Theoretical analysis of the government compensating industrial and public policies in the enlargement process of trade liberalization

本研究项目的目的是分析一国政府的贸易政策、产业政策和公共政策在贸易自由化过程中对该国资源配置、收入分配和社会福利的影响。在三年的研究期间，我们由四名成员组成的研究小组发表了超过25篇研究论文等。论文发表于《国际经济评论》、《经济学快报》、《国际经济学评论》、《发展经济学评论》等国际知名学术期刊。Masayuki Okawa分析了在寡头垄断的中间产品市场中关税和配额政策对企业行为和社会福利的影响，并得出了一些有趣的新结果。他还研究了不完全竞争条件下贸易自由化与经济援助的关系。研究表明，在某些情况下，援助国和受援国都可以从经济援助和贸易自由化中获益。Makoto Tawada分析了发展中国家的贸易和移民政策，并在来源国和东道国的收入分配和福利方面得出了新的有趣的结果。本文还对日本在寡头垄断的世界市场上的战略性贸易政策进行了研究，扩展了前人的一些模型，得到了一些新的结果。冈村诚（Makoto Okamura）和大川隆雄（Takao Ohkawa）研究了贸易自由化下的贸易政策和产业政策。他们分析了国际寡头垄断企业战略区位选择行为与东道国最优贸易政策之间的关系。在产业政策方面，他们成功地得出了一些优秀的新成果，这些成果将成为我们进一步研究的基础。

The purpose of this research project was to analyze the effects of trade policies, industrial policies and public policies of a government on the resource allocation, income distribution and social welfare of the country in the process of trade liberalization.In the three year research period, our research group that consists of four members has published more than 25 research papers and so on. The 16 papers were published from international refereed academic journals such as International Economic Review, Economics Letters, Review of International Economics, Review of Development Economics and so on.Masayuki Okawa has analyzed the effects of tariff and quota policies in the oligopolistic intermediate goods markets on the behavior of the firms and social welfare and derived some new interesting results. He also studied the relationship between trade liberalization and economic aid under imperfect competition. It was shown that under some circumstances both donor and recipient countries can be better off by the economic aid and trade liberalization.Makoto Tawada has analyzed the trade and immigration policies of developing countries and derived new interesting results on the income distribution and welfare of both source and host countries. These results might provide some useful policy implication on the Japanese policy for the foreign workers He also worked on the strategic trade policies in the oligopolistic world market, extended some models in the preceding papers and derived some new results.Makoto Okamura and Takao Ohkawa have investigated trade policies and industrial policies under trade liberalization. They have analyzed the relationship between the strategic location choice behavior of internationally oligopolistic firms and optimal trade policy of the host country. Concerning industrial policies they have succeeded deriving some excellent new results which will become the foundation of our further research.