Developing countries have increased sanitation investment to reduce diarrheal diseases. However, the direct health benefits of latrine construction can be offset by water pollution externalities due to poor treatment of fecal sludge. I estimate these negative externalities of a sanitation policy...

This paper provides numerical examinations on sustainability of genuine saving (GS) using theWorld Bank database. Unlikely to previous criteria of sustainability, we consider future sustainability by focusing on evolution of GS. In this case even if the historical average GS of a country is...

Developing countries have increased sanitation investment to reduce diarrheal diseases. However, the direct health benefits of latrine construction can be offset by water pollution externalities due to poor treatment of fecal sludge. I estimate these negative externalities of a sanitation policy...

This paper presents a numerical examination of sustainability from the perspective of quot;Genuine Savings,quot; using a data set provided by the World Bank. Unlike previously-used criteria of sustainability that focuses on observed paths of genuine savings rates, we consider future...

We investigate a Cournot model with strategic R&D investments wherein efficient low-cost firms compete against less efficient high-cost firms. We find that an increase in the number of high-cost firms can stimulate R&D by the low-cost firms, while it always reduces R&D by the high-cost firms....

This paper combines three prototype endogenous growth models, the models with human capital accumulation introduced by Uzawa [1965] and Lucas [1988], variety expansion by Romer [1990], and quality improvements by Aghion and Howitt [1992], in order to investigate how these three engines of growth...

We investigate the incentive and the welfare implications of a merger when heterogeneous oligopolists compete both in process R&D and on the product market. We examine how a merger affects the output, investment, and profits of firms, whether firms have merger incentives, and, if so, whether...

This paper investigates an asymmetric duopoly model with a Hotelling line. We find that helping a small (minor) firm can reduce both social and consumer surplus. This makes a sharp contrast to existing works showing that helping minor firms can reduce social surplus but always improves consumer...

Based on a panel data set of Japanese manufacturing firms in research-intensive industries, we investigate quantitatively the extent to which debt outstandings in the 90s affected the firm's R&D activities. We find that massive debt outstandings had significantly negative effect on R&D...