International Trade,Offshoring and Heterogeneous Firms

Recent trade models determine the equilibrium distribution of firm‐level efficiency endogenously and show that freer trade shifts the distribution towards higher average productivity because of entry and exit of firms. These models ignore the possibility that freer trade also alters the firm‐size distribution via international firm migration (offshoring); firms must, by assumption, produce in their “birth nation.” We show that when firms are allowed to switch locations, new productivity effects arise. Freer trade induces the most efficient small‐nation firms to move to the large nation. The large country gets an “extra helping” of the most efficient firms while the small nation's firm‐size distribution is truncated on both ends. This reinforces the large‐nation productivity gain while reducing or even reversing the small‐nation productivity gain. The small nation is nevertheless better off allowing firm migration.     

Trade Liberalization with Heterogeneous Firms

This paper examines the various aspects of trade liberalization with heterogeneous firms using the Melitz (2003 ) model. We find a number of novel results and effects including a Stolper–Samuelson‐like result and several results related to the volume of trade, which are empirically testable. We also analyze what might be called an anti‐variety effect as the result of trade liberalization. We show that this effect is most pronounced for small countries. This resonates with the often voiced criticism from antiglobalists that globalization leads the world to become more homogeneous by eliminating local specialties. Nevertheless, we find that trade liberalization always leads to welfare gains in the model.     

Technology Diffusion through Trade with Heterogeneous Firms

I investigate the long‐run implications of trade and technology diffusion through trade, when firms are heterogeneous and trade is costly. This paper integrates firm heterogeneity and trade into a product innovation growth model from endogenous growth theory. I find that although exposure to trade increases average productivity, it has an ambiguous effect on economic growth and consumer welfare.     

不完全契约条件下的贸易、投资与国际生产组织

文章运用一个多阶段生产模型分析了全球性产业中企业边界和生产区位的内生决定问题.在契约不完全条件下,企业根据利润最大化原则确定各个生产阶段的所有权和区位结构,最终形成了出口型国内企业、横向型和纵向型国际生产三种均衡形态.不同组织形态的产生取决于分工结构、契约环境、规模经济、生产成本和贸易成本等因素的共同作用,反映了全球经济中贸易、投资和企业组织之间的相互关系.     

Comparative Advantage and Heterogeneous Firms

This paper examines how country, industry, and firm characteristics interact in general equilibrium to determine nations' responses to trade liberalization. When firms possess heterogeneous productivity, countries differ in relative factor abundance, and industries vary in factor intensity, falling trade costs induce reallocations of resources both within and across industries and countries. These reallocations generate substantial job turnover in all sectors, spur relatively more creative destruction in comparative advantage industries than in comparative disadvantage industries, and magnify ex ante comparative advantage to create additional welfare gains from trade. The improvements in aggregate productivity as countries liberalize dampen and can even reverse the real-wage losses of scarce factors.     

Technical Progress,Urban Unemployment and Heterogeneous Firms

We construct a general equilibrium model of urban unemployment with a continuum of heterogeneous urban firms producing differentiated products in a monopolistic competitive market. We introduce a notion of pattern of technical progress among the heterogeneous urban firms and show that this pattern plays a crucial role in determining the effects of urban technical progress in a developing economy. In particular, we show that the possibility of immiserizing technical progress depends on the pattern of progress among the heterogeneous urban firms.     

异质性企业、结构转型与稳定出口

通过构建异质性企业、结构转型和出口增长的二元边际理论模型,本文认为转型国家出口增长主要沿集约边际实现的原因与其农业剩余劳动力有关,农业剩余劳动力越多,出口增长的集约边际越大、扩展边际越小。利用Tobit模型对1995-2009年中国出口到123个国家的HS-6位码贸易数据进行实证分析,在控制其他影响因素的前提下,我国农业剩余劳动力非农转移显著正向影响出口增长集约边际、负向影响扩展边际的效应确实存在。经济规模、贸易成本、人民币升值、区域经济一体化、外部冲击、语言的相通性、政治体制等变量对中国出口增长二元边际的影响机制不完全相同,表明要提高出口增长中的扩展边际比重,出口企业应实施市场多元化战略,将目标市场从传统高收入国家转移到发展中国家来,实现出口的稳定增长。     

国外异质性厂商贸易理论研究综述

异质性厂商贸易理论代表了国际贸易理论最新发展趋势,研究的是微观经济主体--厂商的贸易和投资行为与自身特征的关系.厂商的市场进入方式与其生产率水平是相对应的,出口和贸易自由化能够提高行业生产率,汇率变化、贸易政策和产业集聚对厂商出口具有重要的影响,厂商进入出口市场前后存在自我选择效应和出口中学习效应,这两种效应都导致厂商生产率提高,最终生产率最高的厂商将以对外直接投资的方式进入国际市场.     

