serious alternative. This work analyzes the implementation of both a client-server and a peer-to-peer networking model for the prototype shooter game Planet π4. Initially, a survey introduces recent academic approaches to peer-to-peer systems specifically designed for games. Of those, one system

of scalability and maintainability. Hence, different approaches are based on Peer-to-Peer (P2P) technology. In particular, fast-paced NVEs stress these systems and most likely cause high overlay maintenance overhead. This Master’s Thesis presents a novel approach to spatial Publish/Subscribe (Pub/Sub) in P2P

Prüfungsbehörde vorgelegen. Darmstadt, den 30th March 2011 Massively multiplayer online games (MMOGs) are very popular nowadays, but mostly still are implemented in a client-server based approach. This thesis is part of a study on the question: Are peer-to-peer networks suitable for real time applications like

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Abstract: Online learning initia-tives over the past decade have become increasingly comprehen-sive in their selection of courses and sophisticated in their presen-tation, culminating in the recent announcement of a number of consortium and startup activities that promise to make a university

management systems overlook the importance of peer leaning with limited builtin functions for such activities. The consequence is that instructors have to manage many "one-to-one" relationships instead of a "one-to-many" relationship as in the traditional classroom. Using wiki as a peer

in these networks, and (3) the extremely limited computational and energy resources available. Until now, the burden of handling these issues was put on the software application developer. This dissertation presents three novel programming models and middleware systems that address these challenges: Limone, Agilla

and governing decentralized event-based enterprise systems at runtime. We present a dashboard based on industry-strength technology as proof of concept and discuss how to integrate usage statistics provided on-the-fly by ASIA into metrics for runtime governance. We evaluate our monitoring approach in terms

1. Networking trends 2. QoS over data networks 3. Label switching 4. Gigabit, 10 Gb Ethernet, RPR 5. Storage area networks 6. IP over DWDM 7. Wireless 8. Voice over IP

Abstract Message-oriented event-driven systems are becoming increasingly ubiquitous in many industry do-mains including telecommunications, transportation and supply chain management. Applications in these areas typically have stringent requirements for performance and scalability. To guarantee