Mixed Duopoly,Merger and Multiproduct Firms

The literature on mergers has extensively analyzed the decision to merge by private firms, but it has not considered the decision to merge by private and public firms. We assume that when a private firm and a public firm merge (or when one of them acquires the other), they set up a multiproduct firm in which the government owns an exogenous percentage stake. In this framework, we show that the decision to merge by firms depends on the degree to which goods are substitutes and on the percentage of the shares owned by the government in the multiproduct firm.     

Publishing performance in economics: Spanish rankings (1990–1999)

Abstract. This paper contributes to the growing literature that analyses the Spanish publishing performance in Economics throughout the 1990s. Several bibliometric indicators are used in order to provide Spanish rankings (of both institutions and individual authors) based on Econlit journals. Further, lists of the ten most influential authors and articles over that period, in terms of citations, are reported. We are grateful to many colleagues who made very useful remarks to preliminary versions of this paper, as well as to two anonymous referees. We are particularly indebted to Xavier Sala-i-Martín, without whose invaluable help this work would not have been possible. All errors or omissions are of our exclusive responsibility.     

Enforcing Emissions Trading when Emissions Permits are Bankable

We propose enforcement strategies for emissions trading programs with bankable emissions permits that guarantee complete compliance with minimal enforcement costs. Our strategies emphasize imperfect monitoring supported by a high unit penalty for reporting violations, and tying this penalty directly to equilibrium permit prices. This approach is quite different from several existing enforcement strategies that emphasize high unit penalties for emissions in excess of permit holdings. Our analysis suggests that a high penalty for excess emissions cannot be used to conserve monitoring effort, and that it may actually increase the amount of monitoring necessary to maintain compliance.The authors are grateful to Anthony Heyes and three anonymous referees for their valuable comments. Partial support for this research was provided by the Cooperative State Research Extension, Education Service, U. S. Department of Agriculture, Massachusetts Agricultural Experiment Station under Project No. MAS00871.     

新"零售之轮" 理论与生鲜食品零售业态演化

在新"零售之轮"理论的基础上,从讨论我国消费者选择生鲜食品及购买场所的依据开始,分析超市和农贸市场相对于技术边界的市场定位.认为就备货幅宽而言,农贸市场是比超市服务水平更高的生鲜食品零售业态;消费者效用最大化的生鲜食品购买场所选择中,超市便利和舒适的购物环境是占权重较小的消费者评判指标;社会现有的技术边界线制约了生鲜食品超市业态向消费者偏好中心演化.     

甘肃省耕地资源禀赋与贫困关系的量化研究

文章对甘肃省87个县以及其中的43个国家贫困县的耕地资源指标和贫困指标进行了相关分析,得出的结论是:甘肃省耕地资源禀赋与贫困之间没有相关性。因此要解决甘肃省的贫困问题,保证粮食安全战略,进而实现可持续发展的目标,必须提高土地质量,发展生态农业,增加单位面积的产出,并调整农业产业结构。片面扩大耕地面积不仅不能够提高粮食产量,反而会造成发展的不可持续性。     

基于生态足迹模型的可持续性度量研究--以吉林省大安市为例

针对吉林省大安市发展现状和存在的严重生态环境问题,运用生态足迹模型,采用多源数据,首次对大安市生态环境的可持续发展状况进行了定量研究;在此基础上,运用相对指标法对可持续发展的量化结果进行分级。研究表明,2001年大安市的生态需求大于生态供给,生态呈现“供不应求”的局面,人均生态赤字为0.56hm2,处于弱不可持续发展状态。     

城市商圈布局的三维动态模型构建与述评

商贸产业是维系一个城市经济运转的原动力之一,城市商圈是这个经济发展动力的重要载体.本文在吸收西方经典商圈理论模型的基础上,结合我国城市商圈发展现状,从外部环境、内部成长和时间三个维度分析其影响因素,构建了城市商圈布局的三维动态模型,以期对城市商圈布局和城市经营提供一定的现实参考价值.     

我国企业危机管理中的对策研究

现代企业在当今复杂多变的商业环境中运营,无时无刻都在面临着各种危机的威胁。本文从我国企业危机管理的现状出发,分析了我国近几年出现过危机的企业产生危机的主要原因,并进而提出了正确处理危机的方法和对策。     

我国企业信用约束机制探析

良好的信用有助于经济的可持续发展,而我国目前被企业信用问题困扰。建议在企业信用数据库的基础上,实现信用资源共享来构建企业信用约束机制,形成失信者"一处失信、处处被动"的失信联防机制,来约束企业的信用行为。