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  2. Curse of dimensionality - Wikipedia

    en.wikipedia.org/wiki/Curse_of_dimensionality

    In general, with a spacing distance of 10 −n the 10-dimensional hypercube appears to be a factor of 10 n(10−1) = [(10 n) 10 /(10 n)] "larger" than the 1-dimensional hypercube, which is the unit interval. In the above example n = 2: when using a sampling distance of 0.01 the 10-dimensional hypercube appears to be 10 18 "larger" than the unit ...

  3. Deep sea mining - Wikipedia

    en.wikipedia.org/wiki/Deep_sea_mining

    The United Nations Environment Programme (UNEP) emphasizes the need for a comprehensive assessment of the environmental impacts of deep-sea mining, which targets polymetallic nodules at depths of 3–6.5 km (1.9–4.0 mi), polymetallic sulphides at 1–4 km (0.62–2.5 mi), and cobalt-rich ferromanganese crusts between <400 m and 3.5 km ...

  4. Mine shell - Wikipedia

    en.wikipedia.org/wiki/Mine_shell

    A mine shell (from German: Minengeschoss, "mine shot") or high-explosive, high-capacity (HEHC) [a] in British military nomenclature, [1] [2] [3] is a military explosive shell type characterized by thin (usually steel) shell walls and a correspondingly high quantity of explosives, much higher than the traditional high-explosive shell type per caliber, meaning that mine shells trade ...