一个溢油检测算法，先检测暗区目标，再进行特征提取，然后分类识别-We present algorithms for automatic detection of oil spills in synthetic aperture radar (SAR) images. The algorithms consist of three main parts, namely: 1) detection of dark spots 2) feature extraction from the

自己编的闻邦椿书上的Riccati法求临界转速。转子模型为单跨双圆盘模型，没有加入去除奇点的算法，结果可能有奇点，没有提取振型。-Own Wen Bangchun Riccati law book uates the critical speed. Rotor model for the single-span double-disc model, did not join the removal singularities algorithm, the results may have si