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Developmental Medicine &Child Neurology, Volume 61, Issue 3, Page E1-E35, March 2019., 2019 目的 本国际临床指南由欧洲残疾儿童学会（the European Academy of Childhood Disability，EACD）牵头制定，旨在解决发育性协调障碍（developmental coordination disorder，DCD）的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题，通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础，以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类，最终转化为指南建议。并由国际 ...
Jing Hua +6 more
wiley +1 more source
Application of Magnetic Coupling Resonance Wireless Power Transfer in Power System [PDF]
, 2022 Wireless power transfer (WPT) can transmit electric wirelessly. It performs better under some paticular circumstances compared with the traditonal transmission mode.
HE Hao +4 more
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智能科学与技术学报, 2022 三帧间差分检测作为手势识别中的一种优秀算法，可在一定程度上解决二帧间差分法的“重影”问题。但三帧间差分检测在识别手势时会出现空洞，无法适应光照骤变等情况。针对此问题，提出了一种混合骨骼特征的三帧间差分手势识别方法。该方法首先对数据集进行二值化以统一大小，降低背景颜色干扰和计算量；然后使用混合骨骼特征的三帧间差分进行手势检测与追踪；最后通过神经网络进行手势识别分类。该方法可以有效地重点训练手部特征，显著降低了背景对手势识别的干扰，同时还提升了识别效率。经实验验证，该方法在复杂背景下的识别率最低为 93 ...
张永强 +3 more
doaj
Non-cooperative signal modulation recognition algorithm based on joint feature parameter extraction [PDF]
, 2020 Aiming at the problem that in the current electromagnetic environment,the modulation method is complicated,the frequency-consuming equipment increases,the spectrum is congested,and the electromagnetic environment interference increases,the algorithm of ...
Haifei SI +3 more
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Double-RIS assisted anti-jamming communication method based on joint active and passive beamforming optimization [PDF]
, 2022 For double-reconfigurable intelligent surface (RIS) assisted wireless communication system, an anti-jamming communication method based on joint active and passive beamforming optimization was proposed.In order to maximize the received signal-to ...
Bin LYU +5 more
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Unveiling the language of ideology in China’s environmental planning: Pilot ecolinguistic analysis of an Environmental Impact Assessment [PDF]
, 2023 While predominantly seen as a technical process, environmental planning is in fact largely shaped by cultural and ideological factors. Ecolinguistics offers a coherent approach to analyse these elements, by unearthing their linguistic traces and exposing
Brombal, Daniele +2 more
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Gaoya dianqi, 2023 换流站内复杂电磁环境会对电力设备在线监测装置测量结果产生不利影响，为了提高装置测量结果的稳定性和可靠性，有必要对换流站设备附近区域的电磁场进行测量并分析其分布规律。文中利用电磁场分析仪对4所±500 kV换流站变压器、高抗、避雷器、电压互感器等附近的工频电场、磁场进行了测量。测量结果表明：所有被测换流站75%以上测点的电场强度分布在0～15 k V/m，最大值出现在避雷器附近，为32.6 kV/m；约90%测点的磁感应强度分布在0～80μT，最大值出现在换流变附近，为0.26 mT。基于实测结果 ...
贺家慧 +4 more
doaj
全球能源互联网, 2020 柔性直流输电换流阀所用的核心器件绝缘栅双极型晶体管（IGBT）的开关速度很快，IGBT开关过程中会产生强烈的电磁骚扰，加上雷击等瞬态骚扰，导致阀厅形成非常规的强电磁骚扰环境。子模块控制器作为子模块的控制和保护单元，属于低压信号设备，位于高压端子模块本体上，负责接收阀基控制器的开关指令和子模块本体的控制保护，因此电磁兼容（EMC）性能面临着严峻考验。为提升换流阀子模块控制器的EMC能力，对换流阀子模块周围电磁环境进行了仿真分析，并根据分析结果和相关标准，设定了控制器相关EMC试验参数 ...
闻福岳 +5 more
doaj +1 more source
Electromagnetic environment prediction and safety risk analysis of civil communication leakage coaxial cables in subway tunnels [PDF]
This study aimed to address the limitations of traditional electromagnetic numerical calculation methods in large-scale radio frequency (RF) space fields, accurately predict the electric field intensity of wireless communication signals in subway tunnels,
ZHAO Jiqing, ZHOU Wenying
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Overview of research progress on blind separation methods for single channel communication signal [PDF]
, 2023 Significant progress has been made in the research of single channel blind signal separation (SCBSS) methods, as the theoretical and practical applications of SCBSS technology have been continuously improved.A new classification framework for blind ...
Wen DENG, Xiang WANG, Zhitao HUANG
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