The description of the dynamics and fluctuations of macro variables remains one of the most exciting problems of financial economics. This paper models macro variables via the description of transactions between agents. We use risk ratings x of agents as their coordinates in the economic space....

There is a huge literature on the effects of uncertainty on trade levels. One very strong result of that literature is that uncertainty should not matter, as long as well developed forward markets exist. The empirical implications of this result, however, are hard to find in the data. We model...

Steht der deutschen Wirtschaft eine Rezession bevor? Das ist eine Frage, die momentan häufig in den Medien diskutiert wird. Doch was ist überhaupt eine Rezession? Dies ist nicht zuletzt eine Frage der Definition, die in der wissenschaftlichen Literatur und auch in der Praxis leider nicht...

Steht der deutschen Wirtschaft eine Rezession bevor? Das ist eine Frage, die momentan häufig in den Medien diskutiert wird. Doch was ist überhaupt eine Rezession? Dies ist nicht zuletzt eine Frage der Definition, die in der wissenschaftlichen Literatur und auch in der Praxis leider nicht...

We extend the model of Nishimura and Shimomura (2002) to consider a two-country framework where under autarky indeterminacy arises in one country but determinacy in the other, and show that indeterminacy could be eliminated when trade takes place between the two

Constant Market Share Analysis (CMSA) is a method which decomposes the variation of market shares of any trader country. The more recent version is proposed by Fagerberg and Sollie (1985) that avoids some limits deriving from previously specifications. After explicating how CMSA works, this note...

This paper describes evolution of economic and financial transactions between agents as ground for modelling fluctuations of economic and financial variables. We use risk ratings x of agents as their coordinates x on economic space. Transactions between agents define evolution of their economic...

A very influential model in the determination of capital requirements for credit exposures is Vacisek's model. This model underpins the Basel framework for credit exposures of financial institutions. Vacisek's model uses information on asset correlation and the unconditional mean of the...

This research examines the economic origins of Islam and uncovers two empirical regularities. First, Muslim countries, virtual countries and ethnic groups, exhibit highly unequal regional agricultural endowments. Second, Muslim adherence is systematically larger along the pre-Islamic trade...

The global process of strengthening and harmonization of intellectual property rights (IPRs) systems has been intensified in the last twenty five years by the signing of trade agreements (TAs) that include chapters with intellectual property (IP) provisions and other non-trade-related issues....