Plastic wastes and the market penetration of auto shredders

In recent years the increased interest in the recycling of plastic wastes has lead to the development of numerous technological approaches to utilizing plastic wastes of varying qualities and types. A major problem with these technologies, however, is the unacceptable contamination levels in the available wastes. This paper examines one area from which relatively uncontaminated plastic wastes can be obtained—shredder residue from automotive shredder operations. In addition to reviewing the historical adoption of shredders, this paper uses econometric approaches to investigate the extent to which the shredder technology has penetrated the market for scrap steel. These approaches suggest that the movement toward shredders and away from the more conventional baler operations that have historically been used to process retired autos is slowing.     

劳动力市场的横向分割与纵向分割之比较

本文以劳动力市场的横向分割与纵向分割两种分割系统为线索,力求对分割理论和现实情况进行勾勒与诠释,主要从生成因素、经济效应、应对之策三个维度对两者展开比较,试图对该研究领域的诸多观点进行梳理与整合。     

换工作对收入水平和收入增长的影响

本文利用中国社会科学院2002年的CHIPS数据,分析了换工作对于劳动者收入水平和收入增长的影响。本文通过控制初始的收入水平来解决异质性的影响。结果表明,对于初始收入水平较低的样本,换工作对其收入有正的影响,而对于初始收入较高的样本,换工作则有负的影响。如果直接考察换工作对于收入增长的影响,给定初始收入和其他特征,换工作对于收入增长的平均影响是正的。不仅如此,换工作对于低收入者的收入增长有较大的正的影响。     

Productivity differences and the dynamic effects of labor movements

Barriers to labor mobility across countries coexist with substantial differences in living standards largely attributable to productivity differences. A growth model with endogenous labor movements is used to assess the effects on output, capital accumulation and welfare of removing barriers to labor mobility. The model is parameterized so that it is consistent with evidence on historical labor movements, and is applied to two cases: the enlargement of the European Union and the (hypothetical) creation of a common labor market in the North America. The main finding is that there are large resulting gains in terms of output and welfare.     

基于新兴古典经济学、交易成本经济学的产业集群演进机理探析

新兴古典经济学认为,在专业化经济和交易成本之间总是存在着非常复杂的两难冲突,交易效率的改进将会扩大分工经济与交易成本折衷的范围,从而提高生产者的专业化生产程度。交易成本经济学认为,不确定性、交易频率和资产专用性决定了经济活动主体的治理结构安排,随着三个变量水平的变化,其治理结构由于节约交易成本的原因,将经历市场、企业、网络组织的三种形态变化。文章运用新兴古典经济学与交易成本经济学思想,考察了劳动分工、交易效率与产业集群演进的互动关系,认为产业集群的形成与发展是一个劳动分工深化、交易效率提高(交易成本降低)的过程。在此基础上,文章对杨小凯的基于专业化经济的劳动分工模型进行了拓展和深化,以便对产业集群的演进机制进行深入分析,并通过模型分析支持了本文的观点。因此,产业集群的形成与发展有其自身的内在规律。当前,政府更为紧迫的任务是要注重产业集群软环境的建设,以此降低交易费用,促进产业集群的持续、健康发展。     

中国制造业劳动力成本上升的正负效应分析

劳动力作为生产的重--素投入,在经济发展中起着举足轻重的作用。根据古典贸易理论,我国存在着明显的劳动力比较优势,带来了我国对外贸易依靠国内大量存在的廉价劳动力的长期繁荣发展。然而,进入21世纪以来,劳动力成本的上升日益显著,我国的人口红利正在逐渐消失。通过对我国制造业劳动力成本上升的现状及其负面效应、正面效应的分析,认为我国应从国家层面、产业层面以及企业层面来应对劳动力成本上升带来的影响。     

Innovation, R&D cooperation and labor recruitment: evidence from Finland

This article investigates the role played by one type of firm interaction, namely R&D cooperation, and also the acquisition of labor, in the promotion of industrial innovations. We employ a unique innovation dataset from Finland which combines firm specific information about the innovation performance of the firms along with their individual characteristics, as well as firm specific information regarding the origins of their recent labor acquisitions. Analyzing this data allows us to identify the different roles which the knowledge spillovers and labor markets play in the innovation process. Our results suggest that small firms are generally more innovative than large firms; R&D cooperation is an essential feature of innovation, but the variety of cooperation is of little importance; and labor acquisition appears to be only of limited importance for innovation.

When trade hurts: Consumption indivisibilities and labor market distortions

We present a simple model where complementarities between wages and demand due to factor market distortions can make a transition economy worse off from trade. Prior to trade, a virtuous circle prevails: high wages in industry support a high demand for indivisible industrial goods, which in turn supports high wages. However, factor market distortions in the transition economy create a comparative disadvantage in industry. Opening up to trade results in the import of indivisibles and a fall in manufacturing wages, breaking this virtuous circle. Consequently, trade liberalization without structural reform can have serious adverse effects in a transition economy.     

论就业机会产品失灵问题的政府治理

中国劳动力市场的典型特征是就业机会与劳动力资源之间的信息分布不对称,而就业机会实质上是一种公共产品。根据市场失灵理论,解决公共品市场失灵问题时政府与市场两条思路均可采用。文章沿袭自古典经济学家庇古以来的传统,认为应该引入政府的干预来解决就业机会的市场失灵问题,并在此基础上提出相应的建议。     

Gender Effect in Explaining Mobility Patterns in the Labor Market: A Case Study of Turkey

This paper examines the importance of gender for different job mobility patterns using an extensive household survey data from İzmir, the third largest city in Turkey. The determinants of job‐to‐job and job‐to‐nonemployment transitions are analyzed with the help of a multinomial logit estimation method. The results indicate that there is a distinction regarding the probability of job mobility patterns based on gender. It is more likely for women to be engaged in job‐to‐nonemployment transition, whereas men tend to change jobs more often. Although gender plays a significant role in job mobility patterns, traditionally imposed social constraints associated with childcare and household duties provide us with mixed results considering the behavior of women in the job market. On the other hand, having highly paid and secure jobs decreases the probability of both patterns of job mobility.