In order to get initial value of the camera parameter, the paper firstly uses 2D-DLT to make a rough calibration, and then to get the precise camera parameters by using bundle adjustment of photogrammetry. 本文首先采用2维DLT对相机进行粗检校,获得相机参数的初始值;然后应用摄影测量的光束法进行平差解算,获得精确的相机参数。
Genetic algorithm is used to get the initial value of network weights. 应用BP神经网络进行分类识别,为了避免网络权值陷入局部极值点,采用遗传算法来获取网络权值的初值。
First, the least square estimation is implemented to get the initial value of modal parameters. Then, with the " a priori " stochastic noise information, the optimization process of maximum likelihood estimation is carried out to get better identification result. 在最小二乘估计的基础上,利用“先验”的随机噪声信息进行优化迭代的极大似然估计,得到更优的模态参数识别结果。
First, get the initial value of the corporation and project using traditional project valuation theory and methods, and determine the discount rate by the improved CAPM. Second, establish real option pricing model based on the succession and improvements of traditional methods. 首先,利用传统项目价值评估理论及方法进行公司价值和项目价值的初始评估,并针对其中折现率确定难的问题采取改进后的资本资产定价模型予以解决。
In this paper, the CENTURY model was used to simulate original organic carbon accumulation in black soil of a given soil texture in a typical rolling farmland in the Black soil region, Northeast China to get the initial value of SOC and its fractions; 本文以典型黑土漫岗坡耕地表层土壤为研究对象,利用CENTURY模型模拟特定质地下自然黑土有机碳的积累过程,估算研究区黑土有机碳及各组分的背景值;