The Choice of Technology and Rural-Urban Migration in Economic Development

This paper studies a general equilibrium model of rural-urban migration in which manufacturing firms engage in oligopolistic competition and choose increasing returns technologies to maximize profits. Urban residents incur commuting costs to work in the Central Business District. Surprisingly a change in the size of the population or an increase in the exogenously given wage rate will not affect a manufacturing firm’s choice of technology. This helps to explain why firms in developing countries may not adopt labor intensive technologies even under abundant labor supply. An increase in the number of manufacturing firms increases both the employment rate and the level of employment in the manufacturing sector. However, manufacturing firms choose less advanced technologies. Capital accumulation leads manufacturing firms to choose more advanced technologies, but may not increase employment in the manufacturing sector.     

Unemployment and Economic Integration for Developing Countries

While financial or trade integration between countries may increase the size of the market and aid the adoption of more advanced technologies, will it also increase the level of urban unemployment for a developing country? In this model, there is unemployment in the urban sector. Manufacturing firms engage in oligopolistic competition and choose increasing returns technologies to maximize profits. Financial firms provide capital to manufacturing firms and they also engage in oligopolistic competition. We show that an increase in the wage rate in the manufacturing sector changes neither the level of technology nor the level of employment in the manufacturing sector. While financial or trade integration between developing countries leads manufacturing firms to adopt more advanced technologies, the level and rate of employment in the manufacturing sector will not deteriorate.     

The choice of technology in economic development

The impact of capital accumulation on job creation is an important and interesting issue in economic development. This model provides a general-equilibrium framework for studying technology choice with unemployment in a developing economy based on micro-foundations. Unemployment in the urban sector results from the existence of efficiency wages. Manufacturing firms engage in oligopolistic competition and choose technologies to maximise profits. A more advanced technology uses more capital and less labour. In the steady state, an increase in the amount of capital induces firms to choose more advanced technologies and the wage rate increases. While a higher capital stock always induces firms to choose more advanced technologies, urban unemployment rate may decrease and agricultural sector employment may increase.     

Impact of international trade under dual labor markets

A country's unemployment rate can be affected by technology choice and the opening of international trade. This general equilibrium model examines the impact of international trade with the presence of dual labor markets in which manufacturing firms engage in oligopolistic competition and choose technologies with different marginal and fixed costs to maximize profits. In a closed economy, it is shown that an increase in labor market efficiency or a population increase induces manufacturing firms to adopt more advanced technologies and the wage rate in the manufacturing sector increases. With the existence of a continuum of technologies, technology choice is not a source of firm heterogeneity. The opening of international trade leads to an increase in the wage rate in the manufacturing sector and the price of the agricultural good. When countries are identical, international trade always increases national welfare.     

Resource abundance,market size,and the choice of technology

How resource abundance and market size affect the choice of increasing returns technologies is studied in an overlapping‐generations general equilibrium model in which manufacturing firms engage in oligopolistic competition. The model is surprisingly tractable. First, for the steady state, the wage rate, the level of technology, and capital stock are not affected by the amount of natural resources. An increase in the share of agricultural revenue going to natural resources leads to a lower wage rate and firms choose less advanced technologies. Second, an increase in market size increases the equilibrium wage rate, level of technology, and capital stock. Finally, other things equal, a country with a lower endowment of natural resources or a higher market size has a comparative advantage in producing the manufactured good.     

The Choice of Technology and Equilibrium Wage Rigidity

In this general equilibrium model, firms engage in oligopolistic competition and choose increasing returns technologies to maximize profits. Capital and labor are the two factors of production. The existence of efficiency wages leads to unemployment. The model is able to explain some interesting observations of the labor market. First, even though there is neither long-term labor contract nor costs of wage adjustment, wage rigidity is an equilibrium phenomenon: an increase in the exogenous job separation rate, the size of the population, the cost of exerting effort, and the probability that shirking is detected will not change the equilibrium wage rate. Second, the equilibrium wage rate increases with the level of capital stock. Third, a higher level of capital stock does not necessarily reduce the unemployment rate. That is, there is no monotonic relationship between capital accumulation and the unemployment rate.     

Imported technologies,urban unemployment and the North-South dialogue

This paper extends the Harris-Todaro model with intersectoral capital mobility to include sector specific imported technologies. Technologies are assumed to be embodied in imported capital goods. The small economy in the South, for which the model is defined, can import any amount of these technologies from the North at given royalty rates. We find that if the North agrees to reduce the royalty rate on the industrial technology, both the level and the rate of urban unemployment would rise and the income distribution change against the wage earners, whereas such a reduction for the agricultural technology would have just the opposite effects. A decrease in either royalty rate would increase the national income in the South, although the magnitude of the increase in income would be larger with reduced royalty rate for agricultural rather than industrial technology. The policy implication is that the South should emphasize the import of agricultural technology over the industrial technology.     

