Peer-to-peer applications (P2P) are no longer limited to home users, and start being accepted in academic and corporate environments. While file sharing and instant messaging applications are the most traditional examples, they are no longer the only ones benefiting from the potential advantages of P2P networks. For example, network file storage, data transmission, distributed computing, and co...

Empirical evidence suggests that most nodes in BitTorrent (BT) participate in multiple torrents, but surprisingly little research exists on this topic. Here, we focus on a multi-torrent system, and specifically on (a) what incentives could be provided for nodes to contribute resources as seeds in a multi-torrent environment, and (b) what are the resulting performance consequences. We show why t...

[email protected] o v e r t h e pa S t d e c a d e , t h e p e e r -t o peer (P2P) model for building distributed systems has enjoyed incredible success and popularity, forming the basis for a wide variety of important Internet applications such as file sharing, voice-over-IP (VoIP), and video streaming. This success has not been universally welcomed. Internet Service Providers (ISP...

Mountain torrent disaster warning system is a significant non-engineering flood prevention measure for achieving the goals of flood prevention and disaster reduction in the related small rivers. After analyzing the design principle and objective of the system, we proposed a mountain torrent disaster warning system based on WEB GIS technology and the distributed hydrological model (DHM) of the r...

Although this paper is clearly more appropriate for the USENIX Internet Technologies and Systems symposium, it was instead submitted and accepted to the USENIX Symposium on Operating Systems Design and Implementation. The assumption here being that the issue is simply one of timing, as the paper was published in 2002 and USITS is held only during odd-numbered years. Napster had already come, hi...

Accurate debris-flow modelling depends on the ability to simulate surging and pulsing behaviour. However, our understanding of these phenomena is starved observational constraints. Here we propose use seismic measurements, which resolve arrival coarse-grained roll wave fronts in debris flows at Illgraben, Switzerland. Roll waves likely play a key role flow pulses but are typically only observed...