查询词典 lattice function

By taking advantage of SQL, we obtain an effective algorithm for extracting fuzzy association rules in fuzzy database in Chapter 4. Moreover, we establish generalized concept lattice in generalized rough approximate space by using lattice theory, and obtain a fast algorithm of extracting useful rules for making decision.

在本学位论文的第四章，作者通过在模糊数据库中引入SQL数据库查询语言，得到了一个模糊关联规则的高效挖掘算法；并且在广义粗近似空间中，通过与格论知识的结合，我们重新构建广义概念格，从而快速高效的发现采掘其中蕴涵的有用规则，为人们决策提供帮助。

The folded plate latticed shell is a new type of lattice space structure, having merits of both folded plates and spatial lattice structures.

一、折板形网壳结构折板形网壳结构是将通常的单层网壳弯折而成的一种波形截面，从而获取较大的结构高度。

According to the method, the effect functions of imperfections about buckling loads of the composite sheet—space lattice shell and she single layer lattice shell are obtained. These effect functions can be simply used to determine the nonlinear buckling loads of engineering structures with imperfections.

并运用该方法，分别计算编制了板片空间结构和普通单层网壳的缺陷对临界荷载的影响函数图表，根据图表中均值和方差函数以及缺陷敏感性指标，在设计该类结构时可以较简便地确定缺陷对临界荷载的影响。

Daily (Reporter in the Shi-kai)"lattice Shop" is a small hope that when those young people the boss provides a relatively cheap operating space,"lattice shop" when the rise in the Xidan Warwick, Pearl, such as shopping malls operating.

商报讯&格子铺&的出现为那些希望当小老板的年轻人提供了一个相对廉价的经营空间，&格子店&兴起时多是在西单华威、明珠等商场内经营。

Furthermore we introduce the concepts of coverings and lattice-valued homomorphisms,we prove that the L-valued fuzzy transformation semigroups in which the multiplication is fuzzy transformation semigroup inducible is equivelent to usual faithful transformation semigroups in the sence of lattice-valued strong homomorphism.

若格半群中的乘法是格值变换半群可诱导的，在格值强同态下证明了格值可诱导变换半群和一般有效变换半群是等价的。

In the preprocessing phase, our algorithm samples the environment in a 3D lattice structure, the potentially visible surface list of square-frustum at each cell in the lattice are precomputed and stored in a cube at the center of the cell.

当视点不位于场景采样点处时，从该视点邻近的采样点处存储的可能可见的多边形表中搜索那些位于当前视域内的多边形，只需绘制这些多边形即可。

The lattice distortion and the lattice parameters′change regularity in second phase particle MgAl〓O〓 were demonstrated by means of the calculation of intersection distances of high-order Laue zone lines in center disk of CBED pattern.

通过计算中心盘HOLZ线相对距离，研究了第二相颗粒MgAl〓O〓晶格畸变和晶格常数变化规律。

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。

This matter overthrew all basises I learned from Sunday school .

这件事把我从周日学校学到的所有道理都颠覆了。

It's one of the cruel ironies of aging: if you want to remember your favorite restaurants, the less you should eat at them.

这是一个老化的残酷讽刺：如果你想记住你最喜欢的餐馆，你应该更少吃到它们。