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    Chapter and Conference Paper

    Second-Order Differentiator Based on Long-Period Waveguide Grating

    In this paper, a structure of second-order differentiator based on long-period waveguide grating (LPWG) is proposed. The second-order differentiator consists of two segment uniform gratings, one segment wavegu...

    Ailing Zhang, Hongyun Song, Bo Geng in Proceedings of the 8th International Multi… (2021)

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    Chapter and Conference Paper

    Improved Digital Password Authentication Method for Android System

    Proposes a simple digital password authentication method for mobile phones. Improves the authentication program by introducing random numbers and increasing the number of constant numbers. The input number of ...

    Bo Geng, Lina Ge, Qiuyue Wang… in Intelligent Computing Theories and Application (2018)