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Noindent \hskip 20pt In chapter two, we prove the existence and multiplicity results of some nonlinear biharmonic equations by using lower semicontinuity method and minimax method.

在第二章中,通过下半连续方法和极大极小方法,我们证明了一类非线性双调和方程解的存在性和多解性的结论。

The basic idea of Tikhonov regularization is that linear compact operator equation of the first kind is replaced by the minimization problem of Tikhonov functional, the paper demonstrates the minimization of Tikhonov functional is an well-posed problem. In the end, the paper suggests a new type of iterative algorithm to solve inverse problems of parameter identification for one-dimension parabolic partial differential equation .

本文论证了Tikhonov泛函极小化问题是适定的,即满足西安理工大学硕士学位论文解的存在性、解的唯一性和解连续依赖于数据的稳定性:并且此极小化问题等价丁求解第一类方程的正规方程。

In terms of the minimum question of a positive definite quadratic function,a set of Newton directions in minimum points derived with an accurate single dimensional search are used to produce a set of conjugate direction ,and a proof of convergence is presented.

对正定二次函数极小问题,利用精确一维搜索所得极小点处的牛顿方向来生成一组共轭方向,并给出收敛性证明

Systems of inqualities,the minimum or maximum of a convex function over a convex set,Lagrange multipliers,and minimax theorems are among the topic treated,as well as basic results about the structure of convex sets and continuity and differentiability of convex functions and saddle-functions.

其中对不等式系统、凸集上的凸函数的极小或极大、拉格朗日乘子和极小极大定理做了专题论述,同时对凸集的结构和连续性以及凸函数的可微性和鞍点函数的基本结果做了介绍。

To deal with this, a minimal model theory is devel-oped, by which the temporal semantics of MSVL programs is captured.

因此,我们提出了极小模型理论并证明了极小模型的存在性定理。

In order to study vector-valued optimization problem, in chapter 5, a class of vector -valued function, that is, uniformly same-order set-valued function is introduced , which includes the separated functions as its proper subset; without hypothesis of convexity, new minimax theorem and saddle point theorem for uniformly same-order set-valued function are established. Next, by employing Ky Fan\'s lemma and H-KKM mapping , several existence results for generalized vector equilibrium problem established.

为了研究向量优化问题,作为可分函数的推广,第五章引入了一致同阶集值函数类,在没有凸性条件的假设下,对一致同阶集值函数建立了新的极小极大定理与鞍点存在定理;利用H-KKM映射,对一般向量均衡问题建立了(来源:A73BcbC论文网www.abclunwen.com)几个存在性定理;最后讨论了集值向量均衡问题系统,利用集值映射的拟凸性,在较弱的条件下证明了解的存在性。

To obtain quadratical convergence, however, strict complementarity condition at the Danskin point was used. The condition is too strict to be satisfied in many practical problems such as discrete semi-infinite minimax problem. Another kind of Newton method for finite minimax problems was presented by E. Polak and, without strict complementarity at the Danskin point, superlinear convergence (of order 3/2) was proven.

Polak等人提出了一种直接求解极大极小问题的二阶收敛的牛顿法,但是为获得二阶收敛速度要求在Danskin点处满足严格互补条件,这个条件太强,很多实际问题尤其是半无限极大极小问题的离散化不满足该条件;他们又给出另外一种牛顿法,在不假设严格互补条件成立的情况下,证明了它的超线性(3/2阶)收敛性。

This new algorithm can derive a rheological parameter estimation that shows superior statistic features of fitting residual error unbiasedness and least variance.

该算法不需要人工给定迭代初始值,迭代过程稳定收敛到最小点,不会陷入极小点陷阱,收敛速度很快,所得到的流变参数估计具有拟合残差无偏性和方差最小的优良统计特征。

The main goal of the thesis is to study such some problems as theexistence of weak solutions of quasilinear elliptic equations involvingcritical Sobolev exponents on a bounded domain and〓,the unique-ness of weak solutions、regularity of weak solutions、stability ofweak solution on exponent p、continuity of very weak solutions ondomains、the fusion problem of weak solutions and the existenceof minimal positive solution of a class of quasilinear elliptic obstacleproblems,which have been extensively concerned,but have not beensolved satisfactorily in the latest several years.

本文主要对近年来人们普遍关注而又没有完全解决的几个问题——有界域及无界域上带临界增长的拟线性椭圆方程弱解的存在性,弱解、很弱解的唯一性、正则性,解关于区域的连续依赖性,解关于指数的稳定性,弱解、很弱解的合并问题,以及椭圆型偏微分方程对应的障碍问题极小正解的存在性等进行研究。

RESULTS: The results showed that the water extract of phellodendron and one of itsmain components increased the cell membrane fluidity in the inactive state, but the other two components, berberineand jatrorrhizine, decreased the cell membrane fluidity.

结果:在无ConA刺激时,黄柏的水提物可提高小鼠脾细胞膜的流动性,6.25%的浓度与对照组相比有极显著性差异;小檗碱与药根碱可降低脾细胞膜的流动性,与对照组相比均有显著性差异;巴马汀可提高脾细胞膜的流动性,与对照组相比有极显著性差异。

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

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血精的原因很,以良性病变为主。