企业并购溢价对企业绩效的影响研究——基于我国沪深A股的实证检验

近年来,我国并购市场如火如荼,越来越多的企业选择通过并购来实现自己的战略目标,迅速占据市场地位,进入新兴行业。在并购交易热潮下,高溢价似乎也成为并购重组的"标配",高溢价并购屡见不鲜。可是企业支付高溢价换来的是否为优质资产,其是否能给企业带来价值的提升,这些都是值得研究的议题。因此,文章基于我国并购交易市场,研究了国内上市公司并购溢价的绩效反应。运用相关性分析、多元回归分析等研究方法探讨了并购支付溢价对并购绩效的影响。最后,根据实证研究结果阐述本文的结论,给出相应的建议。研究结果表明:并购溢价在一定程度上代表了并购后协同效应的大小,支付的溢价越高表明预期达成的协同效应越大,企业后期的绩效表现会越好。     

A2/O工艺处理焦化废水

本文介绍了采用厌氧-缺氧-好氧生物脱氮工艺(简称A2/O工艺)处理焦化废水的工艺流程及原理,和主要构筑物及运行基本情况,并进行了分析总结。     

一种分层A~*路径搜索算法及性能

基于层次道路网提出了一种分层A*路径搜索算法,其特点是在同一层路网中采用A*算法,而在层次切换时采用一种启发式定向搜索入口节点的方法。既顾及了道路等级性和朝着目标行进等驾驶员的心理因素,又可以获得比传统算法更快的求解速度。实验表明,该算法是可行的、高效的。     

顺应理论下的翻译策略与方法——以《红楼梦》杨宪益英译本为例

Verschueren的顺应理论为从语用学的角度研究翻译提供了新的理论框架。翻译策略和方法的选择应该分别实现对宏观交际语境和微观语言语境的动态顺应。归化和异化是实现动态顺应的翻译策略,直译和意译则是翻译方法。《红楼梦》的杨宪益译本为顺应论视角下翻译策略和方法的成功选择提供了例证。     

Property rights imperfections and asset allocation: Co-ownership in Bulgaria

This paper analyzes how imperfections of property rights affect households’ allocation of assets using micro-survey data from Bulgaria. Co-ownership of assets is widespread in many countries due to inheritance. Central and Eastern Europe offers an interesting natural experiment to assess the effects of this type of property rights imperfection because of the asset restitution process in the 1990s. In Bulgaria, where co-ownership is very prominent and land is strongly fragmented, the land reform and inheritance legislation allows identifying the impact of co-ownership by taking advantage of a discontinuity created by a minimum plot size law. We find that land in co-ownership is more likely to be used by less efficient farm organizations or to be left abandoned, and that it is related to significant welfare losses. The paper hence provides evidence of sub-optimal land allocation following a privatization that established formal but imperfect property rights.     

Growth effects of environmental policy when pollution affects health

In this paper, we develop a R&D-based growth model with a pollution externality and a health production sector. We study how health-impairing pollution affects long term growth, and the effect of an emissions' reduction policy (tax). We show that a tighter environmental tax has positive effects on growth via two channels. On the one hand, it improves workers' health and, thereby, productivity; on the other hand, it induces a reallocation of resources towards R&D and, thereby, higher research intensity. The size of the growth effect of a tighter environmental tax, and the level of the optimal environmental tax, are both positively correlated with the weight individuals place on health relative to consumption. As for welfare, a tighter environmental tax brings about utility gains in the long run and, potentially, also in the short run.     

Dynamic modelling of agricultural policies: The role of expectation schemes

The highly disputed effects of agricultural trade liberalisation are mostly simulated with static models. Our main objective in this paper is to evaluate the robustness of the static simulation results to the consistent modelling of dynamic behaviours and to the linked specification of price/return expectations. Focusing on the scenario of a complete trade liberalisation of arable crop markets by developed countries, we find that available static results are quite robust compared to dynamic specifications and to most expectation schemes. Endogenous market fluctuations due to expectation errors may appear following trade liberalisation. These fluctuations are nevertheless limited by the many feedback effects revealed by our general equilibrium framework.     

An investigation of issues relating to where energy should enter the production function

This paper examines the impact of imposing different separability assumptions in the specifications of the standard hierarchical KLEM production function in a computable general equilibrium (CGE) model. The appropriate means of introducing energy to production functions has been a source of debate for a number of years. However, while modellers often subject results to parametric sensitivy analysis regarding the values associated with elasticities of substitution between inputs, it is rarely the case that the structure of the production function is subjected to testing. However, the chosen structure reflects the modeller's view about elasticity between different inputs and will have implications for model results wherever there are changes in relative prices. We illustrate our argument by introducing a simple demand shock to a CGE model of the Scottish economy (targeted at the energy supply sector) under different assumptions regarding the structure of the KLEM production function and separability assumptions therein.     

A direct test of hyperbolic discounting using market asset data

This paper introduces a framework that generalizes exponential discounting in a net present value model by including a quasi-hyperbolic discount parameter in the asset valuation equation. Using observed market asset data, a statistically significant quasi-hyperbolic parameter is obtained, thus rejecting exponential discounting.