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New model could help predict historical air pollution exposure; Study also shows that air quality improves when unemployment rises

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TechAndComputer (Sep. 12, 2012) — In a study that analyzed relationships between air quality and unemployment levels, a Tufts University researcher has developed a new statistical model that retrospectively estimates air pollution exposure for previous time periods where such information is not available.

Mary Davis, an associate professor of urban and environmental policy and planning at Tufts University School of Arts and Sciences, analyzed traffic-related air pollution levels and unemployment rates in four separate regions of California for which extensive air monitoring data was available: San Francisco Bay, Sacramento Valley, San Joaquin Valley, and the south-central coast between 1980 and 2000.

Davis focused on...

Hard coating extends the life of new ultrahigh-density storage device

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TechAndComputer (Sep. 12, 2012) — Probe storage devices read and write data by making nanoscale marks on a surface through physical contact. The technology may one day extend the data density limits of conventional magnetic and optical storage, but current probes have limited lifespans due to mechanical wear. Share This: See Also: Matter & EnergyElectronicsTechnologyMicroarraysComputers & MathEncryptionHackingInformation TechnologyReference MRAMScanning...

Optomechanics: Swift light switching at the microscale

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TechAndComputer (Sep. 12, 2012) — Faster signal storage and optical processing in nanomachined devices edge closer to realization, thanks to new research. Share This: See Also: Matter & EnergyOpticsInorganic ChemistryPhysicsComputers & MathInformation TechnologyEncryptionHackingReference OpticsInfraredSpectroscopyDoppler effect

A system that has only two possible stable states, such as a light switch, is called bistable by scientists...

High-temperature superconductivity induced in a semiconductor with Scotch tape

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TechAndComputer (Sep. 11, 2012) — An international team led by University of Toronto physicists has developed a simple new technique using Scotch poster tape that has enabled them to induce high-temperature superconductivity in a semiconductor for the first time. The method paves the way for novel new devices that could be used in quantum computing and to improve energy efficiency. Share This: See Also: Matter & EnergyPhysicsQuantum PhysicsMaterials...

Predicting wave power could double marine-based energy

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TechAndComputer (Sep. 10, 2012) — In the search for alternative energy, scientists have focused on the sun and the wind. There is also tremendous potential in harnessing the power of the ocean's waves, but marine energy presents specific challenges that have made it a less promising resource. Share This: See Also: Matter & EnergyEnergy TechnologyPetroleumEarth & ClimateEnergy and the EnvironmentRenewable EnergyComputers & MathComputer...