土地面积量与单位数学模型的研究

Quantities and units of land area in mathematica models

文中的数学模型 ,是用“亩”作为土地面积的计量单位 ,又是一元一次线性回归、多项式、指数函数、对数函数或幂函数等类型的数学模型 ,可以根据自变量之间、因变量之间的相互关系及其与之对应的换算关系 ,直接将模拟方程的因数a、b、c换算为a′、b′、c′ ,从而避免先将以“亩”为单位的原始数据全部换算成以“hm2 ”为单位的数据 ,然后重新进行回归分析、重新拟合方程 。

In the mathematics model,linear equation with one unknown,or multinomial,or exponential function,or logarithmic function,or power function is applied and currently called 'mu' is directly applied as the metrological unit of glebe area.In this way,coefficient 'a','b','c' can be converted into ' a′','b′','c′' according to the relation of the independent variables,that of dependent variables and the corresponding converting relation between the independent variables and the dependent variables.In doing this,a lot of inconveniences are avoided that firstly convert all the datum measured with unit of 'mu' into those with 'hm 2',then make regression analysis again,formulate the equation again and write the thesis again.