Coalitional bargaining games with random proposers: Theory and application

We consider a non-cooperative coalitional bargaining game with random proposers in a general situation for which players differ in recognition probability and time preference. We characterize an efficient equilibrium as the generalized Nash bargaining solution that belongs to the core. The model is applied to wage bargaining between an employer and multiple workers. Although involuntary unemployment may occur in equilibrium, full employment emerges as players become sufficiently patient.     

Discovery,invention and serendipity

This paper attempts to relate serendipity, the natural ability to make interesting or valuable discoveries by accident （Longman Discovery of Contemporary English） with notable discoveries and inventions. It connotes the profound ability of finding out valuable things different from those who have been exploring by spending a lot of time or for years. The author will illustrate as many cases as possible within a given time constraint, so that surrounding environments and situations may be clarified, and such discoveries and inventions may be plausibly accomplished by accident or with rich reasons. These illustrations include historical as well as more recent cases. One of the cases is beyond the scope of our environment on the earth with preconceived notion, while other cases have given great impacts to our politics and also military intelligence. It should be noted that business and technological intelligence are deeply connected with discoveries, inventions and serendipity. In concluding remarks, the essence of serendipity will be summarized and how to side with the serendipity at the most important moment will be examined by viewing time series endeavors of the inventors and those who have devoted much time to discoveries.     

School Education,Learning‐by‐Doing,and Fertility in Economic Development

We examine the policy implications of relaxing constraints on the educational choice of individuals for economic development. Distinguishing human capital accumulation through schooling and through learning‐by‐doing and knowledge spillovers, we show that in the earlier stages of development, mitigating and eventually eliminating constraints on school education would be necessary for even further economic development. Expanded school education increases the income of individuals and encourages physical capital accumulation, which enlarges productive knowledge through implementation and operations. The increased labor productivity thus boosts economic growth. In the process, the fertility rate will decline because of the increased education cost per child.     

Who has benefited from the health services system for the elderly in Japan?

This paper examines the demand and supply of medical services for the elderly in the health services system characterized by per-month fixed copayment and selective capitation fee scheme for outpatients with chronic diseases. The results indicate that the beneficiary, in particular the household dependent, visits a physician more frequently because the actual copayment decreases for the household dependent, but is nearly the same for the head of the household. Physicians, however, provide more services to the beneficiary partly because of the lowered copayment and partly because of the capitation fee scheme, which they will select instead of the fee-for-service scheme only when capitation is more profitable than Fee-for-Service. As a result, physicians as well as the insured benefit from the health services system.     

Promotion systems and career development in Thailand: a case study of Siam Cement

This paper examines the promotion systems and career development of managers of Siam Cement Public Company Limited, the largest manufacturing conglomerate in Thailand. Since the 1980s, the company has grown into a full-blown conglomerate and is widely considered to be Thailand's most modernized corporation. In the aftermath of the 1997–8 Asian crisis, the meltdown forced the company and other debt-addicted business groups to streamline their debts and organization structures drastically. However, just five years later, the company had bounced back into profitability and first-class corporate governance, and stands firmly in the front rank. Undoubtedly, the company's successful recovery and its current strengths have been driven by the capability and dedication of its managers. This paper focuses on interviews with the company's personnel managers during 1999–2001, and on the personnel profiles of 128 managers (general manager level), in order to examine Siam Cement's human resource management policies and practices, and to draw from this its overall strategies for the development of managerial careers. The main finding was that well-planned recruitment, competitive promotion, concrete performance appraisal and wide-ranging training and development programmes, including job rotation and sending managers to study abroad, are all essential career development strategies.     

Equilibrium pricing of contingent claims in tradable permit markets

We advance a model of the tradable permit market and derive a pricing formula for contingent claims traded in the market in a general equilibrium framework. It is shown that prices of such contingent claims exhibit significantly different properties from those in the ordinary financial markets. In particular, if the social cost function kinks at some level of abatement, the forward price, as well as the spot price, can be subject to the so‐called price spike. However, this price‐spike phenomenon can be weakened if a system of banking and borrowing is properly introduced. © 2009 Wiley Periodicals, Inc. Jrl Fut Mark 30:559–589, 2010     

Ageing and public capital accumulation

We have examined the effects of ageing on the balanced-growth-maximizing public investment policy in an overlapping generations model with growth engines of public capital accumulation. Extended life expectancy tends to increase individual savings, while the increased old-age dependency requires more resources to be allocated to consumption in the economy. Declining working population makes for a severe trade-off between private and public capital accumulation. It is shown that as ageing proceeds, not only the income tax rate must be raised to accelerate public capital formation but the expenditure share of maintenance should be increased in order to maximize the balanced-growth rate.      

Dynamic Investment Strategies to Reaction–Diffusion Systems Based upon Stochastic Differential Utilities

We study the dynamic investment strategies in continuous-time settings based upon stochastic differential utilities of Duffie and Epstein (Econometrica 60:353–394, 1992). We assume that the asset prices follow interacting Itô-Poisson processes, which are known to be the so-called reaction–diffusion systems. Stochastic maximum principle for stochastic control problems described by some backward-stochastic differential equations that are driven by Poisson jump processes allows us to derive the optimal investment strategies as well as optimal consumption. We shall furthermore propose a numerical procedure for solving the associated nested quasi-linear partial differential equations.