Friday, September 28, 2012
Motherboard's documentary on Occupy Wall Street, hacktivism, and the hackers trying to build a distributed network for the Occupy movement and beyond.
Mesh networking (topology) is a type of networking where each node must not only capture and disseminate its own data, but also serve as a relay for other nodes, that is, it must collaborate to propagate the data in the network.
A mesh network can be designed using a flooding technique or a routing technique. When using a routing technique, the message propagates along a path, by hopping from node to node until the destination is reached. To ensure all its paths' availability, a routing network must allow for continuous connections and reconfiguration around broken or blocked paths, using self-healing algorithms. A mesh network whose nodes are all connected to each other is a fully connected network. Mesh networks can be seen as one type of ad hoc network. Mobile ad hoc networks (MANET) and mesh networks are therefore closely related, but MANET also have to deal with the problems introduced by the mobility of the nodes.
The self-healing capability enables a routing based network to operate when one node breaks down or a connection goes bad. As a result, the network is typically quite reliable, as there is often more than one path between a source and a destination in the network. Although mostly used in wireless scenarios, this concept is also applicable to wired networks and software interaction.
See Microsft research on Self Organizing Wireless Mesh Networking.
Build your own Freedom Tower with these plans.
Free Network Foundation
Monday, September 17, 2012
A revealing look into the bands comprising the 1978 London punk-rock scene, and a peek back-stage at the lives behind the facade. Includes performances by Sex Pistols, Siouxsie and the Banshees, Eater, and other concurrent bands. Most of the bands were filmed at the Roxy club in London, where Don Letts worked as a DJ. Letts filmed the bands very simply with a Super-8 camera, and also filmed on the tour bus and at shows with The Clash and The Slits. The Sex Pistols were filmed at Screen on the Green in London on 3 April 1977, Sid Vicious's first show with the band.