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Finite-time Bipartite Synchronization of Complex-valued Complex Networks with Time Delay
Li Lei,Degang Yang,Tao Liang,Wanli Zhang 제어·로봇·시스템학회 2023 International Journal of Control, Automation, and Vol.21 No.6
Based on the framework of signed graphs, we investigate finite-time bipartite synchronization (FTBS) of delayed complex-valued complex networks (DCVCN) in this paper. Several control strategies with quantizer are designed, which can save communication resources. 1-norm analytical techniques are used and developed to present strict proof of theoretical results. Some FTBS criteria are established by use of multiple Lyapunov functions, and the settling time is estimated by means of control parameters and initial values. Numerical simulation results are given to verify the validity of theoretical analysis.
High‑Efficiency Inhibition of Gravity Segregation in Al–Bi Immiscible Alloys by Adding Lanthanum
Peng Jia,Jinyang Zhang,Haoran Geng,Xinying Teng,Degang Zhao,Zhongxi Yang,Yi Wang,Song Hu,Jun Xiang,Xun Hu 대한금속·재료학회 2018 METALS AND MATERIALS International Vol.24 No.6
The inhibition of gravity segregation has been a long-standing challenge in fabrication and applications of homogeneousimmiscible alloys. Therefore, the effect of rare-earth La on the gravity segregation of Al–Bi immiscible alloys was investigatedto understand the homogenization mechanism. The results showed that the addition of La can completely suppress thegravity segregation. This is attributed to the nucleation of Bi-rich liquid phase on the in-situ produced LaBi2phase and thechange of the shape of LaBi2@Bi droplets. In addition, a novel strategy is developed to prepare the homogeneous immisciblealloys through the addition of rare-earth elements. This strategy not only is applicable to other immiscible alloys, but alsois conducive to finding more elements to suppress the gravity segregation. This study provided a useful reference for thefabrication of the homogeneous immiscible alloys.