Unexpected attraction of polarotactic water-leaving insects to matt black car surfaces: mattness of paintwork cannot eliminate the polarized light pollution of black cars.

The horizontally polarizing surface parts of shiny black cars (the reflection-polarization characteristics of which are similar to those of water surfaces) attract water-leaving polarotactic insects.Thus, shiny black cars are typical sources of polarized light pollution endangering water-leaving insects.A new fashion fad is to make car-bodies matt

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CATIA modeling method of ship hull with hull line as data input

ObjectiveTo simplify the ship modeling process and improve modeling efficiency, this paper proposes a method for rapidly implementing hull model creation based on hull line drawing.MethodsUsing the CATIA platform, this method adopts the component application architecture (CAA) development tool for secondary development.First, by reading the geometr

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Detection of Pitting in Gears Using a Deep Sparse Autoencoder

In this paper; a new method for gear pitting fault detection is presented.The presented method is developed based on a deep sparse autoencoder.The method integrates dictionary learning in sparse coding into a stacked autoencoder network.Sparse coding with dictionary learning is viewed as an adaptive feature extraction method for machinery fault dia

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