Nerve fibers are attracted by sutureless end-to-side nerve coaptation into the recipient nerve. Opening a window in the epineurium enhances axon attraction and myeliuation. The authors analyze the features of nerve re...Nerve fibers are attracted by sutureless end-to-side nerve coaptation into the recipient nerve. Opening a window in the epineurium enhances axon attraction and myeliuation. The authors analyze the features of nerve repair by end-to-side coaptation. They highlight the known mechanisms of axon sprouting and different hypotheses of start up signals （presence or absence of an epineurial window, role of Schwann cells, signaling from the distal trunk）. The clinical literature is also presented and differences between experimental and clinical applications are pointed out. The authors propose their point of view and perspectives deriving from recent experimental and clinical experiences.展开更多
海洋一号C(HY-1C)卫星是中国首颗海洋水色业务卫星,其搭载的海岸带成像仪(Coastal Zone Imager, CZI)具有大幅宽、短重访周期的优势,可实现海洋和海岸带的大面积观测。作为光学传感器,CZI受云影响严重,准确识别云是CZI数据处理的关键,但...海洋一号C(HY-1C)卫星是中国首颗海洋水色业务卫星,其搭载的海岸带成像仪(Coastal Zone Imager, CZI)具有大幅宽、短重访周期的优势,可实现海洋和海岸带的大面积观测。作为光学传感器,CZI受云影响严重,准确识别云是CZI数据处理的关键,但是CZI缺少红外和短波红外等对云敏感的波段,云检测难度大。针对该问题,本文提出一种融合多尺度卷积和侧窗滤波的轻量化云检测方法,该方法通过多尺度卷积获取云的不同尺度特征,通过侧窗滤波突出边缘特征,减少椒盐噪声的影响,提升云边缘检测的精度。实验结果表明,本文所提出的方法可有效进行云检测,在云边缘提取方面表现较好,F1-score达92.77%,Kappa系数达0.89,与现有云检测方法相比优势明显,且模型训练速度快、参数量少,可为HY-1C CZI遥感影像处理提供有力支撑。展开更多
文摘Nerve fibers are attracted by sutureless end-to-side nerve coaptation into the recipient nerve. Opening a window in the epineurium enhances axon attraction and myeliuation. The authors analyze the features of nerve repair by end-to-side coaptation. They highlight the known mechanisms of axon sprouting and different hypotheses of start up signals （presence or absence of an epineurial window, role of Schwann cells, signaling from the distal trunk）. The clinical literature is also presented and differences between experimental and clinical applications are pointed out. The authors propose their point of view and perspectives deriving from recent experimental and clinical experiences.
文摘海洋一号C(HY-1C)卫星是中国首颗海洋水色业务卫星,其搭载的海岸带成像仪(Coastal Zone Imager, CZI)具有大幅宽、短重访周期的优势,可实现海洋和海岸带的大面积观测。作为光学传感器,CZI受云影响严重,准确识别云是CZI数据处理的关键,但是CZI缺少红外和短波红外等对云敏感的波段,云检测难度大。针对该问题,本文提出一种融合多尺度卷积和侧窗滤波的轻量化云检测方法,该方法通过多尺度卷积获取云的不同尺度特征,通过侧窗滤波突出边缘特征,减少椒盐噪声的影响,提升云边缘检测的精度。实验结果表明,本文所提出的方法可有效进行云检测,在云边缘提取方面表现较好,F1-score达92.77%,Kappa系数达0.89,与现有云检测方法相比优势明显,且模型训练速度快、参数量少,可为HY-1C CZI遥感影像处理提供有力支撑。
