A stochastic partial differential equation, or SPDE, describes the dynamics of a stochastic process defined on a space-time continuum. This paper provides a new method for solving SPDEs based on the method of lines (MOL). MOL is a technique that has largely been used for numerically solving...

In this paper we extend earlier work on the economics of shallow lakes by M\"aler, Xepapadeas and de Zeeuw (2003) to the case where two communities have incommensurable preferences about lake eutrophication. In the case of incommensurable preferences interest group behavior arises, we therefore...

The Global Correspondence Principle of Samuelson states that global comparative static results hold even in the absence of an initial stable equilibrium. This principle has been applied in recent studies of international trade with variable returns to scale to resolve paradoxical results with...

This paper develops an approach for valuing Internet Service Providers (ISPs). The viewpoint is taken that once access to the Internet is obtained it can then be characterized by non-rivalrous consumption and non-exhaustibility. However, the quality of access is affected by the capacity of the...