# "printer" entries

## Four short links: 30 December 2011

### Hadoop 1.0, Approximation Wiki, Printer Firmware Attacks, and Cotton Circuits

1. Hadoop Hits 1.0 — open source distributed computation engine, heavily used in big data analysis, hits 1.0.
2. Sparse and Low-Rank Approximation Wiki — interesting technique: instead of sampling at 2x the rate you need to discriminate then compressing to trade noise for space, use these sampling algorithms to (intelligently) noisily sample at the lower bit rate to begin with. Promises interesting applications particularly in for sensors (e.g., the Rice single pixel camera). (via siah)
3. Rise of Printer Malware — firmware attacks embedded in printed documents. Another reminder that not only is it hard to write safe software, your mistakes can be epically bad. (via Cory Doctorow)
4. Electric Circuits and Transistors Made From CottonTo make it conductive, the researchers coated cotton threads in a variety of other materials. To make conductive “wires,” the team coated the threads with gold nanoparticles, and then a conductive polymer. To turn a cotton wire into a semiconductor, it was dipped in another polymer, and then a further glycol coating to make it waterproof. Neat materials hack that might lend a new twist to wearables.
Comment: 1

## The desktop 3D printer

Yesterday, Andrew Sheppard pointed me at a desktop 3D printer for under $5000. That brought back some memories… In the early 80s, I worked for Imagen, the company that made the first laser printer that sold for under$20,000, the first laser printer that sold for under $10,000, and the first laser printer that sold for under$7,000. We didn't…