second moment

1. Red education as a new way of ideological and political education, it has some characters, such as variety of forms, abundant of resources, intuitivism, vividness, and so on. It is established on the basis of Linear Second Moment theory.
   红色教育作为大学生思想政治教育的一种创新途径，具有形式多样、资源丰富、直观生动等特点。
2. Local Invariant Feature Extraction Base on Salient Measurement of Second Moment Matrix
   基于二阶矩显著性估算的局部不变特征提取
3. Reliability Design of Cylinder Vessels with Internal Pressure Based on the Second Moment Method
   基于二阶矩法的内压圆柱壳可靠性设计
4. Practically, the application of options implied second moment, implied volatility, is very popular, but the study of implied third moment, skewness, and fourth moment, kurtosis, is seldom.
   实务上，选择权价格所隐含之二阶动差（即波动率）应用得非常普遍，但有关所隐含三阶动差（偏态）及四阶动差（峰态）之研究则较为少见。
5. A new method of slope reliability analysis was presented which combined the support vector machine ( SVM) and first order second moment ( FORM).
   将支持向量机与一阶二次矩方法结合，提出了边坡可靠性分析的支持向量机方法。
6. This paper inquires into the problem of finding an upper bound for the expectation of recourse function when only first and second moment 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。
7. This method perfects primary second moment method and extends its field of application.
   因此本方法更加完善了一次二阶矩方法，拓展了其应用前景。
8. The calculational formulas of M2 factor are described by the ratio of mode field half widths defined by second moment and differential operator in near field, or the the ratio of far field divergence half angles defined by second moment and differential operator.
   M2因子的计算公式可表述为以二阶矩和微分算子定义的近场模场半宽度的比值，或以二阶矩和微分算子定义的远场发散角半宽度的比值。
9. The posterior distribution of the reliability of the subsystem can be obtained using the system prior distribution,. The first moment and second moment of the system can be acquired by that of the subsystem.
   利用系统的后验分布确定各分系统的先验分布，再通过各分系统的一阶、二阶矩综合获得系统的一阶、二阶矩，在此基础上进行系统可靠性分析计算。
10. On the other hand, the moment, the second moment and variance of the present value random variables about some life annuities and annuities with random interest rate are gotten.
    另一方面讨论了随机利率下的一些离散年金、连续年金和连续生存年金现值随机变量的一阶和二阶原点矩及其方差。
11. Computation method for structural point reliability is described in detail and analysis on improved simple second moment method, JC method, geometric method, high order moment method, response surface method, Monte Carlo method and stochastic finite element method are conducted.
    详细阐述了结构点可靠度计算方法，对改进的一次二阶矩法、JC法、几何法、高次高阶矩法、响应面法、蒙特卡洛法、随机有限元法等方法进行了分析。
12. The mixed FEM-First order second moment method is introduced to calculate the reliability index and the substructures model is used for failure analysis of structural system. Several special uncertain random variables for offshore structures are considered.
    在构件可靠性指数分析中提出了有限元一阶二次矩方法和系统失效分析中的子结构模型，对海洋平台结构的若干个重要的不确定随机变量作了讨论。
13. An advanced first order second moment method
    一个推广的一次二阶矩方法
14. Based on reliability testing data of each unit, using the first moment and the second moment of system reliability fitting with system reliability distribution, a new reliability assessment method is presented for series and parallel system.
    根据单元短路和断路故障的可靠性试验数据，采用系统可靠性一阶矩和二阶矩的拟合方法，提出了串联系统和并联系统可靠性评定的方法。
15. In this paper, we analysis the defects of least variance method, and advance a least second moment method of the futures hedging.
    在本文我们分析最小方差法存在的缺陷，提出了套期保值的最小二阶矩方法。
16. The first and second moment, and the probability density function ( PDF) of cross spectrum estimation are proposed.
    给出了互谱估计一、二阶矩和一维概率密度函数。
17. Application of MFOSM ( mean first order second moment) method to non-sudden risk analysis of water quality
    均值一次二阶矩法在水质非突发性风险分析中的应用
18. The aim of this paper is to establish a law of the iterated logarithm for non stationary weakly negatively associated random vectors in R p under the finite second moment.
    本文研究了Rp中非平稳弱负相关随机变量的极限性质，在有限二阶矩条件下获得了重对数律的结果。
19. The advanced first order and second moment iterative method are employed for calculation on reliability index and failure probability.
    采用改进的一次二阶矩法对腐蚀管道的可靠性指标和失效概率进行了分析和计算。
20. The checking computations of foundation reliability, including bearing capacity and settlement, is conducted on the basis of the theory of first-order second moment.
    依据可靠性的一次二阶矩理论，验算地基承载力和沉降这两个方面的问题。
21. We set up a general master equation, and then obtain the steady-state photon-number distribution according to the principles of the detailed balance. Furthermore, the variation of the normalized second moment with pump parameter is calculated numerically.
    首先建立了一般形式的主方程，然后根据细致平衡原理得到了稳态光子数分布，进而对归一化二阶矩随泵浦参量的变化进行了数值计算。
22. Simple second moment probabilistic approach is used to carry out calibration computation and analysis on reliability index of component strengths in current "Water Conservancy and Hydropower Project Steel Gate Design Code".
    采用一次二阶矩的近似概率法，利用统计分析所得的数据，对现行《水利水电工程钢闸门设计规范》中的构件强度可靠指标进行了校准计算和分析。
23. Further-more, the variation of the normalized second moment with pump parameter is calcula-ted numerically.
    进而对归一化二阶矩随泵浦参量的变化进行了数值计算。
24. The second moment creep time of DZ4 superalloy rapidly decreases with the increasing of temperature and stress.
    随着温度的升高和应力的增加，DZ4合金蠕变第二阶段的时间迅速减少。
25. The second moment is the philosophical investigation of both practice and politeia.
    第二个环节是对实践和政治体的哲学考察。
26. The reliability of brittle fracture at the weld toes of the convex cone cylindrical shell of the submarine was calculated using First Order Second Moment method and the Monte Carlo method.
    应用一次二阶矩法和蒙特卡洛法计算潜艇凸锥柱结合壳焊趾处的脆性断裂可靠度。
27. The dynamic reliability of the grillage structure subjected to impulse loading was analysised by employing the improved first order second moment method.
    给出板架结构在冲击载荷作用下的功能函数和极限状态方程，采用改进的一次二阶矩法分析了板架结构在冲击载荷作用下的动力可靠性。
28. ( 4) A local invariant feature based on salient estimation of local second moment matrix is proposed.
    提出了基于显著性估算的局部不变特征提取方法。
29. Advanced First-Order Second Moment ( AFOSM) calculating software is programmed.
    运用改进一次二阶矩法（AdvancedFirst-OrderSecondMoment-AFSOM法）的基本理论，编制了相应的计算程序。
30. There were 7 characteristic parameters of Hu moments in shape feature. And 4 characteristic values of texture feature were picked up such as second moment, moment of inertia, inverse difference moment and grayscale correlation. 4.
    形状特征提取出了Hu矩的7个特征参数；纹理特征提取出二阶矩、惯性矩、逆差矩和灰度相关性的4个特征值。

noun

1. the expected value of the square of the deviations of a random variable from the point of origin