industrial symbiosis

Number of edits per user – This strongly fits the 90-9-1 Theory.

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This states that 90 percent of people may read or just try it once. About 9 percent contribute from time to time. Most of the actual contributions come from the remaining 1% who contribute very often. The top contributor has made several thousand edits, and was also the same person who initiated the use of the wiki in the group. Many of the other top contributors are PhD students who have used the wiki over several years.

This is a visualization of the evolution of wiki.tudelft.nl from the very beginning, 5 years ago. Each node is a page, links are connections between pages. Graph is laid out using a force-directed algorithm, where the edges (links between pages) pull the nodes (pages) together, and the nodes (pages) repel each other. This means that the more tightly connected nodes will be closer together than weakly connected ones, which are pushed to the outside. The entire thing is created using Prefuse (http://prefuse.org), wiki is using the TWiki engine (http://twiki.org). The soundtrack is from DJ Cary’s Eastern Grooves compilation from Magnatune.com. More info about this can be found at http://wiki.tudelft.nl/bin/view/Main/WikiGrowthOverTime

Source: Chris Davies, Industrial Ecology Wiki

National Industrial Symbiosis Programme promotional video from the UK

NISP is a free business opportunity programme that delivers bottom line, environmental and social benefits and is the first industrial symbiosis initiative in the world to be launched on a national scale.

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