查询词典 estimate

This paper reviewed the advances in honeybee breeding involving to estimate the numbers of subfamilies in a colony and analyze the genetic correlation among workers; guess the polyandry level of queens and identify the purity of a subspecies; build a linkage map and discriminate loci of quantitative traits; genotype and distinguish full sister from semi sisters; analyze the trend of sperm to inseminate an egg and so on by means of such molecular biotech as microsatellites DNA, mitochondria...

综述了应用微卫星 DNA技术、线粒体 DNA技术、随机扩增多态性 DNA、聚合酶链式反应和 DNA指纹等分子生物技术所进行的蜜蜂育种研究现状。其应用主要包括估计蜂群内亚家系的组成数目和分析工蜂间的遗传相关，推断蜂王的多雄水平和鉴定蜜蜂种性，构建连锁图和区别数量性状位点，鉴定基因型和区别全胞、半胞姐妹以及分析精子受精力的倾向性等

Based on modern option pricing theories,Black-Scholes and Merton option pricing model are used to study the pricing of the structured products,and its design,characteristics and risk are studied respectively.Based on Black-Scholes and Merton option pricing models,I also use the checking method to estimate the parameters of the model following real prices data,And calculate the theoretical price.Then,I compare the real and theoretical prices of the two pricing models.The results show that the effects of the Merton option pricing model are superior to the Black-Scholes option pricing model.Moreover,It shows that Hong Kong stock prices are also affected by the instant messages,and the jump phenomenon may exist in Hong Kong stock market.

本文以香港衍生品市场上三种主要结构性产品结构性票据、牛熊证和衍生权证为例，探讨了结构性产品的设计、特点、风险和定价，以现代期权定价理论为基础，以B-S和Merton两种期权定价为基础，根据市场价格经过校验得出模型隐含的参数，编程计算出两种定价模型下的理论价格，并将其实际价格和理论价格进行了比较，结果显示：Merton定价模型的效果要优于Black-scholes定价模型，说明香港市场的股票价格也可能受即时信息的影响，存在跳跃现象。

The main ideas are as follows. 1. To estimate instantaneous speed and angle position when angular sampling can not used, some methods have been analyzed firstly.

为此，本文分别采用计算阶比分析、广义多相干分析和径向基函数网络等方法，来解决旋转机械变速过程中的信号预处理、特征提取和烈度监测等问题。

On the basis of this,an observer is constructed to estimate the instantaneous velocity of a motor.

在此基础上提出了一种速度观测器以估计电机的瞬时速度。

For convex domains of strict finite type, we use the pseudodistant constructed by McNeal to estimate the kernel of integral representation formula of d-bar.

对于一般的严格有限型凸域，我们使用McNeal构造的拟距离来估计d-bar方程解的积分表示公式中的核。

The integral inequality is a useful tool when we study the stability theory of differential equation, especially when we study the stability, the estimate of solution and the boundedness of differential equation.

在研究微分方程稳定性理论中，尤其在探讨微分方程的稳定性，解的估计及有界性的过程中，积分不等式是一强有力的工具。

To fill this gap, the enhanced Poincaré inequality was obtained by considering the additional conservation law of momentum and by rigorous estimate of integral inequality.

为解决这个差异，利用周期带域上的Eady模型的动量守衡的性质，通过变分方法和积分的精细估计，建立一个加强的Poincairé积分不等式，从而证明了Eady模型的线性稳定意味着非线性稳定。

Firstly, Wavelet-Galerkin algorithm for solving the first kind of singular integral equation with the Hilbert kernel is proposed, we use the characteristic of periodic wavelet on L~2([0,1]) and Hilbert kernel to solve and make stiff matrix lower dimensions and become sparser through thresholding,thus the cost of computation is reduced. Because of the singularity of Hilbert kernel we use Tikhonov regularization method to solve the system of stiff equation. At last the convergence and numerical result of approximate solution are given. Secondly, an approach of regularization based on Fourier is presented for sideways heat equation; we give the theory proof and error estimate.

首先，提出了含Hilbert核的第一类奇异积分方程的小波伽辽金(Wavelet-Galerkin)数值算法，该算法中利用了L~2([0，1])上的周期小波和Hilbert核的特点进行处理，使得刚性矩阵维数降低并且通过阈值使得它更加稀疏，减少了计算量；由于Hilbert核的奇异性，通过Tikhonov正则化方法求解所得到的刚性方程组，给出了收敛性和数值结果；其次，对标准的一维逆热传导方程给出了一种基于Fourier正则化方法，给出了理论证明及其误差估计，解决了文献中算法与理论误差估计的不相匹配的现象，该正则化方法不仅保留了测量数据的部分高频成份，且与文献中的算法具有同样的计算量和误差估计。

We study its integral representation , estimate of coefficients,maximum modulus estimates.

本文引入了某族定义在单位圆内的解析函数，研究了它们的积分表示，系数估计，最大模估计及其子族的Fekete－Szego不等式，获得了一些较有关文献更一般的结果。

This paper considers weighted estimate s of polynomial operator spectra by using the methods of integral,Rayleigh theorem and Schwartz inequality and establishes the inequality of upper bound of the(n+1) spectrum by depending on the former n spectra and the estimated coefficient is independent of the measure of the domain.

考虑多项式算子谱的带权估计，利用分部积分、Rayleigh定理、Schwartz不等式等方法，建立了用前n个谱来估计第n+1个谱的上界的不等式，且其估计系数与区域度量无关。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。