Top Tech Cars 2013: Ram 1500

This pickup’s as powerful as it looks, but it’s frugal with fuel

1 min read
Ram 1500
Photo: Chrysler

The Ram 1500 is big for its weight.

Once unrepentant guzzlers, as comfortable as a bus-stop bench, full-size pickup trucks are cleaning up their act. And beneath its big-rig exterior, the new Ram is the cleanest of the bunch.

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IEEE SIGHT Founder Amarnath Raja Dies at 65

The humanitarian program leverages technology for sustainable development

4 min read
Photo of a man in a blue "IEEE SIGHT" jacket in front of a flowering tree.

Amarnath Raja, an IEEE senior member, founded the IEEE Special Interest Group on Humanitarian Technology in 2011.

Jaya Krishnan

Amarnath Raja

Founder of IEEE Special Interest Group on Humanitarian Technology

Senior member, 65; died 5 September

Raja founded the IEEE Special Interest Group on Humanitarian Technology (SIGHT) in 2011. The global network partners with underserved communities and local organizations to leverage technology for sustainable development.

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Hi-fi, Radio, and Retro: The DIY Projects Spectrum Readers Love

They also really like Lego and hacking pretty much everything

2 min read
An assortment of boxy devices, spread out as if on a display table.

Here are some of your favorite Hands On projects: An inexpensive but high-quality DIY audio amplifier (A) and its Web-enabled successor (B); an Arduino-powered replica of the groundbreaking Altair 8800 (C); a Raspberry Pi–powered color mechanical television (D); and (E), a home computer built with just five digital chips that uses an old hack to create an analog video signal.

James Provost

This month we’re celebrating the launch of our second PDF collection of Hands On articles, which IEEE members can download from IEEE Spectrum’s website and share with friends. So we thought we’d take a look at the relative popularity of Hands On articles published over the last five years and share the top 15 projects our website visitors found most interesting.

Just to give a little peek behind our analytics curtain, the measure of popularity Spectrum’s editors use is “total engaged minutes,” or TEM, which combines page views of articles with how long visitors spend reading them. We use TEM because we’re not terribly interested in grabbing folks with a clickbait headline, only for them to bounce out before they’ve finished reading the first paragraph.

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Solving Automotive Design Challenges With Simulation

Learn about low-frequency electromagnetic simulations and see a live demonstration of COMSOL Multiphysics software

1 min read

The development of new hybrid and battery electric vehicles introduces numerous design challenges. Many of these challenges are static or low-frequency electromagnetic by nature, as the devices involved in such designs are much smaller than the operating wavelength. Examples include sensors (such as MEMS sensors), transformers, and motors. Many of these challenges include multiple physics. For instance, sensors activated by acoustic energy as well as heat transfer in electric motors and power electronics combine low-frequency electromagnetic simulations with acoustic and heat transfer simulations, respectively.

Multiphysics simulation makes it possible to account for such phenomena in designs and can provide design engineers with the tools needed for developing products more effectively and optimizing device performance.

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