Market competition, social welfare in an entry-constrained differentiated-good oligopoly

This paper studies a differentiated-good oligopoly where the socially optimal number of firms (varieties) may be smaller or greater than under the free-entry equilibrium. We show that, under certain conditions, social welfare may be higher when entry is restricted into the industry.     

基于体验经济背景的城市休闲产业集群构建研究

本文从体验经济视角寻求休闲需求产生与发展的理论根源,分析体验经济背景下城市休闲产业的发展特征,认为产业集群组织模式是城市休闲产业发展的关键因素之一,重点探讨了休闲产业集群的增长极效应及其构建理念,并提出基于体验经济的城市休闲产业集群构建要素.     

物流房地产理性投资之管见

本文从对物流房地产业态解析入手,围绕物流房地产投资效益问题,主要采用对比分析法,对住宅房地产与物流房地产投资项目成本收益进行对比分析,井就物流房地产如何做到理性投资提出几点见解.     

数据挖掘技术在证券业营销策略分析系统中的应用

我国证券市场的建立与发展,取得了举世瞩目的成就.随着"以客户为中心"的经营理念的不断深入人心,分析客户、了解客户并引导客户的需求已成为企业经营的重要课题.本文针对当前我国证券行业的背景进行了深入的分析,着重从证券行业营销策略中应解决的关键业务及关键问题入手,充分利用数据挖掘技术等先进技术对当前证券行业营销策略分析提出了行之有效的系统解决方案.     

ICT growth effects at the industry level: A comparison between the US and the EU

This is an empirical study on the growth impact of Information and Communication Technologies using industry-level data for the US and the EU industries over the period 1980-2000. A panel data approach is employed to estimate the ICT effect using the system GMM and the pooled mean group panel data estimators. The results vary depending on the period, the region, and the type of industry considered. The GMM estimates suggest a significant ICT effect on growth during the 90s both in the US and in the EU. This effect for the EU was strong in the early 90s and weakened afterwards, as opposed to the US where it strengthened in the late 90s. The results of the pooled mean group estimator confirm that the long run growth contribution of ICT was significantly positive in the industries of both regions and over the entire period 1980-2000. However, it seems that the productivity effects of ICT are mainly present in the industries which are either ICT producers or heavy ICT users.     

生产性服务业发展、制造业升级与就业结构优化——“民工荒与大学生就业难”的解释与出路

近年来出现的"民工荒与大学生就业难"并存现象,从表面上体现了我国就业市场上供求结构的失衡,但从本质上反映了我国产业结构不合理、制造业处于全球价值链低端环节、增值能力不强的困境.加快发展生产性服务业,促进制造业转型升级,并以生产性服务业发展和制造业转型升级"双轮驱动",优化就业市场结构,是解决"民工荒与大学生就业难"悖论的有效途径.     

从上海国际化工城看绿色集群的创新模式

我国在发展化工产业时应当站在“绿色化工”的基础上集群式发展．避免走先污染、再治理的老路。本文以上海市国际化工城集群式发展绿色化工产业为例，在重点分析国外化工产业集群发展和金山绿色化工产业集群特点的基础上．进一步提炼了“绿色集群”的内涵及其创新意义。     

基于层次分析法的广西再生铜产业SWOT分析

文章运用SWOT分析方法从定性角度分析广西再生铜产业在发展过程中所面临的机遇与威胁以及优势和劣势,然后运用层次分析法定量分析影响广西再生铜产业的各种内外部因素,得出:(1)在当前外部环境下广西再生铜产业发展中面临的最大机会是铜的市场需求很大,而最大的威胁是再生铜原料供应日趋紧张;(2)在当前内部环境下广西再生铜产业发展中最大的优势是地理区位优势,而最大的劣势在于技术装备水平落后。最后采用SWOT四边形的方法选择出适合广西再生铜产业发展的SO战略。     

Existence of Equilibria in Matching Models of Money: A New Technique

This paper develops a new technique for proving the existence and indeterminacy of monetary equilibria in money search models with divisible money. Our technique is substantially simpler than standard constructive proofs in the literature. This paper is based on the second half of Kamiya and Shimizu (2002). We are very grateful to the associate editor and an anonymous referee of this journal for their very detailed suggestions and comments. This research is financially supported by Grant-in-Aid for Scientific Research from JSPS and MEXT. The second author also acknowledges the financial support by Zengin Foundation for studies on Economics and Finance.     

Regional and Sector-specific Determinants of Industry Dynamics and the Displacement–replacement Effects

In this paper, we empirically assess the importance of regional and sector-specific determinants of industry dynamics. To this aim we test three hypotheses (originally proposed by Shapiro and Khemani (1987, Int J Indust Organ 5:15–26)) for the relationship between the entry and exit of firms: independence, symmetry and simultaneity. Estimates from a panel data system of equations seem to confirm the simultaneity hypothesis for Spain, i.e. we find evidence of a displacement (replacement) effect between the gross rate of entry (exit) and the gross rate of exit (entry). Also, our results show that, irrespective of the hypothesis we use, both sectorial and regional variables affect entry and exit.