Cooperations among firms as well as enterprise networks - albeit not a new phenomenon - gain attention both in science and practice since state of the art technologies such as internet and new information- and communication-media open new dimensions of its design. Network structures and concepts...

This paper analyses the environmental dimensions the past accession of Greece, Portugal and Spain to the EU in order to draw lessons for the current accession of countries of Central and Eastern Europe. A distinction is made between scale, composition and technique effects. Two major conclusions...

We present an optimal endogenous growth model with an environmental asset which delivers a direct social utility value. The efficiency of the production services provided by the environmental asset directly depend on past capital accumulation. Such an assumption corresponds to assuming that past...

The importance of ecosystem functions for humankind is well known. But only few attempts have been undertaken to estimate the economic value of these ecosystem services. In particular, indirect methods are rarely used, even though they are most suitable for the task. This discrepancy is because...

We develop and apply a new method for estimating the economic benefits of an environmental amenity. The method fits within the household production framework (Becker 1965), and is based upon the notion of estimating the derived demand for a privately traded option to utilize a freely-available...

In an integrated dynamic general equilibrium model of the economy and the ecosystem humans and wildlife species compete for land and prey biomass. We introduce a competitive allocation mechanism in both submodels such that economic prices and ecosystem prices guide the allocation in the economy...

Past population dynamics in Africa have remained largely elusive due to the lack of demographic data. Researchers are understandably deterred from trying to explain what is not known and African historical population estimates suffer from this lack of interest. In this paper I explain present...

Im vorliegenden Aufsatz wird ein Begriffskonzept entwickelt, das zum besseren Verständnis des Zusammenspiels der Dynamiken von Ökosystemen und Wirtschaft dient: das Konzept des Bestandes. Der Bestandsbegriff wird allgemein mengentheoretisch formuliert. Die zentrale Eigenschaft eines Bestandes...