Ein Peer to Peer Basiertes Modell Zur Dezentralisierung Elektronischer Marktplätze

This lecture introduces systematically into the problem of managing large data collections in peer-to-peer systems. Search over large datasets has always been a key problem in peer-to-peer systems and the peer-to-peer paradigm has incited novel directions in the field of data management. This resulted in many novel peer-to-peer data management concepts and algorithms, for supporting data management tasks in a wider sense, including data integration, document management and text retrieval. The lecture covers four different types of peer-to-peer data management systems that are characterized by the type of data they manage and the search capabilities they support.

Just like the industrial society of the last century depended on natural resources, today’s society depends on information and its exchange.

Applications that require a high degree of distribution and loosely-coupled connectivity are ubiquitous in various domains, including scientific databases, bioinformatics, and multimedia retrieval. In all these applications, data is typically voluminous and multidimensional, and support for advanced query operators is required for effective querying and efficient processing. To address this challenge, we adopt a hybrid P2P architecture and propose novel indexing and query processing algorithms. We present a scalable framework that relies on data summaries that are distributed and maintained as multidimensional routing indices. Different types of data summaries enable efficient processing of a variety of advanced query operators.

Am Beispiel der Absicherung des Wildschadens untersucht Thomas Zwack, inwieweit eine Abkehr von der klassischen Beziehung zwischen Versichertem und Versicherer auf Basis eines bilateralen Vertrags zwischen Privatpersonen neue Märkte eröffnen kann und mit neuartigen P2P-Geschäftsmodellen bislang nicht-versicherbare Risiken abgesichert werden können.

Psychologie trifft Gehirnforschung! In einem anregenden Dialog zeigen die beiden Autorinnen ein neues und einfach anwendbares Modell zur Steigerung der emotionalen Kompetenz. Das Modell berücksichtigt sowohl