While the potential for physical hazards in Antarctica is high, Precious says social dynamics can prove more problematic. When relationships break down, the fallout can be hard to rectify, and hard to control, he says.
Фото: Ilya Moskovets / URA.RU / Globallookpress.com
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The A/D bits exist entirely for the operating system's benefit. The Accessed bit tells the OS which pages have been recently used, enabling page replacement algorithms to choose pages to evict when memory runs low. The Dirty bit tells the OS which pages have been modified and must be written back to disk before eviction; clean pages can simply be discarded and re-read from disk later.