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Second, we research the Baum-Welch algorithm of modified HMM and derive the update parametric estimation equations for modified HMM based on traditional HMM.

其次，在传统的隐马尔可夫模型的基础上，研究了改进的模型的前向-后向算法和Baum-Welch算法，并导出了改进的模型的参数估计公式。

Properties of bi quadratic B spline surface are investigated by the subdivision approach, and the control mesh of bi quadratic B spline surface is constructed by employing Doo Sabin subdivision to derive the parametric representation of interpolation surface.

文中利用子分曲面理论研究双二次 B样条曲面的性质，在此基础上利用 Doo- Sabin子分模式构造插值顶点位置和法向的双二次 B样条曲面控制网格，得到插值曲面的参数表示。

One of the important contributions of this chapter is that we derive all explicit parametrization of strong robust H〓 measurable feedback control laws of any order.

这为研究含不确定参数的时滞线性系统的鲁棒H〓控制问题提供了一种新的方法。

Especially, combining with the weighted polar decomposition and simultaneous weighted polar decomposition of matrices given in this thesis, we derive two interesting characters of the new matrix partial ordering.

特别地，与本文提出的矩阵加权极分解和同时加权极分解相结合得到了两个有意义的结论。

The paper researches how to derive features automatically and how to match image perceptual similarity as well as possible.

图像特征提取技术和相似性度量技术都属于基于内容的图像检索技术的核心问题。

In Chapter 3,we classify a binary-coded individual space equivalently withthe help of the ideals of Boolean algebra and analyze the search capabilitiesof a new kind of algebraic crossover operator in these equivalence classes,thenprovide the algebraic representation of a type of genetic algorithms by usingthe permutation group,therefore we can derive a lot of new forms of geneticalgorithms.

第三章运用Boole代数的理想将二进制编码的个体空间进行等价分类，分析了一类代数杂交算子在这些等价类上的搜索能力；然后利用置换群给出一类遗传算法的代数表示，由此导出多种新形式的遗传算法，并给出其中两类算法形式的收敛性结果。

Agency Hypotheses Agency hypotheses assume that managers derive utility not from the stock price but also from perquisite consumption and firm size.

代理假说，代理假说认为管理者获得来自股票价格不实用，也从消费、细致、周密。

In chapter five,we study a general cosine－forced stochastic system and derive the equilibrium time correlation function using the perturbation theory and the linear response theory respectively.

在第五章中，我们分别用微扰理论和线性相关理论研究了有余弦周期信号输入的随机系统的动力学量的平衡时间关联函数。

Yin-Yang is a very important theory in the history of Chinese philosophy. The elements of yin-yang theory emerged very early and were implied in astronomy observation and phallicism in ancient China.We will see that the two elements of "yin"and "yang" obviously derive from man and women.

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The emission of light that does not derive energy from the temperature of the emitting body, as in phosphorescence, fluorescence, and bioluminescence.

发冷光：不是由于发光体的热量而来的光的发射，比如在磷光，荧光和生物性发光中。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。