Development of air pollutant emission factors under real-world truck driving cycle

The truck driving cycle was developed in Thailand using actual speed-time profile from trucks in suburban area. Driving data were separated into micro trips and the representative driving cycle was selected by matching micro trips statistics and target statistics. The Performance Value (PV) was considered for selecting the representative driving cycle. This selected driving cycle was then used as input data for estimating emission factors of 4 air pollutants and 3 greenhouse gases by the International Vehicle Emission (IVE) model. Results were then compared with emission factors developed using the European Transient Cycle (ETC). Additionally, a comparison was made between emission factors calculated in this study and direct measurements of emissions from truck driven on chassis dynamometer under the European driving cycle. Comparison results revealed that CO, NO_x and CO₂ emission factor were about 2.05, 2.24 and 1.78 times lower than those obtained from direct measurements. PM emission factor was about 0.89 times higher than measured data. This study confirms the need to considered actual fleets and characteristics of vehicular sources when calculating their emission rates for further use in development of emission inventory.     

A new scheme for static hedging of European derivatives under stochastic volatility models

This study proposes a new scheme for static hedging of European path‐independent derivatives under stochastic volatility models. First, we show that pricing European path‐independent derivatives under stochastic volatility models is transformed to pricing those under one‐factor local volatility models. Next, applying an efficient static replication method for one‐dimensional price processes developed by Takahashi and Yamazaki (2008), we present a static hedging scheme for European path‐independent derivatives. Finally, a numerical example comparing our method with a dynamic hedging method under Heston's (1993) stochastic volatility model is used to demonstrate that our hedging scheme is effective in practice. © 2009 Wiley Periodicals, Inc. Jrl Fut Mark 29:397–413, 2009     

Policy reform and optimal inflation rate for Japan in computable OLG economy

We build a computable OLG model with monetary growth to calculate the optimal level of inflation rate for Japan, and to study policy reforms make any quantitative impacts on it. Four main results were obtained: (i) the optimal inflation rate for Japan is calculated around 1.0%; (ii) the calculated underlying inflation rate is about 9% under the present Japanese economic and fiscal situation; (iii) to prevent high inflation, fiscal reconstruction needs to be implemented; and (iv) if fundamental fiscal reform is conducted, the optimal inflation rate might be achieved. These results are very robust to calibration.     

Taxation in an Overlapping Generations Model with Human Capital

We examine the impact of flat-rate taxes on intergenerational equity in an overlapping generations model of a small open economy, assuming the intergenerational externality of human capital accumulation. The externality may cause the difference between the growth rates in private human capital and in average human capital of the economy. If the externality is sufficiently small, the introduction of an interest income tax will benefit all future generations. In contrast, if it is sufficiently great, the introduction of a wage tax could harm all generations by raising financial asset holdings and thereby reducing consumption.     

An optimal monetary policy in an aggregate neoclassical model of economic growth

This paper shows that the usual Ramsey-Cass-Koopmans optimal-growth theory is applicable to decentralized monetary economies and illustrates, with a simple model, how optimal growth can be achieved via a simple monetary policy. Securities and the endogeneity aspect of the money supply are explicitly introduced. This paper shows that the steady state under optimal growth is a saddle point, that the dynamic behavior of the capital-labor ratio and real per capita consumption is identical to that found in the usual literature in which money is not introduced, and that the optimal monetary policy is “counter-cyclical.”     

Perceptions of products made in Japan versus those made in the United States among Japanese and American executives: A longitudinal perspective

This research reports on a longitudinal survey approach in which American and Japanese executives were queried regarding their perceptions of products made in the United States and Japan over a period of 15 years. Three surveys were conducted by mail in the United States using home country executives in 1977, 1991 and 1992. One survey was conducted in Japan in 1992 using Japanese executives and is compared to the findings of Nagashima (1977). Results show that over the past 15 years, the image of American goods has been declining both in the United States and Japan, whereas that of Japanese goods has been improving. These results offer an alternative product image/attribute-based perspective as an explanation of the United States trade deficit with Japan. Over the past year, survey results also reveal that the image of Japanese goods in the United States has suffered. This finding suggests that the image of a country's products is changeable, surprisingly even in a short period of time.     

日本:形势走低但不会长久

由于全球经济自2004年开始保持强劲增长,2005年日本PC机和手机市场形势要好于预期。由于日本出口业务很多,因此全球经济对日本经济影响很大。2006年,据东京的研究机构Digital Ga- rage预计,日本经济会出现不景气。这同时也反映出以下几点:原油价格上涨之后亚洲经济的总体情况、PC机在发达国     

The theory of tariffs in a monetary economy

A two country two commodity model of international trade in a monetary context is utilized for the re-evaluation of the classical propositions in international trade theory which are usually derived under barter. A comparison of results under alternative exchange rate regimes is given. The effects of tariffs on the balance of payments and on domestic price levels is also studied.