极值

本文利用平稳随机过程的穿越分析和极值的概率分析，给出了计算VONMISES应力过程峰值概率密度函数的公式，为进一步进行疲劳损伤及寿命分析打下了基础。

Based on the threshold crossing analysis and the peak distribution analysis of stationary random process , the general expression for the peak probability density function of a Von Mises stress process is described .

对K型节点在承受基本载荷作用下的应力集中系数进行了数值和试验分析，得到了各种基本载荷作用下K节点沿着焊缝处应力分布情况和极值应力点的位置。

In this study , numerical and experimental analyses of the SCFs of tubular K-joints subjected to basic loadings were conducted . The stress distributions along the weld toe and the corresponding locations of the peak SCF values of the K-joints subjected to different basic loadings were obtained .

河南省气象中心表示，截至7月20日17时，郑州24小时平均降雨量457.5毫米，超过有气象记录以来极值。

Zhengzhou received average precipitation of 457.5 mm within 24 hours to 5 pm Tuesday , the highest daily rainfall since the weather record began .

区间值和Fuzzy值泛函的条件极值的变分问题

Condition Extremum Variation on Interval and Fuzzy Valued Functional

本文以社会总费用即投资，运行费和事故损失费的总和最小为目标，采用连分式极值有理法，对GIS变电站绝缘配合的优化设计进行了研究。

This paper studies the optimization design of insulation coordination in GIS .

遗传算法的全局搜索能力弥补了BP算法的不足，使BP网络能跳出局部极值，而且缩短了网络的训练时间。

The global search ability of GA covers the shortage of BP network , and save the training time .

GaN发光二极管表观电容极值分析

Analysis of the Apparent Capacitance Extremum of GaN Light - emitting Diode

线性空间中具有集到点映射的向量极值问题的Lagrange乘子定理

Lagrange multiplier theorem of vector extremal problems with set-into-point maps in linear spaces

一类快速扩散方程解的积分型极值原理及其在区域边界上的blowup

An Integral Type Maximum Principle and Blow up on the Boundary of the Solution for a Fast Diffusion Equation

风险值VaR的极值估计

Extreme Value Estimation of Value-at-Risk

基于极值理论和Copula的灾难风险建模研究

Study on synthetical models for catastrophe based on EVT-Copula method

本文从信息熵概念着手，利用信息熵的极值性质导出了Boltzmann分布律。

The paper derives Boltzmann distribution law in terms of the principleof maximum information entropy .

首先对极值理论和柯尔莫诺夫-斯米尔诺夫检验进行介绍，然后将极值理论用到MIMO雷达的目标检测中。

After introducing the extreme value theory and kolmogorov-smirnov statistical test , we use this theory to detect target in MIMO radar .

关于Pareto极值问题

On Pareto Extremum Problem

关于二次抽样方案的ASN的极值

On the extreme values of asn 's of double sampling plans

基于面积重构H操作算子的hat变换，提出了一类用于极值区域提取的新型图像处理方法：面积重构H顶变换及其改进变换。

A novel image processing method used for extreme area extraction is proposed on the basis of hat-transform of area reconstruction H operator , area-reconstruction H-dome transform and its improved transform .

利用泛函极值满足的Euler方程，解出了线性谐振子的基态能量和波函数。

The ground state energy and the wave function of a linear harmonic oscillator are solved by Euler equation comforted to functional extremum .

一类（QL）型随机微分方程极值解的存在性

On Existence for Extremal Solutions of a Class ( QL ) type SDE

用Gumbel极值分布推算气候极值的方法

The methods of computing climatic extremes using Gumbel extremal distribution

利用二阶导数给出了用Lagrange乘数法求出的解是条件极值问题的极小值解的一个充分条件。

A sufficient condition of second order is given for that solutions given by the Lagrange multiplier method are minimal solutions of the conditional extremum problem .

模极值逃逸时间算法构造M-J混沌分布图

M-J Chaotic Distribution Images From the Extreme Modulus Escaping Time Algorithm

本文正是应用极值理论和下界VaR方法对国内的股票市场和期货市场的风险进行了实证研究，并针对国内市场的风险特征提出了风险管理的建议。

In this paper , the VaR bound method and EVT method are applied to study the risk of domestic stock market and the risk of domestic future market .

基于极值理论和Bootstrap方法的E-VaR研究和实证分析

Extreme VaR and its Empirical Analysis Based on EVT and Bootstrap Method

为克服预测模型中BP神经网络本身易于陷入局部极值的缺点，本文提出多次重复预测方法和阈值处理方法修正预测结果，从而极大地提高了预测的精度和稳定性。

In order to overcome the shortcoming of BP neural network , this article proposed duplicates forecast method and the threshold value processing method revise forecast result , thus enormously increased the forecast precision and the stability .

本文用Lagrange乘子法把求解结构可靠指标的条件极值问题转化为无条件极值问题，对目前已被应用的迭代公式给出了理论证明；

In this paper , the problem of conditional extreme-value of solving structural reliability index is transformed into the problem of non-conditional extreme-value by use of Lagrange Multiplier Method .

同时，建立了向量极值问题的向量值Lagrange对偶，其中包括弱对偶定理，强对偶定理，逆对偶定理。

At the same time , vector-valued Lagrange duality of vector extremum problems are established , including weak duality , strong duality and converse duality theorem in linear space .

分析了Hough变换的特点，并研究了Hough变换域极值点参数的特点，改进了Hough变换在道路目标检测中的应用。

From analyzing the characters of Hough transform and researching on the parameters of Hough transform , we ( improve ) the Hough transform in road detection .

改进后的算法在一定程度上对传统PSO算法所存在的容易陷入局部极值的问题进行了改善，从而使算法的解质量、搜索效率和收敛速度都得到了提高。

The improved algorithm can reduce the possibility of falling into the local extremum for traditional PSO . Therefore the solution quality , search efficiency and convergence rate are all enhanced .

用Matlab编程实现了图像数据的读取，设计了图像重建处理过程包括坐标变换、RGB颜色表示法和极值化处理，并用VTK编程实现可视化。

Reading the image data was implemented by Matlab program . The image reconstruction process was designed including coordinate transformation , RGB color representation and min-max normalization .

Maxwell-Boltzmann方程非负解的极值原理和渐近性质

Maximum principles and asymptotic behaviors of the non-negative solution for Maxwell-Boltzmann equation