International Trade with Increasing Returns in the Transportation Sector

In this general equilibrium framework, the transportation sector is modeled as a distinct sector with increasing returns. A more advanced technology has a higher fixed cost but a lower marginal cost of production. Even with both manufacturing finns and transportation firms engaged in oligopolistic competition and optimally choosing their technologies, the model is tractable and results are derived analytically. Technology adoptions in the manufacturing sector and transportation sector are reinforcing, and multiple equilibria may exist. Firms choose more advanced technologies and the prices decrease when the size of the population is larger.     

Footloose Capital and Comparative Advantage

We investigate the effect of country size differentials and Ricardian technology differences on firms’ location decisions using a two‐country, two‐good (homogeneous agricultural good and differentiated manufacturing products), two‐factor (labour and footloose capital) simple new economic geography model. We found that manufacturing firms may agglomerate in a country where the manufacturing sector has a comparative disadvantage. In addition, when country size differentials and Ricardian technology differences exist between two countries, the key factor influencing firms’ location decisions changes according to the level of trade liberalization, from being market size‐dependent to becoming technology‐dependent.     

Laffer strikes again: Dynamic scoring of capital taxes

We set up a neoclassical growth model extended by a corporate sector, an investment and finance decision of firms, and a set of taxes on capital income. We provide analytical dynamic scoring of taxes on corporate income, dividends, capital gains, other private capital income, and depreciation allowances and identify the intricate ways through which capital taxation affects tax revenue in general equilibrium. We then calibrate the model for the US and explore quantitatively the revenue effects from capital taxation. We take adjustment dynamics after a tax change explicitly into account and compare with steady-state effects. We find, among other results, a self-financing degree of corporate tax cuts of about 70–90% and a very flat Laffer curve for all capital taxes as well as for tax depreciation allowances. Results are strongest for the tax on capital gains. The model predicts for the US that total tax revenue increases by about 0.3–1.2% after abolishment of the tax.     

中国产业结构升级 内生动力：需求还是供给

一国产业结构转型的内生动力包括需求和供给两个方面。本文构建了综合上述两类影响因素的产业结构转型模型。通过对模型的校准和模拟，本文发现需求方面的收入增长和供给方面的资本深化两个因素对我国结构转型的影响较大，而技术进步率差异的影响程度较小。因此，保持一定的投资速度，从而稳定增长，提高居民收入，深化资本劳动比是调整产业结构的重要力量。同时，为了在未来推动产业结构升级，需要进一步提高第一产业和第二产业的技术进步率。     

Wage Inequality,Increased Competition,and Trade Liberalization: Short Run vs Long Run

This paper examines the impact of increased competition and trade liberalization on skilled–unskilled wage inequality in the short run as well as the long run. It is shown that an increase in the number of firms in the producer services sector increases wage inequality in the short run even if the income shares of capital in the industrial and agricultural sectors were identical. A decrease in the services sector's fixed cost decreases wage inequality in the short run if the income share of capital in the agricultural sector is relatively large. Owing to the presence of external economies, a decrease in the services sector's fixed cost increases wage inequality in the long run. A decrease in import duty on the agricultural good increases wage inequality in the short as well as the long run but its effect in the long run is stronger due to the presence of external economies in the industrial sector.     

Interrelationship among foreign presence,domestic sales and export intensity in Chinese manufacturing industries

Using panel data on six Chinese manufacturing industries over the period 2005–2007, this article explores the interrelationship among foreign presence, domestic sales and export intensity of local firms. We find that the domestic sales and exports are complementary for local firms in China’s pharmaceutical industry, whereas in the case of the textile, transportation equipment, beverage, communication equipment and general equipment manufacturing industries, domestic sales and exports are substitutes. An increase in the average domestic sales increases foreign presence in all industries. The same applies to an increase in the average export intensity. An increase in the level of competition in China’s textile industry increases the export intensity as well as domestic sales of local textile firms. However, an increase in the level of competition in the pharmaceutical industry leads to a very large decrease in export intensity of local pharmaceutical firms. In the case of China’s transportation equipment manufacturing industry, an increase in the level of competition decreases domestic sales of local firms. Furthermore, an increase in the firm size increases domestic sales of Chinese firms in all six manufacturing industries.     

Trade liberalization,firm entry,and income inequality

This paper examines the short‐ and long‐run effects of trade liberalization via tariff reductions on income inequality in an economy, which is characterized by an imperfectly competitive urban manufacturing sector and a perfectly competitive rural agricultural sector. Tariff reductions reduce domestic output in the importable urban manufacturing sector, leading to shifts of capital from the urban sector to the rural agricultural sector. This can narrow the wage gap between skilled and unskilled labor in the short run. However, the lowered capital cost attracts new firms, and subsequently excessive entry of firms, to the urban manufacturing sector. This firm entry effect can mitigate the favorable effect of tariff reductions on wage inequality in the long run. Empirical study confirms the findings.     

