查询词典 descent method

The method using microcomputer to draw the phase graph of autonomous system on plane of ordinarily differential equation is studied,first a large number of data of orbit are obtained by an appropriate method of numerical calculation from known initial condition,then computer draw the curve of orbit on screen by these data.

研究利用微机绘制常微分方程平面自治系统相图的方法，首先用一种合适的数值算法由已知的初始条件得到轨线的大量数据，再利用这些数据在计算机屏幕上画出轨线的图形。

First, based on the mathematics model of comprehensive decision at present, the concept of evaluation function is introduced. Based on the thinking stability of decision-maker, the essential meaning of comprehensive decision model is discussed, therefore, and a new improved approach on the comprehensive decision model is put forward. Second, the mathematics model of interval number comprehensive decision is systematically discussed, and the ranking method of interval number based on the decision-maker's attitude is provided. Finally, the concept of valuation order relation is introduced, the valuation order relation of interval number and fuzzy number are systematically discussed in detail, it provides a new method to research the order relations of interval number and fuzzy number, therefore, these achievements can be applied in the intelligent system.

首先，针对常用的综合决策模型，给出了评判函数的概念，讨论了综合决策模型的本质意义，指出决策者的思维应具有稳定性，从而给出了综合决策模型的一种改进方法；第二，在此基础上，给出了区间数的综合决策模型，并详细讨论了基于决策者的决策心态的区间数的排序方法；第三，引入了赋值序关系的概念，详细讨论了区间数和模糊数的赋值序关系，为区间数和模糊数的序关系研究提供了新的思路与方法，这些均有望在智能系统中得到广泛的应用。

The given estimated values of variables in Newton method is a crucial problem for the final solutions, the solutions of the first order approximation of the Fourier series to land surface temperature were used to the input initial given values of the Newton numerical method.

在牛顿迭代解法中，很关键也很困难的一个问题是初始值的给定，本模型中牛顿迭代的初始值是傅立叶级数对地表温度一次逼近得到的结果。

Secondly, the effectiveness and limitation of the classical perturbation, such as the method of multiple scales and the Poincare-Lindstedt method, are discussed in detail through a Duffing oscillator with delayed velocity feedback. It is shown that the two perturbation methods are effective only in solving the approximate solution of the first two orders. An ambiguity or paradox will be encountered when they are used to seeking for the third or higher order approximation of solution.

其次，以一具有时滞速度反馈的Duffing系统为例，研究了经典摄动法如多尺度法，Poincaré-Lindstedt法等在求解时滞微分方程级数解时的适用性和局限性问题，指出利用这些方法只能有效求得系统的前两阶近似解，而在求系统的三次以上近似解时会出现矛盾或二义性。

In the present paper,the Palaeozoic strata in the Wenduhala region,Xinjiang are chemostratigraphically divided based on the systematic data of spectral semiquantitative analysis obtained from the regional geological survey by means of the optimal partitioning method and the half moving window method for the ordered sample analysis.

本文利用在区调工作中获得的较为系统的岩石光谱半定量全分析数据，采用有序样品最优分割法和对分移动窗口法，对新疆温都哈拉一带的古生代地层进行了化学地层划分，并与野外根据宏观岩性特征划分的岩石地层单位进行了比

First, a new version of discrete ordinate method for surface radiation exchange is developed. To show the validity of the method, it is applied to a few sample problems.

首先，发展一新式的离散方向法以分析表面间的热辐射交换。

Compared with the prior art, the invention has the advantages that the method first identifies the expression of a facial image in video image data, and then drives the organ in a corresponding three-dimensional facial model according to the preset organ driving rule, thereby achieving more vivid animation effect; and the method avoids animation effect deviation caused by the movement detection errors of a single organ characteristic point when the prior art adopts single organ driving.

与现有技术相比，本发明的优点在于：本发明先识别视频图像数据中人脸图像的表情，然后依据预设的器官驱动规则，再来驱动相应的三维人脸模型中的器官，可以达到更加逼真的动画效果；避免现有技术采用单个器官驱动时，由于单个器官特征点的运动检测误差而导致的动画效果偏差。

The paper includes the kinematics of PDC bit, the rock cutting mechanism of a single PDC cutter and multiple PDC cutters, the design theory and method of the spatial orientation of PDC cutter work surface, the arrangement, theory and method for placing PDC cutters onto bit body, and so forth.

研究内容包括PDC钻头运动学、PDC钻头单齿破岩规律、重迭及覆盖条件下PDC切削齿的破岩规律、PDC钻头切削齿工作面空间方向的设计理论及设计方法、PDC钻头设计时的布齿理论及布齿方法等。

The characteristics of line oriented clustering method were studied based on the point oriented clustering method.

在对点聚类的基础上，研究了线段聚类的特点。

Currently the Internet dissemination speed quick, hand over with each other sex strong, and the characteristics for have great capacity, to the structure method of the tradition literature, story details, image means the esthetics enjoys etc. to produce the tremendous impact, make people not at just enjoy the single medium of literature expression means, to the literature of enjoy the way of request also more and more high, now orotund medium and and portrait medium to the work is after carrying on a stereoscopic sex packing regard the writing medium as principle of reading method even let people accept easily, and this kind of newly arisen culture- network the culture melted the meeting the main characteristic of the current public culture, at the same time have its oneself of new characteristics- the freedom of the creations, civilian, and have the ego of performance terrace, thus make some common netizen also really done the author, even is famous, got the similar treatment of master of literature, this text not only did the simple discussion to the basic concept of the literature of network, still thorough of to network literature of development did the simple outlook, this is because the network literature hases already dissolve to go into our life in the middle, if ever of traditional writer still has no accredit network literature, but ignore you how to think, the network literature have already walk to go into us living in the middle.

目前互联网传播速度快，交互性强，和容量大的特点，对传统文学的结构方式，故事情节，形象手段美学欣赏等都产生极大的冲击，使人们不在只是欣赏单媒体的文学表达手段，对文学的欣赏方式的要求也越来越高，现在声音媒体和和图象媒体对作品进行全位立体性包装后以文字媒体为主的解读方式更让人们容易接受，而这种新兴的文化--网络文化融会了当前大众文化的主要特征，同时有着其自身的新特点--创作的自由性，平民性，以及有自我的表现平台，从而使一些普通的网民也着实做了作者，甚至是出名，得到了文学大师一样的待遇，本文不仅对网络文学的基本概念做了简单的讨论，还深入的对网络文学的发展做了简单的展望，这是因为网络文学已经溶入了我们的生活当中，即使有的传统作家还没有认可网络文学，但是不管你怎么想，网络文学已经走入了我们生活当中。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"