We present a new model of dynamic Bertrand competition, where a quota is treated as an intertemporal constraint rather than as a capacity constraint as is common in the literature. The firm under a quota then can still vary the rates of exports over time provided that its total sales within the...

Due to its simplicity the plurality voting system is frequently used to choose a common representative or project. Nevertheless it may fail to provide a socially efficient decision as a majority can outvote any minority even if the majority's gain does not compensate the loss suffered by the...

This paper studies the impact of long-run productivity growth on job finding and separation rates, and thus the unemployment rate, using a search and matching model. We incorporate disembodied technological progress and on-the-job search into the endogenous job separation model of Mortensen and...

We consider the election model in which voters choose a subset from the set of candidates. Both voters and candidates are assumed to possess preferences with separable strict orderings. We investigate a rule satisfying candidate stability, which is the requirement to deter any candidate from...

This paper documents the prevalence, duration, and marital outcomes of cohabiting unions in Japan. It then examines the correlates of cohabitation experiences and describes differences in the family formation trajectories of women who have and have not cohabited. Cohabitation has increased...

The leading economic explanation for tipping -that is, explanation why the practice is socially beneficial, not why individuals leave tips even though it is not narrowly advantageous to them- is that it confers an incentive to provide personal services. This fits many instances in which tipping...

This study augments a second-generation Schumpeterian growth model to employ human capital explicitly. We clarify the general-equilibrium interactions of subsidy policies to R&D and human capital accumulation in a unified framework. Despite a standard intuition that subsidizing these...

We consider the problem of fairly allocating one indivisible object when monetary transfers are possible, and examine the existence of Bayesian incentive compatible mechanisms to solve the problem. We propose a mechanism that satisfies envy-freeness, budget balancedness, and Bayesian incentive...

We examine whether cooperation in R&D leads to product market collusion. Suppose that firms engage in a stochastic R&D race while maintaining the collusive equilibrium in a repeated-game framework. Innovation under competitive R&D creates inter-firm asymmetries, which destabilizes the collusive...

Using a simple product differentiation model with elastic demands, we investigate the relationship between differentiation strategies and vertical relations. Depending on the competitive structure in the upstream market, three differentiation patterns (maximum, minimum and partial...