Modeling of CPDOs – Identifying optimal and implied leverage

When the subprime crisis started to emerge, collateralized products based on credit default swap (CDS) exposures combined with security features seemed to be a more rational alternative to classic asset backed securities. Constant Proportion Collateralized Debt Obligations (CPDOs) are a mixture of Collateralized Debt Obligations (CDOs) and CPPIs with inverse mechanism. This new asset aims at meeting the investors’ demand for credit derivatives with security enhancements, but to our knowledge quantitative approaches for pricing other than simulation algorithms do not exist yet. CPDOs became famous notably by Standard & Poor’s rating model error which illustrated that closed-form analytical pricing is necessary in order to evaluate and understand complex derivatives. This article aims to shed a light on CPDOs’ specific structural enhancements and mechanisms. We quantify inherent risks and provide a dynamic closed-form pricing formula.     

Tumorpatienten – die Rolle der Angehörigen

Zusammenfasung  Belastungen, Bew?ltigungen, Ressourcen — Angeh?rige von Patienten werden im medizinischen Behandlungsprozess nicht selten als „St?rfaktoren“ wahrgenommen, die durch ihre Gegenwart, ihre Fragen und Anliegen den Arbeitsalltag „behindern“. Nur allzu schnell wird übersehen, welche gro?e Bedeutung sie bei der Betreuung der Patienten haben und wie hilfreich und unterstützend sie auch für das Pflegepersonal sein k?nnen – das gilt auch und besonders in der Onkologie.     

Proportionality and the power of unequal parties

In this paper we introduce the concept of an overall power function that is meant to combine two sources of a party's power in a parliament. The first source is based on the possibilities for the party to be part of a majority coalition and it is typically modeled using a cooperative simple game. The second source takes into account parties' asymmetries outside the cooperative game and it is displayed by a vector of exogenously given weights. We adopt a normative point of view and provide an axiomatic characterization of a specific overall power function, in which the weights enter in a proportional fashion.     

Konsonanz 30 Jahre später

Consonant coverage is assumed to be an important prerequisite for media effects to occur. However, empirical evidence for this assumption is largely missing. Focusing on the issue of European integration, this study investigated, in 13 EU member states, whether consonant coverage affected EU citizens’ opinions on the issue. For each country and at the individual level of analysis, the study linked content analyses of the main evening news and the most prestigious newspaper with survey data. Consonant coverage influenced people’s opinions about European integration, while dissonant coverage made no impact. Both EU supporters and EU opponents were susceptible to the effects of consonant coverage, which tentatively suggests that consonant coverage may surmount selective mechanisms. In sum, the study is the first to provide evidence that consonant coverage may indeed enhance media effects.