Der An- und Verkauf von Erdgas an Grosshandelsmaerkten wird in einem zunehmend liberalisierten Gasmarkt auch in Kontinentaleuropa weiter an Bedeutung gewinnen. Die Preise an diesen Maerkten bilden sich aus Angebot und Nachfrage; wie in jeder netzgebundenen Industrie kommt der Infrastruktur und...

In this paper we propose an analytical approach to obtain so-called efficient policies in terms of environmental and economic objectives. A policy is said to be efficient if any environmental or economic achievement is obtained with the minimum possible detriment to other relevant objectives. We...

Because real choice is an important quality parameter for the retail sector, managers of retailing companies need an instrument to assist them in optimising the diversity of options provided to their customers. In this paper, using the weighted diversity index of Guia u and Guia u), some...

This paper studies the problem of a company which expands its stochastic production capacity in irreversible investments by purchasing capital and faces both fixed and proportional costs. The objective of the company is to find optimal production decisions to maximize its expected total net...

We consider a single-asset investment fund that in the absence of transactions costs would hold a constant amount of wealth in the risky asset. In the presence of market frictions wealth is allowed to fluctuate within a control band: Its upper (lower) boundary is chosen so that gains (losses)...

Some aspects connected with biactive portfolio of stocks are examined. The notions of ?- and V-portfolio and respectively ?- and V-optimal portfolio are defined. The assertion of the existence of V-biactive portfolios is formulated and proven. Some conditions are drawn out in the presence of...

This paper uses a structural approach to examine who matches with whom. A two-sided matching model that allows for marital sorting in response to marriage market flexibility and agents' preferences is utilized. Estimation is based on imbedding the numerical solution of a matching model within a...

TMany negotiations are characterised by dynamic accumulation: current agreements affect future bargaining possibilities. We study such situations by using repeated bargaining games in which two parties can decide how much to invest and how to share the residual surplus for their own consumption....

We study a Ramsey problem in in¯nite and continuous time and space. The problem is discounted both temporally and spatially. Capital flows to loca- tions with higher marginal return. We show that the problem amounts to optimal control of parabolic partial differential equations (PDEs). We rely...

We identify a natural way of ordering functions, which we call the interval dominance order and develop a theory of monotone comparative statics based on this order. This way of ordering functions is weaker then the standard one based on the single crossing property (Milgrom and Shannon, 1994)...