一阶矩的英文

first moment

• 一:    one
• 阶:    steps; stairs
• 矩:    carpenter's square ...

例句与用法

更多例句：  下一页

1. This paper inquires into the problem of finding an upper bound for the expectation of recourse function when only first and second momen t constraints are available
   探讨了在随机向量的一阶矩和二阶矩条件下，寻找补偿函数的期望值的一个上界的问题
2. In this paper we use pointwise modulus of smoothness ( f , t ) to study approximation direct theorem and equivalent theorem for some linear operators and quasi - interpolant operators ; using pointwise modulus we discuss the strong converse inequality on k - functional ; and using a modified weighted k - functional and weighted modulus of smoothness we study approximation with jacobi weight on operator with non - zero first order moments
   本文利用点态光滑模_ ( ~ ) ~ ( 2r ) ( f ， t )来研究某些线性算子及逆中插式逼近正定理和等价定理；利用点态光滑模讨论其关于k -泛函的强逆不等式；同时利用一种改变的带权k -泛函和带权光滑模研究一阶矩不为零的算子的点态带jacobi权逼近。
3. Result shows , the uncertainty of parameter leads to negative ( positive ) investment horizon effects when investor ' s risk aversion is more ( less ) than that of logarithmic utility ; the effects of parametric uncertainty will weaken when investor uses more past data in his estimation , or when his risk aversion increases ; the effect of the first order moment ' s uncertainty is stronger than that of the second order moment ' s uncertainty
   研究表明，当投资者的风险规避程度大于（小于）对数效用时，参数不确定性将导致负（正）的投资期效应；当投资者在估计过程中运用较多的历史数据、或者风险规避程度增加时，参数不确定性的影响将减弱；收益一阶矩的不确定性影响较其二阶矩强。
4. In order to analyze the effect of aberration of amplitude and phase of laser beam on centroid position of focal spot , based on the fraunhofer formula for light wave scaler diffraction theory , according to the definition of first order moment centroid position , the general expression of focal spot centroid position directly depending on the complex amplitude of near field is derived
   摘要为分析振幅和相位发生畸变情况下光束焦斑质心位置所受的影响，以光波标量衍射理论中的夫琅和费衍射公式为基础，根据光斑强度分布一阶矩质心位置的定义，推导了直接依赖于光束近场复振幅分布的焦斑质心位置的一般表达式。
5. Secondly , using the relation between the weighted modified k - functional , the weighted modulus of smoothness , the weighted main - part modulus of smoothness . we get the pointwise direct and inverse approximation theorem with jacobi weight for s ' zdsz - kantorovich operator . thus some results on w ( x ) = 0 ( w ( x ) denotes the weight function ) , ditzian - totik modulus and classic modulus are extend
   其次，引入一种改变的带权k -泛函，利用带权光滑模和带权主部光滑的关系及带权光滑模与改变带权k -泛函的等价性，关于sz sz - kantorovich算子，讨论了一阶矩不为零的算子的点态带jacobi权逼近正定理及等价定理，推广了已有的权为零及ditzian - totik光滑模和古典光滑模的结果。