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The controlling shareholders' agency problem is of great importance to corporate governance in china listed companies. The purpose of this paper is to study the controlling shareholders' agency problem from financing instruments and to analyze the relationship between the controlling shareholders' agency problem and equity financing preference.

中文摘要：控股股东的代理问题是中国上市公司治理的重大课题，本文的研究的题目是中国上市公司的股权融资中的代理问题，是从融资的方面对代理问题进行展开研究，分析了控股股东代理问题和股权融资偏好问题之间的联系，并提出改进的建议。

ABSTRACT Some of the problems raised from the H〓 control theory and its applications are studied deeply in this dissertation. They are system model description in robust design problems---linear fractional transformation, singular H〓 problem which occurs when some of the conditions of the standard H〓 problem are not met, and the quadratic stabilization problem is studied from the point of H〓/μ synthesis.

本论文对H〓控制理论及应用中的一些问题进行了深入的研究，着重解决了鲁棒设计问题中的系统模型描述---线性分式变换，以及当H〓标准问题的某些条件得不到满足时所出现的奇异H〓问题。

Because problem which has complementary constraints does not satisfyconstraints qualification, which is the assumption for nonlinear problem solvers, weuseεslackness technique to deal with this problem.

因为具有互补约束的优化问题一般不满足传统优化算法所要求的约束规范假设，所以本章采用了ε松弛的方法处理互补约束。

If you apply this method to solve problem, most of mechanism synthesis problem will turn into one problem, that is to solve the equation set. The most difficult point is get full solution of the equation set, thus it can provide a wider range for optimized project.

用解方程组法进行机构综合时，大多数机构综合的问题都可以转化为求解非线性方程组的问题，而其难点在于求出非线性方程组的完全解，以便为优选方案提供较大的解空间。

In this paper,the Riemann boundary value problem for bianalytic vector function s is investigated using the theory of boundary value problem for analytic functions,we have not only found the solution method for bianalytic vector function s,but also established an explicit form of the general solution and the conditions for the solvability of the above problem.

利用解析向量函数边值问题理论，提出了双解析向量函数的R iem ann边值问题，并研究了问题的解法和解的一般表达式及可解性条件，得到了相应的可解性定理，同样方法可解决多解析向量函数的边值问题

The radiation problem is transformed into a transmission problem of the corresponding waveguide structure to avoid the difficulty of the field source problem which is met in the traditional analysis.

在分析过程中，将天线的辐射问题转化为相应波导结构的传输问题，从而避免了求解场源问题的困难；并使计算过程得到了简化。

With the idea of smoothing Newton method, we propose a new class of smoothing Newton methods for the nonlinear complementarity problem based on a class of special functions. In this paper, complementarity problem is converted into a series of smoothing nonlinear equations and a modified smoothing Newton algorithm is used to solve the equations. We use Newton direction and Gradient direction together in the algorithm which guarantees that our method is globally convergent. Also using another smoothing function, we reformulate the generalized nonlinear complementarity problems defined on a polyhedral cone as a system of smoothing equations and a smooth unconstrained optimization problem. Theoretical results that relate the stationary points of the merit function to the solution of the generalized nonlinear complementarity problems are presented, we use the modified smoothing Newton algorithm in generalized nonlinear complementarity problems, under mild hypothesis, a global convergence is proved.

本文一方面基于现有的各种光滑Newton法的思想和半光滑理论，利用著名的F-B互补函数的光滑形式，首先将互补问题的求解转化为求解一系列光滑的非线性方程组，然后给出了一种修正的光滑Newton法，该方法不仅放宽对函数F的要求，在Newton方程不可解时引入初始效益函数的最速下降方向，而且光滑因子的选择也比较简单可行，同时在适当的条件下，证明了其算法具有全局收敛性；另一方面，借助另一种F-B光滑函数，将多面体锥上的广义互补问题转化为一种光滑形式，讨论了优化问题的稳定点与广义非线性互补问题的解之间的理论关系，并将这种修正的光滑Newton法用于求解广义非线性互补问题中，在适当的条件下，该算法同样具有全局收敛性。

At the same time,select three issues carries on solve by the Year 2008's ACM\ICPC finals:air condition machine is description the elbow of air conditioning installation problem,limited the quantity and types of air-conditioning pipe under the conditions of the installation of air-conditioning method;Password suspects,this problem is giving a system password letter combinations possible combinations and length under the conditions,to design an algorithm to calculate the correct arrangement of the password;Steam roller,this problem giving the situation of urban streets,drive steam roller from one point to another point of the shortest path,is used by how many time.

同时，选取了2008年度ACM\ICPC总决赛的三道题目进行求解：空调机器这一题描述的是对空调管的安装问题，在限定空调管数量和型号的条件下空调管可能的安装方法；密码嫌疑这一题求解的是在给定一个系统密码的可能的字母组合和长度的条件下，设计一个算法以算出正确的密码的排列方式；蒸汽压路机这一题是在给出城市道路情况的条件下，求两点间压路机走完最短路径总共所花费多少时间的问题。

Base on the classical problem of the theory of optimal stopping──the secretary problem,k-th choice problem is worked out(k managers choose k secretaries ).The optimal stopping rule is given,and we proved that the optimal value of probability is the kth item of Poisson distribution with parameter k.i.e.e￣-K/k!.

从最优停止理论的经典问题──秘书问题出发，构想了K个经理从N个姑娘中各选一秘书的问题，证明了其最优规则，得出了概率最优值是参数为K的泊松分布的第K项，即e￣k￣k／k从！

The problem has been studied from two sides, firstly, from the viewpoint of applicability, based on the development strategic objectives of the oil company, with the aim to unify the exploration and extraction decisions of the resources in an integrated framework, and integrate the macro economic and technical objectives with micro economic and technical models of an oil well, an integrated non-linear dynamic optimal control model has been constructed, the objective is the benefit maximum of the exploration and extraction of the resources, and the optimalstrategies are obtained by changing the problem into a non-linear mathematical programming problem, on the other hand, from the more macro level, based on the analysis of the characteristics of the exploration and extraction activities of oil and gas resources, a conclusion is easily deduced that the procedure is full of randomicity, then discovering procedure of oil deposit is proved to be a Poisson process, and the reserves process is a supermartingale process, so the model of exploration discovery rate and the reserves model could be constructed.

其次从相对更宏观的层次上，通过对油气资源勘探与开发的特点分析，认为具有很强的随机性，证明了勘探活动发现油气藏的过程为一泊松过程，所发现的油气藏储量为一上鞅过程，在此基础上，建立了油气藏勘探发现率模型及储量模型，在油气价格服从几何布朗运动条件下，以油气开采收益最大化为目标，建立了一个油气资源勘探与开发的随机最优控制模型，采用动态规划方法得到了值函数的HJB方程，并针对方程的特点，以及方程及其变量所对应的经济学意义，对最优策略的求解进行了一些讨论。

Analog output can display output results.

可以模拟输出显示输出效果。

It implied that RAPD technique pro vided a new alternative for checking irradiation induced effects.

对扩增产物进行数据分析，结果表明RAPD技术能够检测出辐射后唐菖蒲基因组变异情况，可用于对唐菖蒲辐射后基因变异的分析。