This paper analyses the effects of concentration on profitability in the US banking sector from 1994-2005, using bank-level panel data. A new index of concentration is proposed, which reflects the depth and intensity of concentration. The econometric specification facilitates the simultaneous...

For methods of the profit division in the bilateral monopoly of the mine and the power station sug-gested in the first part of this paper the formulae for lignite price and shares in the joint profit of the mine and the power station are calculated. The proposed profit division contain: the...

The field of behavioral economics is one of the fastest-growing fields in economics in recent years. Not long ago this was a small field, but over the last decade or so, the field gained more recognition, and today it seems clear that psychological motivations and biases affect economic behavior...

This paper employs the Panzar and Rosse (1987) and the Bresnahan models to determine the level of competition in the South African banking sector. This level of competition was tested during the period 1998 to 2008 for the Panzar and Rosse approach and from 1992 to 2008 for the Bresnahan model....

Public Duties in Islam is the English translation of Ibn Taymiyah’s al-Hisba fi'l Islam by Muhtar Holland. It is a useful addition to Islamic economic literature in English language. Notwithstanding a few small errors, the translation reads well and the notes are excellent. This book is a good...

We reconsider the problem of cartel stability in a linear symmetric Cournot oligopoly by assuming that every coalition of firms defecting from a cartel can choose its quantity before the remaining firms. We show that differently from Salant et al. (1983) the only profitable cartel includes all...

The bulk of the global innovative effort takes place in 5 countries: USA, Japan and China as leaders, with France and United Kingdom as immediate followers, which all display, on the long run, a negative marginal value added on innovation. The present paper attempts to answer the following...

We study third degree price discrimination in intermediate good markets, in which costs of production for the downstream firms are determined by their investment choices. We focus on the effect of the sequence of firm actions and analyze two models with different timing of investments, before or...

This article seeks to explain why Spanish merino wools arrived so late in the Low Countries, only from the 1420s, why initially only those cloth producers known as the 'nouvelles draperies' chose to use them, and why their resort to such merino wools allowed at least some of them to escape the...

Lecture on the first SFB/TR 15 meeting, Gummersbach, July, 18 - 20, 2004We develop a general theoretical framework of trade on a platform on which buyers and sellers interact. The platform may be owned by a single large, or many small independent or vertically integrated intermediaries. We...