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Semcad X Jungfrau Marks the Spot (the Hot Spot)

Now you can predict not only how much radio energy will be absorbed by human tissue but how much hotter the tissue will get

3 min read

Semcad X Jungfrau is an updated and very attractive program for simulating electromagnetic fields around the sources of radio-frequency (RF) energy. Engineers use such programs to design antennas, study electro­magnetic interference problems, and help bioscientists investigate the possible health risks of exposure to RF fields.

The program uses the finite-difference time-domain (FDTD) method. The user defines the geometry of the problem and puts together the sources of the field, together with objects that might influence it, such as metal conductors. The program then models what happens after the field is turned on by working out just a few cycles of the field at a time over small time increments. At each step it solves the field equations over a grid that covers the region of interest. The FDTD method is now a standard approach for simulating electromagnetic fields at radio frequencies and is employed in several other commercial programs for electro­magnetic field simulation.

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Are You Ready for Workplace Brain Scanning?

Extracting and using brain data will make workers happier and more productive, backers say

11 min read
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A photo collage showing a man wearing a eeg headset while looking at a computer screen.
Nadia Radic
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Get ready: Neurotechnology is coming to the workplace. Neural sensors are now reliable and affordable enough to support commercial pilot projects that extract productivity-enhancing data from workers’ brains. These projects aren’t confined to specialized workplaces; they’re also happening in offices, factories, farms, and airports. The companies and people behind these neurotech devices are certain that they will improve our lives. But there are serious questions about whether work should be organized around certain functions of the brain, rather than the person as a whole.

To be clear, the kind of neurotech that’s currently available is nowhere close to reading minds. Sensors detect electrical activity across different areas of the brain, and the patterns in that activity can be broadly correlated with different feelings or physiological responses, such as stress, focus, or a reaction to external stimuli. These data can be exploited to make workers more efficient—and, proponents of the technology say, to make them happier. Two of the most interesting innovators in this field are the Israel-based startup InnerEye, which aims to give workers superhuman abilities, and Emotiv, a Silicon Valley neurotech company that’s bringing a brain-tracking wearable to office workers, including those working remotely.

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