变系统，并通过可逆分析，证明该系统可逆，采用神经网络逆系统这种近年来发展起来的非线性鲁棒控制理论作为控制器的设计方法，设计出一种新的主动队列管理算法。

Because of the unstructured environments and the force impulse excitation of the following manipulators, the invertibility control input can not control the conducting manipulator exactly. In this paper, a new adaptive and sliding mode control scheme is developed assuming that all system parameters including the joint flexibility values are uncertain but within given bounds.

在以上方法的基础上，本文再对多杆柔性关节机械手在约束空间的轨迹优化规划问题进行了研究，首先利用坐标转换得出多杆柔性关节机械手的约束动力学模型，然后利用逆系统方法求出了系统在约束空间的次优化轨迹及力控制器。

Developed adapted using the IGBT invertor in the high efficiency cocurrent voltage-stabilized source's development work.

本文通过应用IGBT逆变器以设计大功率的直流稳压电源。

The Investment Bank is one of the most important part of the Finance System of the developed countries.

投资银行是发达国家金融体系和国际金融体系重要的组成部分之一。

Wide exchanges and co-operations with other counties (especially with developed countries in America and Europe) are indispensable to China' reform and opening up course, and to the invigoration of the economy, science and technology, and culture.

中国的改革开放，经济、科技、文化的振兴，离不开与世界各国的广泛交流与合作。

The software that Levchin and his team developed to combat fraud runs quietly and invisibly.

Lechin和他的开发团队于欺诈犯罪的战斗无声无息的进行着。

Vishnu entered a dark fourth dimensional dream that did not support his field or continued life.

毗瑟挐进入了一个第四密度的黑暗梦想，那里并不支持他的能量场或继续生命。

Leaders and decision-making persons use it to collect the data, including the information of unit work, handing in fee, oweing fee, prepaying fee,changing and afterpaying and account transfering of joining-insurance employee, and account paying of all kinds of insurances from hospitalization insurance institutions.The collected data is picked up, organized, switched and showed to user.

该子系统主要面向各级领导、决策分析人员；从各个医疗保险经办机构和定点医疗机构采集数据，包括在各个医疗保险经办机构处理的单位办公信息，单位缴费、欠费、预缴费信息，参保职工变更信息，参保职工增减变动信息，参保职工补缴信息，参保职工帐户划拨信息：包括各定点医疗机构处理的各险种帐户支出信息，各险种的统筹金支付信息等；将采集的数据提取，组织和转换，然后展示给用户。