基于EGARCH模型的我国股市信息对称性研究

利用过去17年我国上证综合指数的历史数据,根据股票市场大的波动周期分五阶段经过EGARCH(1,1)模型估计,以验证市场对信息冲出的反映情况.研究结果表明:中国股市存在很大的波动性,尚未达到弱有效性;存在正负杠杆效应交替出现的现象,表现出信息不对称性,但是这种不对称性在明显减小.     

Statistical consulting

The paper and the special issue focus on the activity of statistical consulting and its varieties. This includes academic consulting, consulting to and in industry as well as statistics in public media.     

女性主义对构建和谐家庭性别分工模式的思考

传统的家庭性别分工作为人类最原始的社会分工,在生产关系较为落后的经济条件下,确实起到了一定的提高劳动效率和增加家庭福利的作用.但是却把女性置于社会关系和家庭关系中弱势地位,并使男性承受了巨大的压力.随着历史的发展,这种分工的局限性日益暴露.女性主义对于性别分工问题的研究,必将为建构一种新型的家庭分工模式,提供有价值的参考.     

记英语学习的策略——对工程硕士研究生学习策略选择和使用情况的调查报告

通过对工程硕士研究生中优秀学习者和落后学习者学习策略的选择和使用情况的调查分析,提出研究启示,以便能在教学中对学员进行有效的英语学习方法指导。     

Some results on optimality in models with heteroscedastic errors from partial optimum designs

This paper studies optimum designs for linear models when the errors are heteroscedastic. Sufficient conditions are given in order to obtainD-, A- andE-optimum designs for a complete regression model from partial optimum designs for some sub-parameters. A result about optimality for a complete model from the optimality for the submodels is included. Supported by Junta de Andalucía, research group FQM244.     

消化空置商品房的对策探析

20世纪90年代初期以来由于开发规模未能有效控制,导致商品房空置率逐年大幅度增高,应采取有效措施,降低商品房空置率,使房地产业在国民经济建设中迅速健康地发展。     

A “brer rabbit” case for reverse mandated benefits

Reverse mandated benefits is a government-mandated policy that requires employees to provide their employers with benefits that workers would not provide otherwise. Of course, only those benefits would be mandated that are worth more to employers than they cost, as determined by political authorities. My case for such a policy argues that it is at least as sensible as policies mandating that employers provide benefits to their employees that would not be provided otherwise.