This paper examines the relationship between market integration and product diversification in a Chamberlinian model of monopolistic competition. In the first version of the model, production of the firm is organised in activities producing either one or two horizontally differentiated...

This paper examines the remarkable learning-by-doing in the windmill industry since it emerged in the beginning of the 1980's. Green subsidies for producing electricity by wind power has been a precondition for the rapid growth in the production of windmills. Based on time series of prices of...

This paper presents a dynamic international trade model based on monopolistic competition, where observed intra-industry differences at a given point in time reflect different stages of the firm’s life cycle. New product varieties of still higher quality enter the market every period rendering...

The European economic integration has been an ongoing process for nearly a half century. This article discuss initially the concept of integration and then gives an overall assessment of the development of integration on various areas. Evidence points to a remarkable process towards monetary...

On the basis of assessment data on land prices in Danish city areas, a model showing land rent gradients approximated by a third degree polynomial is estimated for 48 individual Danish cities. The intra-urban structure is connected to an inter-urban model by the expansion method, where the...

This paper examines the relation between price differences and quality differences in an oligopoly model with intra-industry trade, where goods are horizontally as well as vertically differentiated. The analysis demonstrates that the ratio of prices is not linked to the ratio of qualities in any...

We examine how openness interacts with the coordination of consumption–leisure decisions in determining the equilibrium working hours and wage rate when there are leisure externalities (e.g., due to social interactions). The latter are modelled by allowing a worker's marginal utility of...

This paper examines the relation between price differences and quality differences in an oligopoly model with intra-industry trade, where goods are horizontally as well as vertically differentiated. The analysis demonstrates that the ratio of prices is not linked to the ratio of qualities in any...

This paper examines the remarkable development of technology and the fast learning-by-doing in the windmill industry since it emerged in the beginning of the 1980s. Based on time series of prices of windmills a dynamic cost function for producing windmills is tested. The estimations verified...

The paper considers the owners of the firms as normal investors who want to optimise the return from their investments in accordance with their wealth constraint and the risk of their investment in the firm. The paper tests this theory on a representative sample of Danish companies including...