Information and communication technology opens up an unprecedented space of design options for the creation of economic value. The business model ``community ́ ́ and the role ``community organizer ́ ́ are determined to become pivotal in the digital economy. We argue that any online business model needs to take communities and community organizing in the design of communication and the system archit...

Finding the right pricing for music downloads is of ample importance to the recording industry and music download service providers. For the recently introduced music downloads, reference prices are still developing and to find a revenue maximizing pricing scheme is a challenging task. The most commonly used approach is to employ linear pricing (e.g., iTunes, musicload). Lately, subscription mo...

The peer-to-peer (P2P) paradigm for building distributed applications has recently attracted the attention of industry and media primarily due to the enormous success of systems such as Napster, Gnutella and Freenet. The multitude of projects that have been proposed based on P2P all need to confront common problems including security, reliability and routing. Unfortunately, traditional techniqu...

Integrierte Informationssysteme basieren meist auf einem globalen Schema, dessen Bildung und Wartung aufwändig ist. Praktiker bevorzugen jedoch den direkten Datenaustausch zwischen etablierten Systemen. Diese Anforderungen adressieren Peer-basierte Datenmanagementsysteme (PDMS) in dynamischer und skalierbarer Weise. Anstelle eines globalen Schemas und Schema-Abbildungen zwischen globalem und lo...

Peer-to-peer technology implemented in systems like Napster allowed sharing of digitized music across the web in an incredibly easy to use system. This paper describes a prototype peer-to-peer system for networking distributed and heterogeneous databases of formalized mathematics. We also propose a general framework for deductive search in heterogeneous libraries of formal content. As participa...

A major criticism of peer-to-peer (P2P) networks, such as Napster and Gnutella, is that their main purpose is the pirating of intellectual property. However, a redeeming aspect of P2P networks is that they can perform a valuable promotional function by making users aware of a product that they would not otherwise have considered. Specifically, peers can recommend a song to another peer. Music t...

During the learning process, sharing and participating is the important thing. Efficiently using the learning contents has been an active research topic in developing the educational material. It probes the environment of the learning process through Sharable Content Object Reference Model (SCORM). Peer to Peer (P2P) technology seems to be the most well suited mechanism to deal with the problem...

Peer-to-peer technology implemented in systems like Napster allowed sharing of digitized music across the web in an incredibly easy to use system. This paper describes a prototype peer-to-peer system for networking distributed and heterogeneous databases of formalized mathematics. We also propose a general framework for deductive search in heterogeneous libraries of formal content. As participa...

Abstract – Peer-to-Peer (P2P) networks and their applications gain increasing importance in today’s Internet, as already today the majority of IP traffic is caused by P2P applications. Since the upcoming of Napster a lot of research has been done in this area producing interesting and promising results. Still, growing demands like less data rate consumption, faster and more reliable search resp...

I n the days before personal computers became commonplace, a simple and direct system ensured stable relationships among artists, producers, and consumers. An artist would create a work, then give it and certain accompanying rights to a producer. The producer would manufacture a physical artifact that embodied the work, then the producer or its representative would market this artifact, generat...