Friday, March 14, 2003

RNA motors (copy device with energy source)

Journal of Biological Chemistry, February 2003
RNA and the energy-beargin organic molecule ATP together form one of the strongest nanometer-size motors. Molecular biologists at Purdue University have found that in the bacteria-killing virus Phi 29, ATP can bind to and fuel a powerful motor made of six RNA molecules. The virus uses ATP-powered RNA to shuffle its genes. Researchers hope to devise machines that fuel themselves with organic molecules.

"I think RNA can be made to do mechanical work," said Dr. Peixuan Guo. "ATP binding could power a motor made of six strands of RNA, and we are now exploring the myriad possible applications of such a tiny mechanism."

Wednesday, March 05, 2003

Cyborg Mann in First Monday

Cyborg logs

Postmodernist mimicry? Or sophisticated commentary on attribution-free online communities (such as blogs - a cyborg blog is a glog) functioning as cyborgian collaborative communications systems?

Detailed description of some specific implementations of attribution-free computing

This figure

shows a system for producing attribution-free informatic content by way of a collective stream-of-deconsciousness capture. Users 1 and 2 interact with multiple input devices ID1 and ID2. Input devices may consist of computer mice, keyboards, pixels of one or more video cameras, wearable computer devices, or other sensors with which users can interact. An Attribution Obfuscator combines the inputs from the input devices, to give rise to a combined signal from multiple users. The combined signal is passed into an Event Splitter. The splitter duplicates the incoming event, so that it can drive two output devices. In this way, a closed-loop feedback path forms around the multiple users.