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u函数
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  u-function
     THE U-FUNCTION METHOD OF SOLVING DIRECT AND INVERSE PROBLEMS OF 3-D DENSITY INTERFACE
     解三度密度界面的U函数
短句来源
     The universal generating function can express the relation between system performance level and state probability, and use the u-functions of elements to obtain the u-function of system.
     通用生成函数(u函数)能够表达系统性能水平和状态概率之间的关系,并且可以方便地由元件的u函数获得系统的u函数
短句来源
     This thesis defines the reliability indices of multi-state system by u-function and gives the method of getting u-function of system,according to different system structures and performance measures, and the normal procedure of multi-state system reliability optimization using genetic algorithms.
     本文利用u函数定义了多态系统的可靠性指标,给出了针对不同系统结构以及不同性能度量指标情况下的系统u函数的求解方法,以及多态系统可靠性优化问题的一般求解过程。
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  “u函数”译为未确定词的双语例句
     Through the theoretical analysis and the empirical analysis the paper concludes that there is a close relationship between the auditing market and the auditing performance. The market performance is the converse U function to the market concentration. That means the performance will be heightened then descended with the increasing of the concentration.
     通过对独立审计市场结构与独立审计市场绩效之间分别进行理论分析与实证分析得出:在独立审计市场中,市场结构与审计市场绩效之间存在较强的相关性,市场绩效是市场集中度的倒U函数,即独立审计市场的绩效随着市场集中度的提高先提高,达到一定程度后降低。
短句来源
     In two part,with the induction of function U,the relation between the maximum modulus and the coefficients,exponent of Dirichlet series of zero order in the whole plane is studied. The obtained results improve some known results.
     在第二部分中,当引入U函数后,讨论了全平面上零级Dirichlet级数最大模与指数和系数之间关于U函数的关系,得到了较好的结果。
短句来源
     In traditional interface inversion using U function, we need to iteratively calculate the coefficient K_(ij)=‖tg~(-1)ξη/(ξ~2+η~2+h_0~2)~(1/2h_0)|ξ_(i+1) ξ_i|η_(j+1) η_j This traditional interface inversion takes too much time because of too long computation time for the arctangent function tg~(-1)x.
     在传统的U函数界面反演方法中,因为要在迭代过程中多次重复计算系数 K_(ij)=‖tg~(-1)ξη/(ξ~2+η~2+h_0~2)~(1/2h_0)|ξ_(i+1) ξ_i|η_(j+1) η_j由于反正切函数tg~(-1)x的计算时间太长,使得界面反演耗时太多。
短句来源
     In light of the characteristic of U function, the space-domain fast algorithm for U function is developed so that the interface inversion is much faster than before, and this method has wide-spread adaptability.
     本文从U函数本身的特点出发,导出了U函数在空间域中的快速算法,因而使得界面反演时的速度大大提高,使此法具有广泛的实用性。
短句来源
  相似匹配句对
     MULTIPLE WINDOW FUNCTION
     多窗口函数
短句来源
     The Lcm-sum Function
     最小公倍数的和函数
短句来源
     m) is Euler function.
     φ (m)是Euler函数
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  u-function
The course of the Ψu-function with time correlates with the increase of the specific cell concentration being conditioned by the growth phase of the culture but similar for fermentative and respirative metabolism.
      
A U-shaped relationship between the size of letter groups and the rate parameter of the regression functions was predicted and found; during practice, the minimum of the U-function shifted from small to large group sizes.
      
Consider u-function representing the pmf of random performance of a single machine used within a specific manufacturing stage.
      
To obtain the u-function representing the pmf of a function of two independent random variables, composition operators are introduced.
      


Using the Jocobi’s method, a first intergal of the differential equation of geodesics on the surfaces of Liouville is given, it is a result of Liouville. The present paper contains an extension of the theory, by vector method it finds the following rsult: If the element of the are of the hypersurfaces in the Euclidean space of four dimensions is given by where U, P are only of functions of u; V, Q are only functions of v; W, R are only functions of w. Then a first integral of the differential equations of geodesics...

Using the Jocobi’s method, a first intergal of the differential equation of geodesics on the surfaces of Liouville is given, it is a result of Liouville. The present paper contains an extension of the theory, by vector method it finds the following rsult: If the element of the are of the hypersurfaces in the Euclidean space of four dimensions is given by where U, P are only of functions of u; V, Q are only functions of v; W, R are only functions of w. Then a first integral of the differential equations of geodesics on the by persurfaces is given by where cosφ_1, cosφ_2, cosφ_3 are the direction-cosines of the geodesics on the hypersurfaces.

李乌菲尔(Liouville)应用雅各比(Jocobi)的方法,利用曲面有等温参数时线性元素的特殊形式,很简单地积分就求出了短程线之有限方程。本文将此结果推广于四维空间,得到了下述结果。结果超曲面之线性元素可以写成其中(),P仅为u之函数;,Q仅为v之函数;,R仅为w之函数。则超曲面上短程线之有限方程: 其中依次为短程线与参数曲线u,v,W之夹角。

This note gives an extensive generalization of the Mobius-Rota inversion formulae that may be stated as the following, THEOREM. Given m locally finite posets St (i=1, ...,m) each having a minimal element. Then for every reciprocal pair of u functions, {u, u}, defined withni the incidence algebra A(S1 x .. X Sm), we have a pair of reciprocal relations. where xy, S1 X .. XSm,and f and g as well as u and u take values in a field F. (X=(x1, "', xm), (y=(y1, "', ym), Xt, yt St ). In general the reciprocal u functions...

This note gives an extensive generalization of the Mobius-Rota inversion formulae that may be stated as the following, THEOREM. Given m locally finite posets St (i=1, ...,m) each having a minimal element. Then for every reciprocal pair of u functions, {u, u}, defined withni the incidence algebra A(S1 x .. X Sm), we have a pair of reciprocal relations. where xy, S1 X .. XSm,and f and g as well as u and u take values in a field F. (X=(x1, "', xm), (y=(y1, "', ym), Xt, yt St ). In general the reciprocal u functions may be defined by where each t(t) = stands for a formal power series xvith coef- ficients in F, and with (t)-1 as its formal inverse, and each t (St x St-->F) is a function of the incidence algebra A(St) having an annihilating property that for every segment [x, y] of Si there is a number N (depending upon x, y) such that for k N we have (x, y)=0, 0 being the zero element of F. Moreover, the zero power has to be defined by = , , being the - function of A(St ). Various consequences and possible applications of the theorem have been indicated.

本文在关联代数 A(S1×… × Sm)上引入互反u函数偶概念,从而给出了mobius-Rota反演定理的一种拓广形式,它包括许多有用特款。

Conventionally, owing to the fact that coefficient

传统的u的函数界面反演方法中,因为要在迭代过程中重复计算系数,且因反正切函数tg~(-1)x的计算时间太长,使得界面反演时耗时过多。本文从u函数本身的特点出发,导出了u函数在频率域中的计算方法;讨论了在频率域中利用u函数进行界面反演的方法。经模型计算,证明本方法比原来的u函数计算法具有快速、高精度的优点,是一种在实际中值得推广的方法。

 
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