【摘要】 为了测定对Richards模型的拟合曲线的最佳程度和分析我国城市住宅电话、公务电话的增长规律及它们之间的关系,本文采用了一种最小二乘法的带阻尼的非线性回归方法。这是一种新的预测我国城市话机普及率的方法。把这种方法运用到G市和H市,得到了满意结果并作了描述。更多还原

【Abstract】 For measuring the goodness-of-fit of the Richards modol for analysing the growing regulation of residential and official business telephone sets in the cities of our country as well as the relationships among them, a non-linear recurrent and damping method of the least square method is used in the paper. This is a new method in predicting the popularity rate of urban telephone sets. Some satisfactory results that are obtained by applying the said method into cities G and H are described.更多还原