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  1. No Access

    Article

    Effect of Quenching, Lamellarizing, and Tempering on Reversed Austenite and Cryogenic Toughness of 9Ni Steels

    Herein, the effects of quenching, lamellarizing, and tempering (QLT) on reversed austenite and cryogenic toughness of 9Ni steels were investigated in terms of microstructure characterization, internal friction...

    Hongliang Zhang, Jia** Hou, Dazheng Zhang… in Journal of Materials Engineering and Perfo… (2024)

  2. No Access

    Chapter and Conference Paper

    Robust Fault Estimation for Discrete-Time Multi-agent Systems with Unknown Input Observer

    This paper focuses on fault estimation problem for linear discrete-time multi-agent system based on unknown input observer method. Firstly, we expand the state vector’s dimension, making it include sensor or a...

    Jiakai Xu, Meng Zhou in Advances in Guidance, Navigation and Control (2022)

  3. No Access

    Article

    RETRACTED ARTICLE: A non-commutative time-frequency tomography

    The characterization of non-stationary signal requires joint time and frequency information. However, time and frequency are a pair of non-commuting variables that cannot constitute a joint probability density...

    JianCai Liu, JiaKai Xu, **nBao Ning, Run Tian in Chinese Science Bulletin (2007)