简单层次网络上的自组织临界行为  

SOC Behavior of Simple Hierarchical Network

作　　者：杨秋英[1] 颜学文[1] 

机构地区：[1]常熟理工学院物理与电子工程学院

出　　处：《常熟理工学院学报》2012年第4期46-51,共6页Journal of Changshu Institute of Technology

摘　　要：采用改进的二维格子地震(OFC)模型研究了简单两层网络上的雪崩行为.考虑到层间的性质或功能有差异,在OFC模型中引进层内控制参量α和层间控制参量β,得到其雪崩大小在一定范围内满足幂律分布,超出一定的值,系统便不再处于自组织临界态,而处于超临界态.另外,膜电位平均值的时间序列的功率谱也近似满足1/5幂律行为.The avalanche behavior of simple two-level network is studied by using the improved OFC model in this paper. Considering the different nature or function between levels, two different control parameters, and are introduced to express control parameters of level internal and levels respectively. The conclusion is reached that the avalanche distribution obeys the power-law distribution within a certain range. The system will not be in the self-organized critical state, but in the supercritical state when the parameters exceed the certain value. Otherwise, the power spectrum of time series of the average membrane potential approximately obeys the power-law behavior.

关 键 词：改进的模型 层次网络 自组织临界行为 

分 类 号：N93[自然科学总论]