极值问题

By experiments, it is proved that the parabola method is faster and more precise than the golden section method and the Fibonacci method in searching for extremum of compound pendulum. Furthermore, the method can offer some references for the study of other extremum in physics.

文章通过实验采集数据并加以分析，证明了抛物线法搜寻复摆极值点比黄金分割法和Fibonacci法有更好的搜寻效果，并且该方法对于搜寻物理学中其它极值点问题具有参考价值。

But the optimizing problem of a real scalar function g where z and its conjugate z* are complex variables frequently arises in adaptive signal processing.

但是，在自适应信号处理中经常会遇到一类以Z为复自变量的标量函数g求极值或条件极值的问题。

This paper considers existence of extreme solutions to first-order differential equations with a parameter by the method of lower and upper solutions with monotone iterations,and monotonic sequence is uniformly converged to the extreme value solution of nonlinear equation after being constructed.

文章利用上下解方法和单调迭代技术讨论了含有一个参数的微分问题极值解的存在性，通过构造单调序列使这个单调序列一致收敛于非线性方程的极值解。

In POT model, it used the technique of parameter estimator stability, making up for the limits of the currently popularly-used Mean Excess Function e, and the threshold quantitatively selected by Kurtosis Method has also been achieved, and solving the problem the illustration method couldn't be applied to.

特别是，在BMM模型中充分地考虑了子区间极值一般极限分布与极值序列极限分布之间的关系，测度了受子区间长度影响的极值VaR；在POT模型中运用参数估计量稳定性法弥补了目前普遍采用的样本平均超出量函数e法的不足，针对一些图解法无法适用的问题，实现了峰度法对阈值的定量选取，并对指数回归模型法、子样本自助法、序贯法等定量法进行了分析探讨。

Thus far, little has been known for the extreme value distribution of general structural dynamic stochastic responses, except for some special results, say, the Rayleigh distribution in the case of narrow - banded Gaussian stochastic processes.

由于基于首次超越破坏准则的结构动力可靠度问题可以转化为相应动力反应极值分布的积分问题，获取结构动力随机反应的极值分布具有重要的意义川。

Highly efficient and stable method of parameter estimation is built. The fitting degree of extensive extreme value distribution and the extremeⅠ,Ⅱ,Ⅲtype distribution was compared, among which the optimal distribution type are researched.

针对极大似然法参数估计的失效问题，将逐步迭代法推广应用于广义极值分布，建立了参数估计的高效稳定算法，并比较广义极值分布与极值Ⅰ、Ⅱ、Ⅲ型分布的拟合度，研究平均风速的最优分布类型。

Emphases are put on solving the problem of repeating searching extreme points in contours of Gauss curvature drawing,and the improved Bulirsch Stoer contour curve searching method is used in extreme points searching to speed up the searching efficiency.

提出了一种针对非均匀有理 B样条自由曲面的高斯曲率等值线的光顺检测方法，重点解决绘制高斯曲率等值线时出现的极值点的重复搜索问题，并将改进的Bulirsch-Stoer等值线搜索法用于极值搜索中，提高了搜索效率。

In consideration of the problems in logging interpreting subzone water saturation for reserves calculation, Excel subroutine and functions are used to implement the methods of average calculation of pore volume of water saturation, saturation extreme and water saturation extreme and the extreme of pore volume of water saturation.

针对储量计算中测井解释小层含水饱和度的计算问题，用Excel宏命令和函数实现了含水饱和度孔隙体积平均计算方法、含水饱和度极值算术平均计算方法、含水饱和度厚度极值平均计算方法以及含水饱和度孔隙体积极值平均计算方法的功能。

The existence and uniqueness of homogeneous elliptic polyharmonic cardinal spline interpolation are proved, the remainder formula and order of approximation in LP (1≤p≤∞)spaces are given, and the extremal problem of sobolev dass in L2 is considered.

获得Rd上齐次椭圆型Cardinal样条插值的存在唯一性，并获得Sobolev类上的函数在Lp（1≤p≤∞）尺度下的插值误差估计，以及Sobolev类在L2尺度下的一些极值问题的解；拓广了Laplace型的结果。

Each optimizing method has its strong point. On the point of view of math, optimizing for motor design is a process for extremum point for a nonlinear, restricted recessive function. Genetic Algorithms G.A.

从数学角度上来说，电机的优化设计就是一组非线性、有约束条件的隐性函数求极值问题，目前比较成熟的优化方法主要有遗传算法、模拟退火法与Tabu法等，其中以遗传算法应用最为广泛。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。