Digital video watermark is widely used to protect copyright and content authentication. DWT-SVD based method, i.e., discrete wavelet transform (DWT) and singular value …
Automatic modulation recognition (AMR) technology enables receivers to automatically recognize the modulation type of the received signal for correct demodulation of the received …
In this paper, an adaptive prescribed performance tracking control(PPTC) problem of uncertain nonlinear systems with unknown hysteresis input is investigated. For the purpose of …
This paper introduces a distributed adaptive fault-tolerant control scheme for nonlinear multi- agent systems afflicted by actuator failures. The proposed scheme ensures that the …
In December 2022, the United States (US) experienced an extreme cold event. Its duration was 5 days, and it ranked third in intensity (-9.16 degrees C) during the period from 1979 …
In this article, the problem of adaptive finite-time tracking control for a class of nonlinear systems subject to backlash-like input hysteresis and multiple objective constraints …
通过将超大型浮式结构物(a very large floating structure,简称VLFS)模拟为黏弹性薄板，本工作对VLFS的非线性水弹性响应进行了解析研究。运用同伦分析方法(the homotopy analysis method,简称HAM),计算出速度势和板挠度的近似迭代解，并根据计算结果着重探究了几个重要的物理参数对黏弹性板形变的影响。结 …
新背景下给教学带来极大挑战，而互联网教育理念下的移动教学却给师生带来无限生机。当今时代，网络技术迅猛发展，传统的课件媒体、板书教学与基于移动智能终端 APP 的现代化教学深度融合，逐渐形成了移动教学模式。移动教学模式不仅以移动智能终端 APP 和网络电脑终端为线上学习平台，还结合多媒体、课件等进行线下课堂教学，体现了互动、交互式的课堂环境，助推了评价方式由结 …
Predefined-time control has experienced substantial advancements in recent years. Nevertheless, the current technology has not achieved widespread adoption in nonlinear multi-agent …
伴随全球变暖和有卫星观测记录以来北极秋季海冰密集度的下降，近几年，东亚地区极端降温事件频繁发生。基于北极涛动指数、北极海冰密集度及温度、位势高度和风场等大气环流数据，研究2021年1月和2024年1月我国极端寒潮的时空变化特征及其原因机制。2021年1月1日至9日，2024年1月17日至24日，我国东部地区（115°00′～120°00′E, …