An adjustment cost model of long-term employment in Japan

A dynamic factor demand model is presented which pays special attention to the prevalence of a long-term employment relationship in Japan. The model is based on the representation of technology by a variable cost function with adjustment costs for employment and capital stock, where the variable cost consists of the sum of overtime costs and materials costs. With employment being quasi-fixed and scheduled hours institutionally regulated, short-run adjustments are mostly made by overtime hours. Application to a time-series data on the Japanese electrical machinery industry indicates quasi-fixity of capital and employment and reproduces short-run overshooting of overtime hours to compensate for the sluggish adjustment of employment.     

Endogenous Market Structures in the Presence of a Socially Responsible Firm

We consider the endogenous selection of strategic contracts in an asymmetric duopoly with substitutable goods. the duopoly comprises a typical managerial firm with a sales delegation and a socially responsible firm (CSR firm) with a linear combination of social welfare and quantity as its managerial delegation contract. In particular, we examine how the equilibrium market structure changes from the case wthere both firms adopt sales delegation contracts to the case wthere one of the firms becomes a CSR firm, after the owners of the firms select their strategic contracts. We show that two market structures that are asymmetric with respect to their strategic contracts can become equilibrium market structures under the pure strategic contract class. Furthermore, we consider a unique mixed strategy equilibrium to examine how the risk domination between the two asymmetric equilibrium market structures affects equilibrium selection. there, we find that the competition wthere the firm with the sales delegation and the CSR firm have a price contract and a quantity contract, respectively, risk-dominates the competition wthere the firms have a quantity contract and a price contract, respectively. Finally, by deriving the order of social welfare among the four subgames, we show that the social incentive does not coincide with the private incentive in the robust equilibrium with respect to risk domination in the endogenous selection game of the strategic contracts of the asymmetric duopoly with the firm with a sales delegation and the CSR firm.     

Electricity saving behavior of households by making efforts,replacing appliances,and renovations: empirical analysis using a multivariate ordered probit model

This study empirically explores the determinants of household electricity saving behavior based on a sample of Japanese households. Our study makes four contributions. First, we examine the short‐term saving action of making efforts, the medium‐term saving action of replacing appliances, and the long‐term saving action of undertaking renovations. Second, we consider not only the physical characteristics of households but also behavioral characteristics, such as their understanding of the importance of energy saving and willingness to save energy. Third, in our analysis, we assume that appliances and housing facilities have the electricity‐saving capability and service‐providing capability. While previous studies focus on the former, consumers in reality consider both capabilities. Fourth, we consider the optimization by households and include broad types of appliances and renovations. Using a multivariate ordered probit model with data on 518 Japanese households in 2012, we obtain the following results. First, in addition to the demand response, the effort level is determined by behavioral, rather than by physical characteristics. Second, the motivation behind appliance replacement is durability, rather than electricity‐saving and service‐providing capabilities. Third, appliance replacement is enhanced by an understanding of the importance of energy saving, rather than by the willingness to save energy. Households can replace appliances because of social pressure, even if they are not so concerned about saving energy. Fourth, households are willing to renovate housing facilities even though they pay a higher cost for the greater saving capability rather than for the service‐providing capability. However, such renovation is not influenced by internal incentives, but by physical aspects of the house, such as size, age, and type.     

Transactions Accounts and Loan Monitoring

We show that transactions accounts, by providing ongoing dataon borrowers’ activities, help financial intermediariesmonitor borrowers. This information is most readily availableto commercial banks, which offer these accounts and lendingtogether. We find that (1) monthly changes in accounts receivableare reflected in transactions accounts; (2) borrowings in excessof collateral predict credit downgrades and loan write-downs;and (3) the lender intensifies monitoring in response. Thisis evidence on a key issue in financial intermediation—thereis an advantage to providing deposit-taking and lending jointly.But this advantage may have fallen as the cost of communicationhas declined. (JEL G10, G20, G21)     

TECHNICAL PROGRAESS AND INVESTMENT: A VINTAGE MODEL*

The main purpose of this paper is to investigate the optimal investment decision of the firm with a vintage production function. First, the optimal conditions for the investment and replacement permitting jumps in the state variables are derived. Second the effects of exogenous parameters on investment are examined and the following new results are obtained: (1) whether a rise in the current money wage increases or decreases investment depends crucially on the time profile of the existing plants; (2) a rise in the rate of technical progress reduces investment.     

On the impact of the tests for serial correlation upon the test of significance for the regression coefficient

Monte Carlo methods are used to investigate the relationship between the power of different pretests for autocorrelation, and the Type I error and power of the significance test for a resulting two-stage estimate of the slope parameter in a simple regression. Our results suggest it may be preferable to always transform without pretesting. Moreover we find little room for improvement in the Type I errors and power of two-stage estimators using existing pretests for autocorrelation, compared with the results obtained given perfect knowledge about when to transform (i.e., given a perfect pretest). Rather, researchers should seek better estimators of the transformation parameter itself.     

Approaches to solving China’s marine plastic pollution and CO2 emission problems

Global contamination of the oceans by waste plastics is of increasing concern. Besides being the largest emitter of CO₂ in the world, China is suspected of being the largest contributor to marine plastic waste pollution. Responsible for the latter is the still inadequate management of waste in China, a significant improvement of which is necessary for addressing the issue of marine plastic pollution. Since plastics are hydrocarbons, submitting them to appropriate waste treatment/recycling technologies could contribute to mitigating the emission of CO₂, indicating the possibility of addressing the two environmental issues simultaneously. Based on the combined use of waste input–output and linear programming, we investigated options for mitigating CO₂ emissions under consideration of alternative waste treatment/recycling processes applied to waste plastics of China. It was found that of the nine processes considered, four could result in a net reduction in the emission: a win-win situation.