This thesis will present a new simple method to calculate the seismic response of the framed structures . this method calculates the effect of the first and second modal vibration . the first modal shear force of every floor distributes according to the shape which is close to the first modal shape 本论文提出了一种新的计算框架结构地震作用效应的简化方法，考虑前两个振型的作用，对于第一振型的各层剪力，按照近似于基本振型的形状分布，第二振型各层剪力引用廖河山提出的方法计算，然后用将两个振型的剪力“平方和开平方”的方法，计算得到各层剪力(总效应) 。
The diagnosis program is made in visual c + + . the samples are trained with this network , during which the relationships between the network parameters ( such as rule number , study rate , expert network initial error and gate network error , circulation times and power index ) and learning error were probed into , and the outcome can provide the basis for network parameter selecting 并采用visualc + +编制了系统程序，首先通过分层混合专家网络对故障样本进行训练，在训练中对分层混合专家网络各参数（规则数、学习率、门网络中止误差、专家网络初试迭代误差、循环次数、加权指数等）与学习误差平方和的关系进行了探讨，其结果为样本网络参数的合理选取提供了依据。
To certain monitoring area and the remote sensing ratio wave bands defined , by means of the criterion of mean residual sum of squares to carry on filtering of remote sensing factors , finally the important remote sensing wave bands influencing canopy density estimation are confirmed , meanwhile the operable software system is programmed 针对特定监测区域，对设置的遥感比值波段，采用平均残差平方和准则进行筛选，最终确定对郁闭度估测有一定影响的遥感波段，并形成可操作的软件系统。
The rbf network has a better performance , and better forecasting accuracy . then mathematical model of substation voltage / var control is constructed , the squares minimization of voltage differences as target , also considering requirement of voltage and power balance , taking it into consideration that the magnitude constraint of transformer ratio and compensating capacitor , also that constraint of operation times of one day transformer tap and capacitor switch 因此提高了学习性能，具有较好的预测精度。然后，建立变电站电压无功控制的数学模型，考虑电压的调压要求和无功功率平衡，计及变压器变比和并联补偿电容的上下限约束，变压器分接头和电容器允许的日调节次数的限制，以电压偏差的平方和最小为目标函数。
With the basis of nonlinear least squares theory , the system of nonlinear equations is established by minimizing the error quadratic sum of theoretical and actual gray level of the points on the typical surface , and the parameters of the illumination models can be determined by means of the least - squares procedure 以非线性最小二乘理论为基础，以典型曲面上各点的理论灰度值与实测灰度值的误差平方和最小为目标建立非线性方程组，通过求解非线性方程组来确定光照模型的各个光照参数。
A experienced equation which is summarized by many experiments is used to determine the number of mesosphere nerve cell and a sort of new square - sum function of errors is adopted . its characteristic is that weight errors of possible exceptional point is less . accordingly , the effect of errors of possible exceptional point is reduced , which make actual function relation simulation easier 本系统针对bp算法的局限性，给出了一种优化的bp算法，采用经过大量实验总结出的经验公式来确定隐层神经元的个数，并选取了一种新的误差平方和函数，该函数的特点是对一些可能的异常点的误差权值设计的较小，从而降低了异常值误差带来的影响，便于模拟出真实的函数关系。
