Gaoya dianqi模块化多电平变换器（modular multilevel converter，MMC）作为规模化光伏直流系统常用的并网方案，其可靠运行是实现规模化光伏应用的重要前提。近年来许多研究通过优化热分布特性来提高变换器的可靠性，但目前尚缺乏以MMC为研究对象，总结分析其电热特性以及相应的优化方法的相关研究。因此文中分析了MMC的热分布特性及其影响因素，并总结了其电热优化调控方法研究的最新进展。首先，分析了MMC子模块内部和同桥臂内子模块间的热分布特性及导致其差异的原因。此后 ...
王丰, 夏镔冰, 勾雅婷, 史书怀
doaj
[Brain-controlled unmanned aerial vehicle system based on meta brain computer interface open-source software platform]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLi A +5 more
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[Positive cortical support reduction in treatment of trochanteric femur fractures: history in theory establishment and its inspiration for clinical innovations]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiChang S.
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[Construction of a prognosis forecasting model for breast cancer based on lipid metabolism-related genes and functional verification of <i>ALDH2</i>]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanLu Z, Lu Y, Zhou J, Zhu Y.
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[Identification and Underlying Mechanisms of Immune Cell- and Senescence-Related Biomarkers in Atrial Fibrillation]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanHuang W, Liu E, Fu H.
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[Early Alzheimer's disease recognition via multimodal hand movement quality assessment]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiYang G +5 more
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Gaoya dianqi基于无人机航拍的电力巡检成为目前绝缘子缺陷检测方法的主流，但当遇到图像特征不够明显或干扰特征较多等问题时，绝缘子缺陷识别困难，检测精度不高。由此，提出了一种基于改进YOLOv5s的绝缘子缺陷检测方法。首先，重新设计卷积模块，然后将CA注意力机制与其相融合，并且在主干网络加入注意力机制与颈部网络的特征图进行多尺度特征融合，抑制复杂环境下的干扰特征，专注缺陷特征提取；其次，对空间金字塔池化结构（SPPF）进行改进，扩大感受野，减少被模型过滤掉的有用信息；接着，将Transformer与C3模块中的残差结构 ...
彭晏飞, 袁晓龙, 赵涛, 陈炎康
doaj
[Endometrial cancer lesion region segmentation based on large kernel convolution and combined attention]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiPeng R, Zeng Q, He B, Liu J, Xiao Z.
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[A motor imagery decoding study integrating differential attention with a multi-scale adaptive temporal convolutional network]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiDong Z, Bao X, Yang Y, Wu J.
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[Research progress on the application of molecularly imprinted nanozymes in the field of biosensing]. [PDF]
Se PuZhang X, Liu S, Pan J.
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