Each server updates it's in-memory index on each of these events so at any given moment, every server has a live lookup table of where every user is currently connected.
The results indicate that the power index, the minimum gap width and the size ratio are the main factors affect the magnitude of the pressure, the force and the moment.
结果发现幂流体的幂指数、颗粒间最小间隙以及颗粒的大小都是流体压力和颗粒间切向阻力的重要因素。
3
Image moment invariants are extracted as the index to generate the image-dependent watermark, which is unknown to the attacker and different for different images.