Time series approaches to Italian regional convergence

This article investigates the evolution of the gap between Italian regions and Italy as a whole during the period of 1980 to 2007. We tested for the presence of the stochastic and β-convergence hypotheses using different time series approaches. The former was studied, first, for the entire sample period and then, with an exogenous instantaneous break in the series. The presence of β-convergence, instead, was estimated considering a known and an unknown trend break date model. Our results show that most of the regions do not converge in an ‘actual’ way, since they do not present a stochastic and β-convergence simultaneously.     

Private versus public consumption within groups: testing the nature of goods from aggregate data

We study the testability implications of public versus private consumption in collective models of group consumption. The distinguishing feature of our approach is that we start from a revealed preference characterization of collectively rational behavior. Remarkably, we find that assumptions regarding the public or private nature of specific goods do have testability implications, even if one only observes the aggregate group consumption. In fact, these testability implications apply as soon as the analysis includes three goods and four observations. This stands in sharp contrast with existing results that start from a differential characterization of collectively rational behavior.     

Innovation And Inter-Firm Co-Operation: The Case Of The West Midlands

Drawing upon the innovative milieux and industrial districts literature, the paper provides substantial empirical evidence that firms have a greater chance of being innovative if they co-operate with other firms over innovation, albeit undertaking no investment in RLD. This is an important result especially for small firms. In particular, the paper focuses on inter-firm cwperation along the supply chain, using a swey of firms in the West Midlands to investi-gate co-operation over innovation between suppliers and buyers. A probit model is used to test the link between innovation performance and four innovation inputs: R&D expenditure, R&D personnel, networking with suppliers and networking with client firms.     

EMPLOYMENT PROTECTION,TECHNOLOGY CHOICE,AND WORKER ALLOCATION

We show empirically that high‐risk sectors, which contribute strongly to aggregate productivity growth, are relatively small and have relatively low productivity growth in countries with strict employment protection legislation (EPL). To understand these findings, we develop a two‐sector matching model where firms endogenously choose between a safe technology and a risky technology. For firms that have chosen the risky technology, EPL raises the costs of shedding workers in case they receive a low productivity draw. According to our calibrated model, high‐EPL countries benefit less from the arrival of new risky technologies than low‐EPL countries. Parameters estimated through reduced‐form regressions of employment and productivity on exit costs, riskiness, and in particular their interaction are qualitatively similar for actual cross‐country data and simulated model data. Our model is consistent with the slowdown in productivity in the European Union relative to the United States since the mid‐1990s.     

中国制造业贸易模式变迁的工资差距效应

本文利用中国制造业27个细分行业的面板数据,采用固定效应不变系数的静态面板模型,考察了我国制造业从产业间贸易向产业内贸易的变迁对行业间工资差距的影响及其传导机制。研究结果表明：（1）在制造业贸易模式的变迁中,出口扩大了行业间工资差距,而进口缩小了行业间工资差距。（2）制造业贸易模式变迁主要通过价格机制扩大了行业间的工资差距,而技术机制和个体机制的影响则不显著。     

武汉城市圈生产性服务业对制造业效率提升作用的实证

采用武汉城市圈9个城市2000--2009年的面板数据,并结合影响制造业效率的其他经济变量,运用计量模型检验了武汉城市圈生产性服务业对制造业效率的提升作用。结果表明：生产性服务业的发展对武汉城市圈制造业生产率具有明显的正向提升效应,资本有机构成提高对武汉城市圈制造业生产率也有明显的促进作用,但劳动者素质和技能水平及外商直接投资作用不明显。最后,提出了进一步增强生产性服务业对武汉城市圈制造业效率提升作用的政策建议。     

Quotas and equilibrium relative prices in the trade restricting country

This paper is concerned with the effects of international trade restriction through quotas. It is shown that a casual relationship exists between the fraction of licences distributed domestically, the terms of trade, and the domestic relative price of the importable.