We examine the patterns of media ownership in 97 countries around the world. We find that almost universally the largest media firms are owned by the government or by private families. Government ownership is more pervasive in broadcasting than in the printed media. Government ownership of the media is generally associated with less press freedom, fewer political and economic

Structure Economic profit Short-run profit maximization –Comparative statics Long-run profit maximization Profit maximization and returns to scale Revealed profit maximization

一、函数的改变量 二、函数连续性的定义 三、函数的间断点 四、初等函数的连续性 五、闭区间上连续函数的性质

一、无穷小与无穷大 二、一元函数极限的概念 三、极限的重要性质

一、微分的概念 二、微分的计算 三、微分的近似计算

一、导数的概念 二、导数的几何意义 三、导数的经济意义 四、函数的可导与连续

一、函数的单调性 二、函数的极值 三、函数的最大值和最小值

一、边际函数与边际分析 二、弹性与弹性分析

一、第一类换元积分法 二、第二类换元积分法 三、分部积分法 四、有理函数积分法

dollars, just next to that of Japan. This enabled China to stand the As shown by Graph 1, the exchange trials of the Asian financial crisis, shield rate of the yuan(RMB) fell dramatically ing the renminbi from devaluation