Massively Multiplayer Online Games are a growing segment on the game industry, combining the excitement of 3D games with the opportunity of playing with thousands of players worldwide. The common network model used is a straightforward client/server one, where all the simulation and events are processed on the server. This creates a bottleneck on the server-side, and harshly affects the scalabi...

TCP is the transport protocol used predominantly in the Internet as well as in peer-to-peer networks. However, peerto-peer networks exhibit very different characteristics from those of conventional client-server networks. In this paper, we argue that the unique characteristics of peer-to-peer networks render TCP inappropriate for effective data transport in such networks. Specifically, we motiv...

The Free Technology Academy (FTA) is a programme of masterlevel courses on Free Software and Open Standards that publishes all of its materials as Open Educational Resources. The FTA is run through a virtual campus, entirely based on Free Software and implemented as part of a European project. The goal is to make the production of course materials economically sustainable. We surmise that peer ...

Fueled by the success of large-scale file sharing applications, the peer-to-peer model is advancing as a powerful computing paradigm. However, peer-to-peer technology is still at an adolescent stage of development, due partly to the fact that network system designers do not fully understand the ramifications of designing large-scale peer-topeer systems. In this paper we present an analysis of p...

BACKGROUND Little is known about whether peer support improves outcomes for people with severe mental illness. METHOD A systematic review and meta-analysis was conducted. Cochrane CENTRAL Register, Medline, Embase, PsycINFO, and CINAHL were searched to July 2013 without restriction by publication status. Randomised trials of non-residential peer support interventions were included. Trial inte...

Contemporary object-oriented programming seeks to enable distributed computing by accessing remote objects using blocking remote procedure calls. This technique, however, suffers from several drawbacks because it relies on the assumption of stable network connections and synchronous method invocations. In this paper we present an approach to support distributed programming, which rely on local ...

As peer-to-peer systems are evolving from simplistic application specific overlays to middleware platforms hosting a range of potential applications it has become evident that increasingly configurable approaches are required to ensure appropriate overlay support is provided for divergent applications. This is exacerbated by the increasing heterogeneity of networked devices expected to host the...

In current Internet mail transfer mechanism, mail servers usually do a lot of extra mail processing like mail filtering. The workload of mail servers is heavy in terms of storage and processing time. Junk mails as well as important messages are all stored on mail server, retrieved and then deleted by end users. It’s a waste of processing time, storage space, and precious network resources. In t...