Public Sector Capital and the Production Efficiency of U.S. Regional Manufacturing Industries

This paper applies a stochastic frontier production model with time-varying technical efficiency to investigate the relationship between public capital and technical efficiency. It is based on the proposition that public capital has an effect on actual output by enhancing technical efficiency, thereby reducing the gap between maximum potential output and actual output. Empirical results using panel data from U.S. state manufacturing industries during 1969–86 show that technical efficiencies varied substantially, both between states and between years; variations in technical efficiency are significantly explained by variations in public-sector capital.
JEL Classification Numbers: O20, H54, C23.     

中国企业“七剑”走出去

时代变迁,中国企业面对的已经是纷繁复杂且日趋加剧的国际竞争,由此也预示着企业必将在更大的范围、更广的领域、更高的层次上参与全球经济一体化运行。实施“走出去”战略、实现跨国经营已不单纯是一句口号,中国企业已经积聚实力,仗剑出击,以“七剑下天山”之势勇敢面对全球经济激烈竞争中企业发展壮大不可回避的选择。只不过,这一次出发,手中的七把重剑已经变成了七种更加有力的武器。     

南通市废旧轮胎回收利用现状的思考

橡胶作为高分子材料,具有高弹性的特征,被广泛用于国民经济的各个领域.随着经济的快速发展,我国于2002年首次超过美国而成为世界橡胶消耗第一大国(见表1).随着橡胶制品的大量使用,废橡胶产生量也同步增长,这给废橡胶的综合利用带来了新的挑战和机遇.废橡胶的主要来源是废旧轮胎,占废旧橡胶来源总量的70%以上;其次是废旧橡胶制品,占20%以上.过去一直被视作"黑色污染"的废旧橡胶,伴随着循环经济的发展,其再利用价值为社会各界所关注.     

农村劳动力转移模型:基于中国制度背景的构造

本文在对经典的农村劳动力流动模型进行理论梳理的基础上,引入中国的制度变量,试图构建适合中国制度背景的农村劳动力转移模型,同时,运用经验事实对其作进一步的实证检验,并分析了模型的政策含义。     

Intelligent Order Matching Systems for Commodity Markets

Automatic order matching systems have emerged as an electronic alternative to traditional markets. In current automatic order matching systems, price and quantity are the only product dimensions used for the order matching. However, a single-commodity market is made up of many heterogeneous goods which are close to each other but different in qualities and delivery conditions. Price and quantity are important but represent only parts of product attributes that commodity traders want to take into account. This study aims to extend current automatic order matching systems by diversifying product dimensions. An intelligent order matching system not only maximizes the total transaction volume based on the price and quantity but also satisfies traders' qualitative preferences over attributes other than price and quantity. The intelligent order matching mechanism combines an economic model with a preference model to incorporate both quantitative and qualitative utility of market participants. Constraint logic programming is investigated as a new information technology to structure and implement the intelligent order matching system.     

An appreciation of our referees

Editorial

An appreciation of our referees     

执政经济成本的效益测评

执政是要支付成本的。执政经济成本的高低与执政的业绩有很大联系。“提高执政效率”是党的十六届四中全会《决定》中的一个重要思想。要提高执政效率,就必须考察执政的成本与效益之间的关系,开展对执政的经济成本效益及其测评方法的研究。     

基于Agent的物流配送决策支持系统研究

物流配送是一个涉及多种影响因素的综合性复杂问题。本文探讨了基于Agent(智能体技术)的物流配送决策支持系统设计，在该系统中的智能体模型中引入学习机制，初步建立了一个具有专家系统特点、可以不断进化的物流配送决策支持系统。