Engineering

Magazine articles on engineering and how things work.

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Reactive Reports September 2005 David Bradley	Urea Clean Up Researchers have shown that urea could be the key element in cleaning up diesel exhausts.
Science News September 24, 2005 Ivars Peterson	Tying Down a Random Walk If you've forgotten how to form a four-in-hand, take a lesson from retired mechanical engineer Seth Goldstein's necktie-maven "Why Knot" robot, now on display at the Franklin Institute in Philadelphia. Or, view an on-line clip.
Bio-IT World September 2005 Kevin Davies	Fantastic 454: DNA Sequencing Pyrotechnics In an exciting advance for DNA sequencing technology, a research team at 454 Life Sciences Corp. has essentially sequenced and assembled a bacterial genome sequence based on a mere 4-hour run on the company's proprietary instrument.
Technology Research News September 19, 2005	Two Schools of Cryptography Hard numbers vs. uncertainty: Computationally secure methods use cryptographic keys that are answers to difficult-to-solve mathematical problems. Probabilistically secure methods use cryptographic keys chosen at random from a fast source of random signals.
BusinessWeek September 26, 2005 Adam Aston	Engines: Less Fuel, Fewer Emissions, More Power England's Camcon Technology Ltd. has a technology called Intelligent Valve Actuation (IVA) that replaces the camshaft with an ingenious electromechanical device that the company claims can cut emissions and crank out more power.
Scientific American September 19, 2005 Steven Ashley	Silicon Sniffer Engineers have developed a button-size chemical sensor prototype that is designed, among other things, to detect trace amounts of explosives before they detonate.
National Defense October 2005 Robert H. Williams	Sensor Measures Multiple Cloud Layers An improved laser ceilometer -- which can measure up to four layers of cloud cover from zero to 30,000 feet -- has been unveiled by All Weather Inc. The airport weather sensor relies on advanced signal processing algorithms and eye-safe light detection and ranging optical radar.
National Defense October 2005 Robert H. Williams	Tire Protection System to be Targeted at Nation's Firefighters Firefighters are the intended recipients of a tire-protection system from Pierce Manufacturing Inc. that senses tire pressure and temperature. A wheel-position indicator and audible alarm in the cab warns drivers of looming problems.
Science News September 17, 2005 Janet Raloff	Using Light to Sense Plants' Health and Diversity A new experimental laser device promises speedy and more-detailed maps of crop-nutrition needs by taking readings from plants themselves as a tractor or other vehicle moves through a field.
CIO September 15, 2005 Christopher Lindquist	Traveling by Wire Engineers are building claytronic atoms (catoms) that, when linked to humans can provide an active 3-D model. For remote conferencing, attendees could be recorded using a combination of video and motion sensors, with the collected data sent over the Internet to a waiting pile of catoms.
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