搜索: - 浪迹天涯
找到一条
江湖兵器浪迹天涯2009-10-06 11:26:55
来源于wikipedia.org. 可口可乐1909年以前在饮料中加大量的咖啡因,还有可卡因。 The Pure Food and Drug Act was initially concerned with ensuring products were labeled correctly. Habit-forming drugs such as cocaine were not illegal so long as they were labeled with their contents. This labeling requirement gave way to efforts to outlaw certain products that were not safe, followed by efforts to outlaw products which were safe but not effective. Coca-Cola Company's earlier advertising behind the A...
这就是你对实证研究的偏见了
江湖兵器浪迹天涯2009-10-06 09:39:38
只要control的好,秦琼是可以和关公比较的。那么多实证研究,cross sectional的比较不同公司,panel data比较不同公司在不同时间的,不就是比较你所谓的秦琼跟关公? 你可以说我的样本不够多,但不能说不能比较。 man, you are a tough reviewer!
刚开会回来
江湖兵器浪迹天涯2009-10-06 03:55:22
就是这个道理。。。呵呵 总结一下: 1. 食品药品问题是经济发展到一定程度的产物(比如,生产规模化,管理、监督、惩罚机制不健全),美国在1900年的时候发生了,我们今天也发生了,这是不以人的意志为转移的。 2. 治理这个问题,1902的第一部到2007年的最近一部,美国花了100来年呢。即便是中国不是第一个,有经验可循,如果learning spillover effect是正的,也得好几十年;如果是负的,就更多了。中国已经开始第一步了,这是个过程,要加以时日。...
我回上面了
江湖兵器浪迹天涯2009-10-06 02:15:45