利用矩法分析了飞秒光脉冲的传输特性。
The transmission properties of femtosecond optical pulse are analyzed with the momentum method.
用一次二阶矩法分析结构可靠度需要反复迭代求解。
For structural reliability analysis calculation. Rackwitz and Fiessler Method has to employ iteration.
采用改进一次二阶矩法分析单个夹杂裂纹扩展的可靠性。
The reliability of the fatigue crack growth life of single inclusion is analyzed by the advanced first order and second moment method.
对其中的参数分别用极大似然法和改进的矩法进行了估计。
The distribution parameters have been estimated with either the maximum likelihood method or a modified moment method.
经验频率采用规范中推荐的公式计算，统计参数用矩法公式计算。
The experiential frequency is calculated with formula recommended in the standard, and statistical parameters are calculated with matrix formula method.
在此基础上提出一种基于线性矩法的熵估计方法(POMELM)。
A new parameter estimation method (POMELM) based on POME and L-moment is proposed in the thesis.
在一次二阶矩法的基础上，推导了计算模糊随机可靠度的具体公式。
Study on Fuzzy Random Reliability of Existed Civil Buildings and Appraisal Program Designing;
初始缺陷和强度参数为设计变量，采用一阶矩法计算单元层的失效概率。
The initial imperfection and the strength parameters are considered as random variables. Ply-level failure probability is evaluated by the first order reliability method.
利用一次二阶矩法，计算了一座八层配筋空心砖房屋的开裂和倒塌概率。
By using of the second-moment method the cracking and collapse probabilities of a hollow brick-wall building of 8 storey with consideration of elasticity of foundation are calculated.
线性矩法在水文频率分析中具有理论优势，但因为计算复杂而实际应用较少。
The L-moment method has theoretical advantages in hydrologic frequency analyses, but less practical application because of its complexities in calculation.
现有基本的结构可靠度计算方法可分为一次二阶矩法、蒙特卡罗法和响应面法。
The present usually reliability analysis method for engineering structures are Monte Carlo Simulate (MCS), First-order Second-moment method (FOSM) and reliability Surface method (RSM).
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。
The advanced first order and second moment iterative method are employed for calculation on reliability index and failure probability.
对预处理后的木材图像分别用颜色直方图法、颜色矩法提取了木材表面的颜色特征。
The wood surface color characters of wood images after preprocessing are abstracted with the methods of color histogram and color matrix.
统计试验结果表明，修改后的双权函数法无偏性方面优于矩法，有效性与矩法相当；
The Monte Carlo simulation shows that the present method is better than the Method of Moment (MOM) in unbiasedness, and is generally comparable to MOM in efficiency.
后者既包括基于广义帕雷托分布（GPD）参数的极大似然估计，又包括矩法估计等。
The latter since include maximum likelihood estimate of the GPD(generalized Pareto distribution ) model parameters to still include moment estimate etc.
基于可靠度理论，本文采用一次二阶矩法(JC法)对疲劳裂纹扩展可靠性进行计算。
Based on reliability theory, the first order second moment method (JC method) is adopted to analyze and compute the fatigue reliability.
针对一次二阶矩法可靠度指标分析中验算点的计算问题，提出一种新的修正迭代算法。
A new iterative algorithm is presented for seeking the design point in the FOSM reliability index analysis.
在历史洪水存在不确定性情况下，以概率权重矩法估计的参数稳健性优于优化适线法。
Moreover, under the situation of uncertainties in large historical flood, the quantities estimated by probability weighted moments may be more robust than those by a optimal curve fitting method.
本文引进了局部分布、局部矩、局部矩法估计、样本局部矩和局部分布的矩确定等概念。
In this paper, some new concepts on the local moment, local distribution and the method of the local moment estimation are proposed.
通过对模型中的参数进行模糊化处理，用改进一次二阶矩法计算了地下水过量开采的模糊风险率。
The parameters of the model are fuzzily processed and the fuzzy risk can be evaluated by using the modified first order second moment method.
通过假想水文资料检验这一方法，并与矩法的估计值相比较，结果表明本文提出的方法优于矩法。
The verification using ideal hydrographic data shows that the proposed method is better than the moment method.
由求解失效概率的改进一次二阶矩法出发，给出了失效概率对中间变量分布参数偏导数的计算公式；
On the basis of the advanced first order and second moment method, the partial derivatives of the failure probability to the distribution parameters of the process variables were formulated.
然后建立去除复杂实际背景和自适应二值化的动态图象预处理模型，并根据矩法搜索和求取目标质心；
Secondly, Deleting background model and binarization model are established, and the mass center of object is searched and computed based on method of moment.
为提高数字太阳敏感器的角度测量精度，降低计算量，提高运算速度，选用矩法进行太阳成像质心的估算。
The moment method was used to estimate the centroid in a digital sun sensor to increase the angle measurement accuracy and computation speed.
一次二阶矩法是目前求解结构可靠性分析的主要计算方法之一，该方法要求功能函数对随机变量的偏导运算。
Reliability analysis using First Order Second Moment (FOSM) is important for structural probability design, in which process demands the derivative operation.
基于由Ditlevsen给出的广义可靠指标和一次二阶矩法，提出了一个简捷的结构可靠度计算方法。
Based on the generalized reliability index given by Ditlevsen and the first order second moment method, a simplifed calculating method on structural reliability is presented.
在受力最大的情况下，通过可靠度理论(改进的一次二节矩法)对简化模型进行可靠度分析，得到了可靠度指标。
In case of maximum force, reliability index can be produced by analyzing reliability of simplified model with reliability theory (improved FOSM).
目前常用矩法估计瞬时单位线，据此还原的洪水过程与实测洪水过程之间，特别是洪峰点之间，常具有明显的差别。
The difference is obvious between the computed flood hydrograph according to the traditional method and observed flood hydrograph, especially flood peak.
一次二阶矩法可以方便用于功能函数为显式表达的情况，但对于可靠性要求较高的结构，其计算精度有时不能满足工程需要。
FOSM is usually used for the explicit performance function, and the accuracy of FOSM can not satisfy the engineering requirement sometimes for the structures which have higher reliability requirement.
一次二阶矩法可以方便用于功能函数为显式表达的情况，但对于可靠性要求较高的结构，其计算精度有时不能满足工程需要。
FOSM is usually used for the explicit performance function, and the accuracy of FOSM can not satisfy the engineering requirement sometimes for the structures which have higher reliability requirement.
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