Does Market React to Old Information——An Empirical Study on the Disclosure of Insider Trading

市场信息的取得和传递是财务学研究的核心问题之一。根据有效市场假说，市场中的信息传递是及时且无成本的，投资者能及时对市场上出现的所有信息进行有效反应；当旧信息重新在市场上出现时，不可能再引起新的市场反应。然而在现实交易中，由于信息传递存在成本，投资者也存在诸如注意力、精力、能力的限制而难以及时接收信息并对其产生反应。这使得投资者可能对某些市场上已存在的信息“熟视无睹”，而对那些获取成本较低、较易引起注意、较少消耗精力、以其他形式传播，所谓“新瓶装旧酒”的旧信息产生反应。正是因为证券市场的信息传递受到信息传播路径、传播中介以及投资者的信息接收能力、处理能力等因素的影响，使得市场中可能出现如此这般有...Information acquisition and transmission are the core issues of financial researches. According to the EMH, investors can timely response to the information in the market. When old information appears on the market, it can no longer cause new market reaction. However, unlike the idealized assumptions, the process of information acquisition is affected by many factors, for example, the spreading pa...学位：管理学硕士院系专业：管理学院_财务学学号：3212012115055

ANTISTATIC MODIFYING of ALKYLAMIDE ON THE SURFACE LAYER of PRINTINGPOTTERY-PLASTIC FLOOR BOARD

研究了烷基酰胺ECH—2对陶塑地砖PVC面层抗静电改性的可能性,证明其面层的电阻率、透明度等物性与抗静电剂的用量、配比有关,找到ECH—2最适用量为0.8~0.9份,在与溴磷酸酯协同改性时,又可提高PVC透明膜的阻燃性。用这种改性PVC薄膜作面层,与印花陶塑底层复合制成地砖的性能:表面电阻率3.7x10--8Ω、氧指数30等。达到既抗静电又阻燃的改性效果。The possibility of antistatic modiFying using alkylamide ECH-2 on the surFace layer of printing pottery - plastic PVC Floor board was studied (the results show that the properties of the surFace layer such as electrical resistivity and transparency had relations with the dosage and the mix ratio of the antistatic agent.The optium dosage was proved to be 0.8 - 0.9%.When mixed with bromophoshate to comodiFy.ECH -2 could improve the Flame - resistivity of the material.The compounded Floor board molded of modiFied PVC as surFace layer and printing pottery-plastic as bottom layer had special properties 1,0, 3.7X108,OI 30.The double eFFect of antistatic and Flame-retarding was thus reached

新型低气阻高效除尘器的研究与应用

为了提高除尘器对细颗粒物的捕捉效率,制备了一种由蜂窝陶瓷、聚酰胺材质扭线刷和缚尘剂组成的除尘模块。其中填充了聚酰胺扭线刷的蜂窝陶瓷为除尘模块的主体,该主体独有的结构将拦截尘粒的滤料纤维分布在与气流方向垂直的平面上,有利于含尘气体的捕捉。缚尘剂为除尘模块的增强因子,它可以在除尘模块表面形成液膜,用来抑制除尘时的二次扬尘,提高除尘效率。通过对涂覆有缚尘剂的除尘模块的除尘效率的研究表明,含尘气体通过除尘模块,对粒

新型低气阻高效除尘器的研究与应用

为了提高除尘器对细颗粒物的捕捉效率,制备了一种由蜂窝陶瓷、聚酰胺材质扭线刷和缚尘剂组成的除尘模块。其中填充了聚酰胺扭线刷的蜂窝陶瓷为除尘模块的主体,该主体独有的结构将拦截尘粒的滤料纤维分布在与气流方向垂直的平面上,有利于含尘气体的捕捉。缚尘剂为除尘模块的增强因子,它可以在除尘模块表面形成液膜,用来抑制除尘时的二次扬尘,提高除尘效率。通过对涂覆有缚尘剂的除尘模块的除尘效率的研究表明,含尘气体通过除尘模块,对粒