非线性回归

• Hoist competence ? radius ( q ? r ) curve isn ’ t standard , so the characteristic curve math model of the crane must be found up . the curve ( q ? r ) has the characteristic of linear and nonlinear
  起重机的q ? r曲线具有线性和非线性的特点,采用单一的线性或非线性回归模型很难得出q ? r曲线的精确数学模型。
• This paper analyzes limitation of using traditional linear regression model as accident regression model , and demonstrates the applicability of using generalized liner regression model as accident model
  本文分析了传统线性回归模型作为事故回归模型的不足,确定了非线性回归中的广义线性回归模型作为事故评价模型的适用性。
• Phases straight lines model and not straight lines model based on bp are used to correct the physical parameters and eliminate deflection . the least - square is used to calculate the efficiency of generators
  在物理量校准中利用分段直线回归和基于神经网络的非线性回归，对模拟量进行了非线性在线校正来消除误差；在发电机效率计算中利用最小二乘法实现了发电机效率回归。
• The assessed results show that the prediction effect of artificial neutral networks model is better than that of multivariate nonlinear regression model , as well as the forecast effect of subsection model for water content of crude oil is better than that of united model
  评价结果表明：神经网络模型预测效果优于多元非线性回归模型，原油含水率分段预测模型效果优于统一模型。
• By means of the law of large number , repeated sampling method and nonlinear regression method , the direct component models are built up for bronze inscription system , seal script system , official script system and song dynasty regular script system
  借助于大数定律、重复抽样方法和非线性回归方法，分别建立了金文、小篆、汉隶和宋楷几个具有代表性的、不同时代的汉字系统直接构件关系模型。
• Then on the base of the prerequisite hypothesis , the author establishes three rural - urban land conversion models , from which the plural linear regression equation is hers best choice through careful case studies of three different regional cities in china
  然后，在提出模型假设前提的基础上，构思了三种农地城市流转模型，通过对三个区域的实证分析，确定多元非线性回归方程为最佳农地城市流转模型。
• The following conclusions were reached : i ) in different watershed , runoff depth and sediment transport modulus have power function ( y = axb ) relationship and the non - line regression equation can well simulate their relationship . parameter a and b can reflect difference of watershed harness degree
  通过研究，取得如下结论： ( 1 )在不同流域内，径流深与输沙模数均成幂函数( y = ax ~ b )关系，其关系方程以非线性回归拟合结果比较好。
• According to the theory of hydrology , hydro - chemical and hydrology , geology and isotopic geo - chemical , and the method of non - linear regression mathematics , the author researched and analyzed the cause of formation and variable features of lakes in jiuzhai valley , then draw the conclusions as follow 1
  以水文地质学、水文地球化学、地质学、同位素地球化学的理论为依据，并结合非线性回归数学方法，对九寨沟湖泊成因和动态进行分析研究，得出如下结论： 1
• Furthermore , through the analysis of the actuality and characteristic of energy consumption in electric power plants , energy consumption indexes of energy saving management in electric power plants is induced with nonlinear recursive mathematical method , and inverse exponent nonlinear recursive forecast model , a forecast model of energy saving target of electric power plants , is set up
  本文从能源危机入手，阐述了节能降耗对世界经济持续发展的重要性，通过对电厂能源消耗现状和特点的分析，利用非线性回归的数学方法对电厂节能管理的能耗指标进行归纳，建立了电厂节能目标的预测模型即倒指数非线性回归预测模型。
• A new calculation method for optimizing diesel engine performance , called nonlinear regression - mess method , is put forward . in this paper , 25 groups of simulated values are calculated from the diesel engine working model , specific fuel consumption , peak pressure , rate of pressure rise , nox and peak temperature are fitted into explicit function about compression ratio and fuel injection advance angle
  本文利用柴油机工作过程模型，得出25组模拟计算数据，利用非线性回归将油耗、最大爆发压力、压力升高率、 no _ x浓度及最高燃烧温度拟合成压缩比和喷油提前角的显函数，并用网格法进行优化，用c语言编制了优化计算程序，得出最佳的压缩比和喷油提前角，使其优化匹配。