On the application of the Minkowski-Farkas theorem to sampling designs

In the paper, we consider the following problem: Let {π_k} be a sequence satisfying 0π_kΣ1 (k=1,…, N) and π=n.Tben, is there an unordered sampling design such that, for each k=1,…N, the inclusion probability of unit k is equal to π? It is shown that it can be solved by the straightforward application of the Minkowski-Farkas theorem.     

GREEKS FORMULAS FOR AN ASSET PRICE MODEL WITH GAMMA PROCESSES

Greeks formulas of Delta, Rho, Vega, and Gamma are derived in closed form for asset price dynamics described by gamma processes and Brownian motions time‐changed by a gamma process. The model considered here includes many well‐known models of practical interest, such as the variance gamma model and the Black–Scholes model. Our approach is based upon the Malliavin calculus for jump processes by making full use of a scaling property of gamma processes with respect to the Girsanov transform. The existence of their variance is investigated. Numerical results are provided to illustrate that the derived Greeks formulas have faster rate of convergence relative to the finite difference method.     

Non-parametric test of time consistency: Present bias and future bias

This paper reports the elicited time preference of human subjects in a laboratory setting. The model allows for non-linear utility functions, non-separability between delay and reward, and time inconsistency including future bias in addition to present bias. In particular, the experiment (1) runs a non-parametric test of time consistency and (2) estimates the form of time discount function independently of instantaneous utility functions, and then (3) the result suggests that many subjects exhibiting future bias, indicating an inverse S-curve time discount function.     

Effects of the Reform of the Social Medical Insurance System in Japan

We estimate outpatient medical care demand functions and examine the effects of the 1997 reform of the medical insurance system. We focus on the issue of which persons have been most affected by the reform and on the extent to which price elasticities have changed since the reform. The estimation results show that the reform affected mainly dependants' demand for medical care, which implies that all members of the household shared the increase in the medical costs of the head of the household. Price elasticities ranged from −0.18 to −0.26 before the reform, and from −0.08 to −0.11 after the reform.
JEL Classification Numbers: C35, I10, I18.     

Evaluating Unit-Based Pricing of Residential Solid Waste: A Panel Data Analysis

Municipalities introduced unit-based pricing (UBP) with the aim of achieving a decrease in household waste generation and for the replacement of unsorted waste with recycling. Although many studies have shown that UBP has a short-run effect on recycling, few works have tackled the long-run effect on waste generation and recycling. By using panel data for 665 Japanese cities over 8 years, we examine the long-run effect of UBP on waste generation and recycling. The estimation results in waste generation suggest that there is a rebound effect, though a small one. We confirm that the effect of UBP on recycling sustains for the long run. We also find that the short- and long-run responses to an economic incentive for recycling activities differ with income groups. Recycling among the high-income group has not been promoted by implementation of UBP, but people in that group are willing to participate in recycling without an economic incentive. In contrast, recycling activity within the low-income group is strongly motivated by UBP for many years.     

Correction to: Pointwise agglomeration in continuous racetrack model

Portuguese Economic Journal - Using analytical methods they devised, the authors intend to study economic aspects of the racetrack economy described as a continuous-space version of the new...     

Health and Public Health Implications of COVID-19 in Asian Countries

This paper discusses the impacts of the COVID-19 pandemic on population health in Asian countries. Compared to European countries, Asian countries, in general, experienced much fewer COVID-19 cases and deaths. The underlying factors in this difference would include the earlier and more stringent nonpharmaceutical interventions, differences in the age structure, the geographical characteristics in Asia, and the experience of past outbreaks of emerging diseases, though further studies are needed to investigate the exact mechanisms. Still, regarding the aim of developing resilient health care systems, there remain several lessons from the COVID-19 pandemic experience in Asian countries that could inform more effective management of future pandemics.