应用数学

Taking QY80 auto-crane's rocker mechanism of four一axle steering system asexample,this paper presents a new method which applies multibedy system Kinematics theory toanalyse mechanism's spatial motion, builds up mathematical model of optirnization for the rochermechanism of steering System, and chooses minimization adoptive random search method to developan optimization design microcomputer program,Using aboving method and program , this paper fi-nally optimlzes each design Variable, and obtains better resul...

以QY80汽车起重机四轴转向摇臂机构为例，利用多刚体系统运动学理论对机构作了空间运动分析，建立了转向摇臂机构优化设计的数学模型，并用改进了的约束随机方向搜索法编写了优化设计的微机软件，并已应用于生产实践。

Exhibition hall is divided into four, nine galleries, one of electric and magnetic layer for the area, power and machinery area, math section, the universe and Space Pavilion, set up a high-voltage discharge, electric magnetic Gallery, bowls, a typical mechanical transmission, three-dimensional coordinates and other exhibits; the second floor for the sound and light booth, Applied Technology Pavilion, set up a light display, three-dimensional holographic images, sound simulation, laser laser, simulated driving and other exhibits; three for the Life and Health Pavilion, set up a false impression cylinder, fitness tests, brain and facial features, body systems, such as exhibits; underground floor for temporary exhibitions; in the Office of the Hebei Academy of Sciences set up a pavilion style.

展厅共分四层，九个展区，其中一层为电与磁展区、力与机械展区、数学展区、宇宙与航天展区，设置了高压放电、磁电廊、滚球、典型机械传动、三维坐标等展品；二层为声与光展区、应用技术展区，设置了光路展示、全息立体影像、声音模拟、激光内雕、模拟驾驶等展品；三层为生命与健康展区，设置了错觉滚筒、体能测试、大脑与五官、身体各系统等展品；地下一层为临时展览；中厅设置了河北院士风采展区。

Basing on experimental study, the article analyses the process of calcination and desulfuration reaction and builds a mathematical model of calcium-based materials (limestone, shell and their mixture), which will provide theoretical basis and practical guidance for improved performance of the normal sulfur sorbent and the choice of new sulfur sorbent.

然而传统的燃煤固硫剂石灰石，因钙转化率低而使该技术的推广应用受到限制，在实验研究的基础上，对钙基材料—石灰石和贝壳用于燃煤的煅烧固硫反应过程进行数学建模与分析，以便为改善常规固硫剂的性能，选择新型固硫剂提供理论依据和实用指导。

Major Courses: Advanced Mathematics , Physics , Engineering Drawing , Engineering Mechanics, Electrotechnics and Electronics , Mechanical Manufacture Basis , Materials Forming Basis, Mechanical Principle and Design, Mold CAD/CAM Software Application, Plastics Forming Machinery, Sheet Metal Forming Technology and Mold Design, Plastics Mold Design, Mold Manufacture Technology, and so forth.

主要课程：高等数学、大学物理、工程制图、工程力学、电工电子技术，机械制造基础、材料成型基础、机械原理和设计、模具CAD/CAM软件应用、塑料成型机械、冲压工艺及模具设计、塑料模具设计、模具制造技术等课程。

Based on the virtual prototype technology and simulative software platform Pro/E, the double rotating shaft supporting mechanism of wind tunnel testing model was designed and developed, and the mathematical model of angle control was established.

基于虚拟样机技术及仿真软件平台Pro/E，设计开发了风洞试验模型的双转轴支撑机构，建立了角度控制的数学模型，实现了机构的虚拟样机设计和运动学仿真，获取了被测试验模型运动情况的运动参数曲线，并对双转轴机构实施了干涉的动态检查，为双转轴机构设计方案的交流与评估，以及双转轴机构的制造与应用奠定了基础。

Based on the time-frequency analysis (continuous wavelet transform and short time Fourier transform), the arithmetic uses the modulus maximum characteristic on the phase scale and carry frequency scale to recognize phase modulation rule of signal. So without whole wavelet coefficient the signal mathematics model can be obtained quickly. It provides well condition for application of arithmetic in practice.

该算法基于信号的时频分析（小波分析和短时傅里叶变换），利用小波变换的相位尺度和载波尺度的模极大值特征辨识信号的相位调制规律，因而在无需计算全部小波系数的情况下，可快速地获得信号的数学模型，为算法在实际中的应用提供了良好的条件。

When detecting the edge, an auto-choose threshold algorithm is given to reduce the salt-and-pepper or pulse wrong edges. After analyzing the special noise factor in pin's image, this paper improves the edge detection elements. That's putting forward a way which is named"the method of de-noise based on linear weighted operator template"to reduce the zonal or cluster noise. And test show that the algorithms detect image's edge rightly.

针对钻针图像的特点，在边缘检测中提出了自动选择阈值的算法；之后针对钻针图像中的特殊噪声形式，对边缘检测算法进行了原理上的改进，通过对图像的灰度分布的数学模型的建立，提出了使用加权直线模板去噪法进行块状噪声的去除；通过上述算法的应用，良好地改善了图像处理的质量。

This article introduces the composition of process automation system, main mathematical model principle and computational process in detail, and describes the application on the hot roughing mill concretely.

本文详细阐述了过程自动化系统的组成以及主要数学模型的原理和计算过程，并描述了其在铝热粗轧机上的具体应用。

A mathematical mode for circle parameters evaluation is e stablished, the corresponding software is designed and has been applied to the m easurement software of universal tools microscope successfully. A practical case for measuring a ring gauge's diameter and roundness error by the image method is given.

建立了圆参数评定的数学模型，设计了相应的误差评定软件，成功地应用到了微机型万能工具显微镜的测量软件上，并给出一个影像法测量光滑环规直径和圆度误差的实例，将改进置换算法的评定结果与其它评定方法进行了比较。

Secondly,based on rigid-body kinematics,the model of degree of freedom was formulated to describe the relationship between the machining requirement and the theoretical constraint degree of freedom .

工件自由度的合理约束是夹具设计的关键，基于定位原理的数学模型，根据齐次线性方程组解结构的性质，首先推导了三个定位方案的合理性判据；然后，基于刚体运动学，建立了描述加工要求和理论约束自由度之间关系的自由度模型；最后，利用典型实例详细讨论了自由度模型及合理性判据的分析应用过程。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。