连锁董事治理效应的实证分析——基于内在机理视角的探讨

本文按照中观、微观、个体的逻辑分析思路,分别从连锁董事网、公司董事会和连锁董事的个人行为特征这三个层面来解析连锁董事产生治理效应的内在机理:认为连锁董事网的嵌入性影响着公司的资源获取能力、协调控制能力和环境应变能力;连锁董事的引进可改善董事会的结构,影响着董事会的战略参与与功能整合;而连锁董事个人的行为动机与个人能力将会约束其治理效应的发挥.从而表现为网络镶嵌、公司行为与个人动机的有机结合与共同作用.本文基于随机抽样的方法选取400家上市公司作为研究样本,通过描述性统计分析与构建时刻固定效应面板数据模型对连锁董事的治理效应进行了实证研究.得出相应的结论:公司所处连锁董事网的规模、公司的网络中心度以及连锁董事所担任的董事数目与公司治理绩效之间具有正相关关系,董事会中连锁董事比例的治理效应没有得到确定性验证,而连锁董事的持股与公司治理绩效之间并不存在显著的相关关系.研究表明,我国上市公司的连锁董事在任职特征及网络嵌入性上具有积极的治理效应,并提出相关的建议.     

广西环北部湾少数民族新农渔村几种成功的发展模式

在中国新农村建设、泛北部湾区域经济合作的大背景下,广西环北部湾建设应更多地关注该区域内的少数民族的农渔村建设.本文在调查研究广西环北部湾地区不同地理位置、不同民族特色的几种少数民族新农渔村模式的基础上,总结出当前广西环北部湾地区新农渔村建设的成功经验和教训.     

Understanding changes in Māori incomes and income inequality 1997–2003

This paper examines recent changes in weekly income levels and dispersion for Māori, New Zealand’s indigenous ethnic group. Changes in the Māori income distribution between 1997 and 2003 reflect rapid increases in economic growth and employment rate. A reduced proportion of people had zero or benefit-level incomes and a higher proportion had high incomes. Income inequality declined for working-aged Māori and was stable for employed Māori. The average income gap between Māori and Europeans declined. The increased Māori employment rate during this period was the single most important driver of changes in the Māori income distribution.

Changes in HIV/AIDS knowledge and testing behavior in Africa: how much and for whom?

Demographic and Health Survey data from nine African countries make it clear that HIV/AIDS prevention knowledge has been increasing. Still, in many cases, fewer than half of adult respondents can identify specific prevention behaviors. Knowledge is lowest in rural areas and among women. HIV testing generally remains rare but is highly variable across countries, likely reflecting differences in the supply of testing services. In most cases, schooling and wealth impacts on prevention knowledge have either been stable or have increased; hence, in the majority of contexts, initial disparities in knowledge by education and wealth levels have persisted or widened.

Welfare analysis of a tax reform for Germany: a comparison of the unitary and collective models of household labour supply

We compare results of a tax reform analysis obtained with the collective and unitary models of household behaviour. We simulate real world micro-data by means of a collective approach, using a compound procedure of estimation and calibration based on the 1998 wave of the German socio-economic panel. We estimate a unitary model on this ‘collective’ data set. Investigating a move from joint to individual taxation on the basis of both models, we obtain important discrepancies between predicted adjustments to labour supply and distortions in the welfare analysis of the reform on the basis of unitary estimates.      

Family structure and child outcomes in the USA and Sweden

Previous research shows that living in a non-intact family is associated with educational disadvantages. This paper compares the relationships between childhood family structure, schooling, and earnings in Sweden and the USA. This comparison is interesting because both family structure and public policies differ significantly. We find a negative relationship between living in a non-intact family and child outcomes, and the estimates are remarkably similar in both countries. After using sibling-difference models, the correlation with family structure is no longer significant. These results cast doubt on the causal interpretation of the negative relationship between non-intact family structures and child outcomes.     

广义岭选择指数(英文)

把岭回归的原理和方法应用到家畜性状的选择指数中 ,提出了广义岭选择指数 ,理论和实践证明的这一指数形式在一定意义上优于传统的选择指数。也可以说 ,它在一定意义上丰富了选择指数的理论 ,但不能代替经典的选择指数     

试论人类经济历史发展过程的波形路径

资本主义经济危机与周期的理论 ,是马克思主义政治经济学中固有的理论。对这一理论的研究 ,已逐渐延伸到对社会经济发展过程中一般周期性波动问题的探讨。人类经济的发展 ,是否也呈现一定的周期性 ?本文试图说明 ,人类经济历史发展过程 ,是沿着某种曲折的波形路径推进的     

Seasonal forcing on the dynamics ofClethrionomys rufocanus: Modeling geographic gradients in population dynamics

We interpret gradients in population dynamics of the gray-sided vole from the southwestern part of the island of Hokkaido to its northeastern part within the framework of a phenomenological model involving the relative length of summer and winter. In Hokkaido, as in other northern regions, both spring and fall is considered as short transition periods between the two main seasons — summer (the primary breeding season) and winter (the non-reproductive or secondary breeding season). We show that the geographic transition in dynamics may be understood as the combined consequence of different patterns of density-dependence during summer and winter, and geographically varying season lengths. Differences are shown to exist between summer and winter with respect to strength of density-dependence. Direct density-dependence, in particular, is stronger during winter than during summer. A model is presented to show how relative lengths of seasons can induce both stable and periodically fluctuating population dynamics. The results are compared and contrasted with what is otherwise known about the gradient in rodent dynamics in Fennoscandia.