要旨：This paper presents analyses of how the externality of environmental damage affects the equilibrium properties of a simple overlapping generations model with multiple regions. Simulation results show that the government's environmental policy decreases capital accumulation. When the government imposes an environmental tax on the urban sector, such a policy decreases the urban population ratio to the rural but increases the total fertility rate.

要旨：This study considers a small parametric uncertainty of migration cost in a rational expectation two region model with increasing returns to scale and migration cost of each period increases in number of migrants. When the stochastic parameter follows a Brownian motion in continuous time with minute variance, imitative equilibrium belief in which behavior of the stochastic model approximately coincides the deterministic model, is uniquely determined dependent on given state variables; then indeterminacy of equilibria of deterministic model diminishes. However, this result critically depends on the assumption of Brownian motion and it does not hold when we suppose different stochastic process without either of two important characteristics of Brownian motion: infinite length of sample path and continuity.

【応用ミクロ経済学ワークショップと共催】

【応用ミクロ経済学ワークショップと共催】

要旨：Typical analyses of industrial agglomeration start with some aggregate measure of “agglomeration degree” for each industry, and attempt to explain differences in these values across industries by regressing them on sets of industrial attributes. But this aggregation makes it difficult to capture the spatial aspects of individual agglomerations. In the present paper, we develop a more explicit spatial approach to identifying agglomeration determinants by means of a two-stage analysis. First, we detect individual spatial clusters of each industry on a map. We then attempt to explain differences in these cluster patterns between industries by employing an appropriate regression framework. Here, cluster employment sizes are regressed on selected regional attributes for each industry-cluster pair, and significant differences between industries are captured in terms of industry-level interactions with these attributes. This modeling approach is then applied to the three-digit manufacturing industries in Japan.

【大阪大学経済学研究会と共催】