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1.
Toshihiko Mukoyama 《The Japanese Economic Review》2019,70(1):30-50
This paper analyses a simple search‐and‐matching model with heterogeneous jobs. First, I derive an explicit formula that ensures the social efficiency of the equilibrium outcome. This formula generalises the well‐known Hosios condition and clarifies the role of externalities across labour markets for different types of jobs. Second, business cycle fluctuations with heterogeneous jobs are analysed. Heterogeneity in productivity and job stability plays an important role in generating strong labour‐market responses to productivity shocks. 相似文献
2.
Toshihiko Mukoyama 《Journal of Economic Growth》2004,9(4):451-479
This article presents a model of innovation and diffusion of machines which embody a new technology. Users of the machines are heterogenous in their skill level. Skilled machine-users adopt new machines first, while unskilled users wait until machines become more user-friendly and reliable. The improvement of machines is the engine of diffusion, and it is carried out by the monopolist machine producer. The speed of diffusion is affected by the skill distribution in the economy. At any point in time, the machine producer can innovate a new generation of machines. The timing of innovation is also influenced by the skill distribution. 相似文献
3.
This paper explores asset pricing in economies where there is no direct insurance against idiosyncratic risks but other assets can be used for self-insurance, subject to exogenously-imposed borrowing limits. We analyze an endowment economy, based on Huggett (1993) [11], both with and without aggregate risk. Our main innovation is that we obtain full analytical tractability by studying the case with “maximally tight” borrowing constraints. We illustrate by looking at riskless bonds, equity, and the term structure of interest rates, and we show that the model can reproduce many features of observed asset prices when idiosyncratic risks are quantitatively reasonable. 相似文献
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We estimate labor losses caused by spam mails and input these estimated values into a production function, while also estimating
damage to the Gross Domestic Product (GDP) in Japan. As a result, we have found that spam mails decreased the Japanese GDP
by about 500 billion yen in 2004. This marginal negative effect of spam mail to the GDP increased with the progress of broadband
in 2000. Moreover, from the result of a social simulation conducted by the authors, the amount of damage is projected to reach
1% of the Japanese GDP by 2010, unless adequate countermeasures are taken against spam mails. This projection provides a statistical
fundamental to several theoretical analyses of spam mails. 相似文献
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Compared with long-settled lava, transmigration areas in the outer islands of Indonesia are characterised by an underdeveloped transportation and communication infrastructure that makes farmers' access to markets relatively difficult. In this case study, however, no significant difference was found in either marketing margins or middleman profits between a transmigration area in Sumatra and a long-settled area m West Java. High risk and transaction costs, associated with long-distance trade under poor infrastructure, together with delays in the issue of formal land titles to transmigrant settlers, operate as entry barriers to marketing activities. These negative factors in the transmigation area are largely compensated for by the larger marketable agricultural surplus per farm, which has the effect of reducing transportation and transaction costs. 相似文献
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Toshihiko Kinoshita 《Bulletin of Indonesian Economic Studies》1986,22(1):34-56
The majority of Japanese investment in Indonesia is import-substitution orientated and located primarily in manufacturing. Declining Japanese investment in recent years is attributable partly to economic factors such as the drop in the price of oil and the higher cost of imports resulting from the devaluation of March 1983 But it is also due to Indonesian government policy. The author suggests a number of ways in which the Indonesian government could establish conditions more favourable to foreign investment. 相似文献
9.
Per Krusell Toshihiko Mukoyama Richard Rogerson Ayegül ahin 《Journal of Monetary Economics》2008,55(5):961-979
We study the impact of tax and transfer programs on steady-state allocations in a model with search frictions, an operative labor supply margin, and incomplete markets. In a benchmark model that has indivisible labor and incomplete markets but no trading frictions we show that the aggregate effects of taxes are identical to those in the economy with employment lotteries, though individual employment and asset dynamics can be different. The effect of frictions on the response of aggregate hours to a permanent tax change is highly nonlinear. There is considerable scope for substitution between “voluntary” and “frictional” nonemployment in some situations. 相似文献
10.
There has been a substantial increase in the average duration of unemployment relative to the unemployment rate in the U.S. over the last 30 years. We evaluate the performance of a standard job-search model in explaining this phenomenon. In particular, we examine whether the increase in within-group wage inequality and the decline in the incidence of unemployment can account for the increase in unemployment duration. The results indicate that these two changes can explain a significant part of the increase over the last 30 years, although the model fails to match the behavior of unemployment duration during 1980s. 相似文献