查询词典 forward difference operator

The operator of crossover, mutation and selection in HGA have function of macroscopically search, that deals with a large scale search, while the quasi-Newton operator has function of local search, and deals with a small circle search and problem of accelerating of search.

混合遗传算法中交叉算子、变异算子和选择算子的作用是宏观搜索，处理的是大范围搜索问题，而拟牛顿算子迭代运算的作用是局部搜索，即微观搜索，处理的是小范围搜索问题和搜索加速问题。

Because traditional finance subject utmostly canonize the rational selected mode and methodology which keep the form of the financial interest need of the enterprise and its stockholders and the network of their financial relationship out of its analytic area, so liking the mainstream economics, traditional finance subject can not offer trustworthy explains to many financial affairs and can not prescribe the right policy prescription to the important financial problems, either. As a result of the logistic and realistic errors in the traditional mode, it will have an important and practical meaning to bring the new system principle into the analytic area of the financial subject and to develop the financial theory. The main points of this dissertation are as follows: The financial affairs of an enterprise are not the inner actions of the individual firm, but the function of the financial network of stockholders, so we should use the limit of the affairs not the inner property or inner driving force to interpret the financial affairs of an enterprise, we should use the method of circuital analysis not of individual analysis to investigate the financial affairs of an enterprise; The financial affairs of an enterprise is a social behavior, it is involved in the social structure and is restricted by the social structure, so we should care for the social characters, social responsibilities and social effects of the financial affairs of an enterprise; The financial network of stockholders is composed of five phases as follows: the finance of external stockholders, the finance of the operator, the finance of function, the finance of subsection and the finance of the stuff, in which the finance of the operator is dominant; The operational intensity and efficiency of the financial network of stockholders are influenced by technical factor as well as institutional factor, in which institutional factor is the fundamental character of financial affairs. Ultimately the substance of the financial affairs is the arrangement and operation for the financial system by stockholders; The relationship between enterprise and its stockholders is cooperative and conflicting. The important mechanism to solve the financial conflict between stockholders is the construction of the financial system, including the formal and informal system construction. Information and faith are the important mechanism to coordinate the financial conflict between stockholders, so we should pay much attention to the research of formal and informal system.

本文的主要观点是：企业财务行为不是企业个体内部的行为，而是利益相关者财务网络行为，因此应当用对行为的结构限制而不是企业个体的内在属性或内在驱力来解释企业的财务行为，用网络分析的方法而不是个体分析的方法研究企业财务行为；企业财务行为是一种社会行为，它嵌入于社会结构之中，受企业财务所处的社会结构的限定，因此应当关注企业财务行为的社会性质、社会责任和社会后果；利益相关者财务网络内含外部利益相关者财务、经营者财务、职能财务、分部财务和员工财务五个层次，其中经营者财务在其中占据主导地位；利益相关者财务网络的运作强度与运作效率既受技术性因素的影响，又受制度性因素的影响，其中制度性是财务的根本属性，企业财务的实质说到底还是面向利益相关者的一种财务制度性的安排与运作；企业与利益相关者之间以及利益相关者相互之间的财务关系具有合作性与冲突性，化解利益相关者财务冲突的重要机制是财务性的制度建设，包括正式制度建设与非正式制度建设，信息和信任是协调利益相关者财务冲突的重要机制，因此应当高度关注财务的正式和非正式制度的研究。

The concept of Galois connections for partially ordered objects in a topos is introduced and the kernel operator and closure operator are investigated.

在任意 topos 中引入了偏序对象之间的 Galois 联络的定义，刻画了偏序集对象上的核算子和闭包算子。

These problems include the selfadjointness of the coefficient matrix operator, the functional of the matrix operator equation, the equivalence between variational problem and boundary value problem of eddy-current fields, and the extreme value principle of the functional.

本文首先从求解时谐涡流场的〓-ψ法与〓-Ω法的矩阵算子方程出发，提出了时谐涡流场的统一矩阵算子方程，进而系统地讨论了该方程的系数矩阵算子的自伴性、矩阵算子方程的泛函、涡流场边值问题与对应变分问题的等价性以及泛函的极值原理。

The main subjects of the volume include:- spectral analysis of periodic differential operators and delay equations, stabilizing controllers, Fourier multipliers;- multivariable operator theory, model theory, commutant lifting theorems, coisometric realizations;- Hankel operators and forms;- operator algebras;- the Bellman function approach in singular integrals and harmonic analysis, singular integral operators and integral representations;- approximation in holomorphic spaces.

卷包括：主要课程-定期微分算子和延迟方程谱分析，稳定控制器，傅立叶乘数；-多变量算子理论，模型论，换位解除定理，coisometric变现；- Hankel算子和形式；-算子代数；-在奇异积分和谐波分析，奇异积分算子和积分表示贝尔曼函数方法；-在全纯空间近似。

Finally we discuss the collectively compact Toeplitz operator sequences on Dirichlet space.it extend the single compact operator.

最后对Dirichlet空间上的Toeplitz算子序列的总体紧性进行了刻画，这是单个算子情形的推广。

For given A, B and C, when C is a compact operator, we give the sufficient and necessary condition under which Mx is left invertible, for some operator X.

3当C∈K时，分别讨论了对一切X∈B，都有M_X左可逆的充要条件和存在X∈B使得M_X左可逆的充要条件。

In the second chapter, the KDV type equation on unbounded domain is considered. Applying with the method of decomposing operator and the theory of constructing some compact operator in weighted space, the existence of exponential attractor is obtained.

在第二章中，运用带权空间构造一类紧算子和算子分解的方法，研究了无界区域上的KDV型方程，得到了该方程指数吸引子的存在性。

In the second chapter, the suspension bridge equation on unbounded domainR1 is considered. Applying with the method of decomposing operator and thetheory of constructing some compact operator in weighted space, the existenceof global attractor is obtained.

在第二章中，运用带权空间构造一类紧算子和算子分解的方法，研究了该方程在无界区域R1上的情形，得到了其全局吸引子的存在性。

The title of this article is the estimate of the essential norm of a compositionoperator between Bloch-type spaces in the unit ball of C^n. That is to say, making useof the tool of the essential norm ,we get the upper estimate and the lower estimate ofthe composition operator which we have studied .In addition, we get a sufficient andnecessary condition for the composition operator to be compact.

本文主要讨论了单位球上Bloch型空间之间复合算子的本性模估计，即用本性模这个工具来研究复合算子并给出了我们所研究算子的本性模的上界和下界估计，并由此可以得到相应算子紧的充要条件。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了