Services,innovation and the new economy

Several distinctive stylized facts form the new economy, an information technology service sector organized in network forms of organization, an inflation rate below its fundamentals, an increase in stock market volatility, high rates of economic growth, but apart from a small information technology manufacturing sector low productivity rates. This paper presents a model where the innovation of new service varieties can explain all of these facts. First, productivity gains are no longer realized within but between firms, as the increase in variety increases value-added per employee. Whilst service innovators, such as the information technology manufacturers, get ever more productive, individual service firms will exhibit low productivity. It is this unmeasured sectoral productivity gain, which is the key element in understanding the intrinsic inertia in the price index. Finally, the paper shows that variety in the service sector enables service providers to realize rents, where fluctuations of these rents are the basis of more than proportional changes in the firms' stock market value.     

The Effects of Technology Changes on Sectoral Trade Patterns*

We develop a model in which sectoral trade patterns depend on both the technology common to all sectors and the technologies specific to each sector. Changes in the common technology level affect sectoral trade patterns through their impact on intertemporal optimization behavior, while changes in the sector‐specific technology levels affect sectoral trade patterns by influencing comparative advantage. The model shows: (1) unexpected increases in the common technology level worsen sectoral trade balances, but expected increases in the common technology level improve them; and (2) given other countries’ sectoral technology levels, an increase in a sector‐specific technology level relative to other sectors improves sectoral trade balances through its operation on comparative advantage. Using Japanese data, the empirical results reported in this paper support the model’s predictions.     

Human capital,employment protection and growth in Europe

Using data for a large sample of manufacturing and service sectors in 14 EU countries, this paper shows that the value added and TFP growth rate differential between high and low human capital intensive industries is greater in countries with low than countries with high levels of employment protection legislation. We also find that such negative effect of EPL is slightly stronger for countries near the technology frontier, in the manufacturing sector and after the 1990s. We interpret these results suggesting that technology adoption depends on the skill level of the workforce and on the capacity of firms to adjust employment as technology changes: therefore, firing costs have a stronger impact in sectors where technical change is more skill-biased and technology adoption more important.     

储蓄倾向差异、要素收入分配 和我国产业结构升级*

高储蓄率、要素收入分配不平等和产业结构升级是我国经济增长过程中三个典型事实。本文构建一个非平衡增长模型表明这三者是一个自洽的系统,存在相互制约和矫正关系。在我国劳动收入和资本收入的储蓄倾向不同与劳动收入占比较低的背景下,高储蓄会出现两个相反地影响产业结构的动力。一方面,高储蓄转化的高投资更多体现为工业品,阻碍了服务业发展,同时,高储蓄导致的低消费使得恩格尔效应无法发挥作用,阻碍了产业结构升级;另一方面,高储蓄导致高投资,推动了资本深化,这又促进了产业结构升级。产业结构变迁又反过来影响社会储蓄率和要素收入分配。文章证明这个系统存在一个广义平衡增长路径。     

Heterogeneity in Production Structures and Efficiency: An Analysis of the Czech Food Processing Industry

The present study analyses firm heterogeneity and sector‐specific technology. The theoretical model stands on the assumption of maximizing the return on capital and overcomes problems involved in simple profit maximization. The results show that a random parameter model with sector dummies and heteroscedasticity is the most appropriate model specification for distinguishing firm‐level and sector‐level efficiency and heterogeneity. The heterogeneity among firms as well as among sectors was found to be an important characteristic in Czech food processing. This holds for production technology as well as for technical efficiency. Moreover, the decomposition of total variance shows that intrasectoral differences in technologies are much more pronounced than the intersectoral differences. The differences in intrasector heterogeneity also suggest that the food processing industry will be subject to accelerated structural change in the coming years. Moreover, we found that on average the companies highly exploit their production possibilities. However, some companies cannot keep pace with competitors. Because leapfrogging does not appear to be present in selected industries (except for Milling), structural change is expected to occur in such a way that the most successful companies will strengthen their position.     

Heterogeneous productivity shocks,elasticity of substitution and aggregate fluctuations

We use a Dixit-Stiglitz setting to show that aggregate productivity fluctuations can be generated through changes in the dispersion of firms’ productivity. When the elasticity of substitution among goods is larger than one, an increase in the dispersion raises aggregate productivity because firms at the top of the distribution produce most of output. When the elasticity is smaller than one, an increase in the dispersion reduces aggregate productivity because firms at the bottom of the distribution use most of inputs. We use individual firm level data from Spanish manufacturing firms to test the relationship between the dispersion of firms’ productivity and aggregate productivity. The estimated coefficients are consistent with the predictions of the model: we find that an increase in the coefficient of variation of firms productivity of 1% increases aggregate productivity by 0.16% in sectors with an elasticity of substitution larger than one while the same increase in the standard deviation reduces aggregate productivity by 0.36% in sectors with an elasticity of substitution smaller than one.