Category Management in der Migros

Die Einführung von Category Management (CM) in einem Einzelhandelsunternehmen ist mit verschiedenen Herausforderungen verbunden. Sowohl Struktur als auch Kultur eines Unternehmens sind von diesem Prozess betroffen. Der Schweizer Marktführer Migros beschreibt seine Erfahrungen bei der Einführung von CM und zeigt auf, inwiefern Theorie und Praxis miteinander in Einklang gebracht werden k?nnen. Ein Anwendungsbeispiel aus dem Haushaltssortiment rundet den Erfahrungsbericht ab.     

Die Bewertung von Handelsrisiken eines Übertragungsnetzbetreibers anhand einer Monte-Carlo-Simulation

EnBW Transportnetze AG (TNG) is the transmission system operator (TSO) of Energie Baden-Württemberg AG. Due to the Renewable Energy Sources Act, the TSOs are obliged to take-up the (fluctuating) complete amount of electricity made of renewable resources. The TSOs have to transform this feeding into a constant output. Therefore, TNG has started trading on the European Power Exchange. The amount of electricity needed to be bought and sold respectively in order to create a constant output involves risks because of price volatility. As a result of the merit-order-effect, these risks increase. Due to this effect, procurement costs generally exceed sales revenues despite of well-balanced quantitative electricity tradings. For evaluating the procurement and merchandise risk at the intraday market, a Monte-Carlo-Simulation is executed on the basis of historical turnover data.     

Bashing and supporting central banks: the Bundesbank and the European Central Bank

In this paper, we analyse the influences leading to external pressure on or public support for German and European monetary policy. Based upon the findings for the Deutsche Bundesbank, lessons are drawn for the European Central Bank (ECB). We show that external pressure on the ECB stems mainly from politicians or from international organisations (such as the IMF). In contrast with evidence for the Bundesbank, interest groups (such as commercial banks) hardly attempt to influence European monetary policy. German data show that factors leading to external pressure on the central bank are rising unemployment and the threat that governments will lose their majority in the next election. Evidence for the latter is, however, weak, and we show that in any case this source of pressure is likely to be of minor importance for the ECB.     

The influence of disclosure policy on analyst behavior: The case of segment data

More transparent disclosure reduces the effort required to process reported information. The adoption of Statement of Financial Accounting Standards (SFAS) No. 131, Disclosures about Segments of an Enterprise and Related Information, increased the transparency of segment information reported by diversified firms. Using a long sample window (1988–2007) and a difference-in-difference design, this paper examines the association between corporate diversification and analysts' efforts—as reflected in analysts' idiosyncratic information precision and analyst consensus—across the old SFAS No. 14 and the new SFAS No. 131 segment reporting regime. Results indicate that SFAS No. 131 has improved segment reporting such that analysts need to invest relatively less effort generating idiosyncratic information when issuing forecasts for diversified firms. Given that analysts' information gathering efforts are costly, these findings are of interest to policy makers when assessing whether the intended reporting objectives of SFAS No. 131 are being met in a cost effective manner.     

Is soccer good for you? The motivational impact of big sporting events on the unemployed

We examine the effect of salient international soccer tournaments on the motivation of unemployed individuals to search for employment using the German Socio Economic Panel 1984–2010. Exploiting the random scheduling of survey interviews, we find significant effects on motivational variables such as the intention to work or the reservation wage. Furthermore, the sporting events increase perceived health as well as worries about the general economic situation.     

?Wir sind besser als die anderen??

The paper applies social psychology??s results on the theory of social comparison to media content. The finding that people tend to evaluate themselves better than they evaluate others, even if there is no foundation for that in reality, presents the starting point of these considerations. Such an optimistic bias can also be observed in social groups. It is established and distributed in small groups by interpersonal communication and contributes to the individuals?? identification with the group and, thus, to the group??s stability. The paper argues that this phenomenon should be applicable to larger social groups such as religious and ethnic groups or social strata. In these cases, the optimistic bias would have to be communicatively distributed through the media. We introduce a theoretical model that combines the role of media content, its individual reception and processing, and the reciprocal effect of processing on social structure. Subsequently, first empirical evidence of optimistic-bias presentations in media discourses is presented, and resulting problems for future research are discussed.     

Specific taxation,asymmetric costs,and endogenous quality

This paper shows how a specific tax—in contrast to an ad valorem tax—alters industry structure and firm-level performance in a monopolistic competition framework, where firms chose product quality endogenously and differ exogenously in productivity (i.e., marginal production efficiency). Industry equilibrium mechanisms and selection based on productivity play a significant role: A specific tax shifts market shares and profits toward firms with costs and prices above the industry average at the expense of low-cost firms. This reallocation of market shares releases a novel scale effect such that low-cost firms may quality downgrade, while high-cost firms always quality upgrade. There exists a parameter subspace, where this combines to a decrease on average quality for the industry. In comparison: An ad valorem tax only reduces the number of firms/varieties in the industry due to demand absorption, but affects neither firm-level performance nor industry structure.     

Wege zu einer st?rkeren Trennung von Investment- und Gesch?ftsbanking

In the United Kingdom, the United States, Australia and many other countries, ways to separate retail from investment banking are explored and put into practice. In Germany, there is great reluctance to undertake such steps. The main arguments against such a separation are the structure of the German banking sector, the universal banking system, and the claim that Lehman was (only) an investment bank, and its breakdown has triggered the subprime crises. These arguments, the authors show, are not convincing. The paper first discusses different views on a stronger separation of retail from investment banking and subsequently presents and analyses different proposals. Finally, the paper elaborates on the question of how to implement such a system in Germany.