Effect of Parental Migration on Children's Health in Rural China

Using 2003–2006 RCRE (Research Center for Rural Economy) panel data, we estimate the effect of parental migration on the health of children left behind, with a difference‐in‐differences and propensity score matching combined model. On average we do not find any significant effect on children's health; however, the effect varies among different groups. Children's health may improve as a result of parental migration in families with lower income in the base year and families with higher‐income growth rates. Furthermore, children's health may deteriorate with maternal migration but improve with longer distance of paternal migration and longer time of paternal migration. We argue that parental migration affects children's health through complex mechanisms: income increase may have a positive impact while decreased parental care may have a negative effect. The two effects seem to offset each other in rural China.     

Welfare effects of payment truncation in piece rate tournaments

This article analyzes the optimal response of a principal to the regulatory proposal which would truncate agents’ bonus payment in a piece rate tournament at zero. In a model with risk-neutral and heterogenous abilities agents, we analyze the principal’s problem of optimal choice of contract parameters under both regular and truncated tournament scenarios. The results show that the principal could significantly mitigate potential welfare losses due to tournament truncation by adjusting the payment scheme. The optimal adaptation to tournament truncation results in a situation where both higher and lower ability players would benefit from the policy while average ability players would lose.     

Purification, saturation and the exact law of large numbers

Purification results are important in game theory and statistical decision theory. We prove a new purification theorem that generalizes several earlier results. The key idea of our proof is to make use of the exact law of large numbers. As an application, we show that every mixed strategy in games with finite players, general action spaces and diffused, conditionally independent incomplete information has many strong purifications.     

皖江地区文化创意产业发展对策研究

SWOT分析结果认为,皖江地区既具有文化、地理、人力资源、平台优势,也存在意识薄弱、人才匮乏和资金投入不足的局面;既面临国内外良好环境和作为示范区的机遇,也面临统计体系建设、同业竞争和培养区域文化认同感的挑战。发展皖江地区文化创意产业的对策就是要加强产业理论研究;健全人才培养、激励计划;完善产业融资渠道;构建产业统计体系;凸显差异化发展模式;培养区域文化认同感。     

应用型高校大学生综合素质调查——以铜陵学院为个案

文章以铜陵学院学生为调查对象,从学习认知能力、交流沟通能力、就业创业能力和团队合作能力四个方面分析应用型高校大学生的综合素质现状,并根据调查结果显示的问题提出提高大学生综合素质的建议。     

Incomplete contract, bargaining and optimal divisional structure

When complete contracting is not possible, allocating control structure becomes the second-best arrangement. This paper analyzes the design of optimal divisional structure within an organization where ex post bargaining between the potential divisional managers is possible. In much the same light as Aghion and Tirole (J Political Econ 105(1):1?C29, 1997), we study the control problem in the context of search for projects. Our model shows that when the managers cannot bargain with one another, internal integration is preferred to internal separation. Where bargaining is possible, formal divisional structure defines both the ex post bargaining position of the two managers and their incentive to search ex ante. When the managers tend to arrive at a more favorable project to the principal via bargaining, the general leader of a firm may want to choose separation instead to increase the probability of bargaining, as the symmetrical incentive requires both managers to search and get informed.     

Inventories, Manufacturer Returns Policies, and Equilibrium Price Dispersion under Demand Uncertainty

Returns policies can prevent a manufacturer's product from being discounted. Such discounting discourages inventory holdings, and can deny adequate retail representation to products with uncertain demand. We demonstrate that returns are not simply a substitute for resale price maintenance, but can instead be employed to support a desirable degree of price dispersion at retail. Surprisingly, optimal return policies depend only on market demand functions and marginal production costs. The manufacturer need not know the distribution of demand uncertainty for its product, but can instead rely on retailers to order appropriately. Our results generalize to oligopoly settings.     

The Lowest Supply and Demand of Engineering Officers of National Vessels in Taiwan

This article is based on the number of engineering officers from 1994 to 2000 in Taiwan, and adopts a 6-year moving average to work out the transition probability of engineering officers and to construct an absorbing Markov Transition Matrix to forecast the terms of seniority and annual supply in each hierarchy. In order to estimate the minimum number of vessels needed, this article also employed the quantity of demand for imported consumer goods from 1994 to 2000 in Taiwan and applied a Grey model to predict the annual quantity of demand for imported consumer goods. Furthermore, this article estimated the minimum number of demand for engineering officers according to the minimum number of vessels needed. In addition, this paper used cross-analysis to investigate the manpower supply and demand of engineering officers in Taiwan and obtained some important results, which can be valuable references for pertinent authorities.     

Characterizations of negative multinomial distributions based on conditional distributions

In this paper characterizations of negative multinomial distributions based on conditional distributions have been studied.     

分析师跟踪、内控有效性与科技型中小企业创新

基于2009-2017年创业板317家科技型中小企业数据,从发明专利产出视角,探究分析师跟踪、内部控制有效性与企业技术创新的关系。结果显示,分析师跟踪人数显著提升了企业发明专利产出,内部控制有效性在分析师跟踪人数与企业发明专利产出关系中起部分中介作用,且在融资约束程度较高的企业中更为显著。即企业内外部治理机制有效配合对科技型中小企业技术创新发挥促进效应,且该效应在企业融资约束程度较高时更为显著。