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排序方式: 共有158条查询结果,搜索用时 15 毫秒
1.
We first consider a closed model, where households' time discount depends on externality in consumption. We can prove that there is a unique steady state, which is a saddle point. Then we extend the model to a two‐country world, and derive the condition on the effects of consumption externality under which there is a unique free trade steady state with saddle‐point stability. 相似文献
2.
This study analyzes marginal social and private returns of R&D investment through the impact of international spillovers of R&D stocks. We compare the marginal social with marginal private returns using data of 27 OECD and EU countries from 1995 to 2008. We consider two channels of R&D spillovers: embodied in trade flows and disembodied by bilateral technological proximity. We find that marginal social returns on R&D are much larger than the marginal private returns for R&D‐intensive countries, in the embodied spillover channel. We also find that the embodied spillover channel through import flows is more important than the disembodied channel. 相似文献
3.
Yoko Nishihara Wataru Sunayama Kazunori Nishimura 《The Review of Socionetwork Strategies》2014,8(1):35-49
Bulletin Board Systems (BBSs) on the Web are used by many users posting comments on threads. Each thread carries a subject of discussion. Most users post comments related to a subject. However, unrelated comments are also posted. The unrelated comments distract users and diminish their understanding of the entire story of a thread. Comments unrelated to a subject have to be filtered automatically. This paper proposes a method that extracts comments related to a thread subject from a thread of BBS. The method extracts two types of comments: comments related to a thread subject (main comments), and comments related to main comments (sub-comments). The main comments are extracted by a user ID and keywords in the comments. The sub-comments are extracted by explicit and implicit anchor texts in the comments. We experimented with the proposed method and verified that comments extracted by the proposed method support participants in understanding the entire story of a thread. 相似文献
4.
We examine the properties of a two-country dynamic Heckscher–Ohlin model that allows for preferences to be non-homothetic.
We show that the model has a continuum of steady state equilibria under free trade, with the initial conditions determining
which equilibrium will be attained. We establish conditions under which a static Heckscher–Ohlin theorem will hold in the
steady state, and also conditions for a dynamic Heckscher–Ohlin theorem to hold. If both goods are normal, each country will
have a unique autarkic steady state, and all steady state equilibria are saddle points. We also consider the case in which
one good is inferior, and show that this can lead to multiple autarkic steady states, violations of the static Heckscher–Ohlin
theorem in the steady state. Furthermore, there may exist steady state equilibria that Pareto dominate other steady states.
These steady states will be unstable if discount factors are the same in each country, although they may exhibit dynamic indeterminacy
if discount factors differ. 相似文献
5.
Chihiro Shimizu Kiyohiko G. Nishimura Tsutomu Watanabe 《Journal of the Japanese and International Economies》2010,24(2):282-299
Why was the Japanese consumer price index for rents so stable even during the period of the housing bubble in the 1980s? To address this question, we use a unique micro price dataset which we have compiled from individual listings (or transactions) in a widely circulated real estate advertisement magazine. This dataset contains more than 700,000 listings of housing rents over the last 20 years. We start from the analysis of microeconomic rigidity and then investigate its implications for aggregate price dynamics, closely following the empirical strategy proposed by Caballero (Caballero and Engel, 2007). We find that 90% of the units in our dataset had no change in rents per year, indicating that rent stickiness is three times as high as in the United States. We also find that the probability of rent adjustment depends little on the deviation of the actual rent from its target level, suggesting that rent adjustments are not state-dependent but time-dependent. These two results indicate that both the intensive and extensive margins of rent adjustments are small, resulting in a slow response of the CPI for rent to aggregate shocks. We show that the CPI inflation rate would have been higher by 1% point during the bubble period, and lower by more than 1% point during the period following the burst of the bubble, if Japanese housing rents were as flexible as those in the United States. 相似文献
6.
We estimate the welfare gain from innovations in the LCD TVs that prevailed during the period 2005–2007 in Japan, via consumer surplus that we measure with the aid of discrete choice methods, using market data obtained from an internet price comparison service (Kakaku.com). Further, by the measured implicit values of attributes, we evaluate in monetary terms, the qualitative transition embedded in the attributes through the iso-consumer surplus planes. We thereby disaggregate the welfare gain into the qualitative and the budgetary components, which we call the quality gain, and the budget gain, respectively. The estimates show, along with the evolved process of innovation, that the quality gain was in the order of 381 KJPY, while the budget gain was 94 KJPY negative, which gives about 287 KJPY of overall welfare gain per consumer, during the period. 相似文献
7.
Etsuko Nishimura Akio Imai Gerrit K. Janssens Stratos Papadimitriou 《Transportation Research Part E: Logistics and Transportation Review》2009,45(5):771-786
This study addresses the storage arrangement of transshipment containers on a container yard, in order to carry out efficiently the ship handling operations at a terminal where mega-containerships call. An optimization model is specified to investigate the flow of containers from the mega-containership to feeder ships using intermediate storage at the yard. A heuristic based on the lagrangian relaxation is formulated. The quality of the heuristic approach is tested in a number of experiments. In the experiments, various situations are analyzed with respect to mega-containership arrival rates, some strategies for stack arrangements and terminal layouts. 相似文献
8.
Kazuo Nishimura Alain Venditti Makoto Yano 《International Journal of Economic Theory》2010,6(1):97-125
This paper investigates the interlinkage in the business cycles based on expectation-driven fluctuations of large-country economies in a free-trade equilibrium. We consider a two-country, two-good, two-factor general equilibrium model with sector-specific externalities. We show that some country's expectation-driven fluctuations can spread throughout the world once trade opens even if the other country has determinacy under autarky. We thus prove that under free trade, globalization and market integration can have destabilizing effects on a country's competitive equilibrium. Finally, we characterize a configuration in which opening to international trade improves the stationary welfare at the world level but deteriorates the stationary welfare of the country that imports investment goods and exports consumption goods. We conclude that in opposition to the standard belief, international trade might not be beneficial to all trading partners in the long run. 相似文献
9.
This article provides necessary conditions for the admissibility of matrix linear estimators of an estimable parameter matrix linear function under two kinds of quadratic matrix loss functions in a multivariate linear model following a family of matrix normal distributions, where the covariance matrix associated is completely unknown. Further it is demonstrated that if a more concrete condition supplied for one of the subdivided conditions is satisfied, then the special condition concerning the Stein problem is necessary for the admissibility of the kind of estimators under each of the loss functions. 相似文献
10.
To explicitly explain the cost-reducing effects of technical progress experienced by each firm, we assume that technical progress,
namely, the prevalence of particular equipment, can be expressed by a function of logarithmic physical capital. Regarding
the technology cost structure, we propose a modified dynamic cost function model that consists of the above equation, the
translog variable cost equation containing technical progress as one of the factors, and Euler equations with respect to physical
and research and development capital stocks. Using data on eight firms in the Japanese electric-furnace steel industry for
the period 1970–1998, the model was empirically validated using the generalized method of moments. An elasticity of production
cost with respect to technical progress showed a cost-reducing effect. This fact was influenced by the type of product and
the extent of each firm’s R&D. Also derived from this model is one reasonable phenomenon of business-cyclically changing the
use of endogenous capacity. This economic information supports the appropriateness of the above model, including the assumption
of transforming technical progress into an endogenous variable, and the methods of analysis. 相似文献