Nonparametric testing for time series: A bibliography

This bibliography brings together and classifies a wide variety of nonparametric methods which are pocentially useful for the analysis of time series data, in particular for testing randomness. Inference on Markov chain models is also extensively surveyed.     

世界史:理解现在

本文从历史教育的角度, 论证了理解世界, 尤其是当今世界, 教材和课程安排必须包括世界史, 这需要对历史定位、历史思维及历史书写的方法论做出审慎的考虑。作者指出, 世界史有助于师生认识到世界并非远在天边, 而是浸透于我们的生活, 并且我们是其中的一部分; 有助于忍耐现代性的模棱两可性, 并有助于抵制原教旨主义的诱惑。在致力于当今的历史性时, 世界史有助于师生在现代社会把握方向, 在某种程度上制止弥漫世界的不平等性。     

Minimum Wages as a Barrier to Entry: Evidence from Germany

This study analyses employers' support for the introduction of industry‐specific minimum wages as a cost‐raising strategy in order to deter market entry. Using a unique data set consisting of 800 firms in the German service sector, we show that high‐productivity employers support minimum wages. We further find some evidence that minimum wage support is higher in industries and regions with low barriers to entry. This is particularly the case in East Germany, where the perceived threat of low‐wage competition from Central and Eastern European countries is relatively high. In addition, firms paying collectively agreed wages are more strongly in favour of minimum wages.