参数表示

Based on parametrization representation of subdivision surfaces,precise intersection and trimming algorithms are put forward.

基于细分曲面的参数化表示，研究了细分曲面的精确求交、裁剪算法。

For first-order linear DPS with spatial-varying coefficient matrices a method is presented to approximate the system piecewisely by N partial differential equations with constant coefficient matrices.

它包括两大部分，一是关于分布参数系统的频率域数学描述即传递函数这一基本问题的应用研究，二是关于一类用多滞后型传递函数表示的分布系统的控制设计问题。

The gamma function calculation of Pearson type III distribution is investigated,a new approximation method by using cone curve is put forward,and neither numerical integral nor series expansion may be used.

对皮尔逊Ⅲ型分布公式中伽玛函数的计算问题进行了研究，提出了一种新的数值逼近方法，在一定范围内对伽玛函数用圆锥曲线表示，利用递推公式扩大参数范围，免去了数值积分和用级数展开计算的麻烦。

Moreover, the statistical linear regression with fuzzy observation data is discussed. When the parameters of a Tagaki-Sugeno fuzzy system are perturbed with random noise, the system turns to be a stochastic T-S system.

设控制对象是用Tagaki-Sugeno模糊模型表示的非线性系统，当模型参数受到统计特征已知的随机噪声干扰时，就成为一个随机T-S模糊模型，本质上它是一个非线性随机微分系统。

One kind of such information is the geometry about an object in the space. The algorithm to extract such a kind of information usually includes an important procedure called "camera calibration." The purpose of camera calibration is to construct the relationship between the image plane of the camera and the coordinates system of the object space. The relationship is usually represented by a "mathematical function."

此类应用之演算法则中一般包含一重要之程序称为"摄影机校准"，其目的是在建立影像平面与物体空间座标系统间之对应关系，此对应关系以"数学函数"表示，并在校准后得到一组参数，用以代表此摄影机在物体空间座标系统中之"特性"表现。

A neural network is then used to represent the estimation of potentials,both the parameterized TD(0) learning formulas and algorithm are also derived for approximating the policy evaluation.By the approximation values of potentials and approximation policy iteration,a unified neuro-dynamic programming optimization approach is consequently proposed for both two criteria.

根据定义式，建立性能势在平均和折扣性能准则下统一的即时差分公式，并利用一个神经元网络来表示性能势的估计值，导出参数TD(0)学习公式和算法，进行逼近策略评估；然后，根据性能势的逼近值，通过逼近策略迭代来实现两种准则下统一的神经元动态规划(neuro-dynamic programming，NDP)优化方法。

The standard error of a statistic provides an indication of how accurate an estimate it is of the population parameter.

统计量的标准误差表示该统计量作为总体参数的估计的准确程度。

In the traditional PID control parameters for self-tuning algorithm for the introduction of artificial intelligence theory, first of all, the control of human experience expressed as self-tuning algorithm for the primary rules.

在传统 的PID 控制的参数自整定算法中引入人工智能理论，首先将人的控制经验表示成自整定算法主要规则。

Secondly, the sinusoidal model, which is the speech production model used in STC, and its simplified model, harmonic sinusoidal model, are depicted in this thesis. Then, the key techniques, including pitch detection, magnitude model presentation, phase model presentation, voice probability analysis, vector quantization and speech synthesis, are discussed.

然后，本文对STC的语音产生模型——正弦模型与谐波正弦模型进行了系统阐述，并对低码率STC的关键技术，包括基音检测、幅度和相位参数的模型表示、浊音度分析、矢量量化以及语音合成等进行了详细研究。

The difference and relationship among design feature、machining feature and FEM feature are clearly presented. The necessary of feature mapping in product concurrent design system is discussed, and its theory and method are systematically studied.

详细分析了特征信息在产品生命周期中各应用环节的重要作用，揭示了设计特征、工艺特征以及分析特征的本质区别和内在联系，讨论了特征变换的必要性和特征变换的理论方法，指出建立一种柔性的特征表示模型，开发基于约束和参数驱动的特征造型系统，能方便的实现不同应用特征之间的变换，是实现CIM和CE的关键技术。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。