Ecological systems (ecosystems, for short) are complex systems of interacting species, plants and animals, where each of the species consists of individual organisms that interact with organisms of the same or other species in various ways: they compete for scare resources and they are involved...

Gegenstand dieses Artikels ist die Berechnung einer Translog-Produktionsfunktion für Gesamtdeutschland, die mit der endogenen Wachstumstheorie theoretisch fundiert wird. Die räumlich-ökonometrische Schätzung zeigt, dass die einbezogenen Produktionsfaktoren einen signifikanten positiven...

Mit der fortschreitenden Ausrichtung der Regionalpolitik auf innovative Netzwerke gewinnt die Abgrenzung von Innovationsregionen - Regionen, die die Informationsverflechtungen im Raum widerspiegeln - an Bedeutung. Die räumlich-ökonometrische Schätzung einer aus der endogenen Wachstumstheorie...

Der wirtschaftliche Entwicklungsstand von Regionen hängt nicht nur von ihrer eigenen Leistungsfähigkeit ab, sondern aufgrund räumlicher Überschwappeffekte auch von jener angrenzender Wirtschaftsräume. Positive Spillovers (Lieferverflechtungen, Nutzung der Infrastruktur in Nachbarregionen u....

Convergence of EU regions is an often examined research question. However, there are no studies available which include in their analysis the New Member States from the former Eastern Bloc. We estimate several models of absolute convergence and of conditional convergence taking into account the...

The convergence of German regions represents a politically explosive question. Different studies examined convergence processes of Germany. We derive equations to estimate the convergence speed on basis of a Solow model, to which human capital is added. The geographically weighted regression...

In the basic model of international environmental agreements (IEAs) (Barrett 1994, Rubio and Ulph 2006) extended by international trade, self-enforcing - or stable - IEAs may comprise up to 60 % of all countries (Eichner and Pethig 2013). But these IEAs reduce total emissions only slightly...

This paper studies the formation of self-enforcing global environmental agreements in a world economy with international trade and two groups of countries that differ with respect to fuel demand and environmental damage. It investigates whether the signatories' threat to embargo (potential) free...

This paper studies within a multi-country model with international trade the stability of international environmental agreements (IEAs) when countries regulate carbon emissions either by taxes or caps. Regardless of whether coalitions play Nash or are Stackelberg leaders the principal message is...

We investigate the formation of global climate agreements (= stable grand climate coalitions) in a model, in which climate policy takes the form of carbon emission taxation and fossil fuel and consumption goods are traded on world markets. We expand the model of Eichner and Pethig (2014) by...