Randomness
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Infinite-mean durations found in five cryptocurrency ETFs Asymptotic theory for integrated autoregressive conditional duration models reveals infinite-mean trading intervals in cryptocurrency ETFs, requiring new inference methods.
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Bio-inspired Voronoi tubes improved energy absorption Bio-inspired Voronoi tubular structures replicate luffa sponge architecture for enhanced energy absorption. Parametric design optimization increases specific energy absorption by up to 78%.

