A measuring technique of geometric accuracy for the cross - sectional contours based on their shapes and centroids is presented , and the feature points are generated according to the offset value of each segment of a cross - sectional contour 摘要以切层轮廓的形状因子和几何形心作为轮廓精度的评价参数，根据各轮廓边的偏置量自动拾取轮廓的特征点，尤其适合得到具有复杂形状的切层轮廓特征点。
The maximum of the piezoelectric constant d33 is 68pc / n when the volume fraction of pzt , pvdf , pan is 0 . 55 , 0 . 45 , and 0 . 05 respectively . finally , , when the n , a , p are 6 , 0 . 6 , 0 . 3 respectively , the calculation value can agree well with the experimental data 而且经过理论计算与比较，当以下三个参量取下列值时，即陶瓷颗粒形状因子n = 5 、极化率= 0 . 6 、结构因子q = 0 . 3时，实验数据与理论计算吻合较好。
The change of big pore section shape has more influence on soil water movement , but in small pore channels , the influence is small , in addition of pore section shape , it can get better prediction of unsaturated hydraulic conductivity 粗大孔隙通道的截面形状及变化对水分运动影响较大，较细空隙通道截面的形状对水分运动影响较小。修正孔隙截面形状对水分运动的影响，进一步考虑孔隙截面形状因子对土壤水分运动的影响，可以得到对土壤水分运动参数更正确地预测。
Based on the processed images , we can do the further computerized quantitative measure of parameters including area , perimeter , integrated optical density , average diameter , shape factor , number of bifurcation and end points , etc . our self - developed and localized system has a reliable property and a high ratio of performance and cost proved by our experiment 对感兴趣区域内的目标自动测量参数，如：面积、周长、综合光密度、平均直径、形状因子、三叉点、端点等。与其它类似系统相比，本系统具有性能稳定，开发成本低，技术性能价格比高的优点，成为国内医务人员易于掌握与使用的医学应用系统。
1 . firstly , the mathematical model of fiber pair with the factors of reflector shape and inclination is established . then , the numerical simulation is fulfilled , along with a series of rules of the influence on intensity modulation property caused by multimode fiber parameters , the factors of reflector shape and inclination 然后，采用数值仿真的方法系统地研究了多模光纤参数(包括光纤对轴间距、光纤芯径和光纤数值孔径) 、反射面倾斜因子以及形状因子对rim - fos强度调制特性的影响规律。
The micro boundary layer experiment is carried out from 8mm to 14mm of a 15mm - long micro plane . re numbers vary from 35 , 000 to 150 , 000 and 4 different mach numbers are selected . some new characters are discovered , such as velocity curve factor is smaller than that of well developed normal scale turbulence boundary layer 微尺度平板边界层实验选取从总长度为15mm的微平板前缘8mm到14mm之间的7个站位, 4种马赫数, 13个不同雷诺数(从35000到150000 )的实验状态,发现了该尺度下边界层流动的一些新的特点,如形状因子比常规大尺寸下充分发展湍流状态的形状因子更小等。
The compact algorithms for heat release from floor , indoor thermal environment , control characteristic and energy efficiency of room with imbed pipe floor heating system were studied in this dissertation . the heat release from floor is key nodes in designing of imbed pipe floor heating systems . the existing plate fine model is corrected to improving its accuracy by amending the temperature of fine root 文中对原有的平面肋片简化算法采用了肋基温度修正，提高了其计算准确度；根据埋管低温热水辐射地板结构特点，利用地板导热形状因子计算地板当量热阻，首次提出了更为简便的当量热阻算法，该算法将影响地板传热的物性参数和各种结构参数归结到当量热阻中，方便于工程分析和计算。
This paper presents an algorithm of moving region detection based on chroma , which is able to cope with varying illumination and shadow problems , and refines the detection results with morphology , by marking each moving region in the binary image , the geometrical features parameters such as area , perimeter and form factor can be extracted , which lay the foundation for the analysis and track of moving target 摘要提出了一种基于色度的运动区域检测算法，利用像素的色度分量进行检测，克服了亮度变化和阴影的影响，并利用形态学方法对检测结果进行后处理，对处理后的运动区域进行标记，提取每个区域的面积、周长、形状因子等几何特征参数，为运动目标后期的分析和跟踪奠定了基础。
Hence designers can adjust the shape of curves by changing not only control points but also shape factor . our experiments show that h - bezier model approximate to the control polygon more closely than bezier model . so they are suitable to shape design and modeling in cad systems 而且h - b zier曲线还引入了一个称为形状因子的参数，形状设计者不仅可以像b zier曲线一样通过调节控制多边形来控制曲线形状，而且还可以调节形状因子来调整曲线对控制多边形的逼近程度
It takes advantages of modern computer to fit all the experimental information , hence a very powerful pwa method . in this thesis , we use this method to analysis hadrons japdecay model jap - > ( ptt - tr + and j p radioactive decay model based on the pwa amplitude , we received mass distribution of two outgoing pious and angle distribution of the outgoing particles using the cern program . finally we compared tow different form factors ( barrier factors and gauss factor ) wh ich were always used the calculating of pwa amplitude 本文采用这种分析方法给出的j强衰变j ~ - ~ +和j粒子辐射衰变j ~ - ~ +分波振幅公式，利用cern的蒙特卡罗模拟程序绘出了末态粒子的角分布和不变质量分布，对分波分析中常用的两种动力学形状因子(中心位垒因子和高斯压低因子)进行了研究比较。
