大津阈值分割法，也称最大类间方差法，利用图像的灰度分布密度函数定义图像的交叉熵。 交叉熵可看作是两个概率系统（即图像背景及目标）的信息量之间的差异。求出的交叉熵越大，则分割效果越好。 -Otsu threshold segmentation method, also known as Otsu method, the use of gray-scale image distribution density function definition images of cross-ent

This paper presents the enhancement of voltage sags/swell harmonic distortion and low power factor using Distribution Static Compensator (D-STATCOM). The model is based on the Voltage Source Converter (VSC) principle. The D-STATCOM injects a curr

用MA化裙程序演示了点电荷系所激发电场的等势面，并且讨论了电荷对称分布情况下，点电荷系的等势面及电场分布的特点(The equivalent potential surface of the electric field excited by point charge system is demonstrated by using MA skirt program, and the equipotential surface and the electric field distribution