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Credit default swaps drawup networks: Too interconnected to be stable?

We analyse time series of CDS spreads for a set of major US and European institutions in a period overlapping the recent financial crisis. We extend the existing methodology of -drawdowns to the one of joint -drawups, in order to estimate the conditional probabilities of spike-like co-movements among pairs of spreads. After correcting for randomness and finite size effects, we find...

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English / 01/01/2013

Bootstrapping topology and systemic risk of complex network using the fitness model

In this paper we present a novel method to reconstruct global topological properties of a complex network starting from limited information. We assume to know for all the nodes a non-topological quantity that we interpret as fitness. In contrast, we assume to know the degree, i.e. the number of connections, only for a subset of the nodes in the network. We then use a fitness model,...

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English / 01/01/2013

Evolution of controllability in interbank networks

The Statistical Physics of Complex Networks has recently provided new theoretical tools for policy makers. Here we extend the notion of network controllability to detect the financial institutions, i.e. the drivers, that are most crucial to the functioning of an interbank market. The system we investigate is a paradigmatic case study for complex networks since it undergoes dramatic...

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English / 01/01/2013

Nonparametric analysis of treatment effects in ordered response models

Treatment analyses based on average outcomes do not immediately generalize to the case of ordered responses because the expectation of an ordinally measured variable does not exist. The proposed remedy in this paper is a shift in focus to distributional effects. Assuming a threshold crossing model on both the ordered potential outcomes and the binary treatment variable, and leaving...

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English / 01/01/2013

Applying the 'comply-or-explain' principle: discursive legitimacy tactics with regard to codes of corporate governance

The comply-or-explain principle is a central element of most codes of corporate governance. Originally put forward by the Cadbury Committee in the UK as a practical means of establishing a code of corporate governance whilst avoiding an inflexible “one size fits all” approach, it has since been incorporated into code regimes around the world. Companies can either comply with code...

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English / 01/01/2013

The group size and loyalty of football fans: a two-stage estimation procedure to compare customer potential across teams

The paper presents estimation results on the size and loyalty of sport teams’ supporter groups in professional German football. Based on a novel two-stage estimation procedure, we find clear evidence for heterogeneity across teams. In the first stage, a random-utility model for a representative consumer is modelled and fitted to more than 1700 matches over the seasons 1996–2001. In...

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English / 01/01/2013

Vertrauen in die unternehmerische Zahlungsfähigkeit: Die Behandlung des eigenen Kreditrisikos im Jahresabschluss

Der Ausweis des eigenen Kreditrisikos ist ein brisantes Thema. Mit IFRS 9 sind Gewinne und Verluste aus eigenem Kreditrisiko bei der Anwendung der Fair-Value-Option erfolgsneutral auszuweisen. Für die Berechnung dieser Gewinne undverluste schlägt der Standard eine intuitive Methode vor. Dieser Beitrag zeigt einewesentliche Schwäche dieser Methode bezüglich des ausgewiesenen...

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Deutsch / 01/01/2013

Digital Content Strategies

This paper studies content strategies for online publishers of digital information goods. It examines sampling strategies and compares their performance to paid content and free content strategies. A sampling strategy, where some of the content is offered for free and consumers are charged for access to the rest, is known as a "metered model" in the newspaper industry. We...

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English / 01/01/2013

Managing legitimacy in complex and heterogeneous environments: Sustainable development in a globalized world

The sustainability problems with regard to the production, distribution, and consumption of goods and services increasingly challenge the legitimacy of corporations. The literature distinguishes three strategies that corporations commonly employ to respond to legitimacy problems: adapt to external expectations, manipulate the perception of their stakeholders, or engage in a discourse...

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English / 01/01/2013

Erfolgsfaktoren für das Social Media-Marketing von KMU – Eine quantitativ-explorative Analyse

Der Einsatz Sozialer Medien zur Erreichung marketingpolitischer Ziele ist bei KMU inzwischen weit verbreitet. Viele dieser Unternehmen gehen dabei allerdings eher intuitiv denn zielgerichtet vor – selten mit Erfolg. Gleichzeitig liefert der aktuelle Stand der Forschung nur wenig fundiertes Wissen im Hinblick auf die kritischen Erfolgsfaktoren einer mittelständischen Social Media-...

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Deutsch / 01/01/2013

What makes a resource valuable? Identifying the drivers of firm-idiosyncratic resource value

We fill a gap in the resource-based literature by identifying conditions and mechanisms that make a resource valuable to a firm ex ante-that is, before a decision on acquiring or building it is made. These conditions are (1) the firm's ex ante market position; (2) its ex ante resource base, which allows for complementarities; (3) its position in interorganizational networks,...

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English / 01/01/2013

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