Earnings management and abnormal returns: Evidence from the 1970–1972 Price Control Regulations

We examine the association between abnormal returns and earnings management in the context of price control regulations to test the construct validity of the earnings management model. Abnormal returns are used as a market–based measure, and discretionary accruals are employed to measure earnings management. Our results support the hypotheses that (1) price control regulations affect firms' security prices negatively, (2) firms make income–decreasing discretionary accruals to increase the likelihood of price increase approval, and (3) firms that are affected most negatively by the regulations manage earnings more aggressively. We conclude that the earnings management model we use in this study is capable of predicting opportunistic discretionary accruals.     

工业控制机的特点及在机电一体化中的应用

工业控制机是应用于工业领域自动控制的一类计算机，在机电一体化系统中有着重要作用。本文介绍了不同形式的工业控制机的特点及应用     

从敦煌本《百行章》看唐初的法制思想

唐代的法制思想，主要有两大特征，即仁刑恤典和厉行法制。对此，学者们多从正史的角度加以探讨和分析。而从敦煌所出唐代蒙书《百行章》所述内容同样清楚地显示了唐初的法制思想的以上特点。这一研究可以起到补充正史的作用。     

On Sraffa's Standard commodity: is its price invariant with respect to changes in income distribution?

In his 1960 book, Sraffa suggested using a composite commodity,which he called the ‘Standard commodity’, to solveRicardo's search for an invariable measure of value, i.e., astandard capable of isolating the price movements of any othercommodity induced by changes in income distribution. The absencein Sraffa's book of an explicit proof of the invariance propertyof this standard gave rise to many misunderstandings about itsmeaning and its role as an invariable measure of value. In orderto clear up these questions, Bellino (On Sraffa's Standard commodity,Cambridge Journal of Economics, vol. 28, 121–32, 2004)has proposed a ‘proper’ definition of an ‘invariablemeasure of value’, showing that Sraffa's Standard commoditydoes fulfil the requirements of this definition. He claims thatthe fulfilment of this property (but not the constancy of its‘nominal’ price) qualifies the Standard commodityas an invariable measure of value. In this paper, a proof ofthe invariance of the price of the Standard commodity with respectto changes in income distribution is given, and the equivalenceof this property with Bellino's definition of invariance isshown.     

OpenGL矿山虚拟设计及其应用

设计了系统的基本思路,在Visual Studio 2008数据库的基础上,利用OpenGL对矿山巷道,硐室设计等进行三维可视化虚拟,并通过数学模型,对矿井设计进行分析与纠错处理,用C#实现系统的功能。     

浅析多媒体技术在车辆工程教学中的应用

随着教育的发展 ,传统的教学方法已不能满足时代的需要 ,亟待运用现代教育技术手段 ,特别是多媒体的教学形式进入课堂 ,以发挥其特有的功能来提高学习效率。本文浅淡了如何在车辆工程教学中运用计算机多媒体的图、文、声、像并茂的特点 ,有效的激发学生的学习兴趣。     

政府采购制度:强化财政支出管理的必由之路

长期以来,我国财政资金使用效益不高,开支浪费大,监督机制不健全,并由此产生腐败现象,阻碍了经济的发展。建立政府采购制度是解决上述问题的重要途径,也是强化我国财政支出管理的必由之路     

我国会计行业如何面对WTO的挑战

随着世界贸易组织 (WTO)的大门向我国打开 ,一个重大的现实课题赫然摆在我国会计理论界和实务界的面前。加入WTO会给我国会计带来哪些挑战 ?我们将如何应付 ?本文就此问题提出观点。     

论京沪高铁桥上CRTSⅡ型板式无砟轨道施工技术

以京沪高铁桥上CRTSⅡ型板式无砟轨道施工为例,介绍了无砟轨道的基本结构、施工特点及难点;叙述了无砟轨道的施工工艺流程及工艺;阐明了无砟轨道施工中测量工作内容及轨道板精调注意事项;并对施工过程中的主要试验检测项目进行了陈述。文章对同类高铁CRTSⅡ型板式无砟轨道施工具有一定的借鉴。