This paper develops the Hotelling spatial model investigating the optimal choices of R&D risk in a market exhibiting network externalities. Assuming that firms perform R&D projects with identical expected outcomes but different risk degrees, it is found that, under certain conditions, the level...

Pattern dynamics of a three-trophic population model was numerically investigated in a two-dimensional space. By measuring the spatial correlation function of the domain patterns, whose density was higher than 90% of the maximum density in the whole area, we found that the characteristic length...

In the presence of R&D spillovers, this paper analyzes the regulated firms' R&D performances according to their noncooperative or cooperative R&D activities. First, it analyzes the R&D equilibrium in local (natural) monopolies, examines its welfare effects, and finds some relationship between...

This paper investigates the impacts of competition structures on firms’ incentives for adopting strategic environmental corporate social responsibility (ECSR) certified by a Non-Governmental Organization. We show that, to induce firms to adopt certified ECSR, the certifier will set a standard...

Korea has focused on growth-oriented policies by creating new housing units rather than maintaining or rehabilitating existing ones although having a housing stock as huge as those of other advanced nations. There have been, thus, few efforts to develop professional human resources who maintain...

Hydrogen scenarios are set by mixing three alternatives of demand side and three alternatives of supply side corresponding to demand side. The demand side alternatives are classified as a baseline demand, high demand, low demand according to hydrogen demand. Under the baseline demand scenario,...

The purpose of this study is to analyze the determinants affecting Korean farmers' choice of adaptation measures to climate change using multinomial logit model. The major findings of this study are summarized as follows. First, the results indicate that 70.7 percent of farmers have adapted to...

This article examines the results of an optimal output tax and an optimal ad valorem tax for a polluting oligopolist under demand uncertainty and then compares them with conventional results under an assumption of certainty. We show that, for general representations of uncertainty, the optimal...

This article considers the vertical structure of the telecommunications industry and examines the welfare effects of privatization on the public enterprise, where the public enterprise supplies the essential network service of the upstream market and competes against private, independent firms...

This paper analyzes price competition in a differentiated goods market between online and offline firms, and compares equilibrium prices, market demands, and profits of the firms. We also investigate the effects of a commodity tax on offline firms and Internet taxes on online firm regarding...