Measuring economic localization: Evidence from Japanese firm-level data

This paper examines location patterns of Japan’s manufacturing industries using a unique firm-level dataset on the geographic location of firms. Following the point-pattern approach proposed by Duranton and Overman (2005), we find the following. First, about half of Japan’s manufacturing industries can be classified as localized and the number of localized industries is largest for a distance level of 40 km or less. Second, several industries in the textile mill products sector are among the most localized, which is similar to findings for the UK, suggesting that there exist common factors across countries determining the concentration of industrial activities. Third, the distribution of distances between entrant (exiting) firms and remaining firms is, in most industries, not significantly different from a random distribution. These results suggest that most industries in Japan neither become more localized nor more dispersed over time and are in line with similar findings by Duranton and Overman (2008) for the UK. Fourth, a comparison with the service sector indicates that the share of localized industries is higher in manufacturing than in services, although the extent of localization among the most localized manufacturing industries is smaller than that among the most localized service industries, including financial service industries.     

The natural yield curve: its concept and measurement

This paper illustrates the concept of the natural yield curve and how to measure it. The natural yield curve extends the idea of the natural rate of interest defined at a single maturity to one defined for all maturities. If the actual real yield curve matches the natural yield curve, the output gap will converge to zero. An empirical analysis using data for Japan shows that past monetary easing programs expanded the gap between the actual real yield curve and the natural yield curve mainly for short and medium maturities and led to accommodative financial conditions. By contrast, the quantitative and qualitative monetary easing policy has expanded the gap for long maturities as well as short and medium maturities. The natural yield curve is expected to provide a useful benchmark in the conduct of both conventional monetary policy and unconventional monetary policy aiming to influence the entire yield curve.     

A business cycle model with variable capacity utilization and demand disturbances

We develop a dynamic general-equilibrium model with demand (preference) shocks, estimated using Hall's (J. Labour Economics 15 (1997) 223) residual, that replicates U.S. business cycles well, at least compared to the real business cycle models. The key factor is cyclical capital utilization, which is based on imperfect competition, slow adjustments in capital stock, and fixed requirement of labor input. We also demonstrate theoretically that a representative-agent economy with preference shocks could be viewed as the reduced form of a heterogeneous-agents economy with incomplete markets. Specifically, a heterogeneous-agents economy with incomplete markets is aggregated into a representative-agent economy with preference shocks. This result would provide a microeconomic foundation for preference shock models. It is also shown that a shock to marginal utility of consumption and a shock to marginal disutility of labor have different effects.     

Commodity Spread Option with Cointegration

We derive the valuation formula of a European call option on the spread of two cointegrated commodity futures prices, based on the Gibson–Schwartz with cointegration (GSC) model. We also analyze the American commodity spread option including the early exercise premium representation and an analytical approximation valuation formulae with cointegration. In the numerical analysis, we compare the spread option values calculated by the GSC model and the Gibson–Schwartz (GS) model that ignores cointegration. Consistent with the intuition that the cointegration prevents the prices from diverging, the GSC model prices the commodity spread option lower than the GS model which have longer maturity of more than 6 years. In other words, the GS model may overprice the commodity spread options for those with longer maturity without taking account of cointegration. Thus, incorporating cointegration is important for valuation and hedging of long-term commodity spread options such as large scale oil refining plant developments.     

Technical change in a bubble economy: Japanese manufacturing firms in the 1990s

An important economic policy issue is to ascertain when and if technical change (TC) is driving measured growth in productivity. Was this the case for Japan during the late 1980s when a massive financial bubble was being formed? This paper addresses this question, after first further developing methods needed for this purpose. The movement of firms’ TC is of particular policy interest to Japan whose economy has been suffering from a prolonged recession for more than a decade since the burst of the bubble in 1990. In the period of time immediately prior to the burst of the bubble, our estimation results show a significant drop in technical progress. What we believe these results reflect is that Japanese manufacturing firms made excessive investments in production inputs in the years when the bubble was being formed. This excessive investment in inputs did not contribute positively to TC and hence the measured productivity and economic growth of the bubble period in the late 1980s was unsustainable.     

HARROD'S KNIFE-EDGE AND CONSUMPTION FUNCTIONS

This paper reconsiders Harrod's knife-edge instability of the capitalist economy. An investment function of the type used by Harrod is combined with a consumption function of the relative income hypothesis type. It will be shown that, even under such an investment function, knife-edge instability can be ruled out if a part of consumption behaves steadily and capitalists do not change their expectations very rapidly.     

The expanding Empire and spatial distribution of economic activity: the case of Japan's colonization of Korea during the prewar period

In 1910, Japan annexed Korea and integrated it into the Empire of Japan. According to its policy of assimilating colonies, the Japanese government intended to remove the tariffs between Japan and Korea, an aim which had almost been realized by 1923. The removal of the tariff barrier was supposed to improve market access between Japan and Korea. This article explores the implications of this event, focusing on the spatial distribution of economic activity in Japan. The regression results suggest that the integration of the Korean market increased population growth rates more in the regions close to the former border between Japan and Korea than in the other regions. Furthermore, after integration, the regions close to Korea that specialized in the fabric industry, whose products were the primary goods exported from Japan to Korea, experienced more population growth than other regions close to Korea did. These results suggest that market accessibility was indeed a determinant of the spatial distribution of economic activity. Our findings also indicate that the economic effect of colonization on the mainland was spatially heterogeneous and that a spatial viewpoint of the history of imperialism is important.     

On the “merger paradox” in price competition with asymmetric product differentiation

By assuming asymmetric product differentiation, we consider the “merger paradox” in price competition (or the incentive to collude in prices). We investigate whether the emergence of the merger paradox depends on the degree of product differentiation between firms. In particular, unlike Deneckere and Davidson (1985), we demonstrate that if the degree of product differentiation between the insider and outsider is sufficiently small, then they are strategic substitutes, and thus, the merger paradox arises in price competition.     

Homesickness and repeated migration

This paper presents a dynamic structural model of migration that is designed to help explain the migration behaviour of undocumented Mexican immigrants in the US. Its key feature – which I call ‘homesickness’ – is a duration-dependent disutility from living abroad that keeps increasing while a migrant stays abroad and can be reset to zero only by returning to their home country. I estimate the model using data primarily from the Mexican Migration Project Survey and find that the model is capable of explaining, among other things, the fact that: (i) a non-negligible number of Mexican immigrants in the US return home after earning very little; (ii) these ‘unsuccessful’ immigrants are more likely to re-enter the US at a later date; and (iii) such ‘unsuccessful’ returns are more prevalent among immigrants who left their wives behind in Mexico. These facts are not easily reconciled with existing models of migration that do not feature homesickness.     

Unemployment and indeterminacy

Using an efficiency-wage model, we examine the relationship between indeterminacy and unemployment insurance. It is shown that the less unemployment insurance is, the more likely equilibrium is to be indeterminate. Equilibrium can be indeterminate even without externalities or increasing returns, which makes a sharp contrast to the recent literature on indeterminacy. Our result is based on the fact that the no-shirking condition with marginal utility of wealth kept constant is downward sloping when income insurance is not perfect.