请注明:姓名-公司-职位
以便审核进群资格,未注明则拒绝
蜻蜓点水 发表于 2007-8-22 14:40 Change your country to numbers first. The following is an example. Your data should look like the fo ...
蜻蜓点水 发表于 2007-8-21 13:59 excellent questions asked. the following codes which is I used in my research provide those two test ...
toyewa 发表于 2006-11-27 21:57 为什么我按照楼主的程序输入. xtserial y x后显示unrecognized command: xtserial请那位高手能指点下,多谢 ...
arlionn 发表于 2007-9-26 08:21 xtgls 的理论解释可以参考Greene(2000,4th,chp15); 个人认为它比较适合“大T小N”或N和T相当的面板数 ...