查询词典 mathematical

In the union mathematical analysis the integration by parts this content two different teaching methods, we elaborate in the problem solution teaching has prohibited become the problem solution teaching class in the problem explanation introduction class.

结合数学分析中分部积分法这一内容的两种不同的教学方法，论述了在问题解决教学中切忌把问题解决教学课上成问题解答介绍课。

In this paper, first, we discuss the mathematical model and application of data warehouse on the base of deep research on business intelligence and data warehouse architecture.

首先，本文回顾了商业智能的概念和数据仓库的基本原理，在此基础上研究了数据仓库的数学模型及其应用。

Knowledge representation in traditional AI is a mathematical model of some human intelligent behavior, but it maybe has less resemblance to the essence of human intelligence.

知识表示是对智能进行模拟的一个数学模型，然而它可以不是一个对智能本质的描述，特别是传统的符号主义知识表示离揭示人的智能行为发生的内在过程还有很大的差距。

By fitting of experimental data of concrete beams with 2-D composite cracks based on the fictitious crack model, mathematical expressions for parameters α and β in the 2-D composite inteneration equations for Ⅰ-Ⅱ,Ⅰ-Ⅲ, and Ⅱ-Ⅲ composite cracks are obtained, and based on the expressions, 2-D composite inteneration curves under different proportions of two stress intensity factors, that is under different weights, at the ends of 2-D composite cracks can be directly derived.

作者中文名：邵勇；王向东摘要：基于虚拟裂缝模型，通过对混凝土二维复合型裂缝梁试验数据的拟合，得到了ⅠⅡ，ⅠⅢ，ⅡⅢ3种二维复合型软化方程中参数α，β的数学表达式。据此表达式可直接求得二维复合型缝端2个应力强度因子之任意比值下混凝土二维复合型的软化曲线。

The methods of adaptive median filter, variance ratio of interclass and intraclass segmentation, and mathematical morphology were used to decrease the noise of original welded seam image, to extract welded seam region, and to carry on high frequency enhancement transformation for the interior of extracted welded seam with frequency range sharpening.

利用自适应中值滤波方法和类间、类内方差比分割法及数学形态学方法对原始焊缝图像进行降噪和提取焊缝区域，并对提取的焊缝内部进行频域锐化的高频加强变换。

Simulation results indicated that the adaptive median filtering effectively removes noise, and maintain the details of welded seam and defection edge; the variance ratio of interclass and intraclass segmentation could accurately distinguished between the welded seam metal and the base metal together with mathematical morphology method; high frequency enhancement extrudes the welded seam center, consequently defects would be detected.

仿真结果表明自适应中值滤波能够有效去除噪声，并保持焊缝和缺陷的边缘细节；类间、类内方差比分割方法与数学形态学方法并用，能准确的将图像分割为焊缝与母材区域；高频加强变换能够使焊缝中心部位突显出来，从而实现缺陷的检测。

It involves a lot of intercross subjects and technologies such as machine learning,mathematical programming, statistics, pattern recognition and so on.

它是一门交叉学科，涉及机器学习、数学规划、数理统计、模式识别等相关技术。

On the base of mathematical model of interdiction efficiency, Monte Carlo method is applied to numerical simulation of atack progress of airborne dispenser upon runway.

在建立封锁效率的仿真模型的基础上，应用 Monte-Carlo方法，进行机载布撒器攻击机场跑道过程的数值仿真，获得了影响封锁效能规律的总体参数，对机载布撒器武器系统研究具有一定的指导意

On the basis of the lumped physical-mathematical model of interior ballistics given in reference 1,this paper gives a detailed discussion about the conditions leading to the formation of pressure plateau in the combustion chamber of a RLPG,and derives the analytical relationship between the jet area and other parameters under which the pressure plateau can be formed.

在文献1建立的RLPG集总参数内弹道学数学物理模型的基础上，对RLPG压力平台产生的条件进行了详细的探讨，推导了满足压力平台的喷孔面积与膛内其它参量之间的解析关系式，编制了计算程序，处理了计算过程中所产生的压力振荡问题，获得了工程设计中实用的产生压力平台的中心杆半径与其行程的变化关系曲线。

A physical model of the process of two propulsions is proposed, and a mathematical mode of interior ballistics of two propulsions is also established based on a 12.7mm test gun, while general effects of various parameters upon maximum pressure and muzzle velocity are revealed.

提出了二次发射过程的物理模型，并以12.7mm弹道枪为对象建立了膛内二次发射内弹道数学模型，分析了参数变化对膛压和初速的影响规律。

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。"