The expected value of a positive integral power of a random variable. The first moment is the mean of the distribution.
矩，动差任意变量的正整数功效的期望值。第一个矩是分配的平均数。
Objective To explore the effects of different doses of chloroquine on the astrocytes cell cycle, morphology and GFAP-positive integral optical density in the brain of rat with seizures.
目的探讨不同干预剂量氯喹对慢性致痫大鼠脑内星形胶质细胞增殖、细胞形态、星形胶质细胞酸性蛋白（GFAP）表达情况的影响。
As an integral part of learning, it brings about positive changes, making people develop and grow.
作为学习的一个组成部分，它带来了积极的变化，使人发展和成长。
Sampling rate conversion methods of integral ratio, fractional ratio, and NCO controlled positive real ratio are investigated.
文中分析了整数倍、分数倍和NCO控制的正实数倍的采样率变换方法。
In this paper, we give the conditions of existence of positive almost periodic type solutions for some nonlinear delay integral equations.
本文利用不动点理论，给出了一类非线性延迟积分方程正的概周期型解的存在性条件。
This paper analyses the influence of end constraints, side displacement, positive and negative symmetric buckling form on integral stability of gantry crane's supporting legs.
本文分析了门式起重机腿端约束，侧移及正、反对称屈曲形式对支腿整体稳定性的影响。
The fifth chapter makes a positive research about four modes of asset -restructuring performance, ownership transfer, purchase and mergers, integral and divestiture assets and equity sale.
第五章分别对资产重组的四种主要方式，即股权转让、收购兼并、资产置换和资产剥离与所拥有股权的出售绩效做了实证研究。
Applying fixed points theorem, we give the sufficient conditions of the existence of positive ergodic solutions for a class of infinite nonlinear integral equations.
利用不动点理论，给出了一类非线性积分方程正的遍历解存在的充分条件。
These disadvantages could be eliminated in three-phase systems if the energy account based on the integral of the active power of the positive sequence component with the fundamental harmonic.
在三相系统中，以正序基波功率的积分作为计量标准，同样可以消除这两方面的不利影响。
As an application, some existence results of positive almost periodic solutions for delay integral equations are obtained, which generalize the existing results.
应用该定理，给出了一类时滞积分方程的正概周期解的存在性结果。
But there seems to be a positive correlation between the integral radial velocities and the rotational angular velocities of the two kinds of filaments.
这两类暗条的整体视向速度和旋转角速度之间似乎存在着正的相关性。
By using fixed point theory, in this paper we study the existence of triple positive solutions for a class of second-order differential equations with integral boundary conditions.
运用不动点定理，研究了一类带积分边界条件的二阶微分方程三个正解的存在性。
Finally the main results are used to establish some existence results for positive solutions of integral boundary value problems for ordinary differential equations.
把所得结果应用于研究常微分方程积分边值问题正解的存在性，所得结果推广和本质上改进了马如云等作者最近的一些结果。
The author discusses a class of general of singular boundary value problems by using the first integral method, and the necessary and sufficient condition of positive solutions was obtained.
运用首次积分法讨论了较广泛的一类常微分方程边值问题，得到了正解存在的充要条件。
And then the eigenvalue problem of integral equation is transformed into the standard eigenvalue problem of a positive definite matrix with infinite order.
进而将积分方程形式的特征值问题转化为无穷阶正定对称矩阵的标准特征值问题。
In this paper, it gives a criteria of convergence of infinite integral about the positive function and expands it on the defect integral.
主要探讨了从函数自身的性质判定无穷积分敛散性的方法，并将其推广到瑕积分。
Using method of integral regression, effect of varying amounts per factor on annual yield and period of positive or negative effect during each growing stage of grasses were given.
用积分回归法分析了牧草生长发育各时段单位因子变化量对年产量的影响程度及正负效应时段。
The APN has an integral role in program design and can assist in achieving positive patient outcomes.
已在APN的一个不可分割的作用，程序设计，可以帮助实现积极的对患者的治疗效果。
Positive reinforcement is an integral part of the learning process.
正强化是学习过程不可分割的一部分。
Positive reinforcement is an integral part of the learning process.
正强化是学习过程不可分割的一部分。
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