农村邻里吃请行为的经济学和社会学分析

邻里吃请在农户年支出中占相当高的比重，所谓的人情开支已经演变成农民沉重的经济负担。农村非正常邻里吃请行为应该得到矫正。     

并购失败：管理者利益保护还是经济安全威胁解除？——凯雷收购徐工案例研究

凯雷集团并购徐工机械是国内第一起由国际私人股权基金获得大型国有企业绝对控股权的案例。文章采用事件研究法,以徐工机械控股的上市公司徐工科技为研究对象,分析了此次并购过程中的五个事件：首次签署并购协议,博客门事件,修订并购协议,二次修订并购协议,协议到期。研究表明上市公司股东在前两个事件中获得了显著的正超常收益,而在后两个事件中的超常收益显著为负,至协议到期并购失败后又获得显著为正的超常收益。从并购过程中的市场反应来看,支持经济安全威胁的证据比支持管理者利益保护的证据更强。     

消费对经济增长的拉动作用研究——基于城乡消费结构的比较

消费是一个国家经济增长的源动力,是公民福利增加的源泉,如何发挥消费对经济的拉动作用已成为学术界研究的热点问题。基于城乡消费结构比较的视角,就消费对经济的拉动作用以及我国城乡居民消费结构的差异进行了研究,结果显示：消费对经济增长具有积极的拉动作用;居民收入水平较低、收入水平差距较大是我国城乡居民消费对经济增长拉动作用较小的重要原因;我国城乡居民的消费结构存在差别,主要原因在于城乡收入水平的差别,持续强劲的居民消费需要以居民的收入持续增加为基础。为此,应从提高居民收入水平、减小城乡居民收入差距、建立完善的医疗保障体系、合理的消费引导等方面来改善城乡居民的消费结构,以真正发挥消费对经济增长的促进作用。     

异质性机构投资者差异化作用于双元创新投资吗——基于注意力基础观与市场迎合理论双重视角

基于2011-2020年沪深A股高新技术企业样本,探究公司治理框架下异质性机构投资者对企业双元创新投资的差异化作用机理,得出如下结论：①异质性机构投资者对于双元创新投资具有差异化影响,其中,专注型机构投资者更有利于双元创新投资;②专注型机构投资者影响决策者注意力资源配置,使其更注重探索性创新投资,临时型机构投资者基于市场迎合动机作用于开发性创新投资,且当管理层业绩和外部监管压力较大时,其对开发性创新投资的迎合动机更明显;③专注型机构投资者通过监督和激励管理层、提升企业风险承担水平作用于企业双元创新投资,临时型机构投资者通过丰富投资者情绪作用于开发性创新投资未得到验证;④产业政策有助于增强专注型机构投资者对决策者注意力的影响,使其更专注于探索性创新投资,同时也有助于提高临时型机构投资者的开发性创新迎合投资动机。研究结论为理解机构投资者差异化治理角色提供了一种新视角。     

Price-raising drug enforcement and property crime: a dynamic model

Price-raising drug enforcement suppresses drug use, but it is expensive and may increase property crime. This has led to contradictory recommendations concerning how drug enforcement should or should not be used. We reconcile these recommendations by incorporating the enforcement's effects on both drug use and on property crime within an optimal-control model that recognizes whether convicted drug-involved property offenders are merely incarcerated or whether they receive some form of drug treatment.     

Using paradata to collect better survey data: Evidence from a household survey in Tanzania

Data are a key component in the design, implementation, and evaluation of economic and social policies. Monitoring data quality is an essential part of any serious, large‐scale data collection process. The purpose of this article is to show how paradata should be used before, during, and after data collection to monitor and improve data quality. To do this we use timestamps, global positioning system (GPS) coordinates, and other paradata collected from an 800‐household survey conducted in Tanzania in 2016. We demonstrate how key paradata can be used during each phase of a research project to identify and prevent issues in the data and the methods used to collect it. Our results corroborate the importance of collecting and analyzing paradata to monitor fieldwork and ensuring data quality for micro data collection in developing countries. Based on these findings we also make recommendations as to how researchers can make better use of paradata in the future to manage and improve data quality. We argue for an expansion in the understanding and use of varied paradata among researchers, and a greater focus on its use for improving data quality.     

美国对中国反倾销的变化趋势、原因及对策分析

自20世纪90年代以来,中国的资本密集型出口产品逐步替代劳动密集型出口产品成为美国的主要反倾销对象。美国对中国反倾销出现的这一变化趋势,一方面是由于中国劳动力价格上升,劳动密集型产品对美出口比例降低,另一方面是由于中国的资本密集型产品对美出口迅速增加对美国相关产业形成竞争压力。为了有效的应对美国的反倾销,无论是相关出口企业,还是国家政府部门都应给予足够重视,应坚持统一对外的方针,抵制低价出口行为;实施市场多元化战略;设立专门应对反倾销的机构,共同做好反倾销的预防工作和应对措施。     

Impacts of an EC carbon/energy tax and deregulating thermal power supply on CO2, SO2 and NOx emissions

Emission of CO₂, SO₂ and NO_x are all closely linked to the burning of fossil fuels. Here we report on simulations done by linking a Sectoral European Energy Model (SEEM), covering energy demand in nine Western European countries, with the emission-transport-deposition model RAINS developed by IIASA. The study analyses emissions of CO₂, SO₂ and NO_x, deposition of sulphur and nitrogen and the extent of areas where the critical load for sulphur is exceeded in year 2000 under four different energy scenarios. Two different sets of future behavioural patterns for the thermal electric power production sector are considered. In one regime, called the plan-efficient regime, the sector is assumed to follow official plans with regard to investment in new capacity. In the other regime, called the cost-efficient regime, the thermal power sector is assumed to behave in a cost minimizing manner. The effects of the proposed EC carbon/energy tax are studied under both regimes, giving rise to altogether four scenarios.In both regimes the effect of the EC tax is to reduce emissions by between 6 and 10 per cent in year 2000 relative to the scenarios without the tax. A change of regime, from the regulated, plan-efficient regime to the market-based, cost-efficient regime, will, by itself, reduce emissions of CO₂ and NO_x by approximately 3 per cent, while SO₂ emissions are reduced by 13 per cent. The EC tax will reduce sulphur deposition by more than 5 per cent in the nine model countries under the plan-efficient regime. A change of regime further reduces the total deposition by 9 per cent. The area where depositions exceed the critical load is reduced by approximately 6 per cent in year 2000 by the tax in both regimes. Changing from the plan-efficient to the cost-efficient regime has a similar impact.Although the emission reductions due to the EC tax may seem modest, they are shown to have a sizeable effect on the technological abatement costs of reaching targets like those prescribed in the Sofia protocol on the stabilisation of NO_x emissions, and the Helsinki protocol on SO₂ emission reductions. This is part of what can be considered to be secondary benefits of the EC carbon/energy tax.     

赵靖的中国经济思想史研究历程及学术贡献

赵靖先生是中国经济思想史学科的主要开拓者和奠基人.在半个多世纪的研究生涯中,他拓展了中国经济思想史的研究内容,提出了中国经济思想史特有的研究模式,构建了科学的学科研究体系.赵靖先生的中国经济思想史研究之路是20世纪后半期中国经济思想史学科发展的缩影.     

路面病害处理的土工格栅施工监理总结

土工格栅的应用很广泛,在水利工程、工民建工程和公路工程均有着大量应用。在路网改建项目,利用土工格栅进行路面病害处理,有效地减少反射裂缝、提高抗车辙能力和增加抗疲劳性能,防止基层产生过大的永久变形和疲劳破坏有着重要的作用。通过在世行贷款恢复类工程项目施工监理实践,对路面病害处理土工格栅施工进行总结。