We consider the problem of maximizing terminal utility in a model where asset prices are driven by Wiener processes, but where the various rates of returns are allowed to be arbitrary semimartingales. The only information available to the investor is the one generated by the asset prices and, in...

In Folge der steigenden Nachfrage nach ethischen Kapitalanlagen stehen die Unternehmen vor der Herausforderung, neben den typischen monetären Zielen auch Umweltschutzziele in die Investitionsbewertung einbeziehen zu müssen. Bestehende Ansätze der Investitionsbewertung unter Berücksichtigung...

We introduce knowledge spillovers as an externality in the production function of competitive ��firms operating in a ��nite spatial domain under adjustment costs. Spillovers are spatial as productive knowledge ��flows more easily among firms...

We introduce knowledge spillovers as an externality in the production function of competitive firms operating in a finite spatial domain under adjustment costs. Spillovers are spatial as productive knowledge flows more easily among firms located nearby. When knowledge spillovers are not...

Forest management aims at building ecological networks that minimize the impacts on timber production. We formalize the construction of ecological networks in forest environments as the optimal control dynamic graph-theoretic problem. The ecological network is based on a set of bioreserves and...

Forest management aims at building ecological networks that minimize the impacts on timber production. We formalize the construction of ecological networks in forest environments as the optimal control dynamic graph-theoretic problem. The ecological network is based on a set of bioreserves and...

Policy makers constantly face optimal control problems: what controls allow to achieve certain targets in, e.g., GDP growth or inflation? Conventionally this is done by applying certain linear-quadratic optimization algorithms to dynamic econometric models. Several algorithms extend this...

This essay develops a dynamic general equilibrium model of an energy crop. The model can guide policy to resolve the ‘food or fuel’ dilemma. Data from Thailand were employed in calibrating the model, with cassava as the energy crop. The stationary state solution gave the set of optimal...

The linear-quadratic (LQ) optimization is a close to standard technique in the optimal control framework. LQ is very well researched and there are many extensions for more sophisticated scenarios like nonlinear models. Usually, the quadratic objective function is taken as a prerequisite for...

This paper is concerned with the classic topic of intertemporal resource economics: the optimal harvesting of renewable natural resources over time by one and several resource owners with conflicting interests. The traditional management model, dating back to Plourde (1970), is extended towards...