Probabilistic Argumentation with Epistemic Extensions and Incomplete Information

Abstract argumentation offers an appealing way of representing and evaluating arguments and counterarguments. This approach can be enhanced by a probability assignment to each argument. There are various interpretations that can be ascribed to this assignment. In this paper, we regard the assignment as denoting the belief that an agent has that an argument is justifiable, i.e., that both the premises of the argument and the derivation of the claim of the argument from its premises are valid. This leads to the notion of an epistemic extension which is the subset of the arguments in the graph that are believed to some degree (which we defined as the arguments that have a probability assignment greater than 0.5). We consider various constraints on the probability assignment. Some constraints correspond to standard notions of extensions, such as grounded or stable extensions, and some constraints give us new kinds of extensions

Stratified Labelings for Abstract Argumentation

We introduce stratified labelings as a novel semantical approach to abstract argumentation frameworks. Compared to standard labelings, stratified labelings provide a more fine-grained assessment of the controversiality of arguments using ranks instead of the usual labels in, out, and undecided. We relate the framework of stratified labelings to conditional logic and, in particular, to the System Z ranking functions

Ganztagspädagogik in der Zusammenarbeit von Schule und Jugendhilfe. Perspektiven der Jugendhilfe

Ganztagspädagogik erhält in Deutschland aus vielfältiger Not eine Chance. Im Folgenden werden Ansprüche, Bedingungen und Hoffnungen, Möglichkeiten, Gefahren und Grenzen von abgestimmten Konzepten der Bildung, Betreuung, Erziehung und Unterstützung in offenen Kooperationsvorhaben von Schule und Jugendhilfe systematisiert. Dabei werden pädagogische und strukturelle Analyse- und Prüfkriterien aus Jugendhilfe-Sicht entwickelt, die zur internen Selbstklärung beitragen und als mögliche Aushandlungsparameter mit Schule fungieren sollen. (DIPF/Orig.

Geschäftsmodell Tanztourismus in Sevilla und Buenos Aires

Flamenco und Tango gehören zu den ersten Assoziationen, mit denen Sevilla und Buenos Aires in Verbindung gebracht werden. Seit der Entstehung beider Kunstformen im 19. Jahrhundert entwickelte sich kontinuierlich ein Tanztourismus, der bis heute zu ausdifferenzierten Geschäftsmodellen führte. Flamenco und Tango erlangten als immaterielles Weltkulturerbe außerdem erhebliche Bedeutung für das Destinationsimage der beiden Städte. Das Modell von Gereffi et al. (2005) zu «Governance of Global Value Chains» wird in adaptierter Form auf Flamenco- und Tangotanztourismus angewendet, um Bedeutungsdimensionen im Destinationsmanagement herauszuarbeiten

Inseparable, but not equal: assessing U.S.-EU relations in the wake of the NSA surveillance affair

The revelations about the data collection and espionage activities of the National Security Agency (NSA) have left their mark on transatlantic relations. In the beginning of 2013, the future of relations between the United States and the European Union looked bright, fueled by optimism about the negotiation of a transatlantic free trade area. Since then, tensions have risen over leaked information about the NSA's actions. The dispute is significant beyond the immediate issue of surveillance because it draws attention to the enduring asymmetries in the transatlantic relationship. Discussions about its decline notwithstanding, the U.S. upholds its claim to global leadership and continues to rely on controversial security measures in the name of fighting terrorism. Despite their initial indignation at the revelations, the leaders of European governments have offered conflicting and ineffective responses. In the intelligence field as well as the EU's broader relationship with the U.S., Europe does not seem prepared to challenge the status quo. This poses questions about the nature of future transatlantic cooperation. (author's abstract