The Productivity Effects of Worker Mobility Between Heterogeneous Firms

We analyze the effect of worker inflows on establishments’ productivity, using German data. Previous studies for other countries have found positive effects of hiring workers from superior (more productive or higher paying) firms. Ranking establishments by their median wage, we find that inflows from inferior establishments seem to increase hiring establishments’ productivity. Further empirical analyses suggest our findings are due to a positive selection of such inflows from their sending establishments. These workers might have to find a better job match in order to advance their careers, an interpretation supported by the finding that the effect is driven by workers with short tenure at their previous employer. Our findings reflect the increasingly assortative pattern of worker mobility in Germany found in a related strand of literature.     

中国会计师事务所迎战国际会计公司的对策

中国加入WTO后，会计师事务所将面临严峻的挑战已不可避免，本文从会计市场，服务领域，人才培养等方面论述了中国会计师事务所迎战国际会计公司的对策。     

贸易、FDI和企业的组织形式

1．前言国际贸易和外国直接投资(FDI)一直以来都身居全球增长最快的经济活动之列。2003年,全球货物出口额直逼73,000亿美元,全球商业服务出口额将近18,000亿美元；同时,全球FDI流入额也接近5,600亿美元。然而,在1990年到2001年跨国公司海外分支机构营业收入的扩张速度甚至要比全球货物出口和非要素服务出口的迅猛增长快得多。服务业FDI前所未有的扩张是该增长的一个显著特点：1990年,服务业FDI流入累积额为9,500亿美元,而到了2002年,该数值已增加到40,000亿美元。2001-2002年,投资到服务业的FDI占总FDI流入额的2/3。     

Trade and Industrial Policies with Heterogeneous Firms: The Role of Country Asymmetries

This paper explores the role of country asymmetries for trade and industrial policies with heterogeneous firms. The analysis delivers a number of novel results. First, trade policies, infrastructure policies and industrial policies which improve the business conditions in one country have negative productivity and welfare effects on the trading partner. Second, symmetric trade liberalization is immiserizing for a trading partner whose business conditions are inferior. Third, there are gains from trade even for a country whose monopolistically competitive sector with heterogeneous firms is wiped out by switching from autarky to trade.     

Tax Reform,Delocation, and Heterogeneous Firms*

The standard international tax model is extended to allow for heterogeneous firms when agglomeration forces are important, enabling us to study the relocation effects of taxes that vary according to firm size. We show that allowing for heterogeneity permits a given tax scheme to have an endogenously different effect on the location decision of small and big firms, with the biggest firms being endogenously more likely to relocate in reaction to high taxes. We show that a reform that flattens the tax–firm–size profile can raise tax revenue without inducing any relocation.     

The Impact of Unionization Structures with Heterogeneous Firms and Rent‐Sharing Motives

How are unemployment and output affected if wages are set on the sector level rather than firm level? We take a new look at this question, allowing for heterogeneous firms and rent‐sharing motives. Without these motives, employment and output are lower under sector‐level wage‐setting due to higher wage markups. With rent‐sharing motives, however, firm selection is higher under sector‐level wage‐setting, which tends to increase employment and output, thus counteracting the markup effect. Simulations show that the firm‐selection effect decreases the difference between the two unionization structures substantially but it does not change the signs of the effects on output and employment.     

Heterogeneous Firms in Importing: Theory and Evidence from China

In this study, I explore the effects of the financial status of firms on its decisions to import. The import decision is reflected in various aspects, such as whether to import or buy from home market; what types of goods to import, etc. A novelty of this analysis is that I distinguish between ordinary trade and processing trade, which involves importing inputs to be assembled and re-exported. Several novel patterns emerge. Firstly, a firm’s financial status, especially its liquidity, significantly influences its decisions to import. Secondly, regional financial development also has a significantly affect importing decisions. However, a firm’s creditworthiness and regional factors work independently (i.e., regional financial development does not alleviate a firm’s credit constraints). The findings yield implications for developing economies which demand technological spillovers from advanced markets and those which maintain large trade surpluses with the developed economies.     

组织裂变与传统优势企业空间扩张

随着城市化进程的加快和大都市群的形成,企业向大城市聚集和异地扩张的优势日益显现。对于分布在中小城市、偏远地区、老工业基地的传统优势企业而言,顺应这种趋势,将管理总部或营销部门等组织机构向中心大城市迁移,通过组织裂变实现异地扩张,就成为现实的选择。     

The Interaction Between Technology Adoption and Trade When Firms are Heterogeneous

This paper develops a monopolistic competition model with heterogeneous firms to study the interaction between technology adoption and trade in a world of two countries facing different technology adoption costs. It shows that a reduction in the technology adoption cost in one country increases productivity, induces more firms to adopt advanced technology, and improves welfare in this country, while decreasing productivity, inducing more firms to switch back to old technology, and reducing welfare in the other country. Furthermore, although a reduction in transport costs always makes the country with the lower adoption cost better off, it can hurt the other country.     

论精益化生产方式的组织创新

从组织创新的角度总结出精益化生产方式的7个组织特征，运用交易费用理论分析说明了精益化生产方式为什么能够通过组织创新达到杜绝一切浪费，彻底降低成本的目标，用知识存量论解释说明其它企业难以效仿精益化生产方式的原因。