查询词典 structure function

It analyses the evolvement of Japanese resident consuming structure from diverse fields, e.g.: general consuming structure, dietetical consuming structure, education and entertainment consuming structure, transportation and communications consuming structure and consuming expense structure of different generations.

分别从总体消费结构、饮食消费结构、教育娱乐消费结构、交通通信消费结构和不同年龄层消费支出结构等不同方面分析了日本居民消费结构的演变。

This article studies the domestic and foreign correlation traveling spatial structure theory in the system in the foundation, through to the region tourist resources spatial structure system, the traveling market spatial structure system and the traveling transportation spatial structure system carries on the concrete analysis, constructs according to the analysis result to the Yulin territory traveling spatial structure, in under the science development view instruction, constructs the Yulin territory "wholeheartedly area three pieces" the spatial structure, and proposed specifically further promotes take the Yulin city as the center, exerts oneself makes "the desert character and style traveling piece, the borderland character and style traveling piece, the loess character and style traveling piece, along the yellow traveling belt" traveling space layout, and supports tourist area to each piece areaCarries on the elaboration;In the traveling space development, has determined "wholeheartedly third mate three principal axis two inferior spool threads" the spatial development pattern;Finally, this article from the ecology protection, the historical culture protection as well as the policy guaranteed the aspect proposed the Yulin territory travels the sustainable development realization way.

本文在系统研究国内外相关旅游空间结构理论的基础上，通过对区域旅游资源空间结构体系、旅游市场空间结构体系和旅游交通空间结构体系进行具体分析，根据分析结果对榆林市域旅游空间结构予以构建，在科学发展观的指导下，构建榆林市域&一心三片一带&空间结构，并具体提出进一步提升以榆林城区为中心，着力打造&大漠风情旅游片、塞上风情旅游片、黄土风情旅游片、沿黄旅游带&的旅游空间布局，并对旅游分区进行了建构；在旅游空间拓展上，确定了&一心三副三条主轴线两条次轴线&的空间发展格局；最后，本文从生态保护、历史文化保护以及政策保证等方面提出榆林市域旅游可持续发展的实现途径。

For the Riemann boundary value problems for the first order elliptic systems , we translates them to equivalent singular integral equations and proves the existence of the solution to the discussed problems under some assumptions by means of generalized analytic function theory , singular integral equation theory , contract principle or generaliezed contract principle ; For the Riemann-Hilbert boundary value problems for the first order elliptic systems , we proves the problems solvable under some assumptions by means of generalized analytic function theory , Cauchy integral formula , function theoretic approaches and fixed point theorem ; the boundary element method for the Riemann-Hilbert boundary value problems for the generalized analytic function , we obtains the boundary integral equations by means of the generalized Cauchy integral formula of the generalized analytic function , introducing Cauchy principal value integration , dispersing the boundary of the area , and we obtains the solution to the problems using the boundary conditions .

对于一阶椭圆型方程组的Riemann边值问题，是通过把它们转化为与原问题等价的奇异积分方程，利用广义解析函数理论、奇异积分方程理论、压缩原理或广义压缩原理，证明在某些假设条件下所讨论问题的解的存在性；对于一阶椭圆型方程组的Riemann-Hilbert边值问题，利用广义解析函数理论、Cauchy积分公式、函数论方法和不动点原理，证明在某些假设条件下所讨论问题的可解性；广义解析函数的Riemann-Hilbert边值问题的边界元方法是利用广义解析函数的广义Cauchy积分公式，引入Cauchy主值积分，通过对区域边界的离散化，得到边界积分方程，再利用边界条件得到问题的解。

We prove the equivalent conditions of completely monotone function, we also discuss the relationship of positive definite function, semi-positive definite function and completely monotone function when the function take values in a commutitive von Neumann algebras.

我们证明了完全单调函数的几个等价条件，并且讨论了取值于交换von Neumann代数的正定函数，半正定函数及完全单调函数之间的关系。

Properties of efficient portfolios and the efficient frontier to the model are systematically analyzed. Our main results concerning the properties are: every efficient portfolio can be solved by minimizing portfolio risk under a given level of portfolio return or by maximizing portfolio return under a given level of portfolio risk; on the efficient frontier, the risk is a convex and strictly increasing function of the return and the return is a concave and strictly increasing function of the risk; the utility function on the efficient frontier can be expressed as a quasi-concave function of the risk or the return if the investor's utility function is quasi-concave.

从理论上系统地对该模型下的有效投资组合和有效前沿的性质进行了分析，结果表明：每一个有效投资组合可通过在给定期望收益水平的条件下最小化投资组合风险来获得，或者在给定风险水平的条件下最大化期望投资组合收益来获得；在有效前沿上，风险是收益的严格单调递增凸函数，收益是风险的严格单调递增凹函数；当投资者的效用函数是拟凹函数时，则有效前沿上的效用可表达成风险或收益的拟凹函数。

The convex function develeped so many years that convex functionals are now a class of very universal functionals.The kinetic energy in the classical is the most natural convex function.Others like entropy and so on are convex functions.The economic core is closely connected with the convex function.The western economic core question is the optimized question.The optimized theory has something to do with the convex function and the concave function.

凸函数的发展经年已相当完善其应用非常广泛，在古典力学中的动能，就是最自然直接的凸函数，其他如熵……等均是，连经济学的核心都与之有极密切相关，西方经济学的核心问题是最优化问题，最优化理论又与凸函数与凹函数密切相关。

The decreasing conditions of an energy function are investigated by the use of convex function. By utilization of the primal convex function, the conditions are analyzed under which its conjugate function minus a quadratic function is also convex.

利用凸函数的定义研究了能量函数下降的条件，根据凸函数的性质分析它的共轭函数减去二次函数之差仍为凸函数的条件。

The paper uses precise step to produce the continuity function of water hammer mathematic model, not only gains more precise water hammer pressure function and water hammer wave speed functionbut also founds correct water hammer mathematic modelContinuity EquationMovement EquationAfter ignoring subordinate facts, function (1) and (2) translate into the current applied water hammer pressure function and water hammer wave speed function.

本论文对水击数学模型中的连续性方程重新进行了严谨的推导，不仅得到了更加准确的水击压强和水击波速的计算公式也建立了正确的水击数学模型连续性方程运动方程当忽略次要因素以后，公式(1)和(2)即可转化为当前应用的水击压强计算公式和水击波速计算公式。

In the first session the fans vibration on-line monitoring system is realized with VC language, also compile auto power spectrum density function, cross power spectrum density function, autocorrelation function and cross correlation function etc spectral analysis function to carry through simple offline fault diagnosis.

首先用稳定性强、扩展性好的VC++语言开发了通风机振动在线监测系统，并编写了自功率谱密度函数、互功率谱密度函数、自相关函数和互相关函数等频谱分析函数来进行简单的离线故障诊断。

The culture phenomenon that with respect to " function " place of this one content permeates makes the text a few discuss newly, the one word of " of origin " function of the name of " of function of edification.1 " that culture gets in making the pupil is learning the process of function is German philosopher Leibnitz introduced the earliest 1673, he expresses to allow with " function "

本文就"函数"这一内容所渗透的文化现象作一些新的探索，使学生在学习函数的过程中得到文化的熏陶。1 "函数"名称的由来"函数"一词是德国哲学家莱布尼兹于1673年最早引进的，他用"函数"表示任

A backer of an Afghan law that critics say legalizes marital rape has rejected the international outcry as foreign meddling.

饱受批评的一项法律的拥护者说合法化的婚内暴力不会受国际舆论的干涉。

Years ago, a ancient Egyptian fleet went to the Land of punt for seeking a kind of flavor named "myrrh", and aromatic plants which has dense exotic style for the queen Hatshepsut.

3500年前的一个古埃及的舰队到&彭特之地&寻找一种叫没药的香料。