三参数非线性生长模型的Lotus数值解法  

Numerical solution method of non-linear growth models with 3 unfixed parameters by lotus solver

作　　者：孙根年[1] 

机构地区：[1]陕西师范大学旅游与环境学院,陕西西安710062

出　　处：《陕西师范大学学报（自然科学版）》2003年第1期120-124,共5页Journal of Shaanxi Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(40271052);陕西省自然科学基金资助项目(2000D02)

摘　　要：给出了一种利用Lotus"求解器"对三参数非线性生长模型进行数值模拟的方法,该方法无需编程,操作简捷、方便,而且模拟精度显著高于现有各种方法.通过两个实例对其求解方法作了详细介绍.The two type nonlinear growth models with 3 unfixed parameters are widely used in ecology, environment, geography and economics research. Because they can not be changed into linear questions and can not be treated by least square method, there is some difficulty in modeling and forecasting for geographical and economic system. This paper gives a facility method of numerical stimulant with lotus solver, which needn′t write PC programmer, and is simple and prompt. The simulation precision of this method is better than that of current method. This method is particularly introduced with two examples.

关 键 词：三参数非线性生长模型 Lotus数值解法 Lotus“求解器” 数值模拟 地理系统 数值建模 

分 类 号：P91[天文地球—自然地理学]