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Reduce GPS data error on Android with Kalman filter and accelerometer
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Reduce GPS data error on Android with Kalman filter and accelerometer

The Russian version available here. Prehistory One day I got a cool task to improve the accuracy of positioning and distance calculating based on GPS data on Android devices. After some research, I found that different GPS-receivers produce different errors. The accuracy of the GPS point can be influenced by buildings, big trees, various weather…

Vitamin D may reduce the risk of cancer, new study finds
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Vitamin D may reduce the risk of cancer, new study finds

Based on animal studies, vitamin D really should prevent cancer. But evidence in humans is lacking, and the data we do have excludes a large swath of the global population. A new study takes a significant step toward fixing that problem—and provides encouraging findings about the role this easily accessible vitamin could play in reducing…

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CSX sticks with plan to cut jobs, reduce trains

(Reuters) - U.S. railroad operator CSX Corp said on Thursday it would stick with a plan started by former Chief Executive Hunter Harrison, who died in December, to boost profit through cutting jobs and rail cars, and would also slash capital spending. FILE PHOTO: A CSX gondola car full of coal moves through the switchyard…