这个无序系统的维数一般是分数。
提出了时变维数的概念,对原有分数布朗运动模型加以拓展,使其成为具有局部自相似性的随机过程。
The concept of varying-time dimension is presented and the original fractional Brownian motion model is extended to be a locally self-similarity stochastic process.
基于小角X射线散射理论,利用逐级切线法和材料分形理论中的散射强度法,分别计算PAN基炭纤维内微孔大小、体积分数及微孔表面分形维数。
Based on SAXS theory and fractal theory, we obtain the calculating method and calculating formulas of the pore size, pore volume percentage and the fractal of pore surface in PAN - based carbon fiber.
目前计算分数维广泛采用的方法是盒维数法。但对于灰度图像而言,盒维数计算的结果太粗略以致于很难将它作为进行图像分析的特征。
The popular method for fractal dimension estimation is box-counting method, but as to gray level images, the results are so coarse that they could hardly be used as the feature for image analysis.
相反,维冈在不可思议地跨过40分数线后早早失去了前进的动力。
In stark contrast, Wigan's momentum has completely stalled ever since they passed the magical 40-point mark.
相反,维冈在不可思议地跨过40分数线后早早失去了前进的动力。
In stark contrast, Wigan's momentum has completely stalled ever since they passed the magical 40-point mark.
应用推荐