An extension of the multi-output state-contingent production model

This paper presents new developments on the state-contingent theory of production under uncertainty with stochastic prices. Our main purpose is to generalize the usual finite discrete state-contingent production model to infinite dimensional, possibly uncountable spaces which look like a more realistic framework. Usual duality results are established in this general context, shedding some light on the links between risk-neutral probabilities and shadow prices. A direct generalized production risk premium is defined and is shown to be independent of the inputs level when the technology is output translation homothetic. In such a case, the technology exhibits constant absolute riskiness. We thank Bob Chambers for his helpful comments.     

Competitive trade models and real world features

Competitive small-dimension international trade models perform well in comparing free (or restrictive) trade with autarky, especially in emphasizing that consumption patterns can differ from production patterns and that production becomes highly concentrated while consumption patterns are expanded. Variations on these small-dimensional models can usefully show how with trade production patterns may nonetheless be more diverse and a country’s labor force become more heterogeneous in its skills. The paper illustrates how the Middle Products framework can be reinterpreted to support variety in production and in labor skills.      

中小企业板公司上市前后绩效变动的实证研究

本文以2004—2005年在我国中小企业板上市的50家上市公司为研究对象,从净资产收益率、主营业务收入增长率和营业利润增长率三个指标出发,研究了中小企业板上市公司IPO前后的业绩变化是否具有显著性,并对引起业绩变化的相关因素进行了回归分析。研究结果表明:公司上市后的净资产收益率、主营业务收入增长率和营业利润增长率都出现了不同程度的下降;位于中西部地区的上市公司的整体绩效表现优于位于东部地区的上市公司;上市公司的管理层持股比例高、第一大股东持股比例高,其上市后业绩的下滑更明显;流通股比例对中小企业板公司上市前后的业绩影响不具有统计意义上的显著性。     

科技型创业者的创业背景研究——以福建沿海地区为例

在对科技型创业者创业背景的研究进行回顾的基础上,本文以针对福建沿海地区科技型创业者所做的调查为基本依据,对福建沿海地区科技型创业者的家庭背景、教育背景、年龄背景、性别背景、专业背景、工作经历背景等进行了探讨和分析,并将调研结论与现有创业学中有关创业背景的研究结论进行了比较。     

城市内涝的预防

随着城市化进程步伐的加快和路面普及率的提高,地面的存水、泄洪能力大大下降,雨水的径流量不断增大,当暴雨来袭,设计不科学的排水系统,加上人为等因素,势必造成内涝,既严重阻塞交通,又影响市民出行.就城市内涝的预防谈了几点见解.     

珠三角产业集群发展中技术创新与扩散

特色产业集群蕴含着一个经济区域的核心竞争力.珠三角各主要城市的核心竞争力,来自于根植性极强的专业镇和产业集群.不断地进行技术创新是提升区域核心竞争力的有效途径,但技术的公地悲剧难题使产业集群的创新动力弱化.为此,有必要加强政府主导下的技术创新与扩散.     

关于我国商业银行人力资源管理实践性问题的探析

人力资源是组织的核心资源,是组织可持续发展的根本保障。随着全球经济一体化的进一步发展,我国金融业扩大对外开放,外资银行大量涌入,使我银行业的竞争日趋激烈。我国商业银行的人力资源管理制度滞后,人才分布结构不合理,机制不完善等一系列的问题凸显,文章在分析银行人力资源现状的基础上提出了完善人力资源管理的对策。     

Coming and going: Experiments on endogenous group sizes for excludable public goods

When a public good is congestible, individuals wanting to provide the public good face challenges in forming groups of optimal size, selecting the members of the group, and encouraging members to contribute for the public good. We conduct a series of experiments in which subjects form groups using three different entry and exit rules. The experimental results are analyzed in terms of group size, the level of public good provision, social efficiency, congestion and group stability. We find that entry restriction improves the average earnings for some individuals compared to free entry/exit or restricted exit. For a given group size, individuals under the restricted entry rule contribute more for the provision of the collective good. Also, for a given average contribution level of group members, subjects under the restricted entry rule suffer less from the congestion problem and are better able to form groups of sizes closer to the optimal.     

A model of adjuncts in higher education

We examine the phenomenon of the expanded use of non-tenure-track positions (“adjuncts”) and construct a supply-side Harris–Todaro model. Low adjunct wages are attributable to a “Hope Rent” from the gap between private opportunities and tenure-track utility.