Students racing over curving roads in a video-game simulation hope to help scientists at Rensselaer Polytechnic Institute's Lighting Research Center (LRC) answer a serious question: Do current lighting standards mislead us about the efficiency of roadway, parking lot, and security lighting? Lighting efficiency is widely calculated as lumens per watt of energy, explains Mark Rea, LRC director. The lumen, a measurement defined in the 1920s, is based on the response in bright light of the fovea, the part of the retina that contains cone photoreceptors. It's responsible for central, high-acuity vision. However, parts of the retina containing rod-shaped photoreceptors also are important in low-light conditions and for peripheral vision. As a result, lumens per watt delivers an accurate efficiency measure for tasks done in bright light, but is less accurate for such tasks as night driving, which requires good peripheral vision in low light. In research sponsored jointly by General Electric, OSRAM Sylvania, Philips, and the Department of Energy, the LRC is conducting experiments with the driving simulator to measure the reaction of the participants under varying lighting conditions. The information gained could help industry produce new lighting systems that are more efficient, Rea believes, since they would take into account the complex responses of the human eye. Phone Rea at (518) 276-8701 (E)
It won't be too much longer and hardware design, as we used to know it, will be remembered alongside the slide rule and the Karnaugh map. You will need to move beyond those familiar bits and bytes into the new world of software centric design.
People who want to take advantage of solar energy in their homes no longer need to install a bolt-on solar-panel system atop their houses -- they can integrate solar-energy-harvesting shingles directing into an existing or new roof instead.
Kaspersky Labs indicated at its February meeting that cyber attacks are far more sophisticated than previous thought. It turns out even air-gapping (disconnecting computers from the Internet to protect against cyber intrusion) isn’t a foolproof way to avoid getting hacked. And Kaspersky implied the NSA is the smartest attacker.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.