Noise trading and autocorrelation interactions in the foreign exchange market: Evidence from developed and emerging economies

This paper seeks to empirically determine whether feedback trading strategies result in stabilization or destabilization in the foreign exchange market and if such strategies are a distinctive characteristic of an emerging economy or they are a common element to both developed and emerging economies. These hypotheses are tested via the use of a feedback model augmented with a generalized autoregressive conditional heteroskedasticity (GARCH) process for modeling the errors. The results suggest presence of both positive and negative feedback trading and asymmetric behavior in both types of economies. Irrespective of the nature of feedback trading, presence of asymmetric behavior implies that market traders rely on central banks to intervene so they can realize short-term profits. Finally, in cases of a positive first-order autoregressive parameter presence of the bandwagon effect is implied, whereby past currency movements are followed by expectations of currency movements in the same direction.

中国医疗卫生事业效益分析之系列研究——2005-2009年北京、天津、上海、重庆四个直辖市医院效益分析

研究2005-2009年北京、天津、上海、重庆四个直辖市医院的发展。总体四直辖市完成构建医疗服务体系,医院有发展潜力,运营良好,但应加强外部资金运用、资源利用、成本核算,控制成本支出。其中重庆发展后劲足模式好,管理高效有效控制药占比,社会效益与经济效益发挥良好。     

制度环境、控制权私利与流通权价值——来自我国上市公司股权分置改革的证据

文章借助我国上市公司的股权分置改革事件,运用控制权私利理论,分析了经济制度对流通权价值的影响。控制性股份的价值由现金流量的要求权和控制权私利两部分构成。流通性的提高总是能够提高现金流量权的价值,但由于控制权的专有性,上市流通对控制权价值的影响条件依存于控制权私利的大小。控制权私利越大,上市流通对控制性股份的价值的影响越小,从而控股股东愿意支付的对价越低。将经济制度作为公司控制权私利的外生决定变量,实证检验的结果与上述预期